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Author SHA1 Message Date
Nikolaj Bjorner 3fa81d6527 bug fixes to elim-uncnstr2 tactic 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-11-13 13:25:19 -08:00
Nikolaj Bjorner 38cde14e08 wip missing updates 2022-11-13 12:10:43 -08:00
Nikolaj Bjorner 196788a091 bug fix for equality solving 2022-11-13 12:09:56 -08:00
Nikolaj Bjorner ce76e3138d streamlining expr-inverter code 2022-11-13 11:48:32 -08:00
Nikolaj Bjorner 3d570aaa0a add missing process_eq 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-11-12 18:43:57 -08:00
Nikolaj Bjorner 0b83732b82 missing override specifier 2022-11-12 18:35:41 -08:00
Nikolaj Bjorner 343603f643 fix build 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-11-12 18:34:04 -08:00
Nikolaj Bjorner e33e66212c propagate values should not flatten and/or 
also, elim_uncstr should only be disabled on recursive functions
 2022-11-12 18:03:47 -08:00
Nikolaj Bjorner f4e17ecc65 add logging and diagnostics 2022-11-12 18:03:47 -08:00
Nikolaj Bjorner 9d09064ad0 add comments to elim_unconstrained and remove unused function 2022-11-12 18:01:38 -08:00
Nikolaj Bjorner efbe0a6554 wip - updated version of elim_uncstr_tactic 
- remove reduce_invertible. It is subsumed by reduce_uncstr(2)
- introduce a simplifier for reduce_unconstrained. It uses reference counting to deal with inefficiency bug of legacy reduce_uncstr. It decomposes theory plugins into expr_inverter.

reduce_invertible is a tactic used in most built-in scenarios. It is useful for removing subterms that can be eliminated using "cheap" quantifier elimination. Specifically variables that occur only once can be removed in many cases by computing an expression that represents the effect computing a value for the eliminated occurrence.

The theory plugins for variable elimination are very partial and should be augmented by extensions, esp. for the case of bit-vectors where the invertibility conditions are thoroughly documented by Niemetz and Preiner.
 2022-11-12 17:56:45 -08:00
Nikolaj Bjorner 689af3b4df add comments to elim_unconstr_tactic 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-11-10 16:42:09 -08:00
Nikolaj Bjorner 15be80c954 remove dependency on hash_compare 2022-11-09 09:06:34 -08:00
Nikolaj Bjorner 8da13ae24a add statistics to verbose output of asserted formulas 2022-11-08 18:37:30 -08:00
Nikolaj Bjorner 9a656772b4 fix #6446 2022-11-08 18:37:16 -08:00
Nikolaj Bjorner 4d86d73942 disable also tests for Windows x86, does not work with CI pipeline 2022-11-08 17:15:59 -08:00
Nikolaj Bjorner ff68df3451 update output of z3 doc 2022-11-08 16:10:50 -08:00
Nikolaj Bjorner 254f7b97ef cleanup state to clear model trail during calls. 2022-11-08 15:56:10 -08:00
Nikolaj Bjorner 823cd23ecc building x64 windows tests during ci is too slow, skipping tests 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-11-08 15:37:56 -08:00
Nikolaj Bjorner 3faca52c40 re-enable new solve_eqs with bug fixes 2022-11-08 14:17:17 -08:00
Nikolaj Bjorner 9ef78fcfa7 revert new solve-eqs 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-11-08 13:57:58 -08:00
Nikolaj Bjorner 3a37cfca30 switch to solve_eqs2 tactic 2022-11-08 12:23:36 -08:00
Nikolaj Bjorner f769e2f1f6 have bool rewriter use flat_and_or, and integrate hoist rewriter 2022-11-08 12:21:50 -08:00
Nikolaj Bjorner 238ea0a264 add shorthands for concatentation 2022-11-08 12:21:25 -08:00
Nikolaj Bjorner 3a4b8e2334 add rewrite rules to bv-rewriter 2022-11-08 12:20:51 -08:00
Nikolaj Bjorner a34701471f clean up hoist rewriter 2022-11-08 12:20:25 -08:00
Nikolaj Bjorner ab36f86843 add handler for reporting statistics 2022-11-08 12:19:48 -08:00
Nikolaj Bjorner 8afec86fe8 add option for flat_and_or 2022-11-08 12:19:27 -08:00
Nikolaj Bjorner 10fb71cf93 better error description for configuring restart 2022-11-08 12:18:45 -08:00
Nikolaj Bjorner cbc5b1f4f6 have theory_recfun use recursive function discriminator to control when it is enabled 2022-11-06 12:09:45 -08:00
Nikolaj Bjorner f004478565 produce tseitin justification for clause proofs when a clause is a "gate". 2022-11-06 12:00:25 -08:00
Nikolaj Bjorner 53b6059276 bypass built-in proof objects for clause trail 
the build-in proof constructors are not flexible when it comes to allowing alternation of justified lemmas and lemmas without justifications.
 2022-11-06 11:59:56 -08:00
Nikolaj Bjorner 8ff1e44a95 add discriminator to whether context contains recursive functions to avoid enabling recursive function solver when there are just macros 2022-11-06 11:58:21 -08:00
Nikolaj Bjorner a4c2a2b22c use ast_util::mk_not to avoid redundant double negations during nff 2022-11-06 11:57:46 -08:00
Nikolaj Bjorner 78f9e6b31a extend error type message with more information - display the arguments that are passed 2022-11-06 11:57:21 -08:00
Nikolaj Bjorner 4c1a3fab64 fix #6442 2022-11-05 23:15:03 -07:00
Nikolaj Bjorner d8133a47c2 Update solve_eqs.cpp 2022-11-05 22:47:46 -07:00
Nikolaj Bjorner 6c12aaad74 wip - testing solve-eqs2, added as tactic 2022-11-05 22:42:59 -07:00
Nikolaj Bjorner 4d8860c0bc wip - adding context equation solver 
the solve_eqs_tactic is to be replaced by a re-implementation that uses solve_eqs in the simplifiers directory.
The re-implementation should address efficiency issues with the previous code.
At this point it punts on low level proofs. The plan is to use coarser
dependency tracking instead of low level proofs for pre-processing. Dependencies can be converted into a proof hint representation that can be checked using a stronger checker.
 2022-11-05 10:34:57 -07:00
Nikolaj Bjorner ae2672f132 fix build 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-11-04 14:11:24 -07:00
Nikolaj Bjorner 154b09309b fixing build, wip on model reconstruction integration into dependent-expr-state 2022-11-04 14:04:44 -07:00
Nikolaj Bjorner 7bb962d934 add ad-hoc any-of for cross compatibility and simplifying interface 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-11-04 12:49:55 -07:00
Nikolaj Bjorner 49d1490454 add ad-hoc any-of for cross compatibility and simplifying interface 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-11-04 12:48:30 -07:00
Nikolaj Bjorner de9368bab0 Update expr_replacer.h 2022-11-04 11:25:39 -07:00
Nikolaj Bjorner 28668c6efc set up model reconstruction trail 2022-11-04 11:25:39 -07:00
Nikolaj Bjorner 84af521514 fixes #6439 #6436 2022-11-04 09:36:06 -07:00
Nikolaj Bjorner 626380b3c7 fixing build 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-11-03 22:08:21 -07:00
Nikolaj Bjorner e8112a6564 add initial stubs for model reconstruction trail 2022-11-03 21:35:07 -07:00
Nikolaj Bjorner 9007bdf780 move horn_subsume_model_converter to ast/converters 2022-11-03 20:26:02 -07:00
Nikolaj Bjorner 25bb935793 move more converters 2022-11-03 20:18:21 -07:00