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wip - adding proof checkers, fixes to quantifier proof certificates

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This commit is contained in:
Nikolaj Bjorner 2022-10-10 09:46:22 +02:00
parent 4623117af8
commit de69874076
16 changed files with 241 additions and 58 deletions
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22
src/sat/smt/q_proof_checker.cpp
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@ -25,27 +25,33 @@ namespace q {
expr_ref_vector result(m);
for (expr* arg : *jst)
if (!is_bind(arg))
result.push_back(arg);
result.push_back(mk_not(m, arg));
return result;
}
expr_ref_vector proof_checker::binding(app* jst) {
expr_ref_vector result(m);
for (expr* arg : *jst)
if (is_bind(arg))
result.push_back(to_app(arg)->get_arg(0));
if (is_bind(arg)) {
result.append(to_app(arg)->get_num_args(), to_app(arg)->get_args());
break;
}
return result;
}
void proof_checker::vc(app* jst, expr_ref_vector& clause) {
bool proof_checker::vc(app* jst, expr_ref_vector const& clause0, expr_ref_vector& v) {
expr* q = nullptr;
if (!is_inst(jst))
return;
SASSERT(clause.size() >= 2);
VERIFY(m.is_not(clause.get(0), q) && is_forall(q));
return false;
auto clause1 = clause(jst);
SASSERT(clause1.size() >= 2);
VERIFY(m.is_not(clause1.get(0), q) && is_forall(q));
auto inst = binding(jst);
expr_ref qi = instantiate(m, to_quantifier(q), inst.begin());
clause[0] = m.mk_not(qi);
clause1[0] = m.mk_not(qi);
v.reset();
v.append(clause1);
return qi == clause1.get(1);
}
bool proof_checker::is_inst(expr* jst) {