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fix #3843

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-04-08 11:08:45 -07:00
parent 40aa2f7cb2
commit 6e8d9001dc
4 changed files with 14 additions and 10 deletions
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4
src/ast/rewriter/rewriter.cpp
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@ -43,11 +43,11 @@ void rewriter_core::del_cache_stack() {
}
bool rewriter_core::rewrites_from(expr* t, proof* p) {
return !p || (to_app(m().get_fact(p))->get_arg(0) == t);
return !p || m().proofs_disabled() || (to_app(m().get_fact(p))->get_arg(0) == t);
}
bool rewriter_core::rewrites_to(expr* t, proof* p) {
return !p || (to_app(m().get_fact(p))->get_arg(1) == t);
return !p || m().proofs_disabled() || (to_app(m().get_fact(p))->get_arg(1) == t);
}