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resume conflict

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This commit is contained in:
Jakob Rath 2023-03-17 14:35:15 +01:00
parent cdd2dbcc41
commit 89aaf4b1a6
1 changed files with 5 additions and 0 deletions
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5
src/math/polysat/solver.cpp
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@ -1516,9 +1516,14 @@ namespace polysat {
void solver::report_unsat() { void solver::report_unsat() {
// NOTE: backjump may destroy dependencies of the conflict (e.g., lose boolean propagations). // NOTE: backjump may destroy dependencies of the conflict (e.g., lose boolean propagations).
// so we reset the conflict, backjump, then propagate to restore the conflicts // so we reset the conflict, backjump, then propagate to restore the conflicts
clause_ref confl = m_conflict.build_lemma();
LOG("confl: " << show_deref(confl));
m_conflict.reset(); m_conflict.reset();
backjump(base_level()); backjump(base_level());
propagate_clause(*confl);
propagate(); propagate();
if (!is_conflict())
add_clause(confl);
VERIFY(!m_conflict.empty()); VERIFY(!m_conflict.empty());
} }