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fix to #717. The bottom-up COI filter can only use positive facts for filtering

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-08-23 12:26:38 -03:00
parent b5c521e4b2
commit 510231df42
2 changed files with 5 additions and 6 deletions
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6
src/muz/dataflow/dataflow.h
View file

@ -72,7 +72,7 @@ namespace datalog {
}
e->get_data().m_value->push_back(cur);
}
if (cur->get_uninterpreted_tail_size() == 0) {
if (cur->get_positive_tail_size() == 0) {
func_decl *sym = cur->get_head()->get_decl();
bool new_info = m_facts.insert_if_not_there2(sym, Fact())->get_data().m_value.init_up(m_context, cur);
if (new_info) {
@ -97,7 +97,7 @@ namespace datalog {
}
void step_bottom_up() {
for(todo_set::iterator I = m_todo[m_todo_idx].begin(),
for(todo_set::iterator I = m_todo[m_todo_idx].begin(),
E = m_todo[m_todo_idx].end(); I!=E; ++I) {
ptr_vector<rule> * rules;
if (!m_body2rules.find(*I, rules))
@ -236,7 +236,7 @@ namespace datalog {
return m_facts.get(m_rule->get_decl(idx), Fact::null_fact);
}
unsigned size() const {
return m_rule->get_uninterpreted_tail_size();
return m_rule->get_positive_tail_size();
}
};

5
src/muz/transforms/dl_mk_coi_filter.cpp
View file

@ -44,9 +44,7 @@ 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) {
@ -62,6 +60,7 @@ namespace datalog {
m_new_tail_neg.push_back(true);
}
}
else {
SASSERT(!new_tail);
if (!engine.get_fact(r->get_decl(i)).is_reachable()) {