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#5753

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get_antecedent has to be well-founded. It got broken when using eval during propagation and egraph explain during conflict resolution.
This commit is contained in:
Nikolaj Bjorner 2022-01-15 09:35:25 -08:00
parent d09abdf58e
commit 74824ac901
10 changed files with 53 additions and 4547 deletions
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6
src/sat/smt/euf_solver.cpp
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@ -243,11 +243,11 @@ namespace euf {
m_egraph.explain_eq<size_t>(m_explain, a, b);
}
void solver::add_diseq_antecedent(enode* a, enode* b) {
sat::bool_var v = get_egraph().explain_diseq(m_explain, a, b);
void solver::add_diseq_antecedent(ptr_vector<size_t>& ex, enode* a, enode* b) {
sat::bool_var v = get_egraph().explain_diseq(ex, a, b);
SASSERT(v == sat::null_bool_var || s().value(v) == l_false);
if (v != sat::null_bool_var)
m_explain.push_back(to_ptr(sat::literal(v, true)));
ex.push_back(to_ptr(sat::literal(v, true)));
}
bool solver::propagate(enode* a, enode* b, ext_justification_idx idx) {