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-rw-r--r--src/sat/satoko/solver.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/sat/satoko/solver.h b/src/sat/satoko/solver.h
index 44bbaebd..94035d6e 100644
--- a/src/sat/satoko/solver.h
+++ b/src/sat/satoko/solver.h
@@ -207,6 +207,8 @@ static inline int solver_enqueue(solver_t *s, unsigned lit, unsigned reason)
unsigned var = lit2var(lit);
vec_char_assign(s->assigns, var, lit_polarity(lit));
+ if ( solver_dlevel(s) == 0 )
+ vec_char_assign(s->polarity, var, lit_polarity(lit));
vec_uint_assign(s->levels, var, solver_dlevel(s));
vec_uint_assign(s->reasons, var, reason);
vec_uint_push_back(s->trail, lit);