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fix non-termination bug with retained clauses

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-10-25 15:40:11 -07:00
parent 32711790e8
commit ac0202630e
6 changed files with 36 additions and 77 deletions
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17
src/sat/sat_elim_vars.cpp
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@ -302,17 +302,16 @@ namespace sat{
}
bdd elim_vars::make_clauses(clause_use_list & occs) {
bdd result = m.mk_true();
clause_use_list::iterator it = occs.mk_iterator();
while (!it.at_end()) {
bdd result = m.mk_true();
for (auto it = occs.mk_iterator(); !it.at_end(); it.next()) {
clause const& c = it.curr();
if (c.is_blocked()) continue;
bdd cl = m.mk_false();
for (literal l : c) {
cl |= mk_literal(l);
if (!c.is_blocked()) {
bdd cl = m.mk_false();
for (literal l : c) {
cl |= mk_literal(l);
}
result &= cl;
}
it.next();
result &= cl;
}
return result;
}