mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-04-30 04:15:51 +00:00
Code Activity

wip - proof checking

Browse source 
fixes to smt_theory_checker. Generalize it to apply to arrays and fpa.
Missing: bv
This commit is contained in:
Nikolaj Bjorner 2022-10-18 09:02:50 -07:00
parent 7b3a634b8d
commit 1fc77c8c00
5 changed files with 35 additions and 29 deletions
Download patch file Download diff file Expand all files Collapse all files

19
src/sat/smt/euf_proof_checker.cpp
View file

@ -214,6 +214,7 @@ namespace euf {
void register_plugins(theory_checker& pc) override {
pc.register_plugin(symbol("euf"), this);
pc.register_plugin(symbol("smt"), this);
}
};
@ -289,13 +290,11 @@ namespace euf {
add_plugin(alloc(res_checker, m, *this));
add_plugin(alloc(q::theory_checker, m));
add_plugin(alloc(distinct::theory_checker, m));
add_plugin(alloc(smt_theory_checker_plugin, m, symbol("datatype"))); // no-op datatype proof checker
add_plugin(alloc(smt_theory_checker_plugin, m));
add_plugin(alloc(tseitin::theory_checker, m));
}
theory_checker::~theory_checker() {
for (auto& [k, v] : m_checked_clauses)
dealloc(v);
}
void theory_checker::add_plugin(theory_checker_plugin* p) {
@ -310,20 +309,14 @@ namespace euf {
bool theory_checker::check(expr* e) {
if (!e || !is_app(e))
return false;
if (m_checked_clauses.contains(e))
return true;
app* a = to_app(e);
theory_checker_plugin* p = nullptr;
return m_map.find(a->get_decl()->get_name(), p) && p->check(a);
}
expr_ref_vector theory_checker::clause(expr* e) {
expr_ref_vector* rr;
if (m_checked_clauses.find(e, rr))
return *rr;
SASSERT(is_app(e) && m_map.contains(to_app(e)->get_name()));
expr_ref_vector r = m_map[to_app(e)->get_name()]->clause(to_app(e));
m_checked_clauses.insert(e, alloc(expr_ref_vector, r));
return r;
}
@ -365,12 +358,16 @@ namespace euf {
expr_ref_vector smt_theory_checker_plugin::clause(app* jst) {
expr_ref_vector result(m);
SASSERT(jst->get_name() == m_rule);
for (expr* arg : *jst)
result.push_back(mk_not(m, arg));
return result;
}
void smt_theory_checker_plugin::register_plugins(theory_checker& pc) {
pc.register_plugin(symbol("datatype"), this);
pc.register_plugin(symbol("array"), this);
pc.register_plugin(symbol("fpa"), this);
}
smt_proof_checker::smt_proof_checker(ast_manager& m, params_ref const& p):
m(m),
@ -469,6 +466,7 @@ namespace euf {
lbool is_sat = m_solver->check_sat();
if (is_sat != l_false) {
std::cout << "did not verify: " << is_sat << " " << clause << "\n";
std::cout << "vc:\n" << vc << "\n";
if (proof_hint)
std::cout << "hint: " << mk_bounded_pp(proof_hint, m, 4) << "\n";
m_solver->display(std::cout);
@ -486,6 +484,7 @@ namespace euf {
for (expr* arg : clause)
std::cout << "\n " << mk_bounded_pp(arg, m);
std::cout << ")\n";
if (is_rup(proof_hint))
diagnose_rup_failure(clause);