fond
Model Checking Contest 2023
13th edition, Paris, France, April 26, 2023 (at TOOLympics II)
Execution of r297-tall-167873950200290
Last Updated
May 14, 2023

About the Execution of LTSMin+red for PhilosophersDyn-COL-20

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
16184.331 238438.00 274500.00 18334.70 ??????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.r297-tall-167873950200290.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 PhilosophersDyn-COL-20, examination is CTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r297-tall-167873950200290
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 480K
-rw-r--r-- 1 mcc users 6.8K Feb 26 13:09 CTLCardinality.txt
-rw-r--r-- 1 mcc users 65K Feb 26 13:09 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.1K Feb 26 13:03 CTLFireability.txt
-rw-r--r-- 1 mcc users 53K Feb 26 13:03 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:40 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.3K Jan 29 11:40 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 4.1K Feb 25 16:34 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K Feb 25 16:34 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.4K Feb 25 16:34 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K Feb 25 16:34 LTLFireability.xml
-rw-r--r-- 1 mcc users 14K Feb 26 14:31 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 137K Feb 26 14:31 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 6.8K Feb 26 14:20 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 50K Feb 26 14:20 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Feb 25 16:34 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Feb 25 16:34 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 5 18:23 equiv_pt
-rw-r--r-- 1 mcc users 3 Mar 5 18:23 instance
-rw-r--r-- 1 mcc users 5 Mar 5 18:23 iscolored
-rw-r--r-- 1 mcc users 32K Mar 5 18:23 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 PhilosophersDyn-COL-20-CTLFireability-00
FORMULA_NAME PhilosophersDyn-COL-20-CTLFireability-01
FORMULA_NAME PhilosophersDyn-COL-20-CTLFireability-02
FORMULA_NAME PhilosophersDyn-COL-20-CTLFireability-03
FORMULA_NAME PhilosophersDyn-COL-20-CTLFireability-04
FORMULA_NAME PhilosophersDyn-COL-20-CTLFireability-05
FORMULA_NAME PhilosophersDyn-COL-20-CTLFireability-06
FORMULA_NAME PhilosophersDyn-COL-20-CTLFireability-07
FORMULA_NAME PhilosophersDyn-COL-20-CTLFireability-08
FORMULA_NAME PhilosophersDyn-COL-20-CTLFireability-09
FORMULA_NAME PhilosophersDyn-COL-20-CTLFireability-10
FORMULA_NAME PhilosophersDyn-COL-20-CTLFireability-11
FORMULA_NAME PhilosophersDyn-COL-20-CTLFireability-12
FORMULA_NAME PhilosophersDyn-COL-20-CTLFireability-13
FORMULA_NAME PhilosophersDyn-COL-20-CTLFireability-14
FORMULA_NAME PhilosophersDyn-COL-20-CTLFireability-15

=== Now, execution of the tool begins

BK_START 1679483952264

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=CTLFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=PhilosophersDyn-COL-20
Applying reductions before tool ltsmin
Invoking reducer
Running Version 202303021504
[2023-03-22 11:19:14] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, CTLFireability, -timeout, 360, -rebuildPNML]
[2023-03-22 11:19:14] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-22 11:19:14] [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.
[2023-03-22 11:19:14] [WARNING] Using fallBack plugin, rng conformance not checked
[2023-03-22 11:19:14] [INFO ] Load time of PNML (colored model parsed with PNMLFW) : 562 ms
[2023-03-22 11:19:14] [INFO ] Imported 8 HL places and 7 HL transitions for a total of 540 PT places and 17240.0 transition bindings in 26 ms.
Parsed 16 properties from file /home/mcc/execution/CTLFireability.xml in 14 ms.
[2023-03-22 11:19:14] [INFO ] Built PT skeleton of HLPN with 8 places and 7 transitions 33 arcs in 4 ms.
[2023-03-22 11:19:14] [INFO ] Skeletonized 5 HLPN properties in 1 ms. Removed 11 properties that had guard overlaps.
Computed a total of 0 stabilizing places and 0 stable transitions
Remains 5 properties that can be checked using skeleton over-approximation.
Computed a total of 0 stabilizing places and 0 stable transitions
Incomplete random walk after 10014 steps, including 449 resets, run finished after 72 ms. (steps per millisecond=139 ) properties (out of 10) seen :9
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 35 ms. (steps per millisecond=285 ) properties (out of 1) seen :0
Running SMT prover for 1 properties.
// Phase 1: matrix 7 rows 8 cols
[2023-03-22 11:19:15] [INFO ] Computed 3 place invariants in 7 ms
[2023-03-22 11:19:15] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2023-03-22 11:19:15] [INFO ] After 175ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
[2023-03-22 11:19:15] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2023-03-22 11:19:15] [INFO ] After 12ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2023-03-22 11:19:15] [INFO ] State equation strengthened by 4 read => feed constraints.
[2023-03-22 11:19:15] [INFO ] After 6ms SMT Verify possible using 4 Read/Feed constraints in natural domain returned unsat :0 sat :1
[2023-03-22 11:19:15] [INFO ] After 11ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
Attempting to minimize the solution found.
Minimization took 10 ms.
[2023-03-22 11:19:15] [INFO ] After 75ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
Parikh walk visited 0 properties in 1 ms.
Support contains 5 out of 8 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 8/8 places, 7/7 transitions.
Applied a total of 0 rules in 8 ms. Remains 8 /8 variables (removed 0) and now considering 7/7 (removed 0) transitions.
[2023-03-22 11:19:15] [INFO ] Invariant cache hit.
[2023-03-22 11:19:15] [INFO ] Dead Transitions using invariants and state equation in 37 ms found 0 transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 48 ms. Remains : 8/8 places, 7/7 transitions.
Incomplete random walk after 10007 steps, including 455 resets, run finished after 16 ms. (steps per millisecond=625 ) properties (out of 1) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 16 ms. (steps per millisecond=625 ) properties (out of 1) seen :0
Probably explored full state space saw : 2014 states, properties seen :0
Probabilistic random walk after 6629 steps, saw 2014 distinct states, run finished after 30 ms. (steps per millisecond=220 ) properties seen :0
Explored full state space saw : 2014 states, properties seen :0
Exhaustive walk after 6629 steps, saw 2014 distinct states, run finished after 10 ms. (steps per millisecond=662 ) properties seen :0
Successfully simplified 1 atomic propositions for a total of 5 simplifications.
[2023-03-22 11:19:15] [INFO ] Initial state reduction rules for CTL removed 1 formulas.
[2023-03-22 11:19:15] [INFO ] Flatten gal took : 15 ms
FORMULA PhilosophersDyn-COL-20-CTLFireability-06 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2023-03-22 11:19:15] [INFO ] Flatten gal took : 2 ms
Domain [Philosopher(20), Philosopher(20)] of place Neighbourhood breaks symmetries in sort Philosopher
[2023-03-22 11:19:15] [INFO ] Unfolded HLPN to a Petri net with 540 places and 17220 transitions 140780 arcs in 216 ms.
[2023-03-22 11:19:15] [INFO ] Unfolded 15 HLPN properties in 33 ms.
[2023-03-22 11:19:15] [INFO ] Reduced 379 identical enabling conditions.
[2023-03-22 11:19:15] [INFO ] Reduced 379 identical enabling conditions.
[2023-03-22 11:19:16] [INFO ] Reduced 379 identical enabling conditions.
[2023-03-22 11:19:16] [INFO ] Reduced 379 identical enabling conditions.
[2023-03-22 11:19:16] [INFO ] Reduced 379 identical enabling conditions.
[2023-03-22 11:19:16] [INFO ] Reduced 379 identical enabling conditions.
[2023-03-22 11:19:16] [INFO ] Reduced 379 identical enabling conditions.
[2023-03-22 11:19:16] [INFO ] Reduced 379 identical enabling conditions.
[2023-03-22 11:19:16] [INFO ] Reduced 379 identical enabling conditions.
[2023-03-22 11:19:16] [INFO ] Reduced 379 identical enabling conditions.
[2023-03-22 11:19:16] [INFO ] Reduced 379 identical enabling conditions.
[2023-03-22 11:19:16] [INFO ] Reduced 379 identical enabling conditions.
[2023-03-22 11:19:16] [INFO ] Reduced 379 identical enabling conditions.
[2023-03-22 11:19:16] [INFO ] Reduced 379 identical enabling conditions.
[2023-03-22 11:19:16] [INFO ] Reduced 379 identical enabling conditions.
[2023-03-22 11:19:16] [INFO ] Reduced 379 identical enabling conditions.
[2023-03-22 11:19:16] [INFO ] Reduced 379 identical enabling conditions.
[2023-03-22 11:19:16] [INFO ] Reduced 379 identical enabling conditions.
[2023-03-22 11:19:16] [INFO ] Reduced 379 identical enabling conditions.
[2023-03-22 11:19:16] [INFO ] Reduced 379 identical enabling conditions.
Ensure Unique test removed 190 transitions
Reduce redundant transitions removed 190 transitions.
Support contains 540 out of 540 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 540/540 places, 17030/17030 transitions.
Applied a total of 0 rules in 130 ms. Remains 540 /540 variables (removed 0) and now considering 17030/17030 (removed 0) transitions.
[2023-03-22 11:20:24] [INFO ] Flow matrix only has 15510 transitions (discarded 1520 similar events)
// Phase 1: matrix 15510 rows 540 cols
[2023-03-22 11:20:25] [INFO ] Computed 79 place invariants in 844 ms
[2023-03-22 11:20:32] [INFO ] Dead Transitions using invariants and state equation in 8303 ms found 1560 transitions.
Found 1560 dead transitions using SMT.
Drop transitions removed 1560 transitions
Dead transitions reduction (with SMT) triggered by suspicious arc values removed 1560 transitions.
// Phase 1: matrix 15470 rows 540 cols
[2023-03-22 11:20:34] [INFO ] Computed 79 place invariants in 1855 ms
[2023-03-22 11:20:34] [INFO ] Implicit Places using invariants in 2006 ms returned []
Implicit Place search using SMT only with invariants took 2007 ms to find 0 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 540/540 places, 15470/17030 transitions.
Applied a total of 0 rules in 114 ms. Remains 540 /540 variables (removed 0) and now considering 15470/15470 (removed 0) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 10569 ms. Remains : 540/540 places, 15470/17030 transitions.
Support contains 540 out of 540 places after structural reductions.
[2023-03-22 11:20:41] [INFO ] Flatten gal took : 2910 ms
[2023-03-22 11:21:15] [INFO ] Flatten gal took : 4307 ms
[2023-03-22 11:21:51] [INFO ] Input system was already deterministic with 15470 transitions.
Incomplete random walk after 10000 steps, including 1144 resets, run finished after 1550 ms. (steps per millisecond=6 ) properties (out of 27) seen :24
Interrupted Best-First random walk after 4935 steps, including 14 resets, run timeout after 5113 ms. (steps per millisecond=0 ) properties seen 0
Interrupted Best-First random walk after 4043 steps, including 1 resets, run timeout after 5009 ms. (steps per millisecond=0 ) properties seen 0
Incomplete Best-First random walk after 10001 steps, including 37 resets, run finished after 407 ms. (steps per millisecond=24 ) properties (out of 3) seen :0
Running SMT prover for 3 properties.
[2023-03-22 11:22:06] [INFO ] Invariant cache hit.
pnml2lts-sym model.pnml --lace-workers=4 --vset=lddmc --saturation=sat -rbs,w2W,ru,hf --sylvan-sizes=20,28,20,28 --ctl=/tmp/489/ctl_0_ --ctl=/tmp/489/ctl_1_ --ctl=/tmp/489/ctl_2_ --ctl=/tmp/489/ctl_3_ --ctl=/tmp/489/ctl_4_ --ctl=/tmp/489/ctl_5_ --ctl=/tmp/489/ctl_6_ --ctl=/tmp/489/ctl_7_ --ctl=/tmp/489/ctl_8_ --ctl=/tmp/489/ctl_9_ --ctl=/tmp/489/ctl_10_ --ctl=/tmp/489/ctl_11_ --ctl=/tmp/489/ctl_12_ --ctl=/tmp/489/ctl_13_ --ctl=/tmp/489/ctl_14_ --ctl=/tmp/489/ctl_15_ --mu-par --mu-opt
Could not compute solution for formula : PhilosophersDyn-COL-20-CTLFireability-00
Could not compute solution for formula : PhilosophersDyn-COL-20-CTLFireability-01
Could not compute solution for formula : PhilosophersDyn-COL-20-CTLFireability-02
Could not compute solution for formula : PhilosophersDyn-COL-20-CTLFireability-03
Could not compute solution for formula : PhilosophersDyn-COL-20-CTLFireability-04
Could not compute solution for formula : PhilosophersDyn-COL-20-CTLFireability-05
Could not compute solution for formula : PhilosophersDyn-COL-20-CTLFireability-06
Could not compute solution for formula : PhilosophersDyn-COL-20-CTLFireability-07
Could not compute solution for formula : PhilosophersDyn-COL-20-CTLFireability-08
Could not compute solution for formula : PhilosophersDyn-COL-20-CTLFireability-09
Could not compute solution for formula : PhilosophersDyn-COL-20-CTLFireability-10
Could not compute solution for formula : PhilosophersDyn-COL-20-CTLFireability-11
Could not compute solution for formula : PhilosophersDyn-COL-20-CTLFireability-12
Could not compute solution for formula : PhilosophersDyn-COL-20-CTLFireability-13
Could not compute solution for formula : PhilosophersDyn-COL-20-CTLFireability-14
Could not compute solution for formula : PhilosophersDyn-COL-20-CTLFireability-15

BK_STOP 1679484190702

--------------------
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//
++ ls /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202303021504.jar
++ perl -pe 's/.*\.//g'
+ VERSION=202303021504
+ echo 'Running Version 202303021504'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination CTLFireability -timeout 360 -rebuildPNML
mcc2023
ctl formula name PhilosophersDyn-COL-20-CTLFireability-00
ctl formula formula --ctl=/tmp/489/ctl_0_
ctl formula name PhilosophersDyn-COL-20-CTLFireability-01
ctl formula formula --ctl=/tmp/489/ctl_1_
ctl formula name PhilosophersDyn-COL-20-CTLFireability-02
ctl formula formula --ctl=/tmp/489/ctl_2_
ctl formula name PhilosophersDyn-COL-20-CTLFireability-03
ctl formula formula --ctl=/tmp/489/ctl_3_
ctl formula name PhilosophersDyn-COL-20-CTLFireability-04
ctl formula formula --ctl=/tmp/489/ctl_4_
ctl formula name PhilosophersDyn-COL-20-CTLFireability-05
ctl formula formula --ctl=/tmp/489/ctl_5_
ctl formula name PhilosophersDyn-COL-20-CTLFireability-06
ctl formula formula --ctl=/tmp/489/ctl_6_
ctl formula name PhilosophersDyn-COL-20-CTLFireability-07
ctl formula formula --ctl=/tmp/489/ctl_7_
ctl formula name PhilosophersDyn-COL-20-CTLFireability-08
ctl formula formula --ctl=/tmp/489/ctl_8_
ctl formula name PhilosophersDyn-COL-20-CTLFireability-09
ctl formula formula --ctl=/tmp/489/ctl_9_
ctl formula name PhilosophersDyn-COL-20-CTLFireability-10
ctl formula formula --ctl=/tmp/489/ctl_10_
ctl formula name PhilosophersDyn-COL-20-CTLFireability-11
ctl formula formula --ctl=/tmp/489/ctl_11_
ctl formula name PhilosophersDyn-COL-20-CTLFireability-12
ctl formula formula --ctl=/tmp/489/ctl_12_
ctl formula name PhilosophersDyn-COL-20-CTLFireability-13
ctl formula formula --ctl=/tmp/489/ctl_13_
ctl formula name PhilosophersDyn-COL-20-CTLFireability-14
ctl formula formula --ctl=/tmp/489/ctl_14_
ctl formula name PhilosophersDyn-COL-20-CTLFireability-15
ctl formula formula --ctl=/tmp/489/ctl_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="PhilosophersDyn-COL-20"
export BK_EXAMINATION="CTLFireability"
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 PhilosophersDyn-COL-20, examination is CTLFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r297-tall-167873950200290"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/PhilosophersDyn-COL-20.tgz
mv PhilosophersDyn-COL-20 execution
cd execution
if [ "CTLFireability" = "ReachabilityDeadlock" ] || [ "CTLFireability" = "UpperBounds" ] || [ "CTLFireability" = "QuasiLiveness" ] || [ "CTLFireability" = "StableMarking" ] || [ "CTLFireability" = "Liveness" ] || [ "CTLFireability" = "OneSafe" ] || [ "CTLFireability" = "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 [ "CTLFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "CTLFireability" != "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 "CTLFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property CTLFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "CTLFireability.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 '' CTLFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "CTLFireability" = "ReachabilityDeadlock" ] || [ "CTLFireability" = "QuasiLiveness" ] || [ "CTLFireability" = "StableMarking" ] || [ "CTLFireability" = "Liveness" ] || [ "CTLFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME CTLFireability"
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 ;