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.r268-smll-171654407200254.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 itstools
Input is Peterson-PT-2, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r268-smll-171654407200254
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 1.0M
-rw-r--r-- 1 mcc users 19K Apr 12 02:48 CTLCardinality.txt
-rw-r--r-- 1 mcc users 116K Apr 12 02:48 CTLCardinality.xml
-rw-r--r-- 1 mcc users 13K Apr 12 02:41 CTLFireability.txt
-rw-r--r-- 1 mcc users 73K Apr 12 02:41 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 7.2K Apr 23 07:42 LTLCardinality.txt
-rw-r--r-- 1 mcc users 33K Apr 23 07:42 LTLCardinality.xml
-rw-r--r-- 1 mcc users 5.9K Apr 23 07:42 LTLFireability.txt
-rw-r--r-- 1 mcc users 28K Apr 23 07:42 LTLFireability.xml
-rw-r--r-- 1 mcc users 42K Apr 12 02:54 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 262K Apr 12 02:54 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 42K Apr 12 02:52 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 224K Apr 12 02:52 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 2.7K Apr 23 07:42 UpperBounds.txt
-rw-r--r-- 1 mcc users 6.0K Apr 23 07:42 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 May 18 16:43 equiv_col
-rw-r--r-- 1 mcc users 2 May 18 16:43 instance
-rw-r--r-- 1 mcc users 6 May 18 16:43 iscolored
-rw-r--r-- 1 mcc users 100K 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 Peterson-PT-2-ReachabilityCardinality-2024-00
FORMULA_NAME Peterson-PT-2-ReachabilityCardinality-2024-01
FORMULA_NAME Peterson-PT-2-ReachabilityCardinality-2024-02
FORMULA_NAME Peterson-PT-2-ReachabilityCardinality-2024-03
FORMULA_NAME Peterson-PT-2-ReachabilityCardinality-2024-04
FORMULA_NAME Peterson-PT-2-ReachabilityCardinality-2024-05
FORMULA_NAME Peterson-PT-2-ReachabilityCardinality-2024-06
FORMULA_NAME Peterson-PT-2-ReachabilityCardinality-2024-07
FORMULA_NAME Peterson-PT-2-ReachabilityCardinality-2024-08
FORMULA_NAME Peterson-PT-2-ReachabilityCardinality-2024-09
FORMULA_NAME Peterson-PT-2-ReachabilityCardinality-2024-10
FORMULA_NAME Peterson-PT-2-ReachabilityCardinality-2024-11
FORMULA_NAME Peterson-PT-2-ReachabilityCardinality-2024-12
FORMULA_NAME Peterson-PT-2-ReachabilityCardinality-2024-13
FORMULA_NAME Peterson-PT-2-ReachabilityCardinality-2024-14
FORMULA_NAME Peterson-PT-2-ReachabilityCardinality-2024-15

=== Now, execution of the tool begins

BK_START 1716761867045

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=ReachabilityCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=Peterson-PT-2
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
ReachabilityCardinality PT
Running Version 202405141337
[2024-05-26 22:17:49] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityCardinality, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2024-05-26 22:17:49] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2024-05-26 22:17:49] [INFO ] Load time of PNML (sax parser for PT used): 264 ms
[2024-05-26 22:17:49] [INFO ] Transformed 102 places.
[2024-05-26 22:17:49] [INFO ] Transformed 126 transitions.
[2024-05-26 22:17:49] [INFO ] Found NUPN structural information;
[2024-05-26 22:17:49] [INFO ] Parsed PT model containing 102 places and 126 transitions and 384 arcs in 500 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityCardinality.xml in 70 ms.
Working with output stream class java.io.PrintStream
FORMULA Peterson-PT-2-ReachabilityCardinality-2024-08 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Peterson-PT-2-ReachabilityCardinality-2024-09 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Peterson-PT-2-ReachabilityCardinality-2024-13 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Peterson-PT-2-ReachabilityCardinality-2024-15 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
RANDOM walk for 40000 steps (8 resets) in 2864 ms. (13 steps per ms) remains 12/12 properties
[2024-05-26 22:17:50] [INFO ] Flatten gal took : 158 ms
BEST_FIRST walk for 40004 steps (8 resets) in 401 ms. (99 steps per ms) remains 12/12 properties
[2024-05-26 22:17:51] [INFO ] Flatten gal took : 73 ms
[2024-05-26 22:17:51] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality14384630670124759447.gal : 34 ms
[2024-05-26 22:17:51] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality18324507068136129397.prop : 41 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202405141337/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality14384630670124759447.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality18324507068136129397.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202405141337/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...330
Loading property file /tmp/ReachabilityCardinality18324507068136129397.prop.
BEST_FIRST walk for 40004 steps (8 resets) in 1165 ms. (34 steps per ms) remains 12/12 properties
SDD proceeding with computation,12 properties remain. new max is 4
SDD size :1 after 2
SDD proceeding with computation,12 properties remain. new max is 8
SDD size :2 after 7
SDD proceeding with computation,12 properties remain. new max is 16
SDD size :7 after 8
SDD proceeding with computation,12 properties remain. new max is 32
SDD size :8 after 9
SDD proceeding with computation,12 properties remain. new max is 64
SDD size :9 after 49
SDD proceeding with computation,12 properties remain. new max is 128
SDD size :49 after 90
SDD proceeding with computation,12 properties remain. new max is 256
SDD size :90 after 183
BEST_FIRST walk for 40004 steps (8 resets) in 206 ms. (193 steps per ms) remains 12/12 properties
SDD proceeding with computation,12 properties remain. new max is 512
SDD size :183 after 874
SDD proceeding with computation,12 properties remain. new max is 1024
SDD size :874 after 3793
BEST_FIRST walk for 40004 steps (8 resets) in 380 ms. (104 steps per ms) remains 12/12 properties
SDD proceeding with computation,12 properties remain. new max is 2048
SDD size :3793 after 7145
BEST_FIRST walk for 40004 steps (8 resets) in 979 ms. (40 steps per ms) remains 12/12 properties
BEST_FIRST walk for 40004 steps (8 resets) in 317 ms. (125 steps per ms) remains 12/12 properties
BEST_FIRST walk for 40004 steps (8 resets) in 223 ms. (178 steps per ms) remains 12/12 properties
BEST_FIRST walk for 40004 steps (8 resets) in 133 ms. (298 steps per ms) remains 12/12 properties
BEST_FIRST walk for 40004 steps (8 resets) in 150 ms. (264 steps per ms) remains 12/12 properties
BEST_FIRST walk for 40004 steps (8 resets) in 190 ms. (209 steps per ms) remains 12/12 properties
Reachability property Peterson-PT-2-ReachabilityCardinality-2024-11 is true.
FORMULA Peterson-PT-2-ReachabilityCardinality-2024-11 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
SDD proceeding with computation,11 properties remain. new max is 2048
SDD size :16216 after 19291
BEST_FIRST walk for 40004 steps (8 resets) in 356 ms. (112 steps per ms) remains 12/12 properties
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst,20754,0.93261,17912,2,3437,18,43763,17,0,746,39805,0
Total reachable state count : 20754

Verifying 12 reachability properties.
Invariant property Peterson-PT-2-ReachabilityCardinality-2024-00 is true.
FORMULA Peterson-PT-2-ReachabilityCardinality-2024-00 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
Peterson-PT-2-ReachabilityCardinality-2024-00,0,0.935923,18172,1,0,18,43763,17,0,751,39805,0
Reachability property Peterson-PT-2-ReachabilityCardinality-2024-01 does not hold.
FORMULA Peterson-PT-2-ReachabilityCardinality-2024-01 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
No reachable states exhibit your property : Peterson-PT-2-ReachabilityCardinality-2024-01

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
Peterson-PT-2-ReachabilityCardinality-2024-01,0,0.954756,18272,1,0,18,43763,17,0,925,39805,0
Reachability property Peterson-PT-2-ReachabilityCardinality-2024-02 does not hold.
FORMULA Peterson-PT-2-ReachabilityCardinality-2024-02 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
No reachable states exhibit your property : Peterson-PT-2-ReachabilityCardinality-2024-02

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
Peterson-PT-2-ReachabilityCardinality-2024-02,0,0.965546,18272,1,0,18,43763,17,0,1099,39805,0
Invariant property Peterson-PT-2-ReachabilityCardinality-2024-03 is true.
FORMULA Peterson-PT-2-ReachabilityCardinality-2024-03 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING

BEST_FIRST walk for 40004 steps (8 resets) in 266 ms. (149 steps per ms) remains 12/12 properties
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
Peterson-PT-2-ReachabilityCardinality-2024-03,0,0.969683,18272,1,0,18,43763,17,0,1117,39805,0
Reachability property Peterson-PT-2-ReachabilityCardinality-2024-04 does not hold.
FORMULA Peterson-PT-2-ReachabilityCardinality-2024-04 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
No reachable states exhibit your property : Peterson-PT-2-ReachabilityCardinality-2024-04

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
Peterson-PT-2-ReachabilityCardinality-2024-04,0,1.01715,18272,1,0,18,43763,17,0,1790,39805,0
Reachability property Peterson-PT-2-ReachabilityCardinality-2024-05 does not hold.
FORMULA Peterson-PT-2-ReachabilityCardinality-2024-05 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
No reachable states exhibit your property : Peterson-PT-2-ReachabilityCardinality-2024-05

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
Peterson-PT-2-ReachabilityCardinality-2024-05,0,1.02769,18272,1,0,18,43763,17,0,1888,39805,0
Invariant property Peterson-PT-2-ReachabilityCardinality-2024-06 is true.
FORMULA Peterson-PT-2-ReachabilityCardinality-2024-06 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
Peterson-PT-2-ReachabilityCardinality-2024-06,0,1.05042,18272,1,0,18,43763,17,0,2194,39805,0
Invariant property Peterson-PT-2-ReachabilityCardinality-2024-07 is true.
FORMULA Peterson-PT-2-ReachabilityCardinality-2024-07 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
Peterson-PT-2-ReachabilityCardinality-2024-07,0,1.06325,18272,1,0,18,43763,17,0,2368,39805,0
Invariant property Peterson-PT-2-ReachabilityCardinality-2024-10 is true.
FORMULA Peterson-PT-2-ReachabilityCardinality-2024-10 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
Peterson-PT-2-ReachabilityCardinality-2024-10,0,1.06494,18272,1,0,18,43763,17,0,2372,39805,0
Reachability property Peterson-PT-2-ReachabilityCardinality-2024-11 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
Peterson-PT-2-ReachabilityCardinality-2024-11,3,1.0665,18272,2,105,18,43763,18,0,2401,39805,0
Invariant property Peterson-PT-2-ReachabilityCardinality-2024-12 is true.
FORMULA Peterson-PT-2-ReachabilityCardinality-2024-12 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
Peterson-PT-2-ReachabilityCardinality-2024-12,0,1.08122,18272,1,0,18,43763,18,0,2450,39805,0
Invariant property Peterson-PT-2-ReachabilityCardinality-2024-14 is true.
FORMULA Peterson-PT-2-ReachabilityCardinality-2024-14 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
Peterson-PT-2-ReachabilityCardinality-2024-14,0,1.08765,18272,1,0,18,43763,18,0,2469,39805,0
Probably explored full state space saw : 20754 states, properties seen :1
Probabilistic random walk after 83016 steps, saw 20754 distinct states, run finished after 1108 ms. (steps per millisecond=74 ) properties seen :1
Explored full state space saw : 20754 states, properties seen :0
Exhaustive walk after 83016 steps, saw 20754 distinct states, run finished after 797 ms. (steps per millisecond=104 ) properties seen :0
All properties solved without resorting to model-checking.
Total runtime 5166 ms.

BK_STOP 1716761874559

--------------------
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
+ [[ ReachabilityCardinality = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution ReachabilityCardinality -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_1.0.0.202405141337.jar
+ VERSION=202405141337
+ echo 'Running Version 202405141337'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination ReachabilityCardinality -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="Peterson-PT-2"
export BK_EXAMINATION="ReachabilityCardinality"
export BK_TOOL="itstools"
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 itstools"
echo " Input is Peterson-PT-2, 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 r268-smll-171654407200254"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/Peterson-PT-2.tgz
mv Peterson-PT-2 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 ;