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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
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commit 5a3dbaf9f3
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15 changed files with 172 additions and 164 deletions
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12
src/smt/theory_nseq.h
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@ -25,9 +25,9 @@ Author:
#include "smt/smt_theory.h"
#include "smt/smt_arith_value.h"
#include "smt/seq/seq_nielsen.h"
#include "smt/nseq_state.h"
#include "smt/nseq_regex.h"
#include "smt/nseq_model.h"
#include "smt/seq/seq_state.h"
#include "smt/seq/seq_regex.h"
#include "smt/seq_model.h"
#include "smt/nseq_context_solver.h"
namespace smt {
@ -43,9 +43,9 @@ namespace smt {
// to the m_nielsen constructor and must remain stable for the object's lifetime.
context_solver m_context_solver;
seq::nielsen_graph m_nielsen;
nseq_state m_state;
nseq_regex m_regex; // regex membership pre-processing
nseq_model m_model; // model construction helper
seq_state m_state;
seq::seq_regex m_regex; // regex membership pre-processing
seq_model m_model; // model construction helper
// propagation queue
struct prop_item {