mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-04-15 21:38:44 +00:00
Code Activity
17402 commits 23 branches 48 tags 157 MiB
Commit graph

98 commits

Author SHA1 Message Date
Nikolaj Bjorner 2d7a38e95e fix #6488 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-13 16:07:41 -08:00
Nikolaj Bjorner aded8e5bf4 fix #6488 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-12 11:40:59 -08:00
Nikolaj Bjorner 4598af70c8 fix #6488 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-12 11:04:46 -08:00
Nikolaj Bjorner a3e6885680 fix #6488 2022-12-12 09:50:44 -08:00
Nikolaj Bjorner 039de6a2c8 build issues 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-11 15:05:13 -08:00
Nuno Lopes cb8603177e fix build 2022-12-11 22:17:11 +00:00
Nikolaj Bjorner 2520dcb04b merge 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-11 14:03:22 -08:00
Nuno Lopes 2d43ccc4c6 Revert "fix crashes in elim-uncnstr2" 
This reverts commit a302c2f15e.
 2022-12-11 21:37:25 +00:00
Nikolaj Bjorner 6a1b3f7344 move debug output to before state update 2022-12-11 12:51:46 -08:00
Nikolaj Bjorner f7269bb60a update doc 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-11 10:16:17 -08:00
Nikolaj Bjorner a9f52b0069 doc fixes 2022-12-11 10:04:01 -08:00
Nuno Lopes a302c2f15e fix crashes in elim-uncnstr2 
This would crash before:
(declare-fun x () (_ BitVec 4))
(assert (not (bvule x #x1)))
(apply elim-uncnstr2)

That's because the index_set iterator was querying qtail to compute the end of the iteration
But the problem is that elim-uncnstr2 may add new fmls to the goal, as in this case.
The bvule is replaced with an 'or', but since it's negated, it turns into 2 goals
Solve the issue by freezing the qtail for the iteration loop.
This is the right behavior for elim-uncnstr2, as it can't rewrite exprs that haven't been analyzed before

@NikolajBjorner please check if this the right behavior for the other simplifiers. Thank you
 2022-12-11 15:21:23 +00:00
Nuno Lopes c6f9c09d70 cleanup more in dependent_expr_state_tactic to reduce mem consumption 2022-12-09 11:34:53 +00:00
Nikolaj Bjorner 7e69dab8f6 distribute forall cpp code 2022-12-06 18:15:18 -08:00
Nikolaj Bjorner c33e58ee1a update distribute forall 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-12-06 17:59:33 -08:00
Nikolaj Bjorner 80033e8744 cave in to supporting proofs (partially) in simplifiers, updated doc 2022-12-06 17:02:04 -08:00
Nikolaj Bjorner 5a5758baaa add documentation to initial selection of tactics 2022-12-05 20:05:06 -08:00
Nuno Lopes eb8c53c164 simplify factory of dependent_expr_state_tactic 
And as a side-effect, remove heap allocations for factories
 2022-12-05 14:07:57 +00:00
Nikolaj Bjorner de916f50d6 add demodulator tactic based on demodulator-simplifier 
- some handling for commutative operators
- fix bug in demodulator_index where fwd and bwd are swapped
 2022-12-05 03:20:46 -08:00
Nikolaj Bjorner ead2a46a88 build 2022-12-04 10:38:24 -08:00
Nikolaj Bjorner b76ed6a47f proper fix to #6476 2022-12-04 10:19:39 -08:00
Nikolaj Bjorner 1974c224ab add demodulator simplifier 
refactor demodulator-rewriter a bit to separate reusable features.
 2022-12-04 09:39:28 -08:00
Nikolaj Bjorner 79e6d4e32d tune and debug elim-unconstrained (v2 - for simplifiers infrastructure) 2022-12-04 03:53:31 -08:00
Nikolaj Bjorner 3ebbb8472a fix perf bugs in new value propagation 2022-12-04 03:53:30 -08:00
Nikolaj Bjorner 758c3b2c3b fix filtering for recursive functions 2022-12-04 03:53:30 -08:00
Nikolaj Bjorner a96b7d243a remove incorrect check for quantifier 2022-12-01 00:04:08 -08:00
Nikolaj Bjorner e5984dd397 add cnf/nnf simplifier 2022-11-30 23:04:38 -08:00
Nikolaj Bjorner e3e2c21632 Create cnf_nnf.h 2022-11-30 22:53:14 -08:00
Nikolaj Bjorner f24ecde35c wip - fixes to simplifiers 2022-12-01 09:31:52 +09:00
Nikolaj Bjorner cfc8e19baf add more simplifiers, fix model reconstruction order for elim_unconstrained 
- enable sat.smt in smt_tactic that
is invoked by default on first goals
add flatten-clauses
add push-ite
have tptp5 front-end pretty print SMT2 formulas a little nicer.
 2022-12-01 02:35:43 +09:00
Nikolaj Bjorner edb0fc394b rewrite some simplifiers 2022-11-30 23:15:32 +09:00
Nikolaj Bjorner 23c53c6820 fix build 2022-11-30 19:36:13 +09:00
Nikolaj Bjorner c1ff3d3192 wip - adding quasi macro detection 2022-11-30 13:46:00 +07:00
Nikolaj Bjorner b084821a0c wip - dependent expr simpliifer 
- simplify iterator over current indices
- add more simplifiers used by asserted_formulas
- improve diagnostics printing
 2022-11-30 13:41:40 +07:00
Nikolaj Bjorner bec3acd146 consolidate freeze functionality into dependent_expr_state 
rename size() to qtail() and introduce shortcuts
ensure tactic goals are not updated if they are in inconsistent state (because indices could be invalidated)
 2022-11-30 08:35:29 +07:00
Nikolaj Bjorner 73a652cf4b some fixes to backtracking restore points in new solver 2022-11-29 16:42:42 +07:00
Nikolaj Bjorner dd1ca8f6bd move qhead to attribute on the state instead of the simplifier, 
- add sat.smt option to enable the new incremental core (it is not ready for mainstream consumption as cloning and other features are not implemented and it hasn't been tested in any detail yet).
- move "name" into attribute on simplifier so it can be reused for diagnostics by the seq-simplifier.
 2022-11-29 16:36:02 +07:00
Nikolaj Bjorner 82d9e4a4fc update goal2sat interface to use explicit initialization 2022-11-28 15:04:12 +07:00
Nikolaj Bjorner 500626e814 add sat-smt-preprocess module 
self-contained pre-processing initialization
 2022-11-28 12:13:00 +07:00
Nikolaj Bjorner 85f9c7eefa replace restore_size_trail by more generic restore_vector 
other updates:
- change signature of advance_qhead to simplify call sites
- have model reconstruction replay work on a tail of dependent_expr state, while adding formulas to the tail.
 2022-11-28 11:45:56 +07:00
Nikolaj Bjorner 6454014119 enable incrementality for model reconstruction 2022-11-25 15:28:38 +07:00
Nikolaj Bjorner 4e9f21c2a1 add rewriter and seq simplifiers 2022-11-25 15:16:14 +07:00
Nikolaj Bjorner a152f9cfd6 port bit-blaster to simplifiers 
inc_sat_solver uses bit-blaster, card2bv and max_bv_sharing.
By turning these into simplifiers it will be possible to remove
dependencies on tactics and goals in inc_sat_simplifier and instead use a modular and general incremental pre-processing infrastructure.
 2022-11-25 13:37:16 +07:00
Nikolaj Bjorner f0570fbc0e remove tactic exception dependency 2022-11-25 11:48:44 +07:00
Nikolaj Bjorner e95b0bd2cd remove include of tactical 2022-11-25 11:47:38 +07:00
Nikolaj Bjorner 8184e7fe0a keep track of qhead 2022-11-25 11:42:16 +07:00
Nikolaj Bjorner 5af6e1a046 make max_bv_sharing a simplifier 2022-11-25 11:38:41 +07:00
Nikolaj Bjorner db74e23de1 make card2bv a simplifier 2022-11-25 11:07:31 +07:00
Nikolaj Bjorner cb789f6ca8 add arithmetical macros 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-11-24 23:44:35 +07:00
Nikolaj Bjorner eb812e47be cleanup 2022-11-24 22:46:35 +07:00