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check for non-nullness when handling optional info fields for marking. Fixes issue #719

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-08-23 11:33:40 -03:00
parent 879f792125
commit 0a09d5ff52
2 changed files with 19 additions and 6 deletions
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9
src/muz/transforms/dl_mk_coi_filter.cpp
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@ -44,6 +44,9 @@ namespace datalog {
if (m_context.has_facts(r->get_decl(i))) {
return 0;
}
if (false && r->is_neg_tail(i)) {
return 0;
}
if (r->is_neg_tail(i)) {
if (!engine.get_fact(r->get_decl(i)).is_reachable()) {
if (!new_tail) {
@ -53,11 +56,13 @@ namespace datalog {
}
new_tail = true;
}
} else if (new_tail) {
}
else if (new_tail) {
m_new_tail.push_back(r->get_tail(i));
m_new_tail_neg.push_back(true);
}
} else {
}
else {
SASSERT(!new_tail);
if (!engine.get_fact(r->get_decl(i)).is_reachable()) {
contained = false;