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fix mbqi value caching issue raised by Clemens and Martin

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This commit is contained in:
Nikolaj Bjorner 2023-01-15 22:47:34 -05:00
parent d5fde2e578
commit dde5218b29
2 changed files with 32 additions and 28 deletions
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17
src/smt/smt_model_checker.cpp
View file

@ -82,22 +82,18 @@ namespace smt {
app* fresh_term;
if (is_app(val) && to_app(val)->get_num_args() > 0) {
ptr_buffer<expr> args;
for (expr* arg : *to_app(val)) {
for (expr* arg : *to_app(val))
args.push_back(get_type_compatible_term(arg));
}
fresh_term = m.mk_app(to_app(val)->get_decl(), args.size(), args.data());
}
else {
expr * sk_term = get_term_from_ctx(val);
if (sk_term != nullptr) {
if (sk_term != nullptr)
return sk_term;
}
for (expr* f : m_fresh_exprs) {
if (f->get_sort() == val->get_sort()) {
for (expr* f : m_fresh_exprs)
if (f->get_sort() == val->get_sort())
return f;
}
}
fresh_term = m.mk_fresh_const("sk", val->get_sort());
}
m_fresh_exprs.push_back(fresh_term);
@ -106,13 +102,16 @@ namespace smt {
}
void model_checker::init_value2expr() {
if (m_value2expr.empty()) {
// populate m_value2expr
for (auto const& kv : *m_root2value) {
enode * n = kv.m_key;
expr * val = kv.m_value;
n = n->get_eq_enode_with_min_gen();
m_value2expr.insert(val, n->get_expr());
expr* e = n->get_expr();
if (!m.is_value(e))
m_value2expr.insert(val, e);
}
}
}

43
src/smt/smt_model_generator.cpp
View file

@ -330,27 +330,32 @@ namespace smt {
enode * n = curr.get_enode();
SASSERT(n->get_root() == n);
TRACE("mg_top_sort", tout << curr << "\n";);
dependencies.reset();
dependency_values.reset();
model_value_proc * proc = root2proc[n];
SASSERT(proc);
proc->get_dependencies(dependencies);
for (model_value_dependency const& d : dependencies) {
if (d.is_fresh_value()) {
CTRACE("mg_top_sort", !d.get_value()->get_value(),
tout << "#" << n->get_owner_id() << " " << mk_pp(n->get_expr(), m) << " -> " << d << "\n";);
SASSERT(d.get_value()->get_value());
dependency_values.push_back(d.get_value()->get_value());
}
else {
enode * child = d.get_enode();
TRACE("mg_top_sort", tout << "#" << n->get_owner_id() << " (" << mk_pp(n->get_expr(), m) << "): "
<< mk_pp(child->get_expr(), m) << " " << mk_pp(child->get_root()->get_expr(), m) << "\n";);
child = child->get_root();
dependency_values.push_back(m_root2value[child]);
app* val = nullptr;
if (m.is_value(n->get_expr()))
val = to_app(n->get_expr());
else {
dependencies.reset();
dependency_values.reset();
model_value_proc * proc = root2proc[n];
SASSERT(proc);
proc->get_dependencies(dependencies);
for (model_value_dependency const& d : dependencies) {
if (d.is_fresh_value()) {
CTRACE("mg_top_sort", !d.get_value()->get_value(),
tout << "#" << n->get_owner_id() << " " << mk_pp(n->get_expr(), m) << " -> " << d << "\n";);
SASSERT(d.get_value()->get_value());
dependency_values.push_back(d.get_value()->get_value());
}
else {
enode * child = d.get_enode();
TRACE("mg_top_sort", tout << "#" << n->get_owner_id() << " (" << mk_pp(n->get_expr(), m) << "): "
<< mk_pp(child->get_expr(), m) << " " << mk_pp(child->get_root()->get_expr(), m) << "\n";);
child = child->get_root();
dependency_values.push_back(m_root2value[child]);
}
}
val = proc->mk_value(*this, dependency_values);
}
app * val = proc->mk_value(*this, dependency_values);
register_value(val);
m_asts.push_back(val);
m_root2value.insert(n, val);