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fix quantifier elimination bugs reported by Berdine and Bornat

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2014-07-14 15:38:22 +02:00
parent 4f7d872d59
commit e4dedbbefc
5 changed files with 137 additions and 60 deletions
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2
src/tactic/arith/bv2int_rewriter.cpp
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@ -218,6 +218,7 @@ br_status bv2int_rewriter::mk_mod(expr * s, expr * t, expr_ref & result) {
if (is_bv2int(s, s1) && is_bv2int(t, t1)) {
align_sizes(s1, t1, false);
result = m_bv.mk_bv2int(m_bv.mk_bv_urem(s1, t1));
TRACE("bv2int_rewriter", tout << mk_pp(result,m()) << "\n";);
return BR_DONE;
}
@ -232,6 +233,7 @@ br_status bv2int_rewriter::mk_mod(expr * s, expr * t, expr_ref & result) {
u1 = mk_bv_add(s1, u1, false);
align_sizes(u1, t1, false);
result = m_bv.mk_bv2int(m_bv.mk_bv_urem(u1, t1));
TRACE("bv2int_rewriter", tout << mk_pp(result,m()) << "\n";);
return BR_DONE;
}