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fix issue #535

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-03-24 08:16:19 -07:00
parent 96f113afee
commit 05a784fa9e
3 changed files with 18 additions and 7 deletions
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12
src/ast/rewriter/arith_rewriter.cpp
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@ -638,9 +638,13 @@ br_status arith_rewriter::mk_div_core(expr * arg1, expr * arg2, expr_ref & resul
set_curr_sort(m().get_sort(arg1));
numeral v1, v2;
bool is_int;
if (m_util.is_numeral(arg2, v2, is_int) && !v2.is_zero()) {
if (m_util.is_numeral(arg2, v2, is_int)) {
SASSERT(!is_int);
if (m_util.is_numeral(arg1, v1, is_int)) {
if (v2.is_zero()) {
result = m_util.mk_div0(arg1);
return BR_REWRITE1;
}
else if (m_util.is_numeral(arg1, v1, is_int)) {
result = m_util.mk_numeral(v1/v2, false);
return BR_DONE;
}
@ -691,6 +695,10 @@ br_status arith_rewriter::mk_idiv_core(expr * arg1, expr * arg2, expr_ref & resu
result = m_util.mk_numeral(div(v1, v2), is_int);
return BR_DONE;
}
if (m_util.is_numeral(arg2, v2, is_int) & v2.is_zero()) {
result = m_util.mk_idiv0(arg1);
return BR_REWRITE1;
}
return BR_FAILED;
}