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disable unsound mk_seq_butlast

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2022-02-21 18:56:49 -08:00
parent ea0876b6d6
commit 11030fc81d
1 changed files with 1 additions and 1 deletions
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2
src/ast/rewriter/seq_rewriter.cpp
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@ -943,7 +943,7 @@ expr_ref seq_rewriter::mk_seq_butlast(expr* t) {
expr_ref result(m());
expr* s, * j, * k;
rational v;
if (str().is_extract(t, s, j, k) && m_autil.is_numeral(j, v) && v.is_zero()) {
if (false && str().is_extract(t, s, j, k) && m_autil.is_numeral(j, v) && v.is_zero()) {
expr_ref_vector k_min_1(m());
k_min_1.push_back(k);
k_min_1.push_back(minus_one());