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sigma of full_seq was missing

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CEisenhofer 2026-06-09 15:49:41 +02:00
parent 069068ce5e
commit 64f422abc5
1 changed files with 6 additions and 0 deletions
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6
src/smt/seq/seq_nielsen.cpp
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@ -3690,6 +3690,11 @@ namespace seq {
result.push_back(sigma_pair(ex, eps, m));
return true;
}
if (r->is_full_seq()) {
const expr_ref ex(r->get_expr(), m);
result.push_back(sigma_pair(ex, ex, m));
return true;
}
if (r->is_union()) {
// σ(r₁ ⊔ r₂) = σ(r₁) ∪ σ(r₂)
SASSERT(r->num_args() >= 2);
@ -3795,6 +3800,7 @@ namespace seq {
}
// the simplifier should have eliminated most of them already
// TODO: so far, we are, however, still missing bounded repetitions and ite
std::cout << "Unknown element " << mk_pp(r->get_expr(), m) << std::endl;
return false;
}