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fix #3791

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-04-06 18:37:39 -07:00
parent ba820223ce
commit 9c6722bea8
3 changed files with 3 additions and 9 deletions
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2
src/muz/base/dl_util.cpp
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@ -348,7 +348,7 @@ namespace datalog {
void resolve_rule(rule_manager& rm, rule const& r1, rule const& r2, unsigned idx,
expr_ref_vector const& s1, expr_ref_vector const& s2, rule& res) {
if (!r1.get_proof()) {
if (!r1.get_proof() || !r2.get_proof()) {
return;
}
SASSERT(r2.get_proof());