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4074 commits

Author SHA1 Message Date
Jakob Rath
8774952aeb Merge remote-tracking branch 'origin/master' into polysat 2023-02-06 10:50:05 +01:00
Nikolaj Bjorner
efbecb19b1 compiler warning
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2023-02-02 19:23:30 -08:00
Jakob Rath
20b5455d08 Merge branch 'master' into polysat 2023-02-01 16:28:57 +01:00
Nikolaj Bjorner
304b316314 move bounded division lemmas to nla solver/ nla_divisions. 2023-01-30 11:11:04 -08:00
Nikolaj Bjorner
2c4a9c2f5c fix division filter
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2023-01-30 08:20:26 -08:00
Nikolaj Bjorner
8e37e2f913 handle non-linear division axioms, consolidate backtracking state in nla_core
this update enables new incremental linear axioms based on division terms.
It also consolidates some of the backtracking state in nla_core / emons to use stack traces instead of custom backtracking state.
2023-01-29 17:22:57 -08:00
Nikolaj Bjorner
8ea49eed8e convert reduce-args to a simplifier
- convert reduce-args to a simplifier. Currently exposed as reduce-args2 tactic until the old tactic code gets removed.
- bug fixes in model_reconstruction trail
  - allow multiple defs to be added with same pool of removed formulas
  - fix tracking of function symbols instead of expressions to filter replay
- add nla_divisions to track (cheap) divisibility lemmas.
-
2023-01-28 20:12:14 -08:00
Nikolaj Bjorner
ae24b73b19 bugfixes to incremental linearization for expanding power
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2023-01-26 21:19:45 -08:00
Nikolaj Bjorner
eac7d7576f force to_fp to disambiguate +zero and -zero, #6548, filter unsupported on relevancy
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2023-01-24 12:29:42 -08:00
Nikolaj Bjorner
4601d1d664 fix #6550
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2023-01-24 03:37:09 -08:00
Nikolaj Bjorner
2ae476416c initial outline of exponentiation
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2023-01-23 17:38:34 -08:00
Nikolaj Bjorner
83662701b6
Update theory_lra.cpp
remove spurious output
2023-01-22 16:27:48 -08:00
Nikolaj Bjorner
806a4772bc revert effect of filtering unsupported
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2023-01-20 17:28:24 -08:00
Nikolaj Bjorner
4e6d498a60 adding placeholder for refining power of 2 2023-01-20 14:37:05 -08:00
Nikolaj Bjorner
0f4f32c5d0 apply relevancy filtering on unsupported ops, fix term construction bug in bv2fpa_converter fix #6548 2023-01-20 13:05:01 -08:00
Nikolaj Bjorner
f3d6856736 remove msf example, add option to make model converter not reduce models
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2023-01-19 20:24:31 -08:00
Nikolaj Bjorner
7368f9f7d3 increase build version, better propagation in euf-egraph, handle assumptions in sat.smt
- increase build version to 4.12.1. This prepares updated release for MacOs-11 build on x86
- move literal propagation mode in euf-egraph to a callback and traversal of equivalence class. Track antecedent by newest equality instead of root. This makes equality propagation to literals have similar behavior as in legacy solver and appears to result in a speedup (10% fewer conflicts on QF_UF/QG-classification/qg5/iso_icl478.smt2 in preliminary testing)
- fix interaction of pre-processing and assumptions. Pre-processing has to freeze assumption literals so they don't get eliminated. This is similar to dependencies that are already frozen.
2023-01-17 14:07:07 -08:00
Nikolaj Bjorner
dde5218b29 fix mbqi value caching issue raised by Clemens and Martin 2023-01-15 22:47:34 -05:00
Nikolaj Bjorner
4f7f4376b8 fix bug in new core not detecting conflict, fix #6525, add tactic doc
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2023-01-14 17:20:43 -05:00
Nikolaj Bjorner
8970a54eaa expose parameters to control behavior for #5660 2023-01-10 22:06:19 -08:00
Nikolaj Bjorner
d415f07386 memory leak on proof justifications
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2023-01-10 18:58:25 -08:00
Nikolaj Bjorner
c3e31149a5 fix #6530
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2023-01-10 13:43:17 -08:00
Nikolaj Bjorner
1ddef117a2 several fixes to proof logging in legacy solver
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2023-01-08 16:11:31 -08:00
Nikolaj Bjorner
fcea32344e add missing tactic descriptions, add rewrite for tamagochi
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2023-01-08 13:32:26 -08:00
Nuno Lopes
d30cb55bae don't flush stream when printing param vals 2023-01-03 09:35:17 +00:00
Nikolaj Bjorner
f6d411d54b experimental feature to access congruence closure of SimpleSolver
This update includes an experimental feature to access a congruence closure data-structure after search.
It comes with several caveats as pre-processing is free to eliminate terms. It is therefore necessary to use a solver that does not eliminate the terms you want to track for congruence of. This is partially addressed by using SimpleSolver or incremental mode solving.

```python
from z3 import *
s = SimpleSolver()
x, y, z = Ints('x y z')
s.add(x == y)
s.add(y == z)
s.check()
print(s.root(x), s.root(y), s.root(z))
print(s.next(x), s.next(y), s.next(z))
```
2022-12-30 21:41:27 -08:00
Nikolaj Bjorner
c0f1f33898 dampen second setup of theory_bv 2022-12-30 18:47:32 -08:00
Nuno Lopes
47324af210 be nicer when memout is reached in SMT internalize: return undef rather than crashing 2022-12-29 11:08:57 +00:00
Nikolaj Bjorner
fe8034731d fix #6501 2022-12-19 21:02:55 -08:00
Nuno Lopes
d308b8f555 simplify code + remove unused file 2022-12-11 22:11:19 +00:00
Nikolaj Bjorner
847aec1d30 update dependencies 2022-11-30 22:48:10 -08:00
Nikolaj Bjorner
529f116be0 disable new code until pre-condition gets fixed
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2022-11-30 22:29:59 -08:00
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
0a671f2f44 fix #6464 2022-11-23 17:21:51 +07:00
Nikolaj Bjorner
0a28bacd0f remove debug out 2022-11-23 16:42:36 +07:00
Nikolaj Bjorner
6188c536ef add logging of propagations to smt core
log theory propagations with annotation "smt".
It allows tracking theory propagations (when used in conflicts) in the clause logs similar to the new core.
2022-11-23 11:37:23 +07:00
Nikolaj Bjorner
5374142e3e continue updates for adding proof-log to smt core 2022-11-23 11:37:23 +07:00
Nikolaj Bjorner
bfae8b2162 set flat_and_or to false in bv rewriter 2022-11-15 05:47:28 -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
84af521514 fixes #6439 #6436 2022-11-04 09:36:06 -07:00
Nikolaj Bjorner
1dca6402fb move model and proof converters to self-contained module 2022-11-03 05:23:01 -07:00
Nikolaj Bjorner
7eee7914bd align format of quantifier instantiation with new core
So far the format is

(forall ((x Int)) body) (not (body[t/x]))

The alternative could be the clause

(not (forall ((x Int)) body)) body[t/x]

they just better be consistent between engines
2022-10-21 15:26:00 -07:00
Nikolaj Bjorner
ad5fa9433f add experiment with quot-rem encoding
experiment seeks to determine whether quot-rem encoding can substitute the division circuit encoding.
A first test suggests it makes no difference.
2022-10-21 09:25:45 -07:00
Nikolaj Bjorner
842e8057bc log also quantifier generation (besides binding)
We add also logging for quantifier generation.
It is auxiliary information that is of use for diagnostics (axiom profiler).
2022-10-20 17:49:15 -07:00
Nikolaj Bjorner
fc30461828 unused variables
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2022-10-20 09:09:06 -07:00
Nikolaj Bjorner
07dd1065db added API to monitor clause inferences
See RELEASE_NOTES for more information
examples pending.
2022-10-19 08:34:55 -07:00
Nikolaj Bjorner
464d52babe fix #6410
regression after introducing beta-redex optimization
2022-10-18 12:34:45 -07:00
Nikolaj Bjorner
7036dd826f update defaults to make it easier to test polysat
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
2022-10-13 19:46:45 +02:00