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fixes #1171

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-07-27 08:46:20 -07:00
parent d3e1d250a7
commit 6558999cef
5 changed files with 11 additions and 13 deletions
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10
src/qe/qe_arith.cpp
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@ -90,8 +90,8 @@ namespace qe {
rational r1, r2;
expr_ref val1 = eval(e1);
expr_ref val2 = eval(e2);
VERIFY(a.is_numeral(val1, r1));
VERIFY(a.is_numeral(val2, r2));
if (!a.is_numeral(val1, r1)) return false;
if (!a.is_numeral(val2, r2)) return false;
SASSERT(r1 != r2);
if (r1 < r2) {
std::swap(e1, e2);
@ -107,7 +107,7 @@ namespace qe {
vector<std::pair<expr*,rational> > nums;
for (unsigned i = 0; i < alit->get_num_args(); ++i) {
val = eval(alit->get_arg(i));
VERIFY(a.is_numeral(val, r));
if (!a.is_numeral(val, r)) return false;
nums.push_back(std::make_pair(alit->get_arg(i), r));
}
std::sort(nums.begin(), nums.end(), compare_second());
@ -129,7 +129,7 @@ namespace qe {
expr* arg1 = to_app(lit)->get_arg(i), *arg2 = 0;
rational r;
expr_ref val = eval(arg1);
VERIFY(a.is_numeral(val, r));
if (!a.is_numeral(val, r)) return false;
if (values.find(r, arg2)) {
ty = opt::t_eq;
linearize(mbo, eval, mul, arg1, c, fmls, ts, tids);
@ -196,7 +196,7 @@ namespace qe {
linearize(mbo, eval, mul, t3, c, fmls, ts, tids);
}
}
else if (a.is_mod(t, t1, t2) && is_numeral(t2, mul1)) {
else if (a.is_mod(t, t1, t2) && is_numeral(t2, mul1) && !mul1.is_zero()) {
rational r;
val = eval(t);
VERIFY(a.is_numeral(val, r));