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16416 commits

Author SHA1 Message Date
Nikolaj Bjorner
e0945f57bb fix #7554 
mbp_qel  uses two iterations of saturation.
The first iteration uses only congruences, not the model.
The second iteration uses the model.
Terms are marked as "seen" during either iteration and will not be reprocessed if they are "seen".
All select terms get marked as "seen" to avoid reproducing Ackerman axioms.
But this conflicts with expanding select-store axioms during
the phase of saturation where use_model is allowed.
 2025-02-18 21:04:34 -08:00
Nikolaj Bjorner
28f3f8046e #7559 2025-02-18 20:50:06 -08:00
Nikolaj Bjorner
11066486d7 #7559 2025-02-18 20:48:13 -08:00
Nikolaj Bjorner
991cffb519 handle multi-arity arrays 2025-02-18 20:38:45 -08:00
Nikolaj Bjorner
674e1b8f98 remove equality check on container 2025-02-18 20:15:42 -08:00
Nikolaj Bjorner
ce69b54b5f adjust select/store rule for n-ary arrays 2025-02-18 20:08:56 -08:00
Nikolaj Bjorner
42f6e1300a more review of mbp_arrays 2025-02-18 19:48:54 -08:00
Nikolaj Bjorner
a4a84ed083 arrays are not necessarily unary 2025-02-18 19:13:12 -08:00
Nikolaj Bjorner
a5e5a35755 code simplification 2025-02-18 19:07:58 -08:00
Nikolaj Bjorner
a143ed3bff taking a look at mbp_qel for arrays 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2025-02-18 16:28:49 -08:00
Nikolaj Bjorner
813da35539 fix unit test 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2025-02-17 20:36:38 -08:00
Nikolaj Bjorner
f8f26788ad convert def into expression tree 
prior data-structure could not represent
((1 + x) div 2) * 2
It is possible to have nested expressions with div.
To deal with this, replace original def by an expression tree data-structure.
 2025-02-17 18:47:00 -08:00
Nikolaj Bjorner
f977b48161 adjust solve_for to handle rationals 2025-02-17 13:59:23 -08:00
Nikolaj Bjorner
528efbb535 fixes to failure conditions for unification 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2025-02-16 13:41:17 -08:00
Nikolaj Bjorner
fe27ca1dd0 remove verbose output 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2025-02-16 13:23:56 -08:00
Nikolaj Bjorner
50f9fddfd2 Add unification based projection function 
Heuristic for EMBPR is to unify terms that occur in uninterpreted contents. Walk partitions that are pure f(t) and an impure f(s)
and attempt to unify t with s ensuring that merges from s preserves satisfiability.
 2025-02-16 13:18:21 -08:00
Nikolaj Bjorner
b27a2aa7fc remove calls to removed def constructor 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2025-02-16 10:13:00 -08:00
Nikolaj Bjorner
a703cf81b1 replace model_ref by model* in tg_project, 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2025-02-15 19:34:52 -08:00
Nikolaj Bjorner
eee96ec312 bug fixes and cleanup in projection functions 
spacer would drop variables of sorts not handled by main loop.
- projection with witness needs to disable qel style preprocessing to ensure witnesses are returned.
- add euf plugin to handle uninterpreted sorts (and then uninterpreted functions)
 2025-02-15 14:11:20 -08:00
Lev Nachmanson
bedc95c4c7 use static_cast to avoid the warnings 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-13 07:07:12 -10:00
Phil Clayton
e6a089e63d
Fix build when Z3_API macro is non-empty (#7553) 
API function definitions are updated to be consistent with header files.
 2025-02-13 08:46:08 -08:00
Nikolaj Bjorner
94d3c591b5 make sure ackermann works with arrays that have more than one argument 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2025-02-11 21:28:31 -08:00
Nikolaj Bjorner
9ea921ba8e update spacer projection for arrays to allow ackerman reduction for non-integer arrays 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2025-02-11 17:38:56 -08:00
Lev Nachmanson
e920291393 fixing the default parameters of dio and rename m_gomory_cuts to m_cuts 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
957b177c64 set arith.lp.dio_cuts_enable_gomory to False by default 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
5ec10e0250 address the review 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
8a9edd1aa7 fix the test build 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
79e3f8ab39 disabling dio handler by default, and fix a print out 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
2131e9b4e4 more accurate work with Markovich number 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
bdb8f54150 Revert "revert the term sorting" 
This reverts commit c79d4708cb.
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
5ebee24850 revert the term sorting 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
f2c1fd4c14 try markovich number 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
cec8dc2e6e try markovich number 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
3f2d2e8348 test 2025-02-11 12:23:00 -10:00
Lev Nachmanson
b6701d57f9 try another sort in tightening 2025-02-11 12:23:00 -10:00
Lev Nachmanson
5b0b224a5c try sorting terms before tightening 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
dcd5783232 remove the fresh definition when removing its column 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
17d68c18aa comment change 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
d90b94d0e2 stricter is_in_sync paying attenion to m_row2fresh_defs 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
134bed826a throttle the branching in dio 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
bd8cf29df7 ignore large changed_columns 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
3ac11cd136 fix assert 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
cf4e402a0f avoid usisg indexed_vector for term operations 2025-02-11 12:23:00 -10:00
Lev Nachmanson
440d78f237 disallow duplicates in a queue 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
7e02dfe484 add stats on m_dio_branching_conflicts 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
0bf3ca87e7 call normalize_e_by_gcd() only when moving an entry from F to S 2025-02-11 12:23:00 -10:00
Lev Nachmanson
99538567a7 rebase with master 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
a19e10912f make dio less aggressive, allow other cuts 
Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
 2025-02-11 12:23:00 -10:00
Lev Nachmanson
fee707842d register m_added_terms in m_changed_terms 2025-02-11 12:23:00 -10:00
Lev Nachmanson
21f67ef942 out of bounds fixes 2025-02-11 12:23:00 -10:00