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disable xor detection

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2026-06-14 15:25:17 -07:00
parent 3a390dda18
commit a8271648bd
1 changed files with 2 additions and 2 deletions
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4
src/ast/rewriter/seq_rewriter.cpp
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@ -3337,11 +3337,11 @@ expr_ref seq_rewriter::mk_regex_union_normalize(expr* r1, expr* r2) {
else if (re().is_dot_plus(r2) && re().get_info(r1).min_length > 0)
result = r2;
// (R1 \ R2) U (R2 \ R1) = R1 xor R2
else if (re().is_intersection(r1, a1, a2) && re().is_intersection(r2, b1, b2) &&
else if (false && re().is_intersection(r1, a1, a2) && re().is_intersection(r2, b1, b2) &&
is_complement(a1, b2) && is_complement(a2, b1)) {
result = re().mk_xor(a1, re().mk_complement(a2));
}
else if (re().is_intersection(r1, a1, a2) && re().is_intersection(r2, b1, b2) &&
else if (false && re().is_intersection(r1, a1, a2) && re().is_intersection(r2, b1, b2) &&
is_complement(a1, b1) && is_complement(a2, b2)) {
result = re().mk_xor(a1, re().mk_complement(a2));
}