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74 commits

Author SHA1 Message Date
Nikolaj Bjorner
4388719848 adjust logging 2022-10-14 18:56:18 +02:00
Nikolaj Bjorner
4abff18e8d fill in missing pieces of proof hint checker for Farkas and RUP 
The proof validator based on SMT format proof logs uses RUP to check propositional inferences and has plugins for theory axioms/lemmas.
 2022-08-31 05:29:15 -07:00
Nikolaj Bjorner
e2f4fc2307 overhaul of proof format for new solver 
This commit overhauls the proof format (in development) for the new core.

NOTE: this functionality is work in progress with a long way to go.
It is shielded by the sat.euf option, which is off by default and in pre-release state.
It is too early to fuzz or use it. It is pushed into master to shed light on road-map for certifying inferences of sat.euf.

It retires the ad-hoc extension of DRUP used by the SAT solver.
Instead it relies on SMT with ad-hoc extensions for proof terms.
It adds the following commands (consumed by proof_cmds.cpp):

- assume  - for input clauses
- learn   - when a clause is learned (or redundant clause is added)
- del     - when a clause is deleted.

The commands take a list of expressions of type Bool and the
last argument can optionally be of type Proof.
When the last argument is of type Proof it is provided as a hint
to justify the learned clause.

Proof hints can be checked using a self-contained proof
checker. The sat/smt/euf_proof_checker.h class provides
a plugin dispatcher for checkers.
It is instantiated with a checker for arithmetic lemmas,
so far for Farkas proofs.

Use example:
```
(set-option :sat.euf true)
(set-option :tactic.default_tactic smt)
(set-option :sat.smt.proof f.proof)
(declare-const x Int)
(declare-const y Int)
(declare-const z Int)
(declare-const u Int)
(assert (< x y))
(assert (< y z))
(assert (< z x))
(check-sat)
```

Run z3 on a file with above content.
Then run z3 on f.proof

```
(verified-smt)
(verified-smt)
(verified-smt)
(verified-farkas)
(verified-smt)
```
 2022-08-28 17:44:33 -07:00
Nikolaj Bjorner
458f417f44 move drat functionality into euf 2022-08-25 19:19:13 -07:00
Nikolaj Bjorner
1894c86ee0 virtual 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-08-25 18:27:30 -07:00
Nikolaj Bjorner
5f2387b3be revert some changes that coincide with breaking macos build 2022-08-25 11:22:35 -07:00
Nikolaj Bjorner
74c61f49b4 move std::function to header of sat-drat - alignment? 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-08-23 20:20:51 -07:00
Nikolaj Bjorner
ce1f3987d9 fix unsoundness in quantifier propagation #6116 and add initial lemma logging 2022-08-23 19:10:01 -07:00
Nuno Lopes
73a24ca0a9 remove '#include <iostream>' from headers and from unneeded places 
It's harmful to have iostream everywhere as it injects functions in the compiled files
 2022-06-17 14:10:19 +01:00
Nikolaj Bjorner
25ad5cb073 prepare ground for drup trim 
By not deleting justifications in base level unit literals it is possible for drup-trim to inspect the trail for dependencies - which clauses were used to derive a literal.
 2022-06-14 09:51:06 -07:00
Nikolaj Bjorner
04f94d818f fix #6091 2022-06-14 09:51:06 -07:00
Nikolaj Bjorner
470bf27d1d drat 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-06-11 09:15:32 -07:00
Nikolaj Bjorner
5db133f875 add a way to supress lambdas 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-06-10 14:35:20 -07:00
Nikolaj Bjorner
828850f298 prepare for trim 2022-06-09 10:08:57 -07:00
Nikolaj Bjorner
b629960afb proof format 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-06-06 07:18:33 -07:00
Nikolaj Bjorner
da3f31697b fix proof checking for bounds propagation 2022-05-30 10:18:16 -07:00
Nikolaj Bjorner
cb279fba2b fix sign for binary propagation hints 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-05-29 10:32:05 -07:00
Nikolaj Bjorner
bffa7ff2f6 add hint verification, combine bounds/farkas into one rule 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-05-29 10:12:05 -07:00
Nikolaj Bjorner
48701826f1 indent 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-05-28 13:57:03 -07:00
Nikolaj Bjorner
dd46224a1d use structured proof hints 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2022-05-28 09:37:41 -07:00
Nikolaj Bjorner
dcc01b874a prep for pragmas 2022-05-09 11:18:15 -07:00
Nikolaj Bjorner
6a9241ff0f #5429 2021-07-31 11:00:12 -07:00
Nikolaj Bjorner
f3f83d0445 #5429 2021-07-30 13:43:02 -07:00
Nikolaj Bjorner
4a6083836a call it data instead of c_ptr for approaching C++11 std::vector convention. 2021-04-13 18:17:35 -07:00
Nikolaj Bjorner
12198d13ac fix #4794 2020-12-02 12:24:35 -08:00
Nikolaj Bjorner
d6a5ef4343 add recfuns to Java #4820 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-11-25 12:25:20 -08:00
Nikolaj Bjorner
797f50e699 DRAT debugging updates 2020-11-22 15:38:57 -08:00
Nikolaj Bjorner
7c2bdfe3fb
delay internalization, relevancy (#4707) 
* delay evaluation

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* Update bv_solver.cpp

* delay internalize

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* compiler warnings

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* remove gc

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* add bv delay option

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-09-23 17:12:01 -07:00
Nikolaj Bjorner
549753845e
bv and gc of literals (#4692) 
* bv and gc of literals

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* overload

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* diseq

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* diseq

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-09-17 14:24:07 -07:00
Nikolaj Bjorner
545e1c0d31 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-09-15 15:40:15 -07:00
Nikolaj Bjorner
6a4261d1af debugging bv 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-09-15 15:37:31 -07:00
Nikolaj Bjorner
796e2fd9eb
arrays (#4684) 
* arrays

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* arrays

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* arrays

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* fill

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* update drat and fix euf bugs

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* const qualifiers

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* reorg ba

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* reorg

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* build warnings

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-09-13 19:29:59 -07:00
Nikolaj Bjorner
d02b0cde7a
running updates to bv_solver (#4674) 
* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* dbg

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* bv

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* drat and fresh

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* move ackerman functionality

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* debugability

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* towards debugability

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* missing file

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* na

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>

* remove csp

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-09-07 20:35:32 -07:00
Nikolaj Bjorner
d83d0a83d6 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-09-02 14:43:49 -07:00
Nikolaj Bjorner
7c2fe46eb7 build fix 2020-09-02 12:35:12 -07:00
Nikolaj Bjorner
116390833b prepare for theory plugins 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-09-02 10:42:18 -07:00
Nikolaj Bjorner
ed7d969366 elaborate on smt/drat format outline, expose euf mode as config 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-08-31 19:29:23 -07:00
Nikolaj Bjorner
4d41db3028 adding euf 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-08-31 14:36:16 -07:00
Nuno Lopes
23e6adcad3 fix a couple hundred deref-after-free bugs due to .c_str() on a temporary string 2020-07-11 20:24:45 +01:00
Nikolaj Bjorner
b1e6031230 partial parity fixes 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-02-11 03:35:25 -08:00
Nikolaj Bjorner
e0a41a18c3 add validation to aig_simplifier, start BIG-based masking 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-01-11 20:47:38 -08:00
Nikolaj Bjorner
90ca594835 remove unsound use of sat_big reduction 2019-12-20 22:01:18 -08:00
Nikolaj Bjorner
75a40d8f8e reorder fields, rename overload name clash 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-08-25 16:01:39 -03:00
Nikolaj Bjorner
a337a51374 fixes for #2513 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-08-23 23:29:24 +03:00
Nikolaj Bjorner
44b0b0148b deal with warnings 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-06-06 17:13:38 -07:00
Daniel Schemmel
c2ebbc9210
fix -Wsign-compare (len can never become negative anyway) 2019-02-23 10:57:41 +01:00
Nikolaj Bjorner
4c799c144a fix gc to not remove ternary clauses that are on assignment trail. This addresses issue with drat proofs that don't pass drat-trim due to deletion during gc, but use in conflicts 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-02-22 11:14:20 +01:00
Nikolaj Bjorner
2138a5232f fix #2142 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-02-19 10:16:50 +01:00
Nikolaj Bjorner
0aafa8b7ce optimize binary output 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-02-18 15:52:42 +01:00
Nikolaj Bjorner
22783a4bcb import more from csp 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-02-11 13:09:28 -08:00