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theory_nseq: remove seq_state, embed tracked entries directly in prop_queue (#9045)

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* Remove seq_state: embed tracked_str_eq/tracked_str_mem directly in prop_queue

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

* theory_nseq: use type aliases for eq_item/mem_item instead of wrapper structs

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

* seq_model: validate_regex takes single tracked_str_mem, caller loops

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>
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Copilot 2026-03-19 14:45:53 -07:00 • committed by GitHub
parent 8795bf06fb
commit 59bc9b17ea
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5 changed files with 114 additions and 168 deletions
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5
src/smt/seq_model.h
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@ -32,6 +32,7 @@ Author:
#include "ast/rewriter/seq_rewriter.h"
#include "ast/euf/euf_sgraph.h"
#include "smt/seq/seq_nielsen.h"
#include "smt/seq/seq_state.h" // tracked_str_mem
#include "model/seq_factory.h"
class proto_model;
@ -40,7 +41,7 @@ namespace smt {
class enode;
class model_generator;
class seq_state;
struct tracked_str_mem;
class model_value_proc;
class seq_model {
@ -87,7 +88,7 @@ namespace smt {
// Validate that model assignments satisfy all regex membership
// constraints from the state. Checks positive and negative
// memberships. Returns true if all constraints pass.
bool validate_regex(seq_state const& state, ::proto_model& mdl);
bool validate_regex(tracked_str_mem const& mem, ::proto_model& mdl);
private:
// extract variable assignments from the sat path (root-to-leaf edges).