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add option to disable integer theory integration in theory_str; this is currently ENABLED

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This commit is contained in:
Murphy Berzish 2016-07-23 23:29:56 -04:00
parent 02a66c425e
commit f555074e27
2 changed files with 37 additions and 0 deletions
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21
src/smt/theory_str.cpp
View file

@ -34,6 +34,7 @@ theory_str::theory_str(ast_manager & m):
opt_VerifyFinalCheckProgress(true),
opt_LCMUnrollStep(2),
opt_NoQuickReturn_Concat_IntegerTheory(true),
opt_DisableIntegerTheoryIntegration(true),
/* Internal setup */
search_started(false),
m_autil(m),
@ -3747,6 +3748,11 @@ static theory_mi_arith* get_th_arith(context& ctx, theory_id afid, expr* e) {
}
bool theory_str::get_value(expr* e, rational& val) const {
if (opt_DisableIntegerTheoryIntegration) {
TRACE("t_str_detail", tout << "WARNING: integer theory integration disabled" << std::endl;);
return false;
}
context& ctx = get_context();
ast_manager & m = get_manager();
theory_mi_arith* tha = get_th_arith(ctx, m_autil.get_family_id(), e);
@ -3773,6 +3779,11 @@ bool theory_str::get_value(expr* e, rational& val) const {
}
bool theory_str::lower_bound(expr* _e, rational& lo) {
if (opt_DisableIntegerTheoryIntegration) {
TRACE("t_str_detail", tout << "WARNING: integer theory integration disabled" << std::endl;);
return false;
}
context& ctx = get_context();
ast_manager & m = get_manager();
theory_mi_arith* tha = get_th_arith(ctx, m_autil.get_family_id(), _e);
@ -3782,6 +3793,11 @@ bool theory_str::lower_bound(expr* _e, rational& lo) {
}
bool theory_str::upper_bound(expr* _e, rational& hi) {
if (opt_DisableIntegerTheoryIntegration) {
TRACE("t_str_detail", tout << "WARNING: integer theory integration disabled" << std::endl;);
return false;
}
context& ctx = get_context();
ast_manager & m = get_manager();
theory_mi_arith* tha = get_th_arith(ctx, m_autil.get_family_id(), _e);
@ -3791,6 +3807,11 @@ bool theory_str::upper_bound(expr* _e, rational& hi) {
}
bool theory_str::get_len_value(expr* e, rational& val) {
if (opt_DisableIntegerTheoryIntegration) {
TRACE("t_str_detail", tout << "WARNING: integer theory integration disabled" << std::endl;);
return false;
}
context& ctx = get_context();
ast_manager & m = get_manager();
theory* th = ctx.get_theory(m_autil.get_family_id());

16
src/smt/theory_str.h
View file

@ -100,9 +100,25 @@ namespace smt {
* will not return from the function after asserting their axioms.
* This means that control will fall through to the type 1-6 axioms,
* causing those to be added as well.
* The default behaviour of Z3str2 is to set this to 'false'.
*/
bool opt_NoQuickReturn_Concat_IntegerTheory;
/*
* If DisableIntegerTheoryIntegration is set to true,
* ALL calls to the integer theory integration methods
* (get_value, get_len_value, lower_bound, upper_bound)
* will ignore what the arithmetic solver believes about length terms,
* and will return no information.
*
* This reduces performance significantly, but can be useful to enable
* if it is suspected that string-integer integration, or the arithmetic solver itself,
* might have a bug.
*
* The default behaviour of Z3str2 is to set this to 'false'.
*/
bool opt_DisableIntegerTheoryIntegration;
bool search_started;
arith_util m_autil;
str_util m_strutil;