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unsat core validity check works only if m_conflict.m_dep.is_null()

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This commit is contained in:
Jakob Rath 2023-03-23 14:15:17 +01:00
parent df82d9b0f9
commit 73b97f3a32
2 changed files with 17 additions and 3 deletions
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6
src/math/polysat/conflict.cpp
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@ -194,7 +194,7 @@ namespace polysat {
unsigned conflict::effective_level() const {
SASSERT(!empty());
// If m_dep is set, the corresponding constraint was asserted at m_level and is not valid earlier.
if (m_dep != null_dependency)
if (!m_dep.is_null())
return m_level;
// In other cases, m_level just tracks the level at which the conflict appeared.
// Find the minimal level at which the conflict is still valid.
@ -211,7 +211,7 @@ namespace polysat {
bool conflict::is_valid() const {
SASSERT(!empty());
// If m_dep is set, the corresponding constraint was asserted at m_level and is not valid earlier.
if (m_dep != null_dependency)
if (!m_dep.is_null())
return m_level <= s.m_level;
// All conflict constraints must be bool-assigned.
for (unsigned lit_idx : m_literals)
@ -657,6 +657,8 @@ namespace polysat {
std::ostream& conflict::display(std::ostream& out) const {
out << "lvl " << m_level;
if (!m_dep.is_null())
out << "dep " << m_dep;
char const* sep = " ";
for (auto c : *this)
out << sep << c->bvar2string() << " " << c, sep = " ; ";