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80 commits

Author SHA1 Message Date
Nikolaj Bjorner 107981f099 update proof formats for new core 
- update proof format for quantifier instantiation to track original literals
- update proof replay tools with ability to extract proof object

The formats and features are subject to heavy revisions.

Example
```
(set-option :sat.euf true)
(set-option :sat.smt.proof eufproof.smt2)
(declare-fun f (Int) Int)
(declare-const x Int)
(assert (or (= (f (f (f x))) x) (= (f (f x)) x)))
(assert (not (= (f (f (f (f (f (f x)))))) x)))
(check-sat)
```

eufproof.smt2 is:
```
(declare-fun x () Int)
(declare-fun f (Int) Int)
(define-const $24 Int (f x))
(define-const $25 Int (f $24))
(define-const $26 Int (f $25))
(define-const $27 Bool (= $26 x))
(define-const $28 Bool (= $25 x))
(assume $27 $28)
(define-const $30 Int (f $26))
(define-const $31 Int (f $30))
(define-const $32 Int (f $31))
(define-const $33 Bool (= $32 x))
(assume (not $33))
(declare-fun rup () Proof)
(infer (not $33) rup)
(declare-fun euf (Bool Bool Proof Proof Proof Proof) Proof)
(declare-fun cc (Bool) Proof)
(define-const $42 Bool (= $32 $30))
(define-const $43 Proof (cc $42))
(define-const $40 Bool (= $31 $24))
(define-const $41 Proof (cc $40))
(define-const $38 Bool (= $30 $25))
(define-const $39 Proof (cc $38))
(define-const $36 Bool (= $24 $26))
(define-const $37 Proof (cc $36))
(define-const $34 Bool (not $33))
(define-const $44 Proof (euf $34 $28 $37 $39 $41 $43))
(infer (not $28) $33 $44)
(infer (not $28) rup)
(infer $27 rup)
(declare-fun euf (Bool Bool Proof Proof Proof) Proof)
(define-const $49 Bool (= $32 $26))
(define-const $50 Proof (cc $49))
(define-const $47 Bool (= $31 $25))
(define-const $48 Proof (cc $47))
(define-const $45 Bool (= $24 $30))
(define-const $46 Proof (cc $45))
(define-const $51 Proof (euf $34 $27 $46 $48 $50))
(infer $33 $51)
(infer rup)
```

Example of inspecting proof from Python:

```
from z3 import *

def parse(file):
    s = Solver()
    set_option("solver.proof.save", True)
    set_option("solver.proof.check", False)
    s.from_file(file)
    for step in s.proof().children():
        print(step)

parse("../eufproof.smt2")
```

Proof checking (self-validation) is on by default.
Proof saving is off by default.

You can use the proof logs and the proof terms to retrieve quantifier instantiations from the new core.

The self-checker contains a few built-in tuned checkers but falls back to self-checking inferred clauses using SMT.
 2022-09-28 10:40:43 -07:00
Bruce Mitchener 5d0dea05aa
Remove empty leaf destructors. (#6211) 2022-07-30 10:07:03 +01:00
Nikolaj Bjorner f20db3e644 allow for toggling proof and core mode until the first assertion. 2022-07-02 09:31:36 -07:00
Nikolaj Bjorner 011c1b2dd2 remove refs to bare_str 2022-04-09 12:06:27 +02:00
Nuno Lopes 43f7636826 remove some copies/moves 2022-03-09 12:46:41 +00:00
Nikolaj Bjorner a44a46a514 fix #5745 2021-12-31 16:41:51 -08:00
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 549ef0e052 fix typos #4573 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-07-20 10:22:57 -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 4e81085292 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-01-21 10:29:42 -06:00
Nikolaj Bjorner c816d45a7d share some equalities 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-01-20 16:22:38 -06:00
Nikolaj Bjorner 9179deb746 add get-interpolant command 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-01-20 16:22:38 -06:00
Nikolaj Bjorner 18b8089a1e Revert "remove unused random seed parameter on cmd_context" 
This reverts commit e2a9cb80e2.
 2019-10-29 11:05:50 -07:00
Nikolaj Bjorner e2a9cb80e2 remove unused random seed parameter on cmd_context 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-10-22 08:42:18 -07:00
Nikolaj Bjorner 724a42b6f2 fix #2643 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-10-18 09:48:55 -07:00
Nikolaj Bjorner f128398bf9 add clause proof module, small improvements to bapa 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-05-30 15:57:19 -07:00
Nikolaj Bjorner cdc89b6193 add get-info :rlimit option to cmd-context to facilitate timeout based repros 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-03-24 12:57:08 -07:00
Nikolaj Bjorner 54a125063b remove produce interpolants 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2019-01-14 15:00:25 -08:00
Bruce Mitchener e570940662 Prefer using empty rather than size comparisons. 2018-11-27 21:42:04 +07:00
Nikolaj Bjorner e391416855 fix include path for z3_version.h 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-09-21 20:30:50 -07:00
Nuno Lopes cef17c22a1 remove some allocs from exceptions 2018-07-02 17:08:02 +01:00
Nikolaj Bjorner 335d672bf1 fix #1675, regression in core processing in maxres 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-19 23:23:19 -07:00
Nikolaj Bjorner 74621e0b7d first eufi example running 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-06-14 16:08:52 -07:00
Nikolaj Bjorner c963f6f2df merge with master 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-05-23 08:02:16 -07:00
Nikolaj Bjorner 50c93d1ad4 merge with 4.7.1 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-05-22 17:10:36 -07:00
Daniel Schemmel f02d031d11
As of GCC8, the throw by value, catch by reference idiom is enforced via -Wcatch-value 2018-05-19 04:39:36 +02:00
Nikolaj Bjorner f525f43e43 merge 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-04-30 09:30:43 -07:00
Nikolaj Bjorner 5dbba8bd53 fix #1599. fix #1600 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-04-27 17:48:04 +02:00
Nikolaj Bjorner c513f3ca09 merge with master 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-03-25 14:57:01 -07:00
Bruce Mitchener 76eb7b9ede Use nullptr. 2018-02-12 14:05:55 +07:00
Bruce Mitchener b7d1753843 Use override rather than virtual. 2018-02-09 21:19:27 +07:00
Nikolaj Bjorner 354c16454a fix bug in translation of pbeq into sat 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-02-03 22:19:25 -08:00
Bruce Mitchener ae8027e594 Fix typos. 2018-02-01 19:39:43 +07:00
Nikolaj Bjorner 7b8101c502 fix bugs related to model-converter 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2018-01-17 12:25:24 -08:00
Simon Cruanes ed526b808d add parameter to specify the file into which dot proofs are to be printed 2017-10-24 10:16:56 +02:00
Simon Cruanes d630838b38 add a basic printer into graphviz (http://graphviz.org/) for proofs 
- proofs are output into file `proof.dot` if `(get-proof-graph)` is
  in the input
- use `dot -Txlib proof.dot` to see the proof
- use `dot -Tsvg proof.dot` to get a svg file
 2017-10-24 09:41:38 +02:00
Nikolaj Bjorner 06087c17be support for legacy datatype test 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-09-05 10:28:11 -07:00
Dan Liew a2d7b43554 Update header includes to be relative to src/ directory. 2017-08-17 18:26:53 +01:00
Nikolaj Bjorner 082936bca6 enable overloading resolution on define-fun declarations, fix #1199 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-08-08 09:21:06 +02:00
Nikolaj Bjorner 2b82fd5d0c updated include directives 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-08-01 10:51:47 -07:00
Nikolaj Bjorner b19f94ae5b make include paths uniformly use path relative to src. #534 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-07-31 13:24:11 -07:00
Christoph M. Wintersteiger a0b25147d9 Fix for the fix for #1062. 2017-06-20 14:48:03 +01:00
Christoph M. Wintersteiger ab21caf55f Reverted fix for quoted echo strings when smtlib2_compliant=false. Kindly reported by Armael Gueneau. Fixes #1062. 2017-06-20 14:39:22 +01:00
Christoph M. Wintersteiger 7b97688302 Whitespace, typo. 2017-06-20 14:36:40 +01:00
Nikolaj Bjorner 6bce173248 properly quote symbols #1061 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-06-12 18:35:02 -07:00
Nikolaj Bjorner f0fa439c48 escaping names in get-assignment #1061 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-06-11 17:17:47 -07:00
Nikolaj Bjorner f44a3e1bbc print_core as a function 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-06-10 10:18:07 -07:00
Nikolaj Bjorner d5f646929e print success #1068 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-06-10 09:16:36 -07:00
Nikolaj Bjorner 668bad6121 print success after reset assertions #1057 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-06-04 11:04:54 -07:00
Nikolaj Bjorner 4cbf938cf3 enable get-unsat-assumptions command per request in #1048 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2017-05-29 16:26:22 -07:00