fond
Model Checking Contest 2023
13th edition, Paris, France, April 26, 2023 (at TOOLympics II)
Execution of r105-tall-167814482001054
Last Updated
May 14, 2023

About the Execution of LTSMin+red for DatabaseWithMutex-COL-40

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
15615.888 101535.00 154649.00 669.60 FFTFFFTTFFTFFTTF 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.r105-tall-167814482001054.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 ltsminxred
Input is DatabaseWithMutex-COL-40, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r105-tall-167814482001054
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 504K
-rw-r--r-- 1 mcc users 9.3K Feb 25 17:19 CTLCardinality.txt
-rw-r--r-- 1 mcc users 91K Feb 25 17:19 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.6K Feb 25 15:59 CTLFireability.txt
-rw-r--r-- 1 mcc users 56K Feb 25 15:59 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:40 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.7K Jan 29 11:40 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 4.5K Feb 25 15:56 LTLCardinality.txt
-rw-r--r-- 1 mcc users 29K Feb 25 15:56 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.6K Feb 25 15:56 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Feb 25 15:56 LTLFireability.xml
-rw-r--r-- 1 mcc users 11K Feb 25 19:55 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 94K Feb 25 19:55 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 7.7K Feb 25 18:38 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 57K Feb 25 18:38 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Feb 25 15:56 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Feb 25 15:56 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 5 18:22 equiv_pt
-rw-r--r-- 1 mcc users 3 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 5 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 59K 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

here is the order used to build the result vector(from text file)
FORMULA_NAME DatabaseWithMutex-COL-40-ReachabilityCardinality-00
FORMULA_NAME DatabaseWithMutex-COL-40-ReachabilityCardinality-01
FORMULA_NAME DatabaseWithMutex-COL-40-ReachabilityCardinality-02
FORMULA_NAME DatabaseWithMutex-COL-40-ReachabilityCardinality-03
FORMULA_NAME DatabaseWithMutex-COL-40-ReachabilityCardinality-04
FORMULA_NAME DatabaseWithMutex-COL-40-ReachabilityCardinality-05
FORMULA_NAME DatabaseWithMutex-COL-40-ReachabilityCardinality-06
FORMULA_NAME DatabaseWithMutex-COL-40-ReachabilityCardinality-07
FORMULA_NAME DatabaseWithMutex-COL-40-ReachabilityCardinality-08
FORMULA_NAME DatabaseWithMutex-COL-40-ReachabilityCardinality-09
FORMULA_NAME DatabaseWithMutex-COL-40-ReachabilityCardinality-10
FORMULA_NAME DatabaseWithMutex-COL-40-ReachabilityCardinality-11
FORMULA_NAME DatabaseWithMutex-COL-40-ReachabilityCardinality-12
FORMULA_NAME DatabaseWithMutex-COL-40-ReachabilityCardinality-13
FORMULA_NAME DatabaseWithMutex-COL-40-ReachabilityCardinality-14
FORMULA_NAME DatabaseWithMutex-COL-40-ReachabilityCardinality-15

=== Now, execution of the tool begins

BK_START 1678418852529

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=ltsminxred
BK_EXAMINATION=ReachabilityCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=DatabaseWithMutex-COL-40
Applying reductions before tool ltsmin
Invoking reducer
Running Version 202303021504
[2023-03-10 03:27:34] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityCardinality, -timeout, 360, -rebuildPNML]
[2023-03-10 03:27:34] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-10 03:27:34] [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.
[2023-03-10 03:27:34] [WARNING] Using fallBack plugin, rng conformance not checked
[2023-03-10 03:27:34] [INFO ] Load time of PNML (colored model parsed with PNMLFW) : 461 ms
[2023-03-10 03:27:34] [INFO ] Imported 11 HL places and 8 HL transitions for a total of 12920 PT places and 12800.0 transition bindings in 16 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityCardinality.xml in 20 ms.
Working with output stream class java.io.PrintStream
FORMULA DatabaseWithMutex-COL-40-ReachabilityCardinality-10 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2023-03-10 03:27:34] [INFO ] Built PT skeleton of HLPN with 11 places and 8 transitions 22 arcs in 4 ms.
[2023-03-10 03:27:34] [INFO ] Skeletonized 15 HLPN properties in 1 ms.
Remains 15 properties that can be checked using skeleton over-approximation.
Computed a total of 0 stabilizing places and 0 stable transitions
[2023-03-10 03:27:34] [INFO ] Flatten gal took : 13 ms
[2023-03-10 03:27:34] [INFO ] Flatten gal took : 2 ms
Transition Release forces synchronizations/join behavior on parameter s of sort site
Transition Acquire forces synchronizations/join behavior on parameter f of sort file
[2023-03-10 03:27:35] [INFO ] Unfolded HLPN to a Petri net with 12920 places and 12800 transitions 156800 arcs in 210 ms.
[2023-03-10 03:27:35] [INFO ] Unfolded 15 HLPN properties in 12 ms.
Incomplete random walk after 10000 steps, including 2 resets, run finished after 4569 ms. (steps per millisecond=2 ) properties (out of 15) seen :6
FORMULA DatabaseWithMutex-COL-40-ReachabilityCardinality-12 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DatabaseWithMutex-COL-40-ReachabilityCardinality-09 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DatabaseWithMutex-COL-40-ReachabilityCardinality-03 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DatabaseWithMutex-COL-40-ReachabilityCardinality-02 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DatabaseWithMutex-COL-40-ReachabilityCardinality-01 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DatabaseWithMutex-COL-40-ReachabilityCardinality-00 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Interrupted Best-First random walk after 8852 steps, including 2 resets, run timeout after 5136 ms. (steps per millisecond=1 ) properties seen 0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 588 ms. (steps per millisecond=17 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 2677 ms. (steps per millisecond=3 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 43 ms. (steps per millisecond=232 ) properties (out of 9) seen :0
Interrupted Best-First random walk after 7289 steps, including 1 resets, run timeout after 5643 ms. (steps per millisecond=1 ) properties seen 0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 587 ms. (steps per millisecond=17 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 5112 ms. (steps per millisecond=1 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 311 ms. (steps per millisecond=32 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 2780 ms. (steps per millisecond=3 ) properties (out of 9) seen :0
Running SMT prover for 9 properties.
// Phase 1: matrix 12800 rows 12920 cols
[2023-03-10 03:28:03] [INFO ] Computed 1720 place invariants in 783 ms
[2023-03-10 03:28:24] [INFO ] [Real]Absence check using 119 positive place invariants in 240 ms returned sat
[2023-03-10 03:28:26] [INFO ] [Real]Absence check using 119 positive and 1601 generalized place invariants in 1881 ms returned sat
[2023-03-10 03:28:26] [INFO ] After 5870ms SMT Verify possible using all constraints in real domain returned unsat :3 sat :0 real:6
[2023-03-10 03:28:29] [INFO ] [Nat]Absence check using 119 positive place invariants in 214 ms returned sat
[2023-03-10 03:28:31] [INFO ] [Nat]Absence check using 119 positive and 1601 generalized place invariants in 1845 ms returned sat
[2023-03-10 03:28:50] [INFO ] After 24045ms SMT Verify possible using all constraints in natural domain returned unsat :7 sat :0
FORMULA DatabaseWithMutex-COL-40-ReachabilityCardinality-15 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DatabaseWithMutex-COL-40-ReachabilityCardinality-14 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DatabaseWithMutex-COL-40-ReachabilityCardinality-11 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DatabaseWithMutex-COL-40-ReachabilityCardinality-07 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DatabaseWithMutex-COL-40-ReachabilityCardinality-06 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DatabaseWithMutex-COL-40-ReachabilityCardinality-05 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DatabaseWithMutex-COL-40-ReachabilityCardinality-04 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Fused 9 Parikh solutions to 1 different solutions.
Parikh walk visited 0 properties in 1 ms.
Support contains 12920 out of 12920 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 12920/12920 places, 12800/12800 transitions.
Applied a total of 0 rules in 529 ms. Remains 12920 /12920 variables (removed 0) and now considering 12800/12800 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 533 ms. Remains : 12920/12920 places, 12800/12800 transitions.
Incomplete random walk after 10000 steps, including 2 resets, run finished after 3194 ms. (steps per millisecond=3 ) properties (out of 2) seen :0
Interrupted Best-First random walk after 7289 steps, including 1 resets, run timeout after 5521 ms. (steps per millisecond=1 ) properties seen 0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 5122 ms. (steps per millisecond=1 ) properties (out of 2) seen :0
Finished probabilistic random walk after 51219 steps, run visited all 2 properties in 7337 ms. (steps per millisecond=6 )
Probabilistic random walk after 51219 steps, saw 51023 distinct states, run finished after 7339 ms. (steps per millisecond=6 ) properties seen :2
FORMULA DatabaseWithMutex-COL-40-ReachabilityCardinality-13 TRUE TECHNIQUES TOPOLOGICAL PROBABILISTIC_WALK
FORMULA DatabaseWithMutex-COL-40-ReachabilityCardinality-08 FALSE TECHNIQUES TOPOLOGICAL PROBABILISTIC_WALK
All properties solved without resorting to model-checking.
Total runtime 98581 ms.
pnml2lts-sym model.pnml --lace-workers=4 --vset=lddmc --saturation=sat -rbs,w2W,ru,hf --sylvan-sizes=20,28,20,28 --invariant=/tmp/464/inv_0_ --invariant=/tmp/464/inv_1_ --invariant=/tmp/464/inv_2_ --invariant=/tmp/464/inv_3_ --invariant=/tmp/464/inv_4_ --invariant=/tmp/464/inv_5_ --invariant=/tmp/464/inv_6_ --invariant=/tmp/464/inv_7_ --invariant=/tmp/464/inv_8_ --invariant=/tmp/464/inv_9_ --invariant=/tmp/464/inv_10_ --invariant=/tmp/464/inv_11_ --invariant=/tmp/464/inv_12_ --invariant=/tmp/464/inv_13_ --invariant=/tmp/464/inv_14_ --invariant=/tmp/464/inv_15_ --inv-par
Could not compute solution for formula : DatabaseWithMutex-COL-40-ReachabilityCardinality-00
Could not compute solution for formula : DatabaseWithMutex-COL-40-ReachabilityCardinality-01
Could not compute solution for formula : DatabaseWithMutex-COL-40-ReachabilityCardinality-02
Could not compute solution for formula : DatabaseWithMutex-COL-40-ReachabilityCardinality-03
Could not compute solution for formula : DatabaseWithMutex-COL-40-ReachabilityCardinality-04
Could not compute solution for formula : DatabaseWithMutex-COL-40-ReachabilityCardinality-05
Could not compute solution for formula : DatabaseWithMutex-COL-40-ReachabilityCardinality-06
Could not compute solution for formula : DatabaseWithMutex-COL-40-ReachabilityCardinality-07
Could not compute solution for formula : DatabaseWithMutex-COL-40-ReachabilityCardinality-08
Could not compute solution for formula : DatabaseWithMutex-COL-40-ReachabilityCardinality-09
Could not compute solution for formula : DatabaseWithMutex-COL-40-ReachabilityCardinality-10
Could not compute solution for formula : DatabaseWithMutex-COL-40-ReachabilityCardinality-11
Could not compute solution for formula : DatabaseWithMutex-COL-40-ReachabilityCardinality-12
Could not compute solution for formula : DatabaseWithMutex-COL-40-ReachabilityCardinality-13
Could not compute solution for formula : DatabaseWithMutex-COL-40-ReachabilityCardinality-14
Could not compute solution for formula : DatabaseWithMutex-COL-40-ReachabilityCardinality-15

BK_STOP 1678418954064

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

+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
+ export PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ export LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
+ LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202303021504.jar
+ VERSION=202303021504
+ echo 'Running Version 202303021504'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination ReachabilityCardinality -timeout 360 -rebuildPNML
mcc2023
rfs formula name DatabaseWithMutex-COL-40-ReachabilityCardinality-00
rfs formula type AG
rfs formula formula --invariant=/tmp/464/inv_0_
rfs formula name DatabaseWithMutex-COL-40-ReachabilityCardinality-01
rfs formula type AG
rfs formula formula --invariant=/tmp/464/inv_1_
rfs formula name DatabaseWithMutex-COL-40-ReachabilityCardinality-02
rfs formula type EF
rfs formula formula --invariant=/tmp/464/inv_2_
rfs formula name DatabaseWithMutex-COL-40-ReachabilityCardinality-03
rfs formula type AG
rfs formula formula --invariant=/tmp/464/inv_3_
rfs formula name DatabaseWithMutex-COL-40-ReachabilityCardinality-04
rfs formula type EF
rfs formula formula --invariant=/tmp/464/inv_4_
rfs formula name DatabaseWithMutex-COL-40-ReachabilityCardinality-05
rfs formula type EF
rfs formula formula --invariant=/tmp/464/inv_5_
rfs formula name DatabaseWithMutex-COL-40-ReachabilityCardinality-06
rfs formula type AG
rfs formula formula --invariant=/tmp/464/inv_6_
rfs formula name DatabaseWithMutex-COL-40-ReachabilityCardinality-07
rfs formula type AG
rfs formula formula --invariant=/tmp/464/inv_7_
rfs formula name DatabaseWithMutex-COL-40-ReachabilityCardinality-08
rfs formula type AG
rfs formula formula --invariant=/tmp/464/inv_8_
rfs formula name DatabaseWithMutex-COL-40-ReachabilityCardinality-09
rfs formula type AG
rfs formula formula --invariant=/tmp/464/inv_9_
rfs formula name DatabaseWithMutex-COL-40-ReachabilityCardinality-10
rfs formula type AG
rfs formula formula --invariant=/tmp/464/inv_10_
rfs formula name DatabaseWithMutex-COL-40-ReachabilityCardinality-11
rfs formula type EF
rfs formula formula --invariant=/tmp/464/inv_11_
rfs formula name DatabaseWithMutex-COL-40-ReachabilityCardinality-12
rfs formula type AG
rfs formula formula --invariant=/tmp/464/inv_12_
rfs formula name DatabaseWithMutex-COL-40-ReachabilityCardinality-13
rfs formula type EF
rfs formula formula --invariant=/tmp/464/inv_13_
rfs formula name DatabaseWithMutex-COL-40-ReachabilityCardinality-14
rfs formula type AG
rfs formula formula --invariant=/tmp/464/inv_14_
rfs formula name DatabaseWithMutex-COL-40-ReachabilityCardinality-15
rfs formula type EF
rfs formula formula --invariant=/tmp/464/inv_15_
pnml2lts-sym: Exploration order is bfs-prev
pnml2lts-sym: Saturation strategy is sat
pnml2lts-sym: Guided search strategy is unguided
pnml2lts-sym: Attractor strategy is default
pnml2lts-sym: opening model.pnml
pnml2lts-sym: Edge label is id
Warning: program compiled against libxml 210 using older 209
pnml2lts-sym, ** error **: pnml type "http://www.pnml.org/version-2009/grammar/symmetricnet" is not supported

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="DatabaseWithMutex-COL-40"
export BK_EXAMINATION="ReachabilityCardinality"
export BK_TOOL="ltsminxred"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"
export BK_BIN_PATH="/home/mcc/BenchKit/bin/"

# this is specific to your benchmark or test

export BIN_DIR="$HOME/BenchKit/bin"

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

# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-5348"
echo " Executing tool ltsminxred"
echo " Input is DatabaseWithMutex-COL-40, examination is ReachabilityCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r105-tall-167814482001054"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/DatabaseWithMutex-COL-40.tgz
mv DatabaseWithMutex-COL-40 execution
cd execution
if [ "ReachabilityCardinality" = "ReachabilityDeadlock" ] || [ "ReachabilityCardinality" = "UpperBounds" ] || [ "ReachabilityCardinality" = "QuasiLiveness" ] || [ "ReachabilityCardinality" = "StableMarking" ] || [ "ReachabilityCardinality" = "Liveness" ] || [ "ReachabilityCardinality" = "OneSafe" ] || [ "ReachabilityCardinality" = "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 [ "ReachabilityCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityCardinality" != "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 "ReachabilityCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityCardinality.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 '' ReachabilityCardinality.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "ReachabilityCardinality" = "ReachabilityDeadlock" ] || [ "ReachabilityCardinality" = "QuasiLiveness" ] || [ "ReachabilityCardinality" = "StableMarking" ] || [ "ReachabilityCardinality" = "Liveness" ] || [ "ReachabilityCardinality" = "OneSafe" ] ; then
echo "FORMULA_NAME ReachabilityCardinality"
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 ;