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fix #4187

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This commit is contained in:
Nikolaj Bjorner 2020-05-02 11:42:03 -07:00
parent 47fa6ba7a6
commit f3dd58d7ad
2 changed files with 10 additions and 3 deletions
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6
src/ast/rewriter/rewriter.cpp
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@ -18,6 +18,7 @@ Notes:
--*/
#include "ast/rewriter/rewriter_def.h"
#include "ast/ast_ll_pp.h"
#include "ast/ast_pp.h"
#include "ast/ast_smt2_pp.h"
void rewriter_core::init_cache_stack() {
@ -47,6 +48,9 @@ bool rewriter_core::rewrites_from(expr* t, proof* p) {
}
bool rewriter_core::rewrites_to(expr* t, proof* p) {
CTRACE("rewriter", p && !m().proofs_disabled() && to_app(m().get_fact(p))->get_arg(1) != t,
tout << mk_pp(p, m()) << "\n";
tout << mk_pp(t, m()) << "\n";);
return !p || m().proofs_disabled() || (to_app(m().get_fact(p))->get_arg(1) == t);
}
@ -76,6 +80,8 @@ void rewriter_core::cache_shifted_result(expr * k, unsigned offset, expr * v) {
void rewriter_core::cache_result(expr * k, expr * v, proof * pr) {
m_cache->insert(k, v);
SASSERT(m_proof_gen);
SASSERT(rewrites_from(k, pr));
SASSERT(rewrites_to(v, pr));
m_cache_pr->insert(k, pr);
}