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Move nseq_regex/state into smt/seq and seq_model into smt/; rename to seq_* prefix (#8984)

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* Initial plan

* build verified: nseq_regex moved to smt/seq

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

* rename nseq_regex/state/model to seq_regex/state/model in smt/seq; add Clemens Eisenhofer as co-author

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

* seq_model: remove theory_nseq dependency; get family_id from seq_util

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

* Add comments for regex enhancements in seq_model

Added comments regarding future improvements for regex handling.

* Add comments for large exponent handling

Add comments for handling large exponents in seq_model.cpp

* Revise comments for clarity on sort usage

Updated comments to reflect review suggestions regarding the use of the sort of 'n'.

* seq_state: remove sgraph dep; seq_model: use snode sort for is_empty; remove NSB review comments

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

* Update seq_state.h

* Remove unnecessary include for smt_context.h

* move seq_model from smt/seq/ to smt/; fix seq_state.h add_str_mem typo

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
Co-authored-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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Copilot 2026-03-14 11:45:32 -07:00 • committed by GitHub
parent 27f5541b0b
commit 5a3dbaf9f3
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15 changed files with 172 additions and 164 deletions
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6
src/smt/theory_nseq.cpp
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@ -35,9 +35,9 @@ namespace smt {
m_sgraph(ctx.get_manager(), m_egraph),
m_context_solver(ctx.get_manager()),
m_nielsen(m_sgraph, m_context_solver),
m_state(m_sgraph),
m_state(),
m_regex(m_sgraph),
m_model(*this, ctx.get_manager(), m_seq, m_rewriter, m_sgraph, m_regex)
m_model(ctx.get_manager(), m_seq, m_rewriter, m_sgraph, m_regex)
{}
// -----------------------------------------------------------------------
@ -339,7 +339,7 @@ namespace smt {
m_nielsen.add_str_eq(eq.m_lhs, eq.m_rhs);
}
// transfer regex memberships, pre-processing through nseq_regex
// transfer regex memberships, pre-processing through seq_regex
// to consume ground prefixes via Brzozowski derivatives
for (unsigned state_idx = 0; state_idx < m_state.str_mems().size(); ++state_idx) {
auto const& mem = m_state.str_mems()[state_idx];