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Code Activity
1455 commits 24 branches 48 tags 158 MiB
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165 commits

Author SHA1 Message Date
Nikolaj Bjorner
72e82532b2 enabling upper bound test 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-10-31 09:43:15 -07:00
Nikolaj Bjorner
5106c74b3e preparing for inf extension of arithmetic 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-10-31 02:13:24 -07:00
Nikolaj Bjorner
0b65aa83e8 preparing for inf extension of arithmetic 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-10-31 02:02:37 -07:00
Anh-Dung Phan
a3a7af84c5 Minor updates 2013-10-30 18:25:39 -07:00
Anh-Dung Phan
01c3dd779b Add visualization of spanning trees 2013-10-30 16:52:37 -07:00
Anh-Dung Phan
49aba844b8 Refactor network_flow 
Use a template method for pretty printing
 2013-10-30 10:04:56 -07:00
Anh-Dung Phan
a6e103dd36 Make a few variables private 2013-10-30 06:30:51 +01:00
Nikolaj Bjorner
bc44bcad10 push blocking code to optimizer context 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-10-29 20:26:54 -07:00
Anh-Dung Phan
b67d333cf9 First complete version of Network Simplex 2013-10-29 18:32:10 -07:00
Anh-Dung Phan
e715ccbc98 Minor updates 2013-10-29 15:49:53 -07:00
Anh-Dung Phan
905f230b8f Add pretty printing for network_flow 
Reuse the original graph as much as possible
 2013-10-29 14:20:29 -07:00
Anh-Dung Phan
906bbb4eeb Update Network Simplex implementation 2013-10-28 18:29:14 -07:00
Nikolaj Bjorner
72c3473400 cleanup 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-10-26 20:48:19 +08:00
Nikolaj Bjorner
9903c722af adding review notes to code 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-10-26 16:24:21 +08:00
Nikolaj Bjorner
3852b3a753 working on internalizer 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-10-26 15:03:39 +08:00
Anh-Dung Phan
3d943bf70d Fix a mistake in previous commit causing imcompilable code 
Also correct my alias
 2013-10-26 05:22:52 +02:00
Anh-Dung Phan
532c345fd1 Reduce difference logic solver to min cost flow 2013-10-25 17:42:03 -07:00
Anh-Dung Phan
ebed5fa037 WIP on min cost flow problem 
Remarks:
1. Follow the template structure of diff_logic.h
2. Try to reuse dl_graph<Ext> with some ready-to-use graph algorithms
3. Need to add 'explanation' to 'GExt' in order to instantiate
dl_graph<_>
 2013-10-24 17:58:15 -07:00
Phan Anh Dung
be81e77c70 Some progress on Network Simplex 2013-10-24 09:50:12 +02:00
Phan Anh Dung
1ff373072d Add objective functions to difference logic solver 2013-10-24 08:57:21 +02:00
Nikolaj Bjorner
7c8fbbb06a fixing bug with optimization 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-10-24 12:03:05 +08:00
Nikolaj Bjorner
11010086be fixing bug with optimization 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-10-24 11:57:30 +08:00
Anh-Dung Phan
6919f335a1 Sketch a skeleton of Difference Logic optimizer 2013-10-22 16:28:03 -07:00
Anh-Dung Phan
3441fc2942 A few changes based on previous reviews 
Tested the optimization procedure with:
- unbounded objectives
- bounded with rational solutions
- bounded with irrational solutions
 2013-10-21 17:25:34 -07:00
Nikolaj Bjorner
3996f58a8e tidy & todo notes 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-10-19 12:22:56 -07:00
Phan Anh Dung
53f78f7d19 Replace the use of optional<rational> by inf_eps_rational<rational> 
Also handle composite objectives correctly.
 2013-10-19 06:03:21 +02:00
Anh-Dung Phan
a44044fb15 A rudimentary version of MathSAT optimization 
Remarks:
(1) The core procedure accepts maximization only
(2) Add lazy initialization to min_maximize_cmd
(3) The procedure isn't working with composite objective yet.
 2013-10-18 18:00:24 -07:00
Nikolaj Bjorner
898609a3ef cleanup macro usage 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-10-17 20:50:33 -07:00
Nikolaj Bjorner
cfedbe3dfd add opt_solver layer 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-10-17 17:33:43 -07:00
Christoph M. Wintersteiger
3d910028bf fixed potential performance problem with fully interpreted sorts in the quantifier instantiation. 
Signed-off-by: Christoph M. Wintersteiger <cwinter@microsoft.com>
 2013-09-27 16:55:05 +01:00
Nikolaj Bjorner
2e7f5303eb address incompleteness bug in axiomatization of int2bv 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-09-23 04:56:38 +03:00
Nikolaj Bjorner
fd1f4b9191 fix bugs reported by Anvesh 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-09-23 04:07:08 +03:00
Nikolaj Bjorner
5be4365b47 redo edit 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-09-15 16:53:52 -07:00
Nikolaj Bjorner
c54929e59f cycle through domain size before giving up 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-09-15 04:52:21 -07:00
Nikolaj Bjorner
21b27cd2d1 patching crash in data-type factory when fresh values are not produced 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-09-15 04:37:05 -07:00
Nikolaj Bjorner
419f99c329 fix bug found by Ethan: fresh values for bit-vectors loops if the domain of bit-vectors is truly small 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-09-13 15:30:56 -07:00
Nikolaj Bjorner
9e61820125 re-organizing muz 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-08-28 21:49:53 -07:00
Nikolaj Bjorner
6c5f7741b2 more on polynorm 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-08-14 11:55:23 -07:00
Nikolaj Bjorner
d9e3881560 Merge branch 'unstable' of https://git01.codeplex.com/z3 into unstable 2013-06-27 12:00:09 -05:00
Nikolaj Bjorner
619bd91ddb fix bug in ctx-solver-simplify reported @ http://z3.codeplex.com/workitem/51 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-06-27 11:59:40 -05:00
Leonardo de Moura
544dfde454 Merge branch 'unstable' of https://git01.codeplex.com/z3 into unstable 2013-06-27 09:30:33 -07:00
Leonardo de Moura
5b7201a911 Fix minor problem 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-06-27 09:30:25 -07:00
Nikolaj Bjorner
324dc5869d fix substitution bug in qe, working on boogie trace 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-06-25 13:07:28 -05:00
Leonardo de Moura
185f125f7a Fix problem reported at http://stackoverflow.com/questions/17215640/getting-concrete-values-from-a-model-containing-array-ext 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
 2013-06-20 17:48:43 -07:00
Nikolaj Bjorner
56bfc06c4f fix reference count bugs in overflow/underflow APIs for bit-vectors 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-06-02 20:55:15 -07:00
Nikolaj Bjorner
d569027e36 fix reference count bugs in overflow/underflow APIs for bit-vectors 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-06-02 20:54:01 -07:00
Nikolaj Bjorner
76a269c85a clean up parity computation 
Signed-off-by: unknown <nbjorner@NIKOLAJ-ZEN.redmond.corp.microsoft.com>
 2013-06-01 17:14:18 -07:00
Nikolaj Bjorner
c0895e5548 remove hassel table from unstable: does not compile under other plantforms 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-05-31 17:48:19 -07:00
Nikolaj Bjorner
56dedec740 fix build break include uint_set.h 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-05-18 10:02:53 -07:00
Nikolaj Bjorner
ef2a9994a9 fix UTVPI model generation 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2013-05-16 19:58:14 -07:00