fond
Model Checking Contest 2024
14th edition, Geneva, Switzerland, June 25, 2024
Execution of r351-tall-171679102600533
Last Updated
July 7, 2024

About the Execution of 2023-gold for SharedMemory-PT-000200

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
0.000 562614.00 0.00 0.00 FFFT?F????FF???? normal

Execution Chart

Sorry, for this execution, no execution chart could be reported.

Trace from the execution

Formatting '/data/fkordon/mcc2024-input.r351-tall-171679102600533.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2024-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 2-5568
Executing tool gold2023
Input is SharedMemory-PT-000200, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r351-tall-171679102600533
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 505M
-rw-r--r-- 1 mcc users 18M Apr 14 12:19 CTLCardinality.txt
-rw-r--r-- 1 mcc users 66M Apr 14 12:18 CTLCardinality.xml
-rw-r--r-- 1 mcc users 28M Apr 14 02:20 CTLFireability.txt
-rw-r--r-- 1 mcc users 107M Apr 14 02:16 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 18 16:43 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.5K May 18 16:43 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 4.3M Apr 23 07:51 LTLCardinality.txt
-rw-r--r-- 1 mcc users 12M Apr 23 07:51 LTLCardinality.xml
-rw-r--r-- 1 mcc users 13M Apr 23 07:51 LTLFireability.txt
-rw-r--r-- 1 mcc users 39M Apr 23 07:51 LTLFireability.xml
-rw-r--r-- 1 mcc users 21M Apr 15 07:51 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 71M Apr 15 07:48 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 19M Apr 15 01:23 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 70M Apr 15 01:20 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 22K Apr 23 07:51 UpperBounds.txt
-rw-r--r-- 1 mcc users 57K Apr 23 07:51 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 May 18 16:43 equiv_col
-rw-r--r-- 1 mcc users 7 May 18 16:43 instance
-rw-r--r-- 1 mcc users 6 May 18 16:43 iscolored
-rw-r--r-- 1 mcc users 42M 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 SharedMemory-PT-000200-LTLFireability-00
FORMULA_NAME SharedMemory-PT-000200-LTLFireability-01
FORMULA_NAME SharedMemory-PT-000200-LTLFireability-02
FORMULA_NAME SharedMemory-PT-000200-LTLFireability-03
FORMULA_NAME SharedMemory-PT-000200-LTLFireability-04
FORMULA_NAME SharedMemory-PT-000200-LTLFireability-05
FORMULA_NAME SharedMemory-PT-000200-LTLFireability-06
FORMULA_NAME SharedMemory-PT-000200-LTLFireability-07
FORMULA_NAME SharedMemory-PT-000200-LTLFireability-08
FORMULA_NAME SharedMemory-PT-000200-LTLFireability-09
FORMULA_NAME SharedMemory-PT-000200-LTLFireability-10
FORMULA_NAME SharedMemory-PT-000200-LTLFireability-11
FORMULA_NAME SharedMemory-PT-000200-LTLFireability-12
FORMULA_NAME SharedMemory-PT-000200-LTLFireability-13
FORMULA_NAME SharedMemory-PT-000200-LTLFireability-14
FORMULA_NAME SharedMemory-PT-000200-LTLFireability-15

=== Now, execution of the tool begins

BK_START 1716915904112

bash -c /home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n "BK_STOP " ; date -u +%s%3N
Invoking MCC driver with
BK_TOOL=gold2023
BK_EXAMINATION=LTLFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=SharedMemory-PT-000200
Not applying reductions.
Model is PT
LTLFireability PT
Running Version 202304061127
[2024-05-28 17:05:06] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, LTLFireability, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2024-05-28 17:05:06] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2024-05-28 17:05:08] [INFO ] Load time of PNML (sax parser for PT used): 1488 ms
[2024-05-28 17:05:08] [INFO ] Transformed 40601 places.
[2024-05-28 17:05:08] [INFO ] Transformed 80200 transitions.
[2024-05-28 17:05:08] [INFO ] Found NUPN structural information;
[2024-05-28 17:05:08] [INFO ] Parsed PT model containing 40601 places and 80200 transitions and 320000 arcs in 1971 ms.
Parsed 16 properties from file /home/mcc/execution/LTLFireability.xml in 863 ms.
Working with output stream class java.io.PrintStream
Initial state reduction rules removed 3 formulas.
FORMULA SharedMemory-PT-000200-LTLFireability-03 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA SharedMemory-PT-000200-LTLFireability-10 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA SharedMemory-PT-000200-LTLFireability-11 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Support contains 40601 out of 40601 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 40601/40601 places, 80200/80200 transitions.
Applied a total of 0 rules in 1117 ms. Remains 40601 /40601 variables (removed 0) and now considering 80200/80200 (removed 0) transitions.
// Phase 1: matrix 80200 rows 40601 cols
[2024-05-28 17:06:00] [INFO ] Computed 401 invariants in 42280 ms
[2024-05-28 17:06:05] [INFO ] Implicit Places using invariants in 47697 ms returned []
Implicit Place search using SMT only with invariants took 47726 ms to find 0 implicit places.
[2024-05-28 17:06:05] [INFO ] Invariant cache hit.
[2024-05-28 17:06:10] [INFO ] Dead Transitions using invariants and state equation in 4679 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 53537 ms. Remains : 40601/40601 places, 80200/80200 transitions.
Support contains 40601 out of 40601 places after structural reductions.
[2024-05-28 17:06:16] [INFO ] Flatten gal took : 3844 ms
[2024-05-28 17:06:30] [INFO ] Flatten gal took : 3880 ms
[2024-05-28 17:06:46] [INFO ] Input system was already deterministic with 80200 transitions.
Interrupted random walk after 1094 steps, including 0 resets, run timeout after 30223 ms. (steps per millisecond=0 ) properties seen 19
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 61 ms. (steps per millisecond=163 ) properties (out of 1) seen :0
Running SMT prover for 1 properties.
[2024-05-28 17:07:19] [INFO ] Invariant cache hit.
[2024-05-28 17:07:36] [INFO ] [Real]Absence check using 401 positive place invariants in 4682 ms returned sat
[2024-05-28 17:07:44] [INFO ] After 25044ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0
Parikh walk visited 0 properties in 1 ms.
Support contains 1 out of 40601 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 40601/40601 places, 80200/80200 transitions.
Drop transitions removed 39799 transitions
Trivial Post-agglo rules discarded 39799 transitions
Performed 39799 trivial Post agglomeration. Transition count delta: 39799
Iterating post reduction 0 with 39799 rules applied. Total rules applied 39799 place count 40601 transition count 40401
Discarding 597 places :
Also discarding 596 output transitions
Drop transitions removed 596 transitions
Remove reverse transitions (loop back) rule discarded transition t74270 and 597 places that fell out of Prefix Of Interest.
Drop transitions removed 39602 transitions
Ensure Unique test removed 197 transitions
Reduce isomorphic transitions removed 39799 transitions.
Graph (trivial) has 3 edges and 6 vertex of which 2 / 6 are part of one of the 1 SCC in 2 ms
Free SCC test removed 1 places
Iterating post reduction 1 with 39801 rules applied. Total rules applied 79600 place count 5 transition count 6
Drop transitions removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 2 with 2 rules applied. Total rules applied 79602 place count 5 transition count 4
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 1 Pre rules applied. Total rules applied 79602 place count 5 transition count 3
Deduced a syphon composed of 1 places in 0 ms
Ensure Unique test removed 1 places
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 3 with 3 rules applied. Total rules applied 79605 place count 3 transition count 3
Drop transitions removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 3 with 1 rules applied. Total rules applied 79606 place count 3 transition count 2
Ensure Unique test removed 1 places
Iterating post reduction 4 with 1 rules applied. Total rules applied 79607 place count 2 transition count 2
Applied a total of 79607 rules in 2564 ms. Remains 2 /40601 variables (removed 40599) and now considering 2/80200 (removed 80198) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2564 ms. Remains : 2/40601 places, 2/80200 transitions.
Finished random walk after 1 steps, including 0 resets, run visited all 1 properties in 1 ms. (steps per millisecond=1 )
Parikh walk visited 0 properties in 0 ms.
Computed a total of 0 stabilizing places and 0 stable transitions
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202304061127/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(G(p0)))'
Support contains 39800 out of 40601 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 40601/40601 places, 80200/80200 transitions.
Applied a total of 0 rules in 502 ms. Remains 40601 /40601 variables (removed 0) and now considering 80200/80200 (removed 0) transitions.
[2024-05-28 17:07:50] [INFO ] Invariant cache hit.
[2024-05-28 17:07:55] [INFO ] Implicit Places using invariants in 4962 ms returned []
Implicit Place search using SMT only with invariants took 4965 ms to find 0 implicit places.
[2024-05-28 17:07:55] [INFO ] Invariant cache hit.
[2024-05-28 17:08:00] [INFO ] Dead Transitions using invariants and state equation in 4433 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 9911 ms. Remains : 40601/40601 places, 80200/80200 transitions.
ANTLR Tool version 4.9.3 used for code generation does not match the current runtime version 4.7.2ANTLR Runtime version 4.9.3 used for parser compilation does not match the current runtime version 4.7.2ANTLR Tool version 4.9.3 used for code generation does not match the current runtime version 4.7.2ANTLR Runtime version 4.9.3 used for parser compilation does not match the current runtime version 4.7.2Stuttering acceptance computed with spot in 243 ms :[true, (NOT p0), (NOT p0)]
Running random walk in product with property : SharedMemory-PT-000200-LTLFireability-00 automaton TGBA Formula[mat=[[{ cond=true, acceptance={0} source=0 dest: 0}], [{ cond=true, acceptance={} source=1 dest: 2}], [{ cond=(NOT p0), acceptance={} source=2 dest: 0}, { cond=p0, acceptance={} source=2 dest: 2}]], initial=1, aps=[p0:(AND (EQ s40204 0) (EQ s19745 0) (EQ s15585 0) (EQ s3446 0) (EQ s7606 0) (EQ s11425 0) (EQ s7265 0) (EQ s3105 0) (EQ s19404 0) (EQ s20086 0) (EQ s24246...], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, complete, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-sensitive, terminal, very-weak, weak, inherently-weak], stateDesc=[null, null, null][false, false, false]]
Entered a terminal (fully accepting) state of product in 6 steps with 0 reset in 31 ms.
FORMULA SharedMemory-PT-000200-LTLFireability-00 FALSE TECHNIQUES STUTTER_TEST
Treatment of property SharedMemory-PT-000200-LTLFireability-00 finished in 10469 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202304061127/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X((!p0 U p1)))'
Support contains 601 out of 40601 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 40601/40601 places, 80200/80200 transitions.
Applied a total of 0 rules in 253 ms. Remains 40601 /40601 variables (removed 0) and now considering 80200/80200 (removed 0) transitions.
[2024-05-28 17:08:01] [INFO ] Invariant cache hit.
[2024-05-28 17:08:05] [INFO ] Implicit Places using invariants in 4403 ms returned []
Implicit Place search using SMT only with invariants took 4419 ms to find 0 implicit places.
[2024-05-28 17:08:05] [INFO ] Invariant cache hit.
[2024-05-28 17:08:10] [INFO ] Dead Transitions using invariants and state equation in 4540 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 9245 ms. Remains : 40601/40601 places, 80200/80200 transitions.
Stuttering acceptance computed with spot in 108 ms :[(NOT p1), (NOT p1), true]
Running random walk in product with property : SharedMemory-PT-000200-LTLFireability-01 automaton TGBA Formula[mat=[[{ cond=(AND (NOT p1) (NOT p0)), acceptance={0} source=0 dest: 0}, { cond=(AND (NOT p1) p0), acceptance={0} source=0 dest: 2}], [{ cond=true, acceptance={} source=1 dest: 0}], [{ cond=true, acceptance={0} source=2 dest: 2}]], initial=1, aps=[p1:(OR (AND (EQ s37725 1) (EQ s38535 1)) (AND (EQ s38112 1) (EQ s38481 1)) (AND (EQ s37646 1) (EQ s38143 1)) (AND (EQ s37751 1) (EQ s38428 1)) (AND (EQ s3...], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-sensitive, very-weak, weak, inherently-weak], stateDesc=[null, null, null][false, false, false]]
Entered a terminal (fully accepting) state of product in 1 steps with 0 reset in 7 ms.
FORMULA SharedMemory-PT-000200-LTLFireability-01 FALSE TECHNIQUES STUTTER_TEST
Treatment of property SharedMemory-PT-000200-LTLFireability-01 finished in 9813 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202304061127/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F(p0))'
Support contains 200 out of 40601 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 40601/40601 places, 80200/80200 transitions.
Applied a total of 0 rules in 1247 ms. Remains 40601 /40601 variables (removed 0) and now considering 80200/80200 (removed 0) transitions.
[2024-05-28 17:08:11] [INFO ] Invariant cache hit.
[2024-05-28 17:08:16] [INFO ] Implicit Places using invariants in 4626 ms returned []
Implicit Place search using SMT only with invariants took 4627 ms to find 0 implicit places.
[2024-05-28 17:08:16] [INFO ] Invariant cache hit.
[2024-05-28 17:08:20] [INFO ] Dead Transitions using invariants and state equation in 4418 ms found 0 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 10308 ms. Remains : 40601/40601 places, 80200/80200 transitions.
Stuttering acceptance computed with spot in 58 ms :[(NOT p0)]
Running random walk in product with property : SharedMemory-PT-000200-LTLFireability-02 automaton TGBA Formula[mat=[[{ cond=(NOT p0), acceptance={0} source=0 dest: 0}]], initial=0, aps=[p0:(AND (EQ s37929 0) (EQ s38059 0) (EQ s37994 0) (EQ s37921 0) (EQ s38051 0) (EQ s37986 0) (EQ s38368 0) (EQ s37945 0) (EQ s38075 0) (EQ s38010 0) (EQ s3...], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, colored, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-invariant, very-weak, weak, inherently-weak], stateDesc=[null][true]]
Product exploration timeout after 2390 steps with 3 reset in 10144 ms.
Stack based approach found an accepted trace after 88 steps with 0 reset with depth 89 and stack size 89 in 13 ms.
FORMULA SharedMemory-PT-000200-LTLFireability-02 FALSE TECHNIQUES STACK_TEST
Treatment of property SharedMemory-PT-000200-LTLFireability-02 finished in 20655 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202304061127/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G(F(p0)))'
Support contains 401 out of 40601 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 40601/40601 places, 80200/80200 transitions.
Applied a total of 0 rules in 711 ms. Remains 40601 /40601 variables (removed 0) and now considering 80200/80200 (removed 0) transitions.
[2024-05-28 17:08:32] [INFO ] Invariant cache hit.
[2024-05-28 17:08:36] [INFO ] Implicit Places using invariants in 4643 ms returned []
Implicit Place search using SMT only with invariants took 4657 ms to find 0 implicit places.
[2024-05-28 17:08:36] [INFO ] Invariant cache hit.
[2024-05-28 17:08:41] [INFO ] Dead Transitions using invariants and state equation in 5009 ms found 0 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 10381 ms. Remains : 40601/40601 places, 80200/80200 transitions.
Stuttering acceptance computed with spot in 102 ms :[(NOT p0), (NOT p0)]
Running random walk in product with property : SharedMemory-PT-000200-LTLFireability-04 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 0}, { cond=(NOT p0), acceptance={} source=0 dest: 1}], [{ cond=(NOT p0), acceptance={0} source=1 dest: 1}]], initial=0, aps=[p0:(AND (OR (EQ s37654 0) (EQ s37872 0) (EQ s38278 0)) (OR (EQ s37738 0) (EQ s37872 0) (EQ s38204 0)) (OR (EQ s37669 0) (EQ s37872 0) (EQ s38389 0)) (OR (...], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, no-univ-branch, stutter-invariant, very-weak, weak, inherently-weak], stateDesc=[null, null][true, true]]
Product exploration timeout after 1720 steps with 15 reset in 10029 ms.
Product exploration timeout after 1250 steps with 2 reset in 10265 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]
False Knowledge obtained : [(X (NOT p0)), (X p0), (X (X (NOT p0))), (X (X p0))]
Knowledge based reduction with 1 factoid took 194 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 68 ms :[(NOT p0), (NOT p0)]
Finished random walk after 2 steps, including 0 resets, run visited all 1 properties in 65 ms. (steps per millisecond=0 )
Parikh walk visited 0 properties in 0 ms.
Knowledge obtained : [p0]
False Knowledge obtained : [(X (NOT p0)), (X p0), (X (X (NOT p0))), (X (X p0)), (F (NOT p0))]
Knowledge based reduction with 1 factoid took 196 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 78 ms :[(NOT p0), (NOT p0)]
Stuttering acceptance computed with spot in 98 ms :[(NOT p0), (NOT p0)]
Support contains 401 out of 40601 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 40601/40601 places, 80200/80200 transitions.
Applied a total of 0 rules in 675 ms. Remains 40601 /40601 variables (removed 0) and now considering 80200/80200 (removed 0) transitions.
[2024-05-28 17:09:07] [INFO ] Invariant cache hit.
[2024-05-28 17:09:12] [INFO ] Implicit Places using invariants in 5068 ms returned []
Implicit Place search using SMT only with invariants took 5070 ms to find 0 implicit places.
[2024-05-28 17:09:12] [INFO ] Invariant cache hit.
[2024-05-28 17:09:17] [INFO ] Dead Transitions using invariants and state equation in 5228 ms found 0 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 10984 ms. Remains : 40601/40601 places, 80200/80200 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]
False Knowledge obtained : [(X (NOT p0)), (X p0), (X (X (NOT p0))), (X (X p0))]
Knowledge based reduction with 1 factoid took 210 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 77 ms :[(NOT p0), (NOT p0)]
Finished random walk after 1 steps, including 0 resets, run visited all 1 properties in 25 ms. (steps per millisecond=0 )
Parikh walk visited 0 properties in 0 ms.
Knowledge obtained : [p0]
False Knowledge obtained : [(X (NOT p0)), (X p0), (X (X (NOT p0))), (X (X p0)), (F (NOT p0))]
Knowledge based reduction with 1 factoid took 199 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 81 ms :[(NOT p0), (NOT p0)]
Stuttering acceptance computed with spot in 86 ms :[(NOT p0), (NOT p0)]
Stuttering acceptance computed with spot in 84 ms :[(NOT p0), (NOT p0)]
Product exploration timeout after 1630 steps with 28 reset in 10007 ms.
Product exploration timeout after 1660 steps with 39 reset in 10416 ms.
Built C files in :
/tmp/ltsmin6922747639119650290
[2024-05-28 17:09:41] [INFO ] Too many transitions (80200) to apply POR reductions. Disabling POR matrices.
[2024-05-28 17:09:42] [INFO ] Built C files in 931ms conformant to PINS (ltsmin variant)in folder :/tmp/ltsmin6922747639119650290
Running compilation step : cd /tmp/ltsmin6922747639119650290;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202304061127/bin/limit_time.pl' '3' 'gcc' '-c' '-I/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202304061127/bin/include/' '-I.' '-std=c99' '-fPIC' '-O0' 'model.c'
WARNING : LTS min runner thread failed on error :java.lang.RuntimeException: Compilation or link of executable timed out.java.util.concurrent.TimeoutException: Subprocess running cd /tmp/ltsmin6922747639119650290;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202304061127/bin/limit_time.pl' '3' 'gcc' '-c' '-I/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202304061127/bin/include/' '-I.' '-std=c99' '-fPIC' '-O0' 'model.c' killed by timeout after 3 SECONDS
java.lang.RuntimeException: Compilation or link of executable timed out.java.util.concurrent.TimeoutException: Subprocess running cd /tmp/ltsmin6922747639119650290;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202304061127/bin/limit_time.pl' '3' 'gcc' '-c' '-I/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202304061127/bin/include/' '-I.' '-std=c99' '-fPIC' '-O0' 'model.c' killed by timeout after 3 SECONDS
at fr.lip6.move.gal.application.runner.ltsmin.LTSminRunner$1.run(LTSminRunner.java:92)
at java.base/java.lang.Thread.run(Thread.java:833)
Support contains 401 out of 40601 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 40601/40601 places, 80200/80200 transitions.
Applied a total of 0 rules in 631 ms. Remains 40601 /40601 variables (removed 0) and now considering 80200/80200 (removed 0) transitions.
[2024-05-28 17:09:46] [INFO ] Invariant cache hit.
[2024-05-28 17:09:50] [INFO ] Implicit Places using invariants in 4484 ms returned []
Implicit Place search using SMT only with invariants took 4485 ms to find 0 implicit places.
[2024-05-28 17:09:50] [INFO ] Invariant cache hit.
[2024-05-28 17:09:55] [INFO ] Dead Transitions using invariants and state equation in 4557 ms found 0 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 9693 ms. Remains : 40601/40601 places, 80200/80200 transitions.
Built C files in :
/tmp/ltsmin8597196198521300094
[2024-05-28 17:09:55] [INFO ] Too many transitions (80200) to apply POR reductions. Disabling POR matrices.
[2024-05-28 17:09:56] [INFO ] Built C files in 713ms conformant to PINS (ltsmin variant)in folder :/tmp/ltsmin8597196198521300094
Running compilation step : cd /tmp/ltsmin8597196198521300094;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202304061127/bin/limit_time.pl' '3' 'gcc' '-c' '-I/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202304061127/bin/include/' '-I.' '-std=c99' '-fPIC' '-O0' 'model.c'
WARNING : LTS min runner thread failed on error :java.lang.RuntimeException: Compilation or link of executable timed out.java.util.concurrent.TimeoutException: Subprocess running cd /tmp/ltsmin8597196198521300094;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202304061127/bin/limit_time.pl' '3' 'gcc' '-c' '-I/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202304061127/bin/include/' '-I.' '-std=c99' '-fPIC' '-O0' 'model.c' killed by timeout after 3 SECONDS
java.lang.RuntimeException: Compilation or link of executable timed out.java.util.concurrent.TimeoutException: Subprocess running cd /tmp/ltsmin8597196198521300094;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202304061127/bin/limit_time.pl' '3' 'gcc' '-c' '-I/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202304061127/bin/include/' '-I.' '-std=c99' '-fPIC' '-O0' 'model.c' killed by timeout after 3 SECONDS
at fr.lip6.move.gal.application.runner.ltsmin.LTSminRunner$1.run(LTSminRunner.java:92)
at java.base/java.lang.Thread.run(Thread.java:833)
[2024-05-28 17:10:07] [INFO ] Flatten gal took : 2843 ms
[2024-05-28 17:10:09] [INFO ] Flatten gal took : 2443 ms
[2024-05-28 17:10:10] [INFO ] Time to serialize gal into /tmp/LTL6004821123595839041.gal : 425 ms
[2024-05-28 17:10:10] [INFO ] Time to serialize properties into /tmp/LTL3243207983157581049.prop : 128 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202304061127/bin/its-ltl-linux64' '--gc-threshold' '2000000' '-i' '/tmp/LTL6004821123595839041.gal' '-t' 'CGAL' '-hoa' '/tmp/aut6798118372012731736.hoa' '-atoms' '/tmp/LTL3243207983157581049.prop' '-c' '-stutter-deadlock' '--gen-order' 'FOLLOW'

its-ltl command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202304061127/bin/its-ltl-linux64 --gc-threshold 2000000 -i /tmp/L...317
Detected timeout of ITS tools.
[2024-05-28 17:10:32] [INFO ] Flatten gal took : 2803 ms
[2024-05-28 17:10:35] [INFO ] Flatten gal took : 2598 ms
[2024-05-28 17:10:36] [INFO ] Time to serialize gal into /tmp/LTL8326864657488758928.gal : 529 ms
[2024-05-28 17:10:36] [INFO ] Time to serialize properties into /tmp/LTL4486598505429050460.ltl : 298 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202304061127/bin/its-ltl-linux64' '--gc-threshold' '2000000' '-i' '/tmp/LTL8326864657488758928.gal' '-t' 'CGAL' '-LTL' '/tmp/LTL4486598505429050460.ltl' '-c' '-stutter-deadlock' '--gen-order' 'FOLLOW'

its-ltl command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202304061127/bin/its-ltl-linux64 --gc-threshold 2000000 -i /tmp/L...275
Read 1 LTL properties
Detected timeout of ITS tools.
[2024-05-28 17:10:54] [INFO ] Flatten gal took : 2745 ms
[2024-05-28 17:10:54] [INFO ] Applying decomposition
[2024-05-28 17:10:57] [INFO ] Flatten gal took : 2570 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202304061127/bin/convert-linux64' '-i' '/tmp/graph5888189274587066714.txt' '-o' '/tmp/graph5888189274587066714.bin' '-w' '/tmp/graph5888189274587066714.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202304061127/bin/louvain-linux64' '/tmp/graph5888189274587066714.bin' '-l' '-1' '-v' '-w' '/tmp/graph5888189274587066714.weights' '-q' '0' '-e' '0.001'
[2024-05-28 17:11:05] [INFO ] Decomposing Gal with order
[2024-05-28 17:11:12] [INFO ] Rewriting arrays to variables to allow decomposition.
[2024-05-28 17:11:49] [INFO ] Removed a total of 158000 redundant transitions.
[2024-05-28 17:11:52] [INFO ] Flatten gal took : 15444 ms
[2024-05-28 17:12:09] [INFO ] Fuse similar labels procedure discarded/fused a total of 5222 labels/synchronizations in 11508 ms.
[2024-05-28 17:12:10] [INFO ] Time to serialize gal into /tmp/LTL6779250084704407151.gal : 838 ms
[2024-05-28 17:12:10] [INFO ] Time to serialize properties into /tmp/LTL14299655630134218145.ltl : 296 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202304061127/bin/its-ltl-linux64' '--gc-threshold' '2000000' '-i' '/tmp/LTL6779250084704407151.gal' '-t' 'CGAL' '-LTL' '/tmp/LTL14299655630134218145.ltl' '-c' '-stutter-deadlock'

its-ltl command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202304061127/bin/its-ltl-linux64 --gc-threshold 2000000 -i /tmp/L...255
Read 1 LTL properties
Detected timeout of ITS tools.
Built C files in :
/tmp/ltsmin15807311461241259442
[2024-05-28 17:12:26] [INFO ] Built C files in 839ms conformant to PINS (ltsmin variant)in folder :/tmp/ltsmin15807311461241259442
Running compilation step : cd /tmp/ltsmin15807311461241259442;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202304061127/bin/limit_time.pl' '3' 'gcc' '-c' '-I/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202304061127/bin/include/' '-I.' '-std=c99' '-fPIC' '-O0' 'model.c'
WARNING : LTS min runner thread failed on error :java.lang.RuntimeException: Compilation or link of executable timed out.java.util.concurrent.TimeoutException: Subprocess running cd /tmp/ltsmin15807311461241259442;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202304061127/bin/limit_time.pl' '3' 'gcc' '-c' '-I/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202304061127/bin/include/' '-I.' '-std=c99' '-fPIC' '-O0' 'model.c' killed by timeout after 3 SECONDS
java.lang.RuntimeException: Compilation or link of executable timed out.java.util.concurrent.TimeoutException: Subprocess running cd /tmp/ltsmin15807311461241259442;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202304061127/bin/limit_time.pl' '3' 'gcc' '-c' '-I/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202304061127/bin/include/' '-I.' '-std=c99' '-fPIC' '-O0' 'model.c' killed by timeout after 3 SECONDS
at fr.lip6.move.gal.application.runner.ltsmin.LTSminRunner$1.run(LTSminRunner.java:92)
at java.base/java.lang.Thread.run(Thread.java:833)
Treatment of property SharedMemory-PT-000200-LTLFireability-04 finished in 238396 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202304061127/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F(G((p0 U (!p0&&X(p1))))))'
Support contains 40000 out of 40601 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 40601/40601 places, 80200/80200 transitions.
Applied a total of 0 rules in 231 ms. Remains 40601 /40601 variables (removed 0) and now considering 80200/80200 (removed 0) transitions.
[2024-05-28 17:12:29] [INFO ] Invariant cache hit.
[2024-05-28 17:12:34] [INFO ] Implicit Places using invariants in 4527 ms returned []
Implicit Place search using SMT only with invariants took 4528 ms to find 0 implicit places.
[2024-05-28 17:12:34] [INFO ] Invariant cache hit.
[2024-05-28 17:12:39] [INFO ] Dead Transitions using invariants and state equation in 4617 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 9386 ms. Remains : 40601/40601 places, 80200/80200 transitions.
Stuttering acceptance computed with spot in 122 ms :[(OR (NOT p1) p0), (NOT p1), (OR (NOT p1) p0)]
Running random walk in product with property : SharedMemory-PT-000200-LTLFireability-05 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 0}, { cond=(NOT p0), acceptance={0} source=0 dest: 1}, { cond=p0, acceptance={0} source=0 dest: 2}], [{ cond=(NOT p1), acceptance={} source=1 dest: 0}, { cond=(AND (NOT p0) (NOT p1)), acceptance={0} source=1 dest: 1}, { cond=(AND p0 (NOT p1)), acceptance={0} source=1 dest: 2}], [{ cond=(NOT p0), acceptance={0} source=2 dest: 1}, { cond=p0, acceptance={0} source=2 dest: 2}]], initial=0, aps=[p0:(OR (EQ s37929 1) (EQ s38059 1) (EQ s37994 1) (EQ s37921 1) (EQ s38051 1) (EQ s37986 1) (EQ s38368 1) (EQ s37945 1) (EQ s38075 1) (EQ s38010 1) (EQ s38...], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, no-univ-branch, stutter-sensitive], stateDesc=[null, null, null][false, false, false]]
Product exploration timeout after 1770 steps with 2 reset in 10126 ms.
Stack based approach found an accepted trace after 347 steps with 0 reset with depth 348 and stack size 348 in 97 ms.
FORMULA SharedMemory-PT-000200-LTLFireability-05 FALSE TECHNIQUES STACK_TEST
Treatment of property SharedMemory-PT-000200-LTLFireability-05 finished in 19928 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202304061127/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F(p0))'
Support contains 40400 out of 40601 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 40601/40601 places, 80200/80200 transitions.
Applied a total of 0 rules in 630 ms. Remains 40601 /40601 variables (removed 0) and now considering 80200/80200 (removed 0) transitions.
[2024-05-28 17:12:50] [INFO ] Invariant cache hit.
[2024-05-28 17:12:54] [INFO ] Implicit Places using invariants in 4727 ms returned []
Implicit Place search using SMT only with invariants took 4751 ms to find 0 implicit places.
[2024-05-28 17:12:55] [INFO ] Invariant cache hit.
[2024-05-28 17:12:59] [INFO ] Dead Transitions using invariants and state equation in 4393 ms found 0 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 9798 ms. Remains : 40601/40601 places, 80200/80200 transitions.
Stuttering acceptance computed with spot in 37 ms :[(NOT p0)]
Running random walk in product with property : SharedMemory-PT-000200-LTLFireability-06 automaton TGBA Formula[mat=[[{ cond=(NOT p0), acceptance={0} source=0 dest: 0}]], initial=0, aps=[p0:(OR (EQ s40204 1) (EQ s19745 1) (EQ s15585 1) (EQ s3446 1) (EQ s7606 1) (EQ s11425 1) (EQ s7265 1) (EQ s3105 1) (EQ s19404 1) (EQ s20086 1) (EQ s24246 ...], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, colored, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-invariant, very-weak, weak, inherently-weak], stateDesc=[null][true]]
Product exploration timeout after 7130 steps with 2625 reset in 10063 ms.
Product exploration timeout after 7120 steps with 2624 reset in 10063 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 : [(NOT p0)]
False Knowledge obtained : [(X (NOT p0)), (X p0), (X (X (NOT p0))), (X (X p0))]
Knowledge based reduction with 1 factoid took 157 ms. Reduced automaton from 1 states, 1 edges and 1 AP (stutter insensitive) to 1 states, 1 edges and 1 AP (stutter insensitive).
Stuttering acceptance computed with spot in 28 ms :[(NOT p0)]
Finished random walk after 1 steps, including 0 resets, run visited all 1 properties in 9 ms. (steps per millisecond=0 )
Parikh walk visited 0 properties in 0 ms.
Knowledge obtained : [(NOT p0)]
False Knowledge obtained : [(X (NOT p0)), (X p0), (X (X (NOT p0))), (X (X p0)), (F p0)]
Knowledge based reduction with 1 factoid took 168 ms. Reduced automaton from 1 states, 1 edges and 1 AP (stutter insensitive) to 1 states, 1 edges and 1 AP (stutter insensitive).
Stuttering acceptance computed with spot in 31 ms :[(NOT p0)]
Stuttering acceptance computed with spot in 47 ms :[(NOT p0)]

BK_STOP 1716916466726

--------------------
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
+ [[ LTLFireability = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution LTLFireability -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
+ 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//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202304061127.jar
+ VERSION=202304061127
+ echo 'Running Version 202304061127'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination LTLFireability -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="SharedMemory-PT-000200"
export BK_EXAMINATION="LTLFireability"
export BK_TOOL="gold2023"
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 gold2023"
echo " Input is SharedMemory-PT-000200, 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 r351-tall-171679102600533"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/SharedMemory-PT-000200.tgz
mv SharedMemory-PT-000200 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 ;