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(mev) call expand_value only at the end

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There is no need to expand array values throughout evaluation.
They are expanded during array equality checking (if requested), and
can be expanded at the very end of evaluation (if needed).
This commit is contained in:
Arie Gurfinkel 2017-06-20 23:39:38 -04:00
parent d5ca902bf6
commit 493a3a6312
1 changed files with 6 additions and 6 deletions
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12
src/model/model_evaluator.cpp
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@ -125,7 +125,6 @@ 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;
}
@ -274,7 +273,6 @@ struct evaluator_cfg : public default_rewriter_cfg {
return BR_FAILED;
}
// disabled until made more efficient
vector<expr_ref_vector> stores1, stores2;
bool args_are_unique1, args_are_unique2;
expr_ref else1(m()), else2(m());
@ -489,6 +487,10 @@ struct model_evaluator::imp : public rewriter_tpl<evaluator_cfg> {
m_cfg(md.get_manager(), md, p) {
set_cancel_check(false);
}
void expand_value (expr_ref &val) {
m_cfg.expand_value (val);
}
};
model_evaluator::model_evaluator(model_core & md, params_ref const & p) {
@ -537,14 +539,12 @@ void model_evaluator::reset(params_ref const & p) {
void model_evaluator::operator()(expr * t, expr_ref & result) {
TRACE("model_evaluator", tout << mk_ismt2_pp(t, m()) << "\n";);
m_imp->operator()(t, result);
m_imp->expand_value(result);
}
expr_ref model_evaluator::operator()(expr * t) {
TRACE("model_evaluator", tout << mk_ismt2_pp(t, m()) << "\n";);
expr_ref result(m());
m_imp->operator()(t, result);
this->operator()(t, result);
return result;
}