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Does model construction work properly now?

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CEisenhofer 2026-04-10 17:59:16 +02:00
parent e6ef0d29c4
commit 2b7204b07c
4 changed files with 204 additions and 22 deletions
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16
src/smt/seq_model.h
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@ -28,6 +28,7 @@ Author:
--*/
#pragma once
#include "smt_context.h"
#include "ast/seq_decl_plugin.h"
#include "ast/rewriter/seq_rewriter.h"
#include "ast/euf/euf_sgraph.h"
@ -43,9 +44,13 @@ namespace smt {
class model_generator;
struct tracked_str_mem;
class model_value_proc;
class seq_snode_value_proc;
class seq_model {
friend class seq_snode_value_proc;
ast_manager& m;
context& m_ctx;
seq_util& m_seq;
seq_rewriter& m_rewriter;
euf::sgraph& m_sg;
@ -69,7 +74,7 @@ namespace smt {
u_map<euf::snode*> m_var_regex;
public:
seq_model(ast_manager& m, seq_util& seq,
seq_model(ast_manager& m, context& ctx, seq_util& seq,
seq_rewriter& rw, euf::sgraph& sg);
// Phase 1: initialize model construction.
@ -97,7 +102,14 @@ namespace smt {
// recursively substitute known variable assignments into an snode tree.
// Returns a concrete Z3 expression.
expr_ref snode_to_value(euf::snode* n);
expr_ref snode_to_value(euf::snode* n, model_generator& mg);
// Same as above, but optionally uses pre-evaluated model values for
// enode dependencies (provided by model_generator).
expr_ref snode_to_value(euf::snode* n, model_generator& mg, obj_map<enode, expr*> const* dep_values);
// Collect enode dependencies required to evaluate an snode value.
void collect_dependencies(euf::snode* n, obj_hashtable<enode>& seen, ptr_vector<enode>& deps) const;
// register all string literals appearing in the constraint store
// with the factory to avoid collisions with fresh values.