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Author SHA1 Message Date
Simon Cruanes
fade033458 refactor: get SAT properly again on some problems 2018-05-20 14:30:36 -05:00
Simon Cruanes
4a39192846 refactor(sat): wip: simpler clauses 2018-05-20 13:38:39 -05:00
Simon Cruanes
f69d5cd9f1 refactor(sat): wip: simplify SAT solver 2018-05-20 13:09:51 -05:00
Simon Cruanes
5860612cd9 wip: refactor SAT solver 2018-05-11 20:33:36 -05:00
Simon Cruanes
3968688a35 large refactor of SAT solver, all internal code in Internal now 2018-05-09 22:47:21 -05:00
Simon Cruanes
36df2d952b delay addition of clauses to internal sat solver until solve() 2018-05-09 21:09:55 -05:00
Simon Cruanes
441ca61465 remove annoying spelling mistake 2018-05-09 19:58:04 -05:00
Simon Cruanes
c44e9bc16d remove dead library 2018-05-09 19:51:45 -05:00
Simon Cruanes
70749155bf cleanup of unused sublibrary 2018-05-09 19:34:53 -05:00
Simon Cruanes
4628bff514 remove some files 2018-05-09 19:30:44 -05:00
Simon Cruanes
24bbe97ceb rename to sidekick 2018-05-09 19:28:41 -05:00
Simon Cruanes
eb40cfa5e3 wip 2018-05-09 18:14:06 -05:00
Simon Cruanes
d19b798ee9 add ability to parse and process dimacs files 2018-04-11 19:57:51 -05:00
Simon Cruanes
d47d619265 add dimacs sub-library 2018-04-11 19:57:23 -05:00
Simon Cruanes
c82099731d remove todo file 2018-04-11 09:03:09 -05:00
Simon Cruanes
da77d3ab3b add todo 2018-04-11 09:02:36 -05:00
Simon Cruanes
4e215e3d01 fix(cc): fix bugs in congruence closure and explanations 
also, simplify API for backtracking
 2018-04-02 21:10:49 -05:00
Simon Cruanes
bc1a573407 chore: better error printing 2018-04-02 21:07:54 -05:00
Simon Cruanes
543f8a5a99 add distinct handling to congruence closure 2018-02-23 00:44:23 -06:00
Simon Cruanes
dac3378198 improve SAT solver messages, remove semantic reason 2018-02-23 00:43:56 -06:00
Simon Cruanes
f21d373620 minor refactoring, removing useless field in nodes 2018-02-22 21:19:54 -06:00
Simon Cruanes
77af72e739 fix bugs in SAT solver 
- new atoms must always be added to heap if not present
- fix slices dimensions at creation, do not depend on mutable indices
 2018-02-19 21:32:13 -06:00
Simon Cruanes
20a85a1f35 th_bool: fix polarity issues 2018-02-19 21:27:15 -06:00
Simon Cruanes
2be10fb907 first implementation of on-the-fly Tseitin transformation 2018-02-19 20:48:02 -06:00
Simon Cruanes
d7fc5cf29d fix problems with slices in the SAT core 2018-02-19 20:47:43 -06:00
Simon Cruanes
d53bd8671a lower overhead for adding clauses to the SAT solver 
- directly build clauses from arrays
- use IArrays rather than lists, when possible
- pushing local/persistent clauses is now direct, no more queues
 2018-02-19 19:47:03 -06:00
Simon Cruanes
582f1aad18 improve IArray 2018-02-19 19:46:08 -06:00
Simon Cruanes
57591ba042 better normalization of terms in Th_bool 2018-02-17 15:33:32 -06:00
Simon Cruanes
9e52183b45 reexport more types in Term 2018-02-17 15:33:24 -06:00
Simon Cruanes
e1717f3afe wip: heavy refactoring of SAT solver, making most things backtrackable 
the idea is that most changes should be undone upon backtracking,
using the global `on_backtrack` command and `at_level_0` to
know when something is going to be permanent.

In particular, should be (possibly optionally) undone on backtracking:
- addition of clauses (clauses being attached)
- propagations of atoms
- addition of literals to the heap
- internalization of literals (tbd)

clauses should also be added immediately, not pushed into a queue
 2018-02-11 22:58:24 -06:00
Simon Cruanes
fb7e422413 some improvements to Vec 2018-02-11 22:40:45 -06:00
Simon Cruanes
bc562242c9 add Heap.remove 2018-02-11 21:52:31 -06:00
Simon Cruanes
dd708b1583 todo 2018-02-11 20:42:55 -06:00
Simon Cruanes
2fcef323b3 move back process to dagon_smtlib 2018-02-11 10:47:47 -06:00
Simon Cruanes
98934ab74f move boolean builtins to a sublibrary 2018-02-08 23:19:35 -06:00
Simon Cruanes
7b44146102 make it compile! with stubs for conversion parse ast -> ast -> term 2018-02-08 22:19:32 -06:00
Simon Cruanes
f52883f059 update tests 2018-02-08 22:19:28 -06:00
Simon Cruanes
d73684902f wip: have a proper smtlib parser 2018-02-05 23:09:29 -06:00
Simon Cruanes
221ed7dcdb continue large refactoring, progress in theory combination 
- first draft of theory combination
- theory interface
- have the project compile
 2018-02-01 22:53:06 -06:00
Simon Cruanes
3377d05383 add Shostak solving in CC 2018-01-30 22:19:05 -06:00
Simon Cruanes
50fe488dcb refactor types for terms and congruence closure 
- terms are extensible
- explanations have a custom case, shaped as a term
- remove distinction repr/node in Equiv_class, for simplicity
- make propositional connectives n-ary
 2018-01-30 21:55:37 -06:00
Simon Cruanes
2aab43f95d comments and doc 2018-01-29 23:38:24 -06:00
Simon Cruanes
3e50a3fc5d some updates to core lib 2018-01-26 21:32:21 -06:00
Simon Cruanes
1d5c1c187c wip: basic SMT infrastructure 
- basic types, including terms and nodes (internalized terms)
- congruence closure
- utils
 2018-01-25 23:32:36 -06:00
Simon Cruanes
e5e147eaed draft of design doc for the CC 2018-01-23 23:19:10 -06:00
Simon Cruanes
9e3484d2b3 update readme 2018-01-22 22:14:01 -06:00
Simon Cruanes
ac396e8cf5 rename to cdcl 2018-01-22 22:09:47 -06:00
Simon Cruanes
8c8209c08c large refactoring to keep only a simpler, easier CDCL(T) interface 
- only one functor to instantiate
- explicit state that is carried around
- remove minismt stuff
 2018-01-22 21:52:06 -06:00
Simon Cruanes
7324647fb1 doc 2018-01-03 22:08:55 +01:00
Simon Cruanes
53cc8b35a0 more controled API for Res 2018-01-03 22:07:40 +01:00