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disable filtering on negated tails. Issue #634

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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Nikolaj Bjorner 2016-06-04 20:08:13 -07:00
parent e9e926d4d6
commit e8d85f91d7
1 changed files with 1 additions and 1 deletions
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2
src/muz/transforms/dl_mk_filter_rules.cpp
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@ -111,7 +111,7 @@ namespace datalog {
bool rule_modified = false;
for (unsigned i = 0; i < sz; i++) {
app * tail = r->get_tail(i);
if (is_candidate(tail)) {
if (is_candidate(tail) && !r->is_neg_tail(i)) {
TRACE("mk_filter_rules", tout << "is_candidate: " << mk_pp(tail, m) << "\n";);
var_idx_set non_local_vars = rm.collect_rule_vars_ex(r, tail);
func_decl * filter_decl = mk_filter_decl(tail, non_local_vars);