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Remove is_nullable_rec from seq_rewriter, delegate to derive::nullable

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copilot-swe-agent[bot] 2026-06-10 18:53:55 +00:00 • committed by GitHub
parent 4cd4d16868
commit b6a29b800b
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4 changed files with 7 additions and 100 deletions
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src/ast/rewriter/seq_derive.cpp
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@ -519,8 +519,7 @@ namespace seq {
m_br.mk_not(is_nullable(r1), result);
}
else if (re().is_to_re(r, r1)) {
SASSERT(u().is_seq(r1->get_sort()));
result = m.mk_eq(u().str.mk_empty(r1->get_sort()), r1);
result = is_nullable(r1);
}
else if (m.is_ite(r, cond, r1, r2)) {
m_br.mk_ite(cond, is_nullable(r1), is_nullable(r2), result);