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fix #4156

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This commit is contained in:
Nikolaj Bjorner 2020-04-28 13:47:26 -07:00
parent fa88dabd10
commit 815feddd1a
1 changed files with 8 additions and 2 deletions
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10
src/ast/rewriter/seq_rewriter.cpp
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@ -457,8 +457,14 @@ br_status seq_rewriter::mk_app_core(func_decl * f, unsigned num_args, expr * con
st = mk_re_range(args[0], args[1], result);
break;
case OP_RE_INTERSECT:
SASSERT(num_args == 2);
st = mk_re_inter(args[0], args[1], result);
if (num_args == 1) {
result = args[0];
st = BR_DONE;
}
else {
SASSERT(num_args == 2);
st = mk_re_inter(args[0], args[1], result);
}
break;
case OP_RE_COMPLEMENT:
SASSERT(num_args == 1);