mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-06-29 17:38:45 +00:00
Code Activity

fix proof generation for unit resolution. Issue #691

Browse source 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-07-20 11:54:39 -07:00
parent 6559fd817d
commit 5f39c4371c
3 changed files with 10 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

9
src/smt/smt_internalizer.cpp
View file

@ -1045,15 +1045,13 @@ namespace smt {
bool context::simplify_aux_clause_literals(unsigned & num_lits, literal * lits, literal_buffer & simp_lits) {
std::sort(lits, lits + num_lits);
literal prev = null_literal;
unsigned i = 0;
unsigned j = 0;
for (; i < num_lits; i++) {
for (unsigned i = 0; i < num_lits; i++) {
literal curr = lits[i];
lbool val = get_assignment(curr);
if (val == l_false)
simp_lits.push_back(~curr);
switch(val) {
case l_false:
simp_lits.push_back(~curr);
break; // ignore literal
case l_undef:
if (curr == ~prev)
@ -1295,8 +1293,9 @@ namespace smt {
SASSERT(get_assignment(simp_lits[i]) == l_true);
}
});
if (old_num_lits != num_lits)
if (!simp_lits.empty()) {
j = mk_justification(unit_resolution_justification(m_region, j, simp_lits.size(), simp_lits.c_ptr()));
}
break;
}
case CLS_AUX_LEMMA: {