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1706 commits

Author SHA1 Message Date
John Regehr
b7e1b1e118
get rid of threads in the scoped_timer thread pool prior to forking, on non-Windows (#4833) 
* on POSIX systems, fork() is dangerous in the presence of a thread
pool, because the child process inherits only the thread from the
parent that actually called fork().

this patch winds down the scoped_timer thread pool in preparation for
forking; workers will get freshly created again following the fork
call.
 2020-11-29 21:26:53 +00:00
Nikolaj Bjorner
797f50e699 DRAT debugging updates 2020-11-22 15:38:57 -08:00
Nikolaj Bjorner
1b768c9b3a fix #4805 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-11-20 12:11:38 -08:00
Nikolaj Bjorner
6506d33b35 Add GCD test 2020-11-20 11:12:54 -08:00
Nuno Lopes
40159a3a96 fix single-thread build 2020-11-19 21:46:32 +00:00
John Regehr
0fa88efc2b
scoped_timer: wait for timer thread before main thread continues (#4803) 2020-11-19 21:42:55 +00:00
Christoph M. Wintersteiger
eadf755628
Fix bonus subtraction in fp.rem. Fixes #4564. Fixes most of #2381. 2020-11-06 20:54:10 +00:00
Nikolaj Bjorner
ab199dedf9 debug arith/mbi 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-11-02 12:13:19 -08:00
Christoph M. Wintersteiger
c03c395267
Add missing assertion. Fixes #4642. 2020-10-30 14:09:51 +00:00
Nuno Lopes
1730bc7c7f fix #4763: shell not finishing before hard timeout 
The timer thread for the hard timeout was leaking and thus the thread only exited on timeout
 2020-10-30 10:01:09 +00:00
Nikolaj Bjorner
f354671465 add parameter for scenario from #4743 2020-10-30 01:14:34 -07:00
Nikolaj Bjorner
0de3149634 fix #4763 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-10-29 11:15:53 -07:00
Nikolaj Bjorner
8d76470a8a fixes to mostly solver arith/euf and backtracking scopes 2020-10-26 11:06:41 -07:00
Nikolaj Bjorner
1ee2ba2a9b mbqi 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-10-26 11:06:40 -07:00
Nuno Lopes
aaa1af5b28 fix debug build 2020-10-24 13:05:25 +01:00
Nuno Lopes
4e9035d4b9 cleanup thread pool of scoped_timer on memory finalize 
but keep it alive on Z3_memory_reset()
 2020-10-24 12:46:50 +01:00
Nuno Lopes
0213af3c61 replace remaining volatiles with atomic<> 
volatiles are now deprecated in recent C++
 2020-10-24 11:47:45 +01:00
Nikolaj Bjorner
a4aa87b6c9 revert to STL allocated memory to be orthogonal to memory manager behavior 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-10-22 12:12:32 -07:00
Nikolaj Bjorner
9bd7df7e19 add stub for finalize 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-10-22 11:07:05 -07:00
John Regehr
a95c35dadb
thread pool for scoped_timer (#4748) 
creating a fresh thread for every scoped_timer has significant overhead
in some use cases. this patch creates a persistent pool of worker threads
to do this job, resulting in 20-30% speedup of some alive2 jobs on a
large multicore
 2020-10-22 18:25:01 +01:00
Nuno Lopes
0c354c7aab obj_map: fix move constructor 2020-10-22 12:13:58 +01:00
Nikolaj Bjorner
72d407a49f
mbp (#4741) 
* adding dt-solver

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

* dt

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

* move mbp to self-contained module

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

* files

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

* Create CMakeLists.txt

* dt

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

* rename to bool_var2expr to indicate type class

* mbp

* na

* add projection

* na

* na

* na

* na

* na

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

* deps

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

* testing arith/q

* na

* newline for model printing

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-10-21 15:48:40 -07:00
Nikolaj Bjorner
44679d8f5b
arith_solver (#4733) 
* porting arithmetic solver

* integrating arithmetic

* lp

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>
 2020-10-16 10:49:46 -07:00
Nikolaj Bjorner
fa58a36b9f
model refactor (#4723) 
* refactor model fixing

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

* missing cond macro

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

* file

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

* file

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

* add macros dependency

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

* deps and debug

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

* add dependency to normal forms

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

* na

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

* build issues

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

* compile

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

* fix leal regression

* complete model fixer

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

* fold back private functionality to model_finder

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

* avoid duplicate fixed callbacks

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-10-05 14:13:05 -07:00
Nikolaj Bjorner
45103637ad fix build 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-09-29 14:34:24 -07:00
Nikolaj Bjorner
ee909b6374 random compiler nits 2020-09-29 13:43:51 -07:00
Nikolaj Bjorner
a216bee647 updated notes, fixes to dual solver 2020-09-29 13:43:50 -07:00
Nikolaj Bjorner
15f6124fbd remove files 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-09-29 13:43:50 -07:00
Nikolaj Bjorner
4562c07ceb redo egraph 2020-09-29 13:43:49 -07:00
Nikolaj Bjorner
367e5fdd52
delay internalize (#4714) 
* adding array solver

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

* use default in model construction

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

* debug delay internalization

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

* bv

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

* arrays

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

* get rid of implied values and bounds

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

* redo egraph

* remove out

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

* remove files

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-09-28 19:24:16 -07:00
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
b7ec4489a6
bv fixes and tuning (#4703) 
* heap size information

* bv tuning

* fix #4701

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

* throw on set-has-size #4700

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-09-21 19:54:53 -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
cfa7c733db
fixing #4670 (#4682) 
* fixing #4670

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

* init

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

* arrays

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

* 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>
 2020-09-10 04:35:11 -07:00
Nikolaj Bjorner
7327023c88
add variable replay, remove MacOS from Travis (#4681) 
* 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>

* replay variables created by solver

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

* remove old function

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

* fix scoped-limit

Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-09-08 05:57:07 -07:00
Margus Veanes
af54a79acc
fixing issue #4651 (#4666) 
* fixing issue #4651

* regression fix

* fix #4662

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

* na

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

* reenabled lift_ites_throttled with an additional filter, without the filter finding the model in report #4651 goes from .02s to 20s, also updated pretty printing of regexes to be more accurate

* removing temp testing variable

* Allow to skip System.loadLibrary() calls from Java Native class (#4667)

* using intended utility methods for sort detection

* adding ack/model

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

* add smt params dependency

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

* missing file

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

* deps

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

* order

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

* persist fields

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

* dbg build

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

* reset caches

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

* sr

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

* fix cmake build

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

* shuffle dependencies

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

* warnings /errors

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

* update include

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

* missing cmakelists

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

* update cmake

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

* add depend

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

* add depend

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

* virtual method

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

* path

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

* move parameters from ast/rewriter to params

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

* move fpa

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

* fix warnings

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

* remove pragma

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

* dbg

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

* updated sat_smt

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

* na

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

* fix #4651

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

* encoding options #4665

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

* expose name inclusion as optional

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

* fix misc issues around #4661 introduced when adding lazy push/pop to selected theories

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

* remove lazy push from theory_lra

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

* na

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

* fix dotnet build

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

* na

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

* release nodes

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

* free memory in egraph

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

* avoid duplicate class names frame in sat_scc and sat_smt

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

* adding euf

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

* elaborate on smt/drat format outline, expose euf mode as config

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

* mk-var during copy

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

* move theory_var_list into id_var_list and utilities from smt-enode into it, prepare for theory variables in egraph

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

* with bounded

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

* na

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

* Remove duplicate binary condition. Fixes #4668.

* butterfly effect on fp?

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

* prepare for theory plugins

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

* file

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

* build fix

* remove SMTFD

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

* na

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

* na

* 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>

* SMTFD is back (#4676)

* fixing issue #4651

* regression fix

* reenabled lift_ites_throttled with an additional filter, without the filter finding the model in report #4651 goes from .02s to 20s, also updated pretty printing of regexes to be more accurate

* removing temp testing variable

* using intended utility methods for sort detection

* misc edits related to nonground regexes

* bug fix of state id off by 1 calculation error and improved pretty printing with regex tooltip generated in dgml state graph

* removed unused method declaration

* improved id to regex value map info in generated dgml

* reorgd callback function for state pretty printer

* updated some comments

Co-authored-by: Nikolaj Bjorner <nbjorner@microsoft.com>
Co-authored-by: Sergey Vladimirov <vlsergey@gmail.com>
Co-authored-by: Christoph M. Wintersteiger <cwinter@microsoft.com>
Co-authored-by: Arie Gurfinkel <arie.gurfinkel@gmail.com>
 2020-09-08 04:13:18 -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
Christoph M. Wintersteiger
527bf72d42
Remove duplicate binary condition. Fixes #4668. 2020-09-01 15:22:01 +00:00
Nikolaj Bjorner
ecddaeae66 na 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-09-01 07:15:13 -07:00
Nikolaj Bjorner
d4e92d4aca move theory_var_list into id_var_list and utilities from smt-enode into it, prepare for theory variables in egraph 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-09-01 04:26:31 -07:00
Nikolaj Bjorner
4d41db3028 adding euf 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-08-31 14:36:16 -07:00
Nikolaj Bjorner
4244ce4aad adding ack/model 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-08-28 12:55:47 -07:00
Nuno Lopes
a7b51d04cd remove unused file 2020-08-25 15:10:41 +01:00
Arie Gurfinkel
22b5daf85e
fix rlimit for clang-10 (#4658) 2020-08-21 10:34:10 -07:00
Nikolaj Bjorner
ecb43ccca2 update smt logging format to follow SAT solver 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-08-20 20:00:20 -07:00
Nikolaj Bjorner
2611484525 fix #4642 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-08-17 08:35:15 -07:00
Nikolaj Bjorner
f0308436b5 use lazy scopes to avoid push/pop overhead 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-08-17 08:07:06 -07:00
Caleb Stanford
2c02264a94
Regex solver updates (#4636) 
* std::cout debugging statements

* comment out std::cout debugging as this is now a shared fork

* convert std::cout to TRACE statements for seq_rewriter and seq_regex

* add cases to min_length and max_length for regexes

* bug fix

* update min_length and max_length functions for REs

* initial pass on simplifying derivative normal forms by eliminating redundant predicates locally

* add seq_regex_brief trace statements

* working on debugging ref count issue

* fix ref count bug and convert trace statements to seq_regex_brief

* add compact tracing for cache hits/misses

* seq_regex fix cache hit/miss tracing and wrapper around is_nullable

* minor

* label and disable more experimental changes for testing

* minor documentation / tracing

* a few more @EXP annotations

* dead state elimination skeleton code

* progress on dead state elimination

* more progress on dead state elimination

* refactor dead state class to separate self-contained state_graph class

* finish factoring state_graph to only work with unsigned values, and implement separate functionality for expr* logic

* implement get_all_derivatives, add debug tracing

* trace statements for debugging is_nullable loop bug

* fix is_nullable loop bug

* comment out local nullable change and mark experimental

* pretty printing for state_graph

* rewrite state graph to remove the fragile assumption that all edges from a state are added at a time

* start of general cycle detection check + fix some comments

* implement full cycle detection procedure

* normalize derivative conditions to form 'ele <= a'

* order derivative conditions by character code

* fix confusing names m_to and m_from

* assign increasing state IDs from 1 instead of using get_id on AST node

* remove elim_condition call in get_dall_derivatives

* use u_map instead of uint_map to avoid memory leak

* remove unnecessary call to is_ground

* debugging

* small improvements to seq_regex_brief tracing

* fix bug on evil2 example

* save work

* new propagate code

* work in progress on using same seq sort for deriv calls

* avoid re-computing derivatives: use same head var for every derivative call

* use min_length on regexes to prune search

* simple implementation of can_be_in_cycle using rank function idea

* add a disabled experimental change

* minor cleanup comments, etc.

* seq_rewriter cleanup for PR

* typo noticed by Nikolaj

* move state graph to util/state_graph

* re-add accidentally removed line

* clean up seq_regex code removing obsolete functions and comments

* a few more cleanup items

* oops, missed merge change to fix compilation

* disabled change to lift unions to the top level and treat them seperately in seq_regex solver

* added get_overapprox_regex to over-approximate regex membership constraints

* replace calls to is_epsilon with a centrally available method in seq_decl_plugin

* simplifications and modifications in get_overapprox_regex and related

* added approximation support for sequence expressions that use ite

* removed is_app check that was redundant

* tweak differences with upstream

* rewrite derivative leaves

* enable Antimorov-style derivatives via lifting unions in the solver

* TODO placeholders for outputting state graph

* change order in seq_regex propagate_in_re

* implement a more restricted form of Antimorov derivatives via a special op code to indicate lifting unions

* minor

* new Antimorov optimizations based on BDD compatibility checking

* seq regex tracing for # of derivatives

* fix get_cofactors (currently this fix is buggy)

* partially revert get_cofactors buggy change

* re-implement get_cofactors to more efficiently explore nodes in the derivative expression

* dgml generation for state graph

* fix release build

* improved dgml output

* bug fixes in dgml generation

* dot output support for state_graph and moved dgml and dot output under CASSERT

* updated tracing of what regex corresponds to what state id with /tr:state_graph

* clean up & document Antimorov derivative support

* remove op cache tracing

* remove re_rank experimental idea

* small fix

* fix Antimorov derivative (important change for the good performance)

* remove unused and unnecessary code

* implemented simpler efficient get_cofactors alternative mk_deriv_accept

* simplifications in propagate_accept, and trace unusual cases

* document the various seq_regex tracing & debugging command-line options

* fix debug build (broken tracing)

* guard eager Antimorov lifting for possible disabling

* fix bug in propagate_accept Rule 1

* disable eager version of Antimorov lifting for performance reasons

* remove some remaining obsolete comments

Co-authored-by: calebstanford-msr <t-casta@microsoft.com>
Co-authored-by: Margus Veanes <margus@microsoft.com>
 2020-08-13 12:47:36 -07:00
Nikolaj Bjorner
c63ad2e834 enable ranges for bit-vectors 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
 2020-08-13 10:53:37 -07:00