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This commit is contained in:
Nikolaj Bjorner 2023-12-12 14:41:31 -08:00
parent 4cadf6d9f2
commit 06ebf9a02a
6 changed files with 272 additions and 107 deletions
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26
src/sat/smt/polysat_solver.cpp
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@ -256,6 +256,32 @@ namespace polysat {
void solver::add_polysat_clause(char const* name, core_vector cs, bool is_redundant) {
sat::literal_vector lits;
signed_constraint sc;
unsigned constraint_count = 0;
for (auto e : cs) {
if (std::holds_alternative<signed_constraint>(e)) {
sc = *std::get_if<signed_constraint>(&e);
constraint_count++;
}
}
if (constraint_count == 1) {
auto lit = ctx.mk_literal(constraint2expr(sc));
svector<euf::enode_pair> eqs;
for (auto e : cs) {
if (std::holds_alternative<dependency>(e)) {
auto d = *std::get_if<dependency>(&e);
if (d.is_literal())
lits.push_back(d.literal());
else if (d.is_eq()) {
auto [v1, v2] = d.eq();
eqs.push_back({ var2enode(v1), var2enode(v2) });
}
}
}
ctx.propagate(lit, euf::th_explain::propagate(*this, lits, eqs, lit, nullptr));
return;
}
for (auto e : cs) {
if (std::holds_alternative<dependency>(e)) {
auto d = *std::get_if<dependency>(&e);