Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2024-input.r418-tall-171690557700433.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)
..........................................................................................................................................................
=====================================================================
Generated by BenchKit 2-5568
Executing tool gold2023
Input is Sudoku-PT-AN16, examination is StableMarking
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r418-tall-171690557700433
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 119M
-rw-r--r-- 1 mcc users 1.6M Apr 12 12:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 6.8M Apr 12 12:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 3.9M Apr 12 10:25 CTLFireability.txt
-rw-r--r-- 1 mcc users 18M Apr 12 10:25 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 18 16:43 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 698K Apr 23 08:01 LTLCardinality.txt
-rw-r--r-- 1 mcc users 2.1M Apr 23 08:01 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.1M Apr 23 08:01 LTLFireability.txt
-rw-r--r-- 1 mcc users 7.2M Apr 23 08:01 LTLFireability.xml
-rw-r--r-- 1 mcc users 4.7M Apr 12 14:52 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 22M Apr 12 14:52 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 8.7M Apr 12 12:38 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 40M Apr 12 12:38 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 144K Apr 23 08:01 UpperBounds.txt
-rw-r--r-- 1 mcc users 345K Apr 23 08:01 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 May 18 16:43 equiv_col
-rw-r--r-- 1 mcc users 5 May 18 16:43 instance
-rw-r--r-- 1 mcc users 6 May 18 16:43 iscolored
-rw-r--r-- 1 mcc users 2.3M 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

FORMULA_NAME StableMarking

=== Now, execution of the tool begins

BK_START 1717135007800

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=StableMarking
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=Sudoku-PT-AN16
Not applying reductions.
Model is PT
StableMarking PT
Running Version 202304061127
[2024-05-31 05:56:49] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, StableMarking, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 1800]
[2024-05-31 05:56:49] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2024-05-31 05:56:49] [INFO ] Load time of PNML (sax parser for PT used): 221 ms
[2024-05-31 05:56:49] [INFO ] Transformed 4864 places.
[2024-05-31 05:56:49] [INFO ] Transformed 4096 transitions.
[2024-05-31 05:56:49] [INFO ] Found NUPN structural information;
[2024-05-31 05:56:49] [INFO ] Parsed PT model containing 4864 places and 4096 transitions and 16384 arcs in 328 ms.
[2024-05-31 05:56:50] [INFO ] Flatten gal took : 468 ms
[2024-05-31 05:56:51] [INFO ] Flatten gal took : 228 ms
[2024-05-31 05:56:51] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality7208524630732616352.gal : 110 ms
[2024-05-31 05:56:51] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality2351355953215212217.prop : 26 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-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality7208524630732616352.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality2351355953215212217.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202304061127/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...328
Loading property file /tmp/ReachabilityCardinality2351355953215212217.prop.
Incomplete random walk after 10000 steps, including 44 resets, run finished after 4522 ms. (steps per millisecond=2 ) properties (out of 4864) seen :4489
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 6 ms. (steps per millisecond=16 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 7 ms. (steps per millisecond=14 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 6 ms. (steps per millisecond=16 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 6 ms. (steps per millisecond=16 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 7 ms. (steps per millisecond=14 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 5 ms. (steps per millisecond=20 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 3 ms. (steps per millisecond=33 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 3 ms. (steps per millisecond=33 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 3 ms. (steps per millisecond=33 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 3 ms. (steps per millisecond=33 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 3 ms. (steps per millisecond=33 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Incomplete Best-First random walk after 101 steps, including 0 resets, run finished after 4 ms. (steps per millisecond=25 ) properties (out of 375) seen :0
Running SMT prover for 375 properties.
// Phase 1: matrix 4096 rows 4864 cols
[2024-05-31 05:56:54] [INFO ] Computed 768 invariants in 80 ms
Invariant property smplace_4613 does not hold.
Invariant property smplace_4612 does not hold.
Invariant property smplace_4611 does not hold.
Invariant property smplace_4610 does not hold.
Invariant property smplace_4609 does not hold.
Invariant property smplace_4608 does not hold.
Invariant property smplace_4544 does not hold.
Invariant property smplace_4528 does not hold.
Invariant property smplace_4512 does not hold.
Invariant property smplace_4352 does not hold.
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:2343)
at fr.lip6.move.gal.structural.smt.DeadlockTester.verifyPossible(DeadlockTester.java:621)
at fr.lip6.move.gal.structural.smt.DeadlockTester.testUnreachableWithSMTIncremental(DeadlockTester.java:342)
at fr.lip6.move.gal.structural.smt.DeadlockTester.testUnreachableWithSMT(DeadlockTester.java:226)
at fr.lip6.move.gal.application.solver.ReachabilitySolver.applyReductions(ReachabilitySolver.java:96)
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:426)
at fr.lip6.move.gal.application.Application.start(Application.java:182)
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)
[2024-05-31 05:57:20] [WARNING] SMT solver failed with error :SMT solver raised an error when submitting script.... while checking expressions.
[2024-05-31 05:57:20] [INFO ] After 25064ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0
Fused 375 Parikh solutions to 1 different solutions.
Parikh walk visited 0 properties in 1 ms.
Support contains 375 out of 4864 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 4864/4864 places, 4096/4096 transitions.
Graph (complete) has 12288 edges and 4864 vertex of which 1016 are kept as prefixes of interest. Removing 3848 places using SCC suffix rule.21 ms
Discarding 3848 places :
Also discarding 18 output transitions
Drop transitions removed 18 transitions
Drop transitions removed 3703 transitions
Reduce isomorphic transitions removed 3703 transitions.
Iterating post reduction 0 with 3703 rules applied. Total rules applied 3704 place count 1016 transition count 375
Ensure Unique test removed 56 places
Iterating post reduction 1 with 56 rules applied. Total rules applied 3760 place count 960 transition count 375
Applied a total of 3760 rules in 119 ms. Remains 960 /4864 variables (removed 3904) and now considering 375/4096 (removed 3721) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 119 ms. Remains : 960/4864 places, 375/4096 transitions.
Finished random walk after 4402 steps, including 31 resets, run visited all 375 properties in 293 ms. (steps per millisecond=15 )
Parikh walk visited 0 properties in 0 ms.
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 StableMarking after proving 4864 properties.
FORMULA StableMarking FALSE TECHNIQUES RANDOM_WALK TOPOLOGICAL
Total runtime 31102 ms.

BK_STOP 1717135041946

--------------------
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
+ [[ StableMarking = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution StableMarking -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_1.0.0.202304061127.jar
+ VERSION=202304061127
+ echo 'Running Version 202304061127'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination StableMarking -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="Sudoku-PT-AN16"
export BK_EXAMINATION="StableMarking"
export BK_TOOL="gold2023"
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 2-5568"
echo " Executing tool gold2023"
echo " Input is Sudoku-PT-AN16, examination is StableMarking"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r418-tall-171690557700433"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/Sudoku-PT-AN16.tgz
mv Sudoku-PT-AN16 execution
cd execution
if [ "StableMarking" = "ReachabilityDeadlock" ] || [ "StableMarking" = "UpperBounds" ] || [ "StableMarking" = "QuasiLiveness" ] || [ "StableMarking" = "StableMarking" ] || [ "StableMarking" = "Liveness" ] || [ "StableMarking" = "OneSafe" ] || [ "StableMarking" = "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 [ "StableMarking" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "StableMarking" != "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 "StableMarking.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property StableMarking.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "StableMarking.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 '' StableMarking.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "StableMarking" = "ReachabilityDeadlock" ] || [ "StableMarking" = "QuasiLiveness" ] || [ "StableMarking" = "StableMarking" ] || [ "StableMarking" = "Liveness" ] || [ "StableMarking" = "OneSafe" ] ; then
echo "FORMULA_NAME StableMarking"
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 ;