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fix 3838 fix #3837

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-04-08 05:49:24 -07:00
parent 7595371721
commit 40aa2f7cb2
4 changed files with 31 additions and 19 deletions
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6
src/ast/rewriter/rewriter_def.h
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@ -184,6 +184,7 @@ bool rewriter_tpl<Config>::visit(expr * t, unsigned max_depth) {
if (to_app(t)->get_num_args() == 0) {
if (process_const<ProofGen>(to_app(t)))
return true;
TRACE("rewriter", tout << "process const: " << mk_bounded_pp(t, m()) << " -> " << mk_bounded_pp(m_r,m()) << "\n";);
t = m_r;
}
if (max_depth != RW_UNBOUNDED_DEPTH)
@ -302,6 +303,7 @@ void rewriter_tpl<Config>::process_app(app * t, frame & fr) {
if (m_pr2) tout << mk_bounded_pp(m_pr2, m()) << "\n";
);
SASSERT(st == BR_FAILED || rewrites_to(m_r, m_pr2));
SASSERT(st == BR_FAILED || rewrites_from(new_t, m_pr2));
SASSERT(st != BR_DONE || m().get_sort(m_r) == m().get_sort(t));
if (st != BR_FAILED) {
result_stack().shrink(fr.m_spos);
@ -314,6 +316,8 @@ void rewriter_tpl<Config>::process_app(app * t, frame & fr) {
m_pr = m().mk_transitivity(m_pr, m_pr2);
m_pr2 = nullptr;
result_pr_stack().push_back(m_pr);
SASSERT(rewrites_to(m_r, m_pr));
SASSERT(rewrites_from(t, m_pr));
}
if (st == BR_DONE) {
cache_result<ProofGen>(t, m_r, m_pr, fr.m_cache_result);
@ -346,6 +350,8 @@ void rewriter_tpl<Config>::process_app(app * t, frame & fr) {
result_pr_stack().push_back(m_pr);
}
m_r = result_stack().back();
SASSERT(rewrites_to(m_r, m_pr));
SASSERT(rewrites_from(t, m_pr));
result_stack().pop_back();
result_stack().pop_back();
result_stack().push_back(m_r);