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fix #4572

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-07-08 11:58:44 -07:00
parent 061abd153c
commit ab7b8b6ec5
1 changed files with 5 additions and 7 deletions
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12
src/smt/theory_bv.cpp
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@ -1443,11 +1443,9 @@ namespace smt {
return; // conflict was detected return; // conflict was detected
} }
m_prop_queue.reset(); m_prop_queue.reset();
literal_vector & bits1 = m_bits[v1]; SASSERT(m_bits[v1].size() == m_bits[v2].size());
literal_vector & bits2 = m_bits[v2]; unsigned sz = m_bits[v1].size();
SASSERT(bits1.size() == bits2.size()); bool changed = true;
unsigned sz = bits1.size();
bool changed;
TRACE("bv", tout << "bits size: " << sz << "\n";); TRACE("bv", tout << "bits size: " << sz << "\n";);
do { do {
// This outerloop is necessary to avoid missing propagation steps. // This outerloop is necessary to avoid missing propagation steps.
@ -1465,8 +1463,8 @@ namespace smt {
// then it is not notified to the bv theory. // then it is not notified to the bv theory.
changed = false; changed = false;
for (unsigned idx = 0; idx < sz; idx++) { for (unsigned idx = 0; idx < sz; idx++) {
literal bit1 = bits1[idx]; literal bit1 = m_bits[v1][idx];
literal bit2 = bits2[idx]; literal bit2 = m_bits[v2][idx];
CTRACE("bv_bug", bit1 == ~bit2, display_var(tout, v1); display_var(tout, v2); tout << "idx: " << idx << "\n";); CTRACE("bv_bug", bit1 == ~bit2, display_var(tout, v1); display_var(tout, v2); tout << "idx: " << idx << "\n";);
SASSERT(bit1 != ~bit2); SASSERT(bit1 != ~bit2);
lbool val1 = ctx.get_assignment(bit1); lbool val1 = ctx.get_assignment(bit1);