Execution Chart

We display below the execution chart for this examination (boot time has been removed).

Trace from the execution

Formatting '/mnt/tpsp/fkordon/mcc2024-input.r516-tajo-171654446900348.qcow2', fmt=qcow2 size=4294967296 backing_file='/mnt/tpsp/fkordon/mcc2024-input.qcow2' backing_fmt='qcow2' encryption=off cluster_size=65536 lazy_refcounts=off
Waiting for the VM to be ready (probing ssh)
........................
=====================================================================
Generated by BenchKit 2-5568
Executing tool ltsminxred
Input is PolyORBLF-PT-S06J06T06, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r516-tajo-171654446900348
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 15M
-rw-r--r-- 1 mcc users 20K Apr 11 17:21 CTLCardinality.txt
-rw-r--r-- 1 mcc users 112K Apr 11 17:21 CTLCardinality.xml
-rw-r--r-- 1 mcc users 340K Apr 11 17:18 CTLFireability.txt
-rw-r--r-- 1 mcc users 1.5M Apr 11 17:18 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 18 16:43 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.3K May 18 16:43 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 9.1K Apr 23 07:44 LTLCardinality.txt
-rw-r--r-- 1 mcc users 41K Apr 23 07:44 LTLCardinality.xml
-rw-r--r-- 1 mcc users 7.8K Apr 23 07:44 LTLFireability.txt
-rw-r--r-- 1 mcc users 38K Apr 23 07:44 LTLFireability.xml
-rw-r--r-- 1 mcc users 28K Apr 11 17:53 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 149K Apr 11 17:53 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 374K Apr 11 17:50 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 1.7M Apr 11 17:50 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 2.4K Apr 23 07:44 UpperBounds.txt
-rw-r--r-- 1 mcc users 4.9K Apr 23 07:44 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 May 18 16:43 equiv_col
-rw-r--r-- 1 mcc users 10 May 18 16:43 instance
-rw-r--r-- 1 mcc users 6 May 18 16:43 iscolored
-rw-r--r-- 1 mcc users 11M May 18 16:43 model.pnml

--------------------
content from stdout:

=== Data for post analysis generated by BenchKit (invocation template)

The expected result is a vector of booleans
BOOL_VECTOR

here is the order used to build the result vector(from text file)
FORMULA_NAME PolyORBLF-PT-S06J06T06-LTLFireability-00
FORMULA_NAME PolyORBLF-PT-S06J06T06-LTLFireability-01
FORMULA_NAME PolyORBLF-PT-S06J06T06-LTLFireability-02
FORMULA_NAME PolyORBLF-PT-S06J06T06-LTLFireability-03
FORMULA_NAME PolyORBLF-PT-S06J06T06-LTLFireability-04
FORMULA_NAME PolyORBLF-PT-S06J06T06-LTLFireability-05
FORMULA_NAME PolyORBLF-PT-S06J06T06-LTLFireability-06
FORMULA_NAME PolyORBLF-PT-S06J06T06-LTLFireability-07
FORMULA_NAME PolyORBLF-PT-S06J06T06-LTLFireability-08
FORMULA_NAME PolyORBLF-PT-S06J06T06-LTLFireability-09
FORMULA_NAME PolyORBLF-PT-S06J06T06-LTLFireability-10
FORMULA_NAME PolyORBLF-PT-S06J06T06-LTLFireability-11
FORMULA_NAME PolyORBLF-PT-S06J06T06-LTLFireability-12
FORMULA_NAME PolyORBLF-PT-S06J06T06-LTLFireability-13
FORMULA_NAME PolyORBLF-PT-S06J06T06-LTLFireability-14
FORMULA_NAME PolyORBLF-PT-S06J06T06-LTLFireability-15

=== Now, execution of the tool begins

BK_START 1717256272167

Invoking MCC driver with
BK_TOOL=ltsminxred
BK_EXAMINATION=LTLFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=PolyORBLF-PT-S06J06T06
BK_MEMORY_CONFINEMENT=16384
Applying reductions before tool ltsmin
Invoking reducer
Running Version 202405141337
[2024-06-01 15:37:53] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, LTLFireability, -timeout, 360, -rebuildPNML]
[2024-06-01 15:37:53] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2024-06-01 15:37:54] [INFO ] Load time of PNML (sax parser for PT used): 672 ms
[2024-06-01 15:37:54] [INFO ] Transformed 700 places.
[2024-06-01 15:37:54] [INFO ] Transformed 10740 transitions.
[2024-06-01 15:37:54] [INFO ] Parsed PT model containing 700 places and 10740 transitions and 89778 arcs in 890 ms.
Parsed 16 properties from file /home/mcc/execution/LTLFireability.xml in 16 ms.
Working with output stream class java.io.PrintStream
Initial state reduction rules removed 5 formulas.
Ensure Unique test removed 8070 transitions
Reduce redundant transitions removed 8070 transitions.
FORMULA PolyORBLF-PT-S06J06T06-LTLFireability-05 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA PolyORBLF-PT-S06J06T06-LTLFireability-06 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA PolyORBLF-PT-S06J06T06-LTLFireability-07 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA PolyORBLF-PT-S06J06T06-LTLFireability-08 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA PolyORBLF-PT-S06J06T06-LTLFireability-09 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Support contains 105 out of 700 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 700/700 places, 2670/2670 transitions.
Ensure Unique test removed 6 places
Iterating post reduction 0 with 6 rules applied. Total rules applied 6 place count 694 transition count 2670
Discarding 5 places :
Symmetric choice reduction at 1 with 5 rule applications. Total rules 11 place count 689 transition count 2665
Iterating global reduction 1 with 5 rules applied. Total rules applied 16 place count 689 transition count 2665
Discarding 4 places :
Symmetric choice reduction at 1 with 4 rule applications. Total rules 20 place count 685 transition count 2661
Iterating global reduction 1 with 4 rules applied. Total rules applied 24 place count 685 transition count 2661
Applied a total of 24 rules in 354 ms. Remains 685 /700 variables (removed 15) and now considering 2661/2670 (removed 9) transitions.
Running 2655 sub problems to find dead transitions.
[2024-06-01 15:37:55] [INFO ] Flow matrix only has 2625 transitions (discarded 36 similar events)
// Phase 1: matrix 2625 rows 685 cols
[2024-06-01 15:37:55] [INFO ] Computed 52 invariants in 197 ms
[2024-06-01 15:37:55] [INFO ] State equation strengthened by 168 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/679 variables, 18/18 constraints. Problems are: Problem set: 0 solved, 2655 unsolved
SMT process timed out in 41568ms, After SMT, problems are : Problem set: 0 solved, 2655 unsolved
Search for dead transitions found 0 dead transitions in 41666ms
[2024-06-01 15:38:37] [INFO ] Flow matrix only has 2625 transitions (discarded 36 similar events)
[2024-06-01 15:38:37] [INFO ] Invariant cache hit.
[2024-06-01 15:38:37] [INFO ] Implicit Places using invariants in 638 ms returned []
[2024-06-01 15:38:37] [INFO ] Flow matrix only has 2625 transitions (discarded 36 similar events)
[2024-06-01 15:38:37] [INFO ] Invariant cache hit.
[2024-06-01 15:38:41] [INFO ] State equation strengthened by 168 read => feed constraints.
[2024-06-01 15:39:02] [INFO ] Implicit Places using invariants and state equation in 24527 ms returned []
Implicit Place search using SMT with State Equation took 25173 ms to find 0 implicit places.
Running 2655 sub problems to find dead transitions.
[2024-06-01 15:39:02] [INFO ] Flow matrix only has 2625 transitions (discarded 36 similar events)
[2024-06-01 15:39:02] [INFO ] Invariant cache hit.
[2024-06-01 15:39:02] [INFO ] State equation strengthened by 168 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/679 variables, 18/18 constraints. Problems are: Problem set: 0 solved, 2655 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/679 variables, 27/45 constraints. Problems are: Problem set: 0 solved, 2655 unsolved
[2024-06-01 15:39:48] [INFO ] Deduced a trap composed of 148 places in 571 ms of which 28 ms to minimize.
[2024-06-01 15:39:52] [INFO ] Deduced a trap composed of 68 places in 2164 ms of which 3 ms to minimize.
[2024-06-01 15:39:52] [INFO ] Deduced a trap composed of 15 places in 339 ms of which 2 ms to minimize.
[2024-06-01 15:39:53] [INFO ] Deduced a trap composed of 316 places in 515 ms of which 16 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 679/3310 variables, and 49 constraints, problems are : Problem set: 0 solved, 2655 unsolved in 30079 ms.
Refiners :[Positive P Invariants (semi-flows): 18/20 constraints, Generalized P Invariants (flows): 27/32 constraints, State Equation: 0/685 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 2655/1401 constraints, Known Traps: 4/4 constraints]
Escalating to Integer solving :Problem set: 0 solved, 2655 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/679 variables, 18/18 constraints. Problems are: Problem set: 0 solved, 2655 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/679 variables, 27/45 constraints. Problems are: Problem set: 0 solved, 2655 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/679 variables, 4/49 constraints. Problems are: Problem set: 0 solved, 2655 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 679/3310 variables, and 49 constraints, problems are : Problem set: 0 solved, 2655 unsolved in 30129 ms.
Refiners :[Positive P Invariants (semi-flows): 18/20 constraints, Generalized P Invariants (flows): 27/32 constraints, State Equation: 0/685 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 1254/1401 constraints, Known Traps: 4/4 constraints]
After SMT, in 81638ms problems are : Problem set: 0 solved, 2655 unsolved
Search for dead transitions found 0 dead transitions in 81676ms
Starting structural reductions in LTL mode, iteration 1 : 685/700 places, 2661/2670 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 148990 ms. Remains : 685/700 places, 2661/2670 transitions.
Support contains 105 out of 685 places after structural reductions.
[2024-06-01 15:40:24] [INFO ] Flatten gal took : 317 ms
[2024-06-01 15:40:24] [INFO ] Flatten gal took : 179 ms
[2024-06-01 15:40:25] [INFO ] Input system was already deterministic with 2661 transitions.
RANDOM walk for 40000 steps (218 resets) in 2705 ms. (14 steps per ms) remains 1/21 properties
BEST_FIRST walk for 40004 steps (244 resets) in 382 ms. (104 steps per ms) remains 1/1 properties
[2024-06-01 15:40:26] [INFO ] Flow matrix only has 2625 transitions (discarded 36 similar events)
[2024-06-01 15:40:26] [INFO ] Invariant cache hit.
[2024-06-01 15:40:26] [INFO ] State equation strengthened by 168 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/3 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 46/49 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/49 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 445/494 variables, 5/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/494 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Problem AtomicPropp11 is UNSAT
After SMT solving in domain Real declared 593/3310 variables, and 24 constraints, problems are : Problem set: 1 solved, 0 unsolved in 162 ms.
Refiners :[Positive P Invariants (semi-flows): 19/20 constraints, Generalized P Invariants (flows): 5/32 constraints, State Equation: 0/685 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints]
After SMT, in 183ms problems are : Problem set: 1 solved, 0 unsolved
Skipping Parikh replay, no witness traces provided.
FORMULA PolyORBLF-PT-S06J06T06-LTLFireability-12 FALSE TECHNIQUES REACHABILITY_KNOWLEDGE
Successfully simplified 1 atomic propositions for a total of 10 simplifications.
FORMULA PolyORBLF-PT-S06J06T06-LTLFireability-11 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Computed a total of 0 stabilizing places and 0 stable transitions
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F(X(G(F(G(((F(p0)&&X(X(X(X(p0))))) U p1)))))))'
Support contains 26 out of 685 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 685/685 places, 2661/2661 transitions.
Discarding 2 places :
Symmetric choice reduction at 0 with 2 rule applications. Total rules 2 place count 683 transition count 2659
Iterating global reduction 0 with 2 rules applied. Total rules applied 4 place count 683 transition count 2659
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 5 place count 682 transition count 2658
Iterating global reduction 0 with 1 rules applied. Total rules applied 6 place count 682 transition count 2658
Applied a total of 6 rules in 104 ms. Remains 682 /685 variables (removed 3) and now considering 2658/2661 (removed 3) transitions.
Running 2652 sub problems to find dead transitions.
[2024-06-01 15:40:27] [INFO ] Flow matrix only has 2622 transitions (discarded 36 similar events)
// Phase 1: matrix 2622 rows 682 cols
[2024-06-01 15:40:27] [INFO ] Computed 52 invariants in 146 ms
[2024-06-01 15:40:27] [INFO ] State equation strengthened by 168 read => feed constraints.
Error getting values : (error "ParserException while parsing response: (timeout
org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
At refinement iteration 0 (INCLUDED_ONLY) 0/676 variables, 13/13 constraints. Problems are: Problem set: 0 solved, 2652 unsolved
SMT process timed out in 45560ms, After SMT, problems are : Problem set: 0 solved, 2652 unsolved
Search for dead transitions found 0 dead transitions in 45597ms
[2024-06-01 15:41:12] [INFO ] Flow matrix only has 2622 transitions (discarded 36 similar events)
[2024-06-01 15:41:12] [INFO ] Invariant cache hit.
[2024-06-01 15:41:13] [INFO ] Implicit Places using invariants in 990 ms returned [64, 183, 462, 522, 657, 662]
Discarding 6 places :
Implicit Place search using SMT only with invariants took 1006 ms to find 6 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 676/685 places, 2658/2661 transitions.
Applied a total of 0 rules in 32 ms. Remains 676 /676 variables (removed 0) and now considering 2658/2658 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 46748 ms. Remains : 676/685 places, 2658/2661 transitions.
Stuttering acceptance computed with spot in 610 ms :[(NOT p1), (NOT p1), (AND (NOT p1) (NOT p0)), (AND (NOT p1) (NOT p0)), (AND (NOT p1) (NOT p0)), (AND (NOT p1) (NOT p0)), (AND (NOT p1) (NOT p0)), (AND (NOT p1) (NOT p0))]
Running random walk in product with property : PolyORBLF-PT-S06J06T06-LTLFireability-00
Stuttering criterion allowed to conclude after 7 steps with 0 reset in 4 ms.
FORMULA PolyORBLF-PT-S06J06T06-LTLFireability-00 FALSE TECHNIQUES STUTTER_TEST
Treatment of property PolyORBLF-PT-S06J06T06-LTLFireability-00 finished in 47432 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G(F(p0)))'
Support contains 12 out of 685 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 685/685 places, 2661/2661 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 44 transitions
Trivial Post-agglo rules discarded 44 transitions
Performed 44 trivial Post agglomeration. Transition count delta: 44
Iterating post reduction 0 with 44 rules applied. Total rules applied 44 place count 685 transition count 2617
Reduce places removed 44 places and 0 transitions.
Iterating post reduction 1 with 44 rules applied. Total rules applied 88 place count 641 transition count 2617
Performed 84 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 84 Pre rules applied. Total rules applied 88 place count 641 transition count 2533
Deduced a syphon composed of 84 places in 2 ms
Reduce places removed 84 places and 0 transitions.
Iterating global reduction 2 with 168 rules applied. Total rules applied 256 place count 557 transition count 2533
Performed 61 Post agglomeration using F-continuation condition.Transition count delta: 61
Deduced a syphon composed of 61 places in 9 ms
Reduce places removed 61 places and 0 transitions.
Iterating global reduction 2 with 122 rules applied. Total rules applied 378 place count 496 transition count 2472
Applied a total of 378 rules in 396 ms. Remains 496 /685 variables (removed 189) and now considering 2472/2661 (removed 189) transitions.
Running 2466 sub problems to find dead transitions.
[2024-06-01 15:41:14] [INFO ] Flow matrix only has 2436 transitions (discarded 36 similar events)
// Phase 1: matrix 2436 rows 496 cols
[2024-06-01 15:41:14] [INFO ] Computed 52 invariants in 84 ms
[2024-06-01 15:41:14] [INFO ] State equation strengthened by 168 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/490 variables, 21/21 constraints. Problems are: Problem set: 0 solved, 2466 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/490 variables, 24/45 constraints. Problems are: Problem set: 0 solved, 2466 unsolved
[2024-06-01 15:41:56] [INFO ] Deduced a trap composed of 15 places in 313 ms of which 2 ms to minimize.
[2024-06-01 15:41:57] [INFO ] Deduced a trap composed of 26 places in 319 ms of which 3 ms to minimize.
[2024-06-01 15:41:57] [INFO ] Deduced a trap composed of 55 places in 402 ms of which 2 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 490/2932 variables, and 48 constraints, problems are : Problem set: 0 solved, 2466 unsolved in 20045 ms.
Refiners :[Positive P Invariants (semi-flows): 21/22 constraints, Generalized P Invariants (flows): 24/30 constraints, State Equation: 0/496 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 2466/1212 constraints, Known Traps: 3/3 constraints]
Escalating to Integer solving :Problem set: 0 solved, 2466 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/490 variables, 21/21 constraints. Problems are: Problem set: 0 solved, 2466 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/490 variables, 24/45 constraints. Problems are: Problem set: 0 solved, 2466 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/490 variables, 3/48 constraints. Problems are: Problem set: 0 solved, 2466 unsolved
[2024-06-01 15:42:04] [INFO ] Deduced a trap composed of 29 places in 294 ms of which 2 ms to minimize.
[2024-06-01 15:42:07] [INFO ] Deduced a trap composed of 61 places in 94 ms of which 1 ms to minimize.
[2024-06-01 15:42:07] [INFO ] Deduced a trap composed of 60 places in 57 ms of which 1 ms to minimize.
[2024-06-01 15:42:07] [INFO ] Deduced a trap composed of 60 places in 56 ms of which 1 ms to minimize.
[2024-06-01 15:42:08] [INFO ] Deduced a trap composed of 60 places in 75 ms of which 1 ms to minimize.
[2024-06-01 15:42:10] [INFO ] Deduced a trap composed of 60 places in 99 ms of which 1 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 490/2932 variables, and 54 constraints, problems are : Problem set: 0 solved, 2466 unsolved in 20063 ms.
Refiners :[Positive P Invariants (semi-flows): 21/22 constraints, Generalized P Invariants (flows): 24/30 constraints, State Equation: 0/496 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 1254/1212 constraints, Known Traps: 9/9 constraints]
After SMT, in 64671ms problems are : Problem set: 0 solved, 2466 unsolved
Search for dead transitions found 0 dead transitions in 64748ms
[2024-06-01 15:42:19] [INFO ] Flow matrix only has 2436 transitions (discarded 36 similar events)
[2024-06-01 15:42:19] [INFO ] Invariant cache hit.
[2024-06-01 15:42:20] [INFO ] Implicit Places using invariants in 991 ms returned [46, 128, 329, 374, 477, 481]
Discarding 6 places :
Implicit Place search using SMT only with invariants took 1020 ms to find 6 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 490/685 places, 2472/2661 transitions.
Discarding 3 places :
Symmetric choice reduction at 0 with 3 rule applications. Total rules 3 place count 487 transition count 2469
Iterating global reduction 0 with 3 rules applied. Total rules applied 6 place count 487 transition count 2469
Applied a total of 6 rules in 104 ms. Remains 487 /490 variables (removed 3) and now considering 2469/2472 (removed 3) transitions.
[2024-06-01 15:42:20] [INFO ] Flow matrix only has 2433 transitions (discarded 36 similar events)
// Phase 1: matrix 2433 rows 487 cols
[2024-06-01 15:42:20] [INFO ] Computed 46 invariants in 96 ms
[2024-06-01 15:42:21] [INFO ] Implicit Places using invariants in 735 ms returned []
[2024-06-01 15:42:21] [INFO ] Flow matrix only has 2433 transitions (discarded 36 similar events)
[2024-06-01 15:42:21] [INFO ] Invariant cache hit.
[2024-06-01 15:42:22] [INFO ] State equation strengthened by 168 read => feed constraints.
[2024-06-01 15:42:50] [INFO ] Implicit Places using invariants and state equation in 29140 ms returned []
Implicit Place search using SMT with State Equation took 29885 ms to find 0 implicit places.
Starting structural reductions in SI_LTL mode, iteration 2 : 487/685 places, 2469/2661 transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 96174 ms. Remains : 487/685 places, 2469/2661 transitions.
Stuttering acceptance computed with spot in 140 ms :[(NOT p0), (NOT p0)]
Running random walk in product with property : PolyORBLF-PT-S06J06T06-LTLFireability-01
Product exploration explored 100000 steps with 5500 reset in 1480 ms.
Product exploration explored 100000 steps with 5466 reset in 1540 ms.
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Knowledge obtained : [p0, (X p0), (X (X p0))]
False Knowledge obtained : []
Knowledge based reduction with 3 factoid took 98 ms. Reduced automaton from 2 states, 3 edges and 1 AP (stutter insensitive) to 2 states, 3 edges and 1 AP (stutter insensitive).
Stuttering acceptance computed with spot in 76 ms :[(NOT p0), (NOT p0)]
RANDOM walk for 67 steps (2 resets) in 9 ms. (6 steps per ms) remains 0/1 properties
Knowledge obtained : [p0, (X p0), (X (X p0))]
False Knowledge obtained : [(F (NOT p0))]
Knowledge based reduction with 3 factoid took 101 ms. Reduced automaton from 2 states, 3 edges and 1 AP (stutter insensitive) to 2 states, 3 edges and 1 AP (stutter insensitive).
Stuttering acceptance computed with spot in 64 ms :[(NOT p0), (NOT p0)]
Stuttering acceptance computed with spot in 82 ms :[(NOT p0), (NOT p0)]
Support contains 12 out of 487 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 487/487 places, 2469/2469 transitions.
Applied a total of 0 rules in 67 ms. Remains 487 /487 variables (removed 0) and now considering 2469/2469 (removed 0) transitions.
Running 2463 sub problems to find dead transitions.
[2024-06-01 15:42:54] [INFO ] Flow matrix only has 2433 transitions (discarded 36 similar events)
[2024-06-01 15:42:54] [INFO ] Invariant cache hit.
[2024-06-01 15:42:54] [INFO ] State equation strengthened by 168 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/481 variables, 18/18 constraints. Problems are: Problem set: 0 solved, 2463 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/481 variables, 17/35 constraints. Problems are: Problem set: 0 solved, 2463 unsolved
[2024-06-01 15:43:31] [INFO ] Deduced a trap composed of 31 places in 89 ms of which 2 ms to minimize.
[2024-06-01 15:43:31] [INFO ] Deduced a trap composed of 3 places in 61 ms of which 1 ms to minimize.
[2024-06-01 15:43:31] [INFO ] Deduced a trap composed of 26 places in 117 ms of which 1 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 481/2920 variables, and 38 constraints, problems are : Problem set: 0 solved, 2463 unsolved in 20036 ms.
Refiners :[Positive P Invariants (semi-flows): 18/19 constraints, Generalized P Invariants (flows): 17/27 constraints, State Equation: 0/487 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 2463/1209 constraints, Known Traps: 3/3 constraints]
Escalating to Integer solving :Problem set: 0 solved, 2463 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/481 variables, 18/18 constraints. Problems are: Problem set: 0 solved, 2463 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/481 variables, 17/35 constraints. Problems are: Problem set: 0 solved, 2463 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/481 variables, 3/38 constraints. Problems are: Problem set: 0 solved, 2463 unsolved
[2024-06-01 15:43:39] [INFO ] Deduced a trap composed of 61 places in 506 ms of which 2 ms to minimize.
[2024-06-01 15:43:40] [INFO ] Deduced a trap composed of 35 places in 487 ms of which 3 ms to minimize.
[2024-06-01 15:43:40] [INFO ] Deduced a trap composed of 60 places in 73 ms of which 1 ms to minimize.
[2024-06-01 15:43:43] [INFO ] Deduced a trap composed of 60 places in 110 ms of which 1 ms to minimize.
[2024-06-01 15:43:43] [INFO ] Deduced a trap composed of 61 places in 63 ms of which 1 ms to minimize.
[2024-06-01 15:43:44] [INFO ] Deduced a trap composed of 61 places in 86 ms of which 2 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 481/2920 variables, and 44 constraints, problems are : Problem set: 0 solved, 2463 unsolved in 20051 ms.
Refiners :[Positive P Invariants (semi-flows): 18/19 constraints, Generalized P Invariants (flows): 17/27 constraints, State Equation: 0/487 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 1254/1209 constraints, Known Traps: 9/9 constraints]
After SMT, in 61933ms problems are : Problem set: 0 solved, 2463 unsolved
Search for dead transitions found 0 dead transitions in 61982ms
[2024-06-01 15:43:56] [INFO ] Flow matrix only has 2433 transitions (discarded 36 similar events)
[2024-06-01 15:43:56] [INFO ] Invariant cache hit.
[2024-06-01 15:43:57] [INFO ] Implicit Places using invariants in 789 ms returned []
[2024-06-01 15:43:57] [INFO ] Flow matrix only has 2433 transitions (discarded 36 similar events)
[2024-06-01 15:43:57] [INFO ] Invariant cache hit.
[2024-06-01 15:43:58] [INFO ] State equation strengthened by 168 read => feed constraints.
[2024-06-01 15:44:25] [INFO ] Implicit Places using invariants and state equation in 28224 ms returned []
Implicit Place search using SMT with State Equation took 29028 ms to find 0 implicit places.
[2024-06-01 15:44:25] [INFO ] Redundant transitions in 161 ms returned []
Running 2463 sub problems to find dead transitions.
[2024-06-01 15:44:25] [INFO ] Flow matrix only has 2433 transitions (discarded 36 similar events)
[2024-06-01 15:44:25] [INFO ] Invariant cache hit.
[2024-06-01 15:44:25] [INFO ] State equation strengthened by 168 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/481 variables, 18/18 constraints. Problems are: Problem set: 0 solved, 2463 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/481 variables, 17/35 constraints. Problems are: Problem set: 0 solved, 2463 unsolved
[2024-06-01 15:45:04] [INFO ] Deduced a trap composed of 31 places in 81 ms of which 2 ms to minimize.
[2024-06-01 15:45:04] [INFO ] Deduced a trap composed of 3 places in 69 ms of which 2 ms to minimize.
[2024-06-01 15:45:05] [INFO ] Deduced a trap composed of 26 places in 185 ms of which 3 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 481/2920 variables, and 38 constraints, problems are : Problem set: 0 solved, 2463 unsolved in 30041 ms.
Refiners :[Positive P Invariants (semi-flows): 18/19 constraints, Generalized P Invariants (flows): 17/27 constraints, State Equation: 0/487 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 2463/1209 constraints, Known Traps: 3/3 constraints]
Escalating to Integer solving :Problem set: 0 solved, 2463 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/481 variables, 18/18 constraints. Problems are: Problem set: 0 solved, 2463 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/481 variables, 17/35 constraints. Problems are: Problem set: 0 solved, 2463 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/481 variables, 3/38 constraints. Problems are: Problem set: 0 solved, 2463 unsolved
[2024-06-01 15:45:21] [INFO ] Deduced a trap composed of 61 places in 528 ms of which 3 ms to minimize.
[2024-06-01 15:45:21] [INFO ] Deduced a trap composed of 35 places in 429 ms of which 3 ms to minimize.
[2024-06-01 15:45:22] [INFO ] Deduced a trap composed of 60 places in 64 ms of which 1 ms to minimize.
[2024-06-01 15:45:24] [INFO ] Deduced a trap composed of 60 places in 115 ms of which 1 ms to minimize.
[2024-06-01 15:45:24] [INFO ] Deduced a trap composed of 61 places in 60 ms of which 1 ms to minimize.
[2024-06-01 15:45:25] [INFO ] Deduced a trap composed of 61 places in 65 ms of which 1 ms to minimize.
At refinement iteration 3 (INCLUDED_ONLY) 0/481 variables, 6/44 constraints. Problems are: Problem set: 0 solved, 2463 unsolved
[2024-06-01 15:45:45] [INFO ] Deduced a trap composed of 61 places in 72 ms of which 1 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 481/2920 variables, and 45 constraints, problems are : Problem set: 0 solved, 2463 unsolved in 30033 ms.
Refiners :[Positive P Invariants (semi-flows): 18/19 constraints, Generalized P Invariants (flows): 17/27 constraints, State Equation: 0/487 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 1254/1209 constraints, Known Traps: 10/10 constraints]
After SMT, in 82496ms problems are : Problem set: 0 solved, 2463 unsolved
Search for dead transitions found 0 dead transitions in 82519ms
Finished structural reductions in SI_LTL mode , in 1 iterations and 173790 ms. Remains : 487/487 places, 2469/2469 transitions.
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Knowledge obtained : [p0, (X p0), (X (X p0))]
False Knowledge obtained : []
Knowledge based reduction with 3 factoid took 93 ms. Reduced automaton from 2 states, 3 edges and 1 AP (stutter insensitive) to 2 states, 3 edges and 1 AP (stutter insensitive).
Stuttering acceptance computed with spot in 56 ms :[(NOT p0), (NOT p0)]
RANDOM walk for 63 steps (2 resets) in 7 ms. (7 steps per ms) remains 0/1 properties
Knowledge obtained : [p0, (X p0), (X (X p0))]
False Knowledge obtained : [(F (NOT p0))]
Knowledge based reduction with 3 factoid took 83 ms. Reduced automaton from 2 states, 3 edges and 1 AP (stutter insensitive) to 2 states, 3 edges and 1 AP (stutter insensitive).
Stuttering acceptance computed with spot in 49 ms :[(NOT p0), (NOT p0)]
Stuttering acceptance computed with spot in 52 ms :[(NOT p0), (NOT p0)]
Stuttering acceptance computed with spot in 65 ms :[(NOT p0), (NOT p0)]
Product exploration explored 100000 steps with 5504 reset in 1045 ms.
Product exploration explored 100000 steps with 5595 reset in 1074 ms.
Support contains 12 out of 487 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 487/487 places, 2469/2469 transitions.
Applied a total of 0 rules in 42 ms. Remains 487 /487 variables (removed 0) and now considering 2469/2469 (removed 0) transitions.
Running 2463 sub problems to find dead transitions.
[2024-06-01 15:45:50] [INFO ] Flow matrix only has 2433 transitions (discarded 36 similar events)
[2024-06-01 15:45:50] [INFO ] Invariant cache hit.
[2024-06-01 15:45:50] [INFO ] State equation strengthened by 168 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/481 variables, 18/18 constraints. Problems are: Problem set: 0 solved, 2463 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/481 variables, 17/35 constraints. Problems are: Problem set: 0 solved, 2463 unsolved
[2024-06-01 15:46:23] [INFO ] Deduced a trap composed of 31 places in 59 ms of which 1 ms to minimize.
[2024-06-01 15:46:23] [INFO ] Deduced a trap composed of 3 places in 63 ms of which 2 ms to minimize.
[2024-06-01 15:46:24] [INFO ] Deduced a trap composed of 26 places in 195 ms of which 4 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 481/2920 variables, and 38 constraints, problems are : Problem set: 0 solved, 2463 unsolved in 20033 ms.
Refiners :[Positive P Invariants (semi-flows): 18/19 constraints, Generalized P Invariants (flows): 17/27 constraints, State Equation: 0/487 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 2463/1209 constraints, Known Traps: 3/3 constraints]
Escalating to Integer solving :Problem set: 0 solved, 2463 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/481 variables, 18/18 constraints. Problems are: Problem set: 0 solved, 2463 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/481 variables, 17/35 constraints. Problems are: Problem set: 0 solved, 2463 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/481 variables, 3/38 constraints. Problems are: Problem set: 0 solved, 2463 unsolved
[2024-06-01 15:46:33] [INFO ] Deduced a trap composed of 61 places in 391 ms of which 2 ms to minimize.
[2024-06-01 15:46:33] [INFO ] Deduced a trap composed of 35 places in 522 ms of which 3 ms to minimize.
[2024-06-01 15:46:34] [INFO ] Deduced a trap composed of 60 places in 66 ms of which 0 ms to minimize.
[2024-06-01 15:46:36] [INFO ] Deduced a trap composed of 60 places in 88 ms of which 1 ms to minimize.
[2024-06-01 15:46:36] [INFO ] Deduced a trap composed of 61 places in 63 ms of which 14 ms to minimize.
[2024-06-01 15:46:37] [INFO ] Deduced a trap composed of 61 places in 46 ms of which 0 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 481/2920 variables, and 44 constraints, problems are : Problem set: 0 solved, 2463 unsolved in 20027 ms.
Refiners :[Positive P Invariants (semi-flows): 18/19 constraints, Generalized P Invariants (flows): 17/27 constraints, State Equation: 0/487 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 1254/1209 constraints, Known Traps: 9/9 constraints]
After SMT, in 59346ms problems are : Problem set: 0 solved, 2463 unsolved
Search for dead transitions found 0 dead transitions in 59367ms
[2024-06-01 15:46:50] [INFO ] Flow matrix only has 2433 transitions (discarded 36 similar events)
[2024-06-01 15:46:50] [INFO ] Invariant cache hit.
[2024-06-01 15:46:50] [INFO ] Implicit Places using invariants in 518 ms returned []
[2024-06-01 15:46:50] [INFO ] Flow matrix only has 2433 transitions (discarded 36 similar events)
[2024-06-01 15:46:50] [INFO ] Invariant cache hit.
[2024-06-01 15:46:51] [INFO ] State equation strengthened by 168 read => feed constraints.
[2024-06-01 15:47:19] [INFO ] Implicit Places using invariants and state equation in 28987 ms returned []
Implicit Place search using SMT with State Equation took 29525 ms to find 0 implicit places.
[2024-06-01 15:47:19] [INFO ] Redundant transitions in 209 ms returned []
Running 2463 sub problems to find dead transitions.
[2024-06-01 15:47:19] [INFO ] Flow matrix only has 2433 transitions (discarded 36 similar events)
[2024-06-01 15:47:19] [INFO ] Invariant cache hit.
[2024-06-01 15:47:19] [INFO ] State equation strengthened by 168 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/481 variables, 18/18 constraints. Problems are: Problem set: 0 solved, 2463 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/481 variables, 17/35 constraints. Problems are: Problem set: 0 solved, 2463 unsolved
[2024-06-01 15:47:57] [INFO ] Deduced a trap composed of 31 places in 70 ms of which 4 ms to minimize.
[2024-06-01 15:47:57] [INFO ] Deduced a trap composed of 3 places in 63 ms of which 1 ms to minimize.
[2024-06-01 15:47:58] [INFO ] Deduced a trap composed of 26 places in 197 ms of which 2 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 481/2920 variables, and 38 constraints, problems are : Problem set: 0 solved, 2463 unsolved in 30033 ms.
Refiners :[Positive P Invariants (semi-flows): 18/19 constraints, Generalized P Invariants (flows): 17/27 constraints, State Equation: 0/487 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 2463/1209 constraints, Known Traps: 3/3 constraints]
Escalating to Integer solving :Problem set: 0 solved, 2463 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/481 variables, 18/18 constraints. Problems are: Problem set: 0 solved, 2463 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/481 variables, 17/35 constraints. Problems are: Problem set: 0 solved, 2463 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/481 variables, 3/38 constraints. Problems are: Problem set: 0 solved, 2463 unsolved
[2024-06-01 15:48:17] [INFO ] Deduced a trap composed of 61 places in 362 ms of which 1 ms to minimize.
[2024-06-01 15:48:17] [INFO ] Deduced a trap composed of 35 places in 371 ms of which 2 ms to minimize.
[2024-06-01 15:48:17] [INFO ] Deduced a trap composed of 60 places in 61 ms of which 0 ms to minimize.
[2024-06-01 15:48:19] [INFO ] Deduced a trap composed of 60 places in 92 ms of which 1 ms to minimize.
[2024-06-01 15:48:20] [INFO ] Deduced a trap composed of 61 places in 54 ms of which 1 ms to minimize.
[2024-06-01 15:48:20] [INFO ] Deduced a trap composed of 61 places in 60 ms of which 1 ms to minimize.
At refinement iteration 3 (INCLUDED_ONLY) 0/481 variables, 6/44 constraints. Problems are: Problem set: 0 solved, 2463 unsolved
[2024-06-01 15:48:38] [INFO ] Deduced a trap composed of 61 places in 56 ms of which 9 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 481/2920 variables, and 45 constraints, problems are : Problem set: 0 solved, 2463 unsolved in 30042 ms.
Refiners :[Positive P Invariants (semi-flows): 18/19 constraints, Generalized P Invariants (flows): 17/27 constraints, State Equation: 0/487 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 1254/1209 constraints, Known Traps: 10/10 constraints]
After SMT, in 84106ms problems are : Problem set: 0 solved, 2463 unsolved
Search for dead transitions found 0 dead transitions in 84131ms
Finished structural reductions in SI_LTL mode , in 1 iterations and 173296 ms. Remains : 487/487 places, 2469/2469 transitions.
Treatment of property PolyORBLF-PT-S06J06T06-LTLFireability-01 finished in 449966 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G((F(p0)&&F(G(p1)))))'
Support contains 20 out of 685 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 685/685 places, 2661/2661 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 20 transitions
Trivial Post-agglo rules discarded 20 transitions
Performed 20 trivial Post agglomeration. Transition count delta: 20
Iterating post reduction 0 with 20 rules applied. Total rules applied 20 place count 685 transition count 2641
Reduce places removed 20 places and 0 transitions.
Performed 12 Post agglomeration using F-continuation condition.Transition count delta: 12
Iterating post reduction 1 with 32 rules applied. Total rules applied 52 place count 665 transition count 2629
Reduce places removed 12 places and 0 transitions.
Iterating post reduction 2 with 12 rules applied. Total rules applied 64 place count 653 transition count 2629
Performed 90 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 90 Pre rules applied. Total rules applied 64 place count 653 transition count 2539
Deduced a syphon composed of 90 places in 2 ms
Reduce places removed 90 places and 0 transitions.
Iterating global reduction 3 with 180 rules applied. Total rules applied 244 place count 563 transition count 2539
Performed 55 Post agglomeration using F-continuation condition.Transition count delta: 55
Deduced a syphon composed of 55 places in 1 ms
Reduce places removed 55 places and 0 transitions.
Iterating global reduction 3 with 110 rules applied. Total rules applied 354 place count 508 transition count 2484
Applied a total of 354 rules in 221 ms. Remains 508 /685 variables (removed 177) and now considering 2484/2661 (removed 177) transitions.
Running 2478 sub problems to find dead transitions.
[2024-06-01 15:48:44] [INFO ] Flow matrix only has 2448 transitions (discarded 36 similar events)
// Phase 1: matrix 2448 rows 508 cols
[2024-06-01 15:48:44] [INFO ] Computed 52 invariants in 80 ms
[2024-06-01 15:48:44] [INFO ] State equation strengthened by 168 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/502 variables, 19/19 constraints. Problems are: Problem set: 0 solved, 2478 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/502 variables, 22/41 constraints. Problems are: Problem set: 0 solved, 2478 unsolved
[2024-06-01 15:49:19] [INFO ] Deduced a trap composed of 3 places in 64 ms of which 1 ms to minimize.
[2024-06-01 15:49:21] [INFO ] Deduced a trap composed of 32 places in 126 ms of which 2 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 502/2956 variables, and 43 constraints, problems are : Problem set: 0 solved, 2478 unsolved in 20049 ms.
Refiners :[Positive P Invariants (semi-flows): 19/21 constraints, Generalized P Invariants (flows): 22/31 constraints, State Equation: 0/508 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 2478/1224 constraints, Known Traps: 2/2 constraints]
Escalating to Integer solving :Problem set: 0 solved, 2478 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/502 variables, 19/19 constraints. Problems are: Problem set: 0 solved, 2478 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/502 variables, 22/41 constraints. Problems are: Problem set: 0 solved, 2478 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/502 variables, 2/43 constraints. Problems are: Problem set: 0 solved, 2478 unsolved
[2024-06-01 15:49:27] [INFO ] Deduced a trap composed of 35 places in 580 ms of which 3 ms to minimize.
[2024-06-01 15:49:28] [INFO ] Deduced a trap composed of 62 places in 185 ms of which 2 ms to minimize.
[2024-06-01 15:49:28] [INFO ] Deduced a trap composed of 62 places in 125 ms of which 2 ms to minimize.
[2024-06-01 15:49:28] [INFO ] Deduced a trap composed of 63 places in 134 ms of which 1 ms to minimize.
[2024-06-01 15:49:28] [INFO ] Deduced a trap composed of 62 places in 84 ms of which 1 ms to minimize.
[2024-06-01 15:49:28] [INFO ] Deduced a trap composed of 62 places in 64 ms of which 1 ms to minimize.
[2024-06-01 15:49:28] [INFO ] Deduced a trap composed of 63 places in 95 ms of which 1 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 502/2956 variables, and 50 constraints, problems are : Problem set: 0 solved, 2478 unsolved in 20043 ms.
Refiners :[Positive P Invariants (semi-flows): 19/21 constraints, Generalized P Invariants (flows): 22/31 constraints, State Equation: 0/508 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 1254/1224 constraints, Known Traps: 9/9 constraints]
After SMT, in 58696ms problems are : Problem set: 0 solved, 2478 unsolved
Search for dead transitions found 0 dead transitions in 58743ms
[2024-06-01 15:49:43] [INFO ] Flow matrix only has 2448 transitions (discarded 36 similar events)
[2024-06-01 15:49:43] [INFO ] Invariant cache hit.
[2024-06-01 15:49:44] [INFO ] Implicit Places using invariants in 817 ms returned []
[2024-06-01 15:49:44] [INFO ] Flow matrix only has 2448 transitions (discarded 36 similar events)
[2024-06-01 15:49:44] [INFO ] Invariant cache hit.
[2024-06-01 15:49:45] [INFO ] State equation strengthened by 168 read => feed constraints.
[2024-06-01 15:50:12] [INFO ] Implicit Places using invariants and state equation in 28537 ms returned []
Implicit Place search using SMT with State Equation took 29357 ms to find 0 implicit places.
[2024-06-01 15:50:12] [INFO ] Redundant transitions in 109 ms returned []
Running 2478 sub problems to find dead transitions.
[2024-06-01 15:50:12] [INFO ] Flow matrix only has 2448 transitions (discarded 36 similar events)
[2024-06-01 15:50:12] [INFO ] Invariant cache hit.
[2024-06-01 15:50:12] [INFO ] State equation strengthened by 168 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/502 variables, 19/19 constraints. Problems are: Problem set: 0 solved, 2478 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/502 variables, 22/41 constraints. Problems are: Problem set: 0 solved, 2478 unsolved
[2024-06-01 15:50:49] [INFO ] Deduced a trap composed of 3 places in 70 ms of which 1 ms to minimize.
[2024-06-01 15:50:51] [INFO ] Deduced a trap composed of 32 places in 130 ms of which 2 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 502/2956 variables, and 43 constraints, problems are : Problem set: 0 solved, 2478 unsolved in 30037 ms.
Refiners :[Positive P Invariants (semi-flows): 19/21 constraints, Generalized P Invariants (flows): 22/31 constraints, State Equation: 0/508 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 2478/1224 constraints, Known Traps: 2/2 constraints]
Escalating to Integer solving :Problem set: 0 solved, 2478 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/502 variables, 19/19 constraints. Problems are: Problem set: 0 solved, 2478 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/502 variables, 22/41 constraints. Problems are: Problem set: 0 solved, 2478 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/502 variables, 2/43 constraints. Problems are: Problem set: 0 solved, 2478 unsolved
[2024-06-01 15:51:09] [INFO ] Deduced a trap composed of 35 places in 441 ms of which 2 ms to minimize.
[2024-06-01 15:51:09] [INFO ] Deduced a trap composed of 62 places in 135 ms of which 2 ms to minimize.
[2024-06-01 15:51:09] [INFO ] Deduced a trap composed of 63 places in 101 ms of which 1 ms to minimize.
[2024-06-01 15:51:09] [INFO ] Deduced a trap composed of 63 places in 81 ms of which 1 ms to minimize.
At refinement iteration 3 (INCLUDED_ONLY) 0/502 variables, 4/47 constraints. Problems are: Problem set: 0 solved, 2478 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 502/2956 variables, and 47 constraints, problems are : Problem set: 0 solved, 2478 unsolved in 30031 ms.
Refiners :[Positive P Invariants (semi-flows): 19/21 constraints, Generalized P Invariants (flows): 22/31 constraints, State Equation: 0/508 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 1254/1224 constraints, Known Traps: 6/6 constraints]
After SMT, in 82119ms problems are : Problem set: 0 solved, 2478 unsolved
Search for dead transitions found 0 dead transitions in 82161ms
Starting structural reductions in SI_LTL mode, iteration 1 : 508/685 places, 2484/2661 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 170629 ms. Remains : 508/685 places, 2484/2661 transitions.
Stuttering acceptance computed with spot in 107 ms :[(OR (NOT p0) (NOT p1)), (NOT p0), (NOT p1)]
Running random walk in product with property : PolyORBLF-PT-S06J06T06-LTLFireability-02
Stuttering criterion allowed to conclude after 29 steps with 0 reset in 1 ms.
FORMULA PolyORBLF-PT-S06J06T06-LTLFireability-02 FALSE TECHNIQUES STUTTER_TEST
Treatment of property PolyORBLF-PT-S06J06T06-LTLFireability-02 finished in 170779 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F((G(F(G(p0)))||((X(p1) U p1)&&p2))))'
Support contains 24 out of 685 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 685/685 places, 2661/2661 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 38 transitions
Trivial Post-agglo rules discarded 38 transitions
Performed 38 trivial Post agglomeration. Transition count delta: 38
Iterating post reduction 0 with 38 rules applied. Total rules applied 38 place count 685 transition count 2623
Reduce places removed 38 places and 0 transitions.
Performed 6 Post agglomeration using F-continuation condition.Transition count delta: 6
Iterating post reduction 1 with 44 rules applied. Total rules applied 82 place count 647 transition count 2617
Reduce places removed 6 places and 0 transitions.
Iterating post reduction 2 with 6 rules applied. Total rules applied 88 place count 641 transition count 2617
Performed 84 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 84 Pre rules applied. Total rules applied 88 place count 641 transition count 2533
Deduced a syphon composed of 84 places in 1 ms
Reduce places removed 84 places and 0 transitions.
Iterating global reduction 3 with 168 rules applied. Total rules applied 256 place count 557 transition count 2533
Performed 61 Post agglomeration using F-continuation condition.Transition count delta: 61
Deduced a syphon composed of 61 places in 1 ms
Reduce places removed 61 places and 0 transitions.
Iterating global reduction 3 with 122 rules applied. Total rules applied 378 place count 496 transition count 2472
Applied a total of 378 rules in 149 ms. Remains 496 /685 variables (removed 189) and now considering 2472/2661 (removed 189) transitions.
Running 2466 sub problems to find dead transitions.
[2024-06-01 15:51:35] [INFO ] Flow matrix only has 2436 transitions (discarded 36 similar events)
// Phase 1: matrix 2436 rows 496 cols
[2024-06-01 15:51:35] [INFO ] Computed 52 invariants in 40 ms
[2024-06-01 15:51:35] [INFO ] State equation strengthened by 168 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/490 variables, 17/17 constraints. Problems are: Problem set: 0 solved, 2466 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/490 variables, 28/45 constraints. Problems are: Problem set: 0 solved, 2466 unsolved
[2024-06-01 15:52:09] [INFO ] Deduced a trap composed of 15 places in 213 ms of which 1 ms to minimize.
[2024-06-01 15:52:09] [INFO ] Deduced a trap composed of 26 places in 390 ms of which 3 ms to minimize.
[2024-06-01 15:52:10] [INFO ] Deduced a trap composed of 55 places in 367 ms of which 3 ms to minimize.
[2024-06-01 15:52:12] [INFO ] Deduced a trap composed of 5 places in 353 ms of which 2 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 490/2932 variables, and 49 constraints, problems are : Problem set: 0 solved, 2466 unsolved in 20033 ms.
Refiners :[Positive P Invariants (semi-flows): 17/19 constraints, Generalized P Invariants (flows): 28/33 constraints, State Equation: 0/496 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 2466/1212 constraints, Known Traps: 4/4 constraints]
Escalating to Integer solving :Problem set: 0 solved, 2466 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/490 variables, 17/17 constraints. Problems are: Problem set: 0 solved, 2466 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/490 variables, 28/45 constraints. Problems are: Problem set: 0 solved, 2466 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/490 variables, 4/49 constraints. Problems are: Problem set: 0 solved, 2466 unsolved
[2024-06-01 15:52:18] [INFO ] Deduced a trap composed of 61 places in 107 ms of which 1 ms to minimize.
[2024-06-01 15:52:18] [INFO ] Deduced a trap composed of 60 places in 92 ms of which 1 ms to minimize.
[2024-06-01 15:52:19] [INFO ] Deduced a trap composed of 144 places in 417 ms of which 3 ms to minimize.
[2024-06-01 15:52:21] [INFO ] Deduced a trap composed of 139 places in 356 ms of which 2 ms to minimize.
[2024-06-01 15:52:22] [INFO ] Deduced a trap composed of 61 places in 110 ms of which 1 ms to minimize.
[2024-06-01 15:52:22] [INFO ] Deduced a trap composed of 60 places in 75 ms of which 1 ms to minimize.
[2024-06-01 15:52:22] [INFO ] Deduced a trap composed of 60 places in 52 ms of which 0 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 490/2932 variables, and 56 constraints, problems are : Problem set: 0 solved, 2466 unsolved in 20031 ms.
Refiners :[Positive P Invariants (semi-flows): 17/19 constraints, Generalized P Invariants (flows): 28/33 constraints, State Equation: 0/496 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 1254/1212 constraints, Known Traps: 11/11 constraints]
After SMT, in 59165ms problems are : Problem set: 0 solved, 2466 unsolved
Search for dead transitions found 0 dead transitions in 59190ms
[2024-06-01 15:52:34] [INFO ] Flow matrix only has 2436 transitions (discarded 36 similar events)
[2024-06-01 15:52:34] [INFO ] Invariant cache hit.
[2024-06-01 15:52:35] [INFO ] Implicit Places using invariants in 690 ms returned [45, 128, 330, 375, 477, 481]
Discarding 6 places :
Implicit Place search using SMT only with invariants took 703 ms to find 6 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 490/685 places, 2472/2661 transitions.
Discarding 3 places :
Symmetric choice reduction at 0 with 3 rule applications. Total rules 3 place count 487 transition count 2469
Iterating global reduction 0 with 3 rules applied. Total rules applied 6 place count 487 transition count 2469
Applied a total of 6 rules in 66 ms. Remains 487 /490 variables (removed 3) and now considering 2469/2472 (removed 3) transitions.
[2024-06-01 15:52:35] [INFO ] Flow matrix only has 2433 transitions (discarded 36 similar events)
// Phase 1: matrix 2433 rows 487 cols
[2024-06-01 15:52:35] [INFO ] Computed 46 invariants in 56 ms
[2024-06-01 15:52:35] [INFO ] Implicit Places using invariants in 668 ms returned []
[2024-06-01 15:52:35] [INFO ] Flow matrix only has 2433 transitions (discarded 36 similar events)
[2024-06-01 15:52:35] [INFO ] Invariant cache hit.
[2024-06-01 15:52:37] [INFO ] State equation strengthened by 168 read => feed constraints.
[2024-06-01 15:52:58] [INFO ] Implicit Places using invariants and state equation in 22224 ms returned []
Implicit Place search using SMT with State Equation took 22905 ms to find 0 implicit places.
Starting structural reductions in SI_LTL mode, iteration 2 : 487/685 places, 2469/2661 transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 83024 ms. Remains : 487/685 places, 2469/2661 transitions.
Stuttering acceptance computed with spot in 97 ms :[(OR (AND (NOT p0) (NOT p2)) (AND (NOT p0) (NOT p1))), (AND (NOT p0) (NOT p1))]
Running random walk in product with property : PolyORBLF-PT-S06J06T06-LTLFireability-03
Stuttering criterion allowed to conclude after 7 steps with 0 reset in 2 ms.
FORMULA PolyORBLF-PT-S06J06T06-LTLFireability-03 FALSE TECHNIQUES STUTTER_TEST
Treatment of property PolyORBLF-PT-S06J06T06-LTLFireability-03 finished in 83143 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X((F(p0)&&X(G(p1)))))'
Support contains 20 out of 685 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 685/685 places, 2661/2661 transitions.
Discarding 2 places :
Symmetric choice reduction at 0 with 2 rule applications. Total rules 2 place count 683 transition count 2659
Iterating global reduction 0 with 2 rules applied. Total rules applied 4 place count 683 transition count 2659
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 5 place count 682 transition count 2658
Iterating global reduction 0 with 1 rules applied. Total rules applied 6 place count 682 transition count 2658
Applied a total of 6 rules in 85 ms. Remains 682 /685 variables (removed 3) and now considering 2658/2661 (removed 3) transitions.
Running 2652 sub problems to find dead transitions.
[2024-06-01 15:52:58] [INFO ] Flow matrix only has 2622 transitions (discarded 36 similar events)
// Phase 1: matrix 2622 rows 682 cols
[2024-06-01 15:52:58] [INFO ] Computed 52 invariants in 108 ms
[2024-06-01 15:52:58] [INFO ] State equation strengthened by 168 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/676 variables, 13/13 constraints. Problems are: Problem set: 0 solved, 2652 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/676 variables, 28/41 constraints. Problems are: Problem set: 0 solved, 2652 unsolved
[2024-06-01 15:53:37] [INFO ] Deduced a trap composed of 112 places in 210 ms of which 2 ms to minimize.
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1.0 org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 676/3304 variables, and 42 constraints, problems are : Problem set: 0 solved, 2652 unsolved in 20034 ms.
Refiners :[Positive P Invariants (semi-flows): 13/15 constraints, Generalized P Invariants (flows): 28/37 constraints, State Equation: 0/682 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 2652/1398 constraints, Known Traps: 1/1 constraints]
Escalating to Integer solving :Problem set: 0 solved, 2652 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/676 variables, 13/13 constraints. Problems are: Problem set: 0 solved, 2652 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/676 variables, 28/41 constraints. Problems are: Problem set: 0 solved, 2652 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/676 variables, 1/42 constraints. Problems are: Problem set: 0 solved, 2652 unsolved
[2024-06-01 15:53:40] [INFO ] Deduced a trap composed of 3 places in 82 ms of which 1 ms to minimize.
[2024-06-01 15:53:51] [INFO ] Deduced a trap composed of 110 places in 172 ms of which 3 ms to minimize.
Error getting values : (error "ParserException while parsing response: ((s0 0)
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(s31 timeout
org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 676/3304 variables, and 44 constraints, problems are : Problem set: 0 solved, 2652 unsolved in 20028 ms.
Refiners :[Positive P Invariants (semi-flows): 13/15 constraints, Generalized P Invariants (flows): 28/37 constraints, State Equation: 0/682 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 1254/1398 constraints, Known Traps: 3/3 constraints]
After SMT, in 59193ms problems are : Problem set: 0 solved, 2652 unsolved
Search for dead transitions found 0 dead transitions in 59222ms
[2024-06-01 15:53:57] [INFO ] Flow matrix only has 2622 transitions (discarded 36 similar events)
[2024-06-01 15:53:57] [INFO ] Invariant cache hit.
[2024-06-01 15:53:58] [INFO ] Implicit Places using invariants in 582 ms returned [64, 183, 462, 522, 657, 662]
Discarding 6 places :
Implicit Place search using SMT only with invariants took 606 ms to find 6 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 676/685 places, 2658/2661 transitions.
Applied a total of 0 rules in 19 ms. Remains 676 /676 variables (removed 0) and now considering 2658/2658 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 59939 ms. Remains : 676/685 places, 2658/2661 transitions.
Stuttering acceptance computed with spot in 126 ms :[(NOT p1), (OR (NOT p1) (NOT p0)), (OR (NOT p1) (NOT p0)), true, (OR (NOT p0) (NOT p1))]
Running random walk in product with property : PolyORBLF-PT-S06J06T06-LTLFireability-04
Entered a terminal (fully accepting) state of product in 2 steps with 0 reset in 1 ms.
FORMULA PolyORBLF-PT-S06J06T06-LTLFireability-04 FALSE TECHNIQUES STUTTER_TEST
Treatment of property PolyORBLF-PT-S06J06T06-LTLFireability-04 finished in 60106 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((X(F(p0))||G(p1)))'
Support contains 4 out of 685 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 685/685 places, 2661/2661 transitions.
Discarding 2 places :
Symmetric choice reduction at 0 with 2 rule applications. Total rules 2 place count 683 transition count 2659
Iterating global reduction 0 with 2 rules applied. Total rules applied 4 place count 683 transition count 2659
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 5 place count 682 transition count 2658
Iterating global reduction 0 with 1 rules applied. Total rules applied 6 place count 682 transition count 2658
Applied a total of 6 rules in 54 ms. Remains 682 /685 variables (removed 3) and now considering 2658/2661 (removed 3) transitions.
Running 2652 sub problems to find dead transitions.
[2024-06-01 15:53:58] [INFO ] Flow matrix only has 2622 transitions (discarded 36 similar events)
[2024-06-01 15:53:58] [INFO ] Invariant cache hit.
[2024-06-01 15:53:58] [INFO ] State equation strengthened by 168 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/676 variables, 13/13 constraints. Problems are: Problem set: 0 solved, 2652 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/676 variables, 28/41 constraints. Problems are: Problem set: 0 solved, 2652 unsolved
[2024-06-01 15:54:38] [INFO ] Deduced a trap composed of 110 places in 144 ms of which 2 ms to minimize.
SMT process timed out in 39861ms, After SMT, problems are : Problem set: 0 solved, 2652 unsolved
Search for dead transitions found 0 dead transitions in 39884ms
[2024-06-01 15:54:38] [INFO ] Flow matrix only has 2622 transitions (discarded 36 similar events)
[2024-06-01 15:54:38] [INFO ] Invariant cache hit.
[2024-06-01 15:54:38] [INFO ] Implicit Places using invariants in 647 ms returned [64, 183, 462, 522, 657, 662]
Discarding 6 places :
Implicit Place search using SMT only with invariants took 663 ms to find 6 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 676/685 places, 2658/2661 transitions.
Applied a total of 0 rules in 167 ms. Remains 676 /676 variables (removed 0) and now considering 2658/2658 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 40775 ms. Remains : 676/685 places, 2658/2661 transitions.
Stuttering acceptance computed with spot in 83 ms :[(NOT p0), (AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1))]
Running random walk in product with property : PolyORBLF-PT-S06J06T06-LTLFireability-10
Stuttering criterion allowed to conclude after 7 steps with 0 reset in 1 ms.
FORMULA PolyORBLF-PT-S06J06T06-LTLFireability-10 FALSE TECHNIQUES STUTTER_TEST
Treatment of property PolyORBLF-PT-S06J06T06-LTLFireability-10 finished in 40877 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(G((G(p0)||X(p1)))))'
Support contains 8 out of 685 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 685/685 places, 2661/2661 transitions.
Discarding 2 places :
Symmetric choice reduction at 0 with 2 rule applications. Total rules 2 place count 683 transition count 2659
Iterating global reduction 0 with 2 rules applied. Total rules applied 4 place count 683 transition count 2659
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 5 place count 682 transition count 2658
Iterating global reduction 0 with 1 rules applied. Total rules applied 6 place count 682 transition count 2658
Applied a total of 6 rules in 103 ms. Remains 682 /685 variables (removed 3) and now considering 2658/2661 (removed 3) transitions.
Running 2652 sub problems to find dead transitions.
[2024-06-01 15:54:39] [INFO ] Flow matrix only has 2622 transitions (discarded 36 similar events)
[2024-06-01 15:54:39] [INFO ] Invariant cache hit.
[2024-06-01 15:54:39] [INFO ] State equation strengthened by 168 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/676 variables, 13/13 constraints. Problems are: Problem set: 0 solved, 2652 unsolved
SMT process timed out in 43021ms, After SMT, problems are : Problem set: 0 solved, 2652 unsolved
Search for dead transitions found 0 dead transitions in 43069ms
[2024-06-01 15:55:22] [INFO ] Flow matrix only has 2622 transitions (discarded 36 similar events)
[2024-06-01 15:55:22] [INFO ] Invariant cache hit.
[2024-06-01 15:55:23] [INFO ] Implicit Places using invariants in 757 ms returned [64, 183, 462, 522, 657, 662]
Discarding 6 places :
Implicit Place search using SMT only with invariants took 770 ms to find 6 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 676/685 places, 2658/2661 transitions.
Applied a total of 0 rules in 20 ms. Remains 676 /676 variables (removed 0) and now considering 2658/2658 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 43972 ms. Remains : 676/685 places, 2658/2661 transitions.
Stuttering acceptance computed with spot in 169 ms :[true, (NOT p1), (AND (NOT p1) (NOT p0)), (NOT p0), (AND (NOT p1) (NOT p0)), (AND (NOT p0) (NOT p1))]
Running random walk in product with property : PolyORBLF-PT-S06J06T06-LTLFireability-13
Entered a terminal (fully accepting) state of product in 4947 steps with 31 reset in 42 ms.
FORMULA PolyORBLF-PT-S06J06T06-LTLFireability-13 FALSE TECHNIQUES STUTTER_TEST
Treatment of property PolyORBLF-PT-S06J06T06-LTLFireability-13 finished in 44202 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(F((p0||G(p1)))))'
Support contains 3 out of 685 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 685/685 places, 2661/2661 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 684 transition count 2660
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 684 transition count 2660
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 3 place count 683 transition count 2659
Iterating global reduction 0 with 1 rules applied. Total rules applied 4 place count 683 transition count 2659
Applied a total of 4 rules in 59 ms. Remains 683 /685 variables (removed 2) and now considering 2659/2661 (removed 2) transitions.
Running 2653 sub problems to find dead transitions.
[2024-06-01 15:55:23] [INFO ] Flow matrix only has 2623 transitions (discarded 36 similar events)
// Phase 1: matrix 2623 rows 683 cols
[2024-06-01 15:55:23] [INFO ] Computed 52 invariants in 91 ms
[2024-06-01 15:55:23] [INFO ] State equation strengthened by 168 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/677 variables, 19/19 constraints. Problems are: Problem set: 0 solved, 2653 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/677 variables, 22/41 constraints. Problems are: Problem set: 0 solved, 2653 unsolved
[2024-06-01 15:56:02] [INFO ] Deduced a trap composed of 112 places in 224 ms of which 3 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 677/3306 variables, and 42 constraints, problems are : Problem set: 0 solved, 2653 unsolved in 20029 ms.
Refiners :[Positive P Invariants (semi-flows): 19/20 constraints, Generalized P Invariants (flows): 22/32 constraints, State Equation: 0/683 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 2653/1399 constraints, Known Traps: 1/1 constraints]
Escalating to Integer solving :Problem set: 0 solved, 2653 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/677 variables, 19/19 constraints. Problems are: Problem set: 0 solved, 2653 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/677 variables, 22/41 constraints. Problems are: Problem set: 0 solved, 2653 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/677 variables, 1/42 constraints. Problems are: Problem set: 0 solved, 2653 unsolved
[2024-06-01 15:56:06] [INFO ] Deduced a trap composed of 3 places in 78 ms of which 1 ms to minimize.
[2024-06-01 15:56:10] [INFO ] Deduced a trap composed of 112 places in 140 ms of which 2 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 677/3306 variables, and 44 constraints, problems are : Problem set: 0 solved, 2653 unsolved in 20030 ms.
Refiners :[Positive P Invariants (semi-flows): 19/20 constraints, Generalized P Invariants (flows): 22/32 constraints, State Equation: 0/683 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 1254/1399 constraints, Known Traps: 3/3 constraints]
After SMT, in 59872ms problems are : Problem set: 0 solved, 2653 unsolved
Search for dead transitions found 0 dead transitions in 59897ms
[2024-06-01 15:56:23] [INFO ] Flow matrix only has 2623 transitions (discarded 36 similar events)
[2024-06-01 15:56:23] [INFO ] Invariant cache hit.
[2024-06-01 15:56:24] [INFO ] Implicit Places using invariants in 709 ms returned [64, 183, 463, 523, 658, 663]
Discarding 6 places :
Implicit Place search using SMT only with invariants took 745 ms to find 6 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 677/685 places, 2659/2661 transitions.
Applied a total of 0 rules in 19 ms. Remains 677 /677 variables (removed 0) and now considering 2659/2659 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 60726 ms. Remains : 677/685 places, 2659/2661 transitions.
Stuttering acceptance computed with spot in 57 ms :[(AND (NOT p1) (NOT p0)), (AND (NOT p1) (NOT p0))]
Running random walk in product with property : PolyORBLF-PT-S06J06T06-LTLFireability-14
Stuttering criterion allowed to conclude after 7 steps with 0 reset in 1 ms.
FORMULA PolyORBLF-PT-S06J06T06-LTLFireability-14 FALSE TECHNIQUES STUTTER_TEST
Treatment of property PolyORBLF-PT-S06J06T06-LTLFireability-14 finished in 60803 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F(G((p0&&(X(p1)||G(p2))))))'
Support contains 5 out of 685 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 685/685 places, 2661/2661 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 44 transitions
Trivial Post-agglo rules discarded 44 transitions
Performed 44 trivial Post agglomeration. Transition count delta: 44
Iterating post reduction 0 with 44 rules applied. Total rules applied 44 place count 685 transition count 2617
Reduce places removed 44 places and 0 transitions.
Iterating post reduction 1 with 44 rules applied. Total rules applied 88 place count 641 transition count 2617
Performed 83 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 83 Pre rules applied. Total rules applied 88 place count 641 transition count 2534
Deduced a syphon composed of 83 places in 1 ms
Reduce places removed 83 places and 0 transitions.
Iterating global reduction 2 with 166 rules applied. Total rules applied 254 place count 558 transition count 2534
Performed 73 Post agglomeration using F-continuation condition.Transition count delta: 73
Deduced a syphon composed of 73 places in 2 ms
Reduce places removed 73 places and 0 transitions.
Iterating global reduction 2 with 146 rules applied. Total rules applied 400 place count 485 transition count 2461
Applied a total of 400 rules in 135 ms. Remains 485 /685 variables (removed 200) and now considering 2461/2661 (removed 200) transitions.
Running 2455 sub problems to find dead transitions.
[2024-06-01 15:56:24] [INFO ] Flow matrix only has 2425 transitions (discarded 36 similar events)
// Phase 1: matrix 2425 rows 485 cols
[2024-06-01 15:56:24] [INFO ] Computed 52 invariants in 30 ms
[2024-06-01 15:56:24] [INFO ] State equation strengthened by 168 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/479 variables, 21/21 constraints. Problems are: Problem set: 0 solved, 2455 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/479 variables, 24/45 constraints. Problems are: Problem set: 0 solved, 2455 unsolved
[2024-06-01 15:56:58] [INFO ] Deduced a trap composed of 15 places in 262 ms of which 2 ms to minimize.
[2024-06-01 15:56:59] [INFO ] Deduced a trap composed of 26 places in 300 ms of which 2 ms to minimize.
[2024-06-01 15:56:59] [INFO ] Deduced a trap composed of 55 places in 271 ms of which 2 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 479/2910 variables, and 48 constraints, problems are : Problem set: 0 solved, 2455 unsolved in 20034 ms.
Refiners :[Positive P Invariants (semi-flows): 21/21 constraints, Generalized P Invariants (flows): 24/31 constraints, State Equation: 0/485 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 2455/1201 constraints, Known Traps: 3/3 constraints]
Escalating to Integer solving :Problem set: 0 solved, 2455 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/479 variables, 21/21 constraints. Problems are: Problem set: 0 solved, 2455 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/479 variables, 24/45 constraints. Problems are: Problem set: 0 solved, 2455 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/479 variables, 3/48 constraints. Problems are: Problem set: 0 solved, 2455 unsolved
[2024-06-01 15:57:06] [INFO ] Deduced a trap composed of 58 places in 109 ms of which 1 ms to minimize.
[2024-06-01 15:57:06] [INFO ] Deduced a trap composed of 60 places in 67 ms of which 0 ms to minimize.
[2024-06-01 15:57:06] [INFO ] Deduced a trap composed of 59 places in 63 ms of which 1 ms to minimize.
[2024-06-01 15:57:07] [INFO ] Deduced a trap composed of 59 places in 58 ms of which 1 ms to minimize.
[2024-06-01 15:57:13] [INFO ] Deduced a trap composed of 151 places in 239 ms of which 2 ms to minimize.
[2024-06-01 15:57:16] [INFO ] Deduced a trap composed of 145 places in 232 ms of which 2 ms to minimize.
[2024-06-01 15:57:21] [INFO ] Deduced a trap composed of 58 places in 63 ms of which 1 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 479/2910 variables, and 55 constraints, problems are : Problem set: 0 solved, 2455 unsolved in 20031 ms.
Refiners :[Positive P Invariants (semi-flows): 21/21 constraints, Generalized P Invariants (flows): 24/31 constraints, State Equation: 0/485 constraints, ReadFeed: 0/168 constraints, PredecessorRefiner: 1254/1201 constraints, Known Traps: 10/10 constraints]
After SMT, in 58809ms problems are : Problem set: 0 solved, 2455 unsolved
Search for dead transitions found 0 dead transitions in 58831ms
[2024-06-01 15:57:23] [INFO ] Flow matrix only has 2425 transitions (discarded 36 similar events)
[2024-06-01 15:57:23] [INFO ] Invariant cache hit.
[2024-06-01 15:57:23] [INFO ] Implicit Places using invariants in 511 ms returned [46, 127, 324, 368, 466, 470]
Discarding 6 places :
Implicit Place search using SMT only with invariants took 534 ms to find 6 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 479/685 places, 2461/2661 transitions.
Discarding 3 places :
Symmetric choice reduction at 0 with 3 rule applications. Total rules 3 place count 476 transition count 2458
Iterating global reduction 0 with 3 rules applied. Total rules applied 6 place count 476 transition count 2458
Applied a total of 6 rules in 58 ms. Remains 476 /479 variables (removed 3) and now considering 2458/2461 (removed 3) transitions.
[2024-06-01 15:57:23] [INFO ] Flow matrix only has 2422 transitions (discarded 36 similar events)
// Phase 1: matrix 2422 rows 476 cols
[2024-06-01 15:57:23] [INFO ] Computed 46 invariants in 33 ms
[2024-06-01 15:57:24] [INFO ] Implicit Places using invariants in 653 ms returned []
[2024-06-01 15:57:24] [INFO ] Flow matrix only has 2422 transitions (discarded 36 similar events)
[2024-06-01 15:57:24] [INFO ] Invariant cache hit.
[2024-06-01 15:57:25] [INFO ] State equation strengthened by 168 read => feed constraints.
[2024-06-01 15:57:47] [INFO ] Implicit Places using invariants and state equation in 23283 ms returned []
Implicit Place search using SMT with State Equation took 23937 ms to find 0 implicit places.
Starting structural reductions in SI_LTL mode, iteration 2 : 476/685 places, 2458/2661 transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 83501 ms. Remains : 476/685 places, 2458/2661 transitions.
Stuttering acceptance computed with spot in 154 ms :[(OR (NOT p0) (AND (NOT p1) (NOT p2))), (OR (NOT p0) (AND (NOT p1) (NOT p2))), (OR (NOT p0) (AND (NOT p1) (NOT p2))), (OR (NOT p0) (AND (NOT p1) (NOT p2)))]
Running random walk in product with property : PolyORBLF-PT-S06J06T06-LTLFireability-15
Stuttering criterion allowed to conclude after 127 steps with 0 reset in 3 ms.
FORMULA PolyORBLF-PT-S06J06T06-LTLFireability-15 FALSE TECHNIQUES STUTTER_TEST
Treatment of property PolyORBLF-PT-S06J06T06-LTLFireability-15 finished in 83683 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G(F(p0)))'
[2024-06-01 15:57:48] [INFO ] Flatten gal took : 287 ms
[2024-06-01 15:57:48] [INFO ] Export to MCC of 1 properties in file /home/mcc/execution/LTLFireability.sr.xml took 3 ms.
[2024-06-01 15:57:48] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 685 places, 2661 transitions and 15828 arcs took 42 ms.
Total runtime 1194702 ms.
There are residual formulas that ITS could not solve within timeout
Could not compute solution for formula : PolyORBLF-PT-S06J06T06-LTLFireability-01

BK_STOP 1717257871108

--------------------
content from stderr:

+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
+ export PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ export LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
+ LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202405141337.jar
+ VERSION=202405141337
+ echo 'Running Version 202405141337'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination LTLFireability -timeout 360 -rebuildPNML
mcc2024
ltl formula name PolyORBLF-PT-S06J06T06-LTLFireability-01
ltl formula formula --ltl=/tmp/1293/ltl_0_
pnml2lts-mc( 0/ 4): Loading model from model.pnml
pnml2lts-mc( 0/ 4): Edge label is id
Warning: program compiled against libxml 210 using older 209
Warning: program compiled against libxml 210 using older 209
Warning: program compiled against libxml 210 using older 209
Warning: program compiled against libxml 210 using older 209
pnml2lts-mc( 0/ 4): Petri net has 685 places, 2661 transitions and 15828 arcs
pnml2lts-mc( 0/ 4): Petri net Petri analyzed
pnml2lts-mc( 0/ 4): There are no safe places
pnml2lts-mc( 0/ 4): Loading Petri net took 0.460 real 0.120 user 0.080 sys
pnml2lts-mc( 1/ 4): LTL layer: formula: /tmp/1293/ltl_0_
pnml2lts-mc( 2/ 4): LTL layer: formula: /tmp/1293/ltl_0_
pnml2lts-mc( 0/ 4): LTL layer: formula: /tmp/1293/ltl_0_
pnml2lts-mc( 3/ 4): LTL layer: formula: /tmp/1293/ltl_0_
pnml2lts-mc( 0/ 4): buchi has 2 states
pnml2lts-mc( 0/ 4): Weak Buchi automaton detected, adding non-accepting as progress label.
pnml2lts-mc( 0/ 4): There are 712 state labels and 1 edge labels
pnml2lts-mc( 0/ 4): State length is 686, there are 2734 groups
pnml2lts-mc( 0/ 4): Running ufscc using 4 cores
pnml2lts-mc( 0/ 4): Using a tree table with 2^25 elements
pnml2lts-mc( 0/ 4): Successor permutation: dynamic
pnml2lts-mc( 0/ 4): Global bits: 0, count bits: 0, local bits: 0
pnml2lts-mc( 1/ 4): ~212 levels ~10000 states ~31872 transitions
pnml2lts-mc( 1/ 4): ~229 levels ~20000 states ~69992 transitions
pnml2lts-mc( 1/ 4): ~491 levels ~40000 states ~192080 transitions
pnml2lts-mc( 1/ 4): ~491 levels ~80000 states ~344596 transitions
pnml2lts-mc( 2/ 4): ~1115 levels ~160000 states ~636788 transitions
pnml2lts-mc( 2/ 4): ~2376 levels ~320000 states ~1270796 transitions
pnml2lts-mc( 3/ 4): ~1662 levels ~640000 states ~2560516 transitions
pnml2lts-mc( 3/ 4): ~2594 levels ~1280000 states ~5161700 transitions
pnml2lts-mc( 3/ 4): ~22947 levels ~2560000 states ~10325528 transitions
pnml2lts-mc( 3/ 4): ~184009 levels ~5120000 states ~19172448 transitions
pnml2lts-mc( 2/ 4): Error: tree leafs table full! Change -s/--ratio.
pnml2lts-mc( 0/ 4):
pnml2lts-mc( 0/ 4): total scc count: 5699655
pnml2lts-mc( 0/ 4): unique states count: 6456429
pnml2lts-mc( 0/ 4): unique transitions count: 25988280
pnml2lts-mc( 0/ 4): - self-loop count: 63267
pnml2lts-mc( 0/ 4): - claim dead count: 18408953
pnml2lts-mc( 0/ 4): - claim found count: 127807
pnml2lts-mc( 0/ 4): - claim success count: 6456459
pnml2lts-mc( 0/ 4): - cum. max stack depth: 681804
pnml2lts-mc( 0/ 4):
pnml2lts-mc( 0/ 4): Explored 6456463 states 25988648 transitions, fanout: 4.025
pnml2lts-mc( 0/ 4): Total exploration time 401.020 sec (401.010 sec minimum, 401.013 sec on average)
pnml2lts-mc( 0/ 4): States per second: 16100, Transitions per second: 64806
pnml2lts-mc( 0/ 4):
pnml2lts-mc( 0/ 4): Queue width: 12B, total height: 0, memory: 0.00MB
pnml2lts-mc( 0/ 4): Tree memory: 119.5MB, 17.2 B/state, compr.: 0.6%
pnml2lts-mc( 0/ 4): Tree fill ratio (roots/leafs): 21.0%/99.0%
pnml2lts-mc( 0/ 4): Stored 2718 string chucks using 0MB
pnml2lts-mc( 0/ 4): Total memory used for chunk indexing: 0MB
pnml2lts-mc( 0/ 4): Est. total memory use: 119.5MB (~256.0MB paged-in)

Sequence of Actions to be Executed by the VM

This is useful if one wants to reexecute the tool in the VM from the submitted image disk.

set -x
# this is for BenchKit: configuration of major elements for the test
export BK_INPUT="PolyORBLF-PT-S06J06T06"
export BK_EXAMINATION="LTLFireability"
export BK_TOOL="ltsminxred"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"
export BK_BIN_PATH="/home/mcc/BenchKit/bin/"

# this is specific to your benchmark or test

export BIN_DIR="$HOME/BenchKit/bin"

# remove the execution directoty if it exists (to avoid increse of .vmdk images)
if [ -d execution ] ; then
rm -rf execution
fi

# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-5568"
echo " Executing tool ltsminxred"
echo " Input is PolyORBLF-PT-S06J06T06, examination is LTLFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r516-tajo-171654446900348"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/PolyORBLF-PT-S06J06T06.tgz
mv PolyORBLF-PT-S06J06T06 execution
cd execution
if [ "LTLFireability" = "ReachabilityDeadlock" ] || [ "LTLFireability" = "UpperBounds" ] || [ "LTLFireability" = "QuasiLiveness" ] || [ "LTLFireability" = "StableMarking" ] || [ "LTLFireability" = "Liveness" ] || [ "LTLFireability" = "OneSafe" ] || [ "LTLFireability" = "StateSpace" ]; then
rm -f GenericPropertiesVerdict.xml
fi
pwd
ls -lh

echo
echo "--------------------"
echo "content from stdout:"
echo
echo "=== Data for post analysis generated by BenchKit (invocation template)"
echo
if [ "LTLFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "LTLFireability" != "StateSpace" ] ; then
echo "The expected result is a vector of booleans"
echo BOOL_VECTOR
else
echo "no data necessary for post analysis"
fi
echo
if [ -f "LTLFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property LTLFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "LTLFireability.xml" ] ; then # for cunf (txt files deleted;-)
echo echo "here is the order used to build the result vector(from xml file)"
for x in $(grep '' LTLFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "LTLFireability" = "ReachabilityDeadlock" ] || [ "LTLFireability" = "QuasiLiveness" ] || [ "LTLFireability" = "StableMarking" ] || [ "LTLFireability" = "Liveness" ] || [ "LTLFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME LTLFireability"
fi
echo
echo "=== Now, execution of the tool begins"
echo
echo -n "BK_START "
date -u +%s%3N
echo
timeout -s 9 $BK_TIME_CONFINEMENT bash -c "/home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n \"BK_STOP \" ; date -u +%s%3N"
if [ $? -eq 137 ] ; then
echo
echo "BK_TIME_CONFINEMENT_REACHED"
fi
echo
echo "--------------------"
echo "content from stderr:"
echo
cat STDERR ;