About the Execution of ITS-Tools for DLCshifumi-PT-5b
Execution Summary | |||||
Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
11407.628 | 154397.00 | 349849.00 | 631.20 | T | normal |
Execution Chart
We display below the execution chart for this examination (boot time has been removed).
Trace from the execution
Formatting '/data/fkordon/mcc2023-input.r115-tall-167814493900532.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2023-input.qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
.............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
=====================================================================
Generated by BenchKit 2-5348
Executing tool itstools
Input is DLCshifumi-PT-5b, examination is QuasiLiveness
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r115-tall-167814493900532
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 11M
-rw-r--r-- 1 mcc users 5.5K Feb 26 08:06 CTLCardinality.txt
-rw-r--r-- 1 mcc users 52K Feb 26 08:06 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.4K Feb 26 08:06 CTLFireability.txt
-rw-r--r-- 1 mcc users 47K Feb 26 08:06 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:40 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 3.8K Feb 25 15:54 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K Feb 25 15:54 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.2K Feb 25 15:54 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K Feb 25 15:54 LTLFireability.xml
-rw-r--r-- 1 mcc users 11K Feb 26 08:08 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 107K Feb 26 08:08 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 6.8K Feb 26 08:07 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 52K Feb 26 08:07 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Feb 25 15:54 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Feb 25 15:54 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 equiv_col
-rw-r--r-- 1 mcc users 3 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 9.7M Mar 5 18:22 model.pnml
--------------------
content from stdout:
=== Data for post analysis generated by BenchKit (invocation template)
The expected result is a vector of booleans
BOOL_VECTOR
FORMULA_NAME QuasiLiveness
=== Now, execution of the tool begins
BK_START 1678351249708
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=itstools
BK_EXAMINATION=QuasiLiveness
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=DLCshifumi-PT-5b
Not applying reductions.
Model is PT
QuasiLiveness PT
Running Version 202303021504
[2023-03-09 08:40:51] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, QuasiLiveness, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 1800]
[2023-03-09 08:40:51] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-09 08:40:52] [INFO ] Load time of PNML (sax parser for PT used): 651 ms
[2023-03-09 08:40:52] [INFO ] Transformed 27146 places.
[2023-03-09 08:40:52] [INFO ] Transformed 39849 transitions.
[2023-03-09 08:40:52] [INFO ] Found NUPN structural information;
[2023-03-09 08:40:53] [INFO ] Parsed PT model containing 27146 places and 39849 transitions and 107425 arcs in 1868 ms.
Starting structural reductions in LIVENESS mode, iteration 0 : 27146/27146 places, 39849/39849 transitions.
Graph (trivial) has 25297 edges and 27146 vertex of which 2248 / 27146 are part of one of the 143 SCC in 64 ms
Free SCC test removed 2105 places
Ensure Unique test removed 2238 transitions
Reduce isomorphic transitions removed 2238 transitions.
Drop transitions removed 12914 transitions
Trivial Post-agglo rules discarded 12914 transitions
Performed 12914 trivial Post agglomeration. Transition count delta: 12914
Iterating post reduction 0 with 12914 rules applied. Total rules applied 12915 place count 25041 transition count 24697
Reduce places removed 12914 places and 0 transitions.
Ensure Unique test removed 384 transitions
Reduce isomorphic transitions removed 384 transitions.
Drop transitions removed 379 transitions
Trivial Post-agglo rules discarded 379 transitions
Performed 379 trivial Post agglomeration. Transition count delta: 379
Iterating post reduction 1 with 13677 rules applied. Total rules applied 26592 place count 12127 transition count 23934
Reduce places removed 379 places and 0 transitions.
Ensure Unique test removed 123 transitions
Reduce isomorphic transitions removed 123 transitions.
Drop transitions removed 123 transitions
Trivial Post-agglo rules discarded 123 transitions
Performed 123 trivial Post agglomeration. Transition count delta: 123
Iterating post reduction 2 with 625 rules applied. Total rules applied 27217 place count 11748 transition count 23688
Reduce places removed 123 places and 0 transitions.
Iterating post reduction 3 with 123 rules applied. Total rules applied 27340 place count 11625 transition count 23688
Performed 123 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 4 with 123 Pre rules applied. Total rules applied 27340 place count 11625 transition count 23565
Deduced a syphon composed of 123 places in 924 ms
Reduce places removed 123 places and 0 transitions.
Iterating global reduction 4 with 246 rules applied. Total rules applied 27586 place count 11502 transition count 23565
Performed 6318 Post agglomeration using F-continuation condition.Transition count delta: 6318
Deduced a syphon composed of 6318 places in 9 ms
Reduce places removed 6318 places and 0 transitions.
Iterating global reduction 4 with 12636 rules applied. Total rules applied 40222 place count 5184 transition count 17247
Renaming transitions due to excessive name length > 1024 char.
Performed 101 Post agglomeration using F-continuation condition with reduction of 165 identical transitions.
Deduced a syphon composed of 101 places in 10 ms
Reduce places removed 101 places and 0 transitions.
Iterating global reduction 4 with 202 rules applied. Total rules applied 40424 place count 5083 transition count 17717
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 4 with 1 rules applied. Total rules applied 40425 place count 5083 transition count 17716
Performed 101 Post agglomeration using F-continuation condition with reduction of 165 identical transitions.
Deduced a syphon composed of 101 places in 8 ms
Reduce places removed 101 places and 0 transitions.
Iterating global reduction 5 with 202 rules applied. Total rules applied 40627 place count 4982 transition count 18189
Performed 101 Post agglomeration using F-continuation condition with reduction of 170 identical transitions.
Deduced a syphon composed of 101 places in 10 ms
Reduce places removed 101 places and 0 transitions.
Iterating global reduction 5 with 202 rules applied. Total rules applied 40829 place count 4881 transition count 18661
Performed 69 Post agglomeration using F-continuation condition with reduction of 110 identical transitions.
Deduced a syphon composed of 69 places in 6 ms
Reduce places removed 69 places and 0 transitions.
Iterating global reduction 5 with 138 rules applied. Total rules applied 40967 place count 4812 transition count 18997
Applied a total of 40967 rules in 5058 ms. Remains 4812 /27146 variables (removed 22334) and now considering 18997/39849 (removed 20852) transitions.
[2023-03-09 08:40:58] [INFO ] Flow matrix only has 18227 transitions (discarded 770 similar events)
// Phase 1: matrix 18227 rows 4812 cols
[2023-03-09 08:40:58] [INFO ] Computed 1378 place invariants in 86 ms
[2023-03-09 08:40:59] [INFO ] Implicit Places using invariants in 1068 ms returned []
Implicit Place search using SMT only with invariants took 1096 ms to find 0 implicit places.
[2023-03-09 08:40:59] [INFO ] Flow matrix only has 18227 transitions (discarded 770 similar events)
[2023-03-09 08:40:59] [INFO ] Invariant cache hit.
[2023-03-09 08:41:00] [INFO ] Dead Transitions using invariants and state equation in 702 ms found 0 transitions.
Starting structural reductions in LIVENESS mode, iteration 1 : 4812/27146 places, 18997/39849 transitions.
Finished structural reductions in LIVENESS mode , in 1 iterations and 6865 ms. Remains : 4812/27146 places, 18997/39849 transitions.
Discarding 4559 transitions out of 18997. Remains 14438
Initial state reduction rules removed 1 formulas.
Incomplete random walk after 10000 steps, including 2 resets, run finished after 2050 ms. (steps per millisecond=4 ) properties (out of 14437) seen :5653
Running SMT prover for 8784 properties.
[2023-03-09 08:41:02] [INFO ] Flow matrix only has 18227 transitions (discarded 770 similar events)
[2023-03-09 08:41:02] [INFO ] Invariant cache hit.
[2023-03-09 08:41:03] [INFO ] Flatten gal took : 2432 ms
[2023-03-09 08:41:05] [INFO ] Flatten gal took : 1965 ms
[2023-03-09 08:41:05] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality4811994981992042165.gal : 200 ms
[2023-03-09 08:41:05] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality4208775525279953469.prop : 29 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202303021504/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality4811994981992042165.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality4208775525279953469.prop' '--nowitness' '--gen-order' 'FOLLOW'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202303021504/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...328
Loading property file /tmp/ReachabilityCardinality4208775525279953469.prop.
java.lang.RuntimeException: SMT solver raised an error when submitting script. Raised (error "Failed to assert expression: java.io.IOException: Stream close...
at fr.lip6.move.gal.structural.smt.SMTUtils.execAndCheckResult(SMTUtils.java:251)
at fr.lip6.move.gal.structural.smt.DeadlockTester.assertInvariants(DeadlockTester.java:2340)
at fr.lip6.move.gal.structural.smt.DeadlockTester.verifyPossible(DeadlockTester.java:618)
at fr.lip6.move.gal.structural.smt.DeadlockTester.testUnreachableWithSMTIncremental(DeadlockTester.java:339)
at fr.lip6.move.gal.structural.smt.DeadlockTester.testUnreachableWithSMT(DeadlockTester.java:223)
at fr.lip6.move.gal.application.solver.ReachabilitySolver.applyReductions(ReachabilitySolver.java:95)
at fr.lip6.move.gal.application.solver.global.GlobalPropertySolver.applyReachabilitySolver(GlobalPropertySolver.java:724)
at fr.lip6.move.gal.application.solver.global.GlobalPropertySolver.solveProperty(GlobalPropertySolver.java:558)
at fr.lip6.move.gal.application.solver.global.GlobalPropertySolver.preSolveLiveness(GlobalPropertySolver.java:412)
at fr.lip6.move.gal.application.solver.global.GlobalPropertySolver.preStableMarking(GlobalPropertySolver.java:321)
at fr.lip6.move.gal.application.solver.global.GlobalPropertySolver.solveProperty(GlobalPropertySolver.java:294)
at fr.lip6.move.gal.application.Application.startNoEx(Application.java:386)
at fr.lip6.move.gal.application.Application.start(Application.java:178)
at fr.lip6.move.gal.itscl.application.Application.start(Application.java:45)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:136)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:402)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:659)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:596)
at org.eclipse.equinox.launcher.Main.run(Main.java:1467)
at org.eclipse.equinox.launcher.Main.main(Main.java:1440)
[2023-03-09 08:42:00] [WARNING] SMT solver failed with error :SMT solver raised an error when submitting script.... while checking expressions.
[2023-03-09 08:42:00] [INFO ] After 25042ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0
Fused 8784 Parikh solutions to 1 different solutions.
Parikh walk visited 0 properties in 2 ms.
Support contains 3289 out of 4812 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 4812/4812 places, 18997/18997 transitions.
Drop transitions removed 152 transitions
Reduce isomorphic transitions removed 152 transitions.
Iterating post reduction 0 with 152 rules applied. Total rules applied 152 place count 4812 transition count 18845
Discarding 7 places :
Symmetric choice reduction at 1 with 7 rule applications. Total rules 159 place count 4805 transition count 18810
Iterating global reduction 1 with 7 rules applied. Total rules applied 166 place count 4805 transition count 18810
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 1 with 7 rules applied. Total rules applied 173 place count 4805 transition count 18803
Drop transitions removed 13 transitions
Redundant transition composition rules discarded 13 transitions
Iterating global reduction 2 with 13 rules applied. Total rules applied 186 place count 4805 transition count 18790
Free-agglomeration rule applied 182 times with reduction of 16 identical transitions.
Iterating global reduction 2 with 182 rules applied. Total rules applied 368 place count 4805 transition count 18592
Reduce places removed 182 places and 0 transitions.
Drop transitions removed 174 transitions
Ensure Unique test removed 49 transitions
Reduce isomorphic transitions removed 223 transitions.
Iterating post reduction 2 with 405 rules applied. Total rules applied 773 place count 4623 transition count 18369
Applied a total of 773 rules in 2206 ms. Remains 4623 /4812 variables (removed 189) and now considering 18369/18997 (removed 628) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2210 ms. Remains : 4623/4812 places, 18369/18997 transitions.
Interrupted random walk after 124724 steps, including 0 resets, run timeout after 30001 ms. (steps per millisecond=4 ) properties seen 8772
Interrupted Best-First random walk after 279623 steps, including 0 resets, run timeout after 5015 ms. (steps per millisecond=55 ) properties seen 1
Interrupted Best-First random walk after 264817 steps, including 0 resets, run timeout after 5015 ms. (steps per millisecond=52 ) properties seen 1
Interrupted Best-First random walk after 274602 steps, including 0 resets, run timeout after 5005 ms. (steps per millisecond=54 ) properties seen 1
Interrupted Best-First random walk after 277486 steps, including 0 resets, run timeout after 5005 ms. (steps per millisecond=55 ) properties seen 1
Interrupted Best-First random walk after 276837 steps, including 0 resets, run timeout after 5002 ms. (steps per millisecond=55 ) properties seen 2
Interrupted Best-First random walk after 278425 steps, including 0 resets, run timeout after 5008 ms. (steps per millisecond=55 ) properties seen 1
Interrupted Best-First random walk after 276396 steps, including 0 resets, run timeout after 5002 ms. (steps per millisecond=55 ) properties seen 1
Interrupted Best-First random walk after 277897 steps, including 0 resets, run timeout after 5005 ms. (steps per millisecond=55 ) properties seen 1
Interrupted Best-First random walk after 276663 steps, including 0 resets, run timeout after 5017 ms. (steps per millisecond=55 ) properties seen 1
Interrupted Best-First random walk after 277056 steps, including 0 resets, run timeout after 5014 ms. (steps per millisecond=55 ) properties seen 1
Finished Best-First random walk after 5938 steps, including 0 resets, run visited all 1 properties in 112 ms. (steps per millisecond=53 )
ITS runner failed with exception null
java.lang.InterruptedException
at java.base/java.lang.Object.wait(Native Method)
at java.base/java.lang.Thread.join(Thread.java:1304)
at java.base/java.lang.Thread.join(Thread.java:1372)
at fr.lip6.move.gal.application.runner.AbstractRunner.join(AbstractRunner.java:27)
at fr.lip6.move.gal.application.runner.its.ITSRunner.join(ITSRunner.java:177)
at fr.lip6.move.gal.application.solver.global.GlobalPropertySolver.verifyWithSDD(GlobalPropertySolver.java:675)
at fr.lip6.move.gal.application.solver.ReachabilitySolver.lambda$2(ReachabilitySolver.java:63)
at java.base/java.lang.Thread.run(Thread.java:833)
Able to resolve query QuasiLiveness after proving 14438 properties.
FORMULA QuasiLiveness TRUE TECHNIQUES RANDOM_WALK BESTFIRST_WALK TOPOLOGICAL INITIAL_STATE
Total runtime 151310 ms.
BK_STOP 1678351404105
--------------------
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
+ [[ QuasiLiveness = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution QuasiLiveness -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800
+ 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_1.0.0.202303021504.jar
+ VERSION=202303021504
+ echo 'Running Version 202303021504'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination QuasiLiveness -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800
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="DLCshifumi-PT-5b"
export BK_EXAMINATION="QuasiLiveness"
export BK_TOOL="itstools"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="1800"
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 2-5348"
echo " Executing tool itstools"
echo " Input is DLCshifumi-PT-5b, examination is QuasiLiveness"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r115-tall-167814493900532"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/DLCshifumi-PT-5b.tgz
mv DLCshifumi-PT-5b execution
cd execution
if [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "UpperBounds" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] || [ "QuasiLiveness" = "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 [ "QuasiLiveness" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "QuasiLiveness" != "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 "QuasiLiveness.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property QuasiLiveness.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "QuasiLiveness.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 [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] ; then
echo "FORMULA_NAME QuasiLiveness"
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 ;