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fix #4890

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2020-12-12 12:20:53 -08:00
parent 89a6c7a349
commit 89fb55a864
2 changed files with 10 additions and 7 deletions
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14
src/tactic/arith/eq2bv_tactic.cpp
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@ -278,14 +278,11 @@ public:
void cleanup_fd(ref<bvmc>& mc) {
SASSERT(m_fd.empty());
ptr_vector<expr> rm;
for (auto& kv : m_max) {
if (m_nonfd.is_marked(kv.m_key)) {
for (auto& kv : m_max)
if (m_nonfd.is_marked(kv.m_key))
rm.push_back(kv.m_key);
}
}
for (unsigned i = 0; i < rm.size(); ++i) {
m_max.erase(rm[i]);
}
for (expr* r : rm)
m_max.erase(r);
for (auto& kv : m_max) {
// ensure there are enough elements.
bool strict;
@ -305,6 +302,7 @@ public:
if (p <= 1) p = 2;
if (kv.m_value == p) p *= 2;
unsigned n = log2(p);
SASSERT(p >= kv.m_value);
app* z = m.mk_fresh_const("z", bv.mk_sort(n));
m_trail.push_back(z);
m_fd.insert(kv.m_key, z);
@ -391,6 +389,8 @@ public:
rational r;
if (is_uninterp_const(v) && a.is_numeral(c, r) && !m_nonfd.is_marked(v) && a.is_int(v) && r.is_unsigned()) {
val = r.get_unsigned();
if (val > UINT_MAX/4)
return false;
add_fd(v, val);
return true;
}