#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <math.h>
#include "Correct.h"
#include "Process_Read.h"
#include "ecovlp.h"
#include "kthread.h"
#include "htab.h"
#define HA_KMER_GOOD_RATIO 0.333
#define E_KHIT 31
#define CNS_DEL_E (0x7fffffffu)
#define del_cns_arc(z, arc_i) ((z).arc.a[(arc_i)].v == CNS_DEL_E)
#define CNS_DEL_V (0x1fffffffu)
#define del_cns_nn(z, nn_i) ((z).a[(nn_i)].sc == CNS_DEL_V)
#define REFRESH_N 128 
#define COV_W 3072
#define COV_W_AC 512
#define RES_K 19
#define RES_W 19
#define HC0_W 6

#define DBG_TIME 0
typedef struct {
	uint64_t fbs, faln;
	double chn_tm, aln_tm, phs_tm, cns_tm;
} dbg_cnt_ss;
dbg_cnt_ss *dbg_a = NULL;

typedef struct {
	dbg_cnt_ss *ssa, *ssb;
    uint64_t nrid;
    asg64_v srt_aa; ///uint64_t srt_aa_cut;
    asg64_v srt_ba; ///uint64_t srt_ba_cut;
    asgchr_v *spt_mul; uint64_t mul_n;
    uint64_t *fa, fn; asg32_v fthr;
} dbg_cmp_ss;
dbg_cmp_ss *dbgss = NULL;


KDQ_INIT(uint32_t)

typedef struct {
	uint32_t v:31, f:1;
	uint32_t sc;
} cns_arc;
typedef struct {size_t n, m, nou; cns_arc *a; } cns_arc_v;

typedef struct {
	// uint16_t c:2, t:2, f:1, sc:3;
	uint32_t c:2, f:1, sc:29;
	cns_arc_v arc;
}cns_t;

typedef struct {
	size_t n, m; 
	cns_t *a;
	uint32_t si, ei, off, bn, bb0, bb1, cns_g_wl;
	kdq_t(uint32_t) *q;
}cns_gfa;

typedef struct {
	// chaining and overlapping related buffers
	UC_Read self_read, ovlp_read;
	Candidates_list clist;
	overlap_region_alloc olist;
	ha_abuf_t *ab;
	// int64_t num_read_base, num_correct_base, num_recorrect_base;
	uint64_t cnt[6], rr;
	haplotype_evdience_alloc hap;
	bit_extz_t exz;
	kv_ul_ov_t pidx;
	asg64_v v64;
	asg32_v v32;
	asg16_v v16;
	asg8_v v8q, v8t;

    kvec_t_u8_warp k_flag;
	st_mt_t sp;
	cns_gfa cns;	
} ec_ovec_buf_t0;

typedef struct {
	ec_ovec_buf_t0 *a;
	uint32_t n, rev;
    uint8_t *cr;
} ec_ovec_buf_t;

typedef struct {
	ec_ovec_buf_t *p;
    asg64_v idx;
    ma_ug_t *ug;
} ec_polish_buf_t;

typedef struct {
	uint32_t n_thread, n_a, chunk_size, cn;
    FILE *fp;
} cal_ec_r_dbg_t;

typedef struct {
	ma_hit_t *a;
    size_t n, m;
    asg16_v ec;
} r_dbg_step_res_t;

typedef struct { // data structure for each step in kt_pipeline()
    ec_ovec_buf_t *buf;
    r_dbg_step_res_t *res;
    uint32_t si, ei;
} cal_ec_r_dbg_step_t;

ec_ovec_buf_t* gen_ec_ovec_buf_t(uint32_t n);
void destroy_ec_ovec_buf_t(ec_ovec_buf_t *p);


#define generic_key(x) (x)
KRADIX_SORT_INIT(ec16, uint16_t, generic_key, 2)
KRADIX_SORT_INIT(ec32, uint32_t, generic_key, 4)
KRADIX_SORT_INIT(ec64, uint64_t, generic_key, 8)

#define kdq_clear(q) ((q)->count = (q)->front = 0)

typedef struct {size_t n, m; asg16_v *a; uint8_t *f; uint16_t *er; uint64_t bid;} cc_v;
cc_v scc = {0, 0, NULL, NULL, NULL, 0};
cc_v scb = {0, 0, NULL, NULL, NULL, 0};
cc_v sca = {0, 0, NULL, NULL, NULL, 0};

typedef struct {uint64_t p, pn, pm, tov, tov_size, tqn; asg64_v *idx; ma_hit_t_alloc *pf;} tsrt_v_buf;
typedef struct {uint64_t p, pn, pm, rid, tot, chunk_size, tqn, n_thr; uint64_t n_ov, n_bl; ma_hit_t_alloc *pf;} tsrt_v_m;



typedef struct {size_t n, m; char *a; UC_Read z; asg8_v q;} sl_v;


void h_ec_lchain(ha_abuf_t *ab, uint32_t rid, char* rs, uint64_t rl, uint64_t mz_w, uint64_t mz_k, All_reads *rref, overlap_region_alloc *overlap_list, Candidates_list *cl, double bw_thres, 
								 int max_n_chain, int apend_be, kvec_t_u8_warp* k_flag, kvec_t_u64_warp* dbg_ct, st_mt_t *sp, uint32_t *high_occ, uint32_t *low_occ, uint32_t is_accurate, uint32_t gen_off, int64_t mcopy_num, double mcopy_rate, uint32_t chain_cutoff, uint32_t mcopy_khit_cut, uint64_t ocv_w, uint8_t is_raw_chain);
void h_ec_lchain_hybrid(ha_abuf_t *ab, uint32_t rid, char* rs, uint64_t rl, uint64_t mz_w, uint64_t mz_k, All_reads *rref, overlap_region_alloc *overlap_list, Candidates_list *cl, double bw_thres_h, double bw_thres_l,  
                                int max_n_chain, int apend_be, kvec_t_u8_warp* k_flag, kvec_t_u64_warp* dbg_ct, st_mt_t *sp, uint32_t *high_occ, uint32_t *low_occ, uint32_t is_accurate, uint32_t gen_off, int64_t mcopy_num, double mcopy_rate, uint32_t chain_cutoff, uint32_t mcopy_khit_cut, uint64_t ocv_w, uint64_t ti_cut, uint8_t flt_chh, uint8_t is_raw_chain);

void h_ec_lchain_amz(ha_abuf_t *ab, uint32_t rid, char* rs, uint64_t rl, uint64_t mz_w, uint64_t mz_k, All_reads *rref, overlap_region_alloc *overlap_list, Candidates_list *cl, double bw_thres, 
								 int max_n_chain, int apend_be, kvec_t_u8_warp* k_flag, kvec_t_u64_warp* dbg_ct, st_mt_t *sp, uint32_t *high_occ, uint32_t *low_occ, uint32_t is_accurate, uint32_t gen_off, int64_t enable_mcopy, double mcopy_rate, uint32_t chain_cutoff, uint32_t mcopy_khit_cut, uint64_t ocv_w);
void h_ec_lchain_re_gen(ha_abuf_t *ab, uint32_t rid, char* rs, uint64_t rl, uint64_t mz_w, uint64_t mz_k, ha_pt_t *ha_idx, All_reads *rref, overlap_region_alloc *overlap_list, Candidates_list *cl, double bw_thres, 
								 int apend_be, kvec_t_u8_warp* k_flag, kvec_t_u64_warp* dbg_ct, st_mt_t *sp, uint32_t *high_occ, uint32_t *low_occ, uint32_t gen_off, int64_t enable_mcopy, double mcopy_rate, uint32_t mcopy_khit_cut, 
								 int64_t max_skip, int64_t max_iter, int64_t max_dis, int64_t quick_check, double chn_pen_gap, double chn_pen_skip, UC_Read *tu, asg64_v *oidx, asg16_v *scc);
void h_ec_lchain_re_gen3(ha_abuf_t *ab, uint32_t rid, char* rs, uint64_t rl, uint64_t mz_w, uint64_t mz_k, ha_pt_t *ha_idx, All_reads *rref, overlap_region_alloc *overlap_list, Candidates_list *cl, double bw_thres, 
								 int apend_be, kvec_t_u8_warp* k_flag, kvec_t_u64_warp* dbg_ct, st_mt_t *sp, uint32_t *high_occ, uint32_t *low_occ, uint32_t gen_off, int64_t enable_mcopy, double mcopy_rate, uint32_t mcopy_khit_cut, 
								 int64_t max_skip, int64_t max_iter, int64_t max_dis, int64_t quick_check, double chn_pen_gap, double chn_pen_skip, UC_Read *tu, asg64_v *oidx, asg16_v *scc);
uint64_t get_mz1(const char *str, int len, int w, int k, uint32_t rid, int is_hpc, ha_abuf_t *ab, const void *hf, ha_pt_t *ha_idx, int sample_dist, kvec_t_u8_warp* k_flag, kvec_t_u64_warp* dbg_ct, ha_pt_t *pt, int min_freq, int32_t dp_min_len, float dp_e, st_mt_t *mt, int32_t ws, int32_t is_unique, void *km, uint64_t beg_i);
void get_pi_ec_chain(ha_abuf_t *ab, uint64_t rid, uint64_t rl, uint32_t tid, char* ts, uint64_t tl, uint64_t mz_w, uint64_t mz_k, overlap_region_alloc *overlap_list, Candidates_list *cl, double bw_thres, 
								int apend_be, kvec_t_u8_warp* k_flag, kvec_t_u64_warp* dbg_ct, st_mt_t *sp, uint32_t *high_occ, uint32_t *low_occ, /**uint32_t is_accurate,**/ uint32_t gen_off, int64_t enable_mcopy, double mcopy_rate, uint32_t mcopy_khit_cut, 
								int64_t max_skip, int64_t max_iter, int64_t max_dis, int64_t quick_check, double chn_pen_gap, double chn_pen_skip);
void set_lchain_dp_op(uint32_t is_accurate, uint32_t mz_k, int64_t *max_skip, int64_t *max_iter, int64_t *max_dis, double *chn_pen_gap, double *chn_pen_skip, int64_t *quick_check);
void h_ec_lchain_re_gen_srt(ha_abuf_t *ab, ha_pt_t *ha_idx, overlap_region_alloc *olst, Candidates_list *cl);
uint64_t h_ec_lchain_re_gen_qry(ha_abuf_t *ab, uint64_t *k, uint64_t *l, uint64_t *i, uint64_t *idx_a, uint64_t idx_n, uint64_t *tid, uint64_t *trev);
uint64_t h_ec_lchain_re_chn(ha_abuf_t *ab, uint64_t si, uint64_t ei, uint32_t rid, char* rs, uint64_t rl, uint64_t tid, char* ts, uint64_t tl, uint64_t trev, uint64_t mz_w, uint64_t mz_k, overlap_region_alloc *olst, Candidates_list *cl, double bw_thres, 
								 int apend_be, uint64_t max_cnt, uint64_t min_cnt, uint32_t gen_off, int64_t enable_mcopy, double mcopy_rate, uint32_t mcopy_khit_cut, int64_t max_skip, int64_t max_iter, int64_t max_dis, int64_t quick_check, double chn_pen_gap, double chn_pen_skip, tiny_queue_t *tq, asg16_v *scc, int64_t *n, int64_t *zn);
overlap_region* h_ec_lchain_fast(ha_abuf_t *ab, uint32_t rid, UC_Read *qu, UC_Read *tu, uint64_t mz_w, uint64_t mz_k, All_reads *rref, overlap_region_alloc *ol, Candidates_list *cl, bit_extz_t *exz, asg16_v *buf, asg64_v *srt_i, double bw_thres, 
								 int apend_be, kvec_t_u8_warp* k_flag, kvec_t_u64_warp* dbg_ct, st_mt_t *sp, uint32_t *high_occ, uint32_t *low_occ, uint32_t is_accurate, uint32_t gen_off, int64_t enable_mcopy, double mcopy_rate, uint32_t mcopy_khit_cut, ma_hit_t_alloc *in0, ma_hit_t_alloc *in1, double sh);
void h_ec_lchain_fast_new(ha_abuf_t *ab, uint32_t rid, UC_Read *qu, UC_Read *tu, All_reads *rref, overlap_region_alloc *ol, Candidates_list *cl, bit_extz_t *exz, asg16_v *buf, asg64_v *srt_i, ma_hit_t_alloc *in0, ma_hit_t_alloc *in1, double sh);
void gen_chain_clus(ha_abuf_t *ab, overlap_region_alloc *ol, Candidates_list *cl, asg32_v *ik);
void srt_olst(overlap_region_alloc* ol);

ec_ovec_buf_t* gen_ec_ovec_buf_t(uint32_t n)
{
    uint32_t k; ec_ovec_buf_t0 *z = NULL;
    ec_ovec_buf_t *p = NULL; CALLOC(p, 1);
    p->n = n; CALLOC(p->a, p->n);
    for (k = 0; k < p->n; k++) {
        z = &(p->a[k]);
        init_UC_Read(&z->self_read);
	    init_UC_Read(&z->ovlp_read);
	    init_Candidates_list(&z->clist);
	    init_overlap_region_alloc(&z->olist);

        // init_fake_cigar(&(z->tmp.f_cigar));
        // memset(&(z->tmp.w_list), 0, sizeof(z->tmp.w_list));
        // CALLOC(z->tmp.w_list.a, 1); z->tmp.w_list.n = z->tmp.w_list.m = 1;

        // kv_init(z->b_buf.a);
        // kv_init(z->r_buf.a);
        kv_init(z->k_flag.a);
        kv_init(z->sp);
        kv_init(z->pidx);
	    kv_init(z->v64);
        kv_init(z->v32);
        kv_init(z->v16);
        kv_init(z->v8q);
        kv_init(z->v8t);
        init_bit_extz_t(&(z->exz), 31);

        z->ab = ha_abuf_init();
        
        InitHaplotypeEvdience(&z->hap);
        z->cns.q = kdq_init(uint32_t);
    }
    
    return p;
}

void destroy_cns_gfa(cns_gfa *p)
{
    size_t k;
    for (k = 0; k < p->m; k++) {
        kv_destroy(p->a[k].arc);
    }
    free(p->a); kdq_destroy(uint32_t, p->q);
}

void destroy_ec_ovec_buf_t(ec_ovec_buf_t *p)
{
    uint32_t k; ec_ovec_buf_t0 *z = NULL;
    for (k = 0; k < p->n; k++) {
        z = &(p->a[k]); z->rr = 0;
        destory_UC_Read(&z->self_read);
        destory_UC_Read(&z->ovlp_read);
        destory_Candidates_list(&z->clist);
	    destory_overlap_region_alloc(&z->olist);

        // destory_fake_cigar(&(z->tmp.f_cigar));
        // free(z->tmp.w_list.a); free(z->tmp.w_list.c.a);

        // kv_destroy(z->r_buf.a);
        kv_destroy(z->k_flag.a);
        kv_destroy(z->sp);
        kv_destroy(z->pidx);
	    kv_destroy(z->v64);
        kv_destroy(z->v32);
        kv_destroy(z->v16);
        kv_destroy(z->v8q);
        kv_destroy(z->v8t);
        destroy_bit_extz_t(&(z->exz));

        ha_abuf_destroy(z->ab);
        
        destoryHaplotypeEvdience(&z->hap);
        destroy_cns_gfa(&(z->cns));

    }
    free(p->a); free(p->cr); free(p);

    // fprintf(stderr, "[M::%s-chains] #->%lld\n", __func__, asm_opt.num_bases);
    // fprintf(stderr, "[M::%s-passed-chains-0] #->%lld\n", __func__, asm_opt.num_corrected_bases);
    // fprintf(stderr, "[M::%s-cis-chains-1] #->%lld\n", __func__, asm_opt.num_recorrected_bases);
}

inline void refresh_ec_ovec_buf_t0(ec_ovec_buf_t0 *z, uint64_t n)
{
    z->rr++;
    if((z->rr%n) == 0) {
        free(z->self_read.seq); memset(&(z->self_read), 0, sizeof(z->self_read));
        free(z->ovlp_read.seq); memset(&(z->ovlp_read), 0, sizeof(z->ovlp_read));

        destory_Candidates_list(&z->clist); memset(&(z->clist), 0, sizeof(z->clist));
        destory_overlap_region_alloc(&z->olist); memset(&(z->olist), 0, sizeof(z->olist)); init_overlap_region_alloc(&z->olist);

        kv_destroy(z->k_flag.a); kv_init(z->k_flag.a);
        kv_destroy(z->sp); kv_init(z->sp);
        kv_destroy(z->pidx); kv_init(z->pidx);
        kv_destroy(z->v64); kv_init(z->v64);
        kv_destroy(z->v32); kv_init(z->v32);
        kv_destroy(z->v16); kv_init(z->v16);
        kv_destroy(z->v8q); kv_init(z->v8q);
        kv_destroy(z->v8t); kv_init(z->v8t);

        destroy_bit_extz_t(&(z->exz)); init_bit_extz_t(&(z->exz), 31);

        ha_abuf_destroy(z->ab); z->ab = ha_abuf_init();

        destoryHaplotypeEvdience(&z->hap); memset(&(z->hap), 0, sizeof(z->hap)); InitHaplotypeEvdience(&z->hap);

        destroy_cns_gfa(&(z->cns)); memset(&(z->cns), 0, sizeof(z->cns)); z->cns.q = kdq_init(uint32_t);

        // z->rr = 1;
    }
}


void prt_chain(overlap_region_alloc *o)
{
    uint64_t k;
    for (k = 0; k < o->length; k++) {
        fprintf(stderr, "[M::%s]\t#%u\tlen::%lu\t%u\t%u\t%c\t#%u\tlen::%lu\t%u\t%u\tsc::%d\taln::%u\terr::%u\n", __func__, o->list[k].x_id, Get_READ_LENGTH(R_INF, o->list[k].x_id), o->list[k].x_pos_s, o->list[k].x_pos_e+1, "+-"[o->list[k].y_pos_strand], 
                                                                                        o->list[k].y_id, Get_READ_LENGTH(R_INF, o->list[k].y_id), o->list[k].y_pos_s, o->list[k].y_pos_e+1, o->list[k].shared_seed, o->list[k].align_length, o->list[k].non_homopolymer_errors);
    }    
}

overlap_region *fetch_aux_ovlp(overlap_region_alloc* o, overlap_region **aux) /// exactly same to gen_aux_ovlp
{
    uint64_t nlen = o->length + ((aux)?(2):(1));
	if (nlen >= o->size) {
		uint64_t sl = o->size;
        o->size = nlen;
        kroundup64(o->size);
        REALLOC(o->list, o->size);
        /// need to set new space to be 0
        memset(o->list + sl, 0, sizeof(overlap_region)*(o->size - sl));
	}
    ///debug for memory
    // if(ol->length + 1 >= ol->size) {
    //     fprintf(stderr, "[M::%s] length::%lu, size::%lu\n", __func__, ol->length, ol->size);
    // }
    // if(aux) (*aux) = &(o->list[o->length+2]);
	// return &(o->list[o->length+1]);
    if(aux) (*aux) = &(o->list[o->length+1]);
	return &(o->list[o->length]);
}

typedef struct {
	ul_ov_t *c_idx;
    asg64_v *idx;
    int64_t i, i0, srt_n, rr, ru;
    uint64_t mms, mme;
} cc_idx_t;

#define extract_sub_cigar_mm_set(fza) do {								\
    if(op == 0) {\
        for (t = os + 1; t < oe; t++) {\
            (fza)[(t-s)<<1]++; (fza)[(t-s)<<1] += ((uint64_t)(0x100000000));\
            (fza)[((t-s)<<1)+1]++; (fza)[((t-s)<<1)+1] += ((uint64_t)(0x100000000));\
        }\
        \
        t = os;\
        if(t < oe) {\
            (fza)[(t-s)<<1]++; (fza)[(t-s)<<1] += ((uint64_t)(0x100000000));\
            if(os > ws) {\
                (fza)[((t-s)<<1)+1]++; (fza)[((t-s)<<1)+1] += ((uint64_t)(0x100000000));\
            }\
        }\
    } else if(op!=2) {\
        for (t = os + 1; t < oe; t++) {\
            (fza)[(t-s)<<1]++; \
            (fza)[((t-s)<<1)+1]++;\
        }\
        \
        t = os;\
        if(t < oe) {\
            (fza)[(t-s)<<1]++;\
            if(os > ws) {\
                (fza)[((t-s)<<1)+1]++;\
            }\
        }\
    } else {\
        (fza)[((ws-s)<<1)+1]++;\
    }\
} while (0)

///[s, e)
int64_t extract_sub_cigar_mm(overlap_region *z, int64_t s, int64_t e, ul_ov_t *p, uint64_t *ct, uint64_t *hf_ct)
{
    int64_t wk = ovlp_cur_wid(*p), xk = ovlp_cur_xoff(*p), yk = ovlp_cur_yoff(*p), ck = ovlp_cur_coff(*p), os, oe, t;
    bit_extz_t ez; int64_t bd = ovlp_bd(*p), s0, e0; 
    s0 = ((int64_t)(z->w_list.a[wk].x_start)) + bd; 
    e0 = ((int64_t)(z->w_list.a[wk].x_end)) + 1 - bd;
    if(s < s0) {s = s0;} if(e > e0) {e = e0;}///exclude boundary
    if(s >= e) return -1;
    os = MAX(s, s0); oe = MIN(e, e0);
    if(oe <= os) return -1;

    set_bit_extz_t(ez, (*z), wk);
    if(!ez.cigar.n) return -1;
    int64_t cn = ez.cigar.n, op; int64_t ws, we, ovlp; 
    if((ck < 0) || (ck > cn)) {//(*ck) == cn is allowed
        ck = 0; xk = ez.ts; yk = ez.ps;
    }
    
    while (ck > 0 && xk >= s) {///x -> t; y -> p; first insertion and then match/mismatch
        --ck;
        op = ez.cigar.a[ck]>>14;
        if(op!=2) xk -= (ez.cigar.a[ck]&(0x3fff));
        if(op!=3) yk -= (ez.cigar.a[ck]&(0x3fff)); 
    }

     //some cigar will span s or e
    while (ck < cn && xk < e) {//[s, e)
        ws = xk; 
        op = ez.cigar.a[ck]>>14;
        ///op == 3: -> x; op == 2: -> y;
        if(op!=2) xk += (ez.cigar.a[ck]&(0x3fff));
        if(op!=3) yk += (ez.cigar.a[ck]&(0x3fff)); 
        ck++; we = xk;

        os = MAX(s, ws); oe = MIN(e, we);
        ovlp = ((oe>os)? (oe-os):0);
        if(op != 2) {
            if(!ovlp) continue;
        } else {///ws == we
            if(ws < s || ws >= e) continue;
        }

        extract_sub_cigar_mm_set(ct); 
        if(hf_ct) {
            extract_sub_cigar_mm_set(hf_ct); 
        }
        // if(op == 0) {
        //     for (t = os + 1; t < oe; t++) {
        //         ct[(t-s)<<1]++; ct[(t-s)<<1] += ((uint64_t)(0x100000000));
        //         ct[((t-s)<<1)+1]++; ct[((t-s)<<1)+1] += ((uint64_t)(0x100000000));
        //     }

        //     t = os;
        //     if(t < oe) {
        //         ct[(t-s)<<1]++; ct[(t-s)<<1] += ((uint64_t)(0x100000000));
        //         if(os > ws) {
        //             ct[((t-s)<<1)+1]++; ct[((t-s)<<1)+1] += ((uint64_t)(0x100000000));
        //         }
        //     }
        // } else if(op!=2) {
        //     for (t = os + 1; t < oe; t++) {
        //         ct[(t-s)<<1]++; 
        //         ct[((t-s)<<1)+1]++;
        //     }

        //     t = os;
        //     if(t < oe) {
        //         ct[(t-s)<<1]++; 
        //         if(os > ws) {
        //             ct[((t-s)<<1)+1]++;
        //         }
        //     }
        // } else {
        //     ct[((ws-s)<<1)+1]++; ///ct[((ws-s)<<1)+1] += ((uint64_t)(0x100000000));
        // }
    }

    ovlp_cur_xoff(*p) = xk; ovlp_cur_yoff(*p) = yk; ovlp_cur_coff(*p) = ck; ovlp_cur_ylen(*p) = 0;
    
    return 1;
}

#define simp_vote_len 6

///[s, e)
uint32_t extract_sub_cigar_ii(overlap_region *z, int64_t ql, All_reads *rref, int64_t s, int64_t e, int64_t iws, int64_t iwe, UC_Read* tu, ul_ov_t *p)
{
    int64_t wk = ovlp_cur_wid(*p), xk = ovlp_cur_xoff(*p), yk = ovlp_cur_yoff(*p), ck = ovlp_cur_coff(*p), os, oe, ol;
    bit_extz_t ez; int64_t bd = ovlp_bd(*p), s0, e0, ii[2], it[2]; uint32_t res = (uint32_t)-1;
    s0 = ((int64_t)(z->w_list.a[wk].x_start)) + bd; 
    e0 = ((int64_t)(z->w_list.a[wk].x_end)) + 1 - bd;
    if(s < s0) {s = s0;} if(e > e0) {e = e0;}///exclude boundary
    if(s > e) return -1;///it is possible s == e
    os = MAX(s, s0); oe = MIN(e, e0);
    if(oe < os) return -1;///it is possible os == oe
    // fprintf(stderr, "[M::%s] s0::%ld, e0::%ld, iws::%ld, iwe::%ld\n", __func__, s0, e0, iws, iwe);
    ///make sure that this alignment block could cover the whole [iws, iwe) -> s0 < iws && e0 > iwe
    // if((s0 >= iws) || (e0 <= iwe)) return -1;///!(s0 < iws && e0 > iwe) -> only consider the alignment that could cover the whole [s, e)
    if(!(((s0 < iws) || (s0 == 0)) && ((e0 > iwe) || (e0 == ql)))) return -1;///!(s0 < iws && e0 > iwe) -> only consider the alignment that could cover the whole [s, e)

    set_bit_extz_t(ez, (*z), wk);
    if(!ez.cigar.n) return -1;
    int64_t cn = ez.cigar.n; uint16_t op; int64_t ws, we, wts, wte, ovlp, cc = 0, cci; 
    if((ck < 0) || (ck > cn)) {//(*ck) == cn is allowed
        ck = 0; xk = ez.ts; yk = ez.ps;
    }
    
    while (ck > 0 && xk >= s) {///x -> t; y -> p; first insertion and then match/mismatch
        --ck;
        op = ez.cigar.a[ck]>>14;
        if(op!=2) xk -= (ez.cigar.a[ck]&(0x3fff));
        if(op!=3) yk -= (ez.cigar.a[ck]&(0x3fff)); 
    }

    // char cm[4]; cm[0] = 'M'; cm[1] = 'S'; cm[2] = 'I'; cm[3] = 'D';  
    //some cigar will span s or e
    ii[0] = ii[1] = it[0] = it[1] = -1; res = cc = 0;
    while (ck < cn && xk < e) {//[s, e)
        ws = xk; wts = yk;
        op = ez.cigar.a[ck]>>14; ol = (ez.cigar.a[ck]&(0x3fff));
        ///op == 3: -> x; op == 2: -> y;
        if(op!=2) xk += ol;
        if(op!=3) yk += ol; 
        ck++; we = xk; wte = yk;

        // if(s == 10480) {
        //     fprintf(stderr, "[%ld, %ld)\t%c\n", ws, we, cm[op]);
        // }

        os = MAX(s, ws); oe = MIN(e, we);
        ovlp = ((oe>os)? (oe-os):0);

        if(s == e) {///insertion in comparsion with the reference
            if(op != 0 || ws >= s || we <= e || e != iwe || s != iws) continue;///must be a match
        } else {
            if(op != 2) {
                if(!ovlp) continue;
            } else {///ws == we
                if(ws < s || ws >= e) continue;
            }
        }
        
        
        if(ii[0] == -1) {
            ii[0] = os;
            if(op < 2) {
                it[0] = os - ws + wts;
            } else {///op == 2: more y; p == 3: more x
                it[0] = wts;
            } 
        }

        ii[1] = oe;
        if(op < 2) {
            it[1] = oe - ws + wts;
        } else {///op == 2: more y; p == 3: more x
            it[1] = wte;
        } 




        if(op != 2) ol = oe-os;
        cc += ol;
        // if(s == 11851 && e == 11853) {
        // if(!ol) fprintf(stderr, "%ld%c", ol, cm[op]);
        // }
        if(cc <= simp_vote_len) {
            for (cci = 0; cci < ol; cci++) {
                res <<= 2; res |= op;
            }
        }
    }

    while (ck < cn && xk <= e) {//[s, e)
        ws = xk; wts = yk;
        op = ez.cigar.a[ck]>>14; ol = (ez.cigar.a[ck]&(0x3fff));
        if(op != 2) break;
        yk += (ez.cigar.a[ck]&(0x3fff)); 
        ck++; we = xk; wte = yk;
        if(ws >= s && ws <= e) {
            
            if(ii[0] == -1) {
                ii[0] = ws; it[0] = wts;
            }
            ii[1] = we; it[1] = wte;
            
            cc += ol;
            // if(s == 11851 && e == 11853) {
            //     fprintf(stderr, "%ld%c", ol, cm[op]);
            // }
            if(cc <= simp_vote_len) {
                for (cci = 0; cci < ol; cci++) {
                    res <<= 2; res |= op;
                }
            }
        }
    }
    // if(s == 11851 && e == 11853) {
    //     fprintf(stderr, "\tx::[%ld, %ld)\ty::[%ld, %ld)\tcc::%ld\n", ii[0], ii[1], it[0], it[1], cc);
    // }
    if((cc <= simp_vote_len) 
            && (ii[1] >= ii[0]) && (ii[1] - ii[0] <= simp_vote_len) 
            && (it[1] >= it[0]) && (it[1] - it[0] <= simp_vote_len)) {
        // ii[0] = ii[0] - s; ii[1] = e - ii[1];
        if((ii[0] == iws) && (ii[1] == iwe)) {
            op = cc; op <<= 12; res |= op;

            char *ystr = NULL; res <<= 16; cc = it[1] - it[0]; op = 0;
            if(cc > 0) {
                UC_Read_resize(*tu, (it[1] - it[0])); ystr = tu->seq;
                recover_UC_Read_sub_region(ystr, it[0], (it[1] - it[0]), z->y_pos_strand, rref, z->y_id);
                
                for (cci = 0; cci < cc; cci++) {
                    op <<= 2; op |= seq_nt6_table[(uint32_t)(ystr[cci])];
                }
            } 
            res |= op;

            op = it[1] - it[0]; op <<= 12; res |= op;
        } else {
            res = (uint32_t)-1;
        }
    } else {
        res = (uint32_t)-1;
    }
    

    ovlp_cur_xoff(*p) = xk; ovlp_cur_yoff(*p) = yk; ovlp_cur_coff(*p) = ck; ovlp_cur_ylen(*p) = 0;
    
    return res;
}

typedef struct {
	All_reads *rref;
    UC_Read *tu;    
    uint64_t s, e, n0, n1, id, rev;
} rr_seq_t;

inline void insert_cns_arc(cns_gfa *cns, uint32_t src, uint32_t des, uint32_t is_ou, uint32_t plus0, uint32_t rid)
{
    if(src >= cns->n) {
        fprintf(stderr, "[M::%s] rid::%u, src::%u, des::%u, (*cns).n::%u\n", __func__, rid, src, des, (uint32_t)(*cns).n);
        exit(1);
    }
    cns_arc *p, t; kv_pushp(cns_arc, (*cns).a[src].arc, &p);
    p->f = 0; p->sc = plus0; p->v = des;
    if(is_ou) {
        (*cns).a[src].arc.nou++;
        if((*cns).a[src].arc.nou < (*cns).a[src].arc.n) {
            t = (*cns).a[src].arc.a[(*cns).a[src].arc.nou-1]; 
            (*cns).a[src].arc.a[(*cns).a[src].arc.nou-1] = *p;
            *p = t;
        }
    } 
}

inline uint32_t insert_cns_node(cns_gfa *cns)
{
    cns_t *p; uint32_t m0; 
    if (((*cns)).n == ((*cns)).m) { 
        m0 = ((*cns)).m;
        ((*cns)).m = ((*cns)).m? ((*cns)).m<<1 : 2; 
        ((*cns)).a = (cns_t*)realloc(((*cns)).a, sizeof(cns_t) * ((*cns)).m); 
        if(((*cns)).m > m0) {
            memset(((*cns)).a + m0, 0, sizeof(cns_t)*(((*cns)).m-m0));
        }
    } 
    *(&p) = &((*cns)).a[((*cns)).n++];
    p->arc.n = p->arc.nou = 0;
    p->c = p->f = p->sc = 0;
    return ((*cns)).n - 1;
}

inline uint32_t add_cns_arc(cns_gfa *cns, uint32_t src, uint32_t des, uint32_t is_ou, uint32_t plus)
{
    uint32_t k, s, e;
    if(is_ou) {
        s = 0; e = (*cns).a[src].arc.nou;
    } else {
        s = (*cns).a[src].arc.nou; e = (*cns).a[src].arc.n;
    }

    for (k = s; k < e; k++) {
        if((*cns).a[src].arc.a[k].v == des) {
            (*cns).a[src].arc.a[k].sc += plus;
            break;
        }
    }
    
    return ((k < e)?(1):(0));
}

inline void prt_cns_arc(cns_gfa *cns, uint32_t src, const char* cmd)
{
    uint32_t k;
    fprintf(stderr, "\n%s\t[M::%s] src::%u, sc::%u, c::%u\n", cmd, __func__, src, (*cns).a[src].sc, (*cns).a[src].c);
    for (k = 0; k < (*cns).a[src].arc.n; k++) {
        fprintf(stderr, "%s\t[M::%s] des::%u, sc::%u, is_ou::%u\n", cmd, __func__, (*cns).a[src].arc.a[k].v, (*cns).a[src].arc.a[k].sc, k<(*cns).a[src].arc.nou?1:0);
    }
}

inline uint32_t get_cns_arc_bp(cns_gfa *cns, uint32_t src, uint32_t bp, uint32_t is_ou, uint32_t av_bp)
{
    uint32_t k, s, e;
    if(is_ou) {
        s = 0; e = (*cns).a[src].arc.nou;
    } else {
        s = (*cns).a[src].arc.nou; e = (*cns).a[src].arc.n;
    }

    for (k = s; k < e; k++) {
        if((*cns).a[src].arc.a[k].v == 0 || (*cns).a[src].arc.a[k].v == 1) continue;
        if(av_bp && (*cns).a[src].arc.a[k].v >= (*cns).bb0 && (*cns).a[src].arc.a[k].v < (*cns).bb1) continue;///no backbone
        if((*cns).a[(*cns).a[src].arc.a[k].v].c == bp) {
            return k;
        }
    }
    
    return ((uint32_t)-1);
}

inline uint32_t add_cns_arc_bp(cns_gfa *cns, uint32_t src, uint32_t bp, uint32_t plus0, uint32_t rid, uint32_t av_bp)
{
    uint32_t rr, des;
    rr = get_cns_arc_bp(cns, src, bp, 1, av_bp);
    if(rr != ((uint32_t)-1)) {///find an existing node
        des = (*cns).a[src].arc.a[rr].v;
        (*cns).a[des].sc++;
        (*cns).a[src].arc.a[rr].sc += plus0;

        rr = add_cns_arc(cns, des, src, 0, plus0); 
        // if(rr == 0) {
        //     fprintf(stderr, "[M::%s] src::%u -> des::%u\n", __func__, src, des);
        //     prt_cns_arc(cns, src);
        //     prt_cns_arc(cns, des);
        // }
        assert(rr);

        return des;
    } else {///create a new node
        des = insert_cns_node(cns);
        (*cns).a[des].sc++; (*cns).a[des].c = bp;
        insert_cns_arc(cns, src, des, 1, plus0, rid); 
        insert_cns_arc(cns, des, src, 0, plus0, rid);
    }

    return des;
}

void init_cns_g(cns_gfa *cns, char *s, uint64_t sl, uint32_t ed_w, uint32_t rid)
{
    uint32_t m0 = cns->m, m1 = sl + 2, k; cns_t *p;
    if ((*cns).m < (m1)) { ///equal to kv_resize()
        (*cns).m = (m1); 
        (--((*cns).m), ((*cns).m)|=((*cns).m)>>1, ((*cns).m)|=((*cns).m)>>2, ((*cns).m)|=((*cns).m)>>4, ((*cns).m)|=((*cns).m)>>8, ((*cns).m)|=((*cns).m)>>16, ++((*cns).m)); 
        (*cns).a = (cns_t*)realloc((*cns).a, sizeof(cns_t) * (*cns).m); 
        if((*cns).m > m0) {
            memset((*cns).a + m0, 0, sizeof(cns_t)*((*cns).m-m0));
        }
    }
    (*cns).n = 0; (*cns).si = 0; (*cns).ei = 1; (*cns).off = 2;

    p = &((*cns).a[(*cns).n++]); p->arc.nou = p->arc.n = p->c = p->f = p->sc = 0; ///beg
    p = &((*cns).a[(*cns).n++]); p->arc.nou = p->arc.n = p->c = p->f = p->sc = 0; ///end
    (*cns).bb0 = (*cns).n;

    for (k = 0; k < sl; k++) {
        p = &((*cns).a[(*cns).n++]); p->arc.nou = p->arc.n = p->f = 0;
        p->c = seq_nt6_table[(uint32_t)(s[k])]; p->sc = 1;
        
        if(k + 1 < sl) insert_cns_arc(cns, k + (*cns).off, k + 1 + (*cns).off, 1, ed_w, rid);

        if(k > 0) insert_cns_arc(cns, k + (*cns).off, k - 1 + (*cns).off, 0, ed_w, rid);
    }
    
    if(sl) {
        insert_cns_arc(cns, (*cns).si, 0 + (*cns).off, 1, ed_w, rid); insert_cns_arc(cns, 0 + (*cns).off, (*cns).si, 0, ed_w, rid);
        insert_cns_arc(cns, sl - 1 + (*cns).off, (*cns).ei, 1, ed_w, rid); insert_cns_arc(cns, (*cns).ei, sl - 1 + (*cns).off, 0, ed_w, rid);
    } else {
        insert_cns_arc(cns, (*cns).si, (*cns).ei, 1, ed_w, rid); 
        insert_cns_arc(cns, (*cns).ei, (*cns).si, 0, ed_w, rid);
    }

    // prt_cns_arc(cns, 0, __func__);
    // prt_cns_arc(cns, 1, __func__);

    (*cns).bn = (*cns).n; (*cns).bb1 = (*cns).n;
}

///[s, e)
uint32_t push_cns_c0(cns_gfa *cns, uint64_t s0, uint64_t s, uint64_t e, uint32_t plus0, uint32_t rid)
{
    if(s > e) return s0;///it is possible that s == e
    uint32_t rr, k, re; 
    
    // rr = add_cns_arc(cns, s0, s, 1, plus0); assert(rr);
    // rr = add_cns_arc(cns, s, s0, 0, plus0); assert(rr);
    if(!add_cns_arc(cns, s0, s, 1, plus0)) {
        insert_cns_arc(cns, s0, s, 1, plus0, rid);
        insert_cns_arc(cns, s, s0, 0, plus0, rid);
    } else {
        rr = add_cns_arc(cns, s, s0, 0, plus0); assert(rr);
    }
    (*cns).a[s].sc++; re = s;

    for (k = s + 1; k < e; k++) {
        rr = add_cns_arc(cns, k-1, k, 1, /**1**/plus0); 
        // if(!rr) {
        //     fprintf(stderr, "[M::%s] s0::%u, s::%u\n", __func__, k-1, k);
        //     prt_cns_arc(cns, k-1, __func__); prt_cns_arc(cns, k, __func__);
        // }
        assert(rr);



        rr = add_cns_arc(cns, k, k-1, 0, /**1**/plus0); assert(rr);
        (*cns).a[k].sc++; re = k;
    }
    
    return re;
}

uint32_t trace_cns_bp(cns_gfa *cns, uint64_t s0, char *tstr, uint64_t tl, asg32_v* b32, uint32_t plus0, uint32_t *rn, uint64_t max_trace, uint32_t av_bp)
{
    (*rn) = s0;
    if(tl <= 0) return 0;
    // fprintf(stderr, "\n[M::%s] tl::%lu\n", __func__, tl);
    uint32_t k, i, s, e, m, bp, nm, bi, bn0, src, des, ff = 0; b32->n = 0;

    kv_push(uint32_t, (*b32), s0); kv_push(uint32_t, (*b32), ((uint32_t)-1)); nm = 2;
    // if(s0 == 2863) {
    //     fprintf(stderr, "***0***[M::%s] s::%lu\tb32->n::%u\n", __func__, s0, (uint32_t)b32->n);
    // }

    for (i = 0; (i < tl) && (!ff); i++) {
        bp = seq_nt6_table[(uint32_t)(tstr[i])]; bn0 = b32->n;
        for (bi = bn0 - nm; bi < bn0; bi += 2) {
            m = b32->a[bi]; s = 0; e = (*cns).a[m].arc.nou;
            for (k = s; k < e; k++) {
                if((*cns).a[m].arc.a[k].v == 0 || (*cns).a[m].arc.a[k].v == 1) continue;
                if(av_bp && (*cns).a[m].arc.a[k].v >= (*cns).bb0 && (*cns).a[m].arc.a[k].v < (*cns).bb1) continue;///no backbone
                if((*cns).a[(*cns).a[m].arc.a[k].v].c == bp) {
                    kv_push(uint32_t, (*b32), (*cns).a[m].arc.a[k].v);
                    kv_push(uint32_t, (*b32), bi);

                    // if(s0 == 2863) {
                    //     fprintf(stderr, "***1***[M::%s] s::%u\tb32->n::%u\n", __func__, (*cns).a[m].arc.a[k].v, (uint32_t)b32->n);
                    // }
                    // if((i + 1) == tl) break;///quick end
                    // if(b32->n > max_trace) break;///redue the size of b32
                    if(((i + 1) == tl) || (b32->n > max_trace)) {
                        ff = 1; break;
                    }
                }
            }
            if(ff) break;
        }

        if(b32->n <= bn0) {///no node
            break;
        } else {
            nm = b32->n - bn0;
        } 
    }
    // fprintf(stderr, "[M::%s] b32->n::%u, nm::%u\n", __func__, (uint32_t)b32->n, nm);

    // if(s0 == 2863) {
    //     fprintf(stderr, "[M::%s] i::%u\tnm::%u\tb32->n::%u\n", __func__, i, nm, (uint32_t)b32->n);
    // }
    if(i > 0 && nm > 0) {
        (*rn) = b32->a[b32->n - nm];
        for (bi = b32->n - nm; b32->a[bi + 1] != ((uint32_t)-1); bi = b32->a[bi + 1]) {
            // fprintf(stderr, "[M::%s] bi::%u, p_bi::%u\n", __func__, bi, b32->a[bi + 1]);
            des = b32->a[bi]; src = b32->a[b32->a[bi + 1]]; /**bp = ((src!=s0)?(1):(plus0));**/
            m = add_cns_arc(cns, src, des, 1, /**bp**/plus0); assert(m);
            m = add_cns_arc(cns, des, src, 0, /**bp**/plus0); assert(m);
            (*cns).a[des].sc++;

            // if(s0 == 2863) {
            //     fprintf(stderr, "***2***[M::%s] src::%u\tdes::%u\n", __func__, src, des);
            // }
        }
    } else {
        i = 0;
    }

    return i;
} 

///[s, e)
uint32_t push_cns_c1(cns_gfa *cns, uint64_t s0, char *tstr, uint64_t tl, uint32_t plus0, asg32_v* b32, uint64_t max_trace, uint32_t rid)
{
    if(tl <= 0) return s0;
    uint32_t /**rr = plus0,**/ k, re = s0; 
    k = trace_cns_bp(cns, s0, tstr, tl, b32, plus0, &re, max_trace, 1);
    /**if(k > 0) rr = 1;**/

    // if(s0 == 2863) {
    //     fprintf(stderr, "[M::%s] (%.*s)\ts0::%lu\tk::%u\ttl::%lu\tre::%u\n", __func__, tstr?((int)(tl)):0, tstr, s0, k, tl, re);
    // }
    //     fprintf(stderr, "[M::%s] s0::%u, s::%u\n", __func__, k-1, k);
        //     prt_cns_arc(cns, k-1, __func__); prt_cns_arc(cns, k, __func__);

    for (; k < tl; k++) {///the weight of (s0 -> tstr[0]) might be 0
        re = add_cns_arc_bp(cns, re, seq_nt6_table[(uint32_t)(tstr[k])], /**rr**/plus0, rid, 1); /**rr = 1;**/
    }
    
    return re;
}

uint64_t append_cns_g(cns_gfa *cns, char *tstr, uint64_t tl, uint64_t qs, uint64_t qe, uint64_t cp, uint64_t cl, uint64_t pe, asg32_v* b32, uint64_t max_trace, uint32_t ed_w, uint32_t rid, int64_t insert_pos)
{
    // fprintf(stderr, ">q::[%lu, %lu)\n", qs, qe);
    uint64_t s0 = pe, /**plus0 = 1,**/ ns = qs + cns->off, ne = qe + cns->off;
    if(pe == ((uint64_t)-1)) {
        if(qs > 0) {
            s0 = qs - 1 + cns->off;///just before node in backbone
        } else {
            s0 = 0;//beg
        }
        // plus0 = 0;
    }

    // fprintf(stderr, "+n_nodes::%u, tl::%lu, qs::%lu, qe::%lu\n", (uint32_t)cns->n, tl, qs, qe);

    if(cp == 0) {
        if((cl == 0) && (cp == 0) && (qs == qe) && (((int64_t)qe) == insert_pos)) {
            s0 = 0;//beg
            ns = ne = 1;//end
            /**plus0 = 1;**/
        }
        // if(cp == 0) {
        //     fprintf(stderr, "cp::%lu, cl::%lu, qs::%lu, qe::%lu, s0::%lu, ns::%lu, ne::%lu, plus0::%lu\n", cp, cl, qs, qe, s0, ns, ne, plus0);
        // }
        return push_cns_c0(cns, s0, ns, ne, /**plus0,**/ed_w, rid);
    } else if(cp == 1 || cp == 2) { ///cp == 2: more y -> insertion
        return push_cns_c1(cns, s0, tstr, tl, /**plus0,**/ed_w, b32, max_trace, rid);
    } else { ///more x -> do nothing
        return s0;
    }
}

char *get_sub_seq(rr_seq_t *ssq, uint64_t s, uint64_t e)
{
    if(s >= e) return NULL;

    if(s >= ssq->s && e <= ssq->e) {
        return ssq->tu->seq + s - ssq->s;
    }

    uint64_t l = e - s;
    if(ssq->s >= ssq->e) {
        if(l < ssq->n0) l = ssq->n0;
    } else {
        if(l < ssq->n1) l = ssq->n1;
    }

    ssq->s = s; ssq->e = s + l;
    if(ssq->e > Get_READ_LENGTH((*(ssq->rref)), ssq->id)) {
        ssq->e = Get_READ_LENGTH((*(ssq->rref)), ssq->id);
        l = ssq->e - ssq->s;
    }
    UC_Read_resize((*(ssq->tu)), ((int64_t)l)); 
    recover_UC_Read_sub_region(ssq->tu->seq, ssq->s, l, ssq->rev, ssq->rref, ssq->id);
    return ssq->tu->seq;
}


///[s, e)
uint32_t extract_sub_cigar_cns(overlap_region *z, int64_t s, int64_t e, int64_t iws, int64_t iwe, int64_t s_end, rr_seq_t *ssq, ul_ov_t *p, cns_gfa *cns, asg32_v* b32, uint64_t max_trace, uint32_t ed_w, uint32_t rid)
{
    // if(s == 10539 && e == 10760) {
        // fprintf(stderr, "\n>>>>>>iw::[%ld, %ld)\tw::[%ld, %ld)\tox::[%u, %u)<<<<<<\n", iws, iwe, s, e, z->x_pos_s, z->x_pos_e + 1);
    // }
    
    int64_t wk = ovlp_cur_wid(*p), xk = ovlp_cur_xoff(*p), yk = ovlp_cur_yoff(*p), ck = ovlp_cur_coff(*p), os, oe, ots, ote, ol, insert_pos = ((iws == iwe)? (0): (-1));
    bit_extz_t ez; int64_t bd = ovlp_bd(*p), s0, e0, ii[2], it[2]; uint64_t pe = (uint64_t)-1;
    s0 = ((int64_t)(z->w_list.a[wk].x_start)) + bd; 
    e0 = ((int64_t)(z->w_list.a[wk].x_end)) + 1 - bd;
    if(s < s0) {s = s0;} if(e > e0) {e = e0;}///exclude boundary
    if(s > e) return -1;///it is possible s == e
    os = MAX(s, s0); oe = MIN(e, e0);
    if(oe < os) return -1;///it is possible os == oe

    set_bit_extz_t(ez, (*z), wk);
    if(!ez.cigar.n) return -1;
    int64_t cn = ez.cigar.n; uint16_t op; int64_t ws, we, wts, wte, ovlp; char *tstr;
    if((ck < 0) || (ck > cn)) {//(*ck) == cn is allowed
        ck = 0; xk = ez.ts; yk = ez.ps;
    }

    while (ck > 0 && xk >= s) {///x -> t; y -> p; first insertion and then match/mismatch
        --ck;
        op = ez.cigar.a[ck]>>14;
        if(op!=2) xk -= (ez.cigar.a[ck]&(0x3fff));
        if(op!=3) yk -= (ez.cigar.a[ck]&(0x3fff)); 
    }

    if(s_end == 0 && s == iws) s_end = 0;
    else s_end = 1;

    // if(s_end == 0 || s != iws) {///do not conside the insertion before s
    //     while (ck < cn && xk < s) {
    //     }
    // }

    // if(s == 10539 && e == 10760) {
        // fprintf(stderr, "ck::%ld, cn::%ld, xk::%ld, yk::%ld\n", ck, cn, xk, yk);
    // }

    // char cm[4]; cm[0] = 'M'; cm[1] = 'S'; cm[2] = 'I'; cm[3] = 'D';  
    //some cigar will span s or e
    ii[0] = ii[1] = it[0] = it[1] = -1; 
    ssq->s = ssq->e = 0; ssq->n0 = e - s; 
    ssq->id = z->y_id; ssq->rev = z->y_pos_strand;
    if(ssq->n0 == 0) {ssq->n0 = ssq->n1;} 

    while (ck < cn && xk < e) {//[s, e)
        ws = xk; wts = yk;
        op = ez.cigar.a[ck]>>14; ol = (ez.cigar.a[ck]&(0x3fff));
        
        for (ck++; (ck < cn) && (op == (ez.cigar.a[ck]>>14)); ck++) {
            ol += (ez.cigar.a[ck]&(0x3fff));
        }
        ///op == 3: -> x; op == 2: -> y;
        if(op!=2) xk += ol;
        if(op!=3) yk += ol; 
        we = xk; wte = yk;

        // fprintf(stderr, "ck::%ld, cn::%ld, op::%u, ol::%ld\n", ck, cn, op, ol);

        os = MAX(s, ws); oe = MIN(e, we);
        ovlp = ((oe>os)? (oe-os):0);

        if(s == e) {///insertion in comparsion with the reference
            if(op != 0 || ws >= s || we <= e || e != iwe || s != iws) continue;///must be a match
        } else {
            if(op != 2) {
                if(!ovlp) continue;
            } else {///ws == we
                if(ws < s || ws >= e) continue;
            }
        }
        
        if((s_end == 0) && (op == 2) && (ws == s)) continue;///skip the insertion just before s
        
        

        if(op < 2) {
            ots = os - ws + wts; ote = oe - ws + wts;
        } else {///op == 2: more y; p == 3: more x
            ots = wts; ote = wte;
        } 



        if(ii[0] == -1) {
            ii[0] = os; it[0] = ots;
            // if(op < 2) {
            //     it[0] = os - ws + wts;
            // } else {///op == 2: more y; p == 3: more x
            //     it[0] = wts;
            // } 
        }

        ii[1] = oe; it[1] = ote;
        // if(op < 2) {
        //     it[1] = oe - ws + wts;
        // } else {///op == 2: more y; p == 3: more x
        //     it[1] = wte;
        // } 




        if(op != 2) ol = oe-os;

        tstr = NULL;
        if(op != 0) tstr = get_sub_seq(ssq, ots, ote);

        // if(s == 10539 && e == 10760) {
            // fprintf(stderr, "+0-%ld%c(%.*s)\tpe::%lu", ol, cm[op], tstr?((int)(ote - ots)):0, tstr, pe);
        // }
        // fprintf(stderr, ">q::[%ld, %ld)\n", ws, we);
        // fprintf(stderr, "%ld%c(%.*s)", ol, cm[op], tstr?((int)(ote - ots)):0, tstr);

        pe = append_cns_g(cns, tstr, ote - ots, os - iws, oe - iws, op, ol, pe, b32, max_trace, ed_w, rid, insert_pos);

        // if(s == 10539 && e == 10760) {
            // fprintf(stderr, "+1-pe::%lu\n", pe);
        // }
    }

    while (ck < cn && xk <= e) {//[s, e)
        ws = xk; wts = yk;
        op = ez.cigar.a[ck]>>14; ol = (ez.cigar.a[ck]&(0x3fff));
        if(op != 2) break;

        for (ck++; (ck < cn) && (op == (ez.cigar.a[ck]>>14)); ck++) {
            ol += (ez.cigar.a[ck]&(0x3fff));
        }
        yk += ol;//yk += (ez.cigar.a[ck]&(0x3fff)); 
        we = xk; wte = yk;


        if(ws >= s && ws <= e) {
            ots = wts; ote = wte;
            if(ii[0] == -1) {
                ii[0] = ws; it[0] = ots;
            }
            ii[1] = we; it[1] = ote;
            

            tstr = NULL;
            if(op != 0) tstr = get_sub_seq(ssq, ots, ote);
            // if(s == 10539 && e == 10760) {
                // fprintf(stderr, "-0-%ld%c(%.*s)\tpe::%lu", ol, cm[op], tstr?((int)(ote - ots)):0, tstr, pe);
            // }
            // fprintf(stderr, "%ld%c(%.*s)", ol, cm[op], tstr?((int)(ote - ots)):0, tstr);

            pe = append_cns_g(cns, tstr, ote - ots, ws - iws, we - iws, op, ol, pe, b32, max_trace, ed_w, rid, insert_pos);

            // if(s == 10539 && e == 10760) {
                // fprintf(stderr, "-1-pe::%lu\n", pe);
            // }
        }
    }

    // if(s == 10539 && e == 10760) {
        // fprintf(stderr, "\tx::[%ld, %ld)\ty::[%ld, %ld)\tiw::[%ld, %ld)\n", ii[0], ii[1], it[0], it[1], iws, iwe);
    // }

    // prt_cns_arc(cns, 0, __func__);
    // prt_cns_arc(cns, 1, __func__);
    if(ii[1] == -1) return -1;///it is possible when s == e and the cigar here is not a match

    uint64_t ae = 1;
    if((ii[1] == iwe)) {
        ae = 1;///end node
    } else {
        ae = ii[1] + cns->off - iws;
    }

    // if(s == 10539 && e == 10760) {
        // fprintf(stderr, "pe::%lu, ae::%lu, n_nodes::%u, ii[1]::%ld\n", pe, ae, (uint32_t)cns->n, ii[1]);
    // }

    if(pe == ((uint64_t)-1)) pe = 0;///start node

    ///if iws == iwe and the cigar is a match, pe will be equal to ae
    if(pe != ae) {
        if(!add_cns_arc(cns, pe, ae, 1, /**ae==1?1:0**//**1**/ed_w)) {
            insert_cns_arc(cns, pe, ae, 1, /**ae==1?1:0**//**1**/ed_w, rid); 
            insert_cns_arc(cns, ae, pe, 0, /**ae==1?1:0**//**1**/ed_w, rid);
        } else {
            add_cns_arc(cns, ae, pe, 0, /**ae==1?1:0**//**1**/ed_w);
        }
    }    


    // prt_cns_arc(cns, 0, __func__);
    // prt_cns_arc(cns, 1, __func__);


    // if(s == 10539 && e == 10760) {
    //     fprintf(stderr, "-end-pe::%lu, ae::%lu\n", pe, ae);
    // }

    ovlp_cur_xoff(*p) = xk; ovlp_cur_yoff(*p) = yk; ovlp_cur_coff(*p) = ck; ovlp_cur_ylen(*p) = 0;
    
    return 1;
}


uint64_t iter_cc_idx_t(overlap_region* ol, cc_idx_t *z, int64_t s, int64_t e, uint64_t is_reduce, uint64_t is_insert, uint64_t **ra)
{
    int64_t rm_n, q[2], os, oe; ul_ov_t *cp; uint64_t m; *ra = NULL;

    // if(s == 15816 && e == 15819) {
    //     fprintf(stderr, "[M::%s] is_reduce::%lu\n", __func__, is_reduce);
    // }
    if(z->ru == 0) {
        if(is_reduce) {
            for (m = rm_n = z->srt_n; m < z->idx->n; m++) {
                cp = &(z->c_idx[z->idx->a[m]]);
                // if(s == 15816 && e == 15819) {
                //     fprintf(stderr, "-0-[M::%s] ii::%lu, ii0::%ld\n", __func__, z->idx->a[m], z->i0);
                // }
                
                q[0] = ol[ovlp_id(*cp)].w_list.a[ovlp_cur_wid(*cp)].x_start+ovlp_bd(*cp);
                q[1] = ol[ovlp_id(*cp)].w_list.a[ovlp_cur_wid(*cp)].x_end+1-ovlp_bd(*cp);
                os = MAX(q[0], s); oe = MIN(q[1], e);
                if((oe > os) || ((is_insert) && (s == e) && (s >= q[0]) && (s <= q[1]))) {
                    z->idx->a[rm_n++] = z->idx->a[m];
                }
            }
            z->idx->n = rm_n;
        }

        for (; z->i < z->srt_n; ++z->i) {
            cp = &(z->c_idx[(uint32_t)z->idx->a[z->i]]);
            // if(s == 15816 && e == 15819) {
            //     fprintf(stderr, "-1-[M::%s] ii::%u, ii0::%ld\n", __func__, (uint32_t)z->idx->a[z->i], z->i0);
            // }
            q[0] = ol[ovlp_id(*cp)].w_list.a[ovlp_cur_wid(*cp)].x_start+ovlp_bd(*cp);
            q[1] = ol[ovlp_id(*cp)].w_list.a[ovlp_cur_wid(*cp)].x_end+1-ovlp_bd(*cp);
            if(q[0] > e) break;
            if((!is_insert) && (q[0] >= e)) break;
            os = MAX(q[0], s); oe = MIN(q[1], e);
            if((oe > os) || ((is_insert) && (s == e) && (s >= q[0]) && (s <= q[1]))) {
                kv_push(uint64_t, *(z->idx), ((uint32_t)z->idx->a[z->i]));
            }
        }
    } else {
        z->ru = 0;
    }

    (*ra) = z->idx->a + z->srt_n; 
    return z->idx->n - z->srt_n;
}

void debug_inter0(overlap_region* ol, ul_ov_t *c_idx, uint64_t *idx, int64_t idx_n, uint64_t *res, int64_t res_n, int64_t s, int64_t e, uint64_t is_insert, uint64_t is_hard_check, const char *cmd)
{
    ul_ov_t *cp; int64_t q[2], a_n = 0, i, k = 0, os, oe; 
    for (i = 0; i < idx_n; i++) {
        cp = &(c_idx[(uint32_t)idx[i]]);
        q[0] = ol[ovlp_id(*cp)].w_list.a[ovlp_cur_wid(*cp)].x_start+ovlp_bd(*cp);
        q[1] = ol[ovlp_id(*cp)].w_list.a[ovlp_cur_wid(*cp)].x_end+1-ovlp_bd(*cp);

        // fprintf(stderr, "%s[M::%s] tid::%u\t%.*s\twid::%u\tq::[%u, %u)\terr::%d\toerr::%u\n", cmd, __func__, ol[ovlp_id(*cp)].y_id, (int)Get_NAME_LENGTH(R_INF, ol[ovlp_id(*cp)].y_id), Get_NAME(R_INF, ol[ovlp_id(*cp)].y_id),
        // ovlp_cur_wid(*cp), ol[ovlp_id(*cp)].w_list.a[ovlp_cur_wid(*cp)].x_start, ol[ovlp_id(*cp)].w_list.a[ovlp_cur_wid(*cp)].x_end+1, ol[ovlp_id(*cp)].w_list.a[ovlp_cur_wid(*cp)].error, ol[ovlp_id(*cp)].non_homopolymer_errors);

        os = MAX(q[0], s); oe = MIN(q[1], e);
        if((oe > os) || ((is_insert) && (s == e) && (s >= q[0]) && (s <= q[1]))) {
            a_n++; 
            // if(!(((uint32_t)idx[i]) == res[k])) {
            //     fprintf(stderr, "[M::%s] a_n::%ld\tres_n::%ld\ts::%ld\te::%ld\ti::%ld\tk::%ld\n", __func__, a_n, res_n, s, e, i, k);
            // }
            if(is_hard_check) {
                assert(((uint32_t)idx[i]) == res[k++]);
            } else {
                for (; (k < res_n) && (((uint32_t)idx[i]) != res[k]); k++);
                assert(k < res_n);
            }
        }
    }
    // if(a_n != res_n) {
    //     fprintf(stderr, "[M::%s] a_n::%ld\tres_n::%ld\ts::%ld\te::%ld\tidx_n::%ld\n", __func__, a_n, res_n, s, e, idx_n);
    // }
    if(is_hard_check) {
        assert(a_n == res_n);
    } else {
        assert(a_n <= res_n);
    }
}

void prt_cigar0(uint64_t in, int64_t len)
{
    int64_t k; uint64_t mp;
    char cm[4]; cm[0] = 'M'; cm[1] = 'S'; cm[2] = 'I'; cm[3] = 'D';  
    for (k = 0; k < len; k++) {
        mp = len - 1 - k; mp <<= 1;
        fprintf(stderr, "%c", cm[(in >> mp)&3]);
    }
    fprintf(stderr, "\n");
}

void prt_bp0(uint64_t in, int64_t len)
{
    int64_t k; uint64_t mp;
    char cm[4]; cm[0] = 'A'; cm[1] = 'C'; cm[2] = 'G'; cm[3] = 'T';  
    for (k = 0; k < len; k++) {
        mp = len - 1 - k; mp <<= 1;
        fprintf(stderr, "%c", cm[(in >> mp)&3]);
    }
    fprintf(stderr, "\n");
}

inline uint64_t cal_occ_w(uint64_t n_hf, uint64_t n_a, uint64_t h_rate, uint64_t o_rate)
{
    return (n_hf * h_rate) + ((n_a - n_hf) * o_rate);
}

uint64_t cns_gen0(overlap_region* ol, All_reads *rref, uint64_t s, uint64_t e, uint64_t ql, UC_Read* tu, cc_idx_t *idx, uint64_t occ_tot, double occ_max, asg32_v* b32, uint64_t o_rate, uint64_t h_rate, uint64_t q_hf, uint32_t *rc)
{
    if(e > s + simp_vote_len) return 0;///too long

    uint64_t *id_a = NULL, id_n, an = 0, fan = 0, oc[2], och; b32->n = 0; uint32_t m, *a = NULL; uint8_t f_hf = (((o_rate == ((uint64_t)-1)) || (h_rate == ((uint64_t)-1)))?(0):(1));
    id_n = iter_cc_idx_t(ol, idx, s, e, idx->rr, ((s==e)?1:0), &id_a);
    // debug_inter0(ol, idx->c_idx, idx->idx->a + idx->i0, idx->srt_n - idx->i0, id_a, id_n, s, e, ((s==e)?1:0), 0, "-1-");
    uint64_t zi, k, l, q[2], os, oe; ul_ov_t *p; overlap_region *z; idx->rr = 0; uint64_t w, mw, ow[2];
    // fprintf(stderr, "[M::%s] [%lu, %lu) id_n::%lu\n", __func__, s, e, id_n);
    for (k = 0; k < id_n; k++) {
        p = &(idx->c_idx[id_a[k]]); z = &(ol[ovlp_id(*p)]); 
        q[0] = z->w_list.a[ovlp_cur_wid(*p)].x_start+ovlp_bd(*p);
        q[1] = z->w_list.a[ovlp_cur_wid(*p)].x_end+1-ovlp_bd(*p);

        // if(s == 11851 && e == 11853) {
        //     fprintf(stderr, "[M::%s] tid::%u\t%.*s\twid::%u\tq::[%u, %u)\terr::%d\toerr::%u\n", __func__, ol[ovlp_id(*p)].y_id, (int)Get_NAME_LENGTH(R_INF, ol[ovlp_id(*p)].y_id), Get_NAME(R_INF, ol[ovlp_id(*p)].y_id),
        //         ovlp_cur_wid(*p), ol[ovlp_id(*p)].w_list.a[ovlp_cur_wid(*p)].x_start, ol[ovlp_id(*p)].w_list.a[ovlp_cur_wid(*p)].x_end+1, ol[ovlp_id(*p)].w_list.a[ovlp_cur_wid(*p)].error, ol[ovlp_id(*p)].non_homopolymer_errors);
        // }
        
        if(q[1] <= e) idx->rr = 1;
        os = MAX(q[0], s); oe = MIN(q[1], e);
        // if((oe > os) || ((s == e) && (s >= q[0]) && (s <= q[1]))) {
        if((oe > os) || ((s == e) && (s > q[0]) && (s < q[1]))) {
        // if(oe >= os) {
            ///[-4-][-12-][-4-][-12-]
            ///[cigar_len][cigar][base_len][base]
            m = extract_sub_cigar_ii(z, ql, rref, os, oe, s, e, tu, p); an++; fan += ovlp_hf((*p));
            if(m != ((uint32_t)-1)) {///no gap in both sides
                if(f_hf) {
                    m <<= 1; m |= ((uint32_t)ovlp_hf((*p))); 
                } 
                kv_push(uint32_t, *b32, m);
            }
        }
    }

    ow[0] = ow[1] = 1;///for initial
    oc[0] = b32->n; oc[1] = an + 1; //+1 for the reference read
    // if(s == 11851 && e == 11853) {
    //     fprintf(stderr, "-0-[M::%s] oc[0]::%lu, oc[1]::%lu\n", __func__, oc[0], oc[1]);
    // }
    if(((oc[0] > (oc[1]*occ_max)) && (oc[0] > (oc[1]-oc[0])) && (oc[1] >= occ_tot) && (oc[0] > 1))) {
        radix_sort_ec32(b32->a, b32->a+b32->n); an = 0;
        if(!f_hf) {
            for (k = 1, l = 0; k <= b32->n; ++k) {
                if (k == b32->n || b32->a[k] != b32->a[l]) {
                    if(k - l > an) {
                        an = k - l; a = b32->a + l;
                    }
                    l = k;
                }
            }      
        } else {
            for (k = 1, l = 0, mw = -1; k <= b32->n; ++k) {
                if (k == b32->n || (b32->a[k]>>1) != (b32->a[l]>>1)) {
                    for (zi = l, och = 0; zi < k; zi++) {
                        och += b32->a[zi] & 1;
                    }
                    w = cal_occ_w(och, k - l, h_rate, o_rate);                    
                    if(w > mw) {
                        an = k - l; a = b32->a + l; mw = w;
                    }
                    l = k;
                }
            }      
        }
        
        oc[0] = an;
        if(f_hf) {
            ow[0] = mw;
            ow[1] = cal_occ_w(fan + q_hf, an + 1, h_rate, o_rate);  
        }
        // fprintf(stderr, "-1-[M::%s] oc[0]::%lu, oc[1]::%lu\n", __func__, oc[0], oc[1]);
        if((oc[0] > (oc[1]*occ_max)) && (oc[0] > (oc[1]-oc[0])) && (oc[1] >= occ_tot) && (oc[0] > 1) && ((!f_hf) || ((ow[0] > (ow[1]*occ_max)) && (ow[0] > (ow[1] - ow[0]))))) {
            (*rc) = ((f_hf)?(a[0]>>1):(a[0]));
            // prt_cigar0((a[0]<<4)>>20, a[0]>>28);
            // prt_bp0((a[0]<<20)>>20, (a[0]<<16)>>28);
            return 1;
        }
    }

    idx->ru = 1;
    return 0;
}

inline void gen_mm_cns_arc(cns_gfa *cns, uint32_t src, uint32_t des, uint32_t sc, uint32_t f)
{
    cns_t *av = &((*cns).a[src]), *aw;
    uint32_t vk, wk;
    for (vk = 0; vk < av->arc.nou; vk++) {///out-edge of src
        if((av->arc.a[vk].v != des) || (del_cns_arc((*av), vk))) continue;
        // av->arc.a[vk].f = 1; ///not sure if we should set these edges as visited
        av->arc.a[vk].f = f;
        av->arc.a[vk].sc += sc;

        aw = &((*cns).a[des]);
        for (wk = aw->arc.nou; wk < aw->arc.n; wk++) {///in-edge of des
            if((aw->arc.a[wk].v != src) || (del_cns_arc((*aw), wk))) continue;
            // aw->arc.a[wk].f = 1; ///not sure if we should set these edges as visited
            aw->arc.a[wk].f = f;
            aw->arc.a[wk].sc += sc; 
            break;
        }

        assert(wk < aw->arc.n);
        return;
    }

    cns_arc *p, t;
    ///src -> des
    kv_pushp(cns_arc, (*cns).a[src].arc, &p);
    p->sc = sc; p->v = des;
    // p->f = 1; ///not sure if we should set these edges as visited
    p->f = f; 
    ///ou-edge
    (*cns).a[src].arc.nou++;
    if((*cns).a[src].arc.nou < (*cns).a[src].arc.n) {
        t = (*cns).a[src].arc.a[(*cns).a[src].arc.nou-1]; 
        (*cns).a[src].arc.a[(*cns).a[src].arc.nou-1] = *p;
        *p = t;
    }

    ///src <- des; in-edge
    kv_pushp(cns_arc, (*cns).a[des].arc, &p);
    p->sc = sc; p->v = src;
    // p->f = 1; ///not sure if we should set these edges as visited
    p->f = f; 
}

void del_cns_g_nn(cns_gfa *cns, uint32_t v)
{
    uint32_t w, vk, wk; cns_t *av = &((*cns).a[v]), *aw = NULL;

    for (vk = 0; vk < av->arc.nou; vk++) {///out-edge of src
        if(del_cns_arc((*av), vk)) continue;
        w = av->arc.a[vk].v; av->arc.a[vk].v = CNS_DEL_E;

        aw = &((*cns).a[w]);
        for (wk = aw->arc.nou; wk < aw->arc.n; wk++) {///in-edge of des
            if((aw->arc.a[wk].v != v) || (del_cns_arc((*aw), wk))) continue;
            aw->arc.a[wk].v = CNS_DEL_E; break;
        }
        assert(wk < aw->arc.n);
    }

    for (vk = av->arc.nou; vk < av->arc.n; vk++) {///in-edge of src
        if(del_cns_arc((*av), vk)) continue;
        w = av->arc.a[vk].v; av->arc.a[vk].v = CNS_DEL_E;

        aw = &((*cns).a[w]);
        for (wk = 0; wk < aw->arc.nou; wk++) {///out-edge of des
            if((aw->arc.a[wk].v != v) || (del_cns_arc((*aw), wk))) continue;
            aw->arc.a[wk].v = CNS_DEL_E; break;
        }
        assert(wk < aw->arc.n);
    }


    cns->a[v].arc.n = cns->a[v].arc.nou = 0;
    cns->a[v].c = cns->a[v].f = 0; cns->a[v].sc = CNS_DEL_V;
}

void merge_cns_g_in(cns_gfa *cns, uint32_t v0, asg32_v* b32)
{
    cns_t *av, *aw; uint32_t v, bp, vk, wk, wka, w, wn, nn, mn, wh, mn_k[2];

    b32->n = 0;
    kv_push(uint32_t, *b32, v0);
    while (b32->n) {
        v = b32->a[--b32->n];
        if(del_cns_nn((*cns), v)) continue;

        av = &((*cns).a[v]);
        for (bp = 0; bp < 4; bp++) {
            //nn: number of node; wh: weight
            nn = wh = 0; mn = mn_k[0] = mn_k[1] = wka = (uint32_t)-1;
            for (vk = av->arc.nou; vk < av->arc.n; vk++) {///in-edge of v
                if(del_cns_arc((*av), vk)) continue;
                w = av->arc.a[vk].v; aw = &((*cns).a[w]);
                if(aw->c != bp) continue;
                if(w == cns->si || w == cns->ei) continue;

                for (wk = wn = 0; wk < aw->arc.nou; wk++) {///out-edge of w
                    if(del_cns_arc((*aw), wk)) continue;
                    wn++; wka = wk; if(wn > 1) break;
                }

                if(wn != 1) continue;
                
                assert(aw->arc.a[wka].v == v);

                ///deal with out-edge of w
                if(nn == 0) {
                    mn = w; mn_k[0] = vk; mn_k[1] = wka;
                    wh = av->arc.a[vk].sc;
                    ///not sure if we should set these edges as visited
                    // av->arc.a[vk].f = 1; aw->arc.a[wka].f = 1;
                } else {
                    wh += aw->arc.a[wka].sc;
                }

                ///deal with in-edge of w
                ///all edges to w, should be move to mn
                if(nn > 0) {///not sure if we should set these edges as visited; affect when nn == 0
                    for (wk = aw->arc.nou; wk < aw->arc.n; wk++) {
                        if(del_cns_arc((*aw), wk)) continue;
                        ///previously, aw->arc.a[wk].v -> w
                        ///currently, aw->arc.a[wk].v -> mn
                        /// if(nn == 0), then mn = w
                        gen_mm_cns_arc(cns, aw->arc.a[wk].v, mn, aw->arc.a[wk].sc/**(nn?(aw->arc.a[wk].sc):(0))**/, aw->arc.a[wk].f);///not sure if we should set these edges as visited
                    }
                }

                ///mn != w
                if(nn > 0) del_cns_g_nn(cns, w);

                nn++;
            }

            if(nn) {
                aw = &((*cns).a[mn]);
                av->arc.a[mn_k[0]].sc = aw->arc.a[mn_k[1]].sc = wh;
                // merge_cns_g_in(cns_gfa *cns, uint32_t v, asg32_v* b32)
                kv_push(uint32_t, *b32, mn);
            }
        }
    }
}

void merge_cns_g_ou(cns_gfa *cns, uint32_t v0, asg32_v* b32)
{
    cns_t *av, *aw; uint32_t v, bp, vk, wk, wka, w, wn, nn, mn, wh, mn_k[2];

    b32->n = 0;
    kv_push(uint32_t, *b32, v0);
    while (b32->n) {
        v = b32->a[--b32->n];
        if(del_cns_nn((*cns), v)) continue;
    
        av = &((*cns).a[v]);
        for (bp = 0; bp < 4; bp++) {
            //nn: number of node; wh: weight
            nn = wh = 0; mn = mn_k[0] = mn_k[1] = wka = (uint32_t)-1;
            for (vk = 0; vk < av->arc.nou; vk++) {///ou-edge of v
                if(del_cns_arc((*av), vk)) continue;
                w = av->arc.a[vk].v; aw = &((*cns).a[w]);
                if(aw->c != bp) continue;
                if(w == cns->si || w == cns->ei) continue;

                for (wk = aw->arc.nou, wn = 0; wk < aw->arc.n; wk++) {///in-edge of w
                    if(del_cns_arc((*aw), wk)) continue;
                    wn++; wka = wk; if(wn > 1) break;
                }

                if(wn != 1) continue;
                
                assert(aw->arc.a[wka].v == v);


                ///deal with in-edge of w
                if(nn == 0) {
                    mn = w; mn_k[0] = vk; mn_k[1] = wka;
                    wh = av->arc.a[vk].sc;
                    ///not sure if we should set these edges as visited
                    // av->arc.a[vk].f = 1; aw->arc.a[wka].f = 1;
                } else {
                    wh += aw->arc.a[wka].sc;
                }


                ///deal with ou-edge of w
                ///all edges from w, should be move to mn
                if(nn > 0) {///not sure if we should set these edges as visited; affect when nn == 0
                    for (wk = 0; wk < aw->arc.nou; wk++) {
                        if(del_cns_arc((*aw), wk)) continue;
                        ///previously, w -> aw->arc.a[wk].v
                        ///currently, mn -> aw->arc.a[wk].v 
                        /// if(nn == 0), then mn = w
                        gen_mm_cns_arc(cns, mn, aw->arc.a[wk].v, aw->arc.a[wk].sc/**(nn?(aw->arc.a[wk].sc):(0))**/, aw->arc.a[wk].f);///not sure if we should set these edges as visited
                    }
                }

                ///mn != w
                if(nn > 0) del_cns_g_nn(cns, w);

                nn++;
            }

            if(nn) {
                aw = &((*cns).a[mn]);
                // fprintf(stderr, "\n[M::%s] nn::%u, mn::%u\n", __func__, nn, mn);
                // fprintf(stderr, "[M::%s] vi::%u, vn::%u\n", __func__, mn_k[0], (uint32_t)av->arc.n);
                // fprintf(stderr, "[M::%s] wi::%u, wn::%u\n", __func__, mn_k[1], (uint32_t)aw->arc.n);

                av->arc.a[mn_k[0]].sc = aw->arc.a[mn_k[1]].sc = wh;
                // merge_cns_g_in(cns_gfa *cns, uint32_t v, asg32_v* b32)
                kv_push(uint32_t, *b32, mn);
            }
        }
    }
}

void refine_cns_g(cns_gfa *cns, asg32_v *b32)
{
    uint32_t v, w, vk, wk, *p = NULL; cns_t *av = NULL, *aw = NULL;
    kdq_clear(cns->q); 
    kdq_push(uint32_t, cns->q, cns->si); ///in-degree == 0

    while (1) {
        p = kdq_shift(uint32_t, cns->q);
        if(!p) {break;} v = *p;

        if(del_cns_nn((*cns), v)) continue;
        ///merge in
        merge_cns_g_in(cns, v, b32);
        ///merge out
        merge_cns_g_ou(cns, v, b32);

        av = &((*cns).a[v]);
        ///set arcs
        for (vk = 0; vk < av->arc.nou; vk++) {///out-edge of v
            if(del_cns_arc((*av), vk)) continue;
            if(av->arc.a[vk].f == 0) continue;

            av->arc.a[vk].f = 1; w = av->arc.a[vk].v; aw = &((*cns).a[w]);

            for (wk = aw->arc.nou; wk < aw->arc.n; wk++) {///in-edge of w
                if((aw->arc.a[wk].v != v) || (del_cns_arc((*aw), wk))) continue;
                aw->arc.a[wk].f = 1; break;
            }
        }
        ///set node
        av->f = 1;


        for (vk = 0; vk < av->arc.nou; vk++) {///out-edge of v
            if(del_cns_arc((*av), vk)) continue;
            w = av->arc.a[vk].v;

            aw = &((*cns).a[w]);
            for (wk = aw->arc.nou; wk < aw->arc.n; wk++) {///in-edge of w
                if((del_cns_arc((*aw), wk))) continue;
                if(aw->arc.a[wk].f) continue;///test arcs
                if(cns->a[aw->arc.a[wk].v].f) continue;///test node
                break;
            }
            if(wk >= aw->arc.n) {
                kdq_push(uint32_t, cns->q, w); ///in-degree == 0
            }
        }
    }
}

void gseq_cns_g(cns_gfa *cns, asg32_v *b32, uint32_t bl)
{
    b32->n = 0; kv_resize(uint32_t, *b32, cns->n);
    uint32_t v, vk, w, mme, mmn, mmk, mmw, *ii = b32->a, *p; cns_t *av;
    uint32_t bs = cns->off, be = bl + cns->off, sw;
    for (v = 0; v < cns->n; v++) {
        ii[v] = 0;///score
        if(del_cns_nn((*cns), v)) continue;
        cns->a[v].sc = 0; ///in-degree or prefix
        cns->a[v].f = 0;

        av = &((*cns).a[v]);
        for (vk = av->arc.nou; vk < av->arc.n; vk++) {///in-edge of v
            if(del_cns_arc((*av), vk)) continue;
            cns->a[v].sc++;///in-degree
        }
    }

    kdq_clear(cns->q); 
    kdq_push(uint32_t, cns->q, cns->si); ///in-degree == 0
    assert((cns->a[cns->si].sc == 0) && (!del_cns_nn((*cns), cns->si)));

    while (1) {
        p = kdq_shift(uint32_t, cns->q);
        if(!p) {break;} v = *p;

        if(del_cns_nn((*cns), v)) continue;
        assert(cns->a[v].sc == 0); ///in-degree == 0

        av = &((*cns).a[v]);
        for (vk = av->arc.nou, mme = mmn = mmw = 0, mmk = (uint32_t)-1; vk < av->arc.n; vk++) {///in-edge of v
            if(del_cns_arc((*av), vk)) continue;
            w = av->arc.a[vk].v;
            assert((*cns).a[w].f);
            sw = ((w >= bs && w < be)?1:0); ///backbone

            if((mmk == ((uint32_t)-1)) || (av->arc.a[vk].sc > mme) || 
                (((av->arc.a[vk].sc == mme) && (ii[w] > mmn))) ||
                (((av->arc.a[vk].sc == mme) && (ii[w] == mmn) && (sw == 1) && (mmw == 0)))) {
                mmk = vk; mme = av->arc.a[vk].sc; mmn = ii[w]; mmw = sw;
            }
        }

        ii[v] = mme + mmn; cns->a[v].f = 1;
        if(mmk != ((uint32_t)-1)) cns->a[v].sc = av->arc.a[mmk].v; 
        else cns->a[v].sc = v;

        for (vk = 0; vk < av->arc.nou; vk++) {///out-edge of v
            if(del_cns_arc((*av), vk)) continue;
            w = av->arc.a[vk].v;
            assert(cns->a[w].f == 0);
            assert(cns->a[w].sc);
            cns->a[w].sc--;
            if(cns->a[w].sc == 0) {
                kdq_push(uint32_t, cns->q, w); ///in-degree == 0
            }
        }

        // fprintf(stderr, "[M::%s] sc[%u]::%u\n", __func__, v, ii[v]);
    }

    for (v = cns->a[cns->ei].sc, b32->n = 0; v != cns->si; v = cns->a[v].sc) {
        // fprintf(stderr, "[M::%s] v::%u\n", __func__, v);
        kv_push(uint32_t, *b32, v);
    }
    assert(v == cns->si);
    
    mmn = b32->n; mmn >>= 1;
    for (vk = 0; vk < mmn; vk++) {
        v = b32->a[vk]; b32->a[vk] = b32->a[b32->n-vk-1]; b32->a[b32->n-vk-1] = v;
    }
}

uint64_t push_correct1(window_list *idx, window_list_alloc *res, cns_gfa *cns, asg32_v *rc, uint32_t bl)
{
    // fprintf(stderr, "[M::%s]\t", __func__);
    uint64_t nec = 0; uint32_t k, l, i, ff, sl, sk, bs = cns->off, be = bl + cns->off, bend = cns->off;///[bs, be)
    if(rc->n) {///it is possible that rc->n == 0, which means there is a deletion
        for (k = 1, l = 0; k <= rc->n; ++k) {
            ff = 0; sl = sk = 0;
            if(k == rc->n) {
                if(l < rc->n) sl = ((rc->a[l] >= bs && rc->a[l] < be)?1:0); 
                ff = 1;
            } else {
                sl = ((rc->a[l] >= bs && rc->a[l] < be)?1:0); 
                sk = ((rc->a[k] >= bs && rc->a[k] < be)?1:0);
                if(sl != sk) {
                    ff = 1;
                } else if((sl == 1) && ((rc->a[k] - rc->a[l]) != (k - l))) {
                    ff = 1;
                }
            }

            if(!ff) continue;

            if(sl) { ///match
                if(rc->a[l] > bend) {///deltetion [bend, rc->a[l])
                    push_trace_bp(((asg16_v *)(&(res->c))), 3, (uint16_t)-1, rc->a[l] - bend, ((idx->clen>0)?1:0)); 
                    idx->clen = res->c.n - idx->cidx; nec += rc->a[l] - bend;
                    // fprintf(stderr, "%uD", rc->a[l] - bend);
                }

                ///push match
                push_trace_bp(((asg16_v *)(&(res->c))), 0, (uint16_t)-1, rc->a[k-1] + 1 - rc->a[l], ((idx->clen>0)?1:0)); 
                idx->clen = res->c.n - idx->cidx;

                // fprintf(stderr, "%uM", rc->a[k-1] + 1 - rc->a[l]);

                bend = rc->a[k-1] + 1;
            } else { ///unmatch
                for (i = l; i < k; i++) {
                    push_trace_bp(((asg16_v *)(&(res->c))), 2, cns->a[rc->a[i]].c, 1, ((idx->clen>0)?1:0)); 
                    idx->clen = res->c.n - idx->cidx; nec++;
                    // fprintf(stderr, "I");
                }
            }
            l = k;
        }
    } 
    
    ///push remaining deletion
    if(be > bend) {
        push_trace_bp(((asg16_v *)(&(res->c))), 3, (uint16_t)-1, be - bend, ((idx->clen>0)?1:0)); 
        idx->clen = res->c.n - idx->cidx; nec += be - bend;
        // fprintf(stderr, "%uD", be - bend);
    }
    // fprintf(stderr, "\n");
    return nec;
}

uint64_t push_correct1_fhc_indel_exz(asg16_v *sc, int64_t sc0, window_list *idx, cns_gfa *cns, char *ostr, UC_Read* tu, bit_extz_t *exz, uint64_t gbeg, uint64_t c0, int64_t cl0, int64_t ok0)
{
    int64_t ck = sc->n, k, ok = 0, nk = 0, cn, cn0, nl, ol, diff, diff0, ml, ml0, e0 = 0; uint32_t on, f = 0, nec = 0; uint16_t bq, bt, op; 
    assert(c0 == 3);

    ///debug
    // char cm[4]; cm[0] = 'M'; cm[1] = 'S'; cm[2] = 'I'; cm[3] = 'D';

    // if(c0 != 2) ok += cl0;
    // if(c0 != 3) nk += cl0;
    ok += cl0; e0 += cl0;

    // fprintf(stderr, "\n%lu%c", cl0, cm[c0]);

    for (ck--; ck >= sc0/**0**/; ck--) {
        op = sc->a[ck]>>14;
        if(!op) break;

        if((op == 2) || (op == 3)) {
            on = sc->a[ck]&(0xfff);
        } else if(op == 1) {
            on = sc->a[ck]&(0x3ff);
        } else {
            on = sc->a[ck]&(0x3fff);
        }
        if(op != 2) ok += on;
        if(op != 3) nk += on;
        if(op != 0) e0 += on;
        if(c0 != op) f = 1;

        // fprintf(stderr, "%u%c(%c)", on, cm[op], "ACGT"[((sc->a[ck]>>12)&3)]);
    }
    cn0 = ck + 1; cn = sc->n;
    // fprintf(stderr, "\n");

    // fprintf(stderr, "+[M::%s] cn0::%ld, cn::%ld, ok::%ld, sc->n::%u, ok0::%ld, cl0::%ld\n", __func__, cn0, cn, ok, (uint32_t)sc->n, ok0, cl0);
    // f = 0;

    if((!f) || (!ok) || (!nk)) {
        for (k = 0, ck = ok0 + gbeg; k < cl0; k++, ck++) {
            push_trace_bp_f(sc, c0, cns->a[ck].c, (uint16_t)-1,  1, ((idx->clen>0)?1:0));
            idx->clen = sc->n - idx->cidx; nec++;
            // fprintf(stderr, "%c\n", "ACGT"[cns->a[ck].c]);
        }
    } else {
        char *oseq = NULL, *nseq = NULL; int64_t wo[2], wn[2];
        UC_Read_resize((*tu), nk); nseq = tu->seq; wo[0] = wo[1] = wn[0] = wn[1] = 0; 
        // if(c0 != 2) ok0 += cl0;
        ok0 += cl0;

        ok0 -= ok; 
        // if(!(ok0 >= 0)) {
        //     fprintf(stderr, "+[M::%s] rid::%u, cn0::%ld, cn::%ld, ok0::%ld, ok::%ld, sc->n::%u\n", __func__, rid, cn0, cn, ok0, ok, (uint32_t)sc->n);
        // }
        assert(ok0 >= 0);
        
        oseq = ostr + ok0;
        ol = ok; nl = nk; 
        ck = cn0; ok = nk = 0;
        while (ck < cn) {
            wo[0] = ok; wn[0] = nk;
            ck = pop_trace_bp_f(sc, ck, &op, &bq, &bt, &on);
            if(op != 2) ok += on;
            if(op != 3) nk += on;
            wo[1] = ok; wn[1] = nk;

            if(op == 0) {
                memcpy(nseq + wn[0], oseq + wo[0], (wo[1]-wo[0])*sizeof((*nseq)));
            } else if(op == 1 || op == 2) {
                for (k = wn[0]; k < wn[1]; k++) nseq[k] = s_H[bt];
            }
            // fprintf(stderr, "[M::%s] ck::%ld, wo::[%ld, %ld), wn::[%ld, %ld)\n", __func__, ck, wo[0], wo[1], wn[0], wn[1]);
        }
        // fprintf(stderr, "[M::%s] qstr::%.*s*\n", __func__, (int32_t)ol, oseq);
        // fprintf(stderr, "[M::%s] tstr::%.*s*\n", __func__, (int32_t)nl, nseq);
        
        assert(wo[1] + cl0 == ol); 
        assert(wn[1] == nl); ///since c0 must be 3
        // memcpy(nseq + wn[1], oseq + wo[1], cl0*sizeof((*nseq)));
        if(nl == ol && nl == 1) {
            sc->n = cn0;
            if(oseq[0] == nseq[0]) {
                push_trace_bp_f(sc, 0, (uint16_t)-1, (uint16_t)-1, 1, ((idx->clen>0)?1:0)); 
                idx->clen = sc->n - idx->cidx; 
            } else {
                push_trace_bp_f(sc, 1, seq_nt6_table[(uint32_t)(oseq[0])], seq_nt6_table[(uint32_t)(nseq[0])], 1, ((idx->clen>0)?1:0)); 
                idx->clen = sc->n - idx->cidx; nec++;
            }
        } else {
            ml = MAX(ol, nl); f = 0;
            
            diff = 31;
            if(diff > ml) diff = ml; 
            diff0 = diff; clear_align(*exz);
            cal_exz_global(nseq, nl, oseq, ol, diff, exz);
            if(is_align(*exz)) f = 1; 

            if(!f) {
                diff = 63;
                if(diff > ml) diff = ml; 
                if(diff > diff0) {
                    diff0 = diff; clear_align(*exz);
                    cal_exz_global(nseq, nl, oseq, ol, diff, exz);
                    if(is_align(*exz)) f = 1; 
                }
            }

            // fprintf(stderr, "[M::%s] f::%u, exz->err::%d, e0::%ld\n", __func__, f, exz->err, e0);

            if(f && exz->err < e0) {
                sc->n = cn0;
                cn = exz->cigar.n; ok = nk = 0;
                for (ck = 0; ck < cn;) {
                    wo[0] = ok; wn[0] = nk;
                    ck = pop_trace(&(exz->cigar), ck, &op, &on);
                    if(op!=2) ok += on;
                    if(op!=3) nk += on; 
                    wo[1] = ok; wn[1] = nk;

                    // fprintf(stderr, "%u%c(", on, cm[op]);

                    if(op == 0) {
                        push_trace_bp_f(sc, op, (uint16_t)-1, (uint16_t)-1, on, ((idx->clen>0)?1:0)); 
                        idx->clen = sc->n - idx->cidx; 
                    } else if(op == 1) {
                        for (k = 0; k < on; k++) {
                            push_trace_bp_f(sc, op, seq_nt6_table[(uint32_t)(oseq[wo[0]+k])], seq_nt6_table[(uint32_t)(nseq[wn[0]+k])], 1, ((idx->clen>0)?1:0)); 
                            idx->clen = sc->n - idx->cidx; nec++;
                            // fprintf(stderr, "<%c|%c>)", oseq[wo[0]+k], nseq[wn[0]+k]);
                        }
                    } else if(op == 2) {
                        for (k = 0; k < on; k++) {
                            push_trace_bp_f(sc, op, (uint16_t)-1, seq_nt6_table[(uint32_t)(nseq[wn[0]+k])], 1, ((idx->clen>0)?1:0)); 
                            idx->clen = sc->n - idx->cidx; nec++;
                            // fprintf(stderr, "<|%c>)", nseq[wn[0]+k]);
                        }
                    } else if(op == 3) {
                        for (k = 0; k < on; k++) {
                            push_trace_bp_f(sc, op, seq_nt6_table[(uint32_t)(oseq[wo[0]+k])], (uint16_t)-1, 1, ((idx->clen>0)?1:0)); 
                            idx->clen = sc->n - idx->cidx; nec++;
                            // fprintf(stderr, "<%c|>)", oseq[wo[0]+k]);
                        }
                    }
                    // fprintf(stderr, ")");
                }
                // fprintf(stderr, "\n");
            } else {
                if(ml < e0) {
                    sc->n = cn0;
                    ml0 = MIN(ol, nl); op = 1;
                    for (k = 0; k < ml0; k++) {
                        push_trace_bp_f(sc, op, seq_nt6_table[(uint32_t)(oseq[k])], seq_nt6_table[(uint32_t)(nseq[k])], 1, ((idx->clen>0)?1:0)); 
                        idx->clen = sc->n - idx->cidx; nec++;
                    }
                    
                    if(ol > ml0) {///op = 3
                        for (k = ml0, op = 3; k < ol; k++) {
                            push_trace_bp_f(sc, op, seq_nt6_table[(uint32_t)(oseq[k])], (uint16_t)-1, 1, ((idx->clen>0)?1:0)); 
                            idx->clen = sc->n - idx->cidx; nec++;
                        }
                    } else if(nl > ml0) {///op = 2
                        for (k = ml0, op = 2; k < nl; k++) {
                            push_trace_bp_f(sc, op, (uint16_t)-1, seq_nt6_table[(uint32_t)(nseq[k])], 1, ((idx->clen>0)?1:0)); 
                            idx->clen = sc->n - idx->cidx; nec++;
                        }
                    }
                } else {
                    for (k = 0, ck = ok0 + gbeg; k < cl0; k++, ck++) {
                        push_trace_bp_f(sc, c0, cns->a[ck].c, (uint16_t)-1,  1, ((idx->clen>0)?1:0));
                        idx->clen = sc->n - idx->cidx; nec++;
                    }
                }
            }
        }
    }

    // fprintf(stderr, "-[M::%s] cn0::%ld, cn::%ld, ok::%ld, sc->n::%u\n", __func__, cn0, cn, ok, (uint32_t)sc->n);
    return nec;
}

uint64_t push_correct1_fhc(window_list *idx, window_list_alloc *res, cns_gfa *cns, char* qstr, UC_Read* tu, bit_extz_t *exz, asg32_v *rc, uint32_t bl, uint32_t rid)
{
    // fprintf(stderr, "[M::%s]\trc->n::%u\tbl::%u\n", __func__, (uint32_t)rc->n, bl);
    uint64_t nec = 0; uint32_t k, l, i, ff, sl, sk, bs = cns->off, be = bl + cns->off, bend = cns->off, is_i = 0, sc0 = res->c.n;///[bs, be)
    if(rc->n) {///it is possible that rc->n == 0, which means there is a deletion
        for (k = 1, l = 0; k <= rc->n; ++k) {
            ff = 0; sl = sk = 0;
            if(k == rc->n) {
                if(l < rc->n) sl = ((rc->a[l] >= bs && rc->a[l] < be)?1:0); 
                ff = 1;
            } else {
                sl = ((rc->a[l] >= bs && rc->a[l] < be)?1:0); 
                sk = ((rc->a[k] >= bs && rc->a[k] < be)?1:0);
                if(sl != sk) {
                    ff = 1;
                } else if((sl == 1) && ((rc->a[k] - rc->a[l]) != (k - l))) {
                    ff = 1;
                }
            }

            if(!ff) continue;

            if(sl) { ///match
                if(rc->a[l] > bend) {///deltetion [bend, rc->a[l])
                    if(is_i && exz) {
                        nec += push_correct1_fhc_indel_exz(((asg16_v *)(&(res->c))), sc0, idx, cns, qstr, tu, exz, cns->off, 3, rc->a[l] - bend, bend-cns->off);
                    } else {
                        for (i = bend; i < rc->a[l]; i++) {
                            push_trace_bp_f(((asg16_v *)(&(res->c))), 3, cns->a[i].c, (uint16_t)-1,  1, ((idx->clen>0)?1:0));
                            idx->clen = res->c.n - idx->cidx; nec++;
                        }
                    }
                }

                ///push match
                push_trace_bp_f(((asg16_v *)(&(res->c))), 0, (uint16_t)-1, (uint16_t)-1, rc->a[k-1] + 1 - rc->a[l], ((idx->clen>0)?1:0)); 
                idx->clen = res->c.n - idx->cidx;

                bend = rc->a[k-1] + 1; is_i = 0;
            } else { ///unmatch
                for (i = l; i < k; i++) {
                    push_trace_bp_f(((asg16_v *)(&(res->c))), 2, (uint16_t)-1, cns->a[rc->a[i]].c, 1, ((idx->clen>0)?1:0)); 
                    idx->clen = res->c.n - idx->cidx; nec++;
                }
                is_i = 1;
            }
            l = k;
        }
    } 
    
    ///push remaining deletion
    if(be > bend) {
        if(is_i && exz) {
            nec += push_correct1_fhc_indel_exz(((asg16_v *)(&(res->c))), sc0, idx, cns, qstr, tu, exz, cns->off, 3, be - bend, bend-cns->off);
        } else {
            for (i = bend; i < be; i++) {
                push_trace_bp_f(((asg16_v *)(&(res->c))), 3, cns->a[i].c, (uint16_t)-1, 1, ((idx->clen>0)?1:0));
                idx->clen = res->c.n - idx->cidx; nec++;
            }
        }
    }
    // fprintf(stderr, "\n");
    return nec;
}

///no e_end since e always covers end; s may not have end
uint64_t cns_gen_full0(overlap_region* ol, All_reads *rref, uint64_t s, uint64_t e, uint64_t s_end, char* qstr, UC_Read* tu, bit_extz_t *exz, cc_idx_t *idx, uint64_t occ_tot, double occ_max, asg32_v* b32, cns_gfa *cns, uint64_t max_trace, window_list *ridx, window_list_alloc *res, uint64_t o_rate, uint64_t h_rate, uint64_t q_hf, uint32_t rid)
{
    // if(e -s > 100) {
        // fprintf(stderr, "[M::%s]::[%lu, %lu), cns->n::%u, qstr::%.*s\n", __func__, s, e, (uint32_t)cns->n, (int)(e-s), qstr+s);
    // }
    // fprintf(stderr, "[M::%s]::[%lu, %lu)\n", __func__, s, e);
    
    uint64_t *id_a = NULL, id_n, nec = 0, hf_f = ((o_rate == ((uint64_t)-1) || h_rate == ((uint64_t)-1))?(0):(1)), hw; b32->n = 0;
    rr_seq_t ssq; ssq.rref = rref; ssq.tu = tu; ssq.s = ssq.e = 0; ssq.n0 = ssq.n1 = 32; ssq.id = ssq.rev = 0;
    if(!hf_f) {
        hw = 1;
    } else {
        if(q_hf) hw = h_rate;
        else hw = o_rate;
    }
    init_cns_g(cns, qstr + s, e - s, hw, rid);

    id_n = iter_cc_idx_t(ol, idx, s, e, idx->rr, ((s==e)?1:0), &id_a);
    // debug_inter0(ol, idx->c_idx, idx->idx->a + idx->i0, idx->srt_n - idx->i0, id_a, id_n, s, e, ((s==e)?1:0), 0, "-1-");
    uint64_t k, q[2], os, oe; ul_ov_t *p; overlap_region *z; idx->rr = 0;
    // fprintf(stderr, "[M::%s] [%lu, %lu) id_n::%lu\n", __func__, s, e, id_n);
    for (k = 0; k < id_n; k++) {
        p = &(idx->c_idx[id_a[k]]); z = &(ol[ovlp_id(*p)]); 
        q[0] = z->w_list.a[ovlp_cur_wid(*p)].x_start+ovlp_bd(*p);
        q[1] = z->w_list.a[ovlp_cur_wid(*p)].x_end+1-ovlp_bd(*p);

        // fprintf(stderr, "[M::%s] tid::%u\t%.*s\twid::%u\tq::[%u, %u)\terr::%d\toerr::%u\n", __func__, ol[ovlp_id(*p)].y_id, (int)Get_NAME_LENGTH(R_INF, ol[ovlp_id(*p)].y_id), Get_NAME(R_INF, ol[ovlp_id(*p)].y_id),
        // ovlp_cur_wid(*p), ol[ovlp_id(*p)].w_list.a[ovlp_cur_wid(*p)].x_start, ol[ovlp_id(*p)].w_list.a[ovlp_cur_wid(*p)].x_end+1, ol[ovlp_id(*p)].w_list.a[ovlp_cur_wid(*p)].error, ol[ovlp_id(*p)].non_homopolymer_errors);

        if(q[1] <= e) idx->rr = 1;
        os = MAX(q[0], s); oe = MIN(q[1], e);
        // if((oe > os) || ((s == e) && (s >= q[0]) && (s <= q[1]))) {
        if((oe > os) || ((s == e) && (s > q[0]) && (s < q[1]))) {
        // if(oe >= os) {
            ///[-4-][-12-][-4-][-12-]
            ///[cigar_len][cigar][base_len][base]
            if(!hf_f) {
                hw = 1;
            } else {
                if(ovlp_hf((*p))) hw = h_rate;
                else hw = o_rate;
            }
            extract_sub_cigar_cns(z, os, oe, s, e, s_end, &ssq, p, cns, b32, max_trace, hw, rid); 
            // if(m != ((uint32_t)-1)) {///no gap in both sides
            //     kv_push(uint32_t, *b32, m);
            // }
        }
    }

    // fprintf(stderr, "-2-[M::%s] cns->n::%u\n", __func__, (uint32_t)cns->n);

    // return;

    refine_cns_g(cns, b32);

    // fprintf(stderr, "-3-[M::%s] cns->n::%u\n", __func__, (uint32_t)cns->n);

    gseq_cns_g(cns, b32, e - s);

    // fprintf(stderr, "-4-[M::%s] cns->n::%u\n", __func__, (uint32_t)cns->n);

    // nec += push_correct1(ridx, res, cns, b32, e - s);
    nec += push_correct1_fhc(ridx, res, cns, qstr + s, tu, exz, b32, e - s, rid);

    // fprintf(stderr, "-5-[M::%s] cns->n::%u\n", __func__, (uint32_t)cns->n);
    return nec;
}

uint64_t cns_gen_full(overlap_region* ol, All_reads *rref, uint64_t s0, uint64_t e0, uint64_t wl, char* qstr, UC_Read* tu, bit_extz_t *exz, cc_idx_t *idx, uint64_t occ_tot, double occ_max, asg32_v* b32, cns_gfa *cns, uint64_t max_trace, window_list *ridx, window_list_alloc *res, uint64_t o_rate, uint64_t h_rate, uint64_t q_hf, uint32_t rid)
{
    uint64_t nec = 0;
    if(e0 - s0 <= wl) {
        nec += cns_gen_full0(ol, rref, s0, e0, 1, qstr, tu, exz, idx, occ_tot, occ_max, b32, cns, max_trace, ridx, res, o_rate, h_rate, q_hf, rid);
    } else {
        uint64_t s, e;
        s = s0; e = s0 + wl; e = ((e<=e0)?e:e0);
        for (; s < e0; ) {
            // rn = iter_cc_idx_t(ol->list, &ii_a, s, e, rr, 0, &ra);
            // debug_inter0(ol->list, ii_a.c_idx, ii_a.idx->a + ii_a.i0, ii_a.srt_n - ii_a.i0, ra, rn, s, e, 0, 1, "-0-");
            // rr = wcns_vote(ol->list, rref, qu->seq, ql, tu, ra, rn, s, e, ii_a.c_idx, &ii_b, occ_tot, occ_exact, aux_o, b32, cns, rid);
            nec += cns_gen_full0(ol, rref, s, e, (s==s0)?1:0, qstr, tu, exz, idx, occ_tot, occ_max, b32, cns, max_trace, ridx, res, o_rate, h_rate, q_hf, rid);
            s += wl; e += wl; e = ((e<=e0)?e:e0);
        }
    }
    return nec;
}

uint64_t push_correct0(window_list *idx, window_list_alloc *res, uint32_t len0, uint32_t rc)
{
    uint64_t nec = 0;
    // fprintf(stderr, "[M::%s] NULL(idx)::%u\n", __func__, idx?0:1);
    if(len0 != ((uint32_t)-1)) {
        push_trace_bp(((asg16_v *)(&(res->c))), 0, (uint16_t)-1, len0, ((idx->clen>0)?1:0)); 
        idx->clen = res->c.n - idx->cidx;
    } else if(rc != ((uint32_t)-1)) {
        // fprintf(stderr, "[M::%s]\t", __func__);
        uint32_t cc = (rc<<4)>>20, cn = rc>>28, ck = 0, cs, cp;
        uint32_t bc = (rc<<20)>>20, bn = (rc<<16)>>28, bk = 0, bs, bp;
        ///debug
        // prt_cigar0(cc, cn);
        // prt_bp0(bc, bn);

        for (ck = 0; ck < cn; ck++) {
            cs = (cn-1-ck)<<1; cp = (cc>>cs)&3;

            bp = (uint32_t)-1;
            if(cp != 3) {///bp == 3: more x
                bs = (bn-1-bk)<<1; bp = (bc>>bs)&3; 
                bk++;
            }
            // fprintf(stderr, "[M::%s] cp::%u, bp::%u\n", __func__, cp, bp);

            push_trace_bp(((asg16_v *)(&(res->c))), cp, bp, 1, ((idx->clen>0)?1:0)); 
            idx->clen = res->c.n - idx->cidx;
            // fprintf(stderr, "%c", cm[(in >> mp)&3]);

            // fprintf(stderr, "%c", "MSID"[cp]);
            if(cp != 0) nec++;
        }

        // fprintf(stderr, "\n");
    }

    return nec;
}

uint64_t push_correct0_fhc(window_list *idx, window_list_alloc *res, uint32_t len0, uint32_t rc, char *qstr)
{
    uint64_t nec = 0;
    // fprintf(stderr, "[M::%s] NULL(idx)::%u\n", __func__, idx?0:1);
    if(len0 != ((uint32_t)-1)) {
        push_trace_bp_f(((asg16_v *)(&(res->c))), 0, (uint16_t)-1, (uint16_t)-1, len0, ((idx->clen>0)?1:0)); 
        idx->clen = res->c.n - idx->cidx;
    } else if(rc != ((uint32_t)-1)) {
        // fprintf(stderr, "[M::%s]\t", __func__);
        uint32_t cc = (rc<<4)>>20, cn = rc>>28, ck = 0, cs, cp;
        uint32_t bc = (rc<<20)>>20, bn = (rc<<16)>>28, btk = 0, bqk = 0, bs, bqp, btp;
        ///debug
        // prt_cigar0(cc, cn);
        // prt_bp0(bc, bn);

        for (ck = 0; ck < cn; ck++) {
            cs = (cn-1-ck)<<1; cp = (cc>>cs)&3;

            bqp = btp = (uint32_t)-1;
            if(cp != 3) {///bp == 3: more x
                bs = (bn-1-btk)<<1; btp = (bc>>bs)&3; btk++;
            }
            if(cp != 2) {///bp == 2: more y
                bqp = seq_nt6_table[(uint32_t)qstr[bqk]]; bqk++;
            }
            // fprintf(stderr, "[M::%s] cp::%u, btp::%u, bqp::%u\n", __func__, cp, btp, bqp);

            push_trace_bp_f(((asg16_v *)(&(res->c))), cp, bqp, btp, 1, ((idx->clen>0)?1:0)); 
            idx->clen = res->c.n - idx->cidx;
            // fprintf(stderr, "%c", cm[(in >> mp)&3]);

            // fprintf(stderr, "%c", "MSID"[cp]);
            if(cp != 0) nec++;
        }

        // fprintf(stderr, "\n");
    }

    return nec;
}

void output_cns_g(cns_gfa *cns, uint64_t s, uint64_t e)
{
    // char *gfa_id = NULL, p; MALLOC(gfa_id, Get_NAME_LENGTH(R_INF, qid) + 128); 
    // sprintf(gfa_id, "%.*s.%lu_%lu.cns.gfa", (int)Get_NAME_LENGTH(R_INF, qid), Get_NAME(R_INF, qid), s, e);
    char *gfa_id = NULL, p, f; MALLOC(gfa_id, 128); 
    sprintf(gfa_id, "ec.%lu_%lu.cns.gfa", s, e);

    FILE *fp = fopen(gfa_id, "w"); uint64_t k, z; char cm[4]; cm[0] = 'A'; cm[1] = 'C'; cm[2] = 'G'; cm[3] = 'T';  

    sprintf(gfa_id, "s_0_%c", cm[cns->a[0].c]);
    fprintf(fp, "S\t%s\t*\tLN:i:%u\trd:i:%c\n", gfa_id, 0/**cns->a[0].sc**/, cm[cns->a[0].c]);

    sprintf(gfa_id, "e_1_%c", cm[cns->a[1].c]);
    fprintf(fp, "S\t%s\t*\tLN:i:%u\trd:i:%c\n", gfa_id, 0/**cns->a[1].sc**/, cm[cns->a[1].c]);

    for (k = 2; k < cns->n; k++) {
        if(del_cns_nn((*cns), k)) continue;
        sprintf(gfa_id, "%c_%lu_%c", ((k<cns->bn)?'b':'n'), k, cm[cns->a[k].c]);
        fprintf(fp, "S\t%s\t*\tLN:i:%d\trd:i:%c\n", gfa_id, 0/**cns->a[k].sc**/, cm[cns->a[k].c]);
    }
    
    for (k = 0; k < cns->n; k++) {
        if(del_cns_nn((*cns), k)) continue;

        if(k == 0) {
            p = 's';
        } else if(k == 1) {
            p = 'e';
        } else if (k<cns->bn) {
            p = 'b';
        } else {
            p = 'n';
        }
        
        sprintf(gfa_id, "%c_%lu_%c", p, k, cm[cns->a[k].c]);
        for (z = 0; z < cns->a[k].arc.n; z++) {
            if(del_cns_arc((cns->a[k]), z)) continue;

            if(cns->a[k].arc.a[z].v == 0) {
                p = 's';
            } else if(cns->a[k].arc.a[z].v == 1) {
                p = 'e';
            } else if (cns->a[k].arc.a[z].v < cns->bn) {
                p = 'b';
            } else {
                p = 'n';
            }

            f = ((z < cns->a[k].arc.nou)?('+'):('-'));
            fprintf(fp, "L\t%s\t%c\t%c_%u_%c\t%c\t0M\tL1:i:%u\n", 
                    gfa_id, f, 
                    p, cns->a[k].arc.a[z].v, cm[cns->a[cns->a[k].arc.a[z].v].c], f, 
                    cns->a[k].arc.a[z].sc);
        }
    }

    fclose(fp); free(gfa_id);
}

uint32_t cal_cigar_xlen(overlap_region *in)
{
    assert(in->w_list.n == 1);
    uint32_t cn = in->w_list.a[0].clen; uint16_t *a = in->w_list.c.a + in->w_list.a[0].cidx;
    uint32_t ci, len, xk, yk; uint16_t c, b; asg16_v scc; scc.n = scc.m = cn; scc.a = a;

    ci = 0; xk = yk = 0;
    while (ci < cn) {
        ci = pop_trace_bp(&scc, ci, &c, &b, &len);
        if(c != 2) xk += len;
        if(c != 3) yk += len;
    }

    return xk;
}

uint32_t cal_cigar_xlen_fhc(overlap_region *in)
{
    assert(in->w_list.n == 1);
    uint32_t cn = in->w_list.a[0].clen; uint16_t *a = in->w_list.c.a + in->w_list.a[0].cidx;
    uint32_t ci, len, xk, yk; uint16_t c, bq, bt; asg16_v scc; scc.n = scc.m = cn; scc.a = a;

    ci = 0; xk = yk = 0;
    while (ci < cn) {
        ci = pop_trace_bp_f(&scc, ci, &c, &bq, &bt, &len);
        if(c != 2) xk += len;
        if(c != 3) yk += len;
    }

    return xk;
}

uint64_t push_cns_anchor(overlap_region* ol, All_reads *rref, uint64_t s, uint64_t e, uint64_t q_hf, char* qstr, uint64_t ql, UC_Read* tu, bit_extz_t *exz, cc_idx_t *idx, overlap_region *aux_o, uint64_t is_tail, uint64_t occ_tot, double occ_max, asg32_v* b32, cns_gfa *cns, uint32_t rid, uint64_t o_rate, uint64_t h_rate)
{
    if((!is_tail) && (s >= e)) return 0;//if s >= e && is_tail = 1, gen the cns of the last a few bases -> s == e == ql
    // fprintf(stderr, "\n****************[M::%s::M] [%lu, %lu)****************\n", __func__, s, e);
    window_list *p = NULL; uint64_t e0 = 0, nec = 0; uint32_t rc;
    if(aux_o->w_list.n > 0) {
        p = &(aux_o->w_list.a[aux_o->w_list.n-1]);
        e0 = p->x_end+1;
        ///make sure e > s
    }
    assert(s >= e0);
    if((s == e) && (is_tail == 1) && (s == e0)) return 0;///in this case, s == e == ql

    if(aux_o->w_list.n == 0) {
        kv_pushp(window_list, aux_o->w_list, &p);
        p->x_start = -1; p->x_end = -1;
        p->clen = p->cidx = 0;
    }

    if(((!is_tail) && (s > 0)) || ((is_tail) && (s > e0))) {
        // fprintf(stderr, ">>>>>>[M::%s::M] [%lu, %lu), ec::%u\n", __func__, e0, s, cal_cigar_xlen_fhc(aux_o));
        // fprintf(stderr, ">>>>>>[M::%s::M] [%lu, %lu)\n", __func__, e0, s);
        if (cns_gen0(ol, rref, e0, s, ql, tu, idx, occ_tot, occ_max, b32, o_rate, h_rate, q_hf, &rc)) {
            if(p->x_start == -1 || p->x_end == -1) {///hasn't neem set
                p->x_start = e0; p->x_end = s-1;
            }
            // nec += push_correct0(p, &(aux_o->w_list), (uint32_t)-1, rc);
            nec += push_correct0_fhc(p, &(aux_o->w_list), (uint32_t)-1, rc, qstr + e0);
            // fprintf(stderr, "-0-[M::%s::M]\n", __func__);
        } else {
            nec += cns_gen_full(ol, rref, e0, s, cns->cns_g_wl, qstr, tu, exz, idx, occ_tot, occ_max, b32, cns, ql, p, &(aux_o->w_list), o_rate, h_rate, q_hf, rid);
            // output_cns_g(cns, e0, s); exit(1);
            // fprintf(stderr, "-1-[M::%s::M]\n", __func__);
        }
        p->x_end = s-1;

        // if((uint32_t)p->x_end + 1 != cal_cigar_xlen_fhc(aux_o)) {
        //     fprintf(stderr, "sb1::%u\n", cal_cigar_xlen_fhc(aux_o));
        // }
    }

    
    // fprintf(stderr, "------[M::%s::M] [%lu, %lu), ec::%u\n", __func__, s, e, cal_cigar_xlen_fhc(aux_o));
    // fprintf(stderr, "------[M::%s::M] [%lu, %lu)\n", __func__, s, e);
    if(p->x_start == -1 || p->x_end == -1) {///hasn't neem set
        p->x_start = s; p->x_end = e-1;
    }
    // nec += push_correct0(p, &(aux_o->w_list), e-s, (uint32_t)-1);    
    nec += push_correct0_fhc(p, &(aux_o->w_list), e-s, (uint32_t)-1, NULL);    
    p->x_end = e-1;
    // if((uint32_t)p->x_end + 1 != cal_cigar_xlen_fhc(aux_o)) {
    //     fprintf(stderr, "ta2::%u\n", cal_cigar_xlen_fhc(aux_o));
    // }
    return nec;
}

void prt_correct0_dbg(overlap_region *in)
{
    int64_t wn = in->w_list.n, k; uint32_t ci, len; asg16_v ff; uint16_t c, b; 
    char cm[4], cc[4]; 
    cm[0] = 'M'; cm[1] = 'S'; cm[2] = 'I'; cm[3] = 'D';
    cc[0] = 'A'; cc[1] = 'C'; cc[2] = 'G'; cc[3] = 'T';

    for (k = 0; k < wn; k++) {
        fprintf(stderr, "\n[M::%s] w[%ld] [%d, %d) clen::%u\n", __func__, k, in->w_list.a[k].x_start, in->w_list.a[k].x_end + 1, in->w_list.a[k].clen);

        ci = 0; ff.n = ff.m = in->w_list.a[k].clen; ff.a = in->w_list.c.a + in->w_list.a[k].cidx;
        while (ci < ff.n) {
            ci = pop_trace_bp(&ff, ci, &c, &b, &len);
            fprintf(stderr, "|%u%c(%c)", len, cm[c], ((c==1)||(c==2))?(cc[b]):('*')); 
        }

        fprintf(stderr, "|\n");
    }
}

uint64_t wcns_vote(overlap_region* ol, All_reads *rref, uint64_t q_hf, char* qstr, uint64_t ql, UC_Read* tu, bit_extz_t *exz, uint64_t *id_a, uint64_t id_n, uint64_t s, uint64_t e, ul_ov_t *c_idx, cc_idx_t *occ, uint64_t occ_tot, double occ_exact, overlap_region *aux_o, asg32_v* b32, cns_gfa *cns, uint32_t rid, uint64_t *nec, uint64_t o_rate, uint64_t h_rate, asg64_v *hf_idx)
{
    uint64_t k, q[2], rr = 0, os, oe, wl, oc[2], fI, ow[2]; ul_ov_t *p, *gp; overlap_region *z; 
    // uint64_t *ct = occ->idx->a;///occ->idx->a[0, wl<<1)
    for (k = 0; k < id_n; k++) {
        p = &(c_idx[id_a[k]]); z = &(ol[ovlp_id(*p)]); 
        q[0] = z->w_list.a[ovlp_cur_wid(*p)].x_start+ovlp_bd(*p);
        q[1] = z->w_list.a[ovlp_cur_wid(*p)].x_end+1-ovlp_bd(*p);
        if(q[1] <= e) rr = 1;
        os = MAX(q[0], s); oe = MIN(q[1], e);
        if(oe > os) {
            ///prepare for CNS
            gp = &(occ->c_idx[id_a[k]]);
            ovlp_cur_xoff(*gp) = ovlp_cur_xoff(*p); ovlp_cur_yoff(*gp) = ovlp_cur_yoff(*p); ovlp_cur_coff(*gp) = ovlp_cur_coff(*p); ovlp_cur_ylen(*gp) = ovlp_cur_ylen(*p); ovlp_hf(*gp) = ovlp_hf(*p);
            // assert(ovlp_cur_wid(*p) == ovlp_cur_wid(*gp));
            // assert(ovlp_id(*p) == ovlp_id(*gp));
            // fprintf(stderr, "[M::%s] tid::%u\t%.*s\twid::%u\tq::[%u, %u)\tos::%lu\toe::%lu\n", __func__, ol[ovlp_id(*p)].y_id, (int)Get_NAME_LENGTH(R_INF, ol[ovlp_id(*p)].y_id), Get_NAME(R_INF, ol[ovlp_id(*p)].y_id),
            // ovlp_cur_wid(*p), ol[ovlp_id(*p)].w_list.a[ovlp_cur_wid(*p)].x_start, ol[ovlp_id(*p)].w_list.a[ovlp_cur_wid(*p)].x_end+1, os, oe);
            extract_sub_cigar_mm(z, os, oe, p, occ->idx->a + os - s, (((hf_idx) && (ovlp_hf(*p)))?(hf_idx->a + os - s):(NULL)));
        }
    }

    wl = e - s;
    os = occ->mms; oe = occ->mme;

    // fprintf(stderr, "[M::%s] s::%lu\te::%lu\n", __func__, s, e);
    
    for (k = 0; k < wl; k++) {
        //+1 for the reference read
        oc[0] = (occ->idx->a[(k<<1)]>>32) + 1;
        oc[1] = ((uint32_t)occ->idx->a[(k<<1)]) + 1;
        ow[0] = ow[1] = 0;
        if(hf_idx) {
            ow[0] = cal_occ_w((hf_idx->a[(k<<1)]>>32) + q_hf, oc[0], h_rate, o_rate);
            ow[1] = cal_occ_w(((uint32_t)hf_idx->a[(k<<1)]) + q_hf, oc[1], h_rate, o_rate);
        }
        // fprintf(stderr, "-0-p::%lu\toc[0]::%lu\toc[1]::%lu\tgoc[0]::%lu\tgoc[1]::%u\n", s + k, oc[0], oc[1], (ct[(k<<1)+1]>>32) + 1, ((uint32_t)ct[(k<<1)+1]) + 1);
        // if(oc[1] < occ_tot || oc[0] <= 1) {
        //     ct[(k<<1)] = ct[(k<<1)+1] = 0;
        //     continue;
        // }
        // fprintf(stderr, "-1-p::%lu\toc[0]::%lu\toc[1]::%lu\n", s + k, oc[0], oc[1]);

        ///a) pass coverage check; b) no enough coverage
        ///occ_exact = 0.500001; occ_tot = 3;
        if(((oc[0] > (oc[1]*occ_exact)) && (oc[0] > (oc[1]-oc[0])) && (oc[1] >= occ_tot) && (oc[0] > 1) && ((!hf_idx) || ((ow[0] > (ow[1]*occ_exact)) && (ow[0] > (ow[1] - ow[0]))))) || (oc[1] < occ_tot)) {
            ///note: there might be insertions at q[k-1, k], insead if q[k, k+1]
            fI = 1;
            ///make sure there is no insertion
            //+1 for the reference read
            oc[0] = (occ->idx->a[(k<<1)+1]>>32) + 1;
            oc[1] = ((uint32_t)occ->idx->a[(k<<1)+1]) + 1;
            if(hf_idx) {
                ow[0] = cal_occ_w((hf_idx->a[(k<<1)+1]>>32) + q_hf, oc[0], h_rate, o_rate);
                ow[1] = cal_occ_w(((uint32_t)hf_idx->a[(k<<1)+1]) + q_hf, oc[1], h_rate, o_rate);
            }
            ///a) pass coverage check; b) no enough coverage
            if((((oc[0] > (oc[1]*occ_exact)) && (oc[0] > (oc[1]-oc[0])) && (oc[1] >= occ_tot) && (oc[0] > 1) && ((!hf_idx) || ((ow[0] > (ow[1]*occ_exact)) && (ow[0] > (ow[1] - ow[0])))))) || (oc[1] < occ_tot)) {
                fI = 0;
            }

            if(fI) {
                // fprintf(stderr, "-1-p::%lu\toc[0]::%lu\toc[1]::%u\tgoc[0]::%lu\tgoc[1]::%u\n", s + k, (occ->idx->a[(k<<1)]>>32) + 1, ((uint32_t)occ->idx->a[(k<<1)]) + 1, (occ->idx->a[(k<<1)+1]>>32) + 1, ((uint32_t)occ->idx->a[(k<<1)+1]) + 1);
                if(oe > os && os != ((uint64_t)-1)) {///push previous intervals
                    (*nec) += push_cns_anchor(ol, rref, os, oe, q_hf, qstr, ql, tu, exz, occ, aux_o, 0, occ_tot, occ_exact, b32, cns, rid, o_rate, h_rate);
                }
                os = oe = (uint64_t)-1;
            }

            //+1 for the reference read
            oc[0] = (occ->idx->a[(k<<1)]>>32) + 1;
            oc[1] = ((uint32_t)occ->idx->a[(k<<1)]) + 1;
            if((s+k) == oe) {
                oe++;
            } else {
                if(oe > os && os != ((uint64_t)-1)) {///push previous intervals
                    (*nec) += push_cns_anchor(ol, rref, os, oe, q_hf, qstr, ql, tu, exz, occ, aux_o, 0, occ_tot, occ_exact, b32, cns, rid, o_rate, h_rate);
                }
                os = s+k; oe = s+k+1;
            }
        } else {
            // fprintf(stderr, "-2-p::%lu\toc[0]::%lu\toc[1]::%u\tgoc[0]::%lu\tgoc[1]::%u\n", s + k, (occ->idx->a[(k<<1)]>>32) + 1, ((uint32_t)occ->idx->a[(k<<1)]) + 1, (occ->idx->a[(k<<1)+1]>>32) + 1, ((uint32_t)occ->idx->a[(k<<1)+1]) + 1);
            if(oe > os && os != ((uint64_t)-1)) {///push previous intervals
                (*nec) += push_cns_anchor(ol, rref, os, oe, q_hf, qstr, ql, tu, exz, occ, aux_o, 0, occ_tot, occ_exact, b32, cns, rid, o_rate, h_rate);
            }
            os = oe = (uint64_t)-1;
        }
        occ->idx->a[(k<<1)] = occ->idx->a[(k<<1)+1] = 0;
        if(hf_idx) {
            hf_idx->a[(k<<1)] = hf_idx->a[(k<<1)+1] = 0;
        }
    }

    occ->mms = occ->mme = (uint64_t)-1;
    if(oe > os && os != ((uint64_t)-1)) {
        occ->mms = os; occ->mme = oe;
    }
    return rr;
}



void print_debug_ovlp_cigar(overlap_region_alloc* ol, asg64_v* idx, kv_ul_ov_t *c_idx)
{
    uint64_t k, ci; uint32_t cl; ul_ov_t *cp; bit_extz_t ez; uint16_t c; char cm[4]; 
    cm[0] = 'M'; cm[1] = 'S'; cm[2] = 'I'; cm[3] = 'D';  
    for (k = 0; k < idx->n; k++) {
        cp = &(c_idx->a[(uint32_t)idx->a[k]]);
        fprintf(stderr, "**********[M::%s] tid::%u\t%.*s\twid::%u\tq::[%u, %u)\terr::%d\toerr::%u**********\n", __func__, ol->list[ovlp_id(*cp)].y_id, (int)Get_NAME_LENGTH(R_INF, ol->list[ovlp_id(*cp)].y_id), Get_NAME(R_INF, ol->list[ovlp_id(*cp)].y_id),
        ovlp_cur_wid(*cp), ol->list[ovlp_id(*cp)].w_list.a[ovlp_cur_wid(*cp)].x_start, ol->list[ovlp_id(*cp)].w_list.a[ovlp_cur_wid(*cp)].x_end+1, ol->list[ovlp_id(*cp)].w_list.a[ovlp_cur_wid(*cp)].error, ol->list[ovlp_id(*cp)].non_homopolymer_errors);
        set_bit_extz_t(ez, ol->list[ovlp_id(*cp)], ovlp_cur_wid(*cp)); ci = 0;
        while (ci < ez.cigar.n) {
            ci = pop_trace(&(ez.cigar), ci, &c, &cl);
            fprintf(stderr, "%u%c", cl, cm[c]);
        }
        fprintf(stderr, "\n");
    }    
}

uint64_t wcns_gen(overlap_region_alloc* ol, All_reads *rref, uint64_t qid, UC_Read* qu, UC_Read* tu, bit_extz_t *exz, kv_ul_ov_t *c_idx, asg64_v* idx, asg64_v* buf, int64_t bd, uint64_t wl, int64_t ql, uint64_t occ_tot, double occ_exact, overlap_region *aux_o, asg32_v* b32, cns_gfa *cns, uint64_t cns_g_wl, uint32_t rid, uint64_t tcut, 
    uint64_t tot_ont_b, uint64_t tot_hf_b, uint64_t ont_rate_w, uint64_t hf_rate_w, uint64_t hf_rate_w_max, asg64_v *hf_idx)
{
    int64_t on = ol->length, k, i, zwn, q[2]; cns->cns_g_wl = cns_g_wl;
    uint64_t m, *ra, rn, nec = 0, n_id, l_nid, p[2], li; uint64_t o_rate = ((uint64_t)-1), h_rate = ((uint64_t)-1); overlap_region *z; ul_ov_t *cp; 
    bit_extz_t ez; uint64_t ci; uint32_t cl; uint16_t c, hf;
    if(hf_idx) {
        o_rate = ont_rate_w;
        h_rate = ceil(((double)tot_ont_b)/((double)tot_hf_b))*hf_rate_w; h_rate = MAX(h_rate, hf_rate_w_max);
        if(o_rate == 0) h_rate = 1;
    }
    
    for (k = idx->n = c_idx->n = 0; k < on; k++) {
        z = &(ol->list[k]); zwn = z->w_list.n; z->without_large_indel = l_nid = 0;
        if((!zwn) || (z->is_match != 1)) continue;
        hf = ((z->y_id >= tcut)?(1):(0));
        for (i = 0, li = (uint64_t)-1; i < zwn; i++) {
            if(is_ualn_win(z->w_list.a[i])) {
                n_id = z->w_list.a[i].x_end + 1 - z->w_list.a[i].x_start; 
                if(n_id >= 6) l_nid = 1;
                continue;
            }
            q[0] = z->w_list.a[i].x_start; q[1] = z->w_list.a[i].x_end;
            q[0] += bd; q[1] -= bd;
            if(q[1] >= q[0]) {
                m = ((uint64_t)q[0]); m <<= 32; 
                m += c_idx->n; kv_push(uint64_t, *idx, m);

                kv_pushp(ul_ov_t, *c_idx, &cp);
                ovlp_id(*cp) = k; ///ovlp id
                // ovlp_min_wid(*cp) = i; ///beg id of windows
                // ovlp_max_wid(*cp) = i; ///end id of windows
                ovlp_cur_wid(*cp) = i; ///cur id of windows
                ovlp_cur_xoff(*cp) = z->w_list.a[i].x_start; ///cur xpos
                ovlp_cur_yoff(*cp) = z->w_list.a[i].y_start; ///cur xpos
                ovlp_cur_ylen(*cp) = 0;
                ovlp_cur_coff(*cp) = 0; ///cur cigar off in cur window
                ovlp_bd(*cp) = bd;
                ovlp_hf(*cp) = hf;
            }

            if(l_nid == 0) {
                if(i == 0) {
                    p[0] = z->w_list.a[i].x_start; p[1] = z->x_pos_s;
                    n_id = ((p[0] >= p[1])? (p[0] - p[1]): (p[1] - p[0]));
                    if(n_id >= 6) l_nid = 1;
                } 
                
                if(li != (uint64_t)-1) {
                    p[0] = z->w_list.a[i].x_start; p[1] = z->w_list.a[li].x_end + 1;
                    n_id = ((p[0] >= p[1])? (p[0] - p[1]): (p[1] - p[0]));
                    if(n_id >= 6) l_nid = 1;

                    p[0] = z->w_list.a[i].y_start; p[1] = z->w_list.a[li].y_end + 1;
                    n_id = ((p[0] >= p[1])? (p[0] - p[1]): (p[1] - p[0]));
                    if(n_id >= 6) l_nid = 1;
                }

                if(i + 1 == zwn) {
                    p[0] = z->w_list.a[i].x_end; p[1] = z->x_pos_e;
                    n_id = ((p[0] >= p[1])? (p[0] - p[1]): (p[1] - p[0]));
                    if(n_id >= 6) l_nid = 1;
                } 

                if(l_nid == 0) {
                    set_bit_extz_t(ez, (*z), i); ci = 0;
                    while (ci < ez.cigar.n && l_nid == 0) {
                        ci = pop_trace(&(ez.cigar), ci, &c, &cl);
                        if(c >= 2 && cl >= 6) l_nid = 1;
                    }
                }
            }

            li = i;
        }
        z->without_large_indel = (l_nid?0:1);
    }

    int64_t srt_n = idx->n, s, e, t, rr; i = 0;
    radix_sort_ec64(idx->a, idx->a+idx->n);
    for (k = 1, i = 0; k < srt_n; k++) {
        if (k == srt_n || (idx->a[k]>>32) != (idx->a[i]>>32)) {
            if(k - i > 1) {
                for (t = i; t < k; t++) {
                    cp = &(c_idx->a[(uint32_t)idx->a[t]]);
                    // s = ol->list[ovlp_id(*cp)].w_list.a[ovlp_cur_wid(*cp)].x_start+ovlp_bd(*cp);
                    // assert(s == (int64_t)(idx->a[i]>>32));
                    m = ol->list[ovlp_id(*cp)].w_list.a[ovlp_cur_wid(*cp)].x_end+1-ovlp_bd(*cp);
                    m <<= 32; m += ((uint32_t)idx->a[t]); idx->a[t] = m;
                    // fprintf(stderr, "[M::%s] s::%ld\tsi::%lu\n", __func__, s, (idx->a[i]>>32));
                }
                radix_sort_ec64(idx->a + i, idx->a + k);
            }
            i = k;
        }
    }

    // print_debug_ovlp_cigar(ol, idx, c_idx);

    ///second index
    kv_resize(ul_ov_t, *c_idx, (c_idx->n<<1));
    ul_ov_t *idx_a = NULL, *idx_b = NULL;
    idx_a = c_idx->a; idx_b = c_idx->a;
    memcpy(idx_b, idx_a, c_idx->n * (sizeof((*(idx_a)))));

    kv_resize(uint64_t, *buf, ((wl<<1) + idx->n)); buf->n = ((wl<<1) + idx->n);
    memcpy(buf->a + (wl<<1), idx->a, idx->n * (sizeof((*(idx->a)))));
    memset(buf->a, 0, (wl<<1)*(sizeof((*(idx->a)))));
    if(hf_idx) {
        kv_resize(uint64_t, *hf_idx, (wl<<1)); hf_idx->n = wl<<1;
        memset(hf_idx->a, 0, (wl<<1)*(sizeof((*(hf_idx->a)))));
    }

    cc_idx_t ii_a, ii_b; memset(&ii_a, 0, sizeof(ii_a)); memset(&ii_b, 0, sizeof(ii_b));

    ii_a.c_idx = idx_a; ii_a.idx = idx; ii_a.i = ii_a.i0 = 0; ii_a.srt_n = ii_a.idx->n; ii_a.mms = ii_a.mme = (uint64_t)-1;
    ii_b.c_idx = idx_b; ii_b.idx = buf; ii_b.i = ii_b.i0 = (wl<<1); ii_b.srt_n = ii_b.idx->n; ii_b.mms = ii_b.mme = (uint64_t)-1;

    s = 0; e = wl; e = ((e<=ql)?e:ql); rr = 0; 
    aux_o->w_list.n = aux_o->w_list.c.n = 0; ///for cigar
    for (; s < ql; ) {
        rn = iter_cc_idx_t(ol->list, &ii_a, s, e, rr, 0, &ra);
        // debug_inter0(ol->list, ii_a.c_idx, ii_a.idx->a + ii_a.i0, ii_a.srt_n - ii_a.i0, ra, rn, s, e, 0, 1, "-0-");
        rr = wcns_vote(ol->list, rref, ((qid>=tcut)?(1):(0)), qu->seq, ql, tu, exz, ra, rn, s, e, ii_a.c_idx, &ii_b, occ_tot, occ_exact, aux_o, b32, cns, rid, &nec, o_rate, h_rate, hf_idx);
        s += wl; e += wl; e = ((e<=ql)?e:ql);
    }

    if(ii_b.mme > ii_b.mms && ii_b.mms != (uint64_t)-1) {
        nec += push_cns_anchor(ol->list, rref, ii_b.mms, ii_b.mme, ((qid>=tcut)?(1):(0)), qu->seq, ql, tu, exz, &ii_b, aux_o, 0, occ_tot, occ_exact, b32, cns, rid, o_rate, h_rate);
    }

    nec += push_cns_anchor(ol->list, rref, ql, ql, ((qid>=tcut)?(1):(0)), qu->seq, ql, tu, exz, &ii_b, aux_o, 1, occ_tot, occ_exact, b32, cns, rid, o_rate, h_rate);



    ///for debug
    // zwn = aux_o->w_list.n;
    // fprintf(stderr, "\n******[M::%s]****** wn::%ld, ql::%ld\n", __func__, zwn, ql);
    // prt_correct0_dbg(aux_o);
    // for (i = 0; i < zwn; i++) {
    //     fprintf(stderr, "[M::%s] (%ld)[%d, %d)\n", __func__, i, aux_o->w_list.a[i].x_start, aux_o->w_list.a[i].x_end+1);
    // }
    return nec;
}

void push_nec_re(overlap_region *in, asg16_v *ou)
{
    assert(in->w_list.n == 1);
    uint32_t n1 = in->w_list.a[0].clen;
    if(n1 > ou->m) {
        REALLOC(ou->a, n1); ou->m = n1;
    }
    ou->n = n1;
    memcpy(ou->a, in->w_list.c.a + in->w_list.a[0].cidx, n1*sizeof((*(in->w_list.c.a))));
}

uint32_t extract_max_exact_sub(asg16_v *in, int64_t xs0, int64_t xe0, int64_t ys0, int64_t ye0, int64_t *exk, int64_t *eyk, int64_t *eck, uint64_t *rxs, uint64_t *rxe, uint64_t *rys, uint64_t *rye)
{
    int64_t xk = *exk, yk = *eyk, ck = *eck, cn = in->n, ol, wx[2], wy[2], os, oe; uint16_t op, bq, bt; uint32_t cl, ovlp;
    *rxs = *rxe = *rys = *rye = 0;

    if((ck < 0) || (ck > cn)) {//(*ck) == cn is allowed
        ck = 0; xk = 0; yk = 0;
    }

    while (ck > 0 && xk >= xs0) {///x -> t; y -> p; first insertion and then match/mismatch
        --ck;
        op = in->a[ck]>>14;
        // ol = (((op == 1) || (op == 2))?(in->a[ck]&(0xfff)):(in->a[ck]&(0x3fff)));
        if((op == 2) || (op == 3)) {
            ol = in->a[ck]&(0xfff);
        } else if(op == 1) {
            ol = in->a[ck]&(0x3ff);
        } else {
            ol = in->a[ck]&(0x3fff);
        }
        if(op != 2) xk -= ol;
        if(op != 3) yk -= ol;
    }

    while (ck < cn && xk < xe0) {
        wx[0] = xk; wy[0] = yk; 
        // ck = pop_trace_bp(in, ck, &op, &b, &cl);
        ck = pop_trace_bp_f(in, ck, &op, &bq, &bt, &cl);
        if(op != 2) xk += cl;
        if(op != 3) yk += cl;
        wx[1] = xk; wy[1] = yk;  
        if(op == 0) {
            os = MAX(xs0, wx[0]); oe = MIN(xe0, wx[1]);
            ovlp = ((oe>os)? (oe-os):0);
            if((ovlp > 0) && (ovlp > (*rxe) - (*rxs))) {
                (*rxs) = wy[0] + os - wx[0]; 
                (*rxe) = wy[0] + oe - wx[0]; 

                (*rys) = ys0 + os - xs0; 
                (*rye) = ys0 + oe - xs0; 
            }
        }
    }

    *exk = xk; *eyk = yk; *eck = ck;
    if((*rxe) > (*rxs)) return 1;
    return 0; 
}

void debug_extract_max_exact_sub(uint32_t qid, UC_Read* qu, UC_Read* tu)
{
    uint32_t ci = 0, len, xk, yk, wx[2], wy[2], k; uint16_t c, b; 

    recover_UC_Read(tu, &R_INF, qid);

    ci = 0; yk = 0;
    while (ci < scc.a[qid].n) {
        ci = pop_trace_bp(&scc.a[qid], ci, &c, &b, &len);
        if(c != 3) yk += len;
    }
    resize_UC_Read(qu, yk);

    ci = 0; xk = yk = 0; 
    while (ci < scc.a[qid].n) {
        wx[0] = xk; wy[0] = yk;
        ci = pop_trace_bp(&scc.a[qid], ci, &c, &b, &len);
        if(c != 2) xk += len;
        if(c != 3) yk += len;
        wx[1] = xk; wy[1] = yk;
        if(c == 0) {
            // memcpy(p->a + wy[0], p->z.seq + wx[0], (wx[1]-wx[0])*sizeof((*(p->a))));
            for (; wx[0] < wx[1]; wx[0]++, wy[0]++) {
                qu->seq[wy[0]] = tu->seq[wx[0]];
            }
        } else if(c == 1 || c == 2) {
            for (k = wy[0]; k < wy[1]; k++) {
                qu->seq[k] = s_H[b]; 
            }
        }
        // if(i == 700) fprintf(stderr, "|%u%c(%c)(x::%u)(y::%u)", len, cm[c], ((c==1)||(c==2))?(cc[b]):('*'), wx[1], wy[1]); // s_H
    }
}

uint64_t extract_max_exact(overlap_region *z, asg16_v *ec, /**UC_Read *qu, UC_Read *tu,**/ uint32_t *rxs, uint32_t *rxe, uint32_t *rys, uint32_t *rye)
{
    // if(z->x_id == 75 && z->y_id == 59) {
    //     fprintf(stderr, "[M::%s]\tz->y_id::%u\n", __func__, z->y_id);
    //     if(z->y_pos_strand) {
    //         recover_UC_Read_RC(tu, &R_INF, z->y_id);
    //     } else {
    //         recover_UC_Read(tu, &R_INF, z->y_id); ///b->z.length
    //     }
    // }

    *rxs = *rxe = *rys = *rye = (uint32_t)-1;
    uint64_t k, rx[2], ry[2], xk, yk, wx[2], wy[2], mx[2], my[2]; 
    uint32_t cl, ck; uint16_t c; asg16_v ct; int64_t exk, eyk, eck;
    exk = eyk = eck = 0; mx[0] = mx[1] = my[0] = my[1] = 0;
    for (k = 0; k < z->w_list.n; k++) {
        ct.a = z->w_list.c.a + z->w_list.a[k].cidx;
        ct.n = ct.m = z->w_list.a[k].clen; ck = 0; 
        xk = z->w_list.a[k].x_start; yk = z->w_list.a[k].y_start;
        while (ck < ct.n) {
            wx[0] = xk; wy[0] = yk;
            ck = pop_trace(&ct, ck, &c, &cl);
            if(c != 2) xk += cl;
            if(c != 3) yk += cl;
            wx[1] = xk; wy[1] = yk;
            // if(c == 0) {
            //     if(memcmp(qref + wx[0], tu->seq + wy[0], wx[1] - wx[0])) {
            //         fprintf(stderr, "-0-[M::%s]\teq::[%lu,\t%lu)\tet::[%lu,\t%lu)\t%c\n", __func__, wx[0], wx[1], wy[0], wy[1], "+-"[z->y_pos_strand]);
            //         // exit(1);
            //     }
            // }
            if(wx[1] <= wx[0]) continue;
            if((wx[1] - wx[0]) <= (mx[1] - mx[0])) continue;
            if((c == 0) && (extract_max_exact_sub(ec, wx[0], wx[1], wy[0], wy[1], &exk, &eyk, &eck, &(rx[0]), &(rx[1]), &(ry[0]), &(ry[1])))) {
                // if(z->x_id == 75 && z->y_id == 59) {
                //     if(memcmp(qu->seq + rx[0], tu->seq + ry[0], rx[1] - rx[0])) {
                //         fprintf(stderr, "-1-[M::%s]\tzq::[%lu,\t%lu)\tzt::[%lu,\t%lu)\teq::[%lu,\t%lu)\tet::[%lu,\t%lu)\n", 
                //         __func__, wx[0], wx[1], wy[0], wy[1], rx[0], rx[1], ry[0], ry[1]);
                //         exit(1);
                //     } 
                //     else {
                //         fprintf(stderr, "-2-[M::%s]\tzq::[%lu,\t%lu)\tzt::[%lu,\t%lu)\teq::[%lu,\t%lu)\tet::[%lu,\t%lu)\n", 
                //         __func__, wx[0], wx[1], wy[0], wy[1], rx[0], rx[1], ry[0], ry[1]);

                //         fprintf(stderr, "[M::%s] qstr::%.*s\n", __func__, ((int)(rx[1] - rx[0])), qu->seq + rx[0]);
                //         fprintf(stderr, "[M::%s] tstr::%.*s\n", __func__, ((int)(ry[1] - ry[0])), tu->seq + ry[0]);
                //     }
                // }
                if((rx[1] - rx[0]) > (mx[1] - mx[0])) {
                    mx[0] = rx[0]; mx[1] = rx[1];
                    my[0] = ry[0]; my[1] = ry[1];
                }
            }
        }
    }

    if(mx[1] > mx[0]) {
        *rxs = mx[0]; *rxe = mx[1]; 
        *rys = my[0]; *rye = my[1]; 
        return 1;
    }
    
    return 0;
}

int64_t extract_max_exact_smp(asg16_v *in, int64_t xs0, int64_t xe0, int64_t ys0, int64_t ye0, uint32_t *rxs, uint32_t *rxe, uint32_t *rys, uint32_t *rye)
{
    *rxs = *rxe = *rys = *rye = 0; 
    if((xe0 <= xs0) || (ye0 <= ys0)) return 0;
    int64_t ok = 0, nk = 0, ck = 0, cn = in->n, wo[2], wn[2], os, oe; uint16_t op, bq, bt; uint32_t cl; uint64_t ovlp;
    while (ck < cn && ok < xe0) {
        wo[0] = ok; wn[0] = nk; 
        ck = pop_trace_bp_f(in, ck, &op, &bq, &bt, &cl);
        if(op != 2) ok += cl;
        if(op != 3) nk += cl;
        wo[1] = ok; wn[1] = nk;  

        if(op == 0) {
            os = MAX(xs0, wo[0]); oe = MIN(xe0, wo[1]);
            ovlp = ((oe>os)? (oe-os):0);
            if((ovlp > 0) && (ovlp > (*rxe) - (*rxs))) {
                // fprintf(stderr, "[M::%s]\to::[%ld,%ld)\n", __func__, os, oe);
                (*rxs) = wn[0] + os - wo[0]; 
                (*rxe) = wn[0] + oe - wo[0]; 

                (*rys) = ys0 + os - xs0; 
                (*rye) = ys0 + oe - xs0; 
            }
        }
    }

    return (*rxe) - (*rxs);
}

void push_ne_ovlp_flt(ma_hit_t_alloc* paf, overlap_region_alloc* ov, uint32_t flag, All_reads* R_INF, int64_t ql, asg16_v *ec, uint64_t tqn, uint16_t hf_only)
{
    uint64_t k, n; uint8_t el; ma_hit_t *z; uint32_t rxs, rxe, rys, rye; int64_t tl, qs, qe, ts, te, qr, tr;
    if(hf_only) {
        for (k = n = 0; k < paf->length; k++) {
            if(paf->buffer[k].tn >= tqn) continue;///no existing HiFi-to-HiFi, get them from ov
            z = &(paf->buffer[k]); el = z->el; z->el = 0;
            if(el) {
                if((ec) && (extract_max_exact_smp(ec, (uint32_t)(z->qns), z->qe, z->ts, z->te, &rxs, &rxe, &rys, &rye) > 0)) {
                    z->qns = ov->list[k].x_id; z->qns = z->qns << 32; z->qns = z->qns | (uint64_t)(rxs); z->qe = rxe;
                    z->ts = rys; z->te = rye;
                    z->el = 1;
                }

                if(z->el == 0) {///extend to normal
                    tl = Get_READ_LENGTH((*R_INF), Get_tn(*z));
                    qs = ((uint32_t)(z->qns)); qe = z->qe; ts = z->ts; te = z->te;
                    if(qs >= ql) {qs = ql;} if(qe > ql) {qe = ql;} 
                    if(ts >= tl) {ts = tl;} if(te > tl) {te = tl;} 

                    if(qs <= ts) {
                        ts -= qs; qs = 0;
                    } else {
                        qs -= ts; ts = 0;
                    }
                
                    qr = ql - qe; tr = tl - te;
                    if(qr <= tr) {
                        qe = ql; te += qr;        
                    } else {
                        te = tl; qe += tr; 
                    }
                
                    z->qns >>= 32; z->qns <<= 32; z->qns |= ((uint64_t)(qs)); z->qe = qe;
                    z->ts = ts; z->te = te;
                }
            }
            if((z->qe <= ((uint32_t)(z->qns))) || (z->te <= z->ts)) continue;
            paf->buffer[n++] = paf->buffer[k];
        }
        paf->length = n;
    } else {
        paf->length = 0;
    }

    for (k = 0, n = paf->length; k < ov->length; k++) {
        if(ov->list[k].is_match == flag) n++;
    }

    if(n > paf->size) {
        paf->size = n;
        REALLOC(paf->buffer, paf->size);
    }


    for (k = 0; k < ov->length; k++) {
        if(ov->list[k].is_match == flag) {
            // fprintf(stderr, "@%s\tSN:%.*s(id::%u)\terr::%u\n", flag==1?"SQ":"RQ", (int32_t)Get_NAME_LENGTH((*R_INF), ov->list[k].y_id), Get_NAME((*R_INF), ov->list[k].y_id), ov->list[k].y_id, ov->list[k].non_homopolymer_errors);

            z = &(paf->buffer[paf->length++]);

            z->qns = ov->list[k].x_id;
            z->qns = z->qns << 32;
            z->tn = ov->list[k].y_id;

            z->qns = z->qns | (uint64_t)(ov->list[k].x_pos_s);
            z->qe = ov->list[k].x_pos_e + 1;
            z->ts = ov->list[k].y_pos_s;
            z->te = ov->list[k].y_pos_e + 1;

            ///for overlap_list, the x_strand of all overlaps are 0, so the tmp.rev is the same as the y_strand
            z->rev = ov->list[k].y_pos_strand;

            z->bl = Get_READ_LENGTH((*R_INF), ov->list[k].y_id);
            z->ml = ov->list[k].strong;
            z->no_l_indel = ov->list[k].without_large_indel;

            z->el = 0;
            if(ec) {
                extract_max_exact(&ov->list[k], ec, /**qu, tu,**/ &rxs, &rxe, &rys, &rye);
                // z->el = 0;
                // fprintf(stderr, "[M::%s]\tq::[%u,\t%u)\tt::[%u,\t%u)\teq::[%u,\t%u)\tet::[%u,\t%u)\n", __func__, ov->list[k].x_pos_s, ov->list[k].x_pos_e + 1, ov->list[k].y_pos_s, ov->list[k].y_pos_e + 1, rxs, rxe, rys, rye);
                if(rxe > rxs) {
                    z->qns = ov->list[k].x_id;
                    z->qns = z->qns << 32;
                    z->qns = z->qns | (uint64_t)(rxs);
                    z->qe = rxe;
                    z->ts = rys;
                    z->te = rye;

                    z->el = 1;
                }
            }
        }
    }
}

void push_ne_ovlp(ma_hit_t_alloc* paf, overlap_region_alloc* ov, uint32_t flag, All_reads* R_INF, asg16_v *ec/**, uint64_t qid, UC_Read *qu, UC_Read *tu**/)
{
    // if(qu && tu) {
    //     debug_extract_max_exact_sub(qid, qu, tu);
    // }
    uint64_t k, n; ma_hit_t *z; uint32_t rxs, rxe, rys, rye;
    for (k = n = 0; k < ov->length; k++) {
        if(ov->list[k].is_match == flag) n++;
    }

    if(n > paf->size) {
        paf->size = n;
        REALLOC(paf->buffer, paf->size);
    }

    for (k = paf->length = 0; k < ov->length; k++) {
        if(ov->list[k].is_match == flag) {
            // fprintf(stderr, "@%s\tSN:%.*s(id::%u)\terr::%u\n", flag==1?"SQ":"RQ", (int32_t)Get_NAME_LENGTH((*R_INF), ov->list[k].y_id), Get_NAME((*R_INF), ov->list[k].y_id), ov->list[k].y_id, ov->list[k].non_homopolymer_errors);

            z = &(paf->buffer[paf->length++]);

            z->qns = ov->list[k].x_id;
            z->qns = z->qns << 32;
            z->tn = ov->list[k].y_id;

            z->qns = z->qns | (uint64_t)(ov->list[k].x_pos_s);
            z->qe = ov->list[k].x_pos_e + 1;
            z->ts = ov->list[k].y_pos_s;
            z->te = ov->list[k].y_pos_e + 1;

            ///for overlap_list, the x_strand of all overlaps are 0, so the tmp.rev is the same as the y_strand
            z->rev = ov->list[k].y_pos_strand;

            z->bl = Get_READ_LENGTH((*R_INF), ov->list[k].y_id);
            z->ml = ov->list[k].strong;
            z->no_l_indel = ov->list[k].without_large_indel;

            z->el = 0;
            if(ec) {
                extract_max_exact(&ov->list[k], ec, /**qu, tu,**/ &rxs, &rxe, &rys, &rye);
                // z->el = 0;
                // fprintf(stderr, "[M::%s]\tq::[%u,\t%u)\tt::[%u,\t%u)\teq::[%u,\t%u)\tet::[%u,\t%u)\n", __func__, ov->list[k].x_pos_s, ov->list[k].x_pos_e + 1, ov->list[k].y_pos_s, ov->list[k].y_pos_e + 1, rxs, rxe, rys, rye);
                if(rxe > rxs) {
                    z->qns = ov->list[k].x_id;
                    z->qns = z->qns << 32;
                    z->qns = z->qns | (uint64_t)(rxs);
                    z->qe = rxe;
                    z->ts = rys;
                    z->te = rye;

                    z->el = 1;
                }
            }
        }
    }
}


void pull_ovlp_syn(ma_hit_t_alloc* paf, uint64_t tqn)
{
    uint64_t k, m;
    for (k = m = 0; k < paf->length; k++) {
        if(paf->buffer[k].tn < tqn) continue; ///ONT
        paf->buffer[m++] = paf->buffer[k];
    }
    paf->length = m;
}

uint64_t gen_ne_ovlp_hf_region(asg64_v *idx, int64_t het_cov, double hf_rate)
{
    if(idx->n == 0) return 0;///no HiFi reads

    radix_sort_ec64(idx->a, idx->a + idx->n); 

    int64_t min_dp = ceil(((double)het_cov)*hf_rate*0.6); if(min_dp < 6) min_dp = 6;
    int64_t k, dp, old_dp, st, ed, s0, e0, n = idx->n; uint64_t m;
    for (k = dp = old_dp = st = ed = 0; k < n; k++) {
        old_dp = dp;
        if (idx->a[k]&1) {--dp;}///if a[j] is qe
        else {++dp;}

        ed = idx->a[k]>>1;
        if((ed > st) && (old_dp >= min_dp)) {
            s0 = e0 = -1;
            if(idx->n > (uint64_t)n) {
                s0 = idx->a[idx->n-1]>>32;
                e0 = (uint32_t)idx->a[idx->n-1];
            }
            if(e0 == st) {
                m = s0; m <<= 32; m |= (uint64_t)ed;
                idx->a[idx->n-1] = m;
            } else {
                assert(st > e0);
                m = st; m <<= 32; m |= (uint64_t)ed;
                kv_push(uint64_t, *idx, m);
            }
        }
        st = ed;
    }

    return idx->n - n;
}

void push_ne_ovlp_syn(ma_hit_t_alloc* paf, overlap_region_alloc* ov, uint32_t flag, All_reads* R_INF, asg16_v *ec, asg64_v *idx, uint64_t tqn, int64_t het_cov, double hf_rate) 
{
    uint64_t k, s, e, *sa = NULL, sn, sk; ma_hit_t *z; uint32_t rxs, rxe, rys, rye;
    for (k = idx->n = sn = 0; k < ov->length; k++) {
        if(ov->list[k].is_match == flag) {
            if(ov->list[k].y_id >= tqn) {///HiFi
                s = ov->list[k].x_pos_s; s = s<<1; kv_push(uint64_t, *idx, s);
                e = ov->list[k].x_pos_e + 1; e = (e<<1)|1; kv_push(uint64_t, *idx, e);                
                // idx->n += 2;
            }
            sn++;
        }
    }

    if(sn > paf->size) {
        paf->size = sn;
        REALLOC(paf->buffer, paf->size);
    }
    sn = gen_ne_ovlp_hf_region(idx, het_cov, hf_rate); sa = idx->a + idx->n - sn;

    for (k = paf->length = 0; k < ov->length; k++) {
        if(ov->list[k].is_match == flag) {
            // fprintf(stderr, "@%s\tSN:%.*s(id::%u)\terr::%u\n", flag==1?"SQ":"RQ", (int32_t)Get_NAME_LENGTH((*R_INF), ov->list[k].y_id), Get_NAME((*R_INF), ov->list[k].y_id), ov->list[k].y_id, ov->list[k].non_homopolymer_errors);

            z = &(paf->buffer[paf->length++]);

            z->qns = ov->list[k].x_id;
            z->qns = z->qns << 32;
            z->tn = ov->list[k].y_id;

            z->qns = z->qns | (uint64_t)(ov->list[k].x_pos_s);
            z->qe = ov->list[k].x_pos_e + 1;
            z->ts = ov->list[k].y_pos_s;
            z->te = ov->list[k].y_pos_e + 1;

            ///for overlap_list, the x_strand of all overlaps are 0, so the tmp.rev is the same as the y_strand
            z->rev = ov->list[k].y_pos_strand;

            z->bl = Get_READ_LENGTH((*R_INF), ov->list[k].y_id);
            z->ml = ov->list[k].strong;
            z->no_l_indel = ov->list[k].without_large_indel;

            if(ec) {
                extract_max_exact(&ov->list[k], ec, /**qu, tu,**/ &rxs, &rxe, &rys, &rye);
                z->el = 0;
                // fprintf(stderr, "[M::%s]\tq::[%u,\t%u)\tt::[%u,\t%u)\teq::[%u,\t%u)\tet::[%u,\t%u)\n", __func__, ov->list[k].x_pos_s, ov->list[k].x_pos_e + 1, ov->list[k].y_pos_s, ov->list[k].y_pos_e + 1, rxs, rxe, rys, rye);
                if(rxe > rxs) {
                    z->qns = ov->list[k].x_id;
                    z->qns = z->qns << 32;
                    z->qns = z->qns | (uint64_t)(rxs);
                    z->qe = rxe;
                    z->ts = rys;
                    z->te = rye;

                    z->el = 1;
                }
            }
        }
    }
    if(sn <= 0) return;///no HiFi
    
    uint64_t s0, e0, st, ed;
    for (k = 0; k < paf->length; k++) {
        z = &(paf->buffer[k]); 
        if(z->tn >= tqn) {///HiFi
            s0 = (uint32_t)z->qns; e0 = z->qe;
            for (sk = 0; sk < sn; sk++) {
                st = sa[sk]>>32; ed = (uint32_t)sa[sk];
                if(st <= s0 && ed >= e0) {
                    z->bl = 0x7FFFFFFF; break;
                }
                if(st >= s0) break;
            }
        }
    }
}


void push_ff_ovlp(ma_hit_t_alloc* paf, overlap_region_alloc* ov, uint32_t flag, All_reads* R_INF, uint64_t *cnt)
{
    // if(qu && tu) {
    //     debug_extract_max_exact_sub(qid, qu, tu);
    // }
    uint64_t k, n; ma_hit_t *z; 
    for (k = n = 0; k < ov->length; k++) {
        if(ov->list[k].is_match == flag) n++;
    }

    if(n > paf->size) {
        paf->size = n;
        REALLOC(paf->buffer, paf->size);
    }

    for (k = paf->length = 0; k < ov->length; k++) {
        if(ov->list[k].is_match == flag) {
            z = &(paf->buffer[paf->length++]);

            z->qns = ov->list[k].x_id;
            z->qns = z->qns << 32;
            z->tn = ov->list[k].y_id;

            z->qns = z->qns | (uint64_t)(ov->list[k].x_pos_s);
            z->qe = ov->list[k].x_pos_e + 1;
            z->ts = ov->list[k].y_pos_s;
            z->te = ov->list[k].y_pos_e + 1;

            ///for overlap_list, the x_strand of all overlaps are 0, so the tmp.rev is the same as the y_strand
            z->rev = ov->list[k].y_pos_strand;

            z->bl = Get_READ_LENGTH((*R_INF), ov->list[k].y_id);
            z->ml = ov->list[k].strong;
            z->no_l_indel = ov->list[k].without_large_indel;
            z->el = ov->list[k].shared_seed;

            if(z->rev) {
                z->ts = z->bl - ov->list[k].y_pos_e - 1;
                z->te = z->bl - ov->list[k].y_pos_s;
            }

            if(flag == 1) {
                if(z->ml == 1) cnt[2]++;
                if(z->ml == 0) cnt[3]++;
                if(z->el == 1) cnt[4]++;
                if(z->no_l_indel) cnt[5]++;
            }
            z->del = 0;
        }
    }

    if(flag == 1) cnt[0] += paf->length;
    if(flag == 2) cnt[1] += paf->length;
}

void debug_mm_exact_cigar(overlap_region_alloc* ol, uint32_t qid, UC_Read *qu, UC_Read *tu)
{
    int64_t on = ol->length, k, i, zwn, xk, yk; uint32_t cl, ck; ///bit_extz_t ez; 
    overlap_region *z; asg16_v ct; uint64_t wx[2], wy[2]; uint16_t c;
    recover_UC_Read(qu, &R_INF, qid);

    for (i = 0; i < on; i++) {
        z = &(ol->list[i]); zwn = z->w_list.n; 
        if(z->y_pos_strand) {
            recover_UC_Read_RC(tu, &R_INF, z->y_id);
        } else {
            recover_UC_Read(tu, &R_INF, z->y_id); ///b->z.length
        }

        // fprintf(stderr, "[M::%s] x_id::%u\ty_id::%u\tx::[%u, %u)\ty::[%u, %u)\tzwn::%ld\n", 
        //         __func__, z->x_id, z->y_id, z->x_pos_s, z->x_pos_e + 1, z->y_pos_s, z->y_pos_e + 1, zwn);
        // fprintf(stderr, "qstr(%lld)::%.*s\n", qu->length, (int32_t)(qu->length), qu->seq);
        // fprintf(stderr, "tstr(%lld)::%.*s\n", tu->length, (int32_t)(tu->length), tu->seq);

        for (k = 0; k < zwn; k++) {
            // set_bit_extz_t(ez, (*z), k);
            // if(!cigar_check(tu->seq, qu->seq, &ez)) {
            //     fprintf(stderr, "\n[M::%s] x_id::%u, y_id::%u, x::[%u, %u), y::[%u, %u)\n", __func__, z->x_id, z->y_id, z->x_pos_s, z->x_pos_e + 1, z->y_pos_s, z->y_pos_e + 1);
            //     exit(1);
            // }
            // continue;
            ct.a = z->w_list.c.a + z->w_list.a[k].cidx;
            ct.n = ct.m = z->w_list.a[k].clen; ck = 0; 
            xk = z->w_list.a[k].x_start; yk = z->w_list.a[k].y_start;
            while (ck < ct.n) {
                wx[0] = xk; wy[0] = yk;
                ck = pop_trace(&ct, ck, &c, &cl);
                if(c != 2) xk += cl;
                if(c != 3) yk += cl;
                wx[1] = xk; wy[1] = yk;
                if(c == 0) {
                    if(memcmp(qu->seq + wx[0], tu->seq + wy[0], wx[1] - wx[0])) {
                        fprintf(stderr, "\n-0-[M::%s]\teq::[%lu,\t%lu)\tet::[%lu,\t%lu)\t%c\n", __func__, wx[0], wx[1], wy[0], wy[1], "+-"[z->y_pos_strand]);
                        fprintf(stderr, "qstr(%u)::%.*s\n", z->x_id, (int32_t)(wx[1] - wx[0]), qu->seq + wx[0]);
                        fprintf(stderr, "tstr(%u)::%.*s\n", z->y_id, (int32_t)(wy[1] - wy[0]), tu->seq + wy[0]);
                        // exit(1);
                    } 
                    // else {
                    //     fprintf(stderr, "\n-1-[M::%s]\teq::[%lu,\t%lu)\tet::[%lu,\t%lu)\t%c\n", __func__, wx[0], wx[1], wy[0], wy[1], "+-"[z->y_pos_strand]);
                    //     fprintf(stderr, "qstr(%u)::%.*s\n", z->x_id, (int32_t)(wx[1] - wx[0]), qu->seq + wx[0]);
                    //     fprintf(stderr, "tstr(%u)::%.*s\n", z->y_id, (int32_t)(wy[1] - wy[0]), tu->seq + wy[0]);
                    // }
                }
            }
        }
        
    }
}

void check_well_cal(asg16_v *sc, asg64_v *idx, uint8_t *f_ec, uint8_t *abnormal, int64_t len, int64_t min_dp, ma_hit_t_alloc *in)
{
    uint64_t k, s, e; int64_t dp, old_dp, st = 0, ed; ma_hit_t *z; 

    (*f_ec) = 1; (*abnormal) = 0; idx->n = 0; 
    for (k = 0; k < in->length; k++) {
        z = &(in->buffer[k]);
        s = ((uint32_t)(z->qns)); e = z->qe;
        kv_push(uint64_t, (*idx), (s<<1));
        kv_push(uint64_t, (*idx), (e<<1)|1);
    }

    radix_sort_ec64(idx->a, idx->a + idx->n);
    for (k = 0, dp = 0, st = ed = 0; k < idx->n; ++k) {
        old_dp = dp;
        ///if a[j] is qe
        if (idx->a[k]&1) --dp;
        else ++dp;

        ed = idx->a[k]>>1;
        if(ed > st) {
            if(old_dp < min_dp) (*f_ec) = 0;
            if(old_dp == 0) {
                if(st > 0 && ed < len) {
                    (*abnormal) = 1;
                }else if((*abnormal)==0){
                    (*abnormal) = 2;
                }
            }
        }

        st = ed;
    }


    ed = len; old_dp = dp;
    if(ed > st) {
        if(old_dp < min_dp) (*f_ec) = 0;
        if(old_dp == 0) {
            if(st > 0 && ed < len) {
                (*abnormal) = 1;
            }else if((*abnormal) == 0){
                (*abnormal) = 2;
            }
        }
    }

    if((*f_ec)) {
        for (k = 0; (k < sc->n) && ((sc->a[k]>>14) == 0); k++);
        if(k < sc->n) (*f_ec) = 0;
    }    
}


void gen_ff_hpc(asg8_v *fi, char *a, int64_t an, int64_t hpc_rr, int64_t hpc_cutoff)
{
    int64_t p, k, r, rc, zs, ze;
    kv_resize(uint8_t, *fi, (uint64_t)an); 
    memset(fi->a, 0, sizeof((*(fi->a)))*an);
    fi->n = an;

    for (p = 0; p < an; ) {
        for (r = 1, zs = ze = 0; r <= hpc_rr; r++) {
            rc = r * hpc_cutoff/**HPC_CC**/;
            ///inlcuding p
            for (k = p + r; (k < an) && ((k-r) >= 0) && (a[k] == a[k-r]); k++){;} ze = k; if(ze > an) {ze = an;} 
            for (k = p - 1; (k >= 0) && ((k+r) < an) && (a[k] == a[k+r]); k--){;} zs = k + 1; if(zs < 0) {zs = 0;}
            if(((ze - zs) > r) && ((ze - zs) >= rc)) {
                // fprintf(stderr, "+[M::%s]\t[%ld,\t%ld)\tr::%ld\trc::%ld\tp::%ld\n", __func__, zs, ze, r, rc, p);
                for (k = zs; k < ze; k++) fi->a[k] |= ((uint8_t)(1<<(r-1)));
                break;
            } 

            ///inlcuding p
            for (k = p - r; (k >= 0) && ((k+r) < an) && (a[k] == a[k+r]); k--){;} zs = k + 1; if(zs < 0) {zs = 0;} 
            for (k = p + 1; (k < an) && ((k-r) >= 0) && (a[k] == a[k-r]); k++){;} ze = k; if(ze > an) {ze = an;} 
            if(((ze - zs) > r) && ((ze - zs) >= rc)) {
                // fprintf(stderr, "-[M::%s]\t[%ld,\t%ld)\tr::%ld\trc::%ld\n", __func__, zs, ze, r, rc);
                for (k = zs; k < ze; k++) fi->a[k] |= ((uint8_t)(1<<(r-1)));
                break;
            } 
        }
        p++; if(p < ze) p = ze;
    }

    // for (k = 1, p = 0; k <= an; k++) {
    //     if((k == an) || ((!!fi->a[p]) != (!!fi->a[k]))) {
    //         if(fi->a[p]) fprintf(stderr, "[M::%s]\t[%ld,\t%ld)\tan::%ld\n", __func__, p + 1, k + 1, an);
    //         p = k;
    //     }
    // }

    // for (k = 0; k < an; k++) {
    //     if(fi->a[k] == 0) continue;
    //     fprintf(stderr, "p::%ld\t", k + 1);
    //     for (r = 0; r < 8; r++) {
    //         if((fi->a[k]>>r)&1) fprintf(stderr, "r::%ld\t", r + 1);
    //     }
    //     fprintf(stderr, "\n");
    // }
    
}



void ggen_chain_clus_0(overlap_region_alloc* ol, asg32_v *v32, asg64_v *v64, uint32_t **a_cu, uint32_t **a_ci, uint32_t **ocn, uint32_t **osc, uint64_t **idx_cu, uint64_t *n_cu)
{
    uint64_t i, k, l, kc, lc;
    (*a_cu) = (*a_ci) = (*ocn) = (*osc) = NULL; (*idx_cu) = NULL; (*n_cu) = 0;
    if(v32->n > 0) {
        assert(v32->n == (ol->length<<1));
        v32->n = (ol->length<<2); kv_resize(uint32_t, *v32, v32->n);

        (*a_cu) = v32->a; (*a_ci) = v32->a + ol->length;
        (*ocn) = v32->a + ol->length + ol->length;
        (*osc) = v32->a + ol->length + ol->length + ol->length;

        for (k = 1, l = (*n_cu) = 0; k <= ol->length; k++) {
            if((k == ol->length) || (*a_ci)[(*a_cu)[k]] != (*a_ci)[(*a_cu)[l]]) {
                (*n_cu)++;
                l = k;
            }
        }
    
        v64->n = (*n_cu) + 1;
        kv_resize(uint64_t, *v64, v64->n);
        (*idx_cu) = v64->a;
        for (k = 1, l = kc = lc = 0; k <= ol->length; k++) {
            if((k == ol->length) || (*a_ci)[(*a_cu)[k]] != (*a_ci)[(*a_cu)[l]]) {
                for (i = l; i < k; i++) (*a_ci)[(*a_cu)[i]] = kc;
                (*idx_cu)[kc++] = lc; lc += k - l;
                l = k;
            }
        }
        assert(kc == (*n_cu));
        (*idx_cu)[kc] = lc;
    } else {
        v32->n = (ol->length<<1); kv_resize(uint32_t, *v32, v32->n);
        (*ocn) = v32->a;
        (*osc) = v32->a + ol->length;
    }

    for (k = 0; k < ol->length; k++) {
        (*ocn)[k] = ol->list[k].align_length;
        (*osc)[k] = ol->list[k].shared_seed;
        ol->list[k].align_length = 0;
    }
}

uint64_t gen_hc_r_alin_ea_flt(ha_abuf_t *ab, overlap_region_alloc* ol, Candidates_list *cl, All_reads *rref, UC_Read* qu, UC_Read* tu, bit_extz_t *exz, overlap_region *aux_o, uint64_t max_n_chain, uint64_t max_n_chain_f, uint64_t chain_cutoff, double e_rate, int64_t wl, int64_t rid, int64_t khit, int64_t move_gap, asg16_v *buf, asg64_v *srt, ma_hit_t_alloc *in, uint8_t chem_drop, double align_gap_rate, int64_t align_gap_max,
    uint64_t sec_aln_win, uint64_t sec_aln_cov, double sec_aln_err_rate, double sec_aln_max, asg64_v *bp, uint64_t ocw, asg8_v *hpz, asg32_v *v32, uint8_t is_dedup)
{
    if(ol->length <= 0) return 0;

    uint32_t *a_cu = NULL, *a_ci = NULL, *ocn = NULL, *osc = NULL; uint64_t k, *idx_cu = NULL, n_cu = 0, tot_b = 0; v32->n = 0;
    if(ol->length > max_n_chain) {
        gen_chain_clus(ab, ol, cl, v32);///ol->align_length has not been set to 0
    }
    ggen_chain_clus_0(ol, v32, bp, &a_cu, &a_ci, &ocn, &osc, &idx_cu, &n_cu);
    
    

    uint64_t i, m, *ei, en, *oi, on, tid, trev, nec; overlap_region *z; ma_hit_t *p;
    for (k = srt->n = 0; k < in->length; k++) {
        if(in->buffer[k].el) {
            m = in->buffer[k].tn; m <<= 1; m |= in->buffer[k].rev; 
            m <<= 32; m |= k; kv_push(uint64_t, (*srt), m);
        }
    }

    if(!(srt->n)) {
        gen_ff_hpc(hpz, qu->seq, qu->length, HPC_RR_Q, HPC_CC_Q);
        tot_b = gen_hc_r_alin_adp_smp(ol, cl, rref, qu, tu, exz, aux_o, e_rate, wl, rid, khit, move_gap, buf, chem_drop, align_gap_rate, align_gap_max, sec_aln_win, sec_aln_cov, sec_aln_err_rate, sec_aln_max, srt, ocw, hpz->a, a_cu, a_ci, ocn, osc,  
            idx_cu, n_cu, bp, max_n_chain>0?max_n_chain:1, max_n_chain_f>0?max_n_chain_f:1, chain_cutoff, ((asm_opt.hom_cov*HC_AV_MIN)>0)?(asm_opt.hom_cov*HC_AV_MIN):(1), 1, is_dedup);
    } else {
        kv_resize(uint64_t, *srt, (srt->n + ol->length));
        ei = srt->a; en = srt->n; oi = srt->a + srt->n; on = ol->length;
        for (k = 0; k < on; k++) {
            z = &(ol->list[k]); z->is_match = z->strong = z->without_large_indel = 0;
            oi[k] = z->y_id; oi[k] <<= 1; oi[k] |= z->y_pos_strand;
            oi[k] <<= 32; oi[k] |= k;
        }

        radix_sort_ec64(ei, ei + en); radix_sort_ec64(oi, oi + on);
        for (k = i = nec = 0; k < on; k++) {
            z = &(ol->list[(uint32_t)oi[k]]); tid = z->y_id; trev = z->y_pos_strand;
            for (; (i < en) && ((ei[i]>>32) < ((tid<<1)|trev)); i++);
            if((i < en) && ((ei[i]>>32) == ((tid<<1)|trev))) {
                p = &(in->buffer[(uint32_t)ei[i]]);
                if((z->x_pos_s == ((uint32_t)p->qns)) && (z->x_pos_e + 1 == p->qe) && 
                            (z->y_pos_s == p->ts) && (z->y_pos_e + 1 == p->te)) {
                    resize_UC_Read(tu, p->te - p->ts); recover_UC_Read_sub_region(tu->seq, p->ts, p->te - p->ts, trev, rref, tid);
                    if(exact_ec_check(qu->seq, qu->length, tu->seq, p->te - p->ts, ((uint32_t)p->qns), p->qe, 0, p->te - p->ts)) {
                        z->is_match = 1; z->shared_seed = z->non_homopolymer_errors;///for index
                        z->non_homopolymer_errors = 0; z->strong = z->without_large_indel = 0;
                        set_exact_exz(exz, z->x_pos_s, z->x_pos_e + 1, z->y_pos_s, z->y_pos_e + 1); push_alnw(z, exz);
                        nec++;
                    }
                }
            }
        }

        if(on > nec) {
            gen_ff_hpc(hpz, qu->seq, qu->length, HPC_RR_Q, HPC_CC_Q);
            tot_b = gen_hc_r_alin_adp_smp(ol, cl, rref, qu, tu, exz, aux_o, e_rate, wl, rid, khit, move_gap, buf, chem_drop, align_gap_rate, align_gap_max, sec_aln_win, sec_aln_cov, sec_aln_err_rate, sec_aln_max, srt, ocw, hpz->a, a_cu, a_ci, ocn, osc,  
                idx_cu, n_cu, bp, max_n_chain>0?max_n_chain:1, max_n_chain_f>0?max_n_chain_f:1, chain_cutoff, ((asm_opt.hom_cov*HC_AV_MIN)>0)?(asm_opt.hom_cov*HC_AV_MIN):(1), 0, is_dedup);
        }
    }

    if(ol->length) srt_olst(ol);

    return tot_b;
}


uint64_t gen_hc_r_alin_ea_flt_mmp(ha_abuf_t *ab, overlap_region_alloc* ol, Candidates_list *cl, All_reads *rref, UC_Read* qu, UC_Read* tu, bit_extz_t *exz, overlap_region *aux_o, uint64_t max_n_chain, uint64_t max_n_chain_f, uint64_t chain_cutoff, double e_rate, int64_t wl, int64_t rid, int64_t khit, int64_t move_gap, asg16_v *buf, asg64_v *srt, ma_hit_t_alloc *in, uint8_t chem_drop, double align_gap_rate, int64_t align_gap_max,
    uint64_t sec_aln_win, uint64_t sec_aln_cov, double sec_aln_err_rate, double sec_aln_max, asg64_v *bp, uint64_t ocw, asg8_v *hpz, asg32_v *v32)
{
    if(ol->length <= 0) return 0;

    uint64_t k, tot_b = 0; v32->n = 0; uint64_t i, m, *ei, en, *oi, on, tid, trev, nec; overlap_region *z; ma_hit_t *p;
    v32->n = ol->length<<1; kv_resize(uint32_t, *v32, v32->n); 
    for (i = 0; i < ol->length; i++) {
        v32->a[i] = ol->list[i].align_length;
        v32->a[i+ol->length] = ol->list[i].shared_seed;
        ol->list[i].align_length = 0;
    }

    for (k = srt->n = 0; k < in->length; k++) {
        if(in->buffer[k].el) {
            m = in->buffer[k].tn; m <<= 1; m |= in->buffer[k].rev; 
            m <<= 32; m |= k; kv_push(uint64_t, (*srt), m);
        }
    }

    if(!(srt->n)) {
        // gen_ff_hpc(hpz, qu->seq, qu->length, HPC_RR_Q, HPC_CC_Q);
        tot_b = gen_hc_r_alin_adp_mmp_1(ol, cl, rref, qu, tu, exz, aux_o, e_rate, wl, rid, khit, move_gap, buf, chem_drop, align_gap_rate, align_gap_max, sec_aln_win, sec_aln_cov, sec_aln_err_rate, sec_aln_max, srt, ocw, NULL/**hpz->a**/, 
            v32, bp, max_n_chain>0?max_n_chain:1, max_n_chain_f>0?max_n_chain_f:1, chain_cutoff, ((asm_opt.hom_cov*HC_AV_MIN)>0)?(asm_opt.hom_cov*HC_AV_MIN):(1), 1);
    } else {
        kv_resize(uint64_t, *srt, (srt->n + ol->length));
        ei = srt->a; en = srt->n; oi = srt->a + srt->n; on = ol->length;
        for (k = 0; k < on; k++) {
            z = &(ol->list[k]); z->is_match = z->strong = z->without_large_indel = 0;
            oi[k] = z->y_id; oi[k] <<= 1; oi[k] |= z->y_pos_strand;
            oi[k] <<= 32; oi[k] |= k;
        }

        radix_sort_ec64(ei, ei + en); radix_sort_ec64(oi, oi + on);
        for (k = i = nec = 0; k < on; k++) {
            z = &(ol->list[(uint32_t)oi[k]]); tid = z->y_id; trev = z->y_pos_strand;
            for (; (i < en) && ((ei[i]>>32) < ((tid<<1)|trev)); i++);
            if((i < en) && ((ei[i]>>32) == ((tid<<1)|trev))) {
                p = &(in->buffer[(uint32_t)ei[i]]);
                if((z->x_pos_s == ((uint32_t)p->qns)) && (z->x_pos_e + 1 == p->qe) && 
                            (z->y_pos_s == p->ts) && (z->y_pos_e + 1 == p->te)) {
                    resize_UC_Read(tu, p->te - p->ts); recover_UC_Read_sub_region(tu->seq, p->ts, p->te - p->ts, trev, rref, tid);
                    if(exact_ec_check(qu->seq, qu->length, tu->seq, p->te - p->ts, ((uint32_t)p->qns), p->qe, 0, p->te - p->ts)) {
                        z->is_match = 1; z->shared_seed = z->non_homopolymer_errors;///for index
                        z->non_homopolymer_errors = 0; z->strong = z->without_large_indel = 0;
                        set_exact_exz(exz, z->x_pos_s, z->x_pos_e + 1, z->y_pos_s, z->y_pos_e + 1); push_alnw(z, exz);
                        nec++;
                    }
                }
            }
        }

        if(on > nec) {
            // gen_ff_hpc(hpz, qu->seq, qu->length, HPC_RR_Q, HPC_CC_Q);
            tot_b = gen_hc_r_alin_adp_mmp_1(ol, cl, rref, qu, tu, exz, aux_o, e_rate, wl, rid, khit, move_gap, buf, chem_drop, align_gap_rate, align_gap_max, sec_aln_win, sec_aln_cov, sec_aln_err_rate, sec_aln_max, srt, ocw, NULL/**hpz->a**/, 
                v32, bp, max_n_chain>0?max_n_chain:1, max_n_chain_f>0?max_n_chain_f:1, chain_cutoff, ((asm_opt.hom_cov*HC_AV_MIN)>0)?(asm_opt.hom_cov*HC_AV_MIN):(1), 0);
        }
    }

    if(ol->length) srt_olst(ol);

    return tot_b;
}

uint64_t gen_hc_r_alin_ea(overlap_region_alloc* ol, Candidates_list *cl, All_reads *rref, UC_Read* qu, UC_Read* tu, bit_extz_t *exz, overlap_region *aux_o, double e_rate, int64_t wl, int64_t rid, int64_t khit, int64_t move_gap, asg16_v *buf, asg64_v *srt, ma_hit_t_alloc *in, uint8_t chem_drop, double align_gap_rate, int64_t align_gap_max,
    uint64_t sec_aln_win, uint64_t sec_aln_cov, double sec_aln_err_rate, double sec_aln_max, asg64_v *kp, asg8_v *hpz)
{
    if(ol->length <= 0) return 0;


    // uint64_t k, l, i, s, m, mm_k, *ei, en, *oi, on, tid, trev, nec; int64_t sc, mm_sc, plus, minus; overlap_region *z, t; ma_hit_t *p;
    uint64_t k, i, m, *ei, en, *oi, on, tid, trev, nec, tot_b = 0; overlap_region *z; ma_hit_t *p;
    srt->n = 0;
    for (k = 0; k < in->length; k++) {
        if(in->buffer[k].el) {
            m = in->buffer[k].tn; m <<= 1; m |= in->buffer[k].rev; 
            m <<= 32; m |= k; kv_push(uint64_t, (*srt), m);
        }
    }

    if(!(srt->n)) {
        // gen_ff_hpc(hpz, qu->seq, qu->length, HPC_RR_Q, HPC_CC_Q);
        tot_b = gen_hc_r_alin(ol, cl, rref, qu, tu, exz, aux_o, e_rate, wl, rid, khit, move_gap, buf, chem_drop, align_gap_rate, align_gap_max, sec_aln_win, sec_aln_cov, sec_aln_err_rate, sec_aln_max, kp, NULL/**hpz->a**/);
    } else {
        ///debug for memory
        // snprintf(NULL, 0, "dwn::%u\tdcn::%u", (uint32_t)aux_o->w_list.n, (uint32_t)aux_o->w_list.c.n);

        kv_resize(uint64_t, *srt, (srt->n + ol->length));
        ei = srt->a; en = srt->n; oi = srt->a + srt->n; on = ol->length;
        for (k = 0; k < on; k++) {
            z = &(ol->list[k]); z->is_match = z->strong = z->without_large_indel = 0;
            oi[k] = z->y_id; oi[k] <<= 1; oi[k] |= z->y_pos_strand;
            oi[k] <<= 32; oi[k] |= k;
        }

        radix_sort_ec64(ei, ei + en); radix_sort_ec64(oi, oi + on);
        for (k = i = nec = 0; k < on; k++) {
            z = &(ol->list[(uint32_t)oi[k]]); tid = z->y_id; trev = z->y_pos_strand;
            for (; (i < en) && ((ei[i]>>32) < ((tid<<1)|trev)); i++);
            if((i < en) && ((ei[i]>>32) == ((tid<<1)|trev))) {
                p = &(in->buffer[(uint32_t)ei[i]]);
                if((z->x_pos_s == ((uint32_t)p->qns)) && (z->x_pos_e + 1 == p->qe) && 
                            (z->y_pos_s == p->ts) && (z->y_pos_e + 1 == p->te)) {
                    resize_UC_Read(tu, p->te - p->ts); recover_UC_Read_sub_region(tu->seq, p->ts, p->te - p->ts, trev, rref, tid);
                    if(exact_ec_check(qu->seq, qu->length, tu->seq, p->te - p->ts, ((uint32_t)p->qns), p->qe, 0, p->te - p->ts)) {
                        z->is_match = 1; z->shared_seed = z->non_homopolymer_errors;///for index
                        z->non_homopolymer_errors = 0; z->strong = z->without_large_indel = 0;
                        set_exact_exz(exz, z->x_pos_s, z->x_pos_e + 1, z->y_pos_s, z->y_pos_e + 1); push_alnw(z, exz);
                        nec++;
                    }
                }
            }
        }
        ///debug for memory
        // snprintf(NULL, 0, "dwn::%u\tdcn::%u", (uint32_t)aux_o->w_list.n, (uint32_t)aux_o->w_list.c.n);

        if(on > nec) {
            // gen_ff_hpc(hpz, qu->seq, qu->length, HPC_RR_Q, HPC_CC_Q);
            tot_b = gen_hc_r_alin_nec(ol, cl, rref, qu, tu, exz, aux_o, e_rate, wl, rid, khit, move_gap, buf, chem_drop, align_gap_rate, align_gap_max, sec_aln_win, sec_aln_cov, sec_aln_err_rate, sec_aln_max, kp, NULL/**hpz->a**/);
        }

        // fprintf(stderr, "[M::%s] srt->n::%u, nec::%lu, on::%lu\n", __func__, (uint32_t)srt->n, nec, on);
        ///debug for memory
        // snprintf(NULL, 0, "dwn::%u\tdcn::%u", (uint32_t)aux_o->w_list.n, (uint32_t)aux_o->w_list.c.n);
    }

    return tot_b;

    /**
    if(ol->length > 1) {///for duplicated chains
        overlap_region_sort_y_id(ol->list, ol->length);
        for (k = 1, l = m = 0; k <= ol->length; k++) {
            if(k == ol->length || ol->list[k].y_id != ol->list[l].y_id) {
                // fprintf(stderr, "\n[M::%s::tid->%u] n->%lu\n", __func__, ol->list[l].y_id, k - l);
                mm_k = l;
                if(k - l > 1) {
                    for (s = l, mm_sc = INT32_MIN, mm_k = ((uint64_t)-1); s < k; s++) {
                        z = &(ol->list[s]);
                        plus = z->x_pos_e + 1 - z->x_pos_s; minus = (z->non_homopolymer_errors) * 12;
                        sc = plus - minus;
                        if((sc > mm_sc) || ((sc == mm_sc) && ((ol->list[mm_k].x_pos_e+1-ol->list[mm_k].x_pos_s) < (z->x_pos_e+1-z->x_pos_s)))) {
                            mm_sc = sc; mm_k = s;
                        }
                        // fprintf(stderr, "[M::%s::%c] q::[%u, %u), t::[%u, %u), sc::%ld, err::%u, s::%lu\n", __func__, "+-"[z->y_pos_strand], z->x_pos_s, z->x_pos_e + 1, z->y_pos_s, z->y_pos_e + 1, sc, z->non_homopolymer_errors, s);
                    }
                }
                // fprintf(stderr, "[M::%s::tid->%u] mm_k::%lu\n", __func__, ol->list[l].y_id, mm_k);
                if(mm_k != ((uint64_t)-1)) {
                    if(mm_k != m) {
                        t = ol->list[mm_k];
                        ol->list[mm_k] = ol->list[m];
                        ol->list[m] = t;
                    }
                    m++;
                }
                l = k;
            }
        }
        ol->length = m;
    }
    **/
}

void gen_hc_r_alin_ea_adv(gen_hc_aln_t *ez)
{
    if(ez->ol->length <= 0) return;

    uint64_t k, i, m, *ei, en, *oi, on, tid, trev, nec; overlap_region *z; ma_hit_t *p;
    ez->srt->n = 0;
    for (k = 0; k < ez->in->length; k++) {
        if(ez->in->buffer[k].el) {
            m = ez->in->buffer[k].tn; m <<= 1; m |= ez->in->buffer[k].rev; 
            m <<= 32; m |= k; kv_push(uint64_t, (*(ez->srt)), m);
        }
    }

    if(!(ez->srt->n)) {
        gen_ff_hpc(ez->hpz, ez->qu->seq, ez->qu->length, HPC_RR_Q, HPC_CC_Q);
        gen_hc_r_alin_adv(ez);
    } else {
        ///debug for memory
        // snprintf(NULL, 0, "dwn::%u\tdcn::%u", (uint32_t)aux_o->w_list.n, (uint32_t)aux_o->w_list.c.n);
        kv_resize(uint64_t, *(ez->srt), (ez->srt->n + ez->ol->length));
        ei = ez->srt->a; en = ez->srt->n; oi = ez->srt->a + ez->srt->n; on = ez->ol->length;
        for (k = 0; k < on; k++) {
            z = &(ez->ol->list[k]); z->is_match = z->strong = z->without_large_indel = 0;
            oi[k] = z->y_id; oi[k] <<= 1; oi[k] |= z->y_pos_strand;
            oi[k] <<= 32; oi[k] |= k;
        }

        radix_sort_ec64(ei, ei + en); radix_sort_ec64(oi, oi + on);
        for (k = i = nec = 0; k < on; k++) {
            z = &(ez->ol->list[(uint32_t)oi[k]]); tid = z->y_id; trev = z->y_pos_strand;
            for (; (i < en) && ((ei[i]>>32) < ((tid<<1)|trev)); i++);
            if((i < en) && ((ei[i]>>32) == ((tid<<1)|trev))) {
                p = &(ez->in->buffer[(uint32_t)ei[i]]);
                if((z->x_pos_s == ((uint32_t)p->qns)) && (z->x_pos_e + 1 == p->qe) && 
                            (z->y_pos_s == p->ts) && (z->y_pos_e + 1 == p->te)) {
                    resize_UC_Read(ez->tu, p->te - p->ts); recover_UC_Read_sub_region(ez->tu->seq, p->ts, p->te - p->ts, trev, ez->rref, tid);
                    if(exact_ec_check(ez->qu->seq, ez->qu->length, ez->tu->seq, p->te - p->ts, ((uint32_t)p->qns), p->qe, 0, p->te - p->ts)) {
                        z->is_match = 1; z->shared_seed = z->non_homopolymer_errors;///for index
                        z->non_homopolymer_errors = 0; z->strong = z->without_large_indel = 0;
                        set_exact_exz(ez->exz, z->x_pos_s, z->x_pos_e + 1, z->y_pos_s, z->y_pos_e + 1); push_alnw(z, ez->exz);
                        nec++;
                    }
                }
            }
        }
        ///debug for memory
        // snprintf(NULL, 0, "dwn::%u\tdcn::%u", (uint32_t)aux_o->w_list.n, (uint32_t)aux_o->w_list.c.n);

        if(on > nec) {
            gen_ff_hpc(ez->hpz, ez->qu->seq, ez->qu->length, HPC_RR_Q, HPC_CC_Q);
            gen_hc_r_alin_nec_adv(ez);
        }
        // fprintf(stderr, "[M::%s] srt->n::%u, nec::%lu, on::%lu\n", __func__, (uint32_t)srt->n, nec, on);
        ///debug for memory
        // snprintf(NULL, 0, "dwn::%u\tdcn::%u", (uint32_t)aux_o->w_list.n, (uint32_t)aux_o->w_list.c.n);
    }

    /**
    if(ol->length > 1) {///for duplicated chains
        overlap_region_sort_y_id(ol->list, ol->length);
        for (k = 1, l = m = 0; k <= ol->length; k++) {
            if(k == ol->length || ol->list[k].y_id != ol->list[l].y_id) {
                // fprintf(stderr, "\n[M::%s::tid->%u] n->%lu\n", __func__, ol->list[l].y_id, k - l);
                mm_k = l;
                if(k - l > 1) {
                    for (s = l, mm_sc = INT32_MIN, mm_k = ((uint64_t)-1); s < k; s++) {
                        z = &(ol->list[s]);
                        plus = z->x_pos_e + 1 - z->x_pos_s; minus = (z->non_homopolymer_errors) * 12;
                        sc = plus - minus;
                        if((sc > mm_sc) || ((sc == mm_sc) && ((ol->list[mm_k].x_pos_e+1-ol->list[mm_k].x_pos_s) < (z->x_pos_e+1-z->x_pos_s)))) {
                            mm_sc = sc; mm_k = s;
                        }
                        // fprintf(stderr, "[M::%s::%c] q::[%u, %u), t::[%u, %u), sc::%ld, err::%u, s::%lu\n", __func__, "+-"[z->y_pos_strand], z->x_pos_s, z->x_pos_e + 1, z->y_pos_s, z->y_pos_e + 1, sc, z->non_homopolymer_errors, s);
                    }
                }
                // fprintf(stderr, "[M::%s::tid->%u] mm_k::%lu\n", __func__, ol->list[l].y_id, mm_k);
                if(mm_k != ((uint64_t)-1)) {
                    if(mm_k != m) {
                        t = ol->list[mm_k];
                        ol->list[mm_k] = ol->list[m];
                        ol->list[m] = t;
                    }
                    m++;
                }
                l = k;
            }
        }
        ol->length = m;
    }
    **/
}


void gen_hc_r_alin_ea_adv_flt(gen_hc_aln_t *ez)
{
    if(ez->ol->length <= 0) return;
    // uint32_t dbg_k;
    // for (dbg_k = 0; dbg_k < ez->ol->length; dbg_k++) {
    //     if(ez->ol->list[dbg_k].y_id == 5931) {
    //         pp_chn_a(&(ez->ol->list[dbg_k]), ez->cl, 1);
    //     }
    // }
    uint32_t *a_cu = NULL, *a_ci = NULL, *ocn = NULL, *osc = NULL; uint64_t *idx_cu = NULL, n_cu = 0; ez->v32->n = 0;
    if(ez->ol->length > ez->max_n_chain) {
        gen_chain_clus(ez->ab, ez->ol, ez->cl, ez->v32);///ol->align_length has not been set to 0
    }
    // for (dbg_k = 0; dbg_k < ez->ol->length; dbg_k++) {
    //     if(ez->ol->list[dbg_k].y_id == 5931) {
    //         pp_chn_a(&(ez->ol->list[dbg_k]), ez->cl, 1);
    //     }
    // }
    ggen_chain_clus_0(ez->ol, ez->v32, ez->bp, &a_cu, &a_ci, &ocn, &osc, &idx_cu, &n_cu);
    // for (dbg_k = 0; dbg_k < ez->ol->length; dbg_k++) {
    //     if(ez->ol->list[dbg_k].y_id == 5931) {
    //         pp_chn_a(&(ez->ol->list[dbg_k]), ez->cl, 1);
    //     }
    // }


    uint64_t k, i, m, *ei, en, *oi, on, tid, trev, nec; overlap_region *z; ma_hit_t *p;
    ez->srt->n = 0;
    for (k = 0; k < ez->in->length; k++) {
        if(ez->in->buffer[k].el) {
            m = ez->in->buffer[k].tn; m <<= 1; m |= ez->in->buffer[k].rev; 
            m <<= 32; m |= k; kv_push(uint64_t, (*(ez->srt)), m);
        }
    }

    if(!(ez->srt->n)) {
        gen_ff_hpc(ez->hpz, ez->qu->seq, ez->qu->length, HPC_RR_Q, HPC_CC_Q);
        gen_hc_r_alin_adv_adp_smp(ez, a_cu, a_ci, ocn, osc, idx_cu, n_cu, 1);
        // gen_hc_r_alin_adv(ez);
    } else {
        ///debug for memory
        // snprintf(NULL, 0, "dwn::%u\tdcn::%u", (uint32_t)aux_o->w_list.n, (uint32_t)aux_o->w_list.c.n);
        kv_resize(uint64_t, *(ez->srt), (ez->srt->n + ez->ol->length));
        ei = ez->srt->a; en = ez->srt->n; oi = ez->srt->a + ez->srt->n; on = ez->ol->length;
        for (k = 0; k < on; k++) {
            z = &(ez->ol->list[k]); z->is_match = z->strong = z->without_large_indel = 0;
            oi[k] = z->y_id; oi[k] <<= 1; oi[k] |= z->y_pos_strand;
            oi[k] <<= 32; oi[k] |= k;
        }

        radix_sort_ec64(ei, ei + en); radix_sort_ec64(oi, oi + on);
        for (k = i = nec = 0; k < on; k++) {
            z = &(ez->ol->list[(uint32_t)oi[k]]); tid = z->y_id; trev = z->y_pos_strand;
            for (; (i < en) && ((ei[i]>>32) < ((tid<<1)|trev)); i++);
            if((i < en) && ((ei[i]>>32) == ((tid<<1)|trev))) {
                p = &(ez->in->buffer[(uint32_t)ei[i]]);
                if((z->x_pos_s == ((uint32_t)p->qns)) && (z->x_pos_e + 1 == p->qe) && 
                            (z->y_pos_s == p->ts) && (z->y_pos_e + 1 == p->te)) {
                    resize_UC_Read(ez->tu, p->te - p->ts); recover_UC_Read_sub_region(ez->tu->seq, p->ts, p->te - p->ts, trev, ez->rref, tid);
                    if(exact_ec_check(ez->qu->seq, ez->qu->length, ez->tu->seq, p->te - p->ts, ((uint32_t)p->qns), p->qe, 0, p->te - p->ts)) {
                        z->is_match = 1; z->shared_seed = z->non_homopolymer_errors;///for index
                        z->non_homopolymer_errors = 0; z->strong = z->without_large_indel = 0;
                        set_exact_exz(ez->exz, z->x_pos_s, z->x_pos_e + 1, z->y_pos_s, z->y_pos_e + 1); push_alnw(z, ez->exz);
                        nec++;
                    }
                }
            }
        }
        ///debug for memory
        // snprintf(NULL, 0, "dwn::%u\tdcn::%u", (uint32_t)aux_o->w_list.n, (uint32_t)aux_o->w_list.c.n);

        if(on > nec) {
            gen_ff_hpc(ez->hpz, ez->qu->seq, ez->qu->length, HPC_RR_Q, HPC_CC_Q);
            gen_hc_r_alin_adv_adp_smp(ez, a_cu, a_ci, ocn, osc, idx_cu, n_cu, 0);
            // gen_hc_r_alin_nec_adv(ez);
        }
        // fprintf(stderr, "[M::%s] srt->n::%u, nec::%lu, on::%lu\n", __func__, (uint32_t)srt->n, nec, on);
        ///debug for memory
        // snprintf(NULL, 0, "dwn::%u\tdcn::%u", (uint32_t)aux_o->w_list.n, (uint32_t)aux_o->w_list.c.n);
    }
}


void gen_hc_r_alin_ea_adv_flt_mmp(gen_hc_aln_t *ez)
{
    if(ez->ol->length <= 0) return;

    uint64_t i, k, m, *ei, en, *oi, on, tid, trev, nec; overlap_region *z; ma_hit_t *p;
    ez->v32->n = ez->ol->length<<1; kv_resize(uint32_t, *(ez->v32), ez->v32->n); 
    for (i = 0; i < ez->ol->length; i++) {
        ez->v32->a[i] = ez->ol->list[i].align_length;
        ez->v32->a[i+ez->ol->length] = ez->ol->list[i].shared_seed;
        ez->ol->list[i].align_length = 0;
    }

    // uint64_t k, i, m, *ei, en, *oi, on, tid, trev, nec; overlap_region *z; ma_hit_t *p;
    for (k = ez->srt->n = 0; k < ez->in->length; k++) {
        if(ez->in->buffer[k].el) {
            m = ez->in->buffer[k].tn; m <<= 1; m |= ez->in->buffer[k].rev; 
            m <<= 32; m |= k; kv_push(uint64_t, (*(ez->srt)), m);
        }
    }

    if(!(ez->srt->n)) {
        // gen_hc_r_alin_adv_adp_smp(ez, a_cu, a_ci, ocn, osc, idx_cu, n_cu, 1);
        gen_hc_r_alin_adv_adp_smp_1(ez, 1);
    } else {
        ///debug for memory
        // snprintf(NULL, 0, "dwn::%u\tdcn::%u", (uint32_t)aux_o->w_list.n, (uint32_t)aux_o->w_list.c.n);
        kv_resize(uint64_t, *(ez->srt), (ez->srt->n + ez->ol->length));
        ei = ez->srt->a; en = ez->srt->n; oi = ez->srt->a + ez->srt->n; on = ez->ol->length;
        for (k = 0; k < on; k++) {
            z = &(ez->ol->list[k]); z->is_match = z->strong = z->without_large_indel = 0;
            oi[k] = z->y_id; oi[k] <<= 1; oi[k] |= z->y_pos_strand;
            oi[k] <<= 32; oi[k] |= k;
        }

        radix_sort_ec64(ei, ei + en); radix_sort_ec64(oi, oi + on);
        for (k = i = nec = 0; k < on; k++) {
            z = &(ez->ol->list[(uint32_t)oi[k]]); tid = z->y_id; trev = z->y_pos_strand;
            for (; (i < en) && ((ei[i]>>32) < ((tid<<1)|trev)); i++);
            if((i < en) && ((ei[i]>>32) == ((tid<<1)|trev))) {
                p = &(ez->in->buffer[(uint32_t)ei[i]]);
                if((z->x_pos_s == ((uint32_t)p->qns)) && (z->x_pos_e + 1 == p->qe) && 
                            (z->y_pos_s == p->ts) && (z->y_pos_e + 1 == p->te)) {
                    resize_UC_Read(ez->tu, p->te - p->ts); recover_UC_Read_sub_region(ez->tu->seq, p->ts, p->te - p->ts, trev, ez->rref, tid);
                    if(exact_ec_check(ez->qu->seq, ez->qu->length, ez->tu->seq, p->te - p->ts, ((uint32_t)p->qns), p->qe, 0, p->te - p->ts)) {
                        z->is_match = 1; z->shared_seed = z->non_homopolymer_errors;///for index
                        z->non_homopolymer_errors = 0; z->strong = z->without_large_indel = 0;
                        set_exact_exz(ez->exz, z->x_pos_s, z->x_pos_e + 1, z->y_pos_s, z->y_pos_e + 1); push_alnw(z, ez->exz);
                        nec++;
                    }
                }
            }
        }
        ///debug for memory
        // snprintf(NULL, 0, "dwn::%u\tdcn::%u", (uint32_t)aux_o->w_list.n, (uint32_t)aux_o->w_list.c.n);

        if(on > nec) {
            // gen_hc_r_alin_adv_adp_smp(ez, a_cu, a_ci, ocn, osc, idx_cu, n_cu, 0);
            gen_hc_r_alin_adv_adp_smp_1(ez, 0);
        }
        // fprintf(stderr, "[M::%s] srt->n::%u, nec::%lu, on::%lu\n", __func__, (uint32_t)srt->n, nec, on);
        ///debug for memory
        // snprintf(NULL, 0, "dwn::%u\tdcn::%u", (uint32_t)aux_o->w_list.n, (uint32_t)aux_o->w_list.c.n);
    }
}



void prt_ovlp_sam_0(char *cm, FILE *fp, char *ref_id, int32_t ref_id_n, char *qry_id, int32_t qry_id_n, char *qry_seq, uint64_t qry_seq_n, uint64_t rs, uint64_t re, uint64_t qs, uint64_t qe, uint64_t flag, uint64_t err0, bit_extz_t *ez)
{
    uint64_t ci = 0, err1 = 0; uint16_t c; uint32_t cl, cl0 = 0; char c0 = (char)-1;
    fprintf(fp, "%.*s\t%lu\t%.*s\t%lu\t60\t", qry_id_n, qry_id, flag, ref_id_n, ref_id, rs + 1);

    if(qs) fprintf(fp, "%luS", qs);
    while (ci < ez->cigar.n) {
        ci = pop_trace(&(ez->cigar), ci, &c, &cl);
        if(c0 == cm[c]) {
            cl0 += cl;
        } else {
            if(c0 != ((char)-1)) {
                fprintf(fp, "%u%c", cl0, c0);
            }
            cl0 = cl; c0 = cm[c];
        }
        // fprintf(fp, "%u%c", cl, cm[c]);
        if(c != 0) err1 += cl;
    }
    if(cl0) fprintf(fp, "%u%c", cl0, c0);
    if(qry_seq_n > qe) fprintf(fp, "%luS", qry_seq_n - qe);
    fprintf(fp, "\t*\t0\t0\t%.*s\t", (int32_t)qry_seq_n, qry_seq);
    for (ci = 0; ci < qry_seq_n; ci++) fprintf(fp, "~");
    assert(err0 == err1);
    fprintf(fp, "\tNM:i:%lu\n", err0);
}


void prt_ovlp_sam(overlap_region_alloc* ol, UC_Read* tu, char *ref_seq, int32_t ref_seq_n)
{
    int64_t on = ol->length, k, i, zwn; overlap_region *z; bit_extz_t ez;
    char *qry = NULL, *ref = Get_NAME(R_INF, ol->list[0].x_id); 
    uint64_t qry_n = 0, ref_n = Get_NAME_LENGTH(R_INF, ol->list[0].x_id), qid, rev;
    char cm[4]; cm[0] = 'M'; cm[1] = 'M'; cm[2] = 'I'; cm[3] = 'D';  
    FILE *fp = fopen("aln.sam", "w");
    fprintf(fp, "@HD\tVN:1.6\tSO:unknown\n");
    fprintf(fp, "@SQ\tSN:%.*s\tLN:%lu\n", (int32_t)ref_n, ref, Get_READ_LENGTH(R_INF, ol->list[0].x_id));
    for (k = 0; k < on; k++) {
        z = &(ol->list[k]); zwn = z->w_list.n; 
        if(!zwn) continue; 
        qid = ol->list[k].y_id; 
        if(z->y_pos_strand) {
            recover_UC_Read_RC(tu, &R_INF, qid); rev = 16;
        } else {
            recover_UC_Read(tu, &R_INF, qid); rev = 0;
        }
        for (i = 0; i < zwn; i++) {
            if(is_ualn_win(z->w_list.a[i])) continue;
            qry_n = Get_NAME_LENGTH(R_INF, qid); 
            qry = Get_NAME(R_INF, qid);
            set_bit_extz_t(ez, (*z), i);
            
            prt_ovlp_sam_0(cm, fp, ref, ref_n, qry, qry_n, tu->seq, tu->length, z->w_list.a[i].x_start, z->w_list.a[i].x_end + 1, z->w_list.a[i].y_start, z->w_list.a[i].y_end + 1, rev, z->w_list.a[i].error, &ez);
        }
    }
    fclose(fp);

    fp = fopen("ref.fa", "w");
    fprintf(fp, ">%.*s\n", (int32_t)ref_n, ref);
    fprintf(fp, "%.*s\n", ref_seq_n, ref_seq);
    fclose(fp);
}

void stderr_phase_ovlp(overlap_region_alloc* ol)
{
    int64_t on = ol->length, k; overlap_region *z;
    if(!on) return;
    uint64_t qry_n = 0, rid, ref_n, qid;
    rid = ol->list[0].x_id; ref_n = Get_NAME_LENGTH(R_INF, rid);
    
    for (k = 0; k < on; k++) {
        z = &(ol->list[k]); qid = ol->list[k].y_id; 
        qry_n = Get_NAME_LENGTH(R_INF, qid); 

        fprintf(stderr, "%.*s(qid::%lu)\tql::%lu\tq::[%u,\t%u)\t%c\t%.*s(tid::%lu)\ttl::%lu\tt::[%u,\t%u)\ttrans::%u\terr::%u\n", 
        (int32_t)Get_NAME_LENGTH(R_INF, rid), Get_NAME(R_INF, rid), rid, ref_n, z->x_pos_s, z->x_pos_e + 1, "+-"[z->y_pos_strand], 
        (int32_t)Get_NAME_LENGTH(R_INF, qid), Get_NAME(R_INF, qid), qid, qry_n, z->y_pos_s, z->y_pos_e + 1, ((z->is_match==1)?(0):(1)), z->non_homopolymer_errors);
    }
}


void stderr_phase_ovlp_buf(uint32_t srid, overlap_region_alloc* ol, Candidates_list *cl, uint32_t *ocn, uint32_t *osc, asgchr_v *ou, dbg_cnt_ss *mz, const char *cmd)
{
    int64_t on = ol->length, k, t, prt_len; overlap_region *z;
    if(!on) return;
    uint64_t qry_n = 0, rid, ref_n, qid, sc, chn; int32_t err, mm;
    rid = ol->list[0].x_id; ref_n = Get_READ_LENGTH(R_INF, rid);


    for (k = qry_n = 0; k < on; k++) {
        z = &(ol->list[k]); qid = ol->list[k].y_id; 

        if(ocn && osc) {
            sc = osc[k]; chn = ocn[k]; err = ((z->non_homopolymer_errors >= (UINT32_MAX-1))?(-1):(z->non_homopolymer_errors));
            mm = z->is_match; if((mm == 0) && (z->non_homopolymer_errors == UINT32_MAX)) mm = -1;///skipped
        } else {
            sc = z->shared_seed;
            for (t = z->non_homopolymer_errors; (t < cl->length) && (cl->list[t].readID == cl->list[z->non_homopolymer_errors].readID); t++);
            chn = t - z->non_homopolymer_errors; assert(chn);
            err = -1;
            mm = -2;///not base alignment performed
        }
        if(mm == -1) continue;
        qry_n += z->x_pos_e + 1 - z->x_pos_s;
    }
    
    ///label
    // fprintf(fn, "rid::%lu\ttot_bs::%lu\taln_bs::%lu\tchn_tm::%f\taln_tm::%f\tphs_tm::%f\tcns_tm::%f\n", k, p[k].fbs, p[k].faln, p[k].chn_tm, p[k].aln_tm, p[k].phs_tm, p[k].cns_tm);
    prt_len = snprintf(NULL, 0, "(%s)srid::%u\trid::%lu\tcov_bs::%lu\ttot_bs::%lu\taln_bs::%lu\tchn_tm::%f\taln_tm::%f\tphs_tm::%f\tcns_tm::%f\n", cmd, srid, rid,
        qry_n, mz->fbs, mz->faln, mz->chn_tm, mz->aln_tm, mz->phs_tm, mz->cns_tm);///snprintf exclude \0
    ou->n += prt_len; if((ou->n + 1) > ou->m) kv_resize(char, *ou, (ou->n + 1));
    snprintf(ou->a + ou->n - prt_len, prt_len + 1, "(%s)srid::%u\trid::%lu\tcov_bs::%lu\ttot_bs::%lu\taln_bs::%lu\tchn_tm::%f\taln_tm::%f\tphs_tm::%f\tcns_tm::%f\n", cmd, srid, rid,
        qry_n, mz->fbs, mz->faln, mz->chn_tm, mz->aln_tm, mz->phs_tm, mz->cns_tm);


    


    for (k = 0; k < on; k++) {
        z = &(ol->list[k]); qid = ol->list[k].y_id; 
        qry_n = Get_READ_LENGTH(R_INF, qid); 

        if(ocn && osc) {
            sc = osc[k]; chn = ocn[k]; err = ((z->non_homopolymer_errors >= (UINT32_MAX-1))?(-1):(z->non_homopolymer_errors));
            mm = z->is_match; if((mm == 0) && (z->non_homopolymer_errors == UINT32_MAX)) mm = -1;///skipped
        } else {
            sc = z->shared_seed;
            for (t = z->non_homopolymer_errors; (t < cl->length) && (cl->list[t].readID == cl->list[z->non_homopolymer_errors].readID); t++);
            chn = t - z->non_homopolymer_errors; assert(chn);
            err = -1;
            mm = -2;///not base alignment performed
        }
        if(mm == -1) continue;

        ///fprintf(fn, "rid::%lu\ttot_bs::%lu\taln_bs::%lu\tchn_tm::%f\taln_tm::%f\tphs_tm::%f\tcns_tm::%f\n", k, p[k].fbs, p[k].faln, p[k].chn_tm, p[k].aln_tm, p[k].phs_tm, p[k].cns_tm);
        prt_len = snprintf(NULL, 0, "%.*s(qid::%lu)\tql::%lu\tq::[%u,%u)\t%c\t%.*s(tid::%lu)\ttl::%lu\tt::[%u,%u)\tmatch::%d\terr::%d\tchn::%lu\tosc::%lu\n", 
        (int32_t)Get_NAME_LENGTH(R_INF, rid), Get_NAME(R_INF, rid), rid, ref_n, z->x_pos_s, z->x_pos_e + 1, "+-"[z->y_pos_strand], 
        (int32_t)Get_NAME_LENGTH(R_INF, qid), Get_NAME(R_INF, qid), qid, qry_n, z->y_pos_s, z->y_pos_e + 1, mm, err, chn, sc);
        ou->n += prt_len; if((ou->n + 1) > ou->m) kv_resize(char, *ou, (ou->n + 1));
        snprintf(ou->a + ou->n - prt_len, prt_len + 1, "%.*s(qid::%lu)\tql::%lu\tq::[%u,%u)\t%c\t%.*s(tid::%lu)\ttl::%lu\tt::[%u,%u)\tmatch::%d\terr::%d\tchn::%lu\tosc::%lu\n", 
        (int32_t)Get_NAME_LENGTH(R_INF, rid), Get_NAME(R_INF, rid), rid, ref_n, z->x_pos_s, z->x_pos_e + 1, "+-"[z->y_pos_strand], 
        (int32_t)Get_NAME_LENGTH(R_INF, qid), Get_NAME(R_INF, qid), qid, qry_n, z->y_pos_s, z->y_pos_e + 1, mm, err, chn, sc);
    }
    
}

void dedup_chains(overlap_region_alloc* ol)
{
    uint64_t k, l, s, m, mm_k, mm_m, sf; int64_t sc, mm_sc, plus, minus; overlap_region *z, t; 
    if(ol->length > 1) {///for duplicated chains
        overlap_region_sort_y_id(ol->list, ol->length);
        for (k = 1, l = m = 0; k <= ol->length; k++) {
            if(k == ol->length || ol->list[k].y_id != ol->list[l].y_id) {
                // fprintf(stderr, "\n[M::%s::tid->%u] n->%lu\n", __func__, ol->list[l].y_id, k - l);
                mm_k = l;
                if(k - l > 1) {
                    for (s = l, mm_sc = INT32_MIN, mm_k = ((uint64_t)-1), mm_m = 3; s < k; s++) {
                        z = &(ol->list[s]);
                        plus = z->x_pos_e + 1 - z->x_pos_s; minus = (z->non_homopolymer_errors) * 12;
                        sc = plus - minus; 
                        
                        sf = 0;
                        if(z->is_match < mm_m) {
                            sf = 1;
                        } else if(z->is_match == mm_m) {
                            if(sc > mm_sc) {
                                sf = 1;
                            } else if((sc == mm_sc) && ((z->x_pos_e+1-z->x_pos_s) > (ol->list[mm_k].x_pos_e+1-ol->list[mm_k].x_pos_s))) {
                                sf = 1;
                            }
                        }
                        if(sf) {
                            mm_sc = sc; mm_k = s; mm_m = z->is_match;
                        }
                        
                        // fprintf(stderr, "[M::%s::%c] q::[%u, %u), t::[%u, %u), sc::%ld, err::%u, mm::%u, s::%lu\n", __func__, "+-"[z->y_pos_strand], z->x_pos_s, z->x_pos_e + 1, z->y_pos_s, z->y_pos_e + 1, sc, z->non_homopolymer_errors, z->is_match, s);
                    }
                }
                // fprintf(stderr, "[M::%s::tid->%u] mm_k::%lu\n", __func__, ol->list[l].y_id, mm_k);
                if(mm_k != ((uint64_t)-1)) {
                    if(mm_k != m) {
                        t = ol->list[mm_k];
                        ol->list[mm_k] = ol->list[m];
                        ol->list[m] = t;
                    }
                    m++;
                }
                l = k;
            }
        }
        ol->length = m;
    }
}

void debug_retrive_bqual(asg8_v *vq, asg8_v *vt, uint64_t id, uint64_t rn)
{
    uint64_t k, n, z[2], s, e, rev;
    retrive_bqual(vq, NULL, id, -1, -1, 0, sc_bn); n = vq->n;
    retrive_bqual(vt, NULL, id, -1, -1, 1, sc_bn);
    assert(vq->n == vt->n);
    for (k = 0; k < vq->n && vq->a[k] == vt->a[vt->n - k - 1]; k++);
    // if((k == vq->n)) {
    //     fprintf(stderr, "[M::%s] id::%lu, k::%lu, n::%lu\n", __func__, id, k, ((uint64_t)vq->n));
    // }
    assert(k == vq->n);

    // if(id == 0) {
    //     s = 21519; e = 22332; rev = 0;
    //     retrive_bqual(vt, NULL, id, s, e, rev, sc_bn);
    //     if(memcmp(vq->a + s, vt->a, e - s)) {
    //         fprintf(stderr, "+[M::%s] id::%lu, t::[%lu, %lu), rev::%lu\n", __func__, id, s, e, rev);
    //         exit(1);
    //     }

    // }
    // return;

    for (k = 0, rev = 0; k < rn; k++) {
        z[0] = rand()%(n + 1); 
        z[1] = rand()%(n + 1); 
        if(z[0] == z[1]) continue;
        s = MIN(z[0], z[1]); e = MAX(z[0], z[1]);
        retrive_bqual(vt, NULL, id, s, e, rev, sc_bn);
        if(memcmp(vq->a + s, vt->a, e - s)) {
            fprintf(stderr, "[M::%s] id::%lu, t::[%lu, %lu), rev::%lu\n", __func__, id, s, e, rev);
            exit(1);
        }
    }
    

    retrive_bqual(vq, NULL, id, -1, -1, 1, sc_bn);
    for (k = 0, rev = 1; k < rn; k++) {
        z[0] = rand()%(n + 1); 
        z[1] = rand()%(n + 1); 
        if(z[0] == z[1]) continue;
        s = MIN(z[0], z[1]); e = MAX(z[0], z[1]);
        retrive_bqual(vt, NULL, id, s, e, rev, sc_bn);
        if(memcmp(vq->a + s, vt->a, e - s)) {
            fprintf(stderr, "[M::%s] id::%lu, t::[%lu, %lu), rev::%lu\n", __func__, id, s, e, rev);
            exit(1);
        }
    }
}

uint32_t is_uncorrected_read(overlap_region_alloc* ov, asg64_v *idx, int64_t len, int64_t min_len)
{
    uint64_t k, s, e; int64_t dp, old_dp, st = 0, ed;
    for (k = idx->n = 0; k < ov->length; k++) {
        s = ov->list[k].x_pos_s; e = ov->list[k].x_pos_e + 1;
        kv_push(uint64_t, (*idx), (s<<1));
        kv_push(uint64_t, (*idx), (e<<1)|1);
    }

    radix_sort_ec64(idx->a, idx->a + idx->n);
    for (k = 0, dp = 0, st = ed = 0; k < idx->n; ++k) {
        old_dp = dp;
        ///if a[j] is qe
        if (idx->a[k]&1) --dp;
        else ++dp;

        ed = idx->a[k]>>1;
        if(ed > st) {
            if(old_dp == 0) {
                if((ed - st) >= min_len) return 1;
            }
        }
        st = ed;
    }


    ed = len; old_dp = dp;
    if(ed > st) {
        if(old_dp == 0) {
            if((ed - st) >= min_len) return 1;
            if((ed - st) >= len) return 1;
        }
    }
    
    return 0;
}

uint32_t is_chemical_r_qual(overlap_region_alloc *ov, asg64_v *idx, int64_t len, int64_t cov, int64_t frank_len, asg8_v *qv, uint64_t rid)
{
    uint64_t k, s, e; int64_t dp, old_dp, st = 0, ed, s0, s1, e0, e1, rr, qk;
    if((frank_len) > (len *0.01)) frank_len = len *0.01;
    for (k = idx->n = 0; k < ov->length; k++) {
        s = ov->list[k].x_pos_s; e = ov->list[k].x_pos_e + 1;
        kv_push(uint64_t, (*idx), (s<<1));
        kv_push(uint64_t, (*idx), (e<<1)|1);
        // fprintf(stderr, "[M::%s]\trid::%lu\ts::%lu\te::%lu\n", __func__, rid, s, e);
    }

    radix_sort_ec64(idx->a, idx->a + idx->n); s0 = s1 = e0 = e1 = rr = -1;
    for (k = 0, dp = 0, st = ed = 0; k < idx->n; ++k) {
        old_dp = dp;
        ///if a[j] is qe
        if (idx->a[k]&1) --dp;
        else ++dp;

        ed = idx->a[k]>>1;
        if(ed > st) {
            if(old_dp <= cov) {
                rr = 1;
            } else {
                if(s0 < 0) {
                    s0 = st; s1 = ed;
                }
                e0 = st; e1 = ed;
            }
        }
        st = ed;
    }


    ed = len; old_dp = dp;
    if(ed > st) {
        if(old_dp <= cov) {
            rr = 1;
        } else {
            if(s0 < 0) {
                s0 = st; s1 = ed;
            }
            e0 = st; e1 = ed;
        }
    }


    if((s0 != e0) && (s1 != e1) && (s0 <= frank_len) && ((len - e1) <= frank_len) && (rr > 0)) {
        for (k = 0, dp = 0, st = ed = 0; k < idx->n; ++k) {
            old_dp = dp;
            ///if a[j] is qe
            if (idx->a[k]&1) --dp;
            else ++dp;

            ed = idx->a[k]>>1;
            if(ed > st) {
                if((old_dp <= cov) && (st >= s0) && (ed <= e1)) {
                    retrive_bqual(qv, NULL, rid, -1, -1, 0, sc_bn); 
                    fprintf(stderr, "[M::%s]\tlf::[%ld,%ld)\trt::[%ld,%ld)\tmd::[%ld,%ld)\tcov::%ld\n", __func__, s0, s1, e0, e1, st, ed, old_dp);
                    for (qk = st; qk < ed; qk++) fprintf(stderr, "%u", qv->a[qk]);
                    fprintf(stderr, "\n");
                    return 1;
                }
            }
            st = ed;
        }


        ed = len; old_dp = dp;
        if(ed > st) {
            if((old_dp <= cov) && (st >= s0) && (ed <= e1)) {
                retrive_bqual(qv, NULL, rid, -1, -1, 0, sc_bn);
                fprintf(stderr, "[M::%s]\tlf::[%ld,%ld)\trt::[%ld,%ld)\tmd::[%ld,%ld)\tcov::%ld\n", __func__, s0, s1, e0, e1, st, ed, old_dp);
                for (qk = st; qk < ed; qk++) fprintf(stderr, "%u", qv->a[qk]);
                fprintf(stderr, "\n");
                return 1;
            }
        }
    }


    // for (k = 0, dp = 0, st = ed = 0; k < idx->n; ++k) {
    //     old_dp = dp;
    //     ///if a[j] is qe
    //     if (idx->a[k]&1) --dp;
    //     else ++dp;

    //     ed = idx->a[k]>>1;
    //     if(ed > st) {
    //         if((old_dp <= cov)) {
    //             retrive_bqual(qv, NULL, rid, -1, -1, 0, sc_bn); 
    //             fprintf(stderr, "[M::%s]\tlf::[%ld,%ld)\trt::[%ld,%ld)\tmd::[%ld,%ld)\tcov::%ld\n", __func__, s0, s1, e0, e1, st, ed, old_dp);
    //             for (qk = st; qk < ed; qk++) fprintf(stderr, "%u", qv->a[qk]);
    //             fprintf(stderr, "\n");
    //             return 1;
    //         }
    //     }
    //     st = ed;
    // }


    // ed = len; old_dp = dp;
    // if(ed > st) {
    //     if((old_dp <= cov)) {
    //         retrive_bqual(qv, NULL, rid, -1, -1, 0, sc_bn);
    //         fprintf(stderr, "[M::%s]\tlf::[%ld,%ld)\trt::[%ld,%ld)\tmd::[%ld,%ld)\tcov::%ld\n", __func__, s0, s1, e0, e1, st, ed, old_dp);
    //         for (qk = st; qk < ed; qk++) fprintf(stderr, "%u", qv->a[qk]);
    //         fprintf(stderr, "\n");
    //         return 1;
    //     }
    // }
    
    return 0;
}

void init_gen_hc_aln_t(gen_hc_aln_t *ez, overlap_region_alloc *ol, Candidates_list *cl, All_reads *rref, UC_Read *qu, UC_Read *tu, bit_extz_t *exz, overlap_region *aux_o, overlap_region *rse_o, 
    asg8_v *hpz, double e_rate_l, double e_rate_h, int64_t wl_l, int64_t wl_h, int64_t rid, int64_t khit, int64_t move_gap, asg16_v *buf, asg64_v *srt, ma_hit_t_alloc *in,
    int8_t chem_drop_l, int8_t chem_drop_h, double align_gap_rate_l, double align_gap_rate_h, int64_t align_gap_max_l, int64_t align_gap_max_h,
    uint64_t sec_aln_win, uint64_t sec_aln_cov, double sec_aln_err_rate, double sec_aln_max, asg64_v *kp, asg32_v *v32, asg64_v *bp, ha_abuf_t *ab, uint64_t max_n_chain, uint64_t max_n_chain_f, uint64_t chain_cutoff, 
    uint64_t ave_cov_min, uint64_t ocw, uint64_t t_cut, uint64_t hom_cov_a)
{
    ez->ol = ol;
    ez->cl = cl;
    ez->rref = rref;
    ez->qu = qu;
    ez->tu = tu;
    ez->exz = exz;
    ez->aux_o = aux_o;
    ez->rse_o = rse_o;
    ez->e_rate[0] = e_rate_l;
    ez->e_rate[1] = e_rate_h;
    ez->wl[0] = wl_l;
    ez->wl[1] = wl_h;
    ez->rid = rid;
    ez->khit = khit;
    ez->move_gap = move_gap;
    ez->buf = buf; 
    ez->srt = srt;
    ez->in = in;

    ez->chem_drop[0] = chem_drop_l;
    ez->chem_drop[1] = chem_drop_h;
    ez->align_gap_rate[0] = align_gap_rate_l;
    ez->align_gap_rate[1] = align_gap_rate_h;
    ez->align_gap_max[0] = align_gap_max_l;
    ez->align_gap_max[1] = align_gap_max_h;

    ez->sec_aln_win = sec_aln_win;
    ez->sec_aln_cov = sec_aln_cov;
    ez->sec_aln_err_rate = sec_aln_err_rate;
    ez->sec_aln_max = sec_aln_max;
    ez->kp = kp;

    ez->v32 = v32;
    ez->bp = bp;
    ez->ab = ab;
    ez->max_n_chain = max_n_chain;
    ez->max_n_chain_f = max_n_chain_f;
    ez->chain_cutoff = chain_cutoff;
    ez->ave_cov_min = ave_cov_min;
    ez->ocw = ocw;

    ez->t_cut = t_cut;
    ez->hpz = hpz;

    ez->hom_cov_a = hom_cov_a;
}

uint64_t cal_aln_bs(overlap_region_alloc *ol)
{
    uint64_t tot = 0, k;
    for (k = 0; k < ol->length; k++) {
        tot += ol->list[k].x_pos_e + 1 - ol->list[k].x_pos_s;
    }
    return tot;
}

static void worker_init_ec_step(void *data, long i, int tid)
{
	scc.a[i].n = 0; scc.f[i] = 0; scc.er[i] = UINT16_MAX;
}

#define set_ec_cov(het_i, hom_i, het_s, n_hap, het_r, hom_r) do {\
    (het_r) = (het_i); (hom_r) = (hom_i);\
    if((het_s) >= 0) (het_r) = (het_s);\
    if(((het_r) < 0) || ((het_r) > ((hom_r)/(n_hap)))) {(het_r) = (hom_r)/(n_hap);}\
} while (0)



static void worker_hap_ec(void *data, long i, int tid)
{
	ec_ovec_buf_t0 *b = &(((ec_ovec_buf_t*)data)->a[tid]);
    uint32_t high_occ = asm_opt.hom_cov * (2.0 - HA_KMER_GOOD_RATIO);
    uint32_t low_occ = asm_opt.hom_cov * HA_KMER_GOOD_RATIO; int64_t het_a, hom_a; ///gen_hc_aln_t ez; 
    overlap_region *aux_o = NULL/**, *rse_o = NULL**/; asg64_v buf0; uint32_t qlen = 0, qw = 0; uint64_t tot_b = 0; double tt0 = 0, tt1 = 0;
    b->v8q.n = b->v8t.n = 0; set_ec_cov(asm_opt.het_cov, asm_opt.hom_cov, asm_opt.het_cov_set, asm_opt.polyploidy, het_a, hom_a);

    // if((i != 733166) && (i != 858708) && (i != 858732) && (i != 859819) && (i != 859899) && (i != 863486) && (i != 872165) && (i != 899887) && (i != 902298) && 
    //    (i != 906808) && (i != 946173) && (i != 952685) && (i != 983977) && (i != 1000227) && (i != 1011228) && (i != 1042858) && (i != 1045860) && (i != 1118558) && 
    //    (i != 1143886) && (i != 1155956) && (i != 1159490) && (i != 1179151) && (i != 1180199) && (i != 1230524) && (i != 1232338) && (i != 1244031) && (i != 1268467) && 
    //    (i != 1288505) && (i != 1311559) && (i != 1311639) && (i != 1321349) && (i != 1324262) && (i != 1342272) && (i != 1355560) && (i != 1384437) && (i != 1397085) && 
    //    (i != 1413259) && (i != 1439382) && (i != 1450866) && (i != 1456019) && (i != 1456201) && (i != 1456432) && (i != 1456601) && (i != 1456762) && (i != 1456842) && 
    //    (i != 1456856) && (i != 1456902) && (i != 1457036) && (i != 1457092) && (i != 1457183) && (i != 1457207) && (i != 1458806) && (i != 1458843) && (i != 1459234) && 
    //    (i != 1460641) && (i != 1460721) && (i != 1462541) && (i != 1463555) && (i != 1464608) && (i != 1528392) && (i != 1561025) && (i != 1564625) && (i != 1605328) && (i != 1721621)){
    //     return;
    // }
    // if((i != 733166) && (i != 858708) && (i != 858796) && (i != 859819) && (i != 859899) && (i != 863486) && (i != 872165) && (i != 899887) && (i != 902298) && 
    //    (i != 906808) && (i != 946173) && (i != 952685) && (i != 983977) && (i != 1000227) && (i != 1011228) && (i != 1042858) && (i != 1045860) && (i != 1118558) && 
    //    (i != 1143886) && (i != 1155956) && (i != 1159490) && (i != 1179151) && (i != 1180199) && (i != 1230524) && (i != 1232338) && (i != 1244031) && (i != 1268467) && 
    //    (i != 1288505) && (i != 1311559) && (i != 1311639) && (i != 1321349) && (i != 1324262) && (i != 1342272) && (i != 1355560) && (i != 1384437) && (i != 1397085) && 
    //    (i != 1413323) && (i != 1439382) && (i != 1450866) && (i != 1456019) && (i != 1456201) && (i != 1456432) && (i != 1456601) && (i != 1456762) && (i != 1456842) && 
    //    (i != 1456856) && (i != 1456902) && (i != 1457036) && (i != 1457092) && (i != 1457183) && (i != 1457207) && (i != 1458806) && (i != 1458843) && (i != 1459234) && 
    //    (i != 1460641) && (i != 1460721) && (i != 1462541) && (i != 1463555) && (i != 1464608) && (i != 1528392) && (i != 1561025) && (i != 1564625) && (i != 1605328) && (i != 1721621)) {
    //     return;
    // }

    // if(i != 0) return;

    // fprintf(stderr, "+[M::%s]\trid::%ld\t%.*s\n", __func__, i, (int)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i));
    // 25e396cf-a58d-4f67-a391-33f36fb3891f	0	48396	id:i:1477155
    // 8583bdfa-f38f-4976-be74-2357e1905852	0	43608	id:i:2857459

    // if (memcmp("9edb4aa1-3a56-40dc-b687-77e4176d1053", Get_NAME((R_INF), i), Get_NAME_LENGTH((R_INF),i)) == 0 || 
    //     memcmp("25e30873-9737-4e6d-bdb6-a504a26ef3de", Get_NAME((R_INF), i), Get_NAME_LENGTH((R_INF),i)) == 0 || 
    //     memcmp("19699b82-2883-43e1-a11e-ec0c95eaccd4", Get_NAME((R_INF), i), Get_NAME_LENGTH((R_INF),i)) == 0) {
    //     fprintf(stderr, "\n+[M::%s]\trid-target::%ld\t%.*s\n", __func__, i, (int)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i));
    // }
    


    // if(i != 3621590) return;///need to dig into later

    // if(i != 1461185) return;

    // if(i != 27542) return;
    // if(i != 25765) return;
    // if(i != 898) return;
    // if(i != 6843) return;
    // if(i != 14627) return;

    // if(i != 7148) return;

    // if(i != 339646) return;
    // if(i!=854835) return;
    // if(i != 1) return;
    
    
    // if(i % 100000 == 0) fprintf(stderr, "-a-[M::%s-beg] rid->%ld\n", __func__, i);
    // if (memcmp("6c55c5f1-e86d-4065-bbf7-68b24a995bee", Get_NAME((R_INF), i), Get_NAME_LENGTH((R_INF),i)) == 0) {
    //     fprintf(stderr, "-a-[M::%s-beg] rid->%ld\n", __func__, i);
    // } else {
    //     return;
    // }

    if(DBG_TIME && dbg_a) {
        dbg_a[i].chn_tm = dbg_a[i].aln_tm = dbg_a[i].phs_tm = dbg_a[i].cns_tm = 0;
    }


    // debug_retrive_bqual(D, &b->v8t, i, 256); return;
    if(DBG_TIME && dbg_a) {
        tt0 = yak_realtime_0();
    }
    recover_UC_Read(&b->self_read, &R_INF, i); qlen = b->self_read.length; 
    qw = ((qlen < (COV_W_AC<<1))?(qlen>>1):(COV_W_AC)); if(!qw) qw = 1;
    // if(qlen <= 0) return;
    
    
    h_ec_lchain(b->ab, i, b->self_read.seq, b->self_read.length, asm_opt.mz_win, asm_opt.k_mer_length, &R_INF, &b->olist, &b->clist, ((asm_opt.is_ont)?(0.05):(0.02)), asm_opt.max_n_chain, 1, NULL, NULL, &(b->sp), &high_occ, &low_occ, 1, 1, 3, 0.7, 2, 32, COV_W, 1);///ONT high error
    /**
    h_ec_lchain(b->ab, i, b->self_read.seq, b->self_read.length, asm_opt.mz_win, asm_opt.k_mer_length, &R_INF, &b->olist, &b->clist, ((asm_opt.is_ont)?(0.05):(0.02)), asm_opt.max_n_chain, 1, NULL, NULL, &(b->sp), &high_occ, &low_occ, 1, 1, 3, 0.7, 2, 32, COV_W, 0);///ONT high error
    **/
    // b->num_read_base += b->olist.length;
    b->cnt[0] += b->self_read.length;

    aux_o = fetch_aux_ovlp(&b->olist, NULL/**&rse_o**/);///must be here
    if(DBG_TIME && dbg_a) {
        tt1 = yak_realtime_0();
        dbg_a[i].chn_tm = tt1 - tt0;
        tt0 = tt1;
    }

    // stderr_phase_ovlp(&b->olist);

    ///debug for memory
    // snprintf(NULL, 0, "dwn::%u\tdcn::%u", (uint32_t)aux_o->w_list.n, (uint32_t)aux_o->w_list.c.n);
    ///mz1_ha_sketch(rs, rl, mz_w, mz_k, 0, !(asm_opt.flag & HA_F_NO_HPC), &ab->mz, ha_flt_tab, asm_opt.mz_sample_dist, k_flag, dbg_ct, NULL, -1, asm_opt.dp_min_len, -1, sp, asm_opt.mz_rewin, 0, NULL);
    // if((asm_opt.is_ont) && (b->olist.length)) get_mz1(qu->seq, qu->length, RES_W, RES_K, 0, !(asm_opt.flag & HA_F_NO_HPC), b->ab, NULL, NULL, asm_opt.mz_sample_dist, NULL, NULL, NULL, -1, asm_opt.dp_min_len, -1, &(b->sp), asm_opt.mz_rewin, 0, NULL, 0);

    // fprintf(stderr, "\n+[M::%s]\trid::%ld\t%.*s\n", __func__, i, (int)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i));
    
    
    ///r769: kp (gen_hc_r_alin_ea) -> NULL; site_sc (rphase_hc) -> 0
    ///r770: kp (gen_hc_r_alin_ea) -> buf0; site_sc (rphase_hc) -> 0
    ///r789: kp (gen_hc_r_alin_ea) -> NULL; site_sc (rphase_hc) -> 0
    ///r791: kp (gen_hc_r_alin_ea) -> buf0; site_sc (rphase_hc) -> 0
    copy_asg_arr(buf0, b->sp); 
    // tot_b = gen_hc_r_alin_ea_flt(b->ab, &b->olist, &b->clist, &R_INF, &b->self_read, &b->ovlp_read, &b->exz, aux_o, asm_opt.max_n_chain, asm_opt.max_n_chain*HC_MF_R, asm_opt.chn_occ, asm_opt.max_ov_diff_ec, (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), i, E_KHIT, 
    // 1, &b->v16, &b->v64, &(R_INF.paf[i]), asm_opt.is_ont, (asm_opt.is_ont)?(0.006):(-1), (asm_opt.is_ont)?(64):(-1), (asm_opt.is_ont)?(512):(0), (asm_opt.is_ont)?(6):(0), (asm_opt.is_ont)?(1.5):(-1), (asm_opt.is_ont)?(0.1):(-1), &buf0, qw, &b->v8q, &b->v32, 1);
    tot_b = gen_hc_r_alin_ea_flt_mmp(b->ab, &b->olist, &b->clist, &R_INF, &b->self_read, &b->ovlp_read, &b->exz, aux_o, asm_opt.max_n_chain, asm_opt.max_n_chain*HC_MF_R, asm_opt.chn_occ, asm_opt.max_ov_diff_ec, (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), i, E_KHIT, 
    1, &b->v16, &b->v64, &(R_INF.paf[i]), asm_opt.is_ont, (asm_opt.is_ont)?(0.006):(-1), (asm_opt.is_ont)?(64):(-1), (asm_opt.is_ont)?(512):(0), (asm_opt.is_ont)?(6):(0), (asm_opt.is_ont)?(1.5):(-1), (asm_opt.is_ont)?(0.1):(-1), &buf0, qw, &b->v8q, &b->v32);
    copy_asg_arr(b->sp, buf0); 

    // exit(1);
    /**
    copy_asg_arr(buf0, b->sp); 
    //kp: r763 -> r765: buf0 -> NULL
    //kp: r766 -> r767: NULL -> buf0
    tot_b = gen_hc_r_alin_ea(&b->olist, &b->clist, &R_INF, &b->self_read, &b->ovlp_read, &b->exz, aux_o, asm_opt.max_ov_diff_ec, (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), i, E_KHIT, 
    1, &b->v16, &b->v64, &(R_INF.paf[i]), asm_opt.is_ont, (asm_opt.is_ont)?(0.006):(-1), (asm_opt.is_ont)?(64):(-1), (asm_opt.is_ont)?(512):(0), (asm_opt.is_ont)?(6):(0), 
    (asm_opt.is_ont)?(1.5):(-1), (asm_opt.is_ont)?(0.1):(-1), (asm_opt.is_ont)?(&buf0):(NULL), &b->v8q);
    copy_asg_arr(b->sp, buf0);
    **/

    // init_gen_hc_aln_t(&ez, &b->olist, &b->clist, &R_INF, &b->self_read, &b->ovlp_read, &b->exz, aux_o, 
    //     asm_opt.max_ov_diff_ec, asm_opt.max_ov_diff_ec, (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), i, E_KHIT, 1, &b->v16, &b->v64, &(R_INF.paf[i]),
    //     asm_opt.is_ont, asm_opt.is_ont, (asm_opt.is_ont)?(0.006):(-1), (asm_opt.is_ont)?(0.006):(-1), (asm_opt.is_ont)?(64):(-1), (asm_opt.is_ont)?(64):(-1), 
    //     (asm_opt.is_ont)?(512):(0), (asm_opt.is_ont)?(6):(0), (asm_opt.is_ont)?(1.5):(-1), (asm_opt.is_ont)?(0.1):(-1), (asm_opt.is_ont)?(&buf0):(NULL), (uint64_t)-1);
    // gen_hc_r_alin_ea_adv(&ez);
    
    

   if(DBG_TIME && dbg_a) {
        tt1 = yak_realtime_0();
        dbg_a[i].aln_tm = tt1 - tt0;
        tt0 = tt1;

        dbg_a[i].faln = cal_aln_bs(&b->olist);
        dbg_a[i].fbs = tot_b;
    }

    // fprintf(stderr, "-[M::%s] rid::%ld\n", __func__, i);
    //for debug indel
    // prt_ovlp_sam(&b->olist, &b->ovlp_read, b->self_read.seq, b->self_read.length);
    // stderr_phase_ovlp(&b->olist);


    // fprintf(stderr, "\n[M::%s] rid::%ld\t%.*s\tlen::%lld\tocc::%lu\n", __func__, i, (int)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i), b->self_read.length, b->olist.length);

    // fprintf(stderr, "[M::%s] rid::%ld\n", __func__, i);
    // debug_mm_exact_cigar(&b->olist, i, &b->self_read, &b->ovlp_read);

    // b->num_correct_base += b->olist.length;
    /**
     * ///r779: enable this
    copy_asg_arr(buf0, b->sp); 
    gen_reseed_re(&b->olist, &b->clist, aux_o, rse_o, &R_INF, &b->self_read, &b->ovlp_read, &b->exz, &b->pidx, &b->v64, &buf0, 0, asm_opt.mz_win, 19, i, asm_opt.max_ov_diff_ec, asm_opt.max_ov_diff_ec, &b->v16, R_INF.tqn, b->v8q.a);
    copy_asg_arr(b->sp, buf0);
    **/

    copy_asg_arr(buf0, b->sp); 
    //site_sc: r765 -> r766: 1 -> 0
    rphase_hc(&b->olist, &R_INF, &b->hap, &b->self_read, &b->ovlp_read, &b->pidx, &b->v64, &buf0, 0, WINDOW_MAX_SIZE, b->self_read.length, 1/**, 0**/, i, (asm_opt.is_ont)?HPC_PL:0, asm_opt.is_ont, ((asm_opt.is_ont)?&(b->clist.chainDP):NULL), ((asm_opt.is_sc)?&(b->v8q):NULL), /**((asm_opt.is_sc)?&(b->v8t):NULL)**/&(b->v8t), (asm_opt.is_ont)?1:0, ((uint64_t)-1), 0, HC0_W, &b->v32,
    asm_opt.s_hap_cov, asm_opt.infor_cov, het_a, hom_a, asm_opt.polyploidy, -1.0);
    copy_asg_arr(b->sp, buf0);
    ///for debug indel
    // stderr_phase_ovlp(&b->olist);

    // est_rep_err_rate(&b->olist, &b->v64, &b->pidx, qlen, (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), NULL);

    if(DBG_TIME && dbg_a) {
        tt1 = yak_realtime_0();
        dbg_a[i].phs_tm = tt1 - tt0;
        tt0 = tt1;
    }


    dedup_chains(&b->olist);



    copy_asg_arr(buf0, b->sp);
    b->cnt[1] += wcns_gen(&b->olist, &R_INF, i, &b->self_read, &b->ovlp_read, &b->exz, &b->pidx, &b->v64, &buf0, 0, 512, b->self_read.length, 3, 0.500001, aux_o, &b->v32, &b->cns, 256, i, ((uint64_t)-1), 
    R_INF.tr[0], R_INF.tr[1], asm_opt.ont_rate, asm_opt.hf_rate, asm_opt.hf_rate_max, NULL);
    copy_asg_arr(b->sp, buf0);

    if(DBG_TIME && dbg_a) {
        tt1 = yak_realtime_0();
        dbg_a[i].cns_tm = tt1 - tt0;
        tt0 = tt1;
    }


    push_nec_re(aux_o, &(scc.a[i]));
    push_nec_re(aux_o, &(scb.a[i]));

    // if((asm_opt.is_ont) && is_chemical_r_qual(&b->olist, &b->v64, qlen, 1, 16, &(b->v8q), i)/**(is_uncorrected_read(&b->olist, &b->v64, qlen, 1600))**/) {
    //     // b->olist.length = 0;
    //     fprintf(stderr, "[M::%s] rid::%ld\t%.*s\n\n", __func__, i, (int)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i));
    // }

    push_ne_ovlp(&(R_INF.paf[i]), &b->olist, 1, &R_INF, &(scc.a[i])/**, i, &b->self_read, &b->ovlp_read**/);
    push_ne_ovlp(&(R_INF.reverse_paf[i]), &b->olist, 2, &R_INF, NULL/**, i, NULL, NULL**/);


    check_well_cal(&(scc.a[i]), &b->v64, &(R_INF.paf[i].is_fully_corrected), &(R_INF.paf[i].is_abnormal), qlen, (MIN_COVERAGE_THRESHOLD*2), &(R_INF.paf[i]));
    R_INF.trio_flag[i] = AMBIGU;

    // uint32_t k;
    // for (k = 0; k < b->olist.length; k++) {
    //     if(b->olist.list[k].is_match == 1) b->num_recorrect_base++;
    // }
    ///for debug indel
    // exit(1);
    
    

    // prt_chain(&b->olist);

    // ul_map_lchain(b->abl, (uint32_t)-1, s->seq[i], s->len[i], s->opt->w, s->opt->k, s->uu, &b->olist, &b->clist, s->opt->bw_thres, 
    //         s->opt->max_n_chain, 1, NULL, &(b->tmp_region), NULL, &(b->sp), &high_occ, NULL, 0, 1, 0.2/**0.75**/, 2, 3);

    /**
	int fully_cov, abnormal;
    // if(i != 12578) return;
    // fprintf(stderr, "[M::%s-beg] rid->%ld\n", __func__, i);
    // if (memcmp("7897e875-76e5-42c8-bc37-94b370c4cc8d", Get_NAME((R_INF), i), Get_NAME_LENGTH((R_INF),i)) == 0) {
    //     fprintf(stderr, "[M::%s-beg] rid->%ld\n", __func__, i);
    // } else {
    //     return;
    // }

    ha_get_candidates_interface(b->ab, i, &b->self_read, &b->olist, &b->olist_hp, &b->clist, 
    0.02, asm_opt.max_n_chain, 1, NULL, &b->r_buf, &(R_INF.paf[i]), &(R_INF.reverse_paf[i]), &(b->tmp_region), NULL, &(b->sp));

	clear_Cigar_record(&b->cigar1);
	clear_Round2_alignment(&b->round2);

	correct_overlap(&b->olist, &R_INF, &b->self_read, &b->correct, &b->ovlp_read, &b->POA_Graph, &b->DAGCon,
			&b->cigar1, &b->hap, &b->round2, &b->r_buf, &(b->tmp_region.w_list), 0, 1, &fully_cov, &abnormal);

	b->num_read_base += b->self_read.length;
	b->num_correct_base += b->correct.corrected_base;
	b->num_recorrect_base += b->round2.dumy.corrected_base;

	push_cigar(R_INF.cigars, i, &b->cigar1);
	push_cigar(R_INF.second_round_cigar, i, &b->round2.cigar);

	R_INF.paf[i].is_fully_corrected = 0;
	if (fully_cov) {
		if (get_cigar_errors(&b->cigar1) == 0 && get_cigar_errors(&b->round2.cigar) == 0)
			R_INF.paf[i].is_fully_corrected = 1;
	}
	R_INF.paf[i].is_abnormal = abnormal;

    R_INF.trio_flag[i] = AMBIGU;
    
    ///need to be fixed in r305
    // if(ha_idx_hp == NULL)
    // {
    //     R_INF.trio_flag[i] += collect_hp_regions(&b->olist, &R_INF, &(b->k_flag), RESEED_HP_RATE, Get_READ_LENGTH(R_INF, i), NULL);
    // }

    if (R_INF.trio_flag[i] != AMBIGU || b->save_ov) {
		int is_rev = (asm_opt.number_of_round % 2 == 0);
		push_overlaps(&(R_INF.paf[i]), &b->olist, 1, &R_INF, is_rev);
		push_overlaps(&(R_INF.reverse_paf[i]), &b->olist, 2, &R_INF, is_rev);
	}

    if(het_cnt) het_cnt[i] = get_het_cnt(&b->hap);
    // fprintf(stderr, "[M::%s-end] rid->%ld\n", __func__, i);
    **/
    // exit(1);
    refresh_ec_ovec_buf_t0(b, REFRESH_N);

    /**
    fprintf(stderr, "%ld\t---\n", i);
    **/
    //fprintf(stderr, "-[M::%s]\trid::%ld\t%.*s\n", __func__, i, (int)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i));
}

// void dbg_gen_ovlp_lst()
// {
//     ;
// } 

void worker_hap_ec_back_dbg(void *data, long i, int tid)
{
	ec_ovec_buf_t0 *b = &(((ec_ovec_buf_t*)data)->a[tid]);
    uint32_t high_occ = asm_opt.hom_cov * (2.0 - HA_KMER_GOOD_RATIO);
    uint32_t low_occ = asm_opt.hom_cov * HA_KMER_GOOD_RATIO; int64_t het_a, hom_a; ///gen_hc_aln_t ez; 
    overlap_region *aux_o = NULL/**, *rse_o = NULL**/; asg64_v buf0; uint32_t qlen = 0, qw = 0; uint64_t tot_b = 0; double tt0 = 0, tt1 = 0;
    b->v8q.n = b->v8t.n = 0; set_ec_cov(asm_opt.het_cov, asm_opt.hom_cov, asm_opt.het_cov_set, asm_opt.polyploidy, het_a, hom_a);

    // if(i != 0) return;

    if(DBG_TIME && dbg_a) {
        dbg_a[i].chn_tm = dbg_a[i].aln_tm = dbg_a[i].phs_tm = dbg_a[i].cns_tm = 0;
    }


    // debug_retrive_bqual(D, &b->v8t, i, 256); return;
    if(DBG_TIME && dbg_a) {
        if(DBG_TIME == 1) {
            tt0 = yak_realtime_0();
        }
    }
    recover_UC_Read(&b->self_read, &R_INF, i); qlen = b->self_read.length; 
    qw = ((qlen < (COV_W_AC<<1))?(qlen>>1):(COV_W_AC)); if(!qw) qw = 1;
    // if(qlen <= 0) return;
    
    /**
    h_ec_lchain(b->ab, i, b->self_read.seq, b->self_read.length, asm_opt.mz_win, asm_opt.k_mer_length, &R_INF, &b->olist, &b->clist, ((asm_opt.is_ont)?(0.05):(0.02)), asm_opt.max_n_chain, 1, NULL, NULL, &(b->sp), &high_occ, &low_occ, 1, 1, 3, 0.7, 2, 32, COV_W, 1);///ONT high error
    **/
    h_ec_lchain(b->ab, i, b->self_read.seq, b->self_read.length, asm_opt.mz_win, asm_opt.k_mer_length, &R_INF, &b->olist, &b->clist, ((asm_opt.is_ont)?(0.05):(0.02)), asm_opt.max_n_chain, 1, NULL, NULL, &(b->sp), &high_occ, &low_occ, 1, 1, 3, 0.7, 2, 32, COV_W, 0);///ONT high error
    // b->num_read_base += b->olist.length;
    b->cnt[0] += b->self_read.length;

    aux_o = fetch_aux_ovlp(&b->olist, NULL/**&rse_o**/);///must be here
    if(DBG_TIME && dbg_a) {
        if(DBG_TIME == 1) {
            tt1 = yak_realtime_0();
            dbg_a[i].chn_tm = tt1 - tt0;
            tt0 = tt1;
        } else if(DBG_TIME == 2) {
            dbg_a[i].fbs = b->olist.length;
        }
    }

    // stderr_phase_ovlp(&b->olist);

    ///debug for memory
    // snprintf(NULL, 0, "dwn::%u\tdcn::%u", (uint32_t)aux_o->w_list.n, (uint32_t)aux_o->w_list.c.n);
    ///mz1_ha_sketch(rs, rl, mz_w, mz_k, 0, !(asm_opt.flag & HA_F_NO_HPC), &ab->mz, ha_flt_tab, asm_opt.mz_sample_dist, k_flag, dbg_ct, NULL, -1, asm_opt.dp_min_len, -1, sp, asm_opt.mz_rewin, 0, NULL);
    // if((asm_opt.is_ont) && (b->olist.length)) get_mz1(qu->seq, qu->length, RES_W, RES_K, 0, !(asm_opt.flag & HA_F_NO_HPC), b->ab, NULL, NULL, asm_opt.mz_sample_dist, NULL, NULL, NULL, -1, asm_opt.dp_min_len, -1, &(b->sp), asm_opt.mz_rewin, 0, NULL, 0);

    // fprintf(stderr, "\n+[M::%s]\trid::%ld\t%.*s\n", __func__, i, (int)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i));
    
    
    ///r769: kp (gen_hc_r_alin_ea) -> NULL; site_sc (rphase_hc) -> 0
    ///r770: kp (gen_hc_r_alin_ea) -> buf0; site_sc (rphase_hc) -> 0
    ///r789: kp (gen_hc_r_alin_ea) -> NULL; site_sc (rphase_hc) -> 0
    ///r791: kp (gen_hc_r_alin_ea) -> buf0; site_sc (rphase_hc) -> 0
    /**
    copy_asg_arr(buf0, b->sp); 
    // tot_b = gen_hc_r_alin_ea_flt(b->ab, &b->olist, &b->clist, &R_INF, &b->self_read, &b->ovlp_read, &b->exz, aux_o, asm_opt.max_n_chain, asm_opt.max_n_chain*HC_MF_R, asm_opt.chn_occ, asm_opt.max_ov_diff_ec, (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), i, E_KHIT, 
    // 1, &b->v16, &b->v64, &(R_INF.paf[i]), asm_opt.is_ont, (asm_opt.is_ont)?(0.006):(-1), (asm_opt.is_ont)?(64):(-1), (asm_opt.is_ont)?(512):(0), (asm_opt.is_ont)?(6):(0), (asm_opt.is_ont)?(1.5):(-1), (asm_opt.is_ont)?(0.1):(-1), &buf0, qw, &b->v8q, &b->v32, 1);
    tot_b = gen_hc_r_alin_ea_flt_mmp(b->ab, &b->olist, &b->clist, &R_INF, &b->self_read, &b->ovlp_read, &b->exz, aux_o, asm_opt.max_n_chain, asm_opt.max_n_chain*HC_MF_R, asm_opt.chn_occ, asm_opt.max_ov_diff_ec, (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), i, E_KHIT, 
    1, &b->v16, &b->v64, &(R_INF.paf[i]), asm_opt.is_ont, (asm_opt.is_ont)?(0.006):(-1), (asm_opt.is_ont)?(64):(-1), (asm_opt.is_ont)?(512):(0), (asm_opt.is_ont)?(6):(0), (asm_opt.is_ont)?(1.5):(-1), (asm_opt.is_ont)?(0.1):(-1), &buf0, qw, &b->v8q, &b->v32);
    copy_asg_arr(b->sp, buf0); 
    **/

    // exit(1);
    copy_asg_arr(buf0, b->sp); 
    //kp: r763 -> r765: buf0 -> NULL
    //kp: r766 -> r767: NULL -> buf0
    tot_b = gen_hc_r_alin_ea(&b->olist, &b->clist, &R_INF, &b->self_read, &b->ovlp_read, &b->exz, aux_o, asm_opt.max_ov_diff_ec, (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), i, E_KHIT, 
    1, &b->v16, &b->v64, &(R_INF.paf[i]), asm_opt.is_ont, (asm_opt.is_ont)?(0.006):(-1), (asm_opt.is_ont)?(64):(-1), (asm_opt.is_ont)?(512):(0), (asm_opt.is_ont)?(6):(0), 
    (asm_opt.is_ont)?(1.5):(-1), (asm_opt.is_ont)?(0.1):(-1), /**(asm_opt.is_ont)?(&buf0):**/(NULL), &b->v8q);
    copy_asg_arr(b->sp, buf0);

    // init_gen_hc_aln_t(&ez, &b->olist, &b->clist, &R_INF, &b->self_read, &b->ovlp_read, &b->exz, aux_o, 
    //     asm_opt.max_ov_diff_ec, asm_opt.max_ov_diff_ec, (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), i, E_KHIT, 1, &b->v16, &b->v64, &(R_INF.paf[i]),
    //     asm_opt.is_ont, asm_opt.is_ont, (asm_opt.is_ont)?(0.006):(-1), (asm_opt.is_ont)?(0.006):(-1), (asm_opt.is_ont)?(64):(-1), (asm_opt.is_ont)?(64):(-1), 
    //     (asm_opt.is_ont)?(512):(0), (asm_opt.is_ont)?(6):(0), (asm_opt.is_ont)?(1.5):(-1), (asm_opt.is_ont)?(0.1):(-1), (asm_opt.is_ont)?(&buf0):(NULL), (uint64_t)-1);
    // gen_hc_r_alin_ea_adv(&ez);
    
    

   if(DBG_TIME && dbg_a) {
        if(DBG_TIME == 1) {
            tt1 = yak_realtime_0();
            dbg_a[i].aln_tm = tt1 - tt0;
            tt0 = tt1;

            dbg_a[i].faln = cal_aln_bs(&b->olist);
            dbg_a[i].fbs = tot_b;
        } else if(DBG_TIME == 2) {
            dbg_a[i].faln = b->olist.length;
        }
    }

    // fprintf(stderr, "-[M::%s] rid::%ld\n", __func__, i);
    //for debug indel
    // prt_ovlp_sam(&b->olist, &b->ovlp_read, b->self_read.seq, b->self_read.length);
    // stderr_phase_ovlp(&b->olist);


    // fprintf(stderr, "\n[M::%s] rid::%ld\t%.*s\tlen::%lld\tocc::%lu\n", __func__, i, (int)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i), b->self_read.length, b->olist.length);

    // fprintf(stderr, "[M::%s] rid::%ld\n", __func__, i);
    // debug_mm_exact_cigar(&b->olist, i, &b->self_read, &b->ovlp_read);

    // b->num_correct_base += b->olist.length;
    /**
     * ///r779: enable this
    copy_asg_arr(buf0, b->sp); 
    gen_reseed_re(&b->olist, &b->clist, aux_o, rse_o, &R_INF, &b->self_read, &b->ovlp_read, &b->exz, &b->pidx, &b->v64, &buf0, 0, asm_opt.mz_win, 19, i, asm_opt.max_ov_diff_ec, asm_opt.max_ov_diff_ec, &b->v16, R_INF.tqn, b->v8q.a);
    copy_asg_arr(b->sp, buf0);
    **/

    copy_asg_arr(buf0, b->sp); 
    //site_sc: r765 -> r766: 1 -> 0
    rphase_hc(&b->olist, &R_INF, &b->hap, &b->self_read, &b->ovlp_read, &b->pidx, &b->v64, &buf0, 0, WINDOW_MAX_SIZE, b->self_read.length, 1/**, 0**/, i, (asm_opt.is_ont)?HPC_PL:0, asm_opt.is_ont, ((asm_opt.is_ont)?&(b->clist.chainDP):NULL), ((asm_opt.is_sc)?&(b->v8q):NULL), /**((asm_opt.is_sc)?&(b->v8t):NULL)**/&(b->v8t), (asm_opt.is_ont)?1:0, ((uint64_t)-1), 0, HC0_W, &b->v32,
    asm_opt.s_hap_cov, asm_opt.infor_cov, het_a, hom_a, asm_opt.polyploidy, -1.0);
    copy_asg_arr(b->sp, buf0);
    ///for debug indel
    // stderr_phase_ovlp(&b->olist);

    // est_rep_err_rate(&b->olist, &b->v64, &b->pidx, qlen, (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), NULL);

    if(DBG_TIME && dbg_a) {
        if(DBG_TIME == 1) {
            tt1 = yak_realtime_0();
            dbg_a[i].phs_tm = tt1 - tt0;
            tt0 = tt1;
        }
    }


    dedup_chains(&b->olist);



    copy_asg_arr(buf0, b->sp);
    b->cnt[1] += wcns_gen(&b->olist, &R_INF, i, &b->self_read, &b->ovlp_read, &b->exz, &b->pidx, &b->v64, &buf0, 0, 512, b->self_read.length, 3, 0.500001, aux_o, &b->v32, &b->cns, 256, i, ((uint64_t)-1), 
    R_INF.tr[0], R_INF.tr[1], asm_opt.ont_rate, asm_opt.hf_rate, asm_opt.hf_rate_max, NULL);
    copy_asg_arr(b->sp, buf0);

    if(DBG_TIME && dbg_a) {
        if(DBG_TIME == 1) {
            tt1 = yak_realtime_0();
            dbg_a[i].cns_tm = tt1 - tt0;
            tt0 = tt1;
        }
    }


    push_nec_re(aux_o, &(scc.a[i]));
    push_nec_re(aux_o, &(scb.a[i]));

    // if((asm_opt.is_ont) && is_chemical_r_qual(&b->olist, &b->v64, qlen, 1, 16, &(b->v8q), i)/**(is_uncorrected_read(&b->olist, &b->v64, qlen, 1600))**/) {
    //     // b->olist.length = 0;
    //     fprintf(stderr, "[M::%s] rid::%ld\t%.*s\n\n", __func__, i, (int)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i));
    // }

    push_ne_ovlp(&(R_INF.paf[i]), &b->olist, 1, &R_INF, &(scc.a[i])/**, i, &b->self_read, &b->ovlp_read**/);
    push_ne_ovlp(&(R_INF.reverse_paf[i]), &b->olist, 2, &R_INF, NULL/**, i, NULL, NULL**/);


    check_well_cal(&(scc.a[i]), &b->v64, &(R_INF.paf[i].is_fully_corrected), &(R_INF.paf[i].is_abnormal), qlen, (MIN_COVERAGE_THRESHOLD*2), &(R_INF.paf[i]));
    R_INF.trio_flag[i] = AMBIGU;

    // uint32_t k;
    // for (k = 0; k < b->olist.length; k++) {
    //     if(b->olist.list[k].is_match == 1) b->num_recorrect_base++;
    // }
    ///for debug indel
    // exit(1);
    
    

    // prt_chain(&b->olist);

    // ul_map_lchain(b->abl, (uint32_t)-1, s->seq[i], s->len[i], s->opt->w, s->opt->k, s->uu, &b->olist, &b->clist, s->opt->bw_thres, 
    //         s->opt->max_n_chain, 1, NULL, &(b->tmp_region), NULL, &(b->sp), &high_occ, NULL, 0, 1, 0.2/**0.75**/, 2, 3);

    /**
	int fully_cov, abnormal;
    // if(i != 12578) return;
    // fprintf(stderr, "[M::%s-beg] rid->%ld\n", __func__, i);
    // if (memcmp("7897e875-76e5-42c8-bc37-94b370c4cc8d", Get_NAME((R_INF), i), Get_NAME_LENGTH((R_INF),i)) == 0) {
    //     fprintf(stderr, "[M::%s-beg] rid->%ld\n", __func__, i);
    // } else {
    //     return;
    // }

    ha_get_candidates_interface(b->ab, i, &b->self_read, &b->olist, &b->olist_hp, &b->clist, 
    0.02, asm_opt.max_n_chain, 1, NULL, &b->r_buf, &(R_INF.paf[i]), &(R_INF.reverse_paf[i]), &(b->tmp_region), NULL, &(b->sp));

	clear_Cigar_record(&b->cigar1);
	clear_Round2_alignment(&b->round2);

	correct_overlap(&b->olist, &R_INF, &b->self_read, &b->correct, &b->ovlp_read, &b->POA_Graph, &b->DAGCon,
			&b->cigar1, &b->hap, &b->round2, &b->r_buf, &(b->tmp_region.w_list), 0, 1, &fully_cov, &abnormal);

	b->num_read_base += b->self_read.length;
	b->num_correct_base += b->correct.corrected_base;
	b->num_recorrect_base += b->round2.dumy.corrected_base;

	push_cigar(R_INF.cigars, i, &b->cigar1);
	push_cigar(R_INF.second_round_cigar, i, &b->round2.cigar);

	R_INF.paf[i].is_fully_corrected = 0;
	if (fully_cov) {
		if (get_cigar_errors(&b->cigar1) == 0 && get_cigar_errors(&b->round2.cigar) == 0)
			R_INF.paf[i].is_fully_corrected = 1;
	}
	R_INF.paf[i].is_abnormal = abnormal;

    R_INF.trio_flag[i] = AMBIGU;
    
    ///need to be fixed in r305
    // if(ha_idx_hp == NULL)
    // {
    //     R_INF.trio_flag[i] += collect_hp_regions(&b->olist, &R_INF, &(b->k_flag), RESEED_HP_RATE, Get_READ_LENGTH(R_INF, i), NULL);
    // }

    if (R_INF.trio_flag[i] != AMBIGU || b->save_ov) {
		int is_rev = (asm_opt.number_of_round % 2 == 0);
		push_overlaps(&(R_INF.paf[i]), &b->olist, 1, &R_INF, is_rev);
		push_overlaps(&(R_INF.reverse_paf[i]), &b->olist, 2, &R_INF, is_rev);
	}

    if(het_cnt) het_cnt[i] = get_het_cnt(&b->hap);
    // fprintf(stderr, "[M::%s-end] rid->%ld\n", __func__, i);
    **/
    // exit(1);
    refresh_ec_ovec_buf_t0(b, REFRESH_N);

    /**
    fprintf(stderr, "%ld\t---\n", i);
    **/
    //fprintf(stderr, "-[M::%s]\trid::%ld\t%.*s\n", __func__, i, (int)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i));
}



static void worker_hap_ec_step(void *data, long i, int tid)
{
	ec_ovec_buf_t0 *b = &(((ec_ovec_buf_t*)data)->a[tid]); i += scc.bid;
    uint32_t high_occ = asm_opt.hom_cov * (2.0 - HA_KMER_GOOD_RATIO);
    uint32_t low_occ = asm_opt.hom_cov * HA_KMER_GOOD_RATIO; int64_t het_a, hom_a, fph_a; ///gen_hc_aln_t ez; 
    overlap_region *aux_o = NULL/**, *rse_o = NULL**/; asg64_v buf0; uint32_t qlen = 0, qw = 0; uint64_t tot_b = 0; 
    double tt0 = 0, tt1 = 0; uint64_t ave_e = UINT64_MAX, bd_e = UINT64_MAX, tot_cov = UINT64_MAX;
    b->v8q.n = b->v8t.n = 0; set_ec_cov(asm_opt.het_cov, asm_opt.hom_cov, asm_opt.het_cov_set, asm_opt.polyploidy, het_a, hom_a);

    // if(i < 1230524) return;

    // fprintf(stderr, "+[M::%s]\trid::%ld\t%.*s\n", __func__, i, (int)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i));
    // 25e396cf-a58d-4f67-a391-33f36fb3891f	0	48396	id:i:1477155
    // 8583bdfa-f38f-4976-be74-2357e1905852	0	43608	id:i:2857459

    // if (memcmp("9edb4aa1-3a56-40dc-b687-77e4176d1053", Get_NAME((R_INF), i), Get_NAME_LENGTH((R_INF),i)) == 0 || 
    //     memcmp("25e30873-9737-4e6d-bdb6-a504a26ef3de", Get_NAME((R_INF), i), Get_NAME_LENGTH((R_INF),i)) == 0 || 
    //     memcmp("19699b82-2883-43e1-a11e-ec0c95eaccd4", Get_NAME((R_INF), i), Get_NAME_LENGTH((R_INF),i)) == 0) {
    //     fprintf(stderr, "\n+[M::%s]\trid-target::%ld\t%.*s\n", __func__, i, (int)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i));
    // }
    


    // if(i != 3621590) return;///need to dig into later

    // if(i != 1461185) return;

    // if(i != 27542) return;
    // if(i != 25765) return;
    // if(i != 898) return;
    // if(i != 6843) return;
    // if(i != 14627) return;

    // if(i != 7148) return;

    // if(i != 339646) return;
    // if(i!=854835) return;
    // if(i != 533) return;
    
    
    // if(i % 100000 == 0) fprintf(stderr, "-a-[M::%s-beg] rid->%ld\n", __func__, i);
    // if (memcmp("6c55c5f1-e86d-4065-bbf7-68b24a995bee", Get_NAME((R_INF), i), Get_NAME_LENGTH((R_INF),i)) == 0) {
    //     fprintf(stderr, "-a-[M::%s-beg] rid->%ld\n", __func__, i);
    // } else {
    //     return;
    // }

    if(DBG_TIME && dbg_a) {
        dbg_a[i].chn_tm = dbg_a[i].aln_tm = dbg_a[i].phs_tm = dbg_a[i].cns_tm = 0;
    }


    // debug_retrive_bqual(D, &b->v8t, i, 256); return;
    if(DBG_TIME && dbg_a) {
        tt0 = yak_realtime_0();
    }
    recover_UC_Read(&b->self_read, &R_INF, i); qlen = b->self_read.length; 
    qw = ((qlen < (COV_W_AC<<1))?(qlen>>1):(COV_W_AC)); if(!qw) qw = 1;
    // if(qlen <= 0) return;
    
    
    h_ec_lchain(b->ab, i, b->self_read.seq, b->self_read.length, asm_opt.mz_win, asm_opt.k_mer_length, &R_INF, &b->olist, &b->clist, ((asm_opt.is_ont)?(0.05):(0.02)), asm_opt.max_n_chain, 1, NULL, NULL, &(b->sp), &high_occ, &low_occ, 1, 1, 3, 0.7, 2, 32, COV_W, 1);///ONT high error
    /**
    h_ec_lchain(b->ab, i, b->self_read.seq, b->self_read.length, asm_opt.mz_win, asm_opt.k_mer_length, &R_INF, &b->olist, &b->clist, ((asm_opt.is_ont)?(0.05):(0.02)), asm_opt.max_n_chain, 1, NULL, NULL, &(b->sp), &high_occ, &low_occ, 1, 1, 3, 0.7, 2, 32, COV_W, 0);///ONT high error
    **/
    // b->num_read_base += b->olist.length;
    b->cnt[0] += b->self_read.length;

    aux_o = fetch_aux_ovlp(&b->olist, NULL/**&rse_o**/);///must be here
    if(DBG_TIME && dbg_a) {
        tt1 = yak_realtime_0();
        dbg_a[i].chn_tm = tt1 - tt0;
        tt0 = tt1;
    }

    // stderr_phase_ovlp(&b->olist);

    ///debug for memory
    // snprintf(NULL, 0, "dwn::%u\tdcn::%u", (uint32_t)aux_o->w_list.n, (uint32_t)aux_o->w_list.c.n);
    ///mz1_ha_sketch(rs, rl, mz_w, mz_k, 0, !(asm_opt.flag & HA_F_NO_HPC), &ab->mz, ha_flt_tab, asm_opt.mz_sample_dist, k_flag, dbg_ct, NULL, -1, asm_opt.dp_min_len, -1, sp, asm_opt.mz_rewin, 0, NULL);
    // if((asm_opt.is_ont) && (b->olist.length)) get_mz1(qu->seq, qu->length, RES_W, RES_K, 0, !(asm_opt.flag & HA_F_NO_HPC), b->ab, NULL, NULL, asm_opt.mz_sample_dist, NULL, NULL, NULL, -1, asm_opt.dp_min_len, -1, &(b->sp), asm_opt.mz_rewin, 0, NULL, 0);

    // fprintf(stderr, "\n+[M::%s]\trid::%ld\t%.*s\n", __func__, i, (int)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i));
    
    
    ///r769: kp (gen_hc_r_alin_ea) -> NULL; site_sc (rphase_hc) -> 0
    ///r770: kp (gen_hc_r_alin_ea) -> buf0; site_sc (rphase_hc) -> 0
    ///r789: kp (gen_hc_r_alin_ea) -> NULL; site_sc (rphase_hc) -> 0
    ///r791: kp (gen_hc_r_alin_ea) -> buf0; site_sc (rphase_hc) -> 0
    copy_asg_arr(buf0, b->sp); 
    tot_b = gen_hc_r_alin_ea_flt(b->ab, &b->olist, &b->clist, &R_INF, &b->self_read, &b->ovlp_read, &b->exz, aux_o, asm_opt.max_n_chain, asm_opt.max_n_chain*HC_MF_R, asm_opt.chn_occ, asm_opt.max_ov_diff_ec, (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), i, E_KHIT, 
    1, &b->v16, &b->v64, &(R_INF.paf[i]), asm_opt.is_ont, (asm_opt.is_ont)?(0.006):(-1), (asm_opt.is_ont)?(64):(-1), (asm_opt.is_ont)?(512):(0), (asm_opt.is_ont)?(6):(0), 
    (asm_opt.is_ont)?(1.5):(-1), (asm_opt.is_ont)?(0.1):(-1), &buf0, qw, &b->v8q, &b->v32, 1);
    copy_asg_arr(b->sp, buf0); 

    /**
    copy_asg_arr(buf0, b->sp); 
    //kp: r763 -> r765: buf0 -> NULL
    //kp: r766 -> r767: NULL -> buf0
    tot_b = gen_hc_r_alin_ea(&b->olist, &b->clist, &R_INF, &b->self_read, &b->ovlp_read, &b->exz, aux_o, asm_opt.max_ov_diff_ec, (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), i, E_KHIT, 
    1, &b->v16, &b->v64, &(R_INF.paf[i]), asm_opt.is_ont, (asm_opt.is_ont)?(0.006):(-1), (asm_opt.is_ont)?(64):(-1), (asm_opt.is_ont)?(512):(0), (asm_opt.is_ont)?(6):(0), 
    (asm_opt.is_ont)?(1.5):(-1), (asm_opt.is_ont)?(0.1):(-1), (asm_opt.is_ont)?(&buf0):(NULL), &b->v8q);
    copy_asg_arr(b->sp, buf0);
    **/

    // init_gen_hc_aln_t(&ez, &b->olist, &b->clist, &R_INF, &b->self_read, &b->ovlp_read, &b->exz, aux_o, 
    //     asm_opt.max_ov_diff_ec, asm_opt.max_ov_diff_ec, (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), i, E_KHIT, 1, &b->v16, &b->v64, &(R_INF.paf[i]),
    //     asm_opt.is_ont, asm_opt.is_ont, (asm_opt.is_ont)?(0.006):(-1), (asm_opt.is_ont)?(0.006):(-1), (asm_opt.is_ont)?(64):(-1), (asm_opt.is_ont)?(64):(-1), 
    //     (asm_opt.is_ont)?(512):(0), (asm_opt.is_ont)?(6):(0), (asm_opt.is_ont)?(1.5):(-1), (asm_opt.is_ont)?(0.1):(-1), (asm_opt.is_ont)?(&buf0):(NULL), (uint64_t)-1);
    // gen_hc_r_alin_ea_adv(&ez);
    
    

   if(DBG_TIME && dbg_a) {
        tt1 = yak_realtime_0();
        dbg_a[i].aln_tm = tt1 - tt0;
        tt0 = tt1;

        dbg_a[i].faln = cal_aln_bs(&b->olist);
        dbg_a[i].fbs = tot_b;
    }

    // fprintf(stderr, "-[M::%s] rid::%ld\n", __func__, i);
    //for debug indel
    // prt_ovlp_sam(&b->olist, &b->ovlp_read, b->self_read.seq, b->self_read.length);
    // stderr_phase_ovlp(&b->olist);


    // fprintf(stderr, "\n[M::%s] rid::%ld\t%.*s\tlen::%lld\tocc::%lu\n", __func__, i, (int)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i), b->self_read.length, b->olist.length);

    // fprintf(stderr, "[M::%s] rid::%ld\n", __func__, i);
    // debug_mm_exact_cigar(&b->olist, i, &b->self_read, &b->ovlp_read);

    // b->num_correct_base += b->olist.length;
    /**
     * ///r779: enable this
    copy_asg_arr(buf0, b->sp); 
    gen_reseed_re(&b->olist, &b->clist, aux_o, rse_o, &R_INF, &b->self_read, &b->ovlp_read, &b->exz, &b->pidx, &b->v64, &buf0, 0, asm_opt.mz_win, 19, i, asm_opt.max_ov_diff_ec, asm_opt.max_ov_diff_ec, &b->v16, R_INF.tqn, b->v8q.a);
    copy_asg_arr(b->sp, buf0);
    **/

    copy_asg_arr(buf0, b->sp); 
    //site_sc: r765 -> r766: 1 -> 0
    rphase_hc(&b->olist, &R_INF, &b->hap, &b->self_read, &b->ovlp_read, &b->pidx, &b->v64, &buf0, 0, WINDOW_MAX_SIZE, b->self_read.length, 1/**, 0**/, i, (asm_opt.is_ont)?HPC_PL:0, asm_opt.is_ont, ((asm_opt.is_ont)?&(b->clist.chainDP):NULL), ((asm_opt.is_sc)?&(b->v8q):NULL), /**((asm_opt.is_sc)?&(b->v8t):NULL)**/&(b->v8t), (asm_opt.is_ont)?1:0, ((uint64_t)-1), 0, HC0_W, &b->v32,
    asm_opt.s_hap_cov, asm_opt.infor_cov, het_a, hom_a, asm_opt.polyploidy, -1.0);
    copy_asg_arr(b->sp, buf0);
    ///for debug indel
    // stderr_phase_ovlp(&b->olist);


    if(DBG_TIME && dbg_a) {
        tt1 = yak_realtime_0();
        dbg_a[i].phs_tm = tt1 - tt0;
        tt0 = tt1;
    }


    dedup_chains(&b->olist);



    copy_asg_arr(buf0, b->sp);
    b->cnt[1] += wcns_gen(&b->olist, &R_INF, i, &b->self_read, &b->ovlp_read, &b->exz, &b->pidx, &b->v64, &buf0, 0, 512, b->self_read.length, 3, 0.500001, aux_o, &b->v32, &b->cns, 256, i, ((uint64_t)-1), 
    R_INF.tr[0], R_INF.tr[1], asm_opt.ont_rate, asm_opt.hf_rate, asm_opt.hf_rate_max, NULL);
    copy_asg_arr(b->sp, buf0);

    if(DBG_TIME && dbg_a) {
        tt1 = yak_realtime_0();
        dbg_a[i].cns_tm = tt1 - tt0;
        tt0 = tt1;
    }


    push_nec_re(aux_o, &(scc.a[i]));
    push_nec_re(aux_o, &(scb.a[i]));

    // if((asm_opt.is_ont) && is_chemical_r_qual(&b->olist, &b->v64, qlen, 1, 16, &(b->v8q), i)/**(is_uncorrected_read(&b->olist, &b->v64, qlen, 1600))**/) {
    //     // b->olist.length = 0;
    //     fprintf(stderr, "[M::%s] rid::%ld\t%.*s\n\n", __func__, i, (int)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i));
    // }
    fph_a = het_a*0.6; if(fph_a < (MIN_COVERAGE_THRESHOLD*2)) fph_a = (MIN_COVERAGE_THRESHOLD*2); 
    est_rep_err_rate(&b->olist, &b->v64, &b->pidx, qlen, (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), NULL, (MIN_COVERAGE_THRESHOLD*2), fph_a, 1, 0.01, 0.92, &ave_e, &bd_e, &tot_cov);

    push_ne_ovlp(&(R_INF.paf[i]), &b->olist, 1, &R_INF, &(scc.a[i])/**, i, &b->self_read, &b->ovlp_read**/);
    push_ne_ovlp(&(R_INF.reverse_paf[i]), &b->olist, 2, &R_INF, NULL/**, i, NULL, NULL**/);

    check_well_cal(&(scc.a[i]), &b->v64, &(R_INF.paf[i].is_fully_corrected), &(R_INF.paf[i].is_abnormal), qlen, (MIN_COVERAGE_THRESHOLD*2), &(R_INF.paf[i]));
    R_INF.trio_flag[i] = AMBIGU;

    


    // uint32_t k;
    // for (k = 0; k < b->olist.length; k++) {
    //     if(b->olist.list[k].is_match == 1) b->num_recorrect_base++;
    // }
    ///for debug indel
    // exit(1);
    
    

    // prt_chain(&b->olist);

    // ul_map_lchain(b->abl, (uint32_t)-1, s->seq[i], s->len[i], s->opt->w, s->opt->k, s->uu, &b->olist, &b->clist, s->opt->bw_thres, 
    //         s->opt->max_n_chain, 1, NULL, &(b->tmp_region), NULL, &(b->sp), &high_occ, NULL, 0, 1, 0.2/**0.75**/, 2, 3);

    /**
	int fully_cov, abnormal;
    // if(i != 12578) return;
    // fprintf(stderr, "[M::%s-beg] rid->%ld\n", __func__, i);
    // if (memcmp("7897e875-76e5-42c8-bc37-94b370c4cc8d", Get_NAME((R_INF), i), Get_NAME_LENGTH((R_INF),i)) == 0) {
    //     fprintf(stderr, "[M::%s-beg] rid->%ld\n", __func__, i);
    // } else {
    //     return;
    // }

    ha_get_candidates_interface(b->ab, i, &b->self_read, &b->olist, &b->olist_hp, &b->clist, 
    0.02, asm_opt.max_n_chain, 1, NULL, &b->r_buf, &(R_INF.paf[i]), &(R_INF.reverse_paf[i]), &(b->tmp_region), NULL, &(b->sp));

	clear_Cigar_record(&b->cigar1);
	clear_Round2_alignment(&b->round2);

	correct_overlap(&b->olist, &R_INF, &b->self_read, &b->correct, &b->ovlp_read, &b->POA_Graph, &b->DAGCon,
			&b->cigar1, &b->hap, &b->round2, &b->r_buf, &(b->tmp_region.w_list), 0, 1, &fully_cov, &abnormal);

	b->num_read_base += b->self_read.length;
	b->num_correct_base += b->correct.corrected_base;
	b->num_recorrect_base += b->round2.dumy.corrected_base;

	push_cigar(R_INF.cigars, i, &b->cigar1);
	push_cigar(R_INF.second_round_cigar, i, &b->round2.cigar);

	R_INF.paf[i].is_fully_corrected = 0;
	if (fully_cov) {
		if (get_cigar_errors(&b->cigar1) == 0 && get_cigar_errors(&b->round2.cigar) == 0)
			R_INF.paf[i].is_fully_corrected = 1;
	}
	R_INF.paf[i].is_abnormal = abnormal;

    R_INF.trio_flag[i] = AMBIGU;
    
    ///need to be fixed in r305
    // if(ha_idx_hp == NULL)
    // {
    //     R_INF.trio_flag[i] += collect_hp_regions(&b->olist, &R_INF, &(b->k_flag), RESEED_HP_RATE, Get_READ_LENGTH(R_INF, i), NULL);
    // }

    if (R_INF.trio_flag[i] != AMBIGU || b->save_ov) {
		int is_rev = (asm_opt.number_of_round % 2 == 0);
		push_overlaps(&(R_INF.paf[i]), &b->olist, 1, &R_INF, is_rev);
		push_overlaps(&(R_INF.reverse_paf[i]), &b->olist, 2, &R_INF, is_rev);
	}

    if(het_cnt) het_cnt[i] = get_het_cnt(&b->hap);
    // fprintf(stderr, "[M::%s-end] rid->%ld\n", __func__, i);
    **/
    // exit(1);
    refresh_ec_ovec_buf_t0(b, REFRESH_N);

    /**
    fprintf(stderr, "%ld\t---\n", i);
    **/
    //fprintf(stderr, "-[M::%s]\trid::%ld\t%.*s\n", __func__, i, (int)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i));
}




static void worker_hap_ec_ss(void *data, long i, int tid)
{
	ec_ovec_buf_t0 *b = &(((ec_ovec_buf_t*)data)->a[tid]);
    uint32_t high_occ = asm_opt.hom_cov * (2.0 - HA_KMER_GOOD_RATIO);
    uint32_t low_occ = asm_opt.hom_cov * HA_KMER_GOOD_RATIO; int64_t het_a, hom_a; ///gen_hc_aln_t ez;
    overlap_region *aux_o = NULL/**, *rse_o = NULL**/; asg64_v buf0; uint32_t qlen = 0, qw = 0; uint64_t /**tot_b = 0,**/ i0 = i, prt_n0; 
    b->v8q.n = b->v8t.n = 0; set_ec_cov(asm_opt.het_cov, asm_opt.hom_cov, asm_opt.het_cov_set, asm_opt.polyploidy, het_a, hom_a);

    // if(((uint64_t)i) < dbgss->fn) return;
    i = (uint32_t)dbgss->fa[i0]; prt_n0 = dbgss->spt_mul[tid].n;
    
    // if (memcmp("4e144e93-4653-4ebf-8920-7943e378cf9a", Get_NAME((R_INF), i), Get_NAME_LENGTH((R_INF),i)) == 0) {
    //     fprintf(stderr, "-a-[M::%s-beg] rid->%ld\n", __func__, i);
    // } else {
    //     return;
    // }

    // if(i != 6814) return;

    // fprintf(stderr, "\n[M::%s] rid::%ld\t%.*s\tlen::%lld\n", __func__, i, (int)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i), b->self_read.length);


    recover_UC_Read(&b->self_read, &R_INF, i); qlen = b->self_read.length; 
    qw = ((qlen < (COV_W_AC<<1))?(qlen>>1):(COV_W_AC)); if(!qw) qw = 1;
    // if(qlen <= 0) return;


    ////new version
    aux_o = NULL; ///tot_b = 0; 
    h_ec_lchain(b->ab, i, b->self_read.seq, b->self_read.length, asm_opt.mz_win, asm_opt.k_mer_length, &R_INF, &b->olist, &b->clist, ((asm_opt.is_ont)?(0.05):(0.02)), asm_opt.max_n_chain, 1, NULL, NULL, &(b->sp), &high_occ, &low_occ, 1, 1, 3, 0.7, 2, 32, COV_W, 1);///ONT high error
    aux_o = fetch_aux_ovlp(&b->olist, NULL/**&rse_o**/);///must be here

    copy_asg_arr(buf0, b->sp); 
    /**tot_b =**/ gen_hc_r_alin_ea_flt(b->ab, &b->olist, &b->clist, &R_INF, &b->self_read, &b->ovlp_read, &b->exz, aux_o, asm_opt.max_n_chain, asm_opt.max_n_chain*HC_MF_R, asm_opt.chn_occ, asm_opt.max_ov_diff_ec, (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), i, E_KHIT, 
    1, &b->v16, &b->v64, &(R_INF.paf[i]), asm_opt.is_ont, (asm_opt.is_ont)?(0.006):(-1), (asm_opt.is_ont)?(64):(-1), (asm_opt.is_ont)?(512):(0), (asm_opt.is_ont)?(6):(0), 
    (asm_opt.is_ont)?(1.5):(-1), (asm_opt.is_ont)?(0.1):(-1), &buf0, qw, &b->v8q, &b->v32, 0);
    copy_asg_arr(b->sp, buf0); 

    stderr_phase_ovlp_buf(i0, &b->olist, &b->clist, b->v32.a + b->v32.n - b->olist.length - b->olist.length, b->v32.a + b->v32.n - b->olist.length, &(dbgss->spt_mul[tid]), &(dbgss->ssa[i]), "++");



    ////old version
    aux_o = NULL; ///tot_b = 0; 
    h_ec_lchain(b->ab, i, b->self_read.seq, b->self_read.length, asm_opt.mz_win, asm_opt.k_mer_length, &R_INF, &b->olist, &b->clist, ((asm_opt.is_ont)?(0.05):(0.02)), asm_opt.max_n_chain, 1, NULL, NULL, &(b->sp), &high_occ, &low_occ, 1, 1, 3, 0.7, 2, 32, COV_W, 0);///ONT high error
    
    aux_o = fetch_aux_ovlp(&b->olist, NULL);///must be here
    copy_asg_arr(buf0, b->sp); 
    /**tot_b =**/ gen_hc_r_alin_ea(&b->olist, &b->clist, &R_INF, &b->self_read, &b->ovlp_read, &b->exz, aux_o, asm_opt.max_ov_diff_ec, (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), i, E_KHIT, 
    1, &b->v16, &b->v64, &(R_INF.paf[i]), asm_opt.is_ont, (asm_opt.is_ont)?(0.006):(-1), (asm_opt.is_ont)?(64):(-1), (asm_opt.is_ont)?(512):(0), (asm_opt.is_ont)?(6):(0), 
    (asm_opt.is_ont)?(1.5):(-1), (asm_opt.is_ont)?(0.1):(-1), (asm_opt.is_ont)?(&buf0):(NULL), &b->v8q);
    copy_asg_arr(b->sp, buf0);


    stderr_phase_ovlp_buf(i0, &b->olist, &b->clist, NULL, NULL, &(dbgss->spt_mul[tid]), &(dbgss->ssb[i]), "--");

    if(dbgss->spt_mul[tid].n > prt_n0) {
        dbgss->fa[i0] = prt_n0;
        dbgss->fthr.a[i0] = tid;
        kv_push(char, dbgss->spt_mul[tid], '\0');
    } else {
        dbgss->fa[i0] = (uint64_t)-1;
        dbgss->fthr.a[i0] = tid;
    }

    return;



    b->cnt[0] += b->self_read.length;


    // fprintf(stderr, "-[M::%s] rid::%ld\n", __func__, i);
    //for debug indel
    // prt_ovlp_sam(&b->olist, &b->ovlp_read, b->self_read.seq, b->self_read.length);
    // stderr_phase_ovlp(&b->olist);


    // fprintf(stderr, "\n[M::%s] rid::%ld\t%.*s\tlen::%lld\tocc::%lu\n", __func__, i, (int)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i), b->self_read.length, b->olist.length);

    // fprintf(stderr, "[M::%s] rid::%ld\n", __func__, i);
    // debug_mm_exact_cigar(&b->olist, i, &b->self_read, &b->ovlp_read);

    // b->num_correct_base += b->olist.length;
    /**
     * ///r779: enable this
    copy_asg_arr(buf0, b->sp); 
    gen_reseed_re(&b->olist, &b->clist, aux_o, rse_o, &R_INF, &b->self_read, &b->ovlp_read, &b->exz, &b->pidx, &b->v64, &buf0, 0, asm_opt.mz_win, 19, i, asm_opt.max_ov_diff_ec, asm_opt.max_ov_diff_ec, &b->v16, R_INF.tqn, b->v8q.a);
    copy_asg_arr(b->sp, buf0);
    **/

    copy_asg_arr(buf0, b->sp); 
    //site_sc: r765 -> r766: 1 -> 0
    rphase_hc(&b->olist, &R_INF, &b->hap, &b->self_read, &b->ovlp_read, &b->pidx, &b->v64, &buf0, 0, WINDOW_MAX_SIZE, b->self_read.length, 1/**, 0**/, i, (asm_opt.is_ont)?HPC_PL:0, asm_opt.is_ont, ((asm_opt.is_ont)?&(b->clist.chainDP):NULL), ((asm_opt.is_sc)?&(b->v8q):NULL), /**((asm_opt.is_sc)?&(b->v8t):NULL)**/&(b->v8t), (asm_opt.is_ont)?1:0, ((uint64_t)-1), 0, HC0_W, &b->v32,
    asm_opt.s_hap_cov, asm_opt.infor_cov, het_a, hom_a, asm_opt.polyploidy, -1.0);
    copy_asg_arr(b->sp, buf0);
    ///for debug indel
    // stderr_phase_ovlp(&b->olist);


    dedup_chains(&b->olist);



    copy_asg_arr(buf0, b->sp);
    b->cnt[1] += wcns_gen(&b->olist, &R_INF, i, &b->self_read, &b->ovlp_read, &b->exz, &b->pidx, &b->v64, &buf0, 0, 512, b->self_read.length, 3, 0.500001, aux_o, &b->v32, &b->cns, 256, i, ((uint64_t)-1), 
    R_INF.tr[0], R_INF.tr[1], asm_opt.ont_rate, asm_opt.hf_rate, asm_opt.hf_rate_max, NULL);
    copy_asg_arr(b->sp, buf0);


    push_nec_re(aux_o, &(scc.a[i]));
    push_nec_re(aux_o, &(scb.a[i]));


    push_ne_ovlp(&(R_INF.paf[i]), &b->olist, 1, &R_INF, &(scc.a[i])/**, i, &b->self_read, &b->ovlp_read**/);
    push_ne_ovlp(&(R_INF.reverse_paf[i]), &b->olist, 2, &R_INF, NULL/**, i, NULL, NULL**/);


    check_well_cal(&(scc.a[i]), &b->v64, &(R_INF.paf[i].is_fully_corrected), &(R_INF.paf[i].is_abnormal), qlen, (MIN_COVERAGE_THRESHOLD*2), &(R_INF.paf[i]));
    R_INF.trio_flag[i] = AMBIGU;

    refresh_ec_ovec_buf_t0(b, REFRESH_N);

}


static void worker_hap_ec_hybrid(void *data, long i, int tid)
{
	ec_ovec_buf_t0 *b = &(((ec_ovec_buf_t*)data)->a[tid]);
    uint32_t high_occ = asm_opt.hom_cov * (2.0 - HA_KMER_GOOD_RATIO); int64_t het_a, hom_a;
    uint32_t low_occ = asm_opt.hom_cov * HA_KMER_GOOD_RATIO; double bw_h, bw_l, e_h, e_l;
    gen_hc_aln_t ez; overlap_region *aux_o = NULL, *rse_o = NULL; asg64_v buf0, buf1; uint64_t qlen = 0, qw = 0, qid = i; //uint64_t sk[2], ek[2], fn, qid = i, nec;
    if(qid < R_INF.tqn) {///ont
        bw_h = 0.05; bw_l = 0.035; e_h = asm_opt.max_ov_diff_ec; e_l = (asm_opt.max_ov_diff_ec + asm_opt.max_ov_diff_ec_sec)/2;
    } else { ///HiFi
        bw_h = 0.035; bw_l = 0.02; e_h = (asm_opt.max_ov_diff_ec + asm_opt.max_ov_diff_ec_sec)/2; e_l = asm_opt.max_ov_diff_ec_sec;
        if(R_INF.is_syn) {///remove all HiFi-to-ONT overlaps as we will get them later
            pull_ovlp_syn(&(R_INF.paf[i]), R_INF.tqn); pull_ovlp_syn(&(R_INF.reverse_paf[i]), R_INF.tqn);
            return;
        }
    }
    b->v8q.n = b->v8t.n = 0; set_ec_cov(asm_opt.het_cov, asm_opt.hom_cov, asm_opt.het_cov_set, asm_opt.polyploidy, het_a, hom_a);

    // if(i != 5966) return;

    // fprintf(stderr, "-a-[M::%s] rid::%ld\n", __func__, i);

    //id:i:21102
    // if (memcmp("a59fab4a-892b-4ab7-bf4b-926bed57865b_1", Get_NAME((R_INF), i), Get_NAME_LENGTH((R_INF),i)) == 0) {
    //id:i:3504
    // if (memcmp("485f7963-eeb4-4745-ab74-1be4d61460c3", Get_NAME((R_INF), i), Get_NAME_LENGTH((R_INF),i)) == 0) {
    //     fprintf(stderr, "-a-[M::%s-beg] rid->%ld, rlen->%lu\n", __func__, i, Get_READ_LENGTH((R_INF),i));
    // } else {
    //     return;
    // }
    

    // if(i != 9) return;

    // debug_retrive_bqual(D, &b->v8t, i, 256); return;

    recover_UC_Read(&b->self_read, &R_INF, i); qlen = b->self_read.length; 
    qw = ((qlen < (COV_W_AC<<1))?(qlen>>1):(COV_W_AC)); if(!qw) qw = 1;
    // if(qlen <= 0) return;

    h_ec_lchain_hybrid(b->ab, i, b->self_read.seq, b->self_read.length, asm_opt.mz_win, asm_opt.k_mer_length, &R_INF, &b->olist, &b->clist, bw_h, bw_l,
        /**((asm_opt.is_ont)?(0.05):(0.02)),**/ asm_opt.max_n_chain, 1, NULL, NULL, &(b->sp), &high_occ, &low_occ, 1, 1, 3, 0.7, 2, 32, COV_W, R_INF.tqn, 0, 1);///ONT high error

    // fprintf(stderr, "-b-[M::%s] rid::%ld\n", __func__, i);

    // b->num_read_base += b->olist.length;
    b->cnt[0] += b->self_read.length;

    aux_o = fetch_aux_ovlp(&b->olist, NULL/**&rse_o**/);///must be here

    copy_asg_arr(buf0, b->sp); 
    init_gen_hc_aln_t(&ez, &b->olist, &b->clist, &R_INF, &b->self_read, &b->ovlp_read, &b->exz, aux_o, rse_o, /**&b->v8q**/NULL,
        e_l, e_h, (qid < R_INF.tqn)?(WINDOW_OHC):(WINDOW_HC), WINDOW_OHC, i, E_KHIT, 1, &b->v16, &b->v64, &(R_INF.paf[i]),
        ((qid < R_INF.tqn)?(1):(0)), 1, (qid < R_INF.tqn)?(0.006):(-1), 0.006, (qid < R_INF.tqn)?(64):(-1), 64, 
        (qid < R_INF.tqn)?(512):(0), (qid < R_INF.tqn)?(6):(0), (qid < R_INF.tqn)?(1.5):(-1), (qid < R_INF.tqn)?(0.1):(-1), NULL, 
        &(b->v32), &buf0, b->ab, (asm_opt.max_n_chain>0)?(asm_opt.max_n_chain):(1), ((asm_opt.max_n_chain*HC_MF_R)>0)?(asm_opt.max_n_chain*HC_MF_R):1, 
        asm_opt.chn_occ, ((asm_opt.hom_cov*HC_AV_MIN)>0)?(asm_opt.hom_cov*HC_AV_MIN):(1), qw, R_INF.tqn, asm_opt.hom_cov); 
        // gen_hc_r_alin_ea_adv(&ez);
    // gen_hc_r_alin_ea_adv_flt(&ez);
    gen_hc_r_alin_ea_adv_flt_mmp(&ez);
    copy_asg_arr(b->sp, buf0);

    // fprintf(stderr, "-c-[M::%s] rid::%ld\n", __func__, i);
    /**
    copy_asg_arr(buf0, b->sp); 
    init_gen_hc_aln_t(&ez, &b->olist, &b->clist, &R_INF, &b->self_read, &b->ovlp_read, &b->exz, aux_o, rse_o, &b->v8q,
        e_l, e_h, (qid < R_INF.tqn)?(WINDOW_OHC):(WINDOW_HC), WINDOW_OHC, i, E_KHIT, 1, &b->v16, &b->v64, &(R_INF.paf[i]),
        ((qid < R_INF.tqn)?(1):(0)), 1, (qid < R_INF.tqn)?(0.006):(-1), 0.006, (qid < R_INF.tqn)?(64):(-1), 64, 
        (qid < R_INF.tqn)?(512):(0), (qid < R_INF.tqn)?(6):(0), (qid < R_INF.tqn)?(1.5):(-1), (qid < R_INF.tqn)?(0.1):(-1), (qid < R_INF.tqn)?(&buf0):(NULL), 
        NULL, NULL, NULL, -1, -1, -1, R_INF.tqn);        
    gen_hc_r_alin_ea_adv(&ez);
    copy_asg_arr(b->sp, buf0);
    **/
        
    // stderr_phase_ovlp(&b->olist);

    ///debug for memory
    // snprintf(NULL, 0, "dwn::%u\tdcn::%u", (uint32_t)aux_o->w_list.n, (uint32_t)aux_o->w_list.c.n);
    ///mz1_ha_sketch(rs, rl, mz_w, mz_k, 0, !(asm_opt.flag & HA_F_NO_HPC), &ab->mz, ha_flt_tab, asm_opt.mz_sample_dist, k_flag, dbg_ct, NULL, -1, asm_opt.dp_min_len, -1, sp, asm_opt.mz_rewin, 0, NULL);

    // fprintf(stderr, "-[M::%s] rid::%ld\n", __func__, i);


    // fprintf(stderr, "\n[M::%s] rid::%ld\t%.*s\tlen::%lld\tocc::%lu\n", __func__, i, (int)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i), b->self_read.length, b->olist.length);

    // fprintf(stderr, "[M::%s] rid::%ld\n", __func__, i);
    // debug_mm_exact_cigar(&b->olist, i, &b->self_read, &b->ovlp_read);

    // b->num_correct_base += b->olist.length;
    /** 
    copy_asg_arr(buf0, b->sp); 
    gen_reseed_re(&b->olist, &b->clist, aux_o, rse_o, &R_INF, &b->self_read, &b->ovlp_read, &b->exz, &b->pidx, &b->v64, &buf0, 0, asm_opt.mz_win, 19, i, e_h, e_l, &b->v16, R_INF.tqn, b->v8q.a);
    copy_asg_arr(b->sp, buf0);
    **/

    ///for debug indel
    // prt_ovlp_sam(&b->olist, &b->ovlp_read, b->self_read.seq, b->self_read.length);

    copy_asg_arr(buf0, b->sp); 
    rphase_hc(&b->olist, &R_INF, &b->hap, &b->self_read, &b->ovlp_read, &b->pidx, &b->v64, &buf0, 0, WINDOW_MAX_SIZE, b->self_read.length, 1/**, 0**/, i, (asm_opt.is_ont)?HPC_PL:0, asm_opt.is_ont, ((asm_opt.is_ont)?&(b->clist.chainDP):NULL), /**((asm_opt.is_sc)?&(b->v8q):NULL)**/&(b->v8q), ((asm_opt.is_sc)?&(b->v8t):NULL), (asm_opt.is_ont)?1:0, R_INF.tqn, 0/**1**/, HC0_W, &b->v32,
    asm_opt.s_hap_cov, asm_opt.infor_cov, het_a, hom_a, asm_opt.polyploidy, (((double)R_INF.tr[1])/((double)(R_INF.tr[0] + R_INF.tr[1]))));
    copy_asg_arr(b->sp, buf0);
    ///for debug indel
    // if(i == 23863) stderr_phase_ovlp(&b->olist);

    dedup_chains(&b->olist);

    copy_asg_arr(buf0, b->sp); copy_asg_arr(buf1, b->hap.snp_srt);
    b->cnt[1] += wcns_gen(&b->olist, &R_INF, i, &b->self_read, &b->ovlp_read, &b->exz, &b->pidx, &b->v64, &buf0, 0, 512, b->self_read.length, 3, 0.500001, aux_o, &b->v32, &b->cns, 256, i, R_INF.tqn, 
        R_INF.tr[0], R_INF.tr[1], asm_opt.ont_rate, asm_opt.hf_rate, asm_opt.hf_rate_max, &buf1);
    copy_asg_arr(b->sp, buf0); copy_asg_arr(b->hap.snp_srt, buf1);

    push_nec_re(aux_o, &(scc.a[i]));
    push_nec_re(aux_o, &(scb.a[i]));

    // if((asm_opt.is_ont) && is_chemical_r_qual(&b->olist, &b->v64, qlen, 1, 16, &(b->v8q), i)/**(is_uncorrected_read(&b->olist, &b->v64, qlen, 1600))**/) {
    //     // b->olist.length = 0;
    //     fprintf(stderr, "[M::%s] rid::%ld\t%.*s\n\n", __func__, i, (int)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i));
    // }
    if((qid < R_INF.tqn) && (R_INF.is_syn == 1)) push_ne_ovlp_syn(&(R_INF.paf[i]), &b->olist, 1, &R_INF, &(scc.a[i]), &b->v64, R_INF.tqn, het_a, (((double)R_INF.tr[1])/((double)(R_INF.tr[0] + R_INF.tr[1])))/**, i, &b->self_read, &b->ovlp_read**/);
    else push_ne_ovlp(&(R_INF.paf[i]), &b->olist, 1, &R_INF, &(scc.a[i])/**, i, &b->self_read, &b->ovlp_read**/);
    push_ne_ovlp(&(R_INF.reverse_paf[i]), &b->olist, 2, &R_INF, NULL/**, i, NULL, NULL**/);


    check_well_cal(&(scc.a[i]), &b->v64, &(R_INF.paf[i].is_fully_corrected), &(R_INF.paf[i].is_abnormal), qlen, (MIN_COVERAGE_THRESHOLD*2), &(R_INF.paf[i]));
    R_INF.trio_flag[i] = AMBIGU;

    // prt_chain(&b->olist);

    // ul_map_lchain(b->abl, (uint32_t)-1, s->seq[i], s->len[i], s->opt->w, s->opt->k, s->uu, &b->olist, &b->clist, s->opt->bw_thres, 
    //         s->opt->max_n_chain, 1, NULL, &(b->tmp_region), NULL, &(b->sp), &high_occ, NULL, 0, 1, 0.2/**0.75**/, 2, 3);
    // exit(1);
    refresh_ec_ovec_buf_t0(b, REFRESH_N);
    // exit(0);
}

uint32_t is_HiFi_only_gen(uint64_t rid, ma_hit_t_alloc *paf, asg64_v *b, uint64_t tqn, int64_t ql, double cut)
{
    uint64_t k, s, e; ma_hit_t *z; int64_t tl, qs, qe, ts, te, qr, tr;
    for (k = b->n = 0; k < paf->length; k++) {
        z = &(paf->buffer[k]); 
        if(z->tn >= tqn) continue; ///no HiFi-to-HiFi
        s = (uint32_t)z->qns; e = z->qe;
        if(z->el) {
            tl = Get_READ_LENGTH(R_INF, Get_tn(*z));
            qs = ((uint32_t)(z->qns)); qe = z->qe; 
            ts = z->ts; te = z->te;
            if(qs >= ql) {qs = ql;} if(qe > ql) {qe = ql;} 
            if(ts >= tl) {ts = tl;} if(te > tl) {te = tl;} 

            if(qs <= ts) {
                ts -= qs; qs = 0;
            } else {
                qs -= ts; ts = 0;
            }

            qr = ql - qe; tr = tl - te;
            if(qr <= tr) {
                qe = ql; te += qr;        
            } else {
                te = tl; qe += tr; 
            }
            s = qs; e = qe;
            if(e <= s) continue;
        }
        // if(rid == 23863) {
        //     fprintf(stderr, "[M::%s]\ts::%lu(%u)\te::%lu(%u)\tbl::%u\tz->el::%u\n", __func__, s, (uint32_t)z->qns, e, z->qe, z->bl, z->el);
        // }
        s <<= 2; if(z->bl == 0x7FFFFFFF) s |= 2;
        e <<= 2; if(z->bl == 0x7FFFFFFF) e |= 2; e |= 1;
        kv_push(uint64_t, *b, s); kv_push(uint64_t, *b, e);
    }
    radix_sort_ec64(b->a, b->a + b->n);

    int64_t dp, old_dp, dp_h, old_dp_h, st, ed;
    for (k = dp = old_dp = dp_h = old_dp_h = st = ed = 0; k < b->n; k++) {
        old_dp = dp; old_dp_h = dp_h;
        if (b->a[k]&1) {
            --dp;///if a[j] is qe
            if(b->a[k]&2) --dp_h;
        } else {
            ++dp;
            if(b->a[k]&2) ++dp_h;
        }

        ed = b->a[k]>>2;
        if(ed > st) {
            if((old_dp <= 0) || (old_dp_h <= 0)) return 0;
            if(old_dp_h < (old_dp*cut)) return 0;

        }
        st = ed;
    }


    ed = ql; old_dp = dp; old_dp_h = dp_h;
    if(ed > st) {
        if((old_dp <= 0) || (old_dp_h <= 0)) return 0;
        if(old_dp_h < (old_dp*cut)) return 0;
    }
    
    return 1;
}

static void worker_hap_ec_hybrid_sync(void *data, long i, int tid)
{
	ec_ovec_buf_t0 *b = &(((ec_ovec_buf_t*)data)->a[tid]); i += R_INF.tqn; 
    uint32_t high_occ = asm_opt.hom_cov * (2.0 - HA_KMER_GOOD_RATIO); int64_t max_n_chain_a = asm_opt.max_n_chain;
    uint32_t low_occ = asm_opt.hom_cov * HA_KMER_GOOD_RATIO; double bw_h, bw_l, e_h, e_l, hf_rate; uint8_t hf_only = 0; int64_t het_a, hom_a;
    gen_hc_aln_t ez; overlap_region *aux_o = NULL, *rse_o = NULL; asg64_v buf0, buf1; uint64_t qlen = 0, qw = 0/**, qid = i**/; //uint64_t sk[2], ek[2], fn, qid = i, nec;

    hf_only = is_HiFi_only_gen(i, &(R_INF.paf[i]), &b->v64, R_INF.tqn, Get_READ_LENGTH(R_INF, i), 0.666666);
    // if(i == 23863) {
    //     fprintf(stderr, "[M::%s]\tqid::%ld\thf_only::%u\trl::%lu\n", __func__, i, hf_only, Get_READ_LENGTH(R_INF, i));
    //     // fprintf(stderr, "[M::%s]\t%.*s(qid::%u)\tql::%lu\tq::[%u,%u)\t%c\t%.*s(tid::%u)\t\ttl::%lu\tt::[%u,%u)\tel::%u\n", __func__,
    //     //     (int32_t)Get_NAME_LENGTH(R_INF, (z->buffer[k].qns>>32)), Get_NAME(R_INF, (z->buffer[k].qns>>32)), (uint32_t)(z->buffer[k].qns>>32), Get_READ_LENGTH(R_INF, (z->buffer[k].qns>>32)), 
    //     //     (uint32_t)z->buffer[k].qns, z->buffer[k].qe, "+-"[z->buffer[k].rev], 
    //     //     (int32_t)Get_NAME_LENGTH(R_INF, z->buffer[k].tn), Get_NAME(R_INF, z->buffer[k].tn), z->buffer[k].tn, Get_READ_LENGTH(R_INF, (z->buffer[k].tn)),  
    //     //     z->buffer[k].ts, z->buffer[k].te, z->buffer[k].el?1:0);
    // }
    bw_h = 0.035; bw_l = 0.02; e_h = (asm_opt.max_ov_diff_ec + asm_opt.max_ov_diff_ec_sec)/2; e_l = asm_opt.max_ov_diff_ec_sec;
    b->v8q.n = b->v8t.n = 0; hf_rate = ((double)R_INF.tr[1])/(((double)R_INF.tr[1]) + ((double)R_INF.tr[0]));
    set_ec_cov(asm_opt.het_cov, asm_opt.hom_cov, asm_opt.het_cov_set, asm_opt.polyploidy, het_a, hom_a);
    if(hf_only) {
        max_n_chain_a = ceil(hf_rate*max_n_chain_a); 
        if(max_n_chain_a < 6) max_n_chain_a = 6; 
        if(max_n_chain_a > asm_opt.max_n_chain) max_n_chain_a = asm_opt.max_n_chain;

        het_a = ceil(hf_rate*het_a); 
        if(het_a < 5) het_a = 5;
        if(het_a > asm_opt.hom_cov) het_a = asm_opt.hom_cov;

        hom_a = ceil(hf_rate*hom_a); 
        if(hom_a < 5) hom_a = 5;
        if(hom_a > asm_opt.het_cov) hom_a = asm_opt.het_cov;
    }
    if(max_n_chain_a <= 0) max_n_chain_a = 1;

    // if(i != 5966) return;    

    // debug_retrive_bqual(D, &b->v8t, i, 256); return;

    recover_UC_Read(&b->self_read, &R_INF, i); qlen = b->self_read.length; 
    qw = ((qlen < (COV_W_AC<<1))?(qlen>>1):(COV_W_AC)); if(!qw) qw = 1;

    h_ec_lchain_hybrid(b->ab, i, b->self_read.seq, b->self_read.length, asm_opt.mz_win, asm_opt.k_mer_length, &R_INF, &b->olist, &b->clist, bw_h, bw_l,
        max_n_chain_a, 1, NULL, NULL, &(b->sp), &high_occ, &low_occ, 1, 1, 3, 0.7, 2, 32, COV_W, R_INF.tqn, hf_only, 1);///ONT high error

    // fprintf(stderr, "-b-[M::%s] rid::%ld\n", __func__, i);

    // b->num_read_base += b->olist.length;
    b->cnt[0] += b->self_read.length;

    aux_o = fetch_aux_ovlp(&b->olist, NULL/**&rse_o**/);///must be here

    copy_asg_arr(buf0, b->sp); 
    init_gen_hc_aln_t(&ez, &b->olist, &b->clist, &R_INF, &b->self_read, &b->ovlp_read, &b->exz, aux_o, rse_o, &b->v8q,
        e_l, e_h, WINDOW_HC, WINDOW_OHC, i, E_KHIT, 1, &b->v16, &b->v64, &(R_INF.paf[i]), 0, 1, -1, 0.006, -1, 64, 
        0, 0, -1, -1, NULL, &(b->v32), &buf0, b->ab, max_n_chain_a, ((max_n_chain_a*HC_MF_R)>0)?(max_n_chain_a*HC_MF_R):1, 
        asm_opt.chn_occ, ((hom_a*HC_AV_MIN)>0)?(hom_a*HC_AV_MIN):(1), qw, R_INF.tqn, hom_a); 
        // gen_hc_r_alin_ea_adv(&ez);
    gen_hc_r_alin_ea_adv_flt(&ez);
    copy_asg_arr(b->sp, buf0);


    copy_asg_arr(buf0, b->sp); 
    rphase_hc(&b->olist, &R_INF, &b->hap, &b->self_read, &b->ovlp_read, &b->pidx, &b->v64, &buf0, 0, WINDOW_MAX_SIZE, b->self_read.length, 1/**, 0**/, i, (asm_opt.is_ont)?HPC_PL:0, asm_opt.is_ont, ((asm_opt.is_ont)?&(b->clist.chainDP):NULL), /**((asm_opt.is_sc)?&(b->v8q):NULL)**/&(b->v8q), ((asm_opt.is_sc)?&(b->v8t):NULL), (asm_opt.is_ont)?1:0, R_INF.tqn, 0/**1**/, HC0_W, &b->v32, 
    asm_opt.s_hap_cov, asm_opt.infor_cov, het_a, hom_a, asm_opt.polyploidy, hf_rate);
    copy_asg_arr(b->sp, buf0);
    ///for debug indel
    // if(i == 23863) stderr_phase_ovlp(&b->olist);

    dedup_chains(&b->olist);

    copy_asg_arr(buf0, b->sp); copy_asg_arr(buf1, b->hap.snp_srt);
    b->cnt[1] += wcns_gen(&b->olist, &R_INF, i, &b->self_read, &b->ovlp_read, &b->exz, &b->pidx, &b->v64, &buf0, 0, 512, b->self_read.length, 3, 0.500001, aux_o, &b->v32, &b->cns, 256, i, R_INF.tqn, 
        R_INF.tr[0], R_INF.tr[1], asm_opt.ont_rate, asm_opt.hf_rate, asm_opt.hf_rate_max, hf_only?(NULL):(&buf1));
    copy_asg_arr(b->sp, buf0); copy_asg_arr(b->hap.snp_srt, buf1);

    push_nec_re(aux_o, &(scc.a[i]));
    push_nec_re(aux_o, &(scb.a[i]));

    // if((asm_opt.is_ont) && is_chemical_r_qual(&b->olist, &b->v64, qlen, 1, 16, &(b->v8q), i)/**(is_uncorrected_read(&b->olist, &b->v64, qlen, 1600))**/) {
    //     // b->olist.length = 0;
    //     fprintf(stderr, "[M::%s] rid::%ld\t%.*s\n\n", __func__, i, (int)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i));
    // }
    push_ne_ovlp_flt(&(R_INF.paf[i]), &b->olist, 1, &R_INF, b->self_read.length, &(scc.a[i]), R_INF.tqn, hf_only);
    push_ne_ovlp_flt(&(R_INF.reverse_paf[i]), &b->olist, 2, &R_INF, b->self_read.length, NULL, R_INF.tqn, hf_only);


    check_well_cal(&(scc.a[i]), &b->v64, &(R_INF.paf[i].is_fully_corrected), &(R_INF.paf[i].is_abnormal), qlen, (MIN_COVERAGE_THRESHOLD*2), &(R_INF.paf[i]));
    R_INF.trio_flag[i] = AMBIGU;

    // prt_chain(&b->olist);

    // ul_map_lchain(b->abl, (uint32_t)-1, s->seq[i], s->len[i], s->opt->w, s->opt->k, s->uu, &b->olist, &b->clist, s->opt->bw_thres, 
    //         s->opt->max_n_chain, 1, NULL, &(b->tmp_region), NULL, &(b->sp), &high_occ, NULL, 0, 1, 0.2/**0.75**/, 2, 3);
    // exit(1);
    refresh_ec_ovec_buf_t0(b, REFRESH_N);
    // exit(0);
}



static void worker_hap_ec_dbg_paf(void *data, long i, int tid)
{
	ec_ovec_buf_t0 *b = &(((cal_ec_r_dbg_step_t*)data)->buf->a[tid]);
    r_dbg_step_res_t *rr = &(((cal_ec_r_dbg_step_t*)data)->res[tid]);
    uint32_t high_occ = asm_opt.hom_cov * (2.0 - HA_KMER_GOOD_RATIO);
    uint32_t low_occ = asm_opt.hom_cov * HA_KMER_GOOD_RATIO;
    overlap_region *aux_o = NULL; i += ((cal_ec_r_dbg_step_t*)data)->si;

    // debug_retrive_bqual(D, &b->v8t, i, 256); return;

    recover_UC_Read(&b->self_read, &R_INF, i); 

    h_ec_lchain(b->ab, i, b->self_read.seq, b->self_read.length, asm_opt.mz_win, asm_opt.k_mer_length, &R_INF, &b->olist, &b->clist, ((asm_opt.is_ont)?(0.05):(0.02)), asm_opt.max_n_chain, 1, NULL, NULL, &(b->sp), &high_occ, &low_occ, 1, 1, 3, 0.7, 2, 32, COV_W, 0);///ONT high error

    aux_o = fetch_aux_ovlp(&b->olist, NULL);///must be here

    // stderr_phase_ovlp(&b->olist);
    gen_hc_r_alin_ea(&b->olist, &b->clist, &R_INF, &b->self_read, &b->ovlp_read, &b->exz, aux_o, asm_opt.max_ov_diff_ec, (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), i, E_KHIT, 1, &b->v16, &b->v64, &(R_INF.paf[i]), 0, -1, -1, 0, 0, -1, -1, NULL, &b->v8q);

    uint32_t k, m, tl; overlap_region *z; bit_extz_t ez; ma_hit_t *t; 
    for (k = 0; k < b->olist.length; k++) {
        z = &(b->olist.list[k]);
        if(!(z->w_list.n)) continue;

        tl = Get_READ_LENGTH((R_INF), z->y_id);
        for (m = 0; m < z->w_list.n; m++) {
            if(is_ualn_win(z->w_list.a[m])) continue;
            set_bit_extz_t(ez, (*z), m);
            kv_pushp(ma_hit_t, *rr, &t);

            t->qns = z->x_id; t->qns = t->qns << 32;
            t->tn = z->y_id;

            t->qns = t->qns | (uint64_t)(z->w_list.a[m].x_start);
            t->qe = z->w_list.a[m].x_end + 1;

            t->ts = z->w_list.a[m].y_start;
            t->te = z->w_list.a[m].y_end + 1;

            t->rev = z->y_pos_strand;
            
            t->bl = rr->ec.n;
            kv_resize(uint16_t, rr->ec, rr->ec.n + ez.cigar.n);
            memcpy(rr->ec.a + rr->ec.n, ez.cigar.a, ez.cigar.n * sizeof((*(rr->ec.a))));
            rr->ec.n += ez.cigar.n;
            t->cc = rr->ec.n - t->bl;

            if(t->rev) {
                t->ts = tl - z->w_list.a[m].y_end - 1;
                t->te = tl - z->w_list.a[m].y_start;
            }
        }
    }
}

uint32_t adjust_exact_match(asg16_v *in, int64_t xs0, int64_t xe0, int64_t ys0, int64_t ye0, uint64_t *rxs, uint64_t *rxe, uint64_t *rys, uint64_t *rye, uint32_t rev)
{
    *rxs = *rxe = *rys = *rye = 0; 
    if((xe0 <= xs0) || (ye0 <= ys0)) return 0;
    int64_t xk, yk, ck, cn = in->n, wx[2], wy[2], os, oe; uint16_t op, bq, bt; uint32_t cl; uint64_t ovlp;
    xk = yk = 0;

    // fprintf(stderr, "[M::%s]\tx0::[%ld,%ld)\ty0::[%ld,%ld)\trev::%u\n", __func__, xs0, xe0, ys0, ye0, rev);
    
    if(!rev) {
        ck = 0;
        while (ck < cn && xk < xe0) {
            wx[0] = xk; wy[0] = yk; 
            // ck = pop_trace_bp(in, ck, &op, &b, &cl);
            ck = pop_trace_bp_f(in, ck, &op, &bq, &bt, &cl);
            if(op != 2) xk += cl;
            if(op != 3) yk += cl;
            wx[1] = xk; wy[1] = yk;  
            // fprintf(stderr, "[M::%s]\told::[%ld,%ld]\tnew::[%ld,%ld]\t%u%c\n", __func__, wx[0], wx[1], wy[0], wy[1], cl, "MSID"[op]);
            if(op == 0) {
                os = MAX(xs0, wx[0]); oe = MIN(xe0, wx[1]);
                ovlp = ((oe>os)? (oe-os):0);
                if((ovlp > 0) && (ovlp > (*rxe) - (*rxs))) {
                    // fprintf(stderr, "[M::%s]\to::[%ld,%ld)\n", __func__, os, oe);
                    (*rxs) = wy[0] + os - wx[0]; 
                    (*rxe) = wy[0] + oe - wx[0]; 

                    (*rys) = ys0 + os - xs0; 
                    (*rye) = ys0 + oe - xs0; 
                }
            }
            // if((op == 0) && (wx[0] <= s) && (wx[1] >= e)) {
            //     (*rs) = wy[0] + s - wx[0]; 
            //     (*re) = wy[0] + e - wx[0]; 
            // }
        }
    } else {
        ck = cn - 1;
        while (ck >= 0 && xk < xe0) {
            wx[0] = xk; wy[0] = yk; 
            // ck = pop_trace_bp_rev(in, ck, &op, &b, &cl);
            ck = pop_trace_bp_rev_f(in, ck, &op, &bq, &bt, &cl);
            if(op != 2) xk += cl;
            if(op != 3) yk += cl;
            wx[1] = xk; wy[1] = yk;  
            if(op == 0) {
                os = MAX(xs0, wx[0]); oe = MIN(xe0, wx[1]);
                ovlp = ((oe>os)? (oe-os):0);
                if((ovlp > 0) && (ovlp > (*rxe) - (*rxs))) {
                    (*rxs) = wy[0] + os - wx[0]; 
                    (*rxe) = wy[0] + oe - wx[0]; 

                    (*rys) = ys0 + os - xs0; 
                    (*rye) = ys0 + oe - xs0; 
                }
            }
            // if((op == 0) && (wx[0] <= s) && (wx[1] >= e)) {
            //     (*rs) = wy[0] + s - wx[0]; 
            //     (*re) = wy[0] + e - wx[0]; 
            // }
        }
    }
    

    return (*rxe) - (*rxs);
}

uint32_t quick_exact_match(ma_hit_t *z, All_reads *rref, UC_Read* qu, UC_Read* tu, cc_v *sc)
{
    uint64_t rts, rte, rqs, rqe, f = 0; int64_t ql, tl, qr, tr, qs, qe, ts, te;

    if((R_INF.is_syn == 1) && ((z->qns>>32) >= R_INF.tqn) && (z->tn < R_INF.tqn)) {///HiFi-to-ONT
        f = 1;
    } else if(adjust_exact_match(&(sc->a[z->tn]), z->ts, z->te, ((uint32_t)(z->qns)), z->qe, &rts, &rte, &rqs, &rqe, z->rev)) {
        z->ts = rts; z->te = rte; f = 1;
        z->qns >>= 32; z->qns <<= 32; z->qns |= ((uint64_t)(rqs)); z->qe = rqe;

        ///debug
        // qs = rqs; qe = rqe; ts = rts; te = rte; 
        // resize_UC_Read(tu, te - ts); 
        // recover_UC_Read_sub_region(tu->seq, ts, te - ts, z->rev, rref, z->tn);
        
        // fprintf(stderr, "[M::%s]\trq::[%lu,%lu)\trt::[%lu,%lu)\n", __func__, rqs, rqe, rts, rte);
        // fprintf(stderr, "-0-[M::%s] qstr::%.*s\n", __func__, ((int)(qe - qs)), qu->seq + qs);
        // fprintf(stderr, "-0-[M::%s] tstr::%.*s\n", __func__, ((int)(te - ts)), tu->seq);

        // if(memcmp(qu->seq + qs, tu->seq, qe - qs) == 0) {
        //     fprintf(stderr, "-0-[M::%s]\tsb\n", __func__);
        // } else {
        //     fprintf(stderr, "-1-[M::%s]\tsa\n", __func__);
        // }
    }
    // fprintf(stderr, "-1-[M::%s]\tf::%lu\n", __func__, f);
    ql = qu->length; tl = Get_READ_LENGTH((*rref), z->tn);
    qs = ((uint32_t)(z->qns)); qe = z->qe; ts = z->ts; te = z->te;
    if(qs >= ql) {qs = ql;} if(qe > ql) {qe = ql;} if(qe <= qs) {f = 0;}
    // fprintf(stderr, "-2-[M::%s]\tf::%lu\n", __func__, f);
    if(ts >= tl) {ts = tl;} if(te > tl) {te = tl;} if(te <= ts) {f = 0;}
    // fprintf(stderr, "-3-[M::%s]\tf::%lu\n", __func__, f);
    if((qe - qs) != (te - ts)) {f = 0;}
    // fprintf(stderr, "-4-[M::%s]\tf::%lu\n", __func__, f);

    if(qs <= ts) {
        ts -= qs; qs = 0;
    } else {
        qs -= ts; ts = 0;
    }


    qr = ql - qe; tr = tl - te;
    if(qr <= tr) {
        qe = ql; te += qr;        
    } else {
        te = tl; qe += tr; 
    }

    // fprintf(stderr, "-5-[M::%s]\tzq::[%ld,\t%ld)\tzt::[%ld,\t%ld)\teq::[%u,\t%u)\tet::[%u,\t%u)\tql::%ld\ttl::%ld\tf::%lu\n", 
    // __func__, qs, qe, ts, te, ((uint32_t)(z->qns)), z->qe, z->ts, z->te, ql, tl, f);

    z->qns >>= 32; z->qns <<= 32; z->qns |= ((uint64_t)(qs)); z->qe = qe;
    z->ts = ts; z->te = te;

    if((f) && ((te - ts) == (qe - qs)) && (qe > qs)) {
        resize_UC_Read(tu, te - ts); 
        recover_UC_Read_sub_region(tu->seq, ts, te - ts, z->rev, rref, z->tn);

        // fprintf(stderr, "[M::%s] qstr::%.*s\n", __func__, ((int)(qe - qs)), qu->seq + qs);
        // fprintf(stderr, "[M::%s] tstr::%.*s\n", __func__, ((int)(te - ts)), tu->seq);

        if(memcmp(qu->seq + qs, tu->seq, qe - qs) == 0) return 1;
    }

    return 0;
}

uint64_t cal_cov_re(asg64_v *idx, int64_t *k, uint64_t s, uint64_t e)
{
    uint64_t *a = idx->a, ws, we, cn, os, oe, ovlp, tot = 0; int64_t n = idx->n;
    if(n <= 0) return 0;
    if((*k) >= n) (*k) = 0;
    while (((*k) > 0) && (((uint32_t)a[*k]) > s)) (*k) -= 2;
    if((*k) < 0) (*k) = 0;

    while (((*k) < n) && ((a[*k]>>32) < e)) {
        ws = (a[*k]>>32); we = ((uint32_t)a[*k]); cn = a[(*k) + 1];
        os = MAX(s, ws); oe = MIN(e, we);
        ovlp = ((oe>os)? (oe-os):0);
        tot += (ovlp*cn);
        (*k) += 2;
    }

    return tot;
}

uint64_t gen_hap_dc_cov(asg64_v *be, asg64_v *ba, ma_hit_t_alloc *paf, All_reads *rref, uint64_t wl, int64_t occ_exact, double occ_exact_rate, UC_Read* qu, UC_Read* tu, cc_v *sc, uint64_t rid)
{
    ma_hit_t *z; be->n = ba->n = 0; uint64_t k, s, e, vn, m; asg64_v *v = NULL;
    int64_t dp, old_dp, st = 0, ed, ql = qu->length, qs, qe, ff;
    for (k = 0; k < paf->length; k++) {
        z = &(paf->buffer[k]);

        // if(rid == 16) {
        //     fprintf(stderr, "[M::%s]\tqn::%u::%.*s\ttn::%u::%.*s\t%c\tq::[%u,%u)\tq::[%u,%u)\tel::%u\n", __func__, 
        //         (uint32_t)(z->qns>>32), (int)Get_NAME_LENGTH(R_INF, (uint32_t)(z->qns>>32)), Get_NAME(R_INF, (uint32_t)(z->qns>>32)), z->tn, (int)Get_NAME_LENGTH(R_INF, z->tn), Get_NAME(R_INF, z->tn), "+-"[z->rev],
        //         (uint32_t)z->qns, z->qe, z->ts, z->te, z->el);
        // }
        
        if((z->el) && (quick_exact_match(z, rref, qu, tu, sc))) {
            s = ((uint32_t)(z->qns)); e = z->qe;
            kv_push(uint64_t, (*be), (s<<1));
            kv_push(uint64_t, (*be), (e<<1)|1);
            z->el = 1;
            // fprintf(stderr, "-gmm-[M::%s]\tqn::%u::%.*s\ttn::%u::%.*s\t%c\tq::[%u,%u)\tq::[%u,%u)\n", __func__, 
            //     (uint32_t)(z->qns>>32), (int)Get_NAME_LENGTH(R_INF, (uint32_t)(z->qns>>32)), Get_NAME(R_INF, (uint32_t)(z->qns>>32)), z->tn, (int)Get_NAME_LENGTH(R_INF, z->tn), Get_NAME(R_INF, z->tn), "+-"[z->rev],
            //     (uint32_t)z->qns, z->qe, z->ts, z->te);
        } else {
            s = ((uint32_t)(z->qns)); e = z->qe;
            kv_push(uint64_t, (*ba), (s<<1));
            kv_push(uint64_t, (*ba), (e<<1)|1);
            z->el = 0;
            // fprintf(stderr, "-gum-[M::%s]\tqn::%u::%.*s\ttn::%u::%.*s\t%c\tq::[%u,%u)\tq::[%u,%u)\n", __func__, 
            //     (uint32_t)(z->qns>>32), (int)Get_NAME_LENGTH(R_INF, (uint32_t)(z->qns>>32)), Get_NAME(R_INF, (uint32_t)(z->qns>>32)), z->tn, (int)Get_NAME_LENGTH(R_INF, z->tn), Get_NAME(R_INF, z->tn), "+-"[z->rev],
            //     (uint32_t)z->qns, z->qe, z->ts, z->te);
        }
        /**
        s = ((uint32_t)(z->qns)); e = z->qe;
        // sc->a[z->tn]
        if(z->el) {
            // if((z->qns>>32) == 75 && z->tn == 59) {
            if(quick_exact_match(z, rref, qu, tu, sc)) {
                s = ((uint32_t)(z->qns)); e = z->qe;
                // fprintf(stderr, "-mm-[M::%s]\tqn::%u::%.*s\ttn::%u::%.*s\t%c\n", __func__, 
                // (uint32_t)(z->qns>>32), (int)Get_NAME_LENGTH(R_INF, (uint32_t)(z->qns>>32)), Get_NAME(R_INF, (uint32_t)(z->qns>>32)), z->tn, (int)Get_NAME_LENGTH(R_INF, z->tn), Get_NAME(R_INF, z->tn), "+-"[z->rev]);
            } else {
                s = ((uint32_t)(z->qns)); e = z->qe;
                // fprintf(stderr, "-um-[M::%s]\tqn::%u::%.*s\ttn::%u::%.*s\t%c\n", __func__, 
                // (uint32_t)(z->qns>>32), (int)Get_NAME_LENGTH(R_INF, (uint32_t)(z->qns>>32)), Get_NAME(R_INF, (uint32_t)(z->qns>>32)), z->tn, (int)Get_NAME_LENGTH(R_INF, z->tn), Get_NAME(R_INF, z->tn), "+-"[z->rev]);
            }
            // }
        } 
        **/
    }


    v = be; vn = v->n;
    radix_sort_ec64(v->a, v->a+v->n);
    for (k = 0, dp = 0, st = ed = 0; k < vn; ++k) {
        old_dp = dp;
        ///if a[j] is qe
        if (v->a[k]&1) --dp;
        else ++dp;

        ed = v->a[k]>>1;
        if(ed > st) {
            m = st; m <<= 32; m |= ((uint64_t)ed);
            kv_push(uint64_t, (*v), m); 
            kv_push(uint64_t, (*v), old_dp); 
            if((old_dp + 1) < occ_exact) return 0;///+1 for self
        }
        st = ed;
    }
    ed = ql; old_dp = dp;
    if(ed > st) {
        m = st; m <<= 32; m |= ((uint64_t)ed);
        kv_push(uint64_t, (*v), m); 
        kv_push(uint64_t, (*v), old_dp); 
        if((old_dp + 1) < occ_exact) return 0;///+1 for self
    }

    for (k = vn, m = 0; k < v->n; k++) {
        v->a[m++] = v->a[k];
    }
    v->n = m;


    v = ba; vn = v->n;
    radix_sort_ec64(v->a, v->a+v->n);
    for (k = 0, dp = 0, st = ed = 0; k < vn; ++k) {
        old_dp = dp;
        ///if a[j] is qe
        if (v->a[k]&1) --dp;
        else ++dp;

        ed = v->a[k]>>1;
        if(ed > st) {
            m = st; m <<= 32; m |= ((uint64_t)ed);
            kv_push(uint64_t, (*v), m); 
            kv_push(uint64_t, (*v), old_dp); 
        }
        st = ed;
    }
    ed = ql; old_dp = dp;
    if(ed > st) {
        m = st; m <<= 32; m |= ((uint64_t)ed);
        kv_push(uint64_t, (*v), m); 
        kv_push(uint64_t, (*v), old_dp); 
    }

    for (k = vn, m = 0; k < v->n; k++) {
        v->a[m++] = v->a[k];
    }
    v->n = m;
    






    ///debug
    // v = be; 
    // for (k = 0; k < v->n; k += 2) {
    //     fprintf(stderr, "-be-[M::%s]\tq::[%lu,%u)\tocc::%lu\n", __func__, v->a[k]>>32, (uint32_t)v->a[k], v->a[k+1]);
    // }

    // v = ba; 
    // for (k = 0; k < v->n; k += 2) {
    //     fprintf(stderr, "-ba-[M::%s]\tq::[%lu,%u)\tocc::%lu\n", __func__, v->a[k]>>32, (uint32_t)v->a[k], v->a[k+1]);
    // }









    int64_t ke = 0, ka = 0, cc[2];
    qs = 0; qe = wl; qe = ((qe<=ql)?qe:ql);
    for (; qs < ql; ) {
        cc[0] = cal_cov_re(be, &ke, qs, qe); 
        cc[1] = cal_cov_re(ba, &ka, qs, qe);

        // fprintf(stderr, "[M::%s]\tq::[%ld,%ld)\tcc[0]::%ld\tcc[1]::%ld\n", __func__, qs, qe, cc[0], cc[1]);

        ff = 0;
        if((cc[0]) && (cc[0] > cc[1])) {
            cc[0] += qe - qs;///+(qe - qs) for self
            cc[1] += cc[0];
            if(cc[0] > (cc[1]*occ_exact_rate)) {
                ff = 1;
            }
        }

        if(ff == 0) return 0;
        // fprintf(stderr, "[M::%s-beg]\tq::[%ld,%ld)\tcc[0]::%ld\tcc[1]::%ld\n", __func__, qs, qe, cc[0], cc[1]);
        qs += wl; qe += wl; qe = ((qe<=ql)?qe:ql);
    }


    return 1;
}

static void worker_hap_dc_ec(void *data, long i, int tid)
{
    ec_ovec_buf_t0 *b = &(((ec_ovec_buf_t*)data)->a[tid]);
    // fprintf(stderr, "-0-[M::%s-beg] rid->%ld\n", __func__, i);
    // if (memcmp("m64012_190921_234837/139067658/ccs", Get_NAME((R_INF), i), Get_NAME_LENGTH((R_INF),i)) == 0) {
    //     fprintf(stderr, "-0-[M::%s-beg] rid->%ld\n", __func__, i);
    // } else if (memcmp("m64012_190921_234837/28968323/ccs", Get_NAME((R_INF), i), Get_NAME_LENGTH((R_INF),i)) == 0) {
    //     fprintf(stderr, "-1-[M::%s-beg] rid->%ld\n", __func__, i);
    // } else {
    //     return;
    // }
    // if(i != 2851) return;

    // if(scb.a[i].m < scc.a[i].n) {
    //     scb.a[i].m = scc.a[i].n;
    //     REALLOC(scb.a[i].a, scb.a[i].m);
    // }
    // scb.a[i].n = scc.a[i].n;
    // memcpy(scb.a[i].a, scc.a[i].a, scc.a[i].n*sizeof((*(scb.a[i].a))));

    scc.f[i] = 0;

    if(!(R_INF.paf[i].length)) return;
    // if(scc.f[i]) return;
    asg64_v buf0;

    recover_UC_Read(&b->self_read, &R_INF, i);

    copy_asg_arr(buf0, b->sp);
    if(gen_hap_dc_cov(&(b->v64), &buf0, &(R_INF.paf[i]), &R_INF, WINDOW_HC_FAST, 4, 0.7, &b->self_read, &b->ovlp_read, &scc, i)) {
        scc.f[i] = 1; b->cnt[0]++;
        // fprintf(stderr, "-mm-[M::%s]\tqn::%u::%.*s\n", __func__, (uint32_t)(i), (int)Get_NAME_LENGTH(R_INF, i), Get_NAME((R_INF), i));
    } else {
        scc.f[i] = 0; b->cnt[1]++;
        // fprintf(stderr, "-um-[M::%s]\tqn::%u::%.*s\n", __func__, (uint32_t)(i), (int)Get_NAME_LENGTH(R_INF, i), Get_NAME((R_INF), i));
    }
    copy_asg_arr(b->sp, buf0);

    refresh_ec_ovec_buf_t0(b, REFRESH_N);
}

static void worker_update_dc_ec(void *data, long i, int tid)
{
    ec_ovec_buf_t0 *b = &(((ec_ovec_buf_t*)data)->a[tid]);
    uint64_t k; ma_hit_t *z;
    // fprintf(stderr, "-0-[M::%s-beg] rid->%ld\n", __func__, i);
    // if (memcmp("m64012_190921_234837/139067658/ccs", Get_NAME((R_INF), i), Get_NAME_LENGTH((R_INF),i)) == 0) {
    //     fprintf(stderr, "-0-[M::%s-beg] rid->%ld\n", __func__, i);
    // } else if (memcmp("m64012_190921_234837/28968323/ccs", Get_NAME((R_INF), i), Get_NAME_LENGTH((R_INF),i)) == 0) {
    //     fprintf(stderr, "-1-[M::%s-beg] rid->%ld\n", __func__, i);
    // } else {
    //     return;
    // }
    // if(i != 2851) return;

    // if(scb.a[i].m < scc.a[i].n) {
    //     scb.a[i].m = scc.a[i].n;
    //     REALLOC(scb.a[i].a, scb.a[i].m);
    // }
    // scb.a[i].n = scc.a[i].n;
    // memcpy(scb.a[i].a, scc.a[i].a, scc.a[i].n*sizeof((*(scb.a[i].a))));


    if(!(R_INF.paf[i].length)) return;
    recover_UC_Read(&b->self_read, &R_INF, i);
    for (k = 0; k < R_INF.paf[i].length; k++) {
        z = &(R_INF.paf[i].buffer[k]);
        // if(((z->qns>>32) == 23863 && z->tn == 4) || ((z->qns>>32) == 4 && z->tn == 23863)) {
        //     fprintf(stderr, "[M::%s]\t%.*s(qid::%u)\tql::%lu\tq::[%u,%u)\t%c\t%.*s(tid::%u)\t\ttl::%lu\tt::[%u,%u)\tel::%u\n", __func__, 
        //         (int32_t)Get_NAME_LENGTH(R_INF, (z->qns>>32)), Get_NAME(R_INF, (z->qns>>32)), (uint32_t)(z->qns>>32), Get_READ_LENGTH(R_INF, (z->qns>>32)), 
        //         (uint32_t)z->qns, z->qe, "+-"[z->rev], 
        //         (int32_t)Get_NAME_LENGTH(R_INF, z->tn), Get_NAME(R_INF, z->tn), z->tn, Get_READ_LENGTH(R_INF, (z->tn)),  
        //         z->ts, z->te, z->el?1:0);
        // }
        if((z->el) && (quick_exact_match(z, &R_INF, &b->self_read, &b->ovlp_read, &scc))) {
            z->el = 1; b->cnt[0]++;
        } else {
            z->el = 0; b->cnt[1]++;
        }
    }

    refresh_ec_ovec_buf_t0(b, REFRESH_N);
}


void flip_paf_rc(uint64_t rid, ma_hit_t_alloc *paf, All_reads *rref)
{
    ma_hit_t *z; uint64_t k, m; int64_t ql = Get_READ_LENGTH((*rref), rid), tl, qs, qe, ts, te;
    for (k = m = 0; k < paf->length; k++) {
        z = &(paf->buffer[k]); tl = Get_READ_LENGTH((*rref), z->tn);
        qs = (uint32_t)z->qns; if(qs < 0) qs = 0; if(qs > ql) qs = ql;
        qe = z->qe; if(qe < 0) qe = 0; if(qe > ql) qe = ql;
        ts = z->ts; if(ts < 0) ts = 0; if(ts > tl) ts = tl;
        te = z->te; if(te < 0) te = 0; if(te > tl) te = tl;
        if(qe > qs && te > ts) {
            z->qns >>= 32; z->qns <<= 32;  
            z->qns |= ((uint64_t)(ql - qe));
            z->qe = ql - qs;
            z->ts = tl - te;
            z->te = tl - ts;
            paf->buffer[m++] = *z;
        }
    }
    paf->length = m;
}

static void worker_hap_post_rev(void *data, long i, int tid)
{
    ec_ovec_buf_t0 *b = &(((ec_ovec_buf_t*)data)->a[tid]);
    uint64_t k, l, kl, nn; char *a, c;
    // fprintf(stderr, "-0-[M::%s-beg] rid->%ld\n", __func__, i);
    // if (memcmp("m64012_190921_234837/139067658/ccs", Get_NAME((R_INF), i), Get_NAME_LENGTH((R_INF),i)) == 0) {
    //     fprintf(stderr, "-0-[M::%s-beg] rid->%ld\n", __func__, i);
    // } else if (memcmp("m64012_190921_234837/28968323/ccs", Get_NAME((R_INF), i), Get_NAME_LENGTH((R_INF),i)) == 0) {
    //     fprintf(stderr, "-1-[M::%s-beg] rid->%ld\n", __func__, i);
    // } else {
    //     return;
    // }
    // if(i != 2851) return;

    // if(scb.a[i].m < scc.a[i].n) {
    //     scb.a[i].m = scc.a[i].n;
    //     REALLOC(scb.a[i].a, scb.a[i].m);
    // }
    // scb.a[i].n = scc.a[i].n;
    // memcpy(scb.a[i].a, scc.a[i].a, scc.a[i].n*sizeof((*(scb.a[i].a))));

    flip_paf_rc(i, &(R_INF.paf[i]), &R_INF);
    flip_paf_rc(i, &(R_INF.reverse_paf[i]), &R_INF);

    recover_UC_Read(&b->self_read, &R_INF, i); 
    l = b->self_read.length; kl = l>>1; a = b->self_read.seq;
    for (k = nn = 0; k < kl; k++) {
        c = a[l-k-1]; a[l-k-1] = RC_CHAR(a[k]); a[k] = RC_CHAR(c);
        if(a[k] == 'N') nn++;
        if(a[l-k-1] == 'N') nn++;
    }
    if(l&1) {
        a[k] = RC_CHAR(a[k]); 
        if(a[k] == 'N') nn++;
    }

    ha_compress_base(Get_READ(R_INF, i), a, l, &R_INF.N_site[i], nn);

    if((asm_opt.is_sc) && (((uint64_t)i) < R_INF.tqn)) {
        retrive_bqual(&(b->v8q), NULL, i, -1, -1, 0, sc_bn);
        for (k = 0; k < l; k++) a[l - k - 1] = b->v8q.a[k];
        ha_compress_qual_bit(Get_QUAL(R_INF, i), a, l, sc_bn);
    }
}

static void worker_hap_dc_ec_gen(void *data, long i, int tid)
{
    
    ec_ovec_buf_t0 *b = &(((ec_ovec_buf_t*)data)->a[tid]);
    uint32_t high_occ = asm_opt.hom_cov * (2.0 - HA_KMER_GOOD_RATIO);
    uint32_t low_occ = asm_opt.hom_cov * HA_KMER_GOOD_RATIO;

    recover_UC_Read(&b->self_read, &R_INF, i); 

    // overlap_region_sort_y_id(b->olist.list, b->olist.length);
	// ma_hit_sort_tn(R_INF.paf[i].buffer, R_INF.paf[i].length);
	// ma_hit_sort_tn(R_INF.reverse_paf[i].buffer, R_INF.reverse_paf[i].length);

    // R_INF.paf[i].is_fully_corrected = is_well_cal(&b->v64, &(R_INF.paf[i]), &(R_INF.reverse_paf[i]), b->self_read.length, 4);

    // R_INF.paf[i].is_abnormal = abnormal;
    // R_INF.trio_flag[i] = AMBIGU;

    h_ec_lchain_fast(b->ab, i, &b->self_read, &b->ovlp_read, asm_opt.mz_win, asm_opt.k_mer_length, &R_INF, &b->olist, &b->clist, &b->exz, &b->v16, &b->v64, 0.02, 1, NULL, NULL, &(b->sp), &high_occ, &low_occ, 1, 1, 0, 2, UINT32_MAX, &(R_INF.paf[i]), &(R_INF.reverse_paf[i]), 0.866666);

    push_ff_ovlp(&(R_INF.paf[i]), &b->olist, 1, &R_INF, b->cnt);
    push_ff_ovlp(&(R_INF.reverse_paf[i]), &b->olist, 2, &R_INF, b->cnt);

    /**
    copy_asg_arr(buf0, b->sp);
    if(gen_hap_dc_cov(&(b->v64), &buf0, &(R_INF.paf[i]), &R_INF, WINDOW_HC_FAST, 4, 0.7, &b->self_read, &b->ovlp_read, &scc, i)) {
        scc.f[i] = 1; b->num_read_base++;
        // fprintf(stderr, "-mm-[M::%s]\tqn::%u::%.*s\n", __func__, (uint32_t)(i), (int)Get_NAME_LENGTH(R_INF, i), Get_NAME((R_INF), i));
    } else {
        scc.f[i] = 0; b->num_correct_base++;
        // fprintf(stderr, "-um-[M::%s]\tqn::%u::%.*s\n", __func__, (uint32_t)(i), (int)Get_NAME_LENGTH(R_INF, i), Get_NAME((R_INF), i));
    }
    copy_asg_arr(b->sp, buf0);
    **/
   refresh_ec_ovec_buf_t0(b, REFRESH_N);
}

inline uint64_t dd_ec_check(All_reads *rref, overlap_region_alloc *ol, uint64_t *oidx, uint64_t oidx_n, uint64_t *eidx, uint64_t eidx_n, uint64_t *e_des, uint32_t *osc, double sc_bd, ma_hit_t_alloc *in0, ma_hit_t_alloc *in1, char* rs, uint64_t rl, UC_Read *tu, double orate, uint8_t *push_oidx)
{
    overlap_region *z; uint64_t ok, ek, tid, trev, is_match, diff, strong, without_large_indel, shared_seed; int64_t om; ma_hit_t *p = NULL; uint64_t aq[2], at[2], bq[2], bt[2], ovlp, os, oe;
    uint64_t is_match_0, diff_0, strong_0, without_large_indel_0, shared_seed_0; int64_t mm_sc = INT32_MIN, sc, mm_ok; uint64_t mm_ol = ((uint64_t)-1), db_eidx = 0; uint8_t push_eidx = 0; uint64_t e_des_n = 0;


    if(oidx_n && eidx_n) {
        is_match_0 = diff_0 = strong_0 = without_large_indel_0 = shared_seed_0 = (uint64_t)-1; mm_ok = -1; db_eidx = 0;
        for (ok = 0; ok < oidx_n; ok++) {
            z = &(ol->list[(uint32_t)oidx[ok]]); tid = z->y_id; trev = z->y_pos_strand;
            z->non_homopolymer_errors = 0; 
            z->shared_seed = 0; z->is_match = 0;///may have bugs?
            // fprintf(stderr, "[M::%s]\trid::%u(%c)\t%.*s\tq::[%u,%u)\tt::[%u,%u)\n", __func__, 
            //     z->y_id, "+-"[z->y_pos_strand], (int)Get_NAME_LENGTH(R_INF, z->y_id), Get_NAME(R_INF, z->y_id),
            //     z->x_pos_s, z->x_pos_e + 1, z->y_pos_s, z->y_pos_e + 1);
            for (ek = 0; ek < eidx_n; ek++) {
                om = 1; ///z->shared_seed = 0; z->is_match = 0;
                if(eidx[ek]&1) {
                    p = &(in1->buffer[((uint32_t)eidx[ek])>>1]); is_match = 2;
                } else {
                    p = &(in0->buffer[((uint32_t)eidx[ek])>>1]); is_match = 1;
                    if(p->el) db_eidx++;
                }
                diff = 0; strong = p->ml; without_large_indel = p->no_l_indel; shared_seed = 0;///indicate exact match
                ///z->strong = p->ml; z->without_large_indel = p->no_l_indel;
                

                aq[0] = (uint32_t)p->qns; aq[1] = p->qe; 
                at[0] = p->ts; at[1] = p->te;

                bq[0] = z->x_pos_s; bq[1] = z->x_pos_e + 1;
                bt[0] = z->y_pos_s; bt[1] = z->y_pos_e + 1;
                // fprintf(stderr, "[a]\tq::[%lu,%lu)\tt::[%lu,%lu)\n", aq[0], aq[1], at[0], at[1]);
                // fprintf(stderr, "[b]\tq::[%lu,%lu)\tt::[%lu,%lu)\n", bq[0], bq[1], bt[0], bt[1]);
            
                os = MAX(aq[0], bq[0]); oe = MIN(aq[1], bq[1]);
                ovlp = ((oe>os)? (oe-os):0);
                if(!((ovlp) && (ovlp >= ((aq[1] - aq[0])*orate)) && ((ovlp >= ((bq[1] - bq[0])*orate))))) om = 0;
                diff += ((aq[1] - aq[0]) - ovlp) + ((bq[1] - bq[0]) - ovlp);
                // fprintf(stderr, "[q]\tqos::[%lu,%lu)\tovlp::%lu\tdiff::%lu\n", os, oe, ovlp, diff);
                // z->non_homopolymer_errors += ((aq[1] - aq[0]) - ovlp);

                os = MAX(at[0], bt[0]); oe = MIN(at[1], bt[1]);
                ovlp = ((oe>os)? (oe-os):0);
                if(!((ovlp) && (ovlp >= ((at[1] - at[0])*orate)) && ((ovlp >= ((bt[1] - bt[0])*orate))))) om = 0;
                diff += ((at[1] - at[0]) - ovlp) + ((bt[1] - bt[0]) - ovlp);
                // fprintf(stderr, "[t]\ttos::[%lu,%lu)\tovlp::%lu\tdiff::%lu\n", os, oe, ovlp, diff);
                // z->non_homopolymer_errors += ((at[1] - at[0]) - ovlp);
                // fprintf(stderr, "[M::%s]\trid::%u(%c)\t%.*s\tq::[%u,%u)\tt::[%u,%u)\ttype::%lu\tel::%u\tdiff::%lu\n", __func__, p->tn, "+-"[p->rev], (int)Get_NAME_LENGTH(R_INF, p->tn), Get_NAME(R_INF, p->tn),
                // (uint32_t)p->qns, p->qe, p->ts, p->te, is_match, ((p->el) && (is_match == 1))?1:0, diff);

                if(om) {
                    // if(is_match == 1 && p->el == 1) p->el = 0;
                    if((bq[1] - bq[0]) == (bt[1] - bt[0])) {
                        resize_UC_Read(tu, bt[1] - bt[0]);
                        recover_UC_Read_sub_region(tu->seq, bt[0], bt[1] - bt[0], trev, rref, tid);
                        if(exact_ec_check(rs, rl, tu->seq, bt[1] - bt[0], bq[0], bq[1], 0, bt[1] - bt[0])) {
                            if(is_match == 2) {
                                strong = 0; without_large_indel = 1;
                                // z->strong = 0; z->without_large_indel = 1;
                            }
                            is_match = 1; shared_seed = 1;///z->shared_seed = 1;
                        }
                    }
                    // z->is_match = is_match;
                } else {
                    is_match = 0;
                }

                if(om) {
                    sc = diff; sc = - sc; sc *= sc_bd; sc += osc[(uint32_t)oidx[ok]];
                    // fprintf(stderr, "[M::%s]\tsc::%ld\tdiff::%lu\tosc[]::%u\n", __func__, sc, diff, osc[(uint32_t)oidx[ok]]);
                    if((sc > mm_sc) || ((sc == mm_sc) && (mm_ol < (z->x_pos_e+1-z->x_pos_s)))) {
                        mm_sc = sc; mm_ol = z->x_pos_e+1-z->x_pos_s; ///mm_k = s;
                        is_match_0 = is_match; 
                        diff_0 = diff; 
                        strong_0 = strong;
                        without_large_indel_0 = without_large_indel;
                        shared_seed_0 = shared_seed;
                        mm_ok = ok;
                    }
                }
            }   
        }

        if(mm_ok != -1) {///found an intersection
            z = &(ol->list[(uint32_t)oidx[mm_ok]]);
            z->is_match = is_match_0;
            z->non_homopolymer_errors = diff_0;
            z->strong = strong_0;
            z->without_large_indel = without_large_indel_0;
            z->shared_seed = shared_seed_0;
            // fprintf(stderr, "mm_ok->[M::%s]\trid::%u(%c)\t%.*s\tq::[%u,%u)\tt::[%u,%u)\n", __func__, 
            //     z->y_id, "+-"[z->y_pos_strand], (int)Get_NAME_LENGTH(R_INF, z->y_id), Get_NAME(R_INF, z->y_id),
            //     z->x_pos_s, z->x_pos_e + 1, z->y_pos_s, z->y_pos_e + 1);
            if(oidx_n > 1) {
                for (ok = 0; ok < oidx_n; ok++) {
                    if(ok == ((uint64_t)mm_ok)) continue;
                    z = &(ol->list[(uint32_t)oidx[ok]]);
                    z->is_match = (uint8_t)-1;///skipped
                }
            }

            if(db_eidx && eidx_n > 1 && e_des) {
                z = &(ol->list[(uint32_t)oidx[mm_ok]]);
                for (ek = 0; ek < eidx_n; ek++) {
                    if(eidx[ek]&1) {
                        p = &(in1->buffer[((uint32_t)eidx[ek])>>1]); is_match = 2;
                    } else {
                        p = &(in0->buffer[((uint32_t)eidx[ek])>>1]); is_match = 1;
                    }

                    if(is_match == 1 && p->el) {
                        aq[0] = (uint32_t)p->qns; aq[1] = p->qe; 
                        at[0] = p->ts; at[1] = p->te;
        
                        bq[0] = z->x_pos_s; bq[1] = z->x_pos_e + 1;
                        bt[0] = z->y_pos_s; bt[1] = z->y_pos_e + 1;
                    
                        os = MAX(aq[0], bq[0]); oe = MIN(aq[1], bq[1]);
                        ovlp = ((oe>os)? (oe-os):0);
                        if(!((ovlp) && (ovlp >= ((aq[1] - aq[0])*orate)) && ((ovlp >= ((bq[1] - bq[0])*orate))))) {
                            e_des[e_des_n++] = eidx[ek];
                            continue;
                        }
        
                        os = MAX(at[0], bt[0]); oe = MIN(at[1], bt[1]);
                        ovlp = ((oe>os)? (oe-os):0);
                        if(!((ovlp) && (ovlp >= ((at[1] - at[0])*orate)) && ((ovlp >= ((bt[1] - bt[0])*orate))))) {
                            e_des[e_des_n++] = eidx[ek];
                            continue;
                        }
                    }
                }
            }
        } else {///no intersection, need to double check both sides
            push_eidx = 1; (*push_oidx) = 1;
        }
    } else if(oidx_n) {///in this case, if ol->list is non-exact matched, directly discard them; so no need to to consider the score of chain
        for (ok = 0; ok < oidx_n; ok++) {
            z = &(ol->list[(uint32_t)oidx[ok]]); 
            z->non_homopolymer_errors = 0; 
            z->shared_seed = 0; z->is_match = 0;///may have bugs?
        }
        (*push_oidx) = 1;
    } else {
        push_eidx = 1;
    }

    
    if(e_des && eidx && push_eidx) {
        for (ek = 0; ek < eidx_n; ek++) {
            if(eidx[ek]&1) {
                p = &(in1->buffer[((uint32_t)eidx[ek])>>1]); is_match = 2;
            } else {
                p = &(in0->buffer[((uint32_t)eidx[ek])>>1]); is_match = 1;
            }
            if(is_match == 1 && p->el) {
                e_des[e_des_n++] = eidx[ek];
            }
        }
    }
    
    return e_des_n;
}

inline void push_overlap_region_by_ma_hit_t_0(overlap_region_alloc *ol, ma_hit_t *p, uint32_t rid, bit_extz_t *exz)
{
    overlap_region *z = NULL;
    kv_pushp_ol(overlap_region, (*ol), &z);
    clear_fake_cigar(&(z->f_cigar));
    clear_window_list_alloc(&(z->w_list));
    clear_window_list_alloc(&(z->boundary_cigars));
    
    z->x_id = rid; z->y_id = p->tn;
    z->x_pos_strand = 0; z->y_pos_strand = p->rev;
    z->x_pos_s = (uint32_t)p->qns;
    z->x_pos_e = p->qe - 1;
    z->y_pos_s = p->ts;
    z->y_pos_e = p->te - 1;

    z->align_length = z->overlapLen = z->x_pos_e + 1 - z->x_pos_s;
    z->non_homopolymer_errors = 0;

    z->is_match = 1; z->shared_seed = 1;
    z->strong = p->ml; z->without_large_indel = p->no_l_indel;

    set_exact_exz(exz, z->x_pos_s, z->x_pos_e + 1, z->y_pos_s, z->y_pos_e + 1); push_alnw(z, exz);
}

void h_ec_lchain_fast_new_adv(uint32_t rid, UC_Read *qu, UC_Read *tu, All_reads *rref, overlap_region_alloc *ol, Candidates_list *cl, bit_extz_t *exz, 
    ma_hit_t_alloc *in0, ma_hit_t_alloc *in1, double orate, uint64_t max_n_chain, uint64_t max_n_chain_f, uint64_t chain_cutoff, int64_t wl, asg64_v *srt, uint64_t ocw, asg32_v *v32)
{
    if(ol->length <= 0) return;
    uint32_t *a_cu = NULL, *a_ci = NULL, *ocn = NULL, *osc = NULL; uint64_t  *idx_cu = NULL, n_cu = 0;
    uint64_t ok, o_l, ek, e_l, *osrt_a, osrt_n, *esrt_a, esrt_n, esrt_m, oid, eid; v32->n = 0;
    uint64_t m, *ei, en, *oi, on, m0; overlap_region *z; ma_hit_t *oa = NULL, *p = NULL; char* rs = qu->seq; uint64_t rl = qu->length; uint8_t push_oidx = 0;
    ggen_chain_clus_0(ol, v32, NULL, &a_cu, &a_ci, &ocn, &osc, &idx_cu, &n_cu);

    srt->n = 0; kv_resize(uint64_t, *srt, (in0->length + in1->length));
    oa = in0->buffer; on = in0->length; m0 = 0;
    for (ok = 0; ok < on; ok++) {
        m = oa[ok].tn; m <<= 1; m |= oa[ok].rev; 
        m <<= 32; m |= (ok<<1); m |= m0;
        kv_push(uint64_t, (*srt), m);
    }
    oa = in1->buffer; on = in1->length; m0 = 1;
    for (ok = 0; ok < on; ok++) {
        m = oa[ok].tn; m <<= 1; m |= oa[ok].rev; 
        m <<= 32; m |= (ok<<1); m |= m0;
        kv_push(uint64_t, (*srt), m);
    }

    ///for on-the-fly chains
    kv_resize(uint64_t, *srt, (srt->n + ol->length));
    ei = srt->a; en = srt->n; oi = srt->a + srt->n; on = ol->length;
    srt->n += ol->length;
    for (ok = 0; ok < on; ok++) {
        z = &(ol->list[ok]); z->is_match = z->strong = z->without_large_indel = z->shared_seed = 0;
        z->overlapLen = z->non_homopolymer_errors; ///just for chain filtering, keeping the start pos of this chain
        oi[ok] = z->y_id; oi[ok] <<= 1; oi[ok] |= z->y_pos_strand;
        oi[ok] <<= 32; oi[ok] |= ok;
        // fprintf(stderr, "[M::%s::ok->%lu]\trid::%u(%c)\t%.*s\tq::[%u,%u)\tt::[%u,%u)\n", __func__, ok, z->y_id, "+-"[z->y_pos_strand], (int)Get_NAME_LENGTH(R_INF, z->y_id), Get_NAME(R_INF, z->y_id),
        // z->x_pos_s, z->x_pos_e + 1, z->y_pos_s, z->y_pos_e + 1);
    }

    radix_sort_ec64(ei, ei + en); radix_sort_ec64(oi, oi + on);

    // for (ok = 0; ok < on; ok++) {
    //     z = &(ol->list[(uint32_t)oi[ok]]);
    //     fprintf(stderr, "[M::%s::ok->%lu]\trid::%u(%c)\t%.*s\tq::[%u,%u)\tt::[%u,%u)\n", __func__, ok, z->y_id, "+-"[z->y_pos_strand], (int)Get_NAME_LENGTH(R_INF, z->y_id), Get_NAME(R_INF, z->y_id),
    //     z->x_pos_s, z->x_pos_e + 1, z->y_pos_s, z->y_pos_e + 1);
    // }
    // for (ek = 0; ek < en; ek++) {
    //     if(ei[ek]&1) {
    //         p = &(in1->buffer[((uint32_t)ei[ek])>>1]); m0 = 2;
    //     } else {
    //         p = &(in0->buffer[((uint32_t)ei[ek])>>1]); m0 = 1;
    //     }
        
    //     fprintf(stderr, "[M::%s::ek->%lu]\trid::%u(%c)\t%.*s\tq::[%u,%u)\tt::[%u,%u)\ttype::%lu\tel::%u\n", __func__, ek, p->tn, "+-"[p->rev], (int)Get_NAME_LENGTH(R_INF, p->tn), Get_NAME(R_INF, p->tn),
    //     (uint32_t)p->qns, p->qe, p->ts, p->te, m0, ((p->el) && (m0 == 1))?1:0);
    // }
    


    ok = 1; o_l = 0; ek = 1; e_l = 0; oid = eid = (uint64_t)-1;
    osrt_a = NULL; osrt_n = 0; esrt_a = NULL; esrt_n = 0; 
    esrt_m = 0; ///keep overlaps in in0 that are exactly the match but not covered by ol
    while ((ok <= on) || (ek <= en)) {
        // uint64_t o_l0 = o_l, e_l0 = e_l, dbg_k;;
        if(!osrt_a) {
            for (osrt_a = oi + o_l, osrt_n = 0; ok <= on; ok++) {
                if (ok == on || (oi[ok]>>32) != (oi[o_l]>>32)) {
                    osrt_n = ok - o_l; oid = oi[o_l]>>32;
                    // fprintf(stderr, "+[M::%s::okl]\to_l::%lu\tok::%lu\ton::%lu\n", __func__, o_l, ok, on);
                    // fprintf(stderr, "-[M::%s::okl]\to_l::%lu\tok::%lu\ton::%lu\toid::%lu\n", __func__, o_l, ok, on, oid);
                    o_l = ok; ok++;
                    break;
                }
            }
        }
        if(!esrt_a) {
            for (esrt_a = ei + e_l, esrt_n = 0; ek <= en; ek++) {
                if (ek == en || (ei[ek]>>32) != (ei[e_l]>>32)) {
                    esrt_n = ek - e_l; eid = ei[e_l]>>32;
                    // fprintf(stderr, "+[M::%s::ekl]\te_l::%lu\tek::%lu\ten::%lu\n", __func__, e_l, ek, en);
                    // fprintf(stderr, "-[M::%s::ekl]\te_l::%lu\tek::%lu\ten::%lu\teid::%lu\n", __func__, e_l, ek, en, eid);
                    e_l = ek; ek++;
                    break;
                }
            }
        }

        oid = eid = (uint64_t)-1;
        if(osrt_n) oid = osrt_a[0]>>32;
        if(esrt_n) eid = esrt_a[0]>>32;

        // if(osrt_n) {
        //     for (dbg_k = 0; dbg_k < osrt_n; dbg_k++) {
        //         z = &(ol->list[(uint32_t)osrt_a[dbg_k]]);
        //         fprintf(stderr, "[M::%s::ok->%lu]\trid::%u(%c)\t%.*s\tq::[%u,%u)\tt::[%u,%u)\n", __func__, dbg_k + o_l0, z->y_id, "+-"[z->y_pos_strand], (int)Get_NAME_LENGTH(R_INF, z->y_id), Get_NAME(R_INF, z->y_id),
        //         z->x_pos_s, z->x_pos_e + 1, z->y_pos_s, z->y_pos_e + 1);
        //     }
        // }
        // if(esrt_n) {
        //     for (dbg_k = 0; dbg_k < esrt_n; dbg_k++) {
        //         if(esrt_a[dbg_k]&1) {
        //             p = &(in1->buffer[((uint32_t)esrt_a[dbg_k])>>1]); m0 = 2;
        //         } else {
        //             p = &(in0->buffer[((uint32_t)esrt_a[dbg_k])>>1]); m0 = 1;
        //         }
        //         fprintf(stderr, "[M::%s::ek->%lu]\trid::%u(%c)\t%.*s\tq::[%u,%u)\tt::[%u,%u)\ttype::%lu\tel::%u\n", __func__, dbg_k + e_l0, p->tn, "+-"[p->rev], (int)Get_NAME_LENGTH(R_INF, p->tn), Get_NAME(R_INF, p->tn),
        //         (uint32_t)p->qns, p->qe, p->ts, p->te, m0, ((p->el) && (m0 == 1))?1:0);
        //     }
        // }
        // fprintf(stderr, "[M::%s]\toid::%lu(%c)\toidx::[%lu(%d),%lu)\to_l::%lu\teid::%lu(%c)\teidx::[%lu(%d),%lu)\te_l::%lu\n\n", __func__, oid>>1, "+-"[oid&1], o_l0, (int32_t)(osrt_a?osrt_a-oi:-1), o_l0 + osrt_n, o_l, 
        // eid>>1, "+-"[eid&1], e_l0, (int32_t)(esrt_a?esrt_a-ei:-1), e_l0 + esrt_n, e_l);
        

        if(osrt_n && esrt_n) {
            if(oid == eid) {
                esrt_m += dd_ec_check(rref, ol, osrt_a, osrt_n, esrt_a, esrt_n, ei + esrt_m, osc, 8, in0, in1, rs, rl, tu, orate, &push_oidx);
                osrt_a = NULL; osrt_n = 0; esrt_a = NULL; esrt_n = 0;
            } else if(oid < eid) {
                dd_ec_check(rref, ol, osrt_a, osrt_n, NULL, 0, NULL, osc, 8, in0, in1, rs, rl, tu, orate, &push_oidx);
                osrt_a = NULL; osrt_n = 0;
            } else {
                esrt_m += dd_ec_check(rref, ol, NULL, 0, esrt_a, esrt_n, ei + esrt_m, osc, 8, in0, in1, rs, rl, tu, orate, &push_oidx);
                esrt_a = NULL; esrt_n = 0;
            }
        } else if(osrt_n) {///ek > en
            dd_ec_check(rref, ol, osrt_a, osrt_n, NULL, 0, NULL, osc, 8, in0, in1, rs, rl, tu, orate, &push_oidx);
            osrt_a = NULL; osrt_n = 0;
        } else if(esrt_n) {///ok > on
            esrt_m += dd_ec_check(rref, ol, NULL, 0, esrt_a, esrt_n, ei + esrt_m, osc, 8, in0, in1, rs, rl, tu, orate, &push_oidx);
            esrt_a = NULL; esrt_n = 0;
        }
        // if(esrt_m) fprintf(stderr, "[M::%s] add-esrt_m::%lu\n", __func__, esrt_m);
    }

    // fprintf(stderr, "[M::%s] rid::%u, esrt_m::%lu, en::%lu\n", __func__, rid, esrt_m, en);
    

    if(push_oidx) {////go for verify
        gen_hc_r_alin_adp_smp_ff_ec(ol, cl, rref, qu, tu, exz, rid, srt, ocw, ocn, osc, max_n_chain>0?max_n_chain:1, max_n_chain_f>0?max_n_chain_f:1, chain_cutoff, ((asm_opt.hom_cov*HC_AV_MIN)>0)?(asm_opt.hom_cov*HC_AV_MIN):(1));
        ei = srt->a; en = srt->n - ol->length; 
        oi = srt->a + srt->n - ol->length; on = ol->length;
    }

    if(esrt_m) {///exact matches but not intersected with ol
        for (ek = 0; ek < esrt_m; ek++) {
            // if(!((ei[ek]&1) == 0)) {
            //     fprintf(stderr, "[M::%s] rid::%u, esrt_m::%lu, en::%lu, ek::%lu\n", __func__, rid, esrt_m, en, ek);
            // }
            assert((ei[ek]&1) == 0);
            p = &(in0->buffer[((uint32_t)ei[ek])>>1]);
            assert(p->el == 1);
            push_overlap_region_by_ma_hit_t_0(ol, p, rid, exz);
        }
    }

    overlap_region_sort_y_id(ol->list, ol->length);

    if(ol->length > 1) {///for duplicated chains
        uint64_t mm_k, s, k, l; int64_t mm_sc, sc; overlap_region t;
        for (k = 1, l = m = 0; k <= ol->length; k++) {
            if(k == ol->length || ol->list[k].y_id != ol->list[l].y_id) {
                mm_k = l;
                if(k - l > 1) {
                    for (s = l, mm_sc = INT32_MIN, mm_k = ((uint64_t)-1); s < k; s++) {
                        z = &(ol->list[s]);
                        sc = z->non_homopolymer_errors; sc = - sc;
                        if((sc > mm_sc) || ((sc == mm_sc) && ((ol->list[mm_k].x_pos_e+1-ol->list[mm_k].x_pos_s) < (z->x_pos_e+1-z->x_pos_s)))) {
                            mm_sc = sc; mm_k = s;
                        }
                    }
                }
                if(mm_k != ((uint64_t)-1)) {
                    if(mm_k != m) {
                        t = ol->list[mm_k];
                        ol->list[mm_k] = ol->list[m];
                        ol->list[m] = t;
                    }
                    m++;
                }
                l = k;
            }
        }
        ol->length = m;
    }
}


static void worker_hap_dc_ec_gen_new_idx(void *data, long i, int tid)
{
    
    ec_ovec_buf_t0 *b = &(((ec_ovec_buf_t*)data)->a[tid]);
    uint32_t high_occ = asm_opt.hom_cov * (2.0 - HA_KMER_GOOD_RATIO);
    uint32_t low_occ = asm_opt.hom_cov * HA_KMER_GOOD_RATIO; uint32_t qlen = 0, qw = 0;
    // if(i != 4318) return;

    recover_UC_Read(&b->self_read, &R_INF, i); qlen = b->self_read.length; 
    qw = ((qlen < (COV_W_AC<<1))?(qlen>>1):(COV_W_AC)); if(!qw) qw = 1;

    // h_ec_lchain(b->ab, i, b->self_read.seq, b->self_read.length, asm_opt.mz_win, asm_opt.k_mer_length, &R_INF, &b->olist, &b->clist, /**0.02**/0.001, asm_opt.max_n_chain, 1, NULL, NULL, &(b->sp), &high_occ, &low_occ, 1, 1, 3, 0.7, 2, 32, COV_W, 0);
    h_ec_lchain(b->ab, i, b->self_read.seq, b->self_read.length, asm_opt.mz_win, asm_opt.k_mer_length, &R_INF, &b->olist, &b->clist, /**0.02**/0.001, asm_opt.max_n_chain, 1, NULL, NULL, &(b->sp), &high_occ, &low_occ, 1, 1, 3, 0.7, 2, 32, COV_W, 1);

    
    // overlap_region_sort_y_id(b->olist.list, b->olist.length);
	// ma_hit_sort_tn(R_INF.paf[i].buffer, R_INF.paf[i].length);
	// ma_hit_sort_tn(R_INF.reverse_paf[i].buffer, R_INF.reverse_paf[i].length);

    // R_INF.paf[i].is_fully_corrected = is_well_cal(&b->v64, &(R_INF.paf[i]), &(R_INF.reverse_paf[i]), b->self_read.length, 4);

    // R_INF.paf[i].is_abnormal = abnormal;
    // R_INF.trio_flag[i] = AMBIGU;

    // overlap_region_sort_y_id(b->olist.list, b->olist.length);
    // h_ec_lchain_fast_new(b->ab, i, &b->self_read, &b->ovlp_read, &R_INF, &b->olist, &b->clist, &b->exz, &b->v16, &b->v64, &(R_INF.paf[i]), &(R_INF.reverse_paf[i]), 0.866666);
    h_ec_lchain_fast_new_adv(i, &b->self_read, &b->ovlp_read, &R_INF, &b->olist, &b->clist, &b->exz, &(R_INF.paf[i]), &(R_INF.reverse_paf[i]), 0.866666, 
    asm_opt.max_n_chain, asm_opt.max_n_chain*HC_MF_R, asm_opt.chn_occ, (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), &b->v64, qw, &b->v32);

    if((asm_opt.is_ont) && (is_uncorrected_read(&b->olist, &b->v64, qlen, 1600))) {
        b->olist.length = 0;
        // fprintf(stderr, "[M::%s] rid::%ld\t%.*s\n", __func__, i, (int)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i));
    }

    push_ff_ovlp(&(R_INF.paf[i]), &b->olist, 1, &R_INF, b->cnt);
    push_ff_ovlp(&(R_INF.reverse_paf[i]), &b->olist, 2, &R_INF, b->cnt);

    /**
    copy_asg_arr(buf0, b->sp);
    if(gen_hap_dc_cov(&(b->v64), &buf0, &(R_INF.paf[i]), &R_INF, WINDOW_HC_FAST, 4, 0.7, &b->self_read, &b->ovlp_read, &scc, i)) {
        scc.f[i] = 1; b->num_read_base++;
        // fprintf(stderr, "-mm-[M::%s]\tqn::%u::%.*s\n", __func__, (uint32_t)(i), (int)Get_NAME_LENGTH(R_INF, i), Get_NAME((R_INF), i));
    } else {
        scc.f[i] = 0; b->num_correct_base++;
        // fprintf(stderr, "-um-[M::%s]\tqn::%u::%.*s\n", __func__, (uint32_t)(i), (int)Get_NAME_LENGTH(R_INF, i), Get_NAME((R_INF), i));
    }
    copy_asg_arr(b->sp, buf0);
    **/
   refresh_ec_ovec_buf_t0(b, REFRESH_N);
//    exit(1);
}

 void worker_hap_dc_ec_gen_new_idx_back(void *data, long i, int tid)
{
    
    ec_ovec_buf_t0 *b = &(((ec_ovec_buf_t*)data)->a[tid]);
    uint32_t high_occ = asm_opt.hom_cov * (2.0 - HA_KMER_GOOD_RATIO);
    uint32_t low_occ = asm_opt.hom_cov * HA_KMER_GOOD_RATIO; uint32_t qlen = 0;

    recover_UC_Read(&b->self_read, &R_INF, i); qlen = b->self_read.length; 

    h_ec_lchain(b->ab, i, b->self_read.seq, b->self_read.length, asm_opt.mz_win, asm_opt.k_mer_length, &R_INF, &b->olist, &b->clist, /**0.02**/0.001, asm_opt.max_n_chain, 1, NULL, NULL, &(b->sp), &high_occ, &low_occ, 1, 1, 3, 0.7, 2, 32, COV_W, 0);

    overlap_region_sort_y_id(b->olist.list, b->olist.length);

    // overlap_region_sort_y_id(b->olist.list, b->olist.length);
	// ma_hit_sort_tn(R_INF.paf[i].buffer, R_INF.paf[i].length);
	// ma_hit_sort_tn(R_INF.reverse_paf[i].buffer, R_INF.reverse_paf[i].length);

    // R_INF.paf[i].is_fully_corrected = is_well_cal(&b->v64, &(R_INF.paf[i]), &(R_INF.reverse_paf[i]), b->self_read.length, 4);

    // R_INF.paf[i].is_abnormal = abnormal;
    // R_INF.trio_flag[i] = AMBIGU;

    h_ec_lchain_fast_new(b->ab, i, &b->self_read, &b->ovlp_read, &R_INF, &b->olist, &b->clist, &b->exz, &b->v16, &b->v64, &(R_INF.paf[i]), &(R_INF.reverse_paf[i]), 0.866666);

    if((asm_opt.is_ont) && (is_uncorrected_read(&b->olist, &b->v64, qlen, 1600))) {
        b->olist.length = 0;
        // fprintf(stderr, "[M::%s] rid::%ld\t%.*s\n", __func__, i, (int)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i));
    }

    push_ff_ovlp(&(R_INF.paf[i]), &b->olist, 1, &R_INF, b->cnt);
    push_ff_ovlp(&(R_INF.reverse_paf[i]), &b->olist, 2, &R_INF, b->cnt);

    /**
    copy_asg_arr(buf0, b->sp);
    if(gen_hap_dc_cov(&(b->v64), &buf0, &(R_INF.paf[i]), &R_INF, WINDOW_HC_FAST, 4, 0.7, &b->self_read, &b->ovlp_read, &scc, i)) {
        scc.f[i] = 1; b->num_read_base++;
        // fprintf(stderr, "-mm-[M::%s]\tqn::%u::%.*s\n", __func__, (uint32_t)(i), (int)Get_NAME_LENGTH(R_INF, i), Get_NAME((R_INF), i));
    } else {
        scc.f[i] = 0; b->num_correct_base++;
        // fprintf(stderr, "-um-[M::%s]\tqn::%u::%.*s\n", __func__, (uint32_t)(i), (int)Get_NAME_LENGTH(R_INF, i), Get_NAME((R_INF), i));
    }
    copy_asg_arr(b->sp, buf0);
    **/
   refresh_ec_ovec_buf_t0(b, REFRESH_N);
}

uint32_t is_chemical_r(ma_hit_t_alloc *ov, asg64_v *idx, int64_t len, int64_t cov, int64_t frank_len)
{
    uint64_t k, s, e; int64_t dp, old_dp, st = 0, ed, s0, s1, e0, e1, rr;
    if((frank_len) > (len *0.01)) frank_len = len *0.01;
    for (k = idx->n = 0; k < ov->length; k++) {
        s = (uint32_t)ov->buffer[k].qns; e = ov->buffer[k].qe;
        kv_push(uint64_t, (*idx), (s<<1));
        kv_push(uint64_t, (*idx), (e<<1)|1);
    }

    radix_sort_ec64(idx->a, idx->a + idx->n); s0 = s1 = e0 = e1 = rr = -1;
    for (k = 0, dp = 0, st = ed = 0; k < idx->n; ++k) {
        old_dp = dp;
        ///if a[j] is qe
        if (idx->a[k]&1) --dp;
        else ++dp;

        ed = idx->a[k]>>1;
        if(ed > st) {
            if(old_dp <= cov) {
                rr = 1;
            } else {
                if(s0 < 0) {
                    s0 = st; s1 = ed;
                }
                e0 = st; e1 = ed;
            }
        }
        st = ed;
    }


    ed = len; old_dp = dp;
    if(ed > st) {
        if(old_dp <= cov) {
            rr = 1;
        } else {
            if(s0 < 0) {
                s0 = st; s1 = ed;
            }
            e0 = st; e1 = ed;
        }
    }


    if((s0 != e0) && (s1 != e1) && (s0 <= frank_len) && ((len - e1) <= frank_len) && (rr > 0)) {
        for (k = 0, dp = 0, st = ed = 0; k < idx->n; ++k) {
            old_dp = dp;
            ///if a[j] is qe
            if (idx->a[k]&1) --dp;
            else ++dp;

            ed = idx->a[k]>>1;
            if(ed > st) {
                if((old_dp <= cov) && (st >= s0) && (ed <= e1)) {
                    // if((ov->buffer[0].qns>>32) == 3364) fprintf(stderr, "[M::%s]\tlf::[%ld,%ld)\trt::[%ld,%ld)\tmd::[%ld,%ld)\tcov::%ld\n", __func__, s0, s1, e0, e1, st, ed, old_dp);
                    return 1;
                }
            }
            st = ed;
        }


        ed = len; old_dp = dp;
        if(ed > st) {
            if((old_dp <= cov) && (st >= s0) && (ed <= e1)) {
                // if((ov->buffer[0].qns>>32) == 3364) fprintf(stderr, "[M::%s]\tlf::[%ld,%ld)\trt::[%ld,%ld)\tmd::[%ld,%ld)\tcov::%ld\n", __func__, s0, s1, e0, e1, st, ed, old_dp);
                return 1;
            }
        }
    }
    
    return 0;
}


uint32_t is_chemical_r_adv(ma_hit_t_alloc *ov, asg64_v *idx, int64_t len, int64_t cov, int64_t cut_len, double dup_rate, uint64_t is_del)
{
    uint64_t k, s, e; int64_t dp, old_dp, st = 0, ed, s0, e0, rr, lt;
    for (k = idx->n = 0; k < ov->length; k++) {
        if(is_del && ov->buffer[k].del) continue;
        s0 = (uint32_t)ov->buffer[k].qns; e0 = ov->buffer[k].qe;
        if(s0 > 0) s0 += cut_len;
        if(e0 < len) e0 -= cut_len;
        if(e0 <= s0) continue;
        s = s0; e = e0;

        lt = Get_READ_LENGTH((R_INF), ov->buffer[k].tn);
        rr = (lt >= len)?(lt - len):(len - lt);
        if((rr <= (len*dup_rate)) && (rr <= (lt*dup_rate)) && (ov->buffer[k].rev)) {
            dp = (ov->buffer[k].qe) - ((uint32_t)ov->buffer[k].qns); dp = len - dp;
            old_dp = ov->buffer[k].te - ov->buffer[k].ts; old_dp = lt - old_dp;
            if((dp <= (len*dup_rate)) && (old_dp <= (lt*dup_rate))) continue;
        } 

        kv_push(uint64_t, (*idx), (s<<1));
        kv_push(uint64_t, (*idx), (e<<1)|1);
    }

    radix_sort_ec64(idx->a, idx->a + idx->n); s0 = e0 = rr = -1;
    for (k = 0, dp = 0, st = ed = 0; k < idx->n; ++k) {
        old_dp = dp;
        ///if a[j] is qe
        if (idx->a[k]&1) --dp;
        else ++dp;

        ed = idx->a[k]>>1;
        if(ed > st) {
            // if(ov->length && ((ov->buffer[0].qns>>32) == 5045637)) {
            //     fprintf(stderr, "[M::%s]\tmd::[%ld,%ld)\tcov::%ld\tlen::%ld\tid::%lu\n", __func__, st, ed, old_dp, len, ov->buffer[0].qns>>32);
            // }
            if(old_dp <= cov) {
                // if(ov->length && (ov->buffer[0].qns>>32) == 22344) fprintf(stderr, "[M::%s]\tmd::[%ld,%ld)\tcov::%ld\tlen::%ld\n", __func__, st, ed, old_dp, len);
                return 1;
            } 
        }
        st = ed;
    }


    ed = len; old_dp = dp;
    if(ed > st) {
        // if(ov->length && ((ov->buffer[0].qns>>32) == 5045637)) {
        //     fprintf(stderr, "[M::%s]\tmd::[%ld,%ld)\tcov::%ld\tlen::%ld\tid::%lu\n", __func__, st, ed, old_dp, len, ov->buffer[0].qns>>32);
        // }
        if(old_dp <= cov) {
            // if(ov->length && (ov->buffer[0].qns>>32) == 22344) fprintf(stderr, "[M::%s]\tmd::[%ld,%ld)\tcov::%ld\tlen::%ld\n", __func__, st, ed, old_dp, len);
            return 1;
        }
    }
    
    return 0;
}

int64_t cal_chemical_r_adv(ma_hit_t_alloc *ov, asg64_v *idx, int64_t len, int64_t cut_len, double dup_rate, uint64_t is_del)
{
    uint64_t k, s, e; int64_t dp, old_dp, st = 0, ed, s0, e0, rr, lt, min_cov;
    for (k = idx->n = 0; k < ov->length; k++) {
        if(is_del && ov->buffer[k].del) continue;
        s0 = (uint32_t)ov->buffer[k].qns; e0 = ov->buffer[k].qe;
        if(s0 > 0) s0 += cut_len;
        if(e0 < len) e0 -= cut_len;
        if(e0 <= s0) continue;
        s = s0; e = e0;

        lt = Get_READ_LENGTH((R_INF), ov->buffer[k].tn);
        rr = (lt >= len)?(lt - len):(len - lt);
        if((rr <= (len*dup_rate)) && (rr <= (lt*dup_rate)) && (ov->buffer[k].rev)) {
            dp = (ov->buffer[k].qe) - ((uint32_t)ov->buffer[k].qns); dp = len - dp;
            old_dp = ov->buffer[k].te - ov->buffer[k].ts; old_dp = lt - old_dp;
            if((dp <= (len*dup_rate)) && (old_dp <= (lt*dup_rate))) continue;
        } 

        kv_push(uint64_t, (*idx), (s<<1));
        kv_push(uint64_t, (*idx), (e<<1)|1);
    }

    radix_sort_ec64(idx->a, idx->a + idx->n); s0 = e0 = rr = -1; min_cov = INT64_MAX;
    for (k = 0, dp = 0, st = ed = 0; k < idx->n; ++k) {
        old_dp = dp;
        ///if a[j] is qe
        if (idx->a[k]&1) --dp;
        else ++dp;

        ed = idx->a[k]>>1;
        if(ed > st) {
            // if(ov->length && ((ov->buffer[0].qns>>32) == 5045637)) {
            //     fprintf(stderr, "[M::%s]\tmd::[%ld,%ld)\tcov::%ld\tlen::%ld\tid::%lu\n", __func__, st, ed, old_dp, len, ov->buffer[0].qns>>32);
            // }
            if(old_dp <= min_cov) {
                // if(ov->length && (ov->buffer[0].qns>>32) == 22344) fprintf(stderr, "[M::%s]\tmd::[%ld,%ld)\tcov::%ld\tlen::%ld\n", __func__, st, ed, old_dp, len);
                min_cov = old_dp;
            } 
        }
        st = ed;
    }


    ed = len; old_dp = dp;
    if(ed > st) {
        // if(ov->length && ((ov->buffer[0].qns>>32) == 5045637)) {
        //     fprintf(stderr, "[M::%s]\tmd::[%ld,%ld)\tcov::%ld\tlen::%ld\tid::%lu\n", __func__, st, ed, old_dp, len, ov->buffer[0].qns>>32);
        // }
        if(old_dp <= min_cov) {
            // if(ov->length && (ov->buffer[0].qns>>32) == 22344) fprintf(stderr, "[M::%s]\tmd::[%ld,%ld)\tcov::%ld\tlen::%ld\n", __func__, st, ed, old_dp, len);
            min_cov = old_dp;
        }
    }
    
    return min_cov;
}

void prt_dbg_rid_paf(ma_hit_t_alloc *ov, UC_Read *ra, asg8_v *qa)
{
    if(!(ov->length)) return;
    uint64_t k, qn = (ov->buffer[0].qns>>32), qn_n, i, m; char *nn = NULL; FILE *fp = NULL; ma_hit_t *h = NULL;
    qn_n = Get_NAME_LENGTH((R_INF), qn) + 64; MALLOC(nn, qn_n);

    sprintf(nn, "%.*s.qry.fq", (int)Get_NAME_LENGTH(R_INF, qn), Get_NAME((R_INF), qn)); fp = fopen(nn, "w");
    for (k = 0; k < ov->length; k++) {
        i = ov->buffer[k].tn;
        recover_UC_Read(ra, &R_INF, i);
        fprintf(fp, "@%.*s\n", (int32_t)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i));
        fprintf(fp, "%.*s\n", (int32_t)ra->length, ra->seq);        
        fprintf(fp, "+\n");
        retrive_bqual(qa, NULL, i, -1, -1, 0, sc_bn);
        for (m = 0; m < qa->n; m++) fprintf(fp, "%c", (char)(sc_tb[qa->a[m]] + 33 - 1));
        fprintf(fp, "\n");
    }
    fclose(fp);

    sprintf(nn, "%.*s.ref.fq", (int)Get_NAME_LENGTH(R_INF, qn), Get_NAME((R_INF), qn)); fp = fopen(nn, "w");
    i = qn;
    recover_UC_Read(ra, &R_INF, i);
    fprintf(fp, "@%.*s\n", (int32_t)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i));
    fprintf(fp, "%.*s\n", (int32_t)ra->length, ra->seq);        
    fprintf(fp, "+\n");
    retrive_bqual(qa, NULL, i, -1, -1, 0, sc_bn);
    for (m = 0; m < qa->n; m++) fprintf(fp, "%c", (char)(sc_tb[qa->a[m]] + 33 - 1));
    fprintf(fp, "\n");
    fclose(fp);

    sprintf(nn, "%.*s.ref.fa", (int)Get_NAME_LENGTH(R_INF, qn), Get_NAME((R_INF), qn)); fp = fopen(nn, "w");
    i = qn;
    recover_UC_Read(ra, &R_INF, i);
    fprintf(fp, ">%.*s\n", (int32_t)Get_NAME_LENGTH(R_INF, i), Get_NAME(R_INF, i));
    fprintf(fp, "%.*s\n", (int32_t)ra->length, ra->seq);        
    // fprintf(fp, "+\n");
    // retrive_bqual(qa, NULL, i, -1, -1, 0, sc_bn);
    // for (m = 0; m < qa->n; m++) fprintf(fp, "%c", (char)(sc_tb[qa->a[m]] + 33 - 1));
    // fprintf(fp, "\n");
    fclose(fp);

    sprintf(nn, "%.*s.ov.paf", (int)Get_NAME_LENGTH(R_INF, qn), Get_NAME((R_INF), qn)); fp = fopen(nn, "w");
    for (k = 0; k < ov->length; k++) {
        h = &(ov->buffer[k]);
        fprintf(fp, "%.*s(qn::%u)\t%u\t%u\t%u\t%c\t%.*s(tn::%u)\t%u\t%u\t%u\t%u\t%u\t255\n", (int)Get_NAME_LENGTH(R_INF, Get_qn(*h)), Get_NAME((R_INF), Get_qn(*h)), Get_qn(*h), (uint32_t)Get_READ_LENGTH(R_INF, Get_qn(*h)), Get_qs(*h), Get_qe(*h), "+-"[h->rev], 
        (int)Get_NAME_LENGTH(R_INF, Get_tn(*h)), Get_NAME((R_INF), Get_tn(*h)), Get_tn(*h), (uint32_t)Get_READ_LENGTH(R_INF, Get_tn(*h)), Get_ts(*h), Get_te(*h), h->ml, h->bl);
    }
    fclose(fp);

    free(nn);
}

static void worker_hap_dc_ec_chemical_r(void *data, long i, int tid)
{
    ec_ovec_buf_t0 *b = &(((ec_ovec_buf_t*)data)->a[tid]);
    ma_hit_t_alloc *paf = &(R_INF.paf[i]); uint64_t k, m;

    // if (memcmp("3ed80bc4-1169-4948-a9ff-9c2463b7f7a2", Get_NAME((R_INF), i), Get_NAME_LENGTH((R_INF),i)) == 0) {
    //     fprintf(stderr, "-a-[M::%s-beg] rid->%ld, b->rr->%lu\n", __func__, i, b->rr);
    // } 
    if(b->cnt[1] == 0) {
        // if(i == 6204620) prt_dbg_rid_paf(&(R_INF.paf[i]), &(b->self_read), &(b->v8q));
        // if(is_chemical_r(&(R_INF.paf[i]), &b->v64, Get_READ_LENGTH((R_INF), i), 3, 16)) {
        if(is_chemical_r_adv(&(R_INF.paf[i]), &b->v64, Get_READ_LENGTH((R_INF), i), asm_opt.chemical_cov, asm_opt.chemical_flank, 0.02, 0)) {
            // fprintf(stderr, "-um-[M::%s]\tqn::%u::%.*s\n\n", __func__, (uint32_t)(i), (int)Get_NAME_LENGTH(R_INF, i), Get_NAME((R_INF), i));
            R_INF.paf[i].length = 0; b->cnt[0]++;
        } 
    } else if(b->cnt[1] == 1) {
        for (k = 0; k < paf->length; k++) {
            if(R_INF.paf[paf->buffer[k].tn].length == 0) {
                paf->buffer[k].tn = (uint32_t)-1; b->cnt[0]++;
            }
        }
    } else {
        for (k = m = 0; k < paf->length; k++) {
            if(paf->buffer[k].tn == ((uint32_t)-1)) continue;
            paf->buffer[m++] = paf->buffer[k];
        }
        paf->length = m;
    }

   refresh_ec_ovec_buf_t0(b, REFRESH_N);
}

static void worker_hap_dc_ec_chemical_arc(void *data, long i, int tid)
{
    ec_ovec_buf_t0 *b = &(((ec_ovec_buf_t*)data)->a[tid]);
    ma_hit_t_alloc *paf = &(R_INF.paf[i]), *rev; uint64_t k, z;

    if(b->cnt[1] == 0) {
        if(is_chemical_r_adv(&(R_INF.paf[i]), &b->v64, Get_READ_LENGTH((R_INF), i), asm_opt.chemical_cov, asm_opt.chemical_flank, 0.02, 1)) {
            // fprintf(stderr, "-um-[M::%s]\tqn::%u::%.*s\n\n", __func__, (uint32_t)(i), (int)Get_NAME_LENGTH(R_INF, i), Get_NAME((R_INF), i));   
            for (k = 0; k < paf->length; k++) {paf->buffer[k].del = 1;} b->cnt[0]++;
        }
    } else if(b->cnt[1] == 1) {
        for (k = 0; k < paf->length; k++) {
            if((Get_qn(paf->buffer[k])) > (Get_tn(paf->buffer[k]))) continue;
            rev = &(R_INF.paf[paf->buffer[k].tn]);
            for (z = 0; z < rev->length; z++) {
                if((rev->buffer[z].tn == (Get_qn(paf->buffer[k])))) {
                    if(paf->buffer[k].del != rev->buffer[z].del) {
                        paf->buffer[k].del = rev->buffer[z].del = 1;
                    }
                }
            }
        }
    }

   refresh_ec_ovec_buf_t0(b, REFRESH_N);
}

static void worker_hap_dc_ec_chemical_arc_mark(void *data, long i, int tid)
{
    ec_ovec_buf_t0 *b = &(((ec_ovec_buf_t*)data)->a[tid]);
    ma_hit_t_alloc *paf = &(R_INF.paf[i]), *rev; uint64_t k, z; int64_t cov, msk_cut = asm_opt.chemical_cov;
    uint8_t *msk = ((ec_ovec_buf_t*)data)->cr;

    if(b->cnt[1] == 0) {
        msk[i] = (uint8_t)-1;
        cov = cal_chemical_r_adv(&(R_INF.paf[i]), &b->v64, Get_READ_LENGTH((R_INF), i), asm_opt.chemical_flank, 0.02, 1);
        if(cov <= msk_cut) msk[i] = cov;
        if(cov <= msk_cut/**FORCE_CUT**/) {
            // fprintf(stderr, "-um-[M::%s]\tqn::%u::%.*s\n\n", __func__, (uint32_t)(i), (int)Get_NAME_LENGTH(R_INF, i), Get_NAME((R_INF), i));   
            for (k = 0; k < paf->length; k++) {paf->buffer[k].del = 1;} b->cnt[0]++;
        }
    } else if(b->cnt[1] == 1) {
        for (k = 0; k < paf->length; k++) {
            if((Get_qn(paf->buffer[k])) > (Get_tn(paf->buffer[k]))) continue;
            rev = &(R_INF.paf[paf->buffer[k].tn]);
            for (z = 0; z < rev->length; z++) {
                if((rev->buffer[z].tn == (Get_qn(paf->buffer[k])))) {
                    if((paf->buffer[k].del != rev->buffer[z].del) || (msk[Get_qn(paf->buffer[k])] <= msk_cut/**FORCE_CUT**/) || (msk[Get_tn(paf->buffer[k])] <= msk_cut/**FORCE_CUT**/)) {
                        paf->buffer[k].del = rev->buffer[z].del = 1;
                    }
                }
            }
        }
    }

   refresh_ec_ovec_buf_t0(b, REFRESH_N);
}

uint64_t get_candidate_rrs(ma_utg_t *u, uint64_t rz)
{
    // uint64_t rid, rs, re, rev, k, l[2], lr, ts, te; 
    // ma_hit_t_alloc *z = NULL;
    // ma_hit_t *h = NULL;

    // rid = u->a[rz]>>33; rev = (u->a[rz]>>32)&1; 
    // rs = 0; re = (uint32_t)u->a[rz];
    // if(!rev) {
    //     rs = Get_READ_LENGTH(R_INF, rid) - ((uint32_t)u->a[rz]);
    //     re = Get_READ_LENGTH(R_INF, rid);
    // }

    // for (k = lr = 0; k < rz; k++) lr += (uint32_t)u->a[k];
    // ts = lr; te = lr + (uint32_t)u->a[k];
    
    // z = &(sources[rid]);
    // for (k = 0; k < z->length; k++) {
    //     h = &(z->buffer[k]);
    //     if ((Get_qs(*h) <= rs) && (Get_qe(*h) >= re)) {
    //         l[0] = l[1] = 0;
    //         if(!(h->rev&rev)) {
    //             l[0] = Get_ts(*h); l[1] = Get_READ_LENGTH(R_INF, Get_tn(*h)) - Get_te(*h);
    //         } else {
    //             l[1] = Get_ts(*h); l[0] = Get_READ_LENGTH(R_INF, Get_tn(*h)) - Get_te(*h);
    //         }
        
    //     }
    // }
    

    return 1;
}

static void worker_ec_polish(void *data, long i, int tid)
{
    ec_ovec_buf_t0 *b = &(((ec_polish_buf_t*)data)->p->a[tid]);
    uint64_t *idx = &(((ec_polish_buf_t*)data)->idx.a[i]);

    if(get_candidate_rrs(&(((ec_polish_buf_t*)data)->ug->u.a[(*idx)>>32]), (uint32_t)(*idx))) {
        *idx = (uint64_t)-1;
    }

   refresh_ec_ovec_buf_t0(b, REFRESH_N);
}

void gen_ovlst_paf(ma_hit_t_alloc *in_e, ma_hit_t_alloc *in_r, asg64_v *ou)
{
    uint32_t n = 0, k; 

    for (k = 0; k < in_e->length; k++) {
        if(!(in_e->buffer[k].el)) n++;
    }
    n += in_r->length;

    kv_resize(uint64_t, *ou, n); ou->n = 0;

    for (k = 0; k < in_e->length; k++) {
        if(!(in_e->buffer[k].el)) {
            ou->a[ou->n] = in_e->buffer[k].tn;
            ou->a[ou->n] <<= 1; ou->a[ou->n] |= in_e->buffer[k].rev;
            ou->n++;
        }
    }

    for (k = 0; k < in_r->length; k++) {
        ou->a[ou->n] = in_r->buffer[k].tn;
        ou->a[ou->n] <<= 1; ou->a[ou->n] |= in_r->buffer[k].rev;
        ou->n++;
    }

    radix_sort_ec64(ou->a, ou->a+ou->n);
}

void dbg_overlap_region_cigar(overlap_region *a, uint64_t a_n, char *qstr, All_reads *rref, UC_Read *tu)
{
    bit_extz_t ez; uint64_t i, k;
    for (i = 0; i < a_n; i++) {
        if(a[i].y_pos_strand) {
            recover_UC_Read_RC(tu, rref, a[i].y_id);
        } else {
            recover_UC_Read(tu, rref, a[i].y_id);
        }
        for (k = 0; k < a[i].w_list.n; k++) {
            if(is_ualn_win((a[i].w_list.a[k]))) continue;
            set_bit_extz_t(ez, a[i], k);
            if(!cigar_check(tu->seq, qstr, &ez)) {
                fprintf(stderr, "\n-0-[M::%s] x_id::%u, y_id::%u, x::[%u, %u), y::[%u, %u)\n", __func__, a[i].x_id, a[i].y_id, a[i].x_pos_s, a[i].x_pos_e + 1, a[i].y_pos_s, a[i].y_pos_e + 1);
                exit(1);
            } else {
                // fprintf(stderr, "\n-1-[M::%s] x_id::%u, y_id::%u, x::[%u, %u), y::[%u, %u)\n", __func__, a[i].x_id, a[i].y_id, a[i].x_pos_s, a[i].x_pos_e + 1, a[i].y_pos_s, a[i].y_pos_e + 1);
            }
        }
    }
}

overlap_region* h_ec_lchain_re(ha_abuf_t *ab, uint32_t rid, char* rs, uint64_t rl, UC_Read *tu, uint64_t mz_w, uint64_t mz_k, All_reads *rref, overlap_region_alloc *ol, Candidates_list *cl, bit_extz_t *exz, asg16_v* buf, double bw_thres, 
								 int apend_be, kvec_t_u8_warp* k_flag, kvec_t_u64_warp* dbg_ct, st_mt_t *sp, uint32_t *high_occ, uint32_t *low_occ, uint32_t is_accurate, uint32_t gen_off, int64_t enable_mcopy, double mcopy_rate, uint32_t mcopy_khit_cut, ma_hit_t_alloc *in0, ma_hit_t_alloc *in1)
{
    // fprintf(stderr, "-mm-[M::%s]\tchain_cutoff::%u\n", __func__, chain_cutoff);
    uint64_t on = 0, k, ol0, wl = (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), m; ma_hit_t *oa = NULL; overlap_region *z = NULL, *aux_o = NULL, t; Window_Pool w; double err = asm_opt.max_ov_diff_ec;

    int64_t max_skip, max_iter, max_dis, quick_check; double chn_pen_gap, chn_pen_skip; 
	set_lchain_dp_op(is_accurate, mz_k, &max_skip, &max_iter, &max_dis, &chn_pen_gap, &chn_pen_skip, &quick_check);

    init_Window_Pool(&w, rl, wl, (int)(1.0/err));

    on = in0->length + in1->length + 1;
    clear_overlap_region_alloc(ol); 
    clear_Candidates_list(cl); 
    if(on > ol->size) {
        REALLOC(ol->list, on);
        memset(ol->list+ol->size, 0, sizeof(overlap_region)*(on-ol->size));
        ol->size = on;   
    }
    on = in0->length + in1->length; aux_o = &(ol->list[on]);
    ol->length = 0; ol->mapped_overlaps_length = 0; m = 0;
    

    // get the list of anchors
    get_mz1(rs, rl, mz_w, mz_k, 0, !(asm_opt.flag & HA_F_NO_HPC), ab, ha_flt_tab, ha_idx, asm_opt.mz_sample_dist, k_flag, dbg_ct, NULL, -1, asm_opt.dp_min_len, -1, sp, asm_opt.mz_rewin, 0, NULL, 0);

    oa = in0->buffer; on = in0->length;
    for (k = 0; k < on; k++) {
        ol0 = ol->length;
        if(oa[k].el) {
            z = &(ol->list[ol->length++]);
            z->x_id = rid; z->y_id = oa[k].tn;
            z->x_pos_strand = 0; z->y_pos_strand = oa[k].rev;
            z->x_pos_s = (uint32_t)oa[k].qns;
            z->x_pos_e = oa[k].qe - 1;
            z->y_pos_s = oa[k].ts;
            z->y_pos_e = oa[k].te - 1;

            z->is_match = 1;
            z->align_length = z->overlapLen = z->shared_seed = z->x_pos_e + 1 - z->x_pos_s;
            z->non_homopolymer_errors = z->strong = 0;

            set_exact_exz(exz, z->x_pos_s, z->x_pos_e + 1, z->y_pos_s, z->y_pos_e + 1); push_alnw(z, exz);

            // if(oa[k].tn == 15382) fprintf(stderr, "-em-[M::%s]\tqn::%u\ttn::%u\terr::%u\n", __func__, rid, oa[k].tn, ol->list[ol->length-1].non_homopolymer_errors);
        } else {
            if(oa[k].rev) recover_UC_Read_RC(tu, rref, oa[k].tn);
            else recover_UC_Read(tu, rref, oa[k].tn);

            get_pi_ec_chain(ab, rid, rl, oa[k].tn, tu->seq, tu->length, mz_w, mz_k, ol, cl, bw_thres, apend_be, k_flag, dbg_ct, sp, high_occ, low_occ, gen_off, enable_mcopy, mcopy_rate, mcopy_khit_cut, max_skip, max_iter, max_dis, quick_check, chn_pen_gap, chn_pen_skip);
            assert(ol->length - ol0 <= 1);
            if((ol->length > ol0) && (gen_hc_r_alin_re(&(ol->list[ol0]), cl, rs, rl, tu->seq, tu->length, exz, aux_o, asm_opt.max_ov_diff_ec, w.window_length, rid, E_KHIT, 1, buf))) {
                ol->list[ol0].y_pos_strand = oa[k].rev;
                // if(oa[k].tn == 15382) fprintf(stderr, "-mm-[M::%s]\tqn::%u\ttn::%u\terr::%u\n", __func__, rid, oa[k].tn, ol->list[ol->length-1].non_homopolymer_errors);
            } 
        }

        if((ol->length <= ol0) || (ol->list[ol0].is_match != 1)) continue;

        if(m != ol0) {
            t = ol->list[m];
            ol->list[m] = ol->list[ol0];
            ol->list[ol0] = t;
        }

        m++;
    }


    oa = in1->buffer; on = in1->length;
    for (k = 0; k < on; k++) {
        ol0 = ol->length;

        if(oa[k].rev) recover_UC_Read_RC(tu, rref, oa[k].tn);
        else recover_UC_Read(tu, rref, oa[k].tn);

        get_pi_ec_chain(ab, rid, rl, oa[k].tn, tu->seq, tu->length, mz_w, mz_k, ol, cl, bw_thres, apend_be, k_flag, dbg_ct, sp, high_occ, low_occ, gen_off, enable_mcopy, mcopy_rate, mcopy_khit_cut, max_skip, max_iter, max_dis, quick_check, chn_pen_gap, chn_pen_skip);
        assert(ol->length - ol0 <= 1);
        if((ol->length > ol0) && (gen_hc_r_alin_re(&(ol->list[ol0]), cl, rs, rl, tu->seq, tu->length, exz, aux_o, asm_opt.max_ov_diff_ec, w.window_length, rid, E_KHIT, 1, buf))) {
            ol->list[ol0].y_pos_strand = oa[k].rev;
            // if(oa[k].tn == 15382) fprintf(stderr, "-mm-[M::%s]\tqn::%u\ttn::%u\terr::%u\n", __func__, rid, oa[k].tn, ol->list[ol->length-1].non_homopolymer_errors);
        } 

        if((ol->length <= ol0) || (ol->list[ol0].is_match != 1)) continue;

        if(m != ol0) {
            t = ol->list[m];
            ol->list[m] = ol->list[ol0];
            ol->list[ol0] = t;
        }
        
        m++;
    }

    ol->length = m;
    
    // fprintf(stderr, "[M::%s]\tnew_n::%lu\told_n::%u\n", __func__, ol->length, in0->length + in1->length);
    assert(ol->length <= (in0->length + in1->length));


    // dbg_overlap_region_cigar(ol->list, ol->length, rs, rref, tu);


    return aux_o;
}


overlap_region* h_ec_lchain_re1(ha_abuf_t *ab, uint32_t rid, UC_Read *qu, UC_Read *tu, uint64_t mz_w, uint64_t mz_k, All_reads *rref, overlap_region_alloc *ol, Candidates_list *cl, bit_extz_t *exz, asg16_v *buf, asg64_v *srt_i, double bw_thres, 
								 int apend_be, kvec_t_u8_warp* k_flag, kvec_t_u64_warp* dbg_ct, st_mt_t *sp, uint32_t *high_occ, uint32_t *low_occ, uint32_t is_accurate, uint32_t gen_off, int64_t enable_mcopy, double mcopy_rate, uint32_t mcopy_khit_cut, ma_hit_t_alloc *in0, ma_hit_t_alloc *in1)
{
    // fprintf(stderr, "-mm-[M::%s]\tchain_cutoff::%u\n", __func__, chain_cutoff);
    uint64_t on = 0, k, one = 0, ol0, wl = (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), m, m0, tid, trev; ma_hit_t *oa = NULL, *p = NULL; overlap_region *aux_o = NULL, *z = NULL, t; Window_Pool w; double err = asm_opt.max_ov_diff_ec;
    char* rs = qu->seq; uint64_t rl = qu->length; 
    int64_t max_skip, max_iter, max_dis, quick_check; double chn_pen_gap, chn_pen_skip; 
	set_lchain_dp_op(is_accurate, mz_k, &max_skip, &max_iter, &max_dis, &chn_pen_gap, &chn_pen_skip, &quick_check);
    init_Window_Pool(&w, rl, wl, (int)(1.0/err));

    srt_i->n = 0;
    oa = in0->buffer; on = in0->length; m0 = 0;
    for (k = 0; k < on; k++) {
        if(oa[k].el) {
            one++; continue;
        }
        m = oa[k].tn; m <<= 1; m |= ((uint64_t)oa[k].rev); m <<= 32; m |= (k<<1); m |= m0;
        kv_push(uint64_t, *srt_i, m);
    }
    oa = in1->buffer; on = in1->length; m0 = 1;
    for (k = 0; k < on; k++) {
        // if(oa[k].el) continue;
        m = oa[k].tn; m <<= 1; m |= ((uint64_t)oa[k].rev); m <<= 32; m |= (k<<1); m |= m0;
        kv_push(uint64_t, *srt_i, m);
    }
    radix_sort_ec64(srt_i->a, srt_i->a + srt_i->n);

    // get the list of anchors
    get_mz1(rs, rl, mz_w, mz_k, 0, !(asm_opt.flag & HA_F_NO_HPC), ab, ha_flt_tab, NULL/**ha_idx**/, asm_opt.mz_sample_dist, k_flag, dbg_ct, NULL, -1, asm_opt.dp_min_len, -1, sp, asm_opt.mz_rewin, 0, NULL, 0);

    h_ec_lchain_re_gen(ab, rid, rs, rl, mz_w, mz_k, ha_idx, rref, ol, cl, bw_thres, apend_be, k_flag, dbg_ct, sp, high_occ, low_occ, gen_off, enable_mcopy, mcopy_rate, mcopy_khit_cut, 
            max_skip, max_iter, max_dis, quick_check, chn_pen_gap, chn_pen_skip, tu, srt_i, scb.a);

    
    ///max size
    on = ol->length + one + srt_i->n + 1; m0 = on - 1;
    if(on > ol->size) {
        REALLOC(ol->list, on);
        memset(ol->list+ol->size, 0, sizeof(overlap_region)*(on-ol->size));
        ol->size = on;   
    }
    aux_o = &(ol->list[on-1]); ol->mapped_overlaps_length = 0; on = ol->length;

    // fprintf(stderr, "-0-[M::%s]\n", __func__);

    gen_hc_r_alin(ol, cl, rref, qu, tu, exz, aux_o, asm_opt.max_ov_diff_ec, w.window_length, rid, E_KHIT, 1, buf, 0, -1, -1, 0, 0, -1, -1, NULL, NULL); rs = qu->seq; 

    // fprintf(stderr, "-1-[M::%s]\n", __func__);

    ///handle unmatched chain
    for (k = m = ol->length; k < on; k++) {
        clear_fake_cigar(&(ol->list[k].f_cigar));
        clear_window_list_alloc(&(ol->list[k].w_list));
        clear_window_list_alloc(&(ol->list[k].boundary_cigars));

        ol0 = ol->length;

        tid = ol->list[k].y_id; trev = ol->list[k].y_pos_strand;
        if(trev) recover_UC_Read_RC(tu, rref, tid);
        else recover_UC_Read(tu, rref, tid);

        get_pi_ec_chain(ab, rid, rl, tid, tu->seq, tu->length, mz_w, mz_k, ol, cl, bw_thres, apend_be, k_flag, dbg_ct, sp, high_occ, low_occ, gen_off, enable_mcopy, mcopy_rate, mcopy_khit_cut, max_skip, max_iter, max_dis, quick_check, chn_pen_gap, chn_pen_skip);
        assert(ol->length - ol0 <= 1);
        if((ol->length > ol0) && (gen_hc_r_alin_re(&(ol->list[ol0]), cl, rs, rl, tu->seq, tu->length, exz, aux_o, asm_opt.max_ov_diff_ec, w.window_length, rid, E_KHIT, 1, buf))) {
            ol->list[ol0].y_pos_strand = trev;
            // if(oa[k].tn == 15382) fprintf(stderr, "-mm-[M::%s]\tqn::%u\ttn::%u\terr::%u\n", __func__, rid, oa[k].tn, ol->list[ol->length-1].non_homopolymer_errors);
        } 

        if((ol->length <= ol0) || (ol->list[ol0].is_match != 1)) continue;

        if(m != ol0) {
            t = ol->list[m];
            ol->list[m] = ol->list[ol0];
            ol->list[ol0] = t;
        }

        m++;
    }
    ol->length = m;

    for (k = ol->length; k < on; k++) {
        clear_fake_cigar(&(ol->list[k].f_cigar));
        clear_window_list_alloc(&(ol->list[k].w_list));
        clear_window_list_alloc(&(ol->list[k].boundary_cigars));
    }

    // fprintf(stderr, "[M::%s]\tnew::%lu\told::%lu\n", __func__, ol->length, ol0);
    
    oa = in0->buffer; on = in0->length;
    for (k = 0; k < on; k++) {
        if(oa[k].el) {
            z = &(ol->list[ol->length++]);
            z->x_id = rid; z->y_id = oa[k].tn;
            z->x_pos_strand = 0; z->y_pos_strand = oa[k].rev;
            z->x_pos_s = (uint32_t)oa[k].qns;
            z->x_pos_e = oa[k].qe - 1;
            z->y_pos_s = oa[k].ts;
            z->y_pos_e = oa[k].te - 1;

            z->is_match = 1;
            z->align_length = z->overlapLen = z->shared_seed = z->x_pos_e + 1 - z->x_pos_s;
            z->non_homopolymer_errors = z->strong = 0;

            set_exact_exz(exz, z->x_pos_s, z->x_pos_e + 1, z->y_pos_s, z->y_pos_e + 1); push_alnw(z, exz);

            // if(oa[k].tn == 1945) fprintf(stderr, "-em-[M::%s]\tqn::%u\ttn::%u\terr::%u\n", __func__, rid, oa[k].tn, ol->list[ol->length-1].non_homopolymer_errors);
        }
    }
    m = ol->length;

    for (k = 0; k < srt_i->n; k++) {
        ol0 = ol->length;
        if(srt_i->a[k]&1) {
            p = &(in1->buffer[((uint32_t)srt_i->a[k])>>1]);
        } else {
            p = &(in0->buffer[((uint32_t)srt_i->a[k])>>1]);
        }
        
        if(p->rev) recover_UC_Read_RC(tu, rref, p->tn);
        else recover_UC_Read(tu, rref, p->tn);

        get_pi_ec_chain(ab, rid, rl, p->tn, tu->seq, tu->length, mz_w, mz_k, ol, cl, bw_thres, apend_be, k_flag, dbg_ct, sp, high_occ, low_occ, gen_off, enable_mcopy, mcopy_rate, mcopy_khit_cut, max_skip, max_iter, max_dis, quick_check, chn_pen_gap, chn_pen_skip);
        assert(ol->length - ol0 <= 1);
        if((ol->length > ol0) && (gen_hc_r_alin_re(&(ol->list[ol0]), cl, rs, rl, tu->seq, tu->length, exz, aux_o, asm_opt.max_ov_diff_ec, w.window_length, rid, E_KHIT, 1, buf))) {
            ol->list[ol0].y_pos_strand = p->rev;
            // if(oa[k].tn == 15382) fprintf(stderr, "-mm-[M::%s]\tqn::%u\ttn::%u\terr::%u\n", __func__, rid, oa[k].tn, ol->list[ol->length-1].non_homopolymer_errors);
        } 

        if((ol->length <= ol0) || (ol->list[ol0].is_match != 1)) continue;

        if(m != ol0) {
            t = ol->list[m];
            ol->list[m] = ol->list[ol0];
            ol->list[ol0] = t;
        }

        m++;
    }
    
    ol->length = m;

    
    // fprintf(stderr, "[M::%s]\tnew_n::%lu\told_n::%lu\n", __func__, ol->length, m0);
    // fprintf(stderr, "[M::%s]\tnew_n::%lu\told_n::%u\n", __func__, ol->length, in0->length + in1->length);
    // assert(ol->length <= (in0->length + in1->length));


    // dbg_overlap_region_cigar(ol->list, ol->length, rs, rref, tu);

    return aux_o;
}

uint64_t direct_chain_cal(ha_abuf_t *ab, uint64_t qid, char *qs, uint64_t ql, uint64_t tid, char *ts, uint64_t tl, uint64_t trev, uint64_t mz_w, uint64_t mz_k, overlap_region_alloc *olst, Candidates_list *cl, kvec_t_u8_warp* k_flag, kvec_t_u64_warp* dbg_ct, st_mt_t *sp, uint32_t *high_occ, uint32_t *low_occ, double bw_thres, 
								 int apend_be, uint64_t max_cnt, uint64_t min_cnt, uint32_t gen_off, int64_t enable_mcopy, double mcopy_rate, uint32_t mcopy_khit_cut, int64_t max_skip, int64_t max_iter, int64_t max_dis, int64_t quick_check, double chn_pen_gap, double chn_pen_skip,
                                 bit_extz_t *exz, overlap_region *aux_o, double e_rate, int64_t wl, int64_t khit, int64_t move_gap, asg16_v* buf)
{
    uint64_t ol0 = olst->length;
    get_pi_ec_chain(ab, qid, ql, tid, ts, tl, mz_w, mz_k, olst, cl, bw_thres, apend_be, k_flag, dbg_ct, sp, high_occ, low_occ, gen_off, enable_mcopy, mcopy_rate, mcopy_khit_cut, max_skip, max_iter, max_dis, quick_check, chn_pen_gap, chn_pen_skip);
    assert(olst->length - ol0 <= 1);
    if(olst->length > ol0) {
        if(gen_hc_r_alin_re(&(olst->list[ol0]), cl, qs, ql, ts, tl, exz, aux_o, e_rate, wl, qid, E_KHIT, 1, buf)) {
            olst->list[ol0].y_pos_strand = trev;
            return 1;
        } else {
            clear_fake_cigar(&(olst->list[ol0].f_cigar));
            clear_window_list_alloc(&(olst->list[ol0].w_list));
            clear_window_list_alloc(&(olst->list[ol0].boundary_cigars));
            olst->length--;
        }
    }
    return 0;
}


overlap_region* h_ec_lchain_re2(ha_abuf_t *ab, uint32_t rid, UC_Read *qu, UC_Read *tu, uint64_t mz_w, uint64_t mz_k, All_reads *rref, overlap_region_alloc *ol, Candidates_list *cl, bit_extz_t *exz, asg16_v *buf, asg64_v *srt_i, double bw_thres, 
								 int apend_be, kvec_t_u8_warp* k_flag, kvec_t_u64_warp* dbg_ct, st_mt_t *sp, uint32_t *high_occ, uint32_t *low_occ, uint32_t is_accurate, uint32_t gen_off, int64_t enable_mcopy, double mcopy_rate, uint32_t mcopy_khit_cut, ma_hit_t_alloc *in0, ma_hit_t_alloc *in1)
{
    // fprintf(stderr, "-0-[M::%s]\tnew_n::%lu\told_n::%u\n", __func__, ol->length, in0->length + in1->length);
    // fprintf(stderr, "-mm-[M::%s]\tchain_cutoff::%u\n", __func__, chain_cutoff);
    uint64_t on = 0, k, l, i, one = 0, ol0, wl = (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), m, m0, tid, trev, max_cnt = UINT32_MAX, min_cnt = 0; ma_hit_t *oa = NULL, *p = NULL; overlap_region *aux_o = NULL, *z = NULL, t; Window_Pool w; double err = asm_opt.max_ov_diff_ec; tiny_queue_t tq; memset(&tq, 0, sizeof(tiny_queue_t));
    char* rs = qu->seq; uint64_t rl = qu->length; int64_t n, zn, om;
    int64_t max_skip, max_iter, max_dis, quick_check; double chn_pen_gap, chn_pen_skip; 
	set_lchain_dp_op(is_accurate, mz_k, &max_skip, &max_iter, &max_dis, &chn_pen_gap, &chn_pen_skip, &quick_check);
    init_Window_Pool(&w, rl, wl, (int)(1.0/err));
    
    ///cutoff
    if(high_occ) {
        max_cnt = (*high_occ);
        if(max_cnt < 2) max_cnt = 2;
    }
    if(low_occ) {
        min_cnt = (*low_occ);
        if(min_cnt < 2) min_cnt = 2;
    }
    
    ///memory
    ol->length = 0; on = in0->length + in1->length + 1;
    if(on > ol->size) {
        REALLOC(ol->list, on);
        memset(ol->list+ol->size, 0, sizeof(overlap_region)*(on-ol->size));
        ol->size = on;   
    }
    aux_o = &(ol->list[on-1]); ol->mapped_overlaps_length = 0; on = in0->length + in1->length;
    
    ///overlap idx
    srt_i->n = 0;
    oa = in0->buffer; on = in0->length; m0 = 0;
    for (k = 0; k < on; k++) {
        if(oa[k].el) {
            one++; continue;
        }
        m = oa[k].tn; m <<= 1; m |= ((uint64_t)oa[k].rev); m <<= 32; m |= (k<<1); m |= m0;
        kv_push(uint64_t, *srt_i, m);
    }
    oa = in1->buffer; on = in1->length; m0 = 1;
    for (k = 0; k < on; k++) {
        // if(oa[k].el) continue;
        m = oa[k].tn; m <<= 1; m |= ((uint64_t)oa[k].rev); m <<= 32; m |= (k<<1); m |= m0;
        kv_push(uint64_t, *srt_i, m);
    }
    radix_sort_ec64(srt_i->a, srt_i->a + srt_i->n);

    // get the list of anchors
    get_mz1(rs, rl, mz_w, mz_k, 0, !(asm_opt.flag & HA_F_NO_HPC), ab, ha_flt_tab, NULL/**ha_idx**/, asm_opt.mz_sample_dist, k_flag, dbg_ct, NULL, -1, asm_opt.dp_min_len, -1, sp, asm_opt.mz_rewin, 0, NULL, 0);

    h_ec_lchain_re_gen_srt(ab, ha_idx, ol, cl);

    k = 1; l = 0; i = 0; n = zn = 0;
    while(h_ec_lchain_re_gen_qry(ab, &k, &l, &i, srt_i->a, srt_i->n, &tid, &trev)) {
        
        if(trev) recover_UC_Read_RC(tu, rref, tid);
        else recover_UC_Read(tu, rref, tid);

        ol0 = ol->length; om = 0;
        if(h_ec_lchain_re_chn(ab, l, k, rid, rs, rl, tid, tu->seq, tu->length, trev, mz_w, mz_k, ol, cl, bw_thres, apend_be, max_cnt, min_cnt, gen_off, enable_mcopy, mcopy_rate, mcopy_khit_cut, max_skip, max_iter, max_dis, quick_check, chn_pen_gap, chn_pen_skip, &tq, scb.a, &n, &zn)) {
            assert(ol->length - ol0 == 1);
            ol->list[ol0].y_pos_strand = 0;
            if(gen_hc_r_alin_re(&(ol->list[ol0]), cl, rs, rl, tu->seq, tu->length, exz, aux_o, asm_opt.max_ov_diff_ec, w.window_length, rid, E_KHIT, 1, buf)) {
                ol->list[ol0].y_pos_strand = trev; om = 1;
            } else {///unmatch
                clear_fake_cigar(&(ol->list[ol0].f_cigar));
                clear_window_list_alloc(&(ol->list[ol0].w_list));
                clear_window_list_alloc(&(ol->list[ol0].boundary_cigars));
                ol->length--;
            }
        }

        if(om) {
            srt_i->a[i] >>= 32; srt_i->a[i] <<= 32; srt_i->a[i] |= ((uint64_t)((uint32_t)-1));
        }

        l = k; k++; 
    }

    for (k = m = 0; k < srt_i->n; k++) {
        if(((uint32_t)srt_i->a[k]) == ((uint32_t)-1)) continue;
        srt_i->a[m++] = srt_i->a[k];
    }
    // fprintf(stderr, "[M::%s]\ttot::%lu\tremain::%lu\n", __func__, (uint64_t)srt_i->n, m);
    srt_i->n = m;
    


    oa = in0->buffer; on = in0->length;
    for (k = 0; k < on; k++) {
        if(oa[k].el) {
            z = &(ol->list[ol->length++]);
            z->x_id = rid; z->y_id = oa[k].tn;
            z->x_pos_strand = 0; z->y_pos_strand = oa[k].rev;
            z->x_pos_s = (uint32_t)oa[k].qns;
            z->x_pos_e = oa[k].qe - 1;
            z->y_pos_s = oa[k].ts;
            z->y_pos_e = oa[k].te - 1;

            z->is_match = 1;
            z->align_length = z->overlapLen = z->shared_seed = z->x_pos_e + 1 - z->x_pos_s;
            z->non_homopolymer_errors = z->strong = 0;

            set_exact_exz(exz, z->x_pos_s, z->x_pos_e + 1, z->y_pos_s, z->y_pos_e + 1); push_alnw(z, exz);

            // if(oa[k].tn == 1945) fprintf(stderr, "-em-[M::%s]\tqn::%u\ttn::%u\terr::%u\n", __func__, rid, oa[k].tn, ol->list[ol->length-1].non_homopolymer_errors);
        }
    }
    m = ol->length;


    clear_Candidates_list(cl);
    for (k = 0; k < srt_i->n; k++) {
        ol0 = ol->length;
        if(srt_i->a[k]&1) {
            p = &(in1->buffer[((uint32_t)srt_i->a[k])>>1]);
        } else {
            p = &(in0->buffer[((uint32_t)srt_i->a[k])>>1]);
        }
        
        if(p->rev) recover_UC_Read_RC(tu, rref, p->tn);
        else recover_UC_Read(tu, rref, p->tn);

        get_pi_ec_chain(ab, rid, rl, p->tn, tu->seq, tu->length, mz_w, mz_k, ol, cl, bw_thres, apend_be, k_flag, dbg_ct, sp, high_occ, low_occ, gen_off, enable_mcopy, mcopy_rate, mcopy_khit_cut, max_skip, max_iter, max_dis, quick_check, chn_pen_gap, chn_pen_skip);
        assert(ol->length - ol0 <= 1);
        if((ol->length > ol0) && (gen_hc_r_alin_re(&(ol->list[ol0]), cl, rs, rl, tu->seq, tu->length, exz, aux_o, asm_opt.max_ov_diff_ec, w.window_length, rid, E_KHIT, 1, buf))) {
            ol->list[ol0].y_pos_strand = p->rev;
            // if(oa[k].tn == 15382) fprintf(stderr, "-mm-[M::%s]\tqn::%u\ttn::%u\terr::%u\n", __func__, rid, oa[k].tn, ol->list[ol->length-1].non_homopolymer_errors);
        } 

        if((ol->length <= ol0) || (ol->list[ol0].is_match != 1)) continue;

        if(m != ol0) {
            t = ol->list[m];
            ol->list[m] = ol->list[ol0];
            ol->list[ol0] = t;
        }

        m++;
    }
    
    ol->length = m;
    
    // fprintf(stderr, "[M::%s]\tnew_n::%lu\told_n::%lu\n", __func__, ol->length, m0);
    // fprintf(stderr, "-1-[M::%s]\tnew_n::%lu\told_n::%u\n", __func__, ol->length, in0->length + in1->length);
    assert(ol->length <= (in0->length + in1->length));


    // dbg_overlap_region_cigar(ol->list, ol->length, rs, rref, tu);

    return aux_o;
}


overlap_region* h_ec_lchain_fast(ha_abuf_t *ab, uint32_t rid, UC_Read *qu, UC_Read *tu, uint64_t mz_w, uint64_t mz_k, All_reads *rref, overlap_region_alloc *ol, Candidates_list *cl, bit_extz_t *exz, asg16_v *buf, asg64_v *srt_i, double bw_thres, 
								 int apend_be, kvec_t_u8_warp* k_flag, kvec_t_u64_warp* dbg_ct, st_mt_t *sp, uint32_t *high_occ, uint32_t *low_occ, uint32_t is_accurate, uint32_t gen_off, int64_t enable_mcopy, double mcopy_rate, uint32_t mcopy_khit_cut, ma_hit_t_alloc *in0, ma_hit_t_alloc *in1, double sh)
{
    // fprintf(stderr, "-0-[M::%s]\tnew_n::%lu\told_n::%u\n", __func__, ol->length, in0->length + in1->length);
    // fprintf(stderr, "-mm-[M::%s]\tchain_cutoff::%u\n", __func__, chain_cutoff);
    uint64_t on = 0, k, l, i, one = 0, ol0, wl = (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), m, m0, tid, trev, max_cnt = UINT32_MAX, min_cnt = 0, is_match; ma_hit_t *oa = NULL, *p = NULL; overlap_region *aux_o = NULL, *z = NULL; Window_Pool w; double err = asm_opt.max_ov_diff_ec; tiny_queue_t tq; memset(&tq, 0, sizeof(tiny_queue_t));
    char* rs = qu->seq; uint64_t rl = qu->length; int64_t n, zn, om; uint64_t aq[2], at[2], bq[2], bt[2], ovlp, os, oe;
    int64_t max_skip, max_iter, max_dis, quick_check; double chn_pen_gap, chn_pen_skip; 
	set_lchain_dp_op(is_accurate, mz_k, &max_skip, &max_iter, &max_dis, &chn_pen_gap, &chn_pen_skip, &quick_check);
    init_Window_Pool(&w, rl, wl, (int)(1.0/err));
    
    ///cutoff
    if(high_occ) {
        max_cnt = (*high_occ);
        if(max_cnt < 2) max_cnt = 2;
    }
    if(low_occ) {
        min_cnt = (*low_occ);
        if(min_cnt < 2) min_cnt = 2;
    }
    
    ///memory
    ol->length = 0; on = in0->length + in1->length + 1;
    if(on > ol->size) {
        REALLOC(ol->list, on);
        memset(ol->list+ol->size, 0, sizeof(overlap_region)*(on-ol->size));
        ol->size = on;   
    }
    aux_o = &(ol->list[on-1]); ol->mapped_overlaps_length = 0; on = in0->length + in1->length;
    
    ///overlap idx
    srt_i->n = 0;
    oa = in0->buffer; on = in0->length; m0 = 0;
    for (k = 0; k < on; k++) {
        if(oa[k].el) {
            one++; continue;
        }
        m = oa[k].tn; m <<= 1; m |= ((uint64_t)oa[k].rev); m <<= 32; m |= (k<<1); m |= m0;
        kv_push(uint64_t, *srt_i, m);
    }
    oa = in1->buffer; on = in1->length; m0 = 1;
    for (k = 0; k < on; k++) {
        // if(oa[k].el) continue;
        m = oa[k].tn; m <<= 1; m |= ((uint64_t)oa[k].rev); m <<= 32; m |= (k<<1); m |= m0;
        kv_push(uint64_t, *srt_i, m);
    }
    radix_sort_ec64(srt_i->a, srt_i->a + srt_i->n);

    // get the list of anchors
    get_mz1(rs, rl, mz_w, mz_k, 0, !(asm_opt.flag & HA_F_NO_HPC), ab, ha_flt_tab, NULL/**ha_idx**/, asm_opt.mz_sample_dist, k_flag, dbg_ct, NULL, -1, asm_opt.dp_min_len, -1, sp, asm_opt.mz_rewin, 0, NULL, 0);

    h_ec_lchain_re_gen_srt(ab, ha_idx, ol, cl);

    k = 1; l = 0; i = 0; n = zn = 0;
    while(h_ec_lchain_re_gen_qry(ab, &k, &l, &i, srt_i->a, srt_i->n, &tid, &trev)) {
        
        if(trev) recover_UC_Read_RC(tu, rref, tid);
        else recover_UC_Read(tu, rref, tid);

        ol0 = ol->length; om = 0;
        if(h_ec_lchain_re_chn(ab, l, k, rid, rs, rl, tid, tu->seq, tu->length, trev, mz_w, mz_k, ol, cl, bw_thres, apend_be, max_cnt, min_cnt, gen_off, enable_mcopy, mcopy_rate, mcopy_khit_cut, max_skip, max_iter, max_dis, quick_check, chn_pen_gap, chn_pen_skip, &tq, scb.a, &n, &zn)) {
            assert(ol->length - ol0 == 1);
            ol->list[ol0].y_pos_strand = trev; om = 1; ol->list[ol0].shared_seed = 0; ol->list[ol0].is_match = 0;
            
            assert(((srt_i->a[i]>>33) == ol->list[ol0].y_id) && (((srt_i->a[i]>>32)&1) == ol->list[ol0].y_pos_strand));
            if(srt_i->a[i]&1) {
                p = &(in1->buffer[((uint32_t)srt_i->a[i])>>1]); is_match = 2;
            } else {
                p = &(in0->buffer[((uint32_t)srt_i->a[i])>>1]); is_match = 1;
            }
            ol->list[ol0].strong = p->ml; ol->list[ol0].without_large_indel = p->no_l_indel;

            aq[0] = (uint32_t)p->qns; aq[1] = p->qe; 
            at[0] = p->ts; at[1] = p->te;

            bq[0] = ol->list[ol0].x_pos_s; bq[1] = ol->list[ol0].x_pos_e + 1;
            bt[0] = ol->list[ol0].y_pos_s; bt[1] = ol->list[ol0].y_pos_e + 1;
            
            os = MAX(aq[0], bq[0]); oe = MIN(aq[1], bq[1]);
            ovlp = ((oe>os)? (oe-os):0);
            if(!((ovlp) && (ovlp >= ((aq[1] - aq[0])*sh)) && ((ovlp >= ((bq[1] - bq[0])*sh))))) om = 0;

            os = MAX(at[0], bt[0]); oe = MIN(at[1], bt[1]);
            ovlp = ((oe>os)? (oe-os):0);
            if(!((ovlp) && (ovlp >= ((at[1] - at[0])*sh)) && ((ovlp >= ((bt[1] - bt[0])*sh))))) om = 0;

            if(om) {
                if(exact_ec_check(rs, rl, tu->seq, tu->length, bq[0], bq[1], bt[0], bt[1])) {
                    if(is_match == 2) {
                        ol->list[ol0].strong = 0; ol->list[ol0].without_large_indel = 1;
                    }
                    is_match = 1; ol->list[ol0].shared_seed = 1;
                }
                ol->list[ol0].is_match = is_match;
            } else {///unmatch
                clear_fake_cigar(&(ol->list[ol0].f_cigar));
                clear_window_list_alloc(&(ol->list[ol0].w_list));
                clear_window_list_alloc(&(ol->list[ol0].boundary_cigars));
                ol->length--;
            }
        }

        if(om) {
            srt_i->a[i] >>= 32; srt_i->a[i] <<= 32; srt_i->a[i] |= ((uint64_t)((uint32_t)-1));
        }

        l = k; k++; 
    }

    for (k = m = 0; k < srt_i->n; k++) {
        if(((uint32_t)srt_i->a[k]) == ((uint32_t)-1)) continue;
        srt_i->a[m++] = srt_i->a[k];
    }
    // fprintf(stderr, "[M::%s]\ttot::%lu\tremain::%lu\n", __func__, (uint64_t)srt_i->n, m);
    srt_i->n = m;
    


    oa = in0->buffer; on = in0->length;
    for (k = 0; k < on; k++) {
        if(oa[k].el) {
            z = &(ol->list[ol->length++]);
            z->x_id = rid; z->y_id = oa[k].tn;
            z->x_pos_strand = 0; z->y_pos_strand = oa[k].rev;
            z->x_pos_s = (uint32_t)oa[k].qns;
            z->x_pos_e = oa[k].qe - 1;
            z->y_pos_s = oa[k].ts;
            z->y_pos_e = oa[k].te - 1;

            z->align_length = z->overlapLen = z->x_pos_e + 1 - z->x_pos_s;
            z->non_homopolymer_errors = 0;

            z->is_match = 1; z->shared_seed = 1;
            z->strong = oa[k].ml; z->without_large_indel = oa[k].no_l_indel;

            set_exact_exz(exz, z->x_pos_s, z->x_pos_e + 1, z->y_pos_s, z->y_pos_e + 1); push_alnw(z, exz);

            // if(oa[k].tn == 1945) fprintf(stderr, "-em-[M::%s]\tqn::%u\ttn::%u\terr::%u\n", __func__, rid, oa[k].tn, ol->list[ol->length-1].non_homopolymer_errors);
        }
    }
    /**
    m = ol->length;


    clear_Candidates_list(cl);
    for (k = 0; k < srt_i->n; k++) {
        ol0 = ol->length;
        if(srt_i->a[k]&1) {
            p = &(in1->buffer[((uint32_t)srt_i->a[k])>>1]);
        } else {
            p = &(in0->buffer[((uint32_t)srt_i->a[k])>>1]);
        }
        
        if(p->rev) recover_UC_Read_RC(tu, rref, p->tn);
        else recover_UC_Read(tu, rref, p->tn);

        get_pi_ec_chain(ab, rid, rl, p->tn, tu->seq, tu->length, mz_w, mz_k, ol, cl, bw_thres, apend_be, k_flag, dbg_ct, sp, high_occ, low_occ, gen_off, enable_mcopy, mcopy_rate, mcopy_khit_cut, max_skip, max_iter, max_dis, quick_check, chn_pen_gap, chn_pen_skip);
        assert(ol->length - ol0 <= 1);
        if((ol->length > ol0) && (gen_hc_r_alin_re(&(ol->list[ol0]), cl, rs, rl, tu->seq, tu->length, exz, aux_o, asm_opt.max_ov_diff_ec, w.window_length, rid, E_KHIT, 1, buf))) {
            ol->list[ol0].y_pos_strand = p->rev;
            // if(oa[k].tn == 15382) fprintf(stderr, "-mm-[M::%s]\tqn::%u\ttn::%u\terr::%u\n", __func__, rid, oa[k].tn, ol->list[ol->length-1].non_homopolymer_errors);
        } 

        if((ol->length <= ol0) || (ol->list[ol0].is_match != 1)) continue;

        if(m != ol0) {
            t = ol->list[m];
            ol->list[m] = ol->list[ol0];
            ol->list[ol0] = t;
        }

        m++;
    }
    
    ol->length = m;
    **/
    
    // fprintf(stderr, "[M::%s]\tnew_n::%lu\told_n::%lu\n", __func__, ol->length, m0);
    // fprintf(stderr, "-1-[M::%s]\tnew_n::%lu\told_n::%u\n", __func__, ol->length, in0->length + in1->length);
    assert(ol->length <= (in0->length + in1->length));


    // dbg_overlap_region_cigar(ol->list, ol->length, rs, rref, tu);

    return aux_o;
}

void h_ec_lchain_fast_new(ha_abuf_t *ab, uint32_t rid, UC_Read *qu, UC_Read *tu, All_reads *rref, overlap_region_alloc *ol, Candidates_list *cl, bit_extz_t *exz, asg16_v *buf, asg64_v *srt_i, ma_hit_t_alloc *in0, ma_hit_t_alloc *in1, double sh)
{
    // fprintf(stderr, "-0-[M::%s]\tnew_n::%lu\told_n::%u\n", __func__, ol->length, in0->length + in1->length);
    // fprintf(stderr, "-mm-[M::%s]\tchain_cutoff::%u\n", __func__, chain_cutoff);
    uint64_t on = 0, k, i, l, m, m0, tid, trev, is_match, is_usrt = 0; ma_hit_t *oa = NULL, *p = NULL; overlap_region *z = NULL, t; 
    char* rs = qu->seq; uint64_t rl = qu->length; int64_t om; uint64_t aq[2], at[2], bq[2], bt[2], ovlp, os, oe;
    

    
    ///overlap idx
    srt_i->n = 0;
    oa = in0->buffer; on = in0->length; m0 = 0;
    for (k = 0; k < on; k++) {
        // if(oa[k].el) continue;
        m = oa[k].tn; m <<= 1; m |= ((uint64_t)oa[k].rev); m <<= 32; m |= (k<<1); m |= m0;
        kv_push(uint64_t, *srt_i, m);
    }
    oa = in1->buffer; on = in1->length; m0 = 1;
    for (k = 0; k < on; k++) {
        // if(oa[k].el) continue;
        m = oa[k].tn; m <<= 1; m |= ((uint64_t)oa[k].rev); m <<= 32; m |= (k<<1); m |= m0;
        kv_push(uint64_t, *srt_i, m);
    }
    radix_sort_ec64(srt_i->a, srt_i->a + srt_i->n);

    k = 0; i = 0; 
    for (k = m = 0; k < ol->length; k++) {
        z = &(ol->list[k]); tid = z->y_id; trev = z->y_pos_strand;
        z->non_homopolymer_errors = 0;
        for (; (i < srt_i->n) && ((srt_i->a[i]>>32) < ((tid<<1)|trev)); i++);
        if((i < srt_i->n) && ((srt_i->a[i]>>32) == ((tid<<1)|trev))) {
            om = 1; z->shared_seed = 0; z->is_match = 0;
            if(srt_i->a[i]&1) {
                p = &(in1->buffer[((uint32_t)srt_i->a[i])>>1]); is_match = 2;
            } else {
                p = &(in0->buffer[((uint32_t)srt_i->a[i])>>1]); is_match = 1;
            }
            z->strong = p->ml; z->without_large_indel = p->no_l_indel;
            
            aq[0] = (uint32_t)p->qns; aq[1] = p->qe; 
            at[0] = p->ts; at[1] = p->te;

            bq[0] = z->x_pos_s; bq[1] = z->x_pos_e + 1;
            bt[0] = z->y_pos_s; bt[1] = z->y_pos_e + 1;
            
            os = MAX(aq[0], bq[0]); oe = MIN(aq[1], bq[1]);
            ovlp = ((oe>os)? (oe-os):0);
            if(!((ovlp) && (ovlp >= ((aq[1] - aq[0])*sh)) && ((ovlp >= ((bq[1] - bq[0])*sh))))) om = 0;
            z->non_homopolymer_errors += ((aq[1] - aq[0]) - ovlp);

            os = MAX(at[0], bt[0]); oe = MIN(at[1], bt[1]);
            ovlp = ((oe>os)? (oe-os):0);
            if(!((ovlp) && (ovlp >= ((at[1] - at[0])*sh)) && ((ovlp >= ((bt[1] - bt[0])*sh))))) om = 0;
            z->non_homopolymer_errors += ((at[1] - at[0]) - ovlp);

            if(om) {
                if(is_match == 1 && p->el == 1) p->el = 0;
                resize_UC_Read(tu, bt[1] - bt[0]);
                recover_UC_Read_sub_region(tu->seq, bt[0], bt[1] - bt[0], trev, rref, tid);
                if(exact_ec_check(rs, rl, tu->seq, bt[1] - bt[0], bq[0], bq[1], 0, bt[1] - bt[0])) {
                    if(is_match == 2) {
                        z->strong = 0; z->without_large_indel = 1;
                    }
                    is_match = 1; z->shared_seed = 1;
                }
                z->is_match = is_match;
            }
        } else {
            om = 0;
            bq[0] = z->x_pos_s; bq[1] = z->x_pos_e + 1;
            bt[0] = z->y_pos_s; bt[1] = z->y_pos_e + 1;
            resize_UC_Read(tu, bt[1] - bt[0]);
            recover_UC_Read_sub_region(tu->seq, bt[0], bt[1] - bt[0], trev, rref, tid);
            if(exact_ec_check(rs, rl, tu->seq, bt[1] - bt[0], bq[0], bq[1], 0, bt[1] - bt[0])) {
                z->strong = 0; z->without_large_indel = 1;
                z->shared_seed = 1; z->is_match = 1; om = 1;
            }
        }

        if(om) {
            if(m != k) {
                t = ol->list[m];
                ol->list[m] = ol->list[k];
                ol->list[k] = t;
            }
            m++;
        }
    }
    ol->length = m;


    oa = in0->buffer; on = in0->length;
    for (k = 0; k < on; k++) {
        if(oa[k].el) {
            // z = &(ol->list[ol->length++]);
            kv_pushp_ol(overlap_region, (*ol), &z);
            clear_fake_cigar(&(z->f_cigar));
            clear_window_list_alloc(&(z->w_list));
            clear_window_list_alloc(&(z->boundary_cigars));
            
            z->x_id = rid; z->y_id = oa[k].tn;
            z->x_pos_strand = 0; z->y_pos_strand = oa[k].rev;
            z->x_pos_s = (uint32_t)oa[k].qns;
            z->x_pos_e = oa[k].qe - 1;
            z->y_pos_s = oa[k].ts;
            z->y_pos_e = oa[k].te - 1;

            z->align_length = z->overlapLen = z->x_pos_e + 1 - z->x_pos_s;
            z->non_homopolymer_errors = 0;

            z->is_match = 1; z->shared_seed = 1;
            z->strong = oa[k].ml; z->without_large_indel = oa[k].no_l_indel;

            set_exact_exz(exz, z->x_pos_s, z->x_pos_e + 1, z->y_pos_s, z->y_pos_e + 1); push_alnw(z, exz);

            is_usrt = 1;
            // if(oa[k].tn == 1945) fprintf(stderr, "-em-[M::%s]\tqn::%u\ttn::%u\terr::%u\n", __func__, rid, oa[k].tn, ol->list[ol->length-1].non_homopolymer_errors);
        }
    }

    if(is_usrt) overlap_region_sort_y_id(ol->list, ol->length);

    if(ol->length > 1) {///for duplicated chains
        uint64_t mm_k, s; int64_t mm_sc, sc;
        for (k = 1, l = m = 0; k <= ol->length; k++) {
            if(k == ol->length || ol->list[k].y_id != ol->list[l].y_id) {
                mm_k = l;
                if(k - l > 1) {
                    for (s = l, mm_sc = INT32_MIN, mm_k = ((uint64_t)-1); s < k; s++) {
                        z = &(ol->list[s]);
                        sc = z->non_homopolymer_errors; sc = - sc;
                        if((sc > mm_sc) || ((sc == mm_sc) && ((ol->list[mm_k].x_pos_e+1-ol->list[mm_k].x_pos_s) < (z->x_pos_e+1-z->x_pos_s)))) {
                            mm_sc = sc; mm_k = s;
                        }
                    }
                }
                if(mm_k != ((uint64_t)-1)) {
                    if(mm_k != m) {
                        t = ol->list[mm_k];
                        ol->list[mm_k] = ol->list[m];
                        ol->list[m] = t;
                    }
                    m++;
                }
                l = k;
            }
        }
        ol->length = m;
    }
}

overlap_region* h_ec_lchain_re3(ha_abuf_t *ab, uint32_t rid, UC_Read *qu, UC_Read *tu, uint64_t mz_w, uint64_t mz_k, All_reads *rref, overlap_region_alloc *ol, Candidates_list *cl, bit_extz_t *exz, asg16_v *buf, asg64_v *srt_i, double bw_thres, 
                                 int apend_be, kvec_t_u8_warp* k_flag, kvec_t_u64_warp* dbg_ct, st_mt_t *sp, uint32_t *high_occ, uint32_t *low_occ, uint32_t is_accurate, uint32_t gen_off, int64_t enable_mcopy, double mcopy_rate, uint32_t mcopy_khit_cut, ma_hit_t_alloc *in0, ma_hit_t_alloc *in1)
{
    // fprintf(stderr, "-mm-[M::%s]\tchain_cutoff::%u\n", __func__, chain_cutoff);
    uint64_t on = 0, k, one = 0, ol0, wl = (asm_opt.is_ont)?(WINDOW_OHC):(WINDOW_HC), m, m0, tid, trev; ma_hit_t *oa = NULL, *p = NULL; overlap_region *aux_o = NULL, *z = NULL, t; Window_Pool w; double err = asm_opt.max_ov_diff_ec;
    char* rs = qu->seq; uint64_t rl = qu->length; 
    int64_t max_skip, max_iter, max_dis, quick_check; double chn_pen_gap, chn_pen_skip; 
    set_lchain_dp_op(is_accurate, mz_k, &max_skip, &max_iter, &max_dis, &chn_pen_gap, &chn_pen_skip, &quick_check);
    init_Window_Pool(&w, rl, wl, (int)(1.0/err));

    srt_i->n = 0;
    oa = in0->buffer; on = in0->length; m0 = 0;
    for (k = 0; k < on; k++) {
        m = oa[k].tn; m <<= 1; m |= ((uint64_t)oa[k].rev); m <<= 32; 
        if(oa[k].el) {
            one++; m |= ((uint32_t)-1);
        } else {
           m |= (k<<1); m |= m0;
        }
        kv_push(uint64_t, *srt_i, m);
    }
    oa = in1->buffer; on = in1->length; m0 = 1;
    for (k = 0; k < on; k++) {
        // if(oa[k].el) continue;
        m = oa[k].tn; m <<= 1; m |= ((uint64_t)oa[k].rev); m <<= 32; m |= (k<<1); m |= m0;
        kv_push(uint64_t, *srt_i, m);
    }
    radix_sort_ec64(srt_i->a, srt_i->a + srt_i->n);

    // get the list of anchors
    get_mz1(rs, rl, mz_w, mz_k, 0, !(asm_opt.flag & HA_F_NO_HPC), ab, ha_flt_tab, NULL/**ha_idx**/, asm_opt.mz_sample_dist, k_flag, dbg_ct, NULL, -1, asm_opt.dp_min_len, -1, sp, asm_opt.mz_rewin, 0, NULL, 0);

    h_ec_lchain_re_gen3(ab, rid, rs, rl, mz_w, mz_k, ha_idx, rref, ol, cl, bw_thres, apend_be, k_flag, dbg_ct, sp, high_occ, low_occ, gen_off, enable_mcopy, mcopy_rate, mcopy_khit_cut, 
            max_skip, max_iter, max_dis, quick_check, chn_pen_gap, chn_pen_skip, tu, srt_i, scb.a);

    
    ///max size
    on = ol->length + one + srt_i->n + 1; m0 = on - 1;
    if(on > ol->size) {
        REALLOC(ol->list, on);
        memset(ol->list+ol->size, 0, sizeof(overlap_region)*(on-ol->size));
        ol->size = on;   
    }
    aux_o = &(ol->list[on-1]); ol->mapped_overlaps_length = 0; on = ol->length;

    // fprintf(stderr, "-0-[M::%s]\n", __func__);

    gen_hc_r_alin(ol, cl, rref, qu, tu, exz, aux_o, asm_opt.max_ov_diff_ec, w.window_length, rid, E_KHIT, 1, buf, 0, -1, -1, 0, 0, -1, -1, NULL, NULL); rs = qu->seq; 

    // fprintf(stderr, "-1-[M::%s]\n", __func__);

    ///handle unmatched chain
    for (k = m = ol->length; k < on; k++) {
        clear_fake_cigar(&(ol->list[k].f_cigar));
        clear_window_list_alloc(&(ol->list[k].w_list));
        clear_window_list_alloc(&(ol->list[k].boundary_cigars));

        ol0 = ol->length;

        tid = ol->list[k].y_id; trev = ol->list[k].y_pos_strand;
        if(trev) recover_UC_Read_RC(tu, rref, tid);
        else recover_UC_Read(tu, rref, tid);

        get_pi_ec_chain(ab, rid, rl, tid, tu->seq, tu->length, mz_w, mz_k, ol, cl, bw_thres, apend_be, k_flag, dbg_ct, sp, high_occ, low_occ, gen_off, enable_mcopy, mcopy_rate, mcopy_khit_cut, max_skip, max_iter, max_dis, quick_check, chn_pen_gap, chn_pen_skip);
        assert(ol->length - ol0 <= 1);
        if((ol->length > ol0) && (gen_hc_r_alin_re(&(ol->list[ol0]), cl, rs, rl, tu->seq, tu->length, exz, aux_o, asm_opt.max_ov_diff_ec, w.window_length, rid, E_KHIT, 1, buf))) {
            ol->list[ol0].y_pos_strand = trev;
            // if(oa[k].tn == 15382) fprintf(stderr, "-mm-[M::%s]\tqn::%u\ttn::%u\terr::%u\n", __func__, rid, oa[k].tn, ol->list[ol->length-1].non_homopolymer_errors);
        } 

        if((ol->length <= ol0) || (ol->list[ol0].is_match != 1)) continue;

        if(m != ol0) {
            t = ol->list[m];
            ol->list[m] = ol->list[ol0];
            ol->list[ol0] = t;
        }

        m++;
    }
    ol->length = m;

    for (k = ol->length; k < on; k++) {
        clear_fake_cigar(&(ol->list[k].f_cigar));
        clear_window_list_alloc(&(ol->list[k].w_list));
        clear_window_list_alloc(&(ol->list[k].boundary_cigars));
    }

    // fprintf(stderr, "[M::%s]\tnew::%lu\told::%lu\n", __func__, ol->length, ol0);
    
    oa = in0->buffer; on = in0->length;
    for (k = 0; k < on; k++) {
        if(oa[k].el) {
            z = &(ol->list[ol->length++]);
            z->x_id = rid; z->y_id = oa[k].tn;
            z->x_pos_strand = 0; z->y_pos_strand = oa[k].rev;
            z->x_pos_s = (uint32_t)oa[k].qns;
            z->x_pos_e = oa[k].qe - 1;
            z->y_pos_s = oa[k].ts;
            z->y_pos_e = oa[k].te - 1;

            z->is_match = 1;
            z->align_length = z->overlapLen = z->shared_seed = z->x_pos_e + 1 - z->x_pos_s;
            z->non_homopolymer_errors = z->strong = 0;

            set_exact_exz(exz, z->x_pos_s, z->x_pos_e + 1, z->y_pos_s, z->y_pos_e + 1); push_alnw(z, exz);

            // if(oa[k].tn == 1945) fprintf(stderr, "-em-[M::%s]\tqn::%u\ttn::%u\terr::%u\n", __func__, rid, oa[k].tn, ol->list[ol->length-1].non_homopolymer_errors);
        }
    }
    m = ol->length;

    for (k = 0; k < srt_i->n; k++) {
        ol0 = ol->length;
        if(srt_i->a[k]&1) {
            p = &(in1->buffer[((uint32_t)srt_i->a[k])>>1]);
        } else {
            p = &(in0->buffer[((uint32_t)srt_i->a[k])>>1]);
        }
        
        if(p->rev) recover_UC_Read_RC(tu, rref, p->tn);
        else recover_UC_Read(tu, rref, p->tn);

        get_pi_ec_chain(ab, rid, rl, p->tn, tu->seq, tu->length, mz_w, mz_k, ol, cl, bw_thres, apend_be, k_flag, dbg_ct, sp, high_occ, low_occ, gen_off, enable_mcopy, mcopy_rate, mcopy_khit_cut, max_skip, max_iter, max_dis, quick_check, chn_pen_gap, chn_pen_skip);
        assert(ol->length - ol0 <= 1);
        if((ol->length > ol0) && (gen_hc_r_alin_re(&(ol->list[ol0]), cl, rs, rl, tu->seq, tu->length, exz, aux_o, asm_opt.max_ov_diff_ec, w.window_length, rid, E_KHIT, 1, buf))) {
            ol->list[ol0].y_pos_strand = p->rev;
            // if(oa[k].tn == 15382) fprintf(stderr, "-mm-[M::%s]\tqn::%u\ttn::%u\terr::%u\n", __func__, rid, oa[k].tn, ol->list[ol->length-1].non_homopolymer_errors);
        } 

        if((ol->length <= ol0) || (ol->list[ol0].is_match != 1)) continue;

        if(m != ol0) {
            t = ol->list[m];
            ol->list[m] = ol->list[ol0];
            ol->list[ol0] = t;
        }

        m++;
    }
    
    ol->length = m;

    
    // fprintf(stderr, "[M::%s]\tnew_n::%lu\told_n::%lu\n", __func__, ol->length, m0);
    // fprintf(stderr, "[M::%s]\tnew_n::%lu\told_n::%u\n", __func__, ol->length, in0->length + in1->length);
    // assert(ol->length <= (in0->length + in1->length));


    // dbg_overlap_region_cigar(ol->list, ol->length, rs, rref, tu);

    return aux_o;
}


void gen_ori_seq0(char *tstr, uint64_t tl, UC_Read *qu, asg16_v *sc, uint64_t rid)
{
    uint64_t ck, qk, tk, k, wq[2], wt[2]; uint32_t len; uint16_t c, bq, bt; char *qstr = NULL;
    
    ck = qk = tk = 0;
    while (ck < sc->n) {
        wq[0] = qk; wt[0] = tk;
        ck = pop_trace_bp_f(sc, ck, &c, &bq, &bt, &len);
        if(c != 2) qk += len;
        if(c != 3) tk += len;
        wq[1] = qk; wt[1] = tk;
    }
    if(!(tk == tl)) {
        fprintf(stderr, "[M::%s] rid::%lu, tk::%lu, tl::%lu\n", __func__, rid, tk, tl);
    }
    assert(tk == tl);

    resize_UC_Read(qu, qk); qstr = qu->seq; qu->length = qk;
    ck = qk = tk = 0;
    while (ck < sc->n) {
        wq[0] = qk; wt[0] = tk;
        ck = pop_trace_bp_f(sc, ck, &c, &bq, &bt, &len);
        if(c != 2) qk += len;
        if(c != 3) tk += len;
        wq[1] = qk; wt[1] = tk;

        if(c == 0) {
            memcpy(qstr + wq[0], tstr + wt[0], (wq[1]-wq[0])*sizeof((*qstr)));
        } else if(c == 1 || c == 3) {
            for (k = wq[0]; k < wq[1]; k++) qstr[k] = s_H[bq]; 
        }
        // fprintf(stderr, "%u%c(%c)(x::[%lu,%ld))(y::[%lu,%ld))\n", len, cm[c], ((c==1)||(c==2))?(cc[bt]):('*'), wx[0], wx[1], wy[0], wy[1]); // s_H
    }
}

void gen_cc_fly(asg16_v *sc, char *qstr, uint64_t ql, char *tstr, uint64_t tl, bit_extz_t *exz, double e_rate, uint64_t maxn, uint64_t maxe)
{
    // fprintf(stderr, "[M::%s] ql::%lu, tl::%lu\n", __func__, ql, tl);
    if(ql == 0 && tl == 0) return;
    uint64_t k, ck, qk, tk, wq[2], wt[2], maxl, minl, diff, f, diff0 = 0;
    if(ql > 0 && tl == 0) {
        for (k = 0; k < ql; k++) {
            push_trace_bp_f(sc, 3, seq_nt6_table[(uint32_t)(qstr[k])], (uint16_t)-1, 1, 1); 
        }
        return;
    }
    if(ql == 0 && tl > 0) {
        for (k = 0; k < tl; k++) {
            push_trace_bp_f(sc, 2, (uint16_t)-1, seq_nt6_table[(uint32_t)(tstr[k])], 1, 1); 
        }
        return;
    }
    if(ql == tl && ql == 1) {
        if(qstr[0] == tstr[0]) push_trace_bp_f(sc, 0, (uint16_t)-1, (uint16_t)-1, 1, 1); 
        else push_trace_bp_f(sc, 1, seq_nt6_table[(uint32_t)(qstr[0])], seq_nt6_table[(uint32_t)(tstr[0])], 1, 1); 
        return;
    }



    if(ql >= tl) {
        maxl = ql; minl = tl;
    } else {
        maxl = tl; minl = ql;
    }
    f = 0;
            
    diff = 31;
    if(diff > (maxl - minl)) {
        if(diff > maxl) diff = maxl; 
        diff0 = diff; clear_align(*exz);
        cal_exz_global(tstr, tl, qstr, ql, diff, exz);
        if(is_align(*exz)) f = 1; 
    }

    if(!f) {
        diff = 63;
        if(diff > (maxl - minl)) {
            if(diff > maxl) diff = maxl; 
            if(diff > diff0) {
                diff0 = diff; clear_align(*exz);
                cal_exz_global(tstr, tl, qstr, ql, diff, exz);
                if(is_align(*exz)) f = 1; 
            }
        }
    }

    if(!f) {
        if((maxn > maxl) && (maxe > (maxl - minl))) {
            diff = maxl * e_rate;
            if(diff < 1) diff = 1;
            if(diff > maxe) diff = maxe;
            if(diff > diff0) {
                diff0 = diff; clear_align(*exz);
                cal_exz_global(tstr, tl, qstr, ql, diff, exz);
                if(is_align(*exz)) f = 1; 
            }
        }
    }

    // fprintf(stderr, "[M::%s] f::%lu, err::%d\n", __func__, f, exz->err);

    uint32_t on; uint16_t op;
    if(f) {
        
        for (ck = qk = tk = 0; ck < exz->cigar.n;) {
            wq[0] = qk; wt[0] = tk;
            ck = pop_trace(&(exz->cigar), ck, &op, &on);
            if(op!=2) qk += on;
            if(op!=3) tk += on; 
            wq[1] = qk; wt[1] = tk;

            if(op == 0) {
                push_trace_bp_f(sc, op, (uint16_t)-1, (uint16_t)-1, on, 1); 
            } else if(op == 1) {
                for (k = 0; k < on; k++) {
                    push_trace_bp_f(sc, op, seq_nt6_table[(uint32_t)(qstr[wq[0]+k])], seq_nt6_table[(uint32_t)(tstr[wt[0]+k])], 1, 1); 
                }
            } else if(op == 2) {
                for (k = 0; k < on; k++) {
                    push_trace_bp_f(sc, op, (uint16_t)-1, seq_nt6_table[(uint32_t)(tstr[wt[0]+k])], 1, 1); 
                }
            } else if(op == 3) {
                for (k = 0; k < on; k++) {
                    push_trace_bp_f(sc, op, seq_nt6_table[(uint32_t)(qstr[wq[0]+k])], (uint16_t)-1, 1, 1); 
                }
            }
        }
    } else {
        if(ql > 0) {
            op = 3; on = ql;
            for (k = 0; k < on; k++) {
                push_trace_bp_f(sc, op, seq_nt6_table[(uint32_t)(qstr[k])], (uint16_t)-1, 1, 1); 
            }
        }

        if(tl > 0) {
            op = 2; on = tl;
            for (k = 0; k < on; k++) {
                push_trace_bp_f(sc, op, (uint16_t)-1, seq_nt6_table[(uint32_t)(tstr[k])], 1, 1); 
            }
        }
        
    }
}

void cal_updated_trace_len(asg16_v *sc, uint64_t *ql, uint64_t *tl)
{
    uint64_t ck = 0, qk = 0, tk = 0; uint32_t len; uint16_t c, bq, bt;
    while (ck < sc->n) {
        ck = pop_trace_bp_f(sc, ck, &c, &bq, &bt, &len);
        if(c != 2) qk += len;
        if(c != 3) tk += len;
    }
    *ql = qk; *tl = tk;
}

void gen_updated_trace(asg16_v *qcc, asg16_v *tcc, asg16_v *tcc_res, char *qstr, uint64_t ql, char *tstr, uint64_t tl, asg64_v *srt, bit_extz_t *exz, uint64_t rid)
{
    uint64_t k, ck, qk, tk, wq[2], wt[2], old_dp, dp, s, e, srt_n, si, ei, so, os, oe, *qd, *td, qs, qe, ts, te, q0, t0; 
    asg16_v *cc; uint32_t len; uint16_t c, bq, bt;

    srt->n = 0;

    cc = qcc;
    ck = qk = tk = wq[0] = wq[1] = wt[0] = wt[1] = 0;
    while (ck < cc->n) {
        wq[0] = qk; wt[0] = tk;
        ck = pop_trace_bp_f(cc, ck, &c, &bq, &bt, &len);
        if(c != 2) qk += len;
        if(c != 3) tk += len;
        wq[1] = qk; wt[1] = tk;
        if(c != 0) continue;

        kv_push(uint64_t, (*srt), (wq[0]<<1));
        kv_push(uint64_t, (*srt), ((wq[1]<<1)|1));
    }

    cc = tcc;
    ck = qk = tk = wq[0] = wq[1] = wt[0] = wt[1] = 0;
    while (ck < cc->n) {
        wq[0] = qk; wt[0] = tk;
        ck = pop_trace_bp_f(cc, ck, &c, &bq, &bt, &len);
        if(c != 2) qk += len;
        if(c != 3) tk += len;
        wq[1] = qk; wt[1] = tk;
        if(c != 0) continue;

        kv_push(uint64_t, (*srt), (wt[0]<<1));
        kv_push(uint64_t, (*srt), ((wt[1]<<1)|1));
    }

    // fprintf(stderr, "[M::%s] rid::%lu, ql::%lu, tl::%lu\n", __func__, rid, ql, tl);

    radix_sort_ec64(srt->a, srt->a + srt->n);
    for (k = 0, dp = e = srt_n = 0, s = (uint64_t)-1; k < srt->n; k++) {
        old_dp = dp;
        //if a[k] is qe
        if (srt->a[k]&1) --dp;
        else ++dp;

        if(old_dp >= 2 && s != (uint64_t)-1) {
            e = srt->a[k]>>1;
            if(e > s) srt->a[srt_n++] = ((s<<32)|(e));
        }

        s = (uint64_t)-1;
        if(dp >= 2) s = srt->a[k]>>1;
        // if (old_dp < 2 && dp >= 2) {///old_dp < dp, a[k] is qs
        //     s = srt->a[k]>>1;
        // } else if (old_dp >= 2 && dp < 2) {///old_dp > dp, a[k] is qe
        //     e = srt->a[k]>>1;
        //     if(e > s) {
        //         srt->a[srt_n++] = ((s<<32)|(e));
        //         fprintf(stderr, "[M::%s] x::[%lu,\t%lu)\n", __func__, s, e);
        //     }
        // }
    }

    
    // for (k = 0; k < srt_n; k++) {
    //     fprintf(stderr, "[M::%s] x[%lu]::[%lu,\t%u)\n", __func__, k, srt->a[k]>>32, (uint32_t)srt->a[k]);
    // }
    

    if(srt_n > 0) {
        srt->n = srt_n;

        cc = qcc;
        k = ck = qk = tk = wq[0] = wq[1] = wt[0] = wt[1] = 0;
        while (ck < cc->n) {
            wq[0] = qk; wt[0] = tk;
            ck = pop_trace_bp_f(cc, ck, &c, &bq, &bt, &len);
            if(c != 2) qk += len;
            if(c != 3) tk += len;
            wq[1] = qk; wt[1] = tk;
            if(c != 0) continue;
            si = wq[0]; ei = wq[1];
            so = wt[0]; ///eo = wt[1];

            for (; (k > 0) && ((k >= srt_n) || (((uint32_t)(srt->a[k])) > si)); k--);
            for (; k < srt_n; k++) {
                s = srt->a[k]>>32; e = (uint32_t)(srt->a[k]);
                if(s >= ei) break;
                if(s >= si && e <= ei) {
                    os = so + s - si;
                    oe = so + e - si; 
                    kv_push(uint64_t, (*srt), ((os<<32)|(oe)));
                }
            }
        }
        assert(srt->n == (srt_n<<1));

        cc = tcc;
        k = ck = qk = tk = wq[0] = wq[1] = wt[0] = wt[1] = 0;
        while (ck < cc->n) {
            wq[0] = qk; wt[0] = tk;
            ck = pop_trace_bp_f(cc, ck, &c, &bq, &bt, &len);
            if(c != 2) qk += len;
            if(c != 3) tk += len;
            wq[1] = qk; wt[1] = tk;
            if(c != 0) continue;
            si = wt[0]; ei = wt[1];
            so = wq[0]; ///eo = wq[1];

            for (; (k > 0) && ((k >= srt_n) || (((uint32_t)(srt->a[k])) > si)); k--);
            for (; k < srt_n; k++) {
                s = srt->a[k]>>32; e = (uint32_t)(srt->a[k]);
                // fprintf(stderr, "######[M::%s] t[%lu]::[%lu,\t%lu) i::[%lu,\t%lu)\n", __func__, k, s, e, si, ei);
                if(s >= ei) break;
                if(s >= si && e <= ei) {
                    os = so + s - si;
                    oe = so + e - si; 
                    kv_push(uint64_t, (*srt), ((os<<32)|(oe)));
                    // fprintf(stderr, "[M::%s] ******\n", __func__);
                }
            }
        }
        // if(!(srt->n == (srt_n*3))) {
        //     fprintf(stderr, "[M::%s] rid::%lu, srt_n::%lu, srt->n::%lu\n", __func__, rid, srt_n, (uint64_t)srt->n);
        // }
        assert(srt->n == (srt_n*3));

        
        tcc_res->n = 0; ///reset tcc
        qd = srt->a + srt_n; td = srt->a + srt_n + srt_n; uint64_t nl = 0;///, dbg_ql, dbg_tl;
        for (k = q0 = t0 = 0; k < srt_n; k++) {
            qs = qd[k]>>32; qe = (uint32_t)qd[k];
            ts = td[k]>>32; te = (uint32_t)td[k];
            nl += qs - qe;
            // assert((qe - qs) == (te - ts));
            // assert(!memcmp(qstr + qs, tstr + ts, sizeof((*qstr))*(qe - qs)));

            // if(t0 > ts || q0 > qs) {
            //     fprintf(stderr, "[M::%s] rid::%lu, ql::%lu, tl::%lu\n", __func__, rid, ql, tl);
            // }
            // fprintf(stderr, "[M::%s] qseq::[%lu,%lu), ql::%lu, tseq::[%lu,%lu), tl::%lu\n", __func__, t0, ts, tl, q0, qs, ql);

            gen_cc_fly(tcc_res, tstr + t0, ts - t0, qstr + q0, qs - q0, exz, 0.25, MAX_SIN_L, MAX_SIN_E);

            // cal_updated_trace_len(tcc_res, &dbg_ql, &dbg_tl);
            // assert(dbg_ql == ts && dbg_tl == qs);

            // fprintf(stderr, "******\n");
            
            push_trace_bp_f(tcc_res, 0, (uint16_t)-1, (uint16_t)-1,  qe - qs, 1);

            // cal_updated_trace_len(tcc_res, &dbg_ql, &dbg_tl);
            // assert(dbg_ql == te && dbg_tl == qe);

            q0 = qe; t0 = te;
        }

        qs = ql; ts = tl;
        // fprintf(stderr, "[M::%s] qseq::[%lu,%lu), ql::%lu, tseq::[%lu,%lu), tl::%lu\n", __func__, t0, ts, tl, q0, qs, ql);
        gen_cc_fly(tcc_res, tstr + t0, ts - t0, qstr + q0, qs - q0, exz, 0.25, MAX_SIN_L, MAX_SIN_E);
        // if(!(dbg_ql == ts && dbg_tl == qs)) {
        //     fprintf(stderr, "[M::%s] rid::%lu, qseq::[%lu,%lu), ql::%lu, tseq::[%lu,%lu), tl::%lu\n", __func__, rid, t0, ts, tl, q0, qs, ql);
        // }
        // cal_updated_trace_len(tcc_res, &dbg_ql, &dbg_tl);
        // assert(dbg_ql == ts && dbg_tl == qs);

        // fprintf(stderr, "[M::%s] srt_n::%lu, nl::%lu, ql::%lu, tl::%lu\n", __func__, srt_n, nl, ql, tl);
    } else {
        gen_cc_fly(tcc_res, tstr, tl, qstr, ql, exz, 0.25, MAX_SIN_L, MAX_SIN_E);
    }
}

void update_scb(All_reads *R_INF, asg16_v *scc, asg16_v *scb, asg16_v *scb_res, UC_Read *qu, UC_Read *tu, asg64_v *srt, bit_extz_t *exz, uint64_t rid)
{
    char *qstr = NULL, *tstr = NULL; uint64_t ql = 0, tl = 0;
    uint64_t ck, qk, tk, k, wq[2], wt[2]; uint32_t len; uint16_t c, bq, bt;
    gen_ori_seq0(qu->seq, qu->length, tu, scb, rid); ///tstr = tu->seq; tl = tu->length;

    ck = qk = tk = 0; ql = qu->length;
    while (ck < scc->n) {
        wq[0] = qk; wt[0] = tk;
        ck = pop_trace_bp_f(scc, ck, &c, &bq, &bt, &len);
        if(c != 2) qk += len;
        if(c != 3) tk += len;
        wq[1] = qk; wt[1] = tk;
    }
    assert(qk == ql);
    tl = tk; resize_UC_Read(qu, ql + tl);
    qstr = qu->seq; tstr = qu->seq + ql;

    ck = 0; qk = tk = 0; 
    while (ck < scc->n) {
        wq[0] = qk; wt[0] = tk;
        ck = pop_trace_bp_f(scc, ck, &c, &bq, &bt, &len);
        if(c != 2) qk += len;
        if(c != 3) tk += len;
        wq[1] = qk; wt[1] = tk;
        // if(xk > (uint32_t)p->z.length) fprintf(stderr, "[M::%s] xk::%u, len::%u, c::%u, rid::%ld\n", __func__, xk, (uint32_t)p->z.length, c, i);
        if(c == 0) {
            memcpy(tstr + wt[0], qstr + wq[0], (wq[1]-wq[0])*sizeof((*qstr)));
        } else if(c == 1 || c == 2) {
            for (k = wt[0]; k < wt[1]; k++) tstr[k] = s_H[bt]; 
        }
        // if(i == 700) fprintf(stderr, "|%u%c(%c)(x::%u)(y::%u)", len, cm[c], ((c==1)||(c==2))?(cc[b]):('*'), wx[1], wy[1]); // s_H
    }

    qstr = tstr; ql = tl;
    tstr = tu->seq; tl = tu->length;

    // fprintf(stderr, "\n[M::%s] ql::%lu, tl::%lu, rid::%lu\n", __func__, ql, tl, rid);

    gen_updated_trace(scc, scb, scb_res, qstr, ql, tstr, tl, srt, exz, rid);

    

    ///debug
    // resize_UC_Read(tu, ql + tl);
    // memcpy(tu->seq + tl, qstr, ql); tstr = tu->seq; qstr = tu->seq + tl;

    // resize_UC_Read(qu, ql + tl);
    // memcpy(qu->seq, tu->seq, ql + tl); tstr = qu->seq; qstr = qu->seq + tl;

    // gen_ori_seq0(qstr, ql, tu, scb_res, rid);
    // assert(memcmp(tstr, tu->seq, tl) == 0);
    
}

uint32_t is_well_cal(asg64_v *idx, ma_hit_t_alloc *in0, ma_hit_t_alloc *in1, int64_t ql, int64_t occ_exact)
{
    ma_hit_t_alloc *paf = NULL; uint64_t k, s, e, vn; ma_hit_t *z; idx->n = 0;
    int64_t dp, old_dp, st = 0, ed;

    paf = in0;
    for (k = 0; k < paf->length; k++) {
        z = &(paf->buffer[k]);
        s = ((uint32_t)(z->qns)); e = z->qe;
        kv_push(uint64_t, (*idx), (s<<1));
        kv_push(uint64_t, (*idx), (e<<1)|1);
    }

    paf = in1;
    for (k = 0; k < paf->length; k++) {
        z = &(paf->buffer[k]);
        s = ((uint32_t)(z->qns)); e = z->qe;
        kv_push(uint64_t, (*idx), (s<<1));
        kv_push(uint64_t, (*idx), (e<<1)|1);
    }

    radix_sort_ec64(idx->a, idx->a + idx->n); vn = idx->n;
    for (k = 0, dp = 0, st = ed = 0; k < vn; ++k) {
        old_dp = dp;
        ///if a[j] is qe
        if (idx->a[k]&1) --dp;
        else ++dp;

        ed = idx->a[k]>>1;
        if((ed > st) && ((old_dp + 1) < occ_exact)) return 0;///+1 for self

        st = ed;
    }


    ed = ql; old_dp = dp;
    if((ed > st) && ((old_dp + 1) < occ_exact)) return 0;///+1 for self
    
    return 1;
}

static void worker_hap_dc_ec0(void *data, long i, int tid)
{
    // if(i == 6) fprintf(stderr, "-mm-[M::%s]\tqn::%u::%.*s\tf[i]::%u\n", __func__, (uint32_t)(i), (int)Get_NAME_LENGTH(R_INF, i), Get_NAME((R_INF), i), scc.f[i]);
    if(scc.f[i]) {
        scc.a[i].n = 0; sca.a[i].n = 0;
        // push_trace_bp(&(scc.a[i]), 0, (uint16_t)-1, Get_READ_LENGTH(R_INF, i), 0);
        push_trace_bp_f(&(scc.a[i]), 0, (uint16_t)-1, (uint16_t)-1, Get_READ_LENGTH(R_INF, i), 0);
        return;
    }
    ec_ovec_buf_t0 *b = &(((ec_ovec_buf_t*)data)->a[tid]);
    uint32_t high_occ = asm_opt.hom_cov * (2.0 - HA_KMER_GOOD_RATIO);
    uint32_t low_occ = asm_opt.hom_cov * HA_KMER_GOOD_RATIO;
    asg64_v buf0; overlap_region *aux_o = NULL; uint32_t qlen = 0; int64_t het_a, hom_a;
    set_ec_cov(asm_opt.het_cov, asm_opt.hom_cov, asm_opt.het_cov_set, asm_opt.polyploidy, het_a, hom_a);
    // overlap_region *aux_o = NULL; asg64_v buf0;

    // gen_ovlst_paf(&(R_INF.paf[i]), &(R_INF.reverse_paf[i]), &(b->v64));
    // if(i != 181) return;

    // fprintf(stderr, "-mm-[M::%s]\tqn::%u::%.*s\n", __func__, (uint32_t)(i), (int)Get_NAME_LENGTH(R_INF, i), Get_NAME((R_INF), i));

    recover_UC_Read(&b->self_read, &R_INF, i); qlen = b->self_read.length;


    /**
    if(is_well_cal(&b->v64, &(R_INF.paf[i]), &(R_INF.reverse_paf[i]), b->self_read.length, 4)) {
        // aux_o = h_ec_lchain_re1(b->ab, i, &b->self_read, &b->ovlp_read, asm_opt.mz_win, asm_opt.k_mer_length, &R_INF, &b->olist, &b->clist, &b->exz, &b->v16, &b->v64, 0.02, 1, NULL, NULL, &(b->sp), &high_occ, &low_occ, 1, 1, 0, 2, UINT32_MAX, &(R_INF.paf[i]), &(R_INF.reverse_paf[i]));
        aux_o = h_ec_lchain_re2(b->ab, i, &b->self_read, &b->ovlp_read, asm_opt.mz_win, asm_opt.k_mer_length, &R_INF, &b->olist, &b->clist, &b->exz, &b->v16, &b->v64, 0.02, 1, NULL, NULL, &(b->sp), &high_occ, &low_occ, 1, 1, 0, 2, UINT32_MAX, &(R_INF.paf[i]), &(R_INF.reverse_paf[i]));
    } else {
        aux_o = h_ec_lchain_re3(b->ab, i, &b->self_read, &b->ovlp_read, asm_opt.mz_win, asm_opt.k_mer_length, &R_INF, &b->olist, &b->clist, &b->exz, &b->v16, &b->v64, 0.02, 1, NULL, NULL, &(b->sp), &high_occ, &low_occ, 1, 1, 0, 2, UINT32_MAX, &(R_INF.paf[i]), &(R_INF.reverse_paf[i]));
        // fprintf(stderr, "[M::%s]\tqn::%u::%.*s\n", __func__, (uint32_t)(i), (int)Get_NAME_LENGTH(R_INF, i), Get_NAME((R_INF), i));
    }
    **/
   aux_o = h_ec_lchain_re2(b->ab, i, &b->self_read, &b->ovlp_read, asm_opt.mz_win, asm_opt.k_mer_length, &R_INF, &b->olist, &b->clist, &b->exz, &b->v16, &b->v64, 0.02, 1, NULL, NULL, &(b->sp), &high_occ, &low_occ, 1, 1, 0, 2, UINT32_MAX, &(R_INF.paf[i]), &(R_INF.reverse_paf[i]));
    
    ////for debug
    // scc.a[i].n = 0;
    // push_trace_bp(&(scc.a[i]), 0, (uint16_t)-1, Get_READ_LENGTH(R_INF, i), 0);

    // return;

    // aux_o = h_ec_lchain_re(b->ab, i, b->self_read.seq, b->self_read.length, &b->ovlp_read, asm_opt.mz_win, asm_opt.k_mer_length, &R_INF, &b->olist, &b->clist, &b->exz, &b->v16, 0.02, 1, NULL, NULL, &(b->sp), &high_occ, &low_occ, 1, 1, 0, 2, UINT32_MAX, &(R_INF.paf[i]), &(R_INF.reverse_paf[i]));
    
    b->cnt[0] += b->self_read.length;

    copy_asg_arr(buf0, b->sp); 
    rphase_hc(&b->olist, &R_INF, &b->hap, &b->self_read, &b->ovlp_read, &b->pidx, &b->v64, &buf0, 0, WINDOW_MAX_SIZE, b->self_read.length, 1/**, 1**/, i, (asm_opt.is_ont)?HPC_PL:0, asm_opt.is_ont, ((asm_opt.is_ont)?&(b->clist.chainDP):NULL), /**((asm_opt.is_sc)?&(b->v8q):NULL)**/&(b->v8q), ((asm_opt.is_sc)?&(b->v8t):NULL), (asm_opt.is_ont)?1:0, ((uint64_t)-1), 0, HC0_W, &b->v32, 
    asm_opt.s_hap_cov, asm_opt.infor_cov, het_a, hom_a, asm_opt.polyploidy, -1);
    copy_asg_arr(b->sp, buf0); 

    copy_asg_arr(buf0, b->sp);
    b->cnt[1] += wcns_gen(&b->olist, &R_INF, i, &b->self_read, &b->ovlp_read, &b->exz, &b->pidx, &b->v64, &buf0, 0, 512, b->self_read.length, 3, 0.500001, aux_o, &b->v32, &b->cns, 256, i, ((uint64_t)-1), 
    R_INF.tr[0], R_INF.tr[1], asm_opt.ont_rate, asm_opt.hf_rate, asm_opt.hf_rate_max, NULL);
    copy_asg_arr(b->sp, buf0);

    push_nec_re(aux_o, &(scc.a[i]));
    update_scb(&R_INF, &(scc.a[i]), &(scb.a[i]), &(sca.a[i]), &b->self_read, &b->ovlp_read, &b->v64, &b->exz, i);
    
    push_ne_ovlp(&(R_INF.paf[i]), &b->olist, 1, &R_INF, &(scc.a[i])/**, i, &b->self_read, &b->ovlp_read**/);
    push_ne_ovlp(&(R_INF.reverse_paf[i]), &b->olist, 2, &R_INF, NULL/**, i, NULL, NULL**/);

    check_well_cal(&(scc.a[i]), &b->v64, &(R_INF.paf[i].is_fully_corrected), &(R_INF.paf[i].is_abnormal), qlen, (MIN_COVERAGE_THRESHOLD*2), &(R_INF.paf[i]));
    R_INF.trio_flag[i] = AMBIGU;

    refresh_ec_ovec_buf_t0(b, REFRESH_N);
}

void get_origin_ec_coor(asg16_v *ec, uint64_t *ts, uint64_t *te)
{
    uint64_t ts0 = *ts, te0 = *te, qk = 0, tk = 0, ck = 0, wq[2], wt[2]; uint16_t op, bq, bt, f = 0; uint32_t cl;
    while (ck < ec->n) {
        wq[0] = qk; wt[0] = tk; 
        ck = pop_trace_bp_f(ec, ck, &op, &bq, &bt, &cl);
        if(op != 2) qk += cl;
        if(op != 3) tk += cl;
        wq[1] = qk; wt[1] = tk;  
        if((op == 0) && (wt[0] <= ts0) && (wt[1] >= te0)) {
            (*ts) = wq[0] + ts0 - wt[0]; 
            (*te) = wq[0] + te0 - wt[0]; 
            f = 1;
            break;
        }
    }
    assert(f);
}

static void update_scb0(void *data, long i, int tid)
{
    if(sca.a[i].n) {
        kv_resize(uint16_t, scb.a[i], sca.a[i].n); scb.a[i].n = sca.a[i].n;
        memcpy(scb.a[i].a, sca.a[i].a, scb.a[i].n*sizeof((*(sca.a[i].a))));
    }

    // return;

    if(!scc.f[i]) return;

    ma_hit_t_alloc *ov, *os; uint64_t k, kr, qn, tn, ql, tl, qs, qe, ts, te; ma_hit_t *z, *r = NULL;
    uint64_t ck; uint16_t op, bq, bt; uint32_t cl;
    
    ov = &(R_INF.paf[i]);
    for (k = 0; k < ov->length; k++) {
        z = &(ov->buffer[k]);
        qn = z->qns>>32; tn = z->tn;
        if(scc.f[tn]) continue;

        os = &(R_INF.paf[tn]);
        for (kr = 0; kr < os->length; kr++) {
            if(os->buffer[kr].tn == qn) {
                r = &(os->buffer[kr]);
                break;
            }
        }
        if(kr >= os->length) continue;
        // if(!(r->el)) continue;

        qs = r->ts; qe = r->te;
        ts = (uint32_t)r->qns; te = r->qe;
        z->el = r->el; z->rev = r->rev; z->ml = r->ml; z->no_l_indel = r->no_l_indel;
        if(z->el) {
            get_origin_ec_coor(&(scc.a[tn]), &ts, &te);
        } 

        z->qns = qn; 
        z->qns = z->qns << 32;
        if(z->rev) {
            ql = Get_READ_LENGTH(R_INF, qn);
            tl = ck = 0;
            while (ck < scc.a[tn].n) {
                ck = pop_trace_bp_f(&(scc.a[tn]), ck, &op, &bq, &bt, &cl);
                if(op != 2) tl += cl;
            }
            z->qns = z->qns | (ql - qe);
            z->qe = ql - qs;
            z->ts = tl - te;
            z->te = tl - ts;
        } else {
            z->qns = z->qns | qs;
            z->qe = qe;
            z->ts = ts;
            z->te = te;
        }
    }
}

void dbg_rsc(char *str0, uint64_t l0, char *str1, uint64_t l1, asg16_v *sc, char *real, uint32_t id)
{
    uint64_t ck, xk, yk, k, wx[2], wy[2]; uint32_t len; uint16_t c, bq, bt; 
    
    ck = xk = yk = 0;
    while (ck < sc->n) {
        wx[0] = xk; wy[0] = yk;
        ck = pop_trace_bp_f(sc, ck, &c, &bq, &bt, &len);
        if(c != 2) xk += len;
        if(c != 3) yk += len;
        wx[1] = xk; wy[1] = yk;
    }
    assert(xk == l0);

    // char cm[4], cc[4]; 
    // cm[0] = 'M'; cm[1] = 'S'; cm[2] = 'I'; cm[3] = 'D';
    // cc[0] = 'A'; cc[1] = 'C'; cc[2] = 'G'; cc[3] = 'T';

    ck = xk = yk = 0;
    while (ck < sc->n) {
        wx[0] = xk; wy[0] = yk;
        ck = pop_trace_bp_f(sc, ck, &c, &bq, &bt, &len);
        if(c != 2) xk += len;
        if(c != 3) yk += len;
        wx[1] = xk; wy[1] = yk;

        if(c == 0) {
            memcpy(str0 + wx[0], str1 + wy[0], (wx[1]-wx[0])*sizeof((*str1)));
        } else if(c == 1 || c == 3) {
            for (k = wx[0]; k < wx[1]; k++) str0[k] = s_H[bq]; 
        }
        // fprintf(stderr, "%u%c(%c)(x::[%lu,%ld))(y::[%lu,%ld))\n", len, cm[c], ((c==1)||(c==2))?(cc[bt]):('*'), wx[0], wx[1], wy[0], wy[1]); // s_H
    }

    if(memcmp(str0, real, l0*sizeof((*str0)))) {
        fprintf(stderr, "-0-[M::%s]\tid::%u\n", __func__, id);
        // for (k = 0; k < l0 && str0[k] == real[k]; k++);
        
        // fprintf(stderr, "-0-[M::%s]\tid::%u\tk::%lu\tl0::%lu\tnc::%c\toc::%c\n", __func__, id, k, l0, str0[k], real[k]);
        // exit(1);
    } else {
        // fprintf(stderr, "-1-[M::%s]\tid::%u\n", __func__, id);
    }

}

static void worker_sl_ec(void *data, long i, int tid)
{
    // if(i != 0) return;

	sl_v *p = &(((sl_v*)data)[tid]); uint8_t *oa = NULL; char *na = NULL; uint64_t tqual, wqual, rid = i;
    uint32_t ci = 0, len, xk, yk, wx[2], wy[2], k, Nn, yn = 0, tot_e; uint16_t c, bq, bt; 


    ci = 0; xk = yk = 0; tot_e = 0;
    while (ci < scc.a[i].n) {
        // ci = pop_trace_bp(&scc.a[i], ci, &c, &b, &len);
        ci = pop_trace_bp_f(&scc.a[i], ci, &c, &bq, &bt, &len);
        if(c != 3) yk += len;
        if(c != 0) tot_e += len;
        // fprintf(stderr, "|%u%c(%c)", len, cm[c], ((c==1)||(c==2))?(cc[b]):('*')); // s_H
    }
    if(tot_e == 0) return;///no change

    yn = yk; yk++; kv_resize(char, (*p), yk); p->a[yn] = '\0';
    recover_UC_Read(&p->z, &R_INF, i); ///b->z.length


    // char cm[4], cc[4]; 
    // cm[0] = 'M'; cm[1] = 'S'; cm[2] = 'I'; cm[3] = 'D';
    // cc[0] = 'A'; cc[1] = 'C'; cc[2] = 'G'; cc[3] = 'T';

    ci = 0; xk = yk = 0; Nn = 0;
    while (ci < scc.a[i].n) {
        wx[0] = xk; wy[0] = yk;
        // ci = pop_trace_bp(&scc.a[i], ci, &c, &b, &len);
        ci = pop_trace_bp_f(&scc.a[i], ci, &c, &bq, &bt, &len);
        if(c != 2) xk += len;
        if(c != 3) yk += len;
        wx[1] = xk; wy[1] = yk;
        // if(xk > (uint32_t)p->z.length) fprintf(stderr, "[M::%s] xk::%u, len::%u, c::%u, rid::%ld\n", __func__, xk, (uint32_t)p->z.length, c, i);
        if(c == 0) {
            // memcpy(p->a + wy[0], p->z.seq + wx[0], (wx[1]-wx[0])*sizeof((*(p->a))));
            for (; wx[0] < wx[1]; wx[0]++, wy[0]++) {
                p->a[wy[0]] = p->z.seq[wx[0]];
                if(p->a[wy[0]] == 'N') Nn++;
            }
        } else if(c == 1 || c == 2) {
            for (k = wy[0]; k < wy[1]; k++) {
                p->a[k] = s_H[bt]; 
                if(p->a[k] == 'N') Nn++;
            }
        }

        // if(i == 700) fprintf(stderr, "|%u%c(%c)(x::%u)(y::%u)", len, cm[c], ((c==1)||(c==2))?(cc[b]):('*'), wx[1], wy[1]); // s_H
    }

    // if(i == 700) fprintf(stderr, "|\n");
    if((asm_opt.is_sc) && (rid < R_INF.tqn)) retrive_bqual(&(p->q), NULL, i, -1, -1, 0, sc_bn);


    if (R_INF.read_size[i] < yn) {
		R_INF.read_size[i] = yn;
		REALLOC(R_INF.read_sperate[i], R_INF.read_size[i]/4+1);
        if((asm_opt.is_sc) && (rid < R_INF.tqn)) REALLOC(R_INF.rsc[i], ((R_INF.read_size[i]/sc_bn) + ((R_INF.read_size[i]%sc_bn)?1:0)));
	}
	R_INF.read_length[i] = yn;
    // if(Nn > 0) fprintf(stderr, "[M::%s] Nn->%u\n", __func__, Nn);

    // for (k = 0; k < yn; k++) {
    //     c = seq_nt6_table[(uint8_t)p->a[k]]; 
    //     if (c >= 4) { 
    //         fprintf(stderr, "[M::%s] Nn->%u, yn::%u, xn::%lld, k::%u, str::%c, c::%u, rid::%ld\n", __func__, Nn, yn, p->z.length, k, p->a[k], c, i);
    //     }
    // }


    ///debug
    // resize_UC_Read(&p->z, p->z.length * 2); 
    // dbg_rsc(p->z.seq + p->z.length, p->z.length, p->a, yn, &(scc.a[i]), p->z.seq, i);


	ha_compress_base(Get_READ(R_INF, i), p->a, yn, &R_INF.N_site[i], Nn);
    if((asm_opt.is_sc) && (rid < R_INF.tqn)) {
        oa = p->q.a; na = p->a; 
        ci = 0; xk = yk = 0; Nn = 0;
        while (ci < scc.a[i].n) {
            wx[0] = xk; wy[0] = yk;
            ci = pop_trace_bp_f(&scc.a[i], ci, &c, &bq, &bt, &len);
            if(c != 2) xk += len;
            if(c != 3) yk += len;
            wx[1] = xk; wy[1] = yk;
            if(c == 0 || c == 1) {
                memcpy(na + wy[0], oa + wx[0], (wx[1]-wx[0])*sizeof((*oa)));
            } else if(c == 2) {
                get_wqual(i, wx[0], 0, NULL, oa, sc_wn, &tqual, &wqual);
                for (k = wy[0]; k < wy[1]; k++) na[k] = wqual;
            }
        }
        assert(yk == yn);
        ha_compress_qual_bit(Get_QUAL(R_INF, i), na, yn, sc_bn);
    }
}

dbg_cnt_ss* fetch_dbg_cnt_ss(char *in, int64_t n_a, dbg_cnt_ss *in_p)
{
    FILE *fp = fopen(in, "r");
    if (!fp) {
        fprintf(stderr, "No %s.", in);
        return NULL;
    }

    char buffer[8192], *pch = NULL; int64_t k = 0;
    dbg_cnt_ss *p = in_p; 
    if(!p) MALLOC(p, n_a);

    while (fgets(buffer, sizeof(buffer), fp)) {
        pch = strtok(buffer, "\t");
        while (pch != NULL) {
            if((strlen(pch) >= 6) && (!memcmp(pch, "rid::", 5))) {
                assert(k == atoll(pch+5));
            } else if(strlen(pch) >= 9) {
                if(!memcmp(pch, "tot_bs::", 8)) {
                    p[k].fbs = atoll(pch+8);
                } else if(!memcmp(pch, "aln_bs::", 8)) {
                    p[k].faln = atoll(pch+8);
                } else if(!memcmp(pch, "chn_tm::", 8)) {
                    p[k].chn_tm = atof(pch+8);
                } else if(!memcmp(pch, "aln_tm::", 8)) {
                    p[k].aln_tm = atof(pch+8);
                } else if(!memcmp(pch, "phs_tm::", 8)) {
                    p[k].phs_tm = atof(pch+8);
                } else if(!memcmp(pch, "cns_tm::", 8)) {
                    p[k].cns_tm = atof(pch+8);
                }
            }
            pch = strtok (NULL, "\t");
        }
        k++;
    }
    assert(n_a == k);

    fclose(fp);
    return p;
}

void prt_dbg_stats(dbg_cnt_ss *p, uint64_t n_a, char *fn_n, uint64_t rr, uint8_t stat_only)
{
    uint64_t k; char *ga_n = NULL; FILE *fn = NULL; double chn_tm = 0, aln_tm = 0, phs_tm = 0, cns_tm = 0;
    uint64_t fbs = 0, faln = 0;
    if(!stat_only) {
        ga_n = (char*)malloc(strlen(fn_n)+64);
        sprintf(ga_n, "%s.%lu.run.stat.log", fn_n, rr);
        fn = fopen(ga_n, "w");
        free(ga_n);
    }
    

    for (k = 0; k < n_a; k++) {
        if(!stat_only) {
            if(DBG_TIME == 1) {
                fprintf(fn, "rid::%lu\ttot_bs::%lu\taln_bs::%lu\tchn_tm::%f\taln_tm::%f\tphs_tm::%f\tcns_tm::%f\n", k, p[k].fbs, p[k].faln, p[k].chn_tm, p[k].aln_tm, p[k].phs_tm, p[k].cns_tm);
            } else {
                fprintf(fn, "rid::%lu\ttot_bs::%lu\taln_bs::%lu\n", k, p[k].fbs, p[k].faln);
            }   
            
        }
        chn_tm += p[k].chn_tm; 
        aln_tm += p[k].aln_tm;
        phs_tm += p[k].phs_tm; 
        cns_tm += p[k].cns_tm;
        fbs += p[k].fbs;
        faln += p[k].faln;
    }

    if(!stat_only) {
        fprintf(stderr, "[M::%s] chn_tm::%f, aln_tm:%f, phs_tm:%f, cns_tm:%f, fbs::%lu, faln::%lu\n", __func__, chn_tm, aln_tm, phs_tm, cns_tm, fbs, faln);
        fclose(fn);
        exit(1);
    } else {
        fprintf(stderr, "[M::%s] chn_tm::%f, aln_tm:%f, phs_tm:%f, cns_tm:%f, fbs::%lu, faln::%lu\n", __func__, chn_tm, aln_tm, phs_tm, cns_tm, fbs, faln);
        exit(1);
    }
}


dbg_cmp_ss* init_dbgss(uint64_t n_thre, uint64_t n_a, dbg_cmp_ss *in)
{
    dbg_cmp_ss *p = NULL; uint64_t k;

    if(!in) {
        CALLOC(p, 1);
        p->nrid = n_a; CALLOC(p->ssa, n_a); CALLOC(p->ssb, n_a);
        p->mul_n = n_thre; CALLOC(p->spt_mul, n_thre);
        // p->srt_aa_cut = p->srt_ba_cut = 0;
    } else {
        p = in;
        free(p->ssa); free(p->ssb);
        free(p->srt_aa.a); free(p->srt_ba.a);
        for (k = 0; k < p->mul_n; k++) {
            free(p->spt_mul[k].a);
        }
        free(p->spt_mul); free(p->fthr.a); free(p); 
        p = NULL;
    }

    return p;
}

void prt_dbgss_cmd(asgchr_v *buf_a, uint64_t *a, uint64_t an, uint32_t *tid_a, const char *fn_n)
{
    uint64_t k;
    char* ga_n = (char*)malloc(strlen(fn_n)+64);
    sprintf(ga_n, "%s.cmp.diff.stat.log", fn_n);
    FILE *fn = fopen(ga_n, "w");
    free(ga_n);

    for (k = 0; k < an; k++) {
        if(a[k] == ((uint64_t)-1)) continue;
        // fprintf(stderr, "k::%lu, tid::%u, t_aid::%lu\n", k, tid_a[k], a[k]);
        // fprintf(stderr, "t_aid_n::%lu\n", buf_a[tid_a[k]].n);
        fputs(buf_a[tid_a[k]].a + a[k], fn);
    }

    fclose(fn);
}

void cal_ec_multiple_stat_cmp(ec_ovec_buf_t *b, uint64_t n_thre, uint64_t n_a, char *stat_1, char *stat_2, double ssa_cut, double ssb_cut)
{
    uint64_t k = 0, sp, tot_a, tot_b, tt, tcut, *sa = NULL, sn; uint8_t sf;
    dbgss = init_dbgss(n_thre, n_a, NULL);

    fetch_dbg_cnt_ss(stat_1, n_a, dbgss->ssa);
    fetch_dbg_cnt_ss(stat_2, n_a, dbgss->ssb);

    // prt_dbg_stats(dbg_a, n_a, (char *)"dbg_a", 768);
    // prt_dbg_stats(dbg_b, n_a, (char *)"dbg_b", 768);
    for (k = dbgss->srt_aa.n = dbgss->srt_ba.n = tot_a = tot_b = 0; k < n_a; k++) {
        if(dbgss->ssa[k].fbs >= dbgss->ssb[k].fbs) {
            sp = dbgss->ssa[k].fbs - dbgss->ssb[k].fbs; sf = 1;
            tot_a += sp;
        } else {
            sp = dbgss->ssb[k].fbs - dbgss->ssa[k].fbs; sf = 0;
            tot_b += sp;
        }
        if(sp > UINT32_MAX) sp = UINT32_MAX;
        sp = UINT32_MAX - sp; sp <<= 32; sp |= k;
        if(sf) {
            kv_push(uint64_t, dbgss->srt_aa, sp);
        } else {
            kv_push(uint64_t, dbgss->srt_ba, sp);
        }
    }

    radix_sort_ec64(dbgss->srt_aa.a, dbgss->srt_aa.a + dbgss->srt_aa.n);
    radix_sort_ec64(dbgss->srt_ba.a, dbgss->srt_ba.a + dbgss->srt_ba.n);



    for (k = 0; k < dbgss->mul_n; k++) dbgss->spt_mul[k].n = 0;
    sa = dbgss->srt_aa.a; sn = dbgss->srt_aa.n; tcut = tot_a*ssa_cut;
    for (k = tt = 0; k < sn && tt <= tcut; k++) {
        tt += (UINT32_MAX - (sa[k]>>32));
    }
    dbgss->fa = sa; dbgss->fn = k; kv_resize(uint32_t, dbgss->fthr, dbgss->fn);
    fprintf(stderr, "[M::a>=b] # top->%f diff bases::%lu(# read::%lu); # tot diff bases::%lu; # reads::%lu\n", ssa_cut, tt, k, tot_a, n_a);
    kt_for(n_thre, worker_hap_ec_ss, b, dbgss->fn);///debug_for_fix
    prt_dbgss_cmd(dbgss->spt_mul, sa, k, dbgss->fthr.a, "a_b");


    
    for (k = 0; k < dbgss->mul_n; k++) dbgss->spt_mul[k].n = 0;
    sa = dbgss->srt_ba.a; sn = dbgss->srt_ba.n; tcut = tot_b*ssb_cut;
    for (k = tt = 0; k < sn && tt <= tcut; k++) {
        tt += (UINT32_MAX - (sa[k]>>32));
    }
    dbgss->fa = sa; dbgss->fn = k; kv_resize(uint32_t, dbgss->fthr, dbgss->fn);
    fprintf(stderr, "[M:::a<b] # top->%f diff bases::%lu(# read::%lu); # tot diff bases::%lu; # reads::%lu\n", ssb_cut, tt, k, tot_b, n_a);
    kt_for(n_thre, worker_hap_ec_ss, b, dbgss->fn);///debug_for_fix
    prt_dbgss_cmd(dbgss->spt_mul, sa, k, dbgss->fthr.a, "b_a");



    init_dbgss(n_thre, n_a, dbgss);
    exit(1);
}

static void ff_ihyb_syn_worker_insert(void *data, long i, int tid) /** callback for kt_for()**/
{
    tsrt_v_buf *s = ((tsrt_v_buf*)data);
    asg64_v *za = &(s->idx[i]); int64_t n0;
    uint64_t k, qn, tn, ok, ss; ma_hit_t *fv = NULL, *rv = NULL; ma_hit_t_alloc *rva = NULL; 
    for (k = 0; k < za->n; k++) {
        qn = za->a[k]>>32; ok = ((uint32_t)za->a[k])>>1; ss = za->a[k]&1;
        fv = &(s->pf[qn].buffer[ok]); tn = fv->tn;
        assert((!ss) || (fv->bl == 0x7FFFFFFF));
        // fv->bl = Get_READ_LENGTH(R_INF, tn);
        rva = &(s->pf[tn]);
        if(rva->length >= rva->size) {
            rva->length++;
        } else {
            rv = &(rva->buffer[rva->length++]);
            rv->qns = (uint64_t)-1;
        }
    }	


    for (k = 0; k < za->n; k++) {
        qn = za->a[k]>>32; ok = ((uint32_t)za->a[k])>>1; ss = za->a[k]&1;
        fv = &(s->pf[qn].buffer[ok]); tn = fv->tn;
        assert((!ss) || (fv->bl == 0x7FFFFFFF));
        fv->bl = Get_READ_LENGTH(R_INF, tn);
        rva = &(s->pf[tn]);
        n0 = MIN(rva->length, rva->size);
        if(rva->length > rva->size) {
            rva->size = rva->length;
            REALLOC(rva->buffer, rva->size);
        }

        for (n0--; (n0 >= 0) && (rva->buffer[n0].qns == ((uint64_t)-1)); n0--);
        rva->length = n0 + 1;
        rv = &(rva->buffer[rva->length++]);

        rv->qns = Get_tn(*fv); rv->qns = rv->qns << 32; rv->qns = rv->qns | Get_ts(*fv);
        rv->qe = Get_te(*fv);

        rv->tn = Get_qn(*fv);
        rv->ts = Get_qs(*fv);
        rv->te = Get_qe(*fv);

        rv->rev = fv->rev;
        rv->el = fv->el;

        rv->ml = fv->ml;
        rv->no_l_indel = fv->no_l_indel;
        rv->bl = ((ss)?(0x7FFFFFFF):(Get_READ_LENGTH(R_INF, rv->tn)));
        /**
        if(rv->el) {///HiFi->ONT: this should extend
            ql = Get_READ_LENGTH(R_INF, Get_qn(*rv));
            tl = Get_READ_LENGTH(R_INF, Get_tn(*rv));
            qs = ((uint32_t)(rv->qns)); qe = rv->qe; ts = rv->ts; te = rv->te;
            if(qs >= ql) {qs = ql;} if(qe > ql) {qe = ql;} 
            if(ts >= tl) {ts = tl;} if(te > tl) {te = tl;} 

            if(qs <= ts) {
                ts -= qs; qs = 0;
            } else {
                qs -= ts; ts = 0;
            }

            qr = ql - qe; tr = tl - te;
            if(qr <= tr) {
                qe = ql; te += qr;        
            } else {
                te = tl; qe += tr; 
            }

            rv->qns >>= 32; rv->qns <<= 32; rv->qns |= ((uint64_t)(qs)); rv->qe = qe;
            rv->ts = ts; rv->te = te;
            if((qe <= qs) || (te <= ts)) rva->length--;
        }
        **/
        // if(((rv->qns>>32) == 23863 && rv->tn == 4) || ((rv->qns>>32) == 4 && rv->tn == 23863)) {
        //     fprintf(stderr, "[M::%s]\t%.*s(qid::%u)\tql::%lu\tq::[%u,%u)\t%c\t%.*s(tid::%u)\t\ttl::%lu\tt::[%u,%u)\tel::%u\n", __func__, 
        //     (int32_t)Get_NAME_LENGTH(R_INF, (rv->qns>>32)), Get_NAME(R_INF, (rv->qns>>32)), (uint32_t)(rv->qns>>32), Get_READ_LENGTH(R_INF, (rv->qns>>32)), 
        //     (uint32_t)rv->qns, rv->qe, "+-"[rv->rev], 
        //     (int32_t)Get_NAME_LENGTH(R_INF, rv->tn), Get_NAME(R_INF, rv->tn), rv->tn, Get_READ_LENGTH(R_INF, (rv->tn)),  
        //     rv->ts, rv->te, rv->el?1:0);
        // }
    }
}

static void *ff_ihyb_syn_worker_count(void *data, int step, void *in) 
{
    tsrt_v_m *p = (tsrt_v_m*)data;
    if (step == 0) {
        ma_hit_t_alloc *z = NULL; uint64_t k, qn, tn, m; asg64_v *zi = NULL;
        tsrt_v_buf *s = NULL; CALLOC(s, 1);
        s->p = p->p; s->pm = p->pm; s->pn = p->pn; s->tqn = p->tqn; s->pf = p->pf; CALLOC(s->idx, s->pn);

        while (p->rid < p->tqn) {
            // fprintf(stderr, "\n[M::%s] p->rid::%lu, p->tot::%lu, R_INF.tqn::%lu\n", __func__, p->rid, p->tot, R_INF.tqn);
            z = &(p->pf[p->rid++]);
            // fprintf(stderr, "[M::%s] R_INF.paf[23856].length::%u\n", __func__, R_INF.paf[23856].length);
            // fprintf(stderr, "[M::%s] s->pf[23856].lengthlength::%u\n", __func__, s->pf[23856].length);
            // fprintf(stderr, "[M::%s] z->length::%u\n", __func__, z->length);
            for (k = 0; k < z->length; k++) {
                tn = z->buffer[k].tn;
                if(tn < p->tqn) continue;///no ont-2-ont
                qn = z->buffer[k].qns>>32;
                m = qn<<=32; m |= (k<<1);
                if(z->buffer[k].bl == 0x7FFFFFFF) {
                    m |= 1; p->n_bl++;
                    // z->buffer[k].bl = Get_READ_LENGTH(R_INF, tn);
                }
                zi = &(s->idx[(tn-p->tqn)&s->pm]);
                s->tov_size -= zi->m;
                kv_push(uint64_t, *zi, m); s->tov++;
                s->tov_size += zi->m;
                p->n_ov++;
                // if(((z->buffer[k].qns>>32) == 23863 && z->buffer[k].tn == 4) || ((z->buffer[k].qns>>32) == 4 && z->buffer[k].tn == 23863)) {
                //     fprintf(stderr, "[M::%s]\t%.*s(qid::%u)\tql::%lu\tq::[%u,%u)\t%c\t%.*s(tid::%u)\t\ttl::%lu\tt::[%u,%u)\tel::%u\n", __func__,
                //         (int32_t)Get_NAME_LENGTH(R_INF, (z->buffer[k].qns>>32)), Get_NAME(R_INF, (z->buffer[k].qns>>32)), (uint32_t)(z->buffer[k].qns>>32), Get_READ_LENGTH(R_INF, (z->buffer[k].qns>>32)), 
                //         (uint32_t)z->buffer[k].qns, z->buffer[k].qe, "+-"[z->buffer[k].rev], 
                //         (int32_t)Get_NAME_LENGTH(R_INF, z->buffer[k].tn), Get_NAME(R_INF, z->buffer[k].tn), z->buffer[k].tn, Get_READ_LENGTH(R_INF, (z->buffer[k].tn)),  
                //         z->buffer[k].ts, z->buffer[k].te, z->buffer[k].el?1:0);
                // }
            }
            if(s->tov_size >= p->chunk_size) break;
        }
        if (s->tov == 0) {
            for (k = 0; k < s->pn; k++) {
                free(s->idx[k].a);
            }
            free(s->idx); free(s);
        } else {
            return s;
        }
    } else if (step == 1) {
        tsrt_v_buf *s  = (tsrt_v_buf* )in; uint64_t k;
        kt_for(p->n_thr, ff_ihyb_syn_worker_insert, s, s->pn);
        for (k = 0; k < s->pn; k++) {
            free(s->idx[k].a);
        }
        free(s->idx); free(s);
    }
    
    return 0;
}

void ff_ihyb_syn_tid(ec_ovec_buf_t *b, uint64_t pre, uint64_t n_a, uint64_t n_thre)
{
    tsrt_v_m sp = {0, 0, 0, 0, 0, 0};
    sp.p = pre; sp.pn = ((uint64_t)1) << pre; sp.pm = (((uint64_t)1) << pre) - 1; sp.n_ov = sp.n_bl = 0;
    sp.rid = 0; sp.tot = n_a; sp.chunk_size = 10000000; sp.tqn = R_INF.tqn; sp.n_thr = n_thre;

    sp.pf = R_INF.paf; sp.n_ov = sp.n_bl = 0; sp.rid = 0; 
    kt_pipeline(n_thre, ff_ihyb_syn_worker_count, &sp, 2);
    fprintf(stderr, "[M::%s::cis-paf] # syn overlaps::%lu, # syn informative overlaps::%lu\n", __func__, sp.n_ov, sp.n_bl);


    sp.pf = R_INF.reverse_paf; sp.n_ov = sp.n_bl = 0; sp.rid = 0; 
    kt_pipeline(n_thre, ff_ihyb_syn_worker_count, &sp, 2);
    fprintf(stderr, "[M::%s::trans-paf] # syn overlaps::%lu, # syn informative overlaps::%lu\n", __func__, sp.n_ov, sp.n_bl);

    kt_for(n_thre, worker_hap_ec_hybrid_sync, b, n_a - R_INF.tqn);///HiFi-only

    



    /**
    tsrt_v_buf bsrt_v = {0, 0, 0, NULL};
    bsrt_v.p = pre; bsrt_v.pn = ((uint64_t)1) << pre; bsrt_v.pm = (((uint64_t)1) << pre) - 1;
    CALLOC(bsrt_v.idx, bsrt_v.pn);

    kt_pipeline(3, ff_ihyb_syn_worker_count, &bsrt_v, 2);

    for (k = 0; k < R_INF.tqn; k++) {
        z = &(R_INF.paf[k]);
        for (i = 0; i < z->length; i++) {
            tn = z->buffer[i].tn;
            qn = z->buffer[i].qns>>32;
            m = qn<<=32; m |= (i<<1);
            if(z->buffer[i].bl == 0x7FFFFFFF) {
                m |= 1; 
                z->buffer[i].bl = Get_READ_LENGTH(R_INF, tn);
            }
            zi = &(bsrt_v.idx[(tn-R_INF.tqn)&bsrt_v.pm]);
            kv_push(uint64_t, *zi, m);
        }
    }
    
    for (k = 0; k < bsrt_v.pn; k++) {
        zi = &(bsrt_v.idx[k]);
        radix_sort_ec64(zi->a, zi->a + zi->n);
    }
    



    for (k = 0; k < bsrt_v.pn; k++) free(bsrt_v.idx[k].a);
    free(bsrt_v.idx); bsrt_v = {0, 0, 0, NULL};
    **/
}

void gen_ihyb_syn(ec_ovec_buf_t *b, uint64_t n_thre, uint64_t n_a)
{
    // R_INF.is_syn = 1;
    kt_for(n_thre, worker_hap_ec_hybrid, b, n_a);
    // R_INF.is_syn = 1;

    ff_ihyb_syn_tid(b, 10, n_a, n_thre);
    
}

uint64_t cal_ec_multiple(ec_ovec_buf_t *b, uint64_t n_thre, uint64_t n_a, uint64_t *r_base)
{
    double tt0 = yak_realtime_0();
    uint64_t k, num_base = 0, num_correct = 0; (*r_base) = 0;

    if(!(scc.a)) {
        scc.n = scc.m = n_a; CALLOC(scc.a, n_a); CALLOC(scc.f, n_a);
    }

    if(!(scb.a)) {
        scb.n = scb.m = n_a; CALLOC(scb.a, n_a);
    }

    for (k = 0; k < n_thre; ++k) b->a[k].cnt[0] = b->a[k].cnt[1] = 0;

    // fprintf(stderr, "[M::%s] n_thre->%lu\n", __func__, n_thre);
    if(asm_opt.dbg_run_1 && asm_opt.dbg_run_2) cal_ec_multiple_stat_cmp(b, n_thre, n_a, asm_opt.dbg_run_1, asm_opt.dbg_run_2, 0.1, 0.1);

    R_INF.is_syn = 0;
    if(!(asm_opt.hf)) {
        kt_for(n_thre, worker_hap_ec, b, n_a);///debug_for_fix
        // exit(1);
    } else if(asm_opt.hyb_syn == 1) {///all-to-all 
        kt_for(n_thre, worker_hap_ec_hybrid, b, n_a);///debug_for_fix
    } else {
        R_INF.is_syn = 1;
        gen_ihyb_syn(b, n_thre, n_a);
    }

    for (k = 0; k < n_thre; ++k) {
        num_base += b->a[k].cnt[0];
        num_correct += b->a[k].cnt[1];
    }

    // fprintf(stderr, "\n[M::%s] # reads->%lu\n", __func__, n_a);
    // fprintf(stderr, "[M::%s] # input bases->%lu\n", __func__, num_base);
    // fprintf(stderr, "[M::%s] # corrected bases->%lu\n", __func__, num_correct);
    // fprintf(stderr, "[M::%s::%.3f] running time\n", __func__, yak_realtime_0()-tt0);
    fprintf(stderr, "[M::pec::%.3f] # bases: %lu; # corrected bases: %lu\n", yak_realtime_0()-tt0, num_base, num_correct);

    (*r_base) = num_base;
    return num_correct;
}

uint64_t cal_ec_multiple_step(ec_ovec_buf_t *b, uint64_t n_thre, uint64_t n_a, uint64_t step_n, uint64_t *r_base)
{
    double tt0 = yak_realtime_0();
    uint64_t k, num_base = 0, num_correct = 0, step_w, step_k, step_n_a; (*r_base) = 0;

    if(!(scc.a)) {
        scc.n = scc.m = n_a; CALLOC(scc.a, n_a); CALLOC(scc.f, n_a);
        MALLOC(scc.er, n_a); memset(scc.er, -1, sizeof((*scc.er))*n_a);
    } else {
        kt_for(n_thre, worker_init_ec_step, b, n_a);
    }

    if(!(scb.a)) {
        scb.n = scb.m = n_a; CALLOC(scb.a, n_a);
    }

    for (k = 0; k < n_thre; ++k) b->a[k].cnt[0] = b->a[k].cnt[1] = 0;
    if(asm_opt.dbg_run_1 && asm_opt.dbg_run_2) cal_ec_multiple_stat_cmp(b, n_thre, n_a, asm_opt.dbg_run_1, asm_opt.dbg_run_2, 0.1, 0.1);

    step_w = n_a/step_n; if(step_w < n_thre) step_w = n_thre;

    for (step_k = 0; step_k < n_a; step_k += step_w) {
        scc.bid = step_k; R_INF.is_syn = 0; step_n_a = (((n_a - step_k) < step_w)?(n_a - step_k):(step_w));
        // fprintf(stderr, "\n[M::%s] step_k::%lu, step_w::%lu\n", __func__, step_k, step_w);
        if(!(asm_opt.hf)) {
            kt_for(n_thre, worker_hap_ec_step, b, step_n_a);///debug_for_fix
        } else if(asm_opt.hyb_syn == 1) {///all-to-all 
            kt_for(n_thre, worker_hap_ec_hybrid, b, step_n_a);///debug_for_fix
        } else {
            R_INF.is_syn = 1;
            gen_ihyb_syn(b, n_thre, n_a);
        }
    }

    for (k = 0; k < n_thre; ++k) {
        num_base += b->a[k].cnt[0];
        num_correct += b->a[k].cnt[1];
    }

    // fprintf(stderr, "\n[M::%s] # reads->%lu\n", __func__, n_a);
    // fprintf(stderr, "[M::%s] # input bases->%lu\n", __func__, num_base);
    // fprintf(stderr, "[M::%s] # corrected bases->%lu\n", __func__, num_correct);
    // fprintf(stderr, "[M::%s::%.3f] running time\n", __func__, yak_realtime_0()-tt0);
    fprintf(stderr, "[M::pec::%.3f] # bases: %lu; # corrected bases: %lu\n", yak_realtime_0()-tt0, num_base, num_correct);
    exit(1);

    (*r_base) = num_base;
    return num_correct;
}

void cal_update_ec_multiple(ec_ovec_buf_t *b, uint64_t n_thre, uint64_t n_a)
{
    double tt0 = yak_realtime_0();
    uint64_t k, num_ec_o = 0, num_nec_o = 0; 

    for (k = 0; k < n_thre; ++k) b->a[k].cnt[0] = b->a[k].cnt[1] = 0;

    kt_for(n_thre, worker_update_dc_ec, b, n_a);///debug_for_fix

    for (k = 0; k < n_thre; ++k) {
        num_ec_o += b->a[k].cnt[0]; num_nec_o += b->a[k].cnt[1];
    }

    fprintf(stderr, "[M::pec::%.3f] # exact o: %lu; # non-exact o: %lu\n", yak_realtime_0()-tt0, num_ec_o, num_nec_o);
}


void ha_print_ovlp_stat_1(ec_ovec_buf_t *b, uint64_t n_thre, uint64_t n_a)
{
    double tt0 = yak_realtime_0();
    uint64_t k, forward, reverse, strong, weak, exact, no_l_indel;

    forward = reverse = strong = weak = exact = no_l_indel = 0;

    ///calculate overlaps
    for (k = 0; k < n_thre; ++k) {
        b->a[k].cnt[0] = b->a[k].cnt[1] = b->a[k].cnt[2] = b->a[k].cnt[3] = b->a[k].cnt[4] = b->a[k].cnt[5] = 0;
    }

    kt_for(n_thre, worker_hap_dc_ec_gen, b, n_a);

    for (k = 0; k < n_thre; ++k) {
        forward += b->a[k].cnt[0];
        reverse += b->a[k].cnt[1];
        strong += b->a[k].cnt[2];
        weak += b->a[k].cnt[3];
        exact += b->a[k].cnt[4];
        no_l_indel += b->a[k].cnt[5];
    }

    fprintf(stderr, "[M::%s] # overlaps: %lu\n", __func__, forward);
	fprintf(stderr, "[M::%s] # strong overlaps: %lu\n", __func__, strong);
	fprintf(stderr, "[M::%s] # weak overlaps: %lu\n", __func__, weak);
	fprintf(stderr, "[M::%s] # exact overlaps: %lu\n", __func__, exact); // this seems not right
	fprintf(stderr, "[M::%s] # inexact overlaps: %lu\n", __func__, forward - exact);
	fprintf(stderr, "[M::%s] # overlaps without large indels: %lu\n", __func__, no_l_indel);
	fprintf(stderr, "[M::%s] # reverse overlaps: %lu\n", __func__, reverse);
    fprintf(stderr, "[M::%s] # running time: %.3f\n", __func__, yak_realtime_0()-tt0);

    // fprintf(stderr, "\n[M::%s] # reads->%lu\n", __func__, n_a);
    // fprintf(stderr, "[M::%s] # corrected reads->%lu\n", __func__, rb);
    // fprintf(stderr, "[M::%s] # uncorrected reads->%lu\n", __func__, urb);
    // fprintf(stderr, "[M::%s::%.3f]\n", __func__, yak_realtime_0()-tt0);
}

void ha_print_ovlp_stat_0(ec_ovec_buf_t *b, uint64_t n_thre, uint64_t n_a)
{
    double tt0 = yak_realtime_0();
    uint64_t k, forward, reverse, strong, weak, exact, no_l_indel;

    forward = reverse = strong = weak = exact = no_l_indel = 0;

    ///calculate overlaps
    for (k = 0; k < n_thre; ++k) {
        b->a[k].cnt[0] = b->a[k].cnt[1] = b->a[k].cnt[2] = b->a[k].cnt[3] = b->a[k].cnt[4] = b->a[k].cnt[5] = 0;
    }

    kt_for(n_thre, worker_hap_dc_ec_gen_new_idx, b, n_a);

    for (k = 0; k < n_thre; ++k) {
        forward += b->a[k].cnt[0];
        reverse += b->a[k].cnt[1];
        strong += b->a[k].cnt[2];
        weak += b->a[k].cnt[3];
        exact += b->a[k].cnt[4];
        no_l_indel += b->a[k].cnt[5];
    }

    fprintf(stderr, "[M::%s] # overlaps: %lu\n", __func__, forward);
	fprintf(stderr, "[M::%s] # strong overlaps: %lu\n", __func__, strong);
	fprintf(stderr, "[M::%s] # weak overlaps: %lu\n", __func__, weak);
	fprintf(stderr, "[M::%s] # exact overlaps: %lu\n", __func__, exact); // this seems not right
	fprintf(stderr, "[M::%s] # inexact overlaps: %lu\n", __func__, forward - exact);
	fprintf(stderr, "[M::%s] # overlaps without large indels: %lu\n", __func__, no_l_indel);
	fprintf(stderr, "[M::%s] # reverse overlaps: %lu\n", __func__, reverse);
    fprintf(stderr, "[M::%s] # running time: %.3f\n", __func__, yak_realtime_0()-tt0);

    // fprintf(stderr, "\n[M::%s] # reads->%lu\n", __func__, n_a);
    // fprintf(stderr, "[M::%s] # corrected reads->%lu\n", __func__, rb);
    // fprintf(stderr, "[M::%s] # uncorrected reads->%lu\n", __func__, urb);
    // fprintf(stderr, "[M::%s::%.3f]\n", __func__, yak_realtime_0()-tt0);
}

uint64_t cal_sec_ec_multiple(ec_ovec_buf_t *b, uint64_t n_thre, uint64_t n_a, int64_t round)
{
    double tt0 = yak_realtime_0();
    uint64_t k, num_base, num_correct, rb, urb;
    num_base = num_correct = 0;
    
    ////counting
    rb = urb = 0;
    for (k = 0; k < n_thre; ++k) b->a[k].cnt[0] = b->a[k].cnt[1] = 0;

    kt_for(n_thre, worker_hap_dc_ec, b, n_a);///debug_for_fix
    
    for (k = 0; k < n_thre; ++k) {
        rb += b->a[k].cnt[0]; urb += b->a[k].cnt[1];
    }

    if(round >= 0) {
        if(!(sca.a)) {
            sca.n = sca.m = n_a; CALLOC(sca.a, n_a);
        }
        ////correct
        
        for (k = 0; k < n_thre; ++k) b->a[k].cnt[0] = b->a[k].cnt[1] = 0;
        
        kt_for(n_thre, worker_hap_dc_ec0, b, n_a);///debug_for_fix

        for (k = 0; k < n_thre; ++k) {
            num_base += b->a[k].cnt[0];
            num_correct += b->a[k].cnt[1];
        }

        kt_for(n_thre, update_scb0, b, n_a);
    }

    if(round >= 0) {
        fprintf(stderr, "[M::sec::%.3f] # bases: %lu; # corrected bases: %lu; # reads: %lu; # corrected reads: %lu\n", yak_realtime_0()-tt0, num_base, num_correct, rb, urb);
    } else {
        fprintf(stderr, "[M::sec::%.3f] # reads: %lu; # corrected reads: %lu\n", yak_realtime_0()-tt0, rb, urb);
    }

    // fprintf(stderr, "\n[M::%s] # reads->%lu\n", __func__, n_a);
    // fprintf(stderr, "[M::%s] # corrected reads->%lu\n", __func__, rb);
    // fprintf(stderr, "[M::%s] # uncorrected reads->%lu\n", __func__, urb);
    // if(round >= 0) {
    //     fprintf(stderr, "[M::%s] # input bases->%lu\n", __func__, num_base);
    //     fprintf(stderr, "[M::%s] # corrected bases->%lu\n", __func__, num_correct);
    //     fprintf(stderr, "[M::%s::%.3f] ==> round %ld\n", __func__, yak_realtime_0()-tt0, round);
    // }
    return num_correct;
}


void write_ec_reads(const char *suffix_ou)
{
    uint64_t k, strl; UC_Read qstr, tstr; char *nn = NULL, *str = NULL;
    init_UC_Read(&qstr); init_UC_Read(&tstr);
    MALLOC(nn, strlen(suffix_ou) + strlen(asm_opt.output_file_name) + 36);
    sprintf(nn, "%s.%s", asm_opt.output_file_name, suffix_ou);
    FILE *ou = fopen(nn, "w");
    free(nn);

    for (k = 0; k < R_INF.total_reads; k++) {
        recover_UC_Read(&qstr, &R_INF, k);
        if(scb.a) {
            gen_ori_seq0(qstr.seq, qstr.length, &tstr, &(scb.a[k]), k); str = tstr.seq; strl = tstr.length;
        } else {
            str = qstr.seq; strl = qstr.length;
        }

        fwrite(">", 1, 1, ou);
        fwrite(Get_NAME(R_INF, k), 1, Get_NAME_LENGTH(R_INF, k), ou);
        fwrite("\n", 1, 1, ou);
        fwrite(str, 1, strl, ou);
        fwrite("\n", 1, 1, ou);
    }

    fclose(ou); destory_UC_Read(&qstr); destory_UC_Read(&tstr);
}

dbg_cnt_ss* gen_dbg_cnt_ss(uint64_t n_a)
{
    dbg_cnt_ss *p = NULL; CALLOC(p, n_a);
    return p;
}

void prt_nel_ovlp(ma_hit_t_alloc *pa, uint64_t p_n)
{
    uint64_t k, t; ma_hit_t *z;
    for (k = 0; k < p_n; k++) {
        for (t = 0; t < pa[k].length; t++) {
            z = &(pa[k].buffer[t]);
            fprintf(stderr, "%.*s(qid::%u)\t%c\t%.*s(tid::%u)\tel::%u\n", 
                (int32_t)Get_NAME_LENGTH(R_INF, (z->qns>>32)), Get_NAME(R_INF, (z->qns>>32)), (uint32_t)(z->qns>>32), "+-"[z->rev], (int32_t)Get_NAME_LENGTH(R_INF, z->tn), Get_NAME(R_INF, z->tn), z->tn,
            z->el?1:0);
        }
    }
    exit(1);
}

void cal_ec_r(uint64_t n_thre, uint64_t round, uint64_t n_round, uint64_t n_a, uint64_t is_sv, uint64_t *tot_b, uint64_t *tot_e)
{
    // write_ec_reads("ec0.fa");

    // fprintf(stderr, "[M::%s]\tn_thre::%lu, round::%lu, n_round::%lu, n_a::%lu, is_sv::%lu\n", __func__, n_thre, round, n_round, n_a, is_sv);
    fprintf(stderr, "-0-[M::%s]\t# tqn::%lu, Ont base::%lu, # HiFi bases::%lu\n", __func__, R_INF.tqn, R_INF.tr[0], R_INF.tr[1]);

    ec_ovec_buf_t *b = NULL; uint64_t k, is_cr = (round&1);
    (*tot_b) = (*tot_e) = 0;

    if(DBG_TIME && ((!asm_opt.dbg_run_1) || (!asm_opt.dbg_run_2))) {
        dbg_a = gen_dbg_cnt_ss(n_a);
    }
    b = gen_ec_ovec_buf_t(n_thre);
    if(asm_opt.step_rd > 0) {
        (*tot_e) += cal_ec_multiple_step(b, n_thre, n_a, asm_opt.step_rd, tot_b);
    } else {
        (*tot_e) += cal_ec_multiple(b, n_thre, n_a, tot_b); ///exit(1);
    }
    
    if(DBG_TIME && dbg_a) {
        prt_dbg_stats(dbg_a, n_a, asm_opt.output_file_name, round, 0);
        free(dbg_a); dbg_a = NULL;
    }
    sl_ec_r(n_thre, n_a);

    for (k = 0; k < n_round; k++) {
        (*tot_e) += cal_sec_ec_multiple(b, n_thre, n_a, k);
        sl_ec_r(n_thre, n_a);
    }

    fprintf(stderr, "-1-[M::%s]\t# tqn::%lu, Ont base::%lu, # HiFi bases::%lu\n", __func__, R_INF.tqn, R_INF.tr[0], R_INF.tr[1]);

    cal_update_ec_multiple(b, n_thre, n_a);///update overlaps

    // if(is_sv) kt_for(n_thre, worker_hap_dc_ec, b, n_a);///update overlaps
    fprintf(stderr, "-2-[M::%s]\t# tqn::%lu, Ont base::%lu, # HiFi bases::%lu\n", __func__, R_INF.tqn, R_INF.tr[0], R_INF.tr[1]);

    // prt_nel_ovlp(R_INF.paf, n_a);
    // exit(1);

    if((!is_sv) || (is_sv && is_cr)) {
        kt_for(n_thre, worker_hap_post_rev, b, n_a);
    }

    fprintf(stderr, "-3-[M::%s]\t# tqn::%lu, Ont base::%lu, # HiFi bases::%lu\n", __func__, R_INF.tqn, R_INF.tr[0], R_INF.tr[1]);
    // cal_sec_ec_multiple(b, n_thre, n_a, -1);

    // gen_sec_ec_multiple(b, n_thre, n_a);

    destroy_ec_ovec_buf_t(b);

    fprintf(stderr, "-4-[M::%s]\t# tqn::%lu, Ont base::%lu, # HiFi bases::%lu\n", __func__, R_INF.tqn, R_INF.tr[0], R_INF.tr[1]);

    // write_ec_reads("ec16.fa");

    // uint64_t z;
    // for (z = 0; z < scc.n; z++) {
    //     if(scc.f[z]) continue;
    //     fprintf(stderr, "[M::%s]\tid::%lu::%.*s\n", __func__, z, (int)Get_NAME_LENGTH(R_INF, z), Get_NAME((R_INF), z));
    // }
}

void print_ov_dbg_paf(FILE *fp, char *ref_str, char *ref_id, int32_t ref_id_n, char *qry_str, char *qry_id, int32_t qry_id_n, uint64_t rs, uint64_t re, uint64_t rl, uint64_t qs, uint64_t qe, uint64_t ql, uint64_t rev, bit_extz_t *ez, char *ezh)
{
    uint64_t ci = 0; uint16_t c; uint32_t cl;
    fprintf(fp, "%.*s\t%lu\t%lu\t%lu\t", qry_id_n, qry_id, ql, qs, qe);
    fprintf(fp, "%c\t", "+-"[rev]);
    fprintf(fp, "%.*s\t%lu\t%lu\t%lu\t", ref_id_n, ref_id, rl, rs, re);
    fprintf(fp, "255\tcg:Z:");
    while (ci < ez->cigar.n) {
        ci = pop_trace(&(ez->cigar), ci, &c, &cl);
        fprintf(fp, "%u%c", cl, ezh[c]);
    }
    fprintf(fp, "\n");
}

static void *worker_ov_dbg_pipeline(void *data, int step, void *in) // callback for kt_pipeline()
{
    cal_ec_r_dbg_t *p = (cal_ec_r_dbg_t*)data; char cm[4]; cm[0] = 'M'; cm[1] = 'M'; cm[2] = 'I'; cm[3] = 'D'; 
    // cal_ec_r_dbg_step_t
    if (step == 0) { // step 1: read a block of sequences
        cal_ec_r_dbg_step_t *s; CALLOC(s, 1);
        s->si = p->cn; p->cn += p->chunk_size; 
        if(p->cn > p->n_a) {p->cn = p->n_a;} s->ei = p->cn;
        if(s->si >= s->ei) free(s);
        else return s;
    } else if (step == 1) { // step 2: alignment
        cal_ec_r_dbg_step_t *s = (cal_ec_r_dbg_step_t*)in;
        s->buf = gen_ec_ovec_buf_t(p->n_thread); CALLOC(s->res, p->n_thread);  
        kt_for(p->n_thread, worker_hap_ec_dbg_paf, s, (s->ei - s->si));
        destroy_ec_ovec_buf_t(s->buf);
        return s;
    } else if (step == 2) { // step 3: dump
        cal_ec_r_dbg_step_t *s = (cal_ec_r_dbg_step_t*)in; uint64_t k, z; bit_extz_t ez; memset(&ez, 0, sizeof(ez));
        // UC_Read qu; UC_Read tu; init_UC_Read(&qu); init_UC_Read(&tu); 
        for (k = 0; k < p->n_thread; k++) {
            for (z = 0; z < s->res[k].n; z++) {
                ez.cigar.a = s->res[k].ec.a + s->res[k].a[z].bl; ez.cigar.n = ez.cigar.m = s->res[k].a[z].cc;

                // UC_Read_resize(qu, (s->res[k].a[z].qe - ((uint32_t)s->res[k].a[z].qns))); 
                // recover_UC_Read_sub_region(qu.seq, ((uint32_t)s->res[k].a[z].qns), (s->res[k].a[z].qe - ((uint32_t)s->res[k].a[z].qns)), 0, &R_INF, (s->res[k].a[z].qns>>32));

                // UC_Read_resize(tu, (s->res[k].a[z].te - s->res[k].a[z].ts));
                // recover_UC_Read_sub_region(tu.seq, s->res[k].a[z].ts, s->res[k].a[z].te - s->res[k].a[z].ts, 0, &R_INF, s->res[k].a[z].tn); 

                print_ov_dbg_paf(p->fp, NULL/**qu.seq**/, Get_NAME(R_INF, (s->res[k].a[z].qns>>32)), Get_NAME_LENGTH(R_INF, (s->res[k].a[z].qns>>32)), 
                            NULL/**tu.seq**/, Get_NAME(R_INF, (s->res[k].a[z].tn)), Get_NAME_LENGTH(R_INF, (s->res[k].a[z].tn)), (uint32_t)s->res[k].a[z].qns, s->res[k].a[z].qe, Get_READ_LENGTH(R_INF, (s->res[k].a[z].qns>>32)), s->res[k].a[z].ts, s->res[k].a[z].te, Get_READ_LENGTH(R_INF, (s->res[k].a[z].tn)), s->res[k].a[z].rev, &ez, cm);
            }
            free(s->res[k].a); free(s->res[k].ec.a);
        }
        free(s->res); free(s); ///destory_UC_Read(&qu); destory_UC_Read(&tu);
    }
    return 0;
}

void cal_ec_r_dbg(uint64_t n_thre, uint64_t n_a)
{
    char *paf = NULL; MALLOC(paf, (strlen(asm_opt.output_file_name)+64));
    sprintf(paf, "%s.ovlp.paf", asm_opt.output_file_name); 

    cal_ec_r_dbg_t sl; memset(&sl, 0, sizeof(sl));
    sl.n_thread = n_thre; sl.n_a = n_a; sl.chunk_size = 2000; sl.cn = 0; sl.fp = fopen(paf, "w");

    kt_pipeline(3, worker_ov_dbg_pipeline, &sl, 3);

    fclose(sl.fp); free(paf);
}

void destroy_cc_v(cc_v *z)
{
    uint64_t k;
    for (k = 0; k < z->m; k++) free(z->a[k].a);
    free(z->f); free(z->a);
    z->n = z->m = 0; z->f = NULL; z->a = NULL;
}

void cal_ov_r(uint64_t n_thre, uint64_t n_a, uint64_t new_idx)
{
    ec_ovec_buf_t *b = NULL;
    b = gen_ec_ovec_buf_t(n_thre);
    if(new_idx) {
        // kt_for(n_thre, worker_hap_dc_ec, b, n_a);///update overlaps
        destroy_cc_v(&scc); destroy_cc_v(&scb); destroy_cc_v(&sca);
        
        ha_print_ovlp_stat_0(b, n_thre, n_a);
    } else {
        ha_print_ovlp_stat_1(b, n_thre, n_a);
        destroy_cc_v(&scc); destroy_cc_v(&scb); destroy_cc_v(&sca);
    }

    destroy_ec_ovec_buf_t(b);
}

void sl_ec_r(uint64_t n_thre, uint64_t n_a)
{
    sl_v *b = NULL; uint64_t k; MALLOC(b, n_thre);
    for (k = 0; k < n_thre; k++) {
        b[k].a = NULL; b[k].n = b[k].m = 0;
        init_UC_Read(&b[k].z); kv_init(b[k].q);
    }

    kt_for(n_thre, worker_sl_ec, b, n_a);///debug_for_fix

    for (k = 0; k < n_thre; k++) {
        free(b[k].a); destory_UC_Read(&b[k].z); kv_destroy(b[k].q);
    }
    free(b);
}

void handle_chemical_r(uint64_t n_thre, uint64_t n_a)
{
    ec_ovec_buf_t *b = NULL; uint64_t k, chem_n = 0, dedup = 0;
    b = gen_ec_ovec_buf_t(n_thre);
    for (k = 0; k < n_thre; ++k) {
        b->a[k].cnt[0] = 0; b->a[k].cnt[1] = 0;
    }

    kt_for(n_thre, worker_hap_dc_ec_chemical_r, b, n_a);

    for (k = 0; k < n_thre; ++k) {
        chem_n += b->a[k].cnt[0]; 
        b->a[k].cnt[0] = 0; b->a[k].cnt[1] = 1;
    }

    kt_for(n_thre, worker_hap_dc_ec_chemical_r, b, n_a);
    
    for (k = 0; k < n_thre; ++k) {
        dedup += b->a[k].cnt[0]; 
        b->a[k].cnt[1] = 2;
    }

    kt_for(n_thre, worker_hap_dc_ec_chemical_r, b, n_a);

    fprintf(stderr, "[M::%s] # chimeric reads: %lu, # arcs:: %lu\n", __func__, chem_n, dedup);

    destroy_ec_ovec_buf_t(b);
}

void handle_chemical_arc(uint64_t n_thre, uint64_t n_a)
{
    ec_ovec_buf_t *b = NULL; uint64_t k, chem_n = 0;
    b = gen_ec_ovec_buf_t(n_thre);
    for (k = 0; k < n_thre; ++k) {
        b->a[k].cnt[0] = 0; b->a[k].cnt[1] = 0;
    }

    kt_for(n_thre, worker_hap_dc_ec_chemical_arc, b, n_a);

    for (k = 0; k < n_thre; ++k) {
        chem_n += b->a[k].cnt[0]; 
        b->a[k].cnt[0] = 0; b->a[k].cnt[1] = 1;
    }

    kt_for(n_thre, worker_hap_dc_ec_chemical_arc, b, n_a);

    fprintf(stderr, "[M::%s] # chimeric reads: %lu\n", __func__, chem_n);

    destroy_ec_ovec_buf_t(b);
}

uint8_t* gen_chemical_arc_rf(uint64_t n_thre, uint64_t n_a)
{
    ec_ovec_buf_t *b = NULL; uint64_t k, chem_n = 0; uint8_t *ra = NULL;
    b = gen_ec_ovec_buf_t(n_thre);
    for (k = 0; k < n_thre; ++k) {
        b->a[k].cnt[0] = 0; b->a[k].cnt[1] = 0;
    }
    MALLOC(ra, n_a); ///memset(ra, -1, sizeof((*ra))*n_a); 
    b->cr = ra;

    kt_for(n_thre, worker_hap_dc_ec_chemical_arc_mark, b, n_a);

    for (k = 0; k < n_thre; ++k) {
        chem_n += b->a[k].cnt[0]; 
        b->a[k].cnt[0] = 0; b->a[k].cnt[1] = 1;
    }

    kt_for(n_thre, worker_hap_dc_ec_chemical_arc_mark, b, n_a);

    fprintf(stderr, "[M::%s] # chimeric reads: %lu\n", __func__, chem_n);

    b->cr = NULL; destroy_ec_ovec_buf_t(b);
    return ra;
}


void gen_hc_polish(uint64_t n_thre, ma_ug_t *ug)
{
    ec_polish_buf_t b; memset(&b, 0, sizeof(b)); b.ug = ug;
    uint64_t k, z, zn;
    for (k = b.idx.n = 0; k < ug->u.n; k++) {
        b.idx.n += ug->u.a[k].n;
    }
    MALLOC(b.idx.a, b.idx.n);
    for (k = zn = 0; k < ug->u.n; k++) {
        for (z = 0; z < ug->u.a[k].n; z++, zn++) {
            b.idx.a[zn] = (k<<32)|z;
        }
    }
    b.p = gen_ec_ovec_buf_t(n_thre);

    kt_for(n_thre, worker_ec_polish, &b, b.idx.n);

    destroy_ec_ovec_buf_t(b.p); free(b.idx.a);
}