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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2023-12-12 15:42:39 -08:00
parent 40e93d7478
commit 35eb95b447
7 changed files with 35 additions and 8 deletions
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20
src/sat/smt/euf_solver.cpp
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@ -291,6 +291,26 @@ namespace euf {
}
}
void solver::get_eq_antecedents(enode* a, enode* b, literal_vector& r) {
m_egraph.begin_explain();
m_explain.reset();
m_egraph.explain_eq<size_t>(m_explain, nullptr, a, b);
for (unsigned qhead = 0; qhead < m_explain.size(); ++qhead) {
size_t* e = m_explain[qhead];
if (is_literal(e))
r.push_back(get_literal(e));
else {
size_t idx = get_justification(e);
auto* ext = sat::constraint_base::to_extension(idx);
SASSERT(ext != this);
sat::literal lit = sat::null_literal;
ext->get_antecedents(lit, idx, r, true);
}
}
m_egraph.end_explain();
}
void solver::get_th_antecedents(literal l, th_explain& jst, literal_vector& r, bool probing) {
for (auto lit : euf::th_explain::lits(jst))
r.push_back(lit);