[gnugo-devel] Assertion Failure in Gnugo

[Low Yucheng]

Hi,

I am working with Gnugo for a research project, when I met the following 
problem:

My code connects to gnugo through pipes and communicate via gtp.
I am basically issuing the following commands:

clear_board
play [a move]
showboard
initial_influence black white_influence
initial_influence black black_influence
initial_influence black white_strength
initial_influence black black_strength
initial_influence black territory_value
play [the next move].
showboard
initial_influence black white_influence
initial_influence black black_influence
initial_influence black white_strength
initial_influence black black_strength
initial_influence black territory_value

and repeat playing moves until the game is over.
Then I clear the board and continue repeat with the next game.

This assertion failure then occurred with one of the games.


----------------------------------------------------

***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 . X X . X O O O X . . . . . . . . . . 19
18 O O . X O O . X O O . O X . O . . O . 18
17 X X X X O . X X X X O . X . . O . . O 17
16 X . X O O O O . X + X X X O O + O O X 16
15 X X O . O X O X . X O X X X X X X X X 15
14 O X O . X X O . X O O O X O . . . . . 14
13 O O O O . X . O O O . X O . X X . . . 13
12 . . X . X . . X . O X X O O X O X X . 12
11 . . . X . . . . . . O X X O O O O O O 11     WHITE (O) has captured 9 stones
10 . X O X . . . O O X X . . . . + . X . 10     BLACK (X) has captured 12 stones
 9 . . X . . . . . . O O . X . . . . . . 9
 8 . . O . . . . . . . . . X O . O . . . 8
 7 . . . . . . . . . . . . O . O X X . . 7
 6 . X X . X . . . . . . . . . X O . X . 6
 5 . . O . . . . . . . . . . . . . O X . 5
 4 . . . O . . . . . + . . . . . + O O . 4
 3 . . . . . O . . . . . . . . X . X . . 3
 2 . . . . . . . . . . . . . . . . . . . 2
 1 . . . . . . . . . . . . . . . . . . . 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[qq];W[dp];B[cc];W[pc];B[qe];W[pi];B[mc];W[od];B[jc];W[qd];B[cn];W[fq]
;B[di];W[dd];B[dc];W[ed];B[be];W[ec];B[gc];W[gd];B[hc];W[dg];B[fg];W[cf]
;B[ef];W[ce];B[bf];W[bg];B[cd];W[af];B[ad];W[ee];B[ch];W[cg];B[pe];W[rd]
;B[eh];W[gf];B[ff];W[eb];B[db];W[ge];B[hh];W[jf];B[oh];W[ph];B[ne];W[cj]
;B[dj];W[cl];B[bj];W[nd];B[md];W[jd];B[id];W[ie];B[kd];W[ke];B[je];W[bb]
;B[bc];W[jd];B[fe];W[fd];B[je];W[da];B[ca];W[jd];B[le];W[kc];B[je];W[ab]
;B[ea];W[jd];B[ld];W[fa];B[ac];W[da];B[ba];W[jb];B[je];W[ag];B[ae];W[jd]
;B[ic];W[lb];B[je];W[kf];B[mb];W[ha];B[oe];W[jd];B[ia];W[ki];B[ck];W[ob]
;B[lg];W[ib];B[hb];W[ga];B[je];W[jh];B[mi];W[pl];B[re];W[jd];B[ea];W[fb]
;B[je];W[qo];B[oq];W[jd];B[rh];W[ri];B[je];W[oi];B[if];W[jd];B[sd];W[sc]
;B[je];W[ig];B[he];W[hg];B[en];W[co];B[bn];W[hj];B[mk];W[kk];B[rj];W[si]
;B[qm];W[nl];B[ml];W[pn];B[ro];W[mh];B[lh];W[nh];B[li];W[lf];B[mf];W[mg]
;B[se];W[rb];B[og];W[ni];B[qh];W[qi];B[pg];W[nf];B[me];W[rp];B[kh];W[jg]
;B[kj];W[jk];B[rn];W[qp];B[pm];W[om];B[on];W[mm];B[jj];W[ij]
)
gnugo 3.6 (seed 2133831908): You stepped on a bug.
Please mail this message, including the debug output above, to address@hidden

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Yucheng