mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-04-29 11:55:51 +00:00
Code Activity

na

Browse source
This commit is contained in:
Nikolaj Bjorner 2023-12-16 16:10:06 -08:00
parent 5098d5bbfe
commit b1597fd499
14 changed files with 472 additions and 386 deletions
Download patch file Download diff file Expand all files Collapse all files

10
src/sat/smt/polysat_solver.cpp
View file

@ -238,12 +238,14 @@ namespace polysat {
// Core uses the propagate callback to add unit propagations to the trail.
// The polysat::solver takes care of translating signed constraints into expressions, which translate into literals.
// Everything goes over expressions/literals. polysat::core is not responsible for replaying expressions.
dependency solver::propagate(signed_constraint sc, dependency_vector const& deps) {
bool solver::propagate(signed_constraint sc, dependency_vector const& deps) {
sat::literal lit = ctx.mk_literal(constraint2expr(sc));
if (s().value(lit) == l_true)
return false;
auto [core, eqs] = explain_deps(deps);
auto ex = euf::th_explain::propagate(*this, core, eqs, lit, nullptr);
ctx.propagate(lit, ex);
return dependency(lit, s().lvl(lit));
return true;
}
void solver::propagate(dependency const& d, bool sign, dependency_vector const& deps) {
@ -338,7 +340,7 @@ namespace polysat {
}
// walk the egraph starting with pvar for overlaps.
void solver::get_bitvector_prefixes(pvar pv, pvar_vector& out) {
void solver::get_bitvector_suffixes(pvar pv, pvar_vector& out) {
theory_var v = m_pddvar2var[pv];
euf::enode_vector todo;
uint_set seen;
@ -355,7 +357,7 @@ namespace polysat {
// identify prefixes
if (bv.is_concat(sib->get_expr()))
todo.push_back(sib->get_arg(0));
todo.push_back(sib->get_arg(sib->num_args() - 1));
if (w == euf::null_theory_var)
continue;
if (seen.contains(w))