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Bugfix for bv*div0 model construction.

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This commit is contained in:
Christoph M. Wintersteiger 2016-02-05 13:53:35 +00:00
parent 88f007e9da
commit bb5118acbb
4 changed files with 27 additions and 6 deletions
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6
src/ast/rewriter/bv_rewriter.cpp
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@ -694,7 +694,7 @@ br_status bv_rewriter::mk_bv_sdiv_core(expr * arg1, expr * arg2, bool hi_div0, e
if (r2.is_zero()) {
if (!hi_div0) {
result = m().mk_app(get_fid(), OP_BSDIV0, arg1);
return BR_DONE;
return BR_REWRITE1;
}
else {
// The "hardware interpretation" for (bvsdiv x 0) is (ite (bvslt x #x0000) #x0001 #xffff)
@ -745,7 +745,7 @@ br_status bv_rewriter::mk_bv_udiv_core(expr * arg1, expr * arg2, bool hi_div0, e
if (r2.is_zero()) {
if (!hi_div0) {
result = m().mk_app(get_fid(), OP_BUDIV0, arg1);
return BR_DONE;
return BR_REWRITE1;
}
else {
// The "hardware interpretation" for (bvudiv x 0) is #xffff
@ -808,7 +808,7 @@ br_status bv_rewriter::mk_bv_srem_core(expr * arg1, expr * arg2, bool hi_div0, e
if (r2.is_zero()) {
if (!hi_div0) {
result = m().mk_app(get_fid(), OP_BSREM0, arg1);
return BR_DONE;
return BR_REWRITE1;
}
else {
// The "hardware interpretation" for (bvsrem x 0) is x