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track instantiations from MBQI in proof logging for new solver

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2022-09-01 08:51:53 -07:00
parent d3e6ba9f98
commit ac5b190a72
4 changed files with 69 additions and 19 deletions
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54
src/sat/smt/q_mbi.cpp
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@ -68,11 +68,21 @@ namespace q {
}
}
m_max_cex += ctx.get_config().m_mbqi_max_cexs;
for (auto const& [qlit, fml, generation] : m_instantiations) {
for (auto const& [qlit, fml, inst, generation] : m_instantiations) {
euf::solver::scoped_generation sg(ctx, generation + 1);
sat::literal lit = ctx.mk_literal(fml);
euf::th_proof_hint* ph = nullptr;
if (!inst.empty()) {
ph = q_proof_hint::mk(ctx, inst.size(), inst.data());
sat::literal_vector lits;
lits.push_back(~qlit);
lits.push_back(~lit);
m_qs.add_clause(lits, ph);
}
else {
m_qs.add_clause(~qlit, ~lit);
}
m_qs.log_instantiation(~qlit, ~lit);
m_qs.add_clause(~qlit, ~lit);
}
m_instantiations.reset();
if (result != l_true)
@ -224,10 +234,31 @@ namespace q {
TRACE("q", tout << "project: " << proj << "\n";);
IF_VERBOSE(11, verbose_stream() << "mbi:\n" << mk_pp(q, m) << "\n" << proj << "\n");
++m_stats.m_num_instantiations;
unsigned generation = ctx.get_max_generation(proj);
m_instantiations.push_back(instantiation_t(qlit, proj, generation));
unsigned generation = ctx.get_max_generation(proj);
expr_ref_vector inst = extract_binding(q);
m_instantiations.push_back(instantiation_t(qlit, proj, inst, generation));
}
expr_ref_vector mbqi::extract_binding(quantifier* q) {
if (!m_defs.empty()) {
expr_safe_replace sub(m);
for (unsigned i = m_defs.size(); i-- > 0; ) {
sub(m_defs[i].term);
sub.insert(m_defs[i].var, m_defs[i].term);
}
q_body* qb = q2body(q);
expr_ref_vector inst(m);
for (expr* v : qb->vars) {
expr_ref t(m);
sub(v, t);
inst.push_back(t);
}
return inst;
}
return expr_ref_vector(m);
}
void mbqi::add_universe_restriction(q_body& qb) {
for (app* v : qb.vars) {
sort* s = v->get_sort();
@ -284,6 +315,7 @@ namespace q {
expr_ref_vector fmls(qb.vbody);
app_ref_vector vars(qb.vars);
bool fmls_extracted = false;
m_defs.reset();
TRACE("q",
tout << "Project\n";
tout << fmls << "\n";
@ -314,16 +346,22 @@ namespace q {
fmls_extracted = true;
}
if (!p)
continue;
if (!(*p)(*m_model, vars, fmls))
return expr_ref(nullptr, m);
continue;
if (ctx.use_drat()) {
if (!p->project(*m_model, vars, fmls, m_defs))
return expr_ref(m);
}
else if (!(*p)(*m_model, vars, fmls))
return expr_ref(m);
}
for (app* v : vars) {
expr_ref term(m);
expr_ref val = (*m_model)(v);
val = m_model->unfold_as_array(val);
term = replace_model_value(val);
rep.insert(v, term);
rep.insert(v, term);
if (ctx.use_drat())
m_defs.push_back(mbp::def(expr_ref(v, m), term));
eqs.push_back(m.mk_eq(v, val));
}
rep(fmls);