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fix #3504

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-03-25 02:30:51 -07:00
parent 0609408fd7
commit ea396a008a
3 changed files with 15 additions and 6 deletions
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4
src/ast/rewriter/rewriter_def.h
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@ -683,20 +683,20 @@ void rewriter_tpl<Config>::update_binding_at(unsigned i, expr* binding) {
template<typename Config>
template<bool ProofGen>
void rewriter_tpl<Config>::main_loop(expr * t, expr_ref & result, proof_ref & result_pr) {
result_pr = nullptr;
if (m().canceled()) {
if (m_cancel_check) {
reset();
throw rewriter_exception(m().limit().get_cancel_msg());
}
result = t;
result_pr = nullptr;
return;
}
SASSERT(!ProofGen || result_stack().size() == result_pr_stack().size());
SASSERT(not_rewriting());
m_root = t;
m_num_qvars = 0;
m_num_steps = 0;
m_num_steps = 0;
if (visit<ProofGen>(t, RW_UNBOUNDED_DEPTH)) {
result = result_stack().back();
result_stack().pop_back();