About the Execution of ITS-Tools for Philosophers-COL-000100
| Execution Summary | |||||
| Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
| 468.752 | 102843.00 | 143090.00 | 410.60 | FFFTFTFFTFFFFFTF | normal |
Execution Chart
We display below the execution chart for this examination (boot time has been removed).
Trace from the execution
Formatting '/data/fkordon/mcc2026-input.r210-smll-177969941900035.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2026-input.qcow2 backing_fmt=qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................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=====================================================================
Generated by BenchKit 2-5973
Executing tool itstools
Input is Philosophers-COL-000100, examination is LTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r210-smll-177969941900035
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 536K
-rw-r--r-- 1 mcc users 8.3K Mar 5 10:35 CTLCardinality.txt
-rw-r--r-- 1 mcc users 86K Mar 5 10:35 CTLCardinality.xml
-rw-r--r-- 1 mcc users 4.8K Mar 5 10:34 CTLFireability.txt
-rw-r--r-- 1 mcc users 38K Mar 5 10:34 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Mar 3 18:30 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.8K Mar 3 18:30 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.9K Mar 16 08:36 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K Mar 16 08:36 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K Mar 16 08:36 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K Mar 16 08:36 LTLFireability.xml
-rw-r--r-- 1 mcc users 17K Mar 5 10:35 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 184K Mar 5 10:35 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 7.9K Mar 5 10:35 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 65K Mar 5 10:35 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Mar 16 08:36 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Mar 16 08:36 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 3 18:30 equiv_pt
-rw-r--r-- 1 mcc users 7 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 5 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 14K Mar 3 18:30 model.pnml
--------------------
content from stdout:
=== Data for post analysis generated by BenchKit (invocation template)
The expected result is a vector of booleans
BOOL_VECTOR
echo here is the order used to build the result vector(from xml file)
FORMULA_NAME Philosophers-COL-000100-LTLCardinality-00
FORMULA_NAME Philosophers-COL-000100-LTLCardinality-01
FORMULA_NAME Philosophers-COL-000100-LTLCardinality-02
FORMULA_NAME Philosophers-COL-000100-LTLCardinality-03
FORMULA_NAME Philosophers-COL-000100-LTLCardinality-04
FORMULA_NAME Philosophers-COL-000100-LTLCardinality-05
FORMULA_NAME Philosophers-COL-000100-LTLCardinality-06
FORMULA_NAME Philosophers-COL-000100-LTLCardinality-07
FORMULA_NAME Philosophers-COL-000100-LTLCardinality-08
FORMULA_NAME Philosophers-COL-000100-LTLCardinality-09
FORMULA_NAME Philosophers-COL-000100-LTLCardinality-10
FORMULA_NAME Philosophers-COL-000100-LTLCardinality-11
FORMULA_NAME Philosophers-COL-000100-LTLCardinality-12
FORMULA_NAME Philosophers-COL-000100-LTLCardinality-13
FORMULA_NAME Philosophers-COL-000100-LTLCardinality-14
FORMULA_NAME Philosophers-COL-000100-LTLCardinality-15
=== Now, execution of the tool begins
BK_START 1779788414084
Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=LTLCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=Philosophers-COL-000100
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is COL
LTLCardinality COL
Running Version 202604301425
[2026-05-26 09:40:16] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, LTLCardinality, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2026-05-26 09:40:16] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-26 09:40:16] [INFO ] Detected file is not PT type :http://www.pnml.org/version-2009/grammar/symmetricnet
log4j:WARN No appenders could be found for logger (org.apache.axiom.locator.DefaultOMMetaFactoryLocator).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
[2026-05-26 09:40:17] [WARNING] Using fallBack plugin, rng conformance not checked
[2026-05-26 09:40:17] [INFO ] Load time of PNML (colored model parsed with PNMLFW) : 1215 ms
[2026-05-26 09:40:17] [INFO ] Imported 5 HL places and 5 HL transitions for a total of 500 PT places and 500.0 transition bindings in 38 ms.
Parsed 16 properties from file /home/mcc/execution/LTLCardinality.xml in 31 ms.
Working with output stream class java.io.PrintStream
[2026-05-26 09:40:17] [INFO ] Built PT skeleton of HLPN with 5 places and 5 transitions 15 arcs in 9 ms.
[2026-05-26 09:40:17] [INFO ] Skeletonized 16 HLPN properties in 2 ms.
Initial state reduction rules removed 4 formulas.
FORMULA Philosophers-COL-000100-LTLCardinality-00 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Philosophers-COL-000100-LTLCardinality-03 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Philosophers-COL-000100-LTLCardinality-05 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Philosophers-COL-000100-LTLCardinality-14 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Computed a total of 0 stabilizing places and 0 stable transitions
Remains 12 properties that can be checked using skeleton over-approximation.
Computed a total of 0 stabilizing places and 0 stable transitions
RANDOM walk for 40293 steps (391 resets) in 289 ms. (138 steps per ms) remains 3/19 properties
BEST_FIRST walk for 40002 steps (8 resets) in 287 ms. (138 steps per ms) remains 1/3 properties
BEST_FIRST walk for 40002 steps (8 resets) in 252 ms. (158 steps per ms) remains 1/1 properties
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-12858479712624542775.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-6959835378072013308.kers'
[2026-05-26 09:40:18] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-12858479712624542775.kers, --Pflows, --basisKERS=/tmp/petrispot-output-6959835378072013308.kers]
Culled 0 columns in 0 ms.
// Phase 1: matrix 5 rows 5 cols 15 entries
Finished phase 1 with 3 SingleSign rule and 0 generalized
[2026-05-26 09:40:18] [INFO ] Computed 2 invariants in 0 ms
Computed 2 P flows in 1 ms.
Exported basis to /tmp/petrispot-output-6959835378072013308.kers
Total runtime 2 ms.
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Problem AtomicPropp3 is UNSAT
After SMT solving in domain Real declared 5/10 variables, and 2 constraints, problems are : Problem set: 1 solved, 0 unsolved in 155 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, State Equation: 0/5 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 397ms problems are : Problem set: 1 solved, 0 unsolved
Skipping Parikh replay, no witness traces provided.
Successfully simplified 1 atomic propositions for a total of 12 simplifications.
[2026-05-26 09:40:18] [INFO ] Flatten gal took : 22 ms
[2026-05-26 09:40:18] [INFO ] Flatten gal took : 3 ms
Arc [1:1*[(MOD (ADD (MOD (MINUS $x 1) 100) 100) 100)]] contains successor/predecessor on variables of sort Philo
[2026-05-26 09:40:18] [INFO ] Unfolded HLPN to a Petri net with 500 places and 500 transitions 1600 arcs in 49 ms.
[2026-05-26 09:40:18] [INFO ] Unfolded 12 HLPN properties in 1 ms.
Support contains 500 out of 500 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 500/500 places, 500/500 transitions.
Applied a total of 0 rules in 14 ms. Remains 500 /500 variables (removed 0) and now considering 500/500 (removed 0) transitions.
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-821492237657357351.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-4013166957989347194.kers'
[2026-05-26 09:40:19] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-821492237657357351.kers, --Pflows, --basisKERS=/tmp/petrispot-output-4013166957989347194.kers]
Culled 0 columns in 1 ms.
// Phase 1: matrix 500 rows 500 cols 1600 entries
Finished phase 1 with 300 SingleSign rule and 0 generalized
[2026-05-26 09:40:19] [INFO ] Computed 200 invariants in 8 ms
Computed 200 P flows in 11 ms.
Exported basis to /tmp/petrispot-output-4013166957989347194.kers
Total runtime 13 ms.
[2026-05-26 09:40:19] [INFO ] Implicit Places using invariants in 375 ms returned []
[2026-05-26 09:40:19] [INFO ] Invariant cache hit.
[2026-05-26 09:40:20] [INFO ] Implicit Places using invariants and state equation in 992 ms returned []
Implicit Place search using SMT with State Equation took 1385 ms to find 0 implicit places.
Running 300 sub problems to find dead transitions.
[2026-05-26 09:40:20] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/400 variables, 100/100 constraints. Problems are: Problem set: 0 solved, 300 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/400 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 300 unsolved
At refinement iteration 2 (OVERLAPS) 100/500 variables, 100/200 constraints. Problems are: Problem set: 0 solved, 300 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/500 variables, 0/200 constraints. Problems are: Problem set: 0 solved, 300 unsolved
At refinement iteration 4 (OVERLAPS) 500/1000 variables, 500/700 constraints. Problems are: Problem set: 0 solved, 300 unsolved
Error getting values : (error "Timeout of Z3 solver reached")
Error getting values : (error "Error writing to Z3 solver: java.io.IOException: Stream closed")
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 1000/1000 variables, and 700 constraints, problems are : Problem set: 0 solved, 300 unsolved in 30032 ms.
Refiners :[Positive P Invariants (semi-flows): 200/200 constraints, State Equation: 500/500 constraints, PredecessorRefiner: 300/300 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 300 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/400 variables, 100/100 constraints. Problems are: Problem set: 0 solved, 300 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/400 variables, 0/100 constraints. Problems are: Problem set: 0 solved, 300 unsolved
At refinement iteration 2 (OVERLAPS) 100/500 variables, 100/200 constraints. Problems are: Problem set: 0 solved, 300 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/500 variables, 0/200 constraints. Problems are: Problem set: 0 solved, 300 unsolved
At refinement iteration 4 (OVERLAPS) 500/1000 variables, 500/700 constraints. Problems are: Problem set: 0 solved, 300 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/1000 variables, 300/1000 constraints. Problems are: Problem set: 0 solved, 300 unsolved
Error getting values : (error "Timeout of Z3 solver reached")
Error getting values : (error "Error writing to Z3 solver: java.io.IOException: Stream closed")
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 1000/1000 variables, and 1000 constraints, problems are : Problem set: 0 solved, 300 unsolved in 30019 ms.
Refiners :[Positive P Invariants (semi-flows): 200/200 constraints, State Equation: 500/500 constraints, PredecessorRefiner: 300/300 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 60253ms problems are : Problem set: 0 solved, 300 unsolved
Search for dead transitions found 0 dead transitions in 60265ms
Finished structural reductions in LTL mode , in 1 iterations and 61718 ms. Remains : 500/500 places, 500/500 transitions.
Starting structural reductions in LTL mode, iteration 0 : 500/500 places, 500/500 transitions.
Applied a total of 0 rules in 4 ms. Remains 500 /500 variables (removed 0) and now considering 500/500 (removed 0) transitions.
[2026-05-26 09:41:20] [INFO ] Invariant cache hit.
[2026-05-26 09:41:20] [INFO ] Implicit Places using invariants in 165 ms returned []
[2026-05-26 09:41:20] [INFO ] Invariant cache hit.
[2026-05-26 09:41:21] [INFO ] Implicit Places using invariants and state equation in 407 ms returned []
Implicit Place search using SMT with State Equation took 574 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 582 ms. Remains : 500/500 places, 500/500 transitions.
Support contains 500 out of 500 places after structural reductions.
[2026-05-26 09:41:21] [INFO ] Flatten gal took : 80 ms
[2026-05-26 09:41:21] [INFO ] Flatten gal took : 57 ms
[2026-05-26 09:41:21] [INFO ] Input system was already deterministic with 500 transitions.
RANDOM walk for 40000 steps (8 resets) in 3377 ms. (11 steps per ms) remains 1/19 properties
BEST_FIRST walk for 40004 steps (8 resets) in 718 ms. (55 steps per ms) remains 1/1 properties
[2026-05-26 09:41:23] [INFO ] Invariant cache hit.
Excessive predecessor constraint size, skipping predecessor.
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/200 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Problem AtomicPropp3 is UNSAT
After SMT solving in domain Real declared 500/1000 variables, and 200 constraints, problems are : Problem set: 1 solved, 0 unsolved in 175 ms.
Refiners :[Positive P Invariants (semi-flows): 200/200 constraints, State Equation: 0/500 constraints, PredecessorRefiner: 1/0 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 197ms problems are : Problem set: 1 solved, 0 unsolved
Skipping Parikh replay, no witness traces provided.
Successfully simplified 1 atomic propositions for a total of 12 simplifications.
Computed a total of 0 stabilizing places and 0 stable transitions
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F(G((X(F(p0)) U (p0 U (p1 U p2))))))'
Support contains 400 out of 500 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 500/500 places, 500/500 transitions.
Applied a total of 0 rules in 43 ms. Remains 500 /500 variables (removed 0) and now considering 500/500 (removed 0) transitions.
[2026-05-26 09:41:23] [INFO ] Invariant cache hit.
[2026-05-26 09:41:24] [INFO ] Implicit Places using invariants in 296 ms returned []
[2026-05-26 09:41:24] [INFO ] Invariant cache hit.
[2026-05-26 09:41:24] [INFO ] Implicit Places using invariants and state equation in 618 ms returned []
Implicit Place search using SMT with State Equation took 916 ms to find 0 implicit places.
[2026-05-26 09:41:24] [INFO ] Redundant transitions in 50 ms returned []
Skipped dead transition search.
Finished structural reductions in SI_LTL mode , in 1 iterations and 1016 ms. Remains : 500/500 places, 500/500 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F(G((X(F(p0)) U (p0 U (p1 U p2))))))'
Stuttering acceptance computed with spot in 399 ms :[(NOT p2), (AND (NOT p0) (NOT p2)), (NOT p2), (AND (NOT p0) (NOT p2))]
Running random walk in product with property : Philosophers-COL-000100-LTLCardinality-01
Product exploration explored 100000 steps with 132 reset in 1682 ms.
Stack based approach found an accepted trace after 15692 steps with 28 reset with depth 7867 and stack size 5191 in 253 ms.
FORMULA Philosophers-COL-000100-LTLCardinality-01 FALSE TECHNIQUES STACK_TEST
Treatment of property Philosophers-COL-000100-LTLCardinality-01 finished in 3487 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X((p0&&X(X(G(p1))))))'
Support contains 300 out of 500 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 500/500 places, 500/500 transitions.
Applied a total of 0 rules in 29 ms. Remains 500 /500 variables (removed 0) and now considering 500/500 (removed 0) transitions.
[2026-05-26 09:41:27] [INFO ] Invariant cache hit.
[2026-05-26 09:41:27] [INFO ] Implicit Places using invariants in 248 ms returned []
[2026-05-26 09:41:27] [INFO ] Invariant cache hit.
[2026-05-26 09:41:27] [INFO ] Implicit Places using invariants and state equation in 518 ms returned []
Implicit Place search using SMT with State Equation took 769 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 798 ms. Remains : 500/500 places, 500/500 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X((p0&&X(X(G(p1))))))'
Stuttering acceptance computed with spot in 215 ms :[true, (OR (NOT p0) (NOT p1)), (NOT p1), (NOT p1), (OR (NOT p1) (NOT p0))]
Running random walk in product with property : Philosophers-COL-000100-LTLCardinality-02
Entered a terminal (fully accepting) state of product in 3 steps with 0 reset in 0 ms.
FORMULA Philosophers-COL-000100-LTLCardinality-02 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Philosophers-COL-000100-LTLCardinality-02 finished in 1054 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((((p0||X(F(p1))) U X(p2)) U p3))'
Support contains 500 out of 500 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 500/500 places, 500/500 transitions.
Applied a total of 0 rules in 5 ms. Remains 500 /500 variables (removed 0) and now considering 500/500 (removed 0) transitions.
[2026-05-26 09:41:28] [INFO ] Invariant cache hit.
[2026-05-26 09:41:28] [INFO ] Implicit Places using invariants in 231 ms returned []
[2026-05-26 09:41:28] [INFO ] Invariant cache hit.
[2026-05-26 09:41:28] [INFO ] Implicit Places using invariants and state equation in 501 ms returned []
Implicit Place search using SMT with State Equation took 734 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 739 ms. Remains : 500/500 places, 500/500 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((((p0||X(F(p1))) U X(p2)) U p3))'
Stuttering acceptance computed with spot in 199 ms :[(NOT p3), (AND (NOT p1) (NOT p2)), (NOT p2), (NOT p1)]
Running random walk in product with property : Philosophers-COL-000100-LTLCardinality-04
Product exploration explored 100000 steps with 33390 reset in 4796 ms.
Stack based approach found an accepted trace after 16444 steps with 5331 reset with depth 276 and stack size 257 in 713 ms.
FORMULA Philosophers-COL-000100-LTLCardinality-04 FALSE TECHNIQUES STACK_TEST
Treatment of property Philosophers-COL-000100-LTLCardinality-04 finished in 6512 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G((F(p0)&&F(G(p1)))))'
Support contains 300 out of 500 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 500/500 places, 500/500 transitions.
Applied a total of 0 rules in 28 ms. Remains 500 /500 variables (removed 0) and now considering 500/500 (removed 0) transitions.
[2026-05-26 09:41:34] [INFO ] Invariant cache hit.
[2026-05-26 09:41:35] [INFO ] Implicit Places using invariants in 309 ms returned []
[2026-05-26 09:41:35] [INFO ] Invariant cache hit.
[2026-05-26 09:41:35] [INFO ] Implicit Places using invariants and state equation in 780 ms returned []
Implicit Place search using SMT with State Equation took 1091 ms to find 0 implicit places.
[2026-05-26 09:41:35] [INFO ] Redundant transitions in 9 ms returned []
Skipped dead transition search.
Finished structural reductions in SI_LTL mode , in 1 iterations and 1134 ms. Remains : 500/500 places, 500/500 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G((F(p0)&&F(G(p1)))))'
Stuttering acceptance computed with spot in 137 ms :[(OR (NOT p0) (NOT p1)), (NOT p0), (NOT p1)]
Running random walk in product with property : Philosophers-COL-000100-LTLCardinality-06
Stuttering criterion allowed to conclude after 66570 steps with 12 reset in 1279 ms.
FORMULA Philosophers-COL-000100-LTLCardinality-06 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Philosophers-COL-000100-LTLCardinality-06 finished in 2592 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F(G(!p0)))'
Support contains 100 out of 500 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 500/500 places, 500/500 transitions.
Applied a total of 0 rules in 57 ms. Remains 500 /500 variables (removed 0) and now considering 500/500 (removed 0) transitions.
[2026-05-26 09:41:37] [INFO ] Invariant cache hit.
[2026-05-26 09:41:37] [INFO ] Implicit Places using invariants in 593 ms returned []
[2026-05-26 09:41:37] [INFO ] Invariant cache hit.
[2026-05-26 09:41:38] [INFO ] Implicit Places using invariants and state equation in 945 ms returned []
Implicit Place search using SMT with State Equation took 1540 ms to find 0 implicit places.
[2026-05-26 09:41:38] [INFO ] Redundant transitions in 3 ms returned []
Skipped dead transition search.
Finished structural reductions in SI_LTL mode , in 1 iterations and 1608 ms. Remains : 500/500 places, 500/500 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F(G(p0)))'
Stuttering acceptance computed with spot in 40 ms :[(NOT p0)]
Running random walk in product with property : Philosophers-COL-000100-LTLCardinality-07
Stuttering criterion allowed to conclude after 3460 steps with 0 reset in 46 ms.
FORMULA Philosophers-COL-000100-LTLCardinality-07 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Philosophers-COL-000100-LTLCardinality-07 finished in 1742 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(X(X((p0||(((p1 U G(p2)) U p0) U p1))))))'
Support contains 300 out of 500 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 500/500 places, 500/500 transitions.
Applied a total of 0 rules in 7 ms. Remains 500 /500 variables (removed 0) and now considering 500/500 (removed 0) transitions.
[2026-05-26 09:41:39] [INFO ] Invariant cache hit.
[2026-05-26 09:41:39] [INFO ] Implicit Places using invariants in 278 ms returned []
[2026-05-26 09:41:39] [INFO ] Invariant cache hit.
[2026-05-26 09:41:39] [INFO ] Implicit Places using invariants and state equation in 553 ms returned []
Implicit Place search using SMT with State Equation took 833 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 841 ms. Remains : 500/500 places, 500/500 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(X(X((p0||(((p1 U G(p2)) U p0) U p1))))))'
Stuttering acceptance computed with spot in 331 ms :[(AND (NOT p0) (NOT p1)), (OR (NOT p1) (NOT p2)), (OR (NOT p2) (NOT p1) (NOT p0)), (AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1)), true, (AND (NOT p0) (NOT p1)), (OR (NOT p2) (NOT p0)), (NOT p2)]
Running random walk in product with property : Philosophers-COL-000100-LTLCardinality-08
Product exploration explored 100000 steps with 25000 reset in 2781 ms.
Product exploration explored 100000 steps with 25000 reset in 2786 ms.
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Knowledge based reduction with 1 factoid took 72 ms. Reduced automaton from 9 states, 20 edges and 3 AP (stutter sensitive) to 9 states, 20 edges and 3 AP (stutter sensitive).
RANDOM walk for 40000 steps (9 resets) in 2199 ms. (18 steps per ms) remains 2/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 1205 ms. (33 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40004 steps (8 resets) in 1164 ms. (34 steps per ms) remains 2/2 properties
[2026-05-26 09:41:47] [INFO ] Invariant cache hit.
Problem apf1 is UNSAT
Problem apf4 is UNSAT
After SMT solving in domain Real declared 300/1000 variables, and 0 constraints, problems are : Problem set: 2 solved, 0 unsolved in 78 ms.
Refiners :[Positive P Invariants (semi-flows): 0/200 constraints, State Equation: 0/500 constraints, PredecessorRefiner: 0/0 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 90ms problems are : Problem set: 2 solved, 0 unsolved
Skipping Parikh replay, no witness traces provided.
Found 2 invariant AP formulas.
Property proved to be true by K+ with min(!phi)
Knowledge based reduction with 3 factoid took 17 ms. Proved property starting from automaton with 9 states, 20 edges and 3 AP (stutter sensitive
Knowledge-based reduction took 1545 ms.
FORMULA Philosophers-COL-000100-LTLCardinality-08 TRUE TECHNIQUES KNOWLEDGE
Treatment of property Philosophers-COL-000100-LTLCardinality-08 finished in 8337 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(G((p0||X(X(X(X(!p1))))))))'
Support contains 300 out of 500 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 500/500 places, 500/500 transitions.
Applied a total of 0 rules in 4 ms. Remains 500 /500 variables (removed 0) and now considering 500/500 (removed 0) transitions.
[2026-05-26 09:41:47] [INFO ] Invariant cache hit.
[2026-05-26 09:41:47] [INFO ] Implicit Places using invariants in 455 ms returned []
[2026-05-26 09:41:47] [INFO ] Invariant cache hit.
[2026-05-26 09:41:48] [INFO ] Implicit Places using invariants and state equation in 745 ms returned []
Implicit Place search using SMT with State Equation took 1202 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 1207 ms. Remains : 500/500 places, 500/500 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(G((p0||X(X(X(X(p1))))))))'
Stuttering acceptance computed with spot in 247 ms :[(AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1)), (NOT p1), (NOT p1), (NOT p1), (NOT p1), true]
Running random walk in product with property : Philosophers-COL-000100-LTLCardinality-09
Entered a terminal (fully accepting) state of product in 28 steps with 0 reset in 2 ms.
FORMULA Philosophers-COL-000100-LTLCardinality-09 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Philosophers-COL-000100-LTLCardinality-09 finished in 1493 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X((X(p0) U (F(G(p1))&&G(p2)))))'
Support contains 400 out of 500 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 500/500 places, 500/500 transitions.
Applied a total of 0 rules in 5 ms. Remains 500 /500 variables (removed 0) and now considering 500/500 (removed 0) transitions.
[2026-05-26 09:41:48] [INFO ] Invariant cache hit.
[2026-05-26 09:41:49] [INFO ] Implicit Places using invariants in 293 ms returned []
[2026-05-26 09:41:49] [INFO ] Invariant cache hit.
[2026-05-26 09:41:49] [INFO ] Implicit Places using invariants and state equation in 581 ms returned []
Implicit Place search using SMT with State Equation took 876 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 882 ms. Remains : 500/500 places, 500/500 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X((X(p0) U (F(G(p1))&&G(p2)))))'
Stuttering acceptance computed with spot in 269 ms :[(OR (NOT p1) (NOT p2)), (OR (NOT p1) (NOT p2)), (NOT p0), (NOT p1), (AND (NOT p2) (NOT p0)), true, (AND (NOT p2) p0)]
Running random walk in product with property : Philosophers-COL-000100-LTLCardinality-10
Entered a terminal (fully accepting) state of product in 13 steps with 3 reset in 1 ms.
FORMULA Philosophers-COL-000100-LTLCardinality-10 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Philosophers-COL-000100-LTLCardinality-10 finished in 1193 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((F((!p0&&F(G(p1)))) U X(X(p2))))'
Support contains 300 out of 500 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 500/500 places, 500/500 transitions.
Applied a total of 0 rules in 7 ms. Remains 500 /500 variables (removed 0) and now considering 500/500 (removed 0) transitions.
[2026-05-26 09:41:50] [INFO ] Invariant cache hit.
[2026-05-26 09:41:50] [INFO ] Implicit Places using invariants in 368 ms returned []
[2026-05-26 09:41:50] [INFO ] Invariant cache hit.
[2026-05-26 09:41:51] [INFO ] Implicit Places using invariants and state equation in 714 ms returned []
Implicit Place search using SMT with State Equation took 1086 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 1093 ms. Remains : 500/500 places, 500/500 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((F((!p0&&F(G(p1)))) U X(X(p2))))'
Stuttering acceptance computed with spot in 341 ms :[(NOT p2), (NOT p2), (AND p0 (NOT p2)), (NOT p2), (AND p0 (NOT p2)), (AND p0 (NOT p2)), (NOT p1), p0]
Running random walk in product with property : Philosophers-COL-000100-LTLCardinality-11
Stuttering criterion allowed to conclude after 23641 steps with 0 reset in 243 ms.
FORMULA Philosophers-COL-000100-LTLCardinality-11 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Philosophers-COL-000100-LTLCardinality-11 finished in 1741 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G(F(p0)))'
Support contains 200 out of 500 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 500/500 places, 500/500 transitions.
Applied a total of 0 rules in 15 ms. Remains 500 /500 variables (removed 0) and now considering 500/500 (removed 0) transitions.
[2026-05-26 09:41:51] [INFO ] Invariant cache hit.
[2026-05-26 09:41:52] [INFO ] Implicit Places using invariants in 573 ms returned []
[2026-05-26 09:41:52] [INFO ] Invariant cache hit.
[2026-05-26 09:41:53] [INFO ] Implicit Places using invariants and state equation in 682 ms returned []
Implicit Place search using SMT with State Equation took 1257 ms to find 0 implicit places.
[2026-05-26 09:41:53] [INFO ] Redundant transitions in 2 ms returned []
Skipped dead transition search.
Finished structural reductions in SI_LTL mode , in 1 iterations and 1281 ms. Remains : 500/500 places, 500/500 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G(F(p0)))'
Stuttering acceptance computed with spot in 70 ms :[(NOT p0), (NOT p0)]
Running random walk in product with property : Philosophers-COL-000100-LTLCardinality-12
Stuttering criterion allowed to conclude after 79225 steps with 3 reset in 802 ms.
FORMULA Philosophers-COL-000100-LTLCardinality-12 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Philosophers-COL-000100-LTLCardinality-12 finished in 2180 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((!p0 U X(G(!p1))))'
Support contains 300 out of 500 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 500/500 places, 500/500 transitions.
Applied a total of 0 rules in 3 ms. Remains 500 /500 variables (removed 0) and now considering 500/500 (removed 0) transitions.
[2026-05-26 09:41:53] [INFO ] Invariant cache hit.
[2026-05-26 09:41:54] [INFO ] Implicit Places using invariants in 434 ms returned []
[2026-05-26 09:41:54] [INFO ] Invariant cache hit.
[2026-05-26 09:41:54] [INFO ] Implicit Places using invariants and state equation in 596 ms returned []
Implicit Place search using SMT with State Equation took 1032 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 1036 ms. Remains : 500/500 places, 500/500 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((!p0 U X(G(!p1))))'
Stuttering acceptance computed with spot in 98 ms :[p1, p1, true]
Running random walk in product with property : Philosophers-COL-000100-LTLCardinality-13
Stuttering criterion allowed to conclude after 3907 steps with 0 reset in 243 ms.
FORMULA Philosophers-COL-000100-LTLCardinality-13 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Philosophers-COL-000100-LTLCardinality-13 finished in 1410 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((X(X(X(G((G(p0) U X(p1))))))&&F(p0)))'
Support contains 200 out of 500 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 500/500 places, 500/500 transitions.
Applied a total of 0 rules in 13 ms. Remains 500 /500 variables (removed 0) and now considering 500/500 (removed 0) transitions.
[2026-05-26 09:41:55] [INFO ] Invariant cache hit.
[2026-05-26 09:41:55] [INFO ] Implicit Places using invariants in 371 ms returned []
[2026-05-26 09:41:55] [INFO ] Invariant cache hit.
[2026-05-26 09:41:56] [INFO ] Implicit Places using invariants and state equation in 688 ms returned []
Implicit Place search using SMT with State Equation took 1062 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 1077 ms. Remains : 500/500 places, 500/500 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((X(X(X(G((G(p0) U X(p1))))))&&F(p0)))'
Stuttering acceptance computed with spot in 391 ms :[(OR (NOT p1) (NOT p0)), (NOT p1), (NOT p0), (NOT p1), (NOT p1), (NOT p1), (NOT p1), true, (NOT p0)]
Running random walk in product with property : Philosophers-COL-000100-LTLCardinality-15
Entered a terminal (fully accepting) state of product in 505 steps with 10 reset in 14 ms.
FORMULA Philosophers-COL-000100-LTLCardinality-15 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Philosophers-COL-000100-LTLCardinality-15 finished in 1524 ms.
All properties solved by simple procedures.
Total runtime 100708 ms.
BK_STOP 1779788516927
--------------------
content from stderr:
+ export BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ LTLCardinality = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution LTLCardinality -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202604301425.jar
+ VERSION=202604301425
+ echo 'Running Version 202604301425'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination LTLCardinality -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
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="Philosophers-COL-000100"
export BK_EXAMINATION="LTLCardinality"
export BK_TOOL="itstools"
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 2-5973"
echo " Executing tool itstools"
echo " Input is Philosophers-COL-000100, examination is LTLCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r210-smll-177969941900035"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/Philosophers-COL-000100.tgz
mv Philosophers-COL-000100 execution
cd execution
if [ "LTLCardinality" = "ReachabilityDeadlock" ] || [ "LTLCardinality" = "UpperBounds" ] || [ "LTLCardinality" = "QuasiLiveness" ] || [ "LTLCardinality" = "StableMarking" ] || [ "LTLCardinality" = "Liveness" ] || [ "LTLCardinality" = "OneSafe" ] || [ "LTLCardinality" = "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 [ "LTLCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "LTLCardinality" != "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 "LTLCardinality.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 '
echo "FORMULA_NAME $x"
done
elif [ "LTLCardinality" = "ReachabilityDeadlock" ] || [ "LTLCardinality" = "QuasiLiveness" ] || [ "LTLCardinality" = "StableMarking" ] || [ "LTLCardinality" = "Liveness" ] || [ "LTLCardinality" = "OneSafe" ] ; then
echo "FORMULA_NAME LTLCardinality"
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 ;