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forbidden intervals fixes

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This commit is contained in:
Jakob Rath 2021-09-14 10:15:10 +02:00
parent 43fef8e8ba
commit d36a658139
3 changed files with 14 additions and 5 deletions
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8
src/math/polysat/clause_builder.cpp
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@ -51,6 +51,7 @@ namespace polysat {
void clause_builder::push(signed_constraint c) {
SASSERT(c);
SASSERT(c->has_bvar());
SASSERT(!c.is_always_true()); // clause would be a tautology
if (c->unit_clause()) {
add_dependency(c->unit_dep());
m_level = std::max(m_level, c->unit_clause()->level());
@ -59,4 +60,11 @@ namespace polysat {
m_literals.push_back(c.blit());
}
void clause_builder::push_new(signed_constraint c) {
if (c.is_always_false()) // filter out trivial constraints such as "4 < 2" (may come in from forbidden intervals)
return;
if (!c->has_bvar())
m_solver->m_constraints.ensure_bvar(c.get());
push(c);
}
}