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assertion was too strong

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This commit is contained in:
Jakob Rath 2023-03-17 23:25:07 +01:00
parent 526a55f116
commit 317fed1062
1 changed files with 5 additions and 1 deletions
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6
src/math/polysat/solver.cpp
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@ -1042,7 +1042,11 @@ namespace polysat {
void solver::revert_bool_decision(sat::literal const lit) {
unsigned max_jump_level = m_bvars.level(lit) - 1;
backjump_and_learn(max_jump_level, true);
SASSERT(m_level < max_jump_level || m_bvars.is_false(lit));
// NOTE: happens in 42448.smt2; but does not seem to be a bug.
// we have a correct lemma but when going through the narrow queue, narrowing causes a conflict.
// thus we exit backjump_and_learn before we have a chance to propagate that lemma.
// so the assertion should hold if !is_conflict.
SASSERT(is_conflict() || m_level < max_jump_level || m_bvars.is_false(lit));
}
std::optional<lemma_score> solver::compute_lemma_score(clause const& lemma) {