About the Execution of ITS-Tools for VehicularWifi-COL-none
| Execution Summary | |||||
| Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
| 0.000 | 8825.00 | 0.00 | 0.00 | TFTFTTTTTFTFTFTT | normal |
Execution Chart
Sorry, for this execution, no execution chart could be reported.
Trace from the execution
Formatting '/data/fkordon/mcc2025-input.r240-tall-174915590700918.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2025-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 2-5832
Executing tool itstools
Input is VehicularWifi-COL-none, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r240-tall-174915590700918
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 672K
-rw-r--r-- 1 mcc users 8.5K May 29 14:48 CTLCardinality.txt
-rw-r--r-- 1 mcc users 79K May 29 14:48 CTLCardinality.xml
-rw-r--r-- 1 mcc users 7.1K May 29 14:48 CTLFireability.txt
-rw-r--r-- 1 mcc users 54K May 29 14:48 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 29 14:33 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 5.7K May 29 14:33 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 4.3K May 29 14:48 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K May 29 14:48 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.8K May 29 14:48 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K May 29 14:48 LTLFireability.xml
-rw-r--r-- 1 mcc users 15K May 29 14:48 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 132K May 29 14:48 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 11K May 29 14:48 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 70K May 29 14:48 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K May 29 14:48 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K May 29 14:48 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 29 14:33 equiv_pt
-rw-r--r-- 1 mcc users 5 May 29 14:33 instance
-rw-r--r-- 1 mcc users 5 May 29 14:33 iscolored
-rw-r--r-- 1 mcc users 188K May 29 14:33 model.pnml
--------------------
content from stdout:
=== Data for post analysis generated by BenchKit (invocation template)
The expected result is a vector of booleans
BOOL_VECTOR
echo here is the order used to build the result vector(from xml file)
FORMULA_NAME VehicularWifi-COL-none-ReachabilityCardinality-2025-00
FORMULA_NAME VehicularWifi-COL-none-ReachabilityCardinality-2025-01
FORMULA_NAME VehicularWifi-COL-none-ReachabilityCardinality-2025-02
FORMULA_NAME VehicularWifi-COL-none-ReachabilityCardinality-2025-03
FORMULA_NAME VehicularWifi-COL-none-ReachabilityCardinality-2025-04
FORMULA_NAME VehicularWifi-COL-none-ReachabilityCardinality-2025-05
FORMULA_NAME VehicularWifi-COL-none-ReachabilityCardinality-2025-06
FORMULA_NAME VehicularWifi-COL-none-ReachabilityCardinality-2025-07
FORMULA_NAME VehicularWifi-COL-none-ReachabilityCardinality-2025-08
FORMULA_NAME VehicularWifi-COL-none-ReachabilityCardinality-2025-09
FORMULA_NAME VehicularWifi-COL-none-ReachabilityCardinality-2025-10
FORMULA_NAME VehicularWifi-COL-none-ReachabilityCardinality-2025-11
FORMULA_NAME VehicularWifi-COL-none-ReachabilityCardinality-2025-12
FORMULA_NAME VehicularWifi-COL-none-ReachabilityCardinality-2025-13
FORMULA_NAME VehicularWifi-COL-none-ReachabilityCardinality-2025-14
FORMULA_NAME VehicularWifi-COL-none-ReachabilityCardinality-2025-15
=== Now, execution of the tool begins
BK_START 1749287428337
Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=ReachabilityCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=VehicularWifi-COL-none
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is COL
ReachabilityCardinality COL
Running Version 202505121319
[2025-06-07 09:10:29] [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]
[2025-06-07 09:10:29] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2025-06-07 09:10:29] [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.
[2025-06-07 09:10:30] [WARNING] Using fallBack plugin, rng conformance not checked
[2025-06-07 09:10:30] [INFO ] Load time of PNML (colored model parsed with PNMLFW) : 814 ms
[2025-06-07 09:10:30] [INFO ] Detected 1 constant HL places corresponding to 81920 PT places.
[2025-06-07 09:10:30] [INFO ] Imported 21 HL places and 41 HL transitions for a total of 115566 PT places and 379924.0 transition bindings in 95 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityCardinality.xml in 26 ms.
Working with output stream class java.io.PrintStream
FORMULA VehicularWifi-COL-none-ReachabilityCardinality-2025-02 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2025-06-07 09:10:30] [INFO ] Built PT skeleton of HLPN with 21 places and 41 transitions 136 arcs in 8 ms.
[2025-06-07 09:10:30] [INFO ] Skeletonized 15 HLPN properties in 7 ms.
Remains 15 properties that can be checked using skeleton over-approximation.
Initial state reduction rules removed 4 formulas.
FORMULA VehicularWifi-COL-none-ReachabilityCardinality-2025-04 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA VehicularWifi-COL-none-ReachabilityCardinality-2025-05 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA VehicularWifi-COL-none-ReachabilityCardinality-2025-06 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA VehicularWifi-COL-none-ReachabilityCardinality-2025-13 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Reduce places removed 1 places and 0 transitions.
Computed a total of 0 stabilizing places and 0 stable transitions
Ensure Unique test removed 10 transitions
Reduce redundant transitions removed 10 transitions.
[2025-06-07 09:10:31] [INFO ] Flatten gal took : 47 ms
[2025-06-07 09:10:31] [INFO ] Flatten gal took : 12 ms
[2025-06-07 09:10:31] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality13157692958158703909.gal : 10 ms
[2025-06-07 09:10:31] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality12976679834733328616.prop : 7 ms
RANDOM walk for 40000 steps (8 resets) in 801 ms. (49 steps per ms) remains 6/11 properties
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality13157692958158703909.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality12976679834733328616.prop' '--nowitness' '--gen-order' 'FOLLOW'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...330
Loading property file /tmp/ReachabilityCardinality12976679834733328616.prop.
Reachability property VehicularWifi-COL-none-ReachabilityCardinality-2025-12 is true.
SDD proceeding with computation,10 properties remain. new max is 2
SDD size :1 after 3
Invariant property VehicularWifi-COL-none-ReachabilityCardinality-2025-09 does not hold.
Invariant property VehicularWifi-COL-none-ReachabilityCardinality-2025-01 does not hold.
SDD proceeding with computation,8 properties remain. new max is 2
SDD size :3 after 15
SDD proceeding with computation,8 properties remain. new max is 4
SDD size :15 after 18
SDD proceeding with computation,8 properties remain. new max is 8
SDD size :18 after 59
SDD proceeding with computation,8 properties remain. new max is 16
SDD size :59 after 63
SDD proceeding with computation,8 properties remain. new max is 32
SDD size :63 after 138
SDD proceeding with computation,8 properties remain. new max is 64
SDD size :138 after 309
SDD proceeding with computation,8 properties remain. new max is 128
SDD size :309 after 579
SDD proceeding with computation,8 properties remain. new max is 256
SDD size :579 after 1143
SDD proceeding with computation,8 properties remain. new max is 512
SDD size :1143 after 2217
BEST_FIRST walk for 40004 steps (8 resets) in 403 ms. (99 steps per ms) remains 6/6 properties
SDD proceeding with computation,8 properties remain. new max is 1024
SDD size :2217 after 4404
BEST_FIRST walk for 40003 steps (8 resets) in 288 ms. (138 steps per ms) remains 6/6 properties
BEST_FIRST walk for 40003 steps (8 resets) in 145 ms. (273 steps per ms) remains 6/6 properties
Invariant property VehicularWifi-COL-none-ReachabilityCardinality-2025-11 does not hold.
SDD proceeding with computation,7 properties remain. new max is 1024
SDD size :4404 after 8706
BEST_FIRST walk for 40004 steps (8 resets) in 603 ms. (66 steps per ms) remains 6/6 properties
BEST_FIRST walk for 40004 steps (8 resets) in 95 ms. (416 steps per ms) remains 6/6 properties
BEST_FIRST walk for 40003 steps (8 resets) in 132 ms. (300 steps per ms) remains 6/6 properties
SDD proceeding with computation,7 properties remain. new max is 2048
SDD size :8706 after 13035
[2025-06-07 09:10:31] [INFO ] Flow matrix only has 30 transitions (discarded 1 similar events)
// Phase 1: matrix 30 rows 20 cols
[2025-06-07 09:10:31] [INFO ] Computed 5 invariants in 7 ms
[2025-06-07 09:10:31] [INFO ] State equation strengthened by 10 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
Problem VehicularWifi-COL-none-ReachabilityCardinality-2025-07 is UNSAT
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/20 variables, 4/4 constraints. Problems are: Problem set: 1 solved, 5 unsolved
Problem VehicularWifi-COL-none-ReachabilityCardinality-2025-00 is UNSAT
Problem VehicularWifi-COL-none-ReachabilityCardinality-2025-03 is UNSAT
Problem VehicularWifi-COL-none-ReachabilityCardinality-2025-08 is UNSAT
Problem VehicularWifi-COL-none-ReachabilityCardinality-2025-10 is UNSAT
Problem VehicularWifi-COL-none-ReachabilityCardinality-2025-15 is UNSAT
After SMT solving in domain Real declared 20/50 variables, and 5 constraints, problems are : Problem set: 6 solved, 0 unsolved in 153 ms.
Refiners :[Positive P Invariants (semi-flows): 4/4 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 0/20 constraints, ReadFeed: 0/10 constraints, PredecessorRefiner: 6/6 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 204ms problems are : Problem set: 6 solved, 0 unsolved
Skipping Parikh replay, no witness traces provided.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
RANDOM walk for 0 steps (0 resets) in 4 ms. (0 steps per ms) remains 0/0 properties
[2025-06-07 09:10:31] [INFO ] Flatten gal took : 4 ms
[2025-06-07 09:10:31] [INFO ] Flatten gal took : 3 ms
RANDOM walk for 0 steps (0 resets) in 4 ms. (0 steps per ms) remains 0/0 properties
Finished probabilistic random walk after 0 steps, run visited all 0 properties in 0 ms. (steps per millisecond=0 )
[2025-06-07 09:10:31] [INFO ] Flatten gal took : 3 ms
[2025-06-07 09:10:31] [INFO ] Flatten gal took : 4 ms
[2025-06-07 09:10:31] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality7064890119708870250.gal : 2 ms
[2025-06-07 09:10:31] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality10785611267925227550.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality7064890119708870250.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality10785611267925227550.prop' '--nowitness' '--gen-order' 'FOLLOW'
ITS runner timed out or was interrupted.
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
Loading property file /tmp/ReachabilityCardinality10785611267925227550.prop.
Found states matching all0 target predicate
Will report total states built up to this point. Computation was interrupted after 3 fixpoint passes
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,3,0.005504,4100,2,29,5,91,6,0,116,46,0
Total reachable state count : 3
ITS tools runner thread asked to quit. Dying gracefully.
FORMULA VehicularWifi-COL-none-ReachabilityCardinality-2025-00 TRUE TECHNIQUES CPN_APPROX
FORMULA VehicularWifi-COL-none-ReachabilityCardinality-2025-03 FALSE TECHNIQUES CPN_APPROX
FORMULA VehicularWifi-COL-none-ReachabilityCardinality-2025-07 TRUE TECHNIQUES CPN_APPROX
FORMULA VehicularWifi-COL-none-ReachabilityCardinality-2025-08 TRUE TECHNIQUES CPN_APPROX
FORMULA VehicularWifi-COL-none-ReachabilityCardinality-2025-10 TRUE TECHNIQUES CPN_APPROX
FORMULA VehicularWifi-COL-none-ReachabilityCardinality-2025-15 TRUE TECHNIQUES CPN_APPROX
Arc [14:1*[$sa, $sb, $p, (MOD (ADD (MOD (MINUS $b 1) 1024) 1024) 1024)]] contains successor/predecessor on variables of sort BackoffStage
Arc [13:1*[$sa, $sb, $p, (MOD (ADD $tx 1) 20)]] contains successor/predecessor on variables of sort TxCount
Transition CorrectPacketButAck forces synchronizations/join behavior on parameter p2 of sort Pr
Arc [4:1*[$sa, $sb, $p, (MOD (ADD $pt 1) 4)]] contains successor/predecessor on variables of sort PT
Domain [St(2), St(2), Pr(4), PT(4)] of place Sense breaks symmetries in sort St
[2025-06-07 09:10:33] [INFO ] Unfolded HLPN to a Petri net with 115566 places and 83836 transitions 301810 arcs in 1154 ms.
[2025-06-07 09:10:33] [INFO ] Unfolded 11 HLPN properties in 31 ms.
Deduced a syphon composed of 98581 places in 260 ms
Reduce places removed 106837 places and 54136 transitions.
RANDOM walk for 10487 steps (1 resets) in 3102 ms. (3 steps per ms) remains 0/5 properties
FORMULA VehicularWifi-COL-none-ReachabilityCardinality-2025-14 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA VehicularWifi-COL-none-ReachabilityCardinality-2025-12 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA VehicularWifi-COL-none-ReachabilityCardinality-2025-11 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA VehicularWifi-COL-none-ReachabilityCardinality-2025-09 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA VehicularWifi-COL-none-ReachabilityCardinality-2025-01 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
[2025-06-07 09:10:36] [INFO ] Flatten gal took : 1189 ms
[2025-06-07 09:10:36] [INFO ] Flatten gal took : 659 ms
[2025-06-07 09:10:37] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1969368880532247420.gal : 139 ms
[2025-06-07 09:10:37] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality15700620648071018586.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality1969368880532247420.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality15700620648071018586.prop' '--nowitness' '--gen-order' 'FOLLOW'
ITS runner timed out or was interrupted.
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
ITS tools runner thread asked to quit. Dying gracefully.
All properties solved without resorting to model-checking.
Total runtime 7406 ms.
BK_STOP 1749287437162
--------------------
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
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202505121319.jar
+ VERSION=202505121319
+ echo 'Running Version 202505121319'
+ /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="VehicularWifi-COL-none"
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 2-5832"
echo " Executing tool itstools"
echo " Input is VehicularWifi-COL-none, 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 r240-tall-174915590700918"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/VehicularWifi-COL-none.tgz
mv VehicularWifi-COL-none 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.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 [ "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 ;