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Solve disequalities lazily

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CEisenhofer 2026-05-27 17:25:39 +02:00
parent 4cd908345a
commit e74b235d87
10 changed files with 337 additions and 16 deletions
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2
src/params/smt_params.cpp
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@ -59,6 +59,7 @@ void smt_params::updt_local_params(params_ref const & _p) {
m_nseq_regex_precheck = p.nseq_regex_precheck();
m_nseq_regex_factorization_threshold = p.nseq_regex_factorization_threshold();
m_nseq_signature = p.nseq_signature();
m_nseq_axiomatize_diseq = p.nseq_axiomatize_diseq();
m_up_persist_clauses = p.up_persist_clauses();
validate_string_solver(m_string_solver);
if (_p.get_bool("arith.greatest_error_pivot", false))
@ -173,6 +174,7 @@ void smt_params::display(std::ostream & out) const {
DISPLAY_PARAM(m_nseq_parikh);
DISPLAY_PARAM(m_nseq_regex_precheck);
DISPLAY_PARAM(m_nseq_regex_factorization_threshold);
DISPLAY_PARAM(m_nseq_axiomatize_diseq);
DISPLAY_PARAM(m_profile_res_sub);
DISPLAY_PARAM(m_display_bool_var2expr);

1
src/params/smt_params.h
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@ -254,6 +254,7 @@ struct smt_params : public preprocessor_params,
bool m_nseq_regex_precheck = true;
unsigned m_nseq_regex_factorization_threshold = 1;
bool m_nseq_signature = false;
bool m_nseq_axiomatize_diseq = false;
smt_params(params_ref const & p = params_ref()):
m_string_solver(symbol("auto")){

1
src/params/smt_params_helper.pyg
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@ -131,6 +131,7 @@ def_module_params(module_name='smt',
('nseq.regex_precheck', BOOL, True, 'enable regex membership pre-check before DFS in theory_nseq: checks intersection emptiness per-variable and short-circuits SAT/UNSAT for regex-only problems'),
('nseq.regex_factorization_threshold', UINT, 1, 'maximum number of cases to factor a classical regex into in a single step (gives completeness on classical regexes)'),
('nseq.signature', BOOL, False, 'enable heuristic signature-based string equation splitting in Nielsen solver'),
('nseq.axiomatize_diseq', BOOL, False, 'eagerly axiomatize sequence disequalities'),
('core.validate', BOOL, False, '[internal] validate unsat core produced by SMT context. This option is intended for debugging'),
('seq.split_w_len', BOOL, True, 'enable splitting guided by length constraints'),
('seq.validate', BOOL, False, 'enable self-validation of theory axioms created by seq theory'),