mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-04-29 20:05:51 +00:00
Code Activity

Add support for bailout lemma

Browse source
This commit is contained in:
Jakob Rath 2021-09-08 16:37:47 +02:00
parent f2c79b851f
commit a0570908fb
5 changed files with 28 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

16
src/math/polysat/conflict_core.cpp
View file

@ -149,10 +149,10 @@ namespace polysat {
clause_builder c_lemma(*m_solver);
for (auto premise : premises) {
handle_saturation_premises(premise);
c_lemma.push_literal(~premise.blit());
c_lemma.push(~premise.blit());
active_level = std::max(active_level, m_solver->m_bvars.level(premise.blit()));
}
c_lemma.push_literal(c.blit());
c_lemma.push(c.blit());
clause* cl = cm().store(c_lemma.build());
if (cl->size() == 1)
c->set_unit_clause(cl);
@ -180,10 +180,10 @@ namespace polysat {
pvar v = item.var();
auto c = ~cm().eq(0, m_solver->var(v) - m_solver->m_value[v]);
cm().ensure_bvar(c.get());
lemma.push_literal(c.blit());
lemma.push(c.blit());
} else {
sat::literal lit = item.lit();
lemma.push_literal(~lit);
lemma.push(~lit);
}
--todo;
}
@ -228,10 +228,12 @@ namespace polysat {
}
clause_builder conflict_core::build_lemma(unsigned reverted_level) {
if (is_bailout())
return build_fallback_lemma(reverted_level);
else
if (!is_bailout())
return build_core_lemma(reverted_level);
else if (m_bailout_lemma)
return *std::move(m_bailout_lemma);
else
return build_fallback_lemma(reverted_level);
}
bool conflict_core::resolve_value(pvar v, vector<signed_constraint> const& cjust_v) {