[gnugo-devel] GNU Go's bug?

[荒木伸夫]

Hello. I'm a student using GNU Go for my research.
Today, I might encounter GNU Go's bug. When I used GTP mode as follows:
play black Q3
initial_influence black white_influence
initial_influence black black_influence
initial_influence black white_strength
initial_influence black black_strength
play white Q16
initial_influence white white_influence
initial_influence white black_influence
initial_influence white white_strength
initial_influence white black_strength
play black R14
(and so on...)
GNU Go stopped showing the following message.
***assertion failure:
move_reasons.c:336 - next_lunch < 2*19*19/3 near PASS***


   A B C D E F G H J K L M N O P Q R S T
19 . . . . . . O . O . O X X X . X . O . 19
18 . . . . . . X O X O . O X O X X X . . 18
17 . X X . . X . X X O O O O O O O X X . 17
16 . O O X . . X . X O O O X X O O O O . 16
15 . X O . . . X X O O . X X . X X O O O 15
14 O O O . O O X . X O O X O X X X X O X 14
13 O . O O X X . X X O . O O O O . O X . 13
12 X O . . O X X . X O . O . O X X X X . 12
11 . X O O O O . O X O . O O X O . O X . 11     WHITE (O) has captured 27 stones
10 O X X X O O O O X X O O X X . O O X . 10     BLACK (X) has captured 25 stones
 9 X . . . X O X O X O X X O X . O X . . 9
 8 X . X X X X X O X O X O O X . O X . . 8
 7 X X X . . . X O X O X O O O O X X X . 7
 6 X O O . . O X X O O X X O . O . . O . 6
 5 O . O . O . O X . O O X X O . O X X . 5
 4 . O . O O O X X X X O X X X X O O . . 4
 3 . . O . O X O O O X O O X X . X O . . 3
 2 . O X X X X X X O O . O . . X . X O . 2
 1 . . . . . X . X X X O . . . . . . . . 1
   A B C D E F G H J K L M N O P Q R S T
(;GM[1]FF[4]SZ[19]KM[0.0]GN[GNU Go 3.6 stepped on a bug]
;B[pq];W[pd];B[qf];W[nc];B[dd];W[dp];B[fq];W[cn];B[dr];W[po];B[qm];W[on]
;B[np];W[pl];B[ql];W[pk];B[qk];W[pj];B[ri];W[qi];B[rh];W[lq];B[lp];W[kp]
;B[lo];W[oq];B[op];W[pp];B[or];W[qq];B[nq];W[gq];B[gr];W[fr];B[er];W[fp]
;B[fs];W[hq];B[qr];W[cf];B[fc];W[di];B[lc];W[qe];B[pf];W[ne];B[le];W[jc]
;B[id];W[lb];B[mb];W[jd];B[kb];W[ie];B[qc];W[pc];B[qb];W[rf];B[rg];W[rd]
;B[pa];W[ng];B[oh];W[nh];B[ni];W[oi];B[ph];W[qj];B[rj];W[mi];B[nj];W[mk]
;B[he];W[hd];B[ic];W[jb];B[ib];W[ia];B[gd];W[jf];B[if];W[je];B[pe];W[qd]
;B[mj];W[lj];B[nk];W[ml];B[mh];W[li];B[nf];W[mf];B[of];W[mg];B[me];W[nb]
;B[na];W[mc];B[la];W[ld];B[md];W[kd];B[nd];W[kc];B[rc];W[lb];B[nl];W[nm]
;B[lc];W[ka];B[pb];W[od];B[ja];W[lb];B[ha];W[ka];B[ig];W[ra];B[lk];W[ll]
;B[kk];W[hf];B[ge];W[rn];B[sf];W[re];B[lf];W[lg];B[kg];W[jg];B[kh];W[lh]
;B[ki];W[kj];B[jj];W[jk];B[kl];W[ji];B[mm];W[lm];B[km];W[mn];B[ln];W[mm]
;B[ij];W[kf];B[oe];W[se];B[gp];W[eq];B[fo];W[fr];B[ob];W[oc];B[fq];W[ep]
;B[hr];W[fr];B[pm];W[om];B[fq];W[go];B[hp];W[iq];B[ip];W[fr];B[kb];W[lc]
;B[fq];W[ir];B[jp];W[fr];B[ih];W[jh];B[fq];W[kq];B[fr];W[ko];B[kn];W[jo]
;B[hn];W[cq];B[cr];W[in];B[gn];W[hl];B[im];W[hm];B[fl];W[jm];B[il];W[jl]
;B[ik];W[jn];B[mq];W[hj];B[ii];W[hk];B[hg];W[fn];B[gm];W[eo];B[ho];W[fk]
;B[el];W[dk];B[ek];W[ej];B[gk];W[fj];B[gl];W[hi];B[gh];W[gj];B[dl];W[ck]
;B[cl];W[br];B[hs];W[bl];B[bm];W[bk];B[cm];W[bn];B[jq];W[og];B[rm];W[qg]
;B[ma];W[ka];B[an];W[ao];B[kb];W[jr];B[kr];W[ka];B[am];W[bp];B[kb];W[lr]
;B[js];W[ka];B[ch];W[dg];B[kb];W[ks];B[is];W[ka];B[be];W[bf];B[kb];W[mp]
;B[mo];W[ka];B[bo];W[co];B[kb];W[no];B[mp];W[ka];B[dh];W[eh];B[eg];W[ef]
;B[fg];W[ia];B[ei];W[fi];B[bg];W[ag];B[bi];W[ci];B[fh];W[ei];B[bj];W[bh]
;B[ah];W[af];B[ak];W[aj];B[cj];W[cg];B[dj];W[bh];B[al];W[hb];B[hc];W[ga]
;B[gb];W[cd];B[cc];W[ff];B[gf];W[ce];B[bc];W[bd];B[qo];W[qp];B[ro];W[rr]
;B[qh]
)
gnugo 3.6 (seed 1191555464): You stepped on a bug.
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