mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-04-08 18:31:49 +00:00
Code Activity

extract array terms for evaluator

Browse source 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-04-12 09:41:50 -07:00
parent 2033719c14
commit aa7b5d80fe
1 changed files with 33 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

40
src/model/model_evaluator.cpp
View file

@ -118,8 +118,8 @@ struct evaluator_cfg : public default_rewriter_cfg {
expr * val = m_model.get_const_interp(f);
if (val != 0) {
result = val;
expand_value(result);
return BR_DONE;
// return m().is_value(val)?BR_DONE:BR_REWRITE_FULL;
}
if (m_model_completion) {
@ -188,6 +188,21 @@ struct evaluator_cfg : public default_rewriter_cfg {
return st;
}
void expand_value(expr_ref& val) {
vector<expr_ref_vector> stores;
expr_ref else_case(m());
if (m_ar.is_array(val) && extract_array_func_interp(val, stores, else_case)) {
sort* srt = m().get_sort(val);
val = m_ar.mk_const_array(srt, else_case);
for (unsigned i = stores.size(); i > 0; ) {
--i;
expr_ref_vector args(m());
args.push_back(val);
args.append(stores[i].size(), stores[i].c_ptr());
val = m_ar.mk_store(args.size(), args.c_ptr());
}
}
}
bool get_macro(func_decl * f, expr * & def, quantifier * & q, proof * & def_pr) {
@ -306,6 +321,21 @@ struct evaluator_cfg : public default_rewriter_cfg {
TRACE("model_evaluator", tout << "non-ground else case " << mk_pp(a, m()) << "\n" << mk_pp(else_case, m()) << "\n";);
return false;
}
bool is_value = true;
for (unsigned i = stores.size(); is_value && i > 0; ) {
--i;
if (else_case == stores[i].back()) {
for (unsigned j = i + 1; j < stores.size(); ++j) {
stores[j-1].reset();
stores[j-1].append(stores[j]);
}
stores.pop_back();
continue;
}
for (unsigned j = 0; is_value && j + 1 < stores[i].size(); ++j) {
is_value = m().is_value(stores[i][j].get());
}
}
TRACE("model_evaluator", tout << "else case: " << mk_pp(else_case, m()) << "\n";);
return true;
}
@ -358,14 +388,10 @@ unsigned model_evaluator::get_num_steps() const {
return m_imp->get_num_steps();
}
void model_evaluator::cleanup(params_ref const & p) {
model_core & md = m_imp->cfg().m_model;
#pragma omp critical (model_evaluator)
{
dealloc(m_imp);
m_imp = alloc(imp, md, p);
}
dealloc(m_imp);
m_imp = alloc(imp, md, p);
}
void model_evaluator::reset(params_ref const & p) {