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Add OP_SEQ_POWER to seq_decl_plugin and create euf_snode/euf_sgraph for string graph encapsulation

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Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
This commit is contained in:
copilot-swe-agent[bot] 2026-03-01 20:19:37 +00:00
parent debe81ee74
commit 2e17bb8767
6 changed files with 659 additions and 0 deletions
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5
src/ast/seq_decl_plugin.cpp
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@ -222,6 +222,7 @@ void seq_decl_plugin::init() {
m_sigs[OP_SEQ_NTH_I] = alloc(psig, m, "seq.nth_i", 1, 2, seqAintT, A);
m_sigs[OP_SEQ_NTH_U] = alloc(psig, m, "seq.nth_u", 1, 2, seqAintT, A);
m_sigs[OP_SEQ_LENGTH] = alloc(psig, m, "seq.len", 1, 1, &seqA, intT);
m_sigs[OP_SEQ_POWER] = alloc(psig, m, "seq.power", 1, 2, seqAintT, seqA);
m_sigs[OP_RE_PLUS] = alloc(psig, m, "re.+", 1, 1, &reA, reA);
m_sigs[OP_RE_STAR] = alloc(psig, m, "re.*", 1, 1, &reA, reA);
m_sigs[OP_RE_OPTION] = alloc(psig, m, "re.opt", 1, 1, &reA, reA);
@ -591,6 +592,10 @@ func_decl* seq_decl_plugin::mk_func_decl(decl_kind k, unsigned num_parameters, p
add_map_sig();
return mk_str_fun(k, arity, domain, range, k);
case OP_SEQ_POWER:
match(*m_sigs[k], arity, domain, range, rng);
return m.mk_func_decl(m_sigs[k]->m_name, arity, domain, rng, func_decl_info(m_family_id, k));
case OP_SEQ_TO_RE:
m_has_re = true;
return mk_seq_fun(k, arity, domain, range, _OP_STRING_TO_REGEXP);