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.r117-tall-167814495200047.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)
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=====================================================================
Generated by BenchKit 2-5348
Executing tool lolaxred
Input is CloudReconfiguration-PT-310, examination is QuasiLiveness
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r117-tall-167814495200047
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 1.1M
-rw-r--r-- 1 mcc users 6.7K Feb 25 11:50 CTLCardinality.txt
-rw-r--r-- 1 mcc users 71K Feb 25 11:50 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.7K Feb 25 11:49 CTLFireability.txt
-rw-r--r-- 1 mcc users 48K Feb 25 11:49 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:40 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 4.0K Feb 25 15:47 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K Feb 25 15:47 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.4K Feb 25 15:47 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Feb 25 15:47 LTLFireability.xml
-rw-r--r-- 1 mcc users 9.8K Feb 25 11:50 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 95K Feb 25 11:50 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 7.4K Feb 25 11:50 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 59K Feb 25 11:50 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Feb 25 15:47 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Feb 25 15:47 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 equiv_col
-rw-r--r-- 1 mcc users 4 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 660K 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

FORMULA_NAME QuasiLiveness

=== Now, execution of the tool begins

BK_START 1679412226067

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=lolaxred
BK_EXAMINATION=QuasiLiveness
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=CloudReconfiguration-PT-310
Applying reductions before tool lola
Invoking reducer
Running Version 202303021504
[2023-03-21 15:23:47] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, QuasiLiveness, -timeout, 180, -rebuildPNML]
[2023-03-21 15:23:47] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-21 15:23:47] [INFO ] Load time of PNML (sax parser for PT used): 120 ms
[2023-03-21 15:23:47] [INFO ] Transformed 2585 places.
[2023-03-21 15:23:47] [INFO ] Transformed 3095 transitions.
[2023-03-21 15:23:47] [INFO ] Found NUPN structural information;
[2023-03-21 15:23:47] [INFO ] Parsed PT model containing 2585 places and 3095 transitions and 6463 arcs in 197 ms.
Starting structural reductions in LIVENESS mode, iteration 0 : 2585/2585 places, 3095/3095 transitions.
Graph (trivial) has 2957 edges and 2585 vertex of which 882 / 2585 are part of one of the 63 SCC in 12 ms
Free SCC test removed 819 places
Ensure Unique test removed 936 transitions
Reduce isomorphic transitions removed 936 transitions.
Drop transitions removed 1190 transitions
Trivial Post-agglo rules discarded 1190 transitions
Performed 1190 trivial Post agglomeration. Transition count delta: 1190
Iterating post reduction 0 with 1190 rules applied. Total rules applied 1191 place count 1766 transition count 969
Reduce places removed 1190 places and 0 transitions.
Ensure Unique test removed 68 transitions
Reduce isomorphic transitions removed 68 transitions.
Drop transitions removed 33 transitions
Trivial Post-agglo rules discarded 33 transitions
Performed 33 trivial Post agglomeration. Transition count delta: 33
Iterating post reduction 1 with 1291 rules applied. Total rules applied 2482 place count 576 transition count 868
Reduce places removed 33 places and 0 transitions.
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Iterating post reduction 2 with 36 rules applied. Total rules applied 2518 place count 543 transition count 865
Performed 20 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 20 Pre rules applied. Total rules applied 2518 place count 543 transition count 845
Deduced a syphon composed of 20 places in 5 ms
Reduce places removed 20 places and 0 transitions.
Iterating global reduction 3 with 40 rules applied. Total rules applied 2558 place count 523 transition count 845
Performed 292 Post agglomeration using F-continuation condition with reduction of 75 identical transitions.
Deduced a syphon composed of 292 places in 2 ms
Reduce places removed 292 places and 0 transitions.
Iterating global reduction 3 with 584 rules applied. Total rules applied 3142 place count 231 transition count 478
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Iterating post reduction 3 with 3 rules applied. Total rules applied 3145 place count 231 transition count 475
Performed 24 Post agglomeration using F-continuation condition.Transition count delta: -48
Deduced a syphon composed of 24 places in 1 ms
Reduce places removed 24 places and 0 transitions.
Iterating global reduction 4 with 48 rules applied. Total rules applied 3193 place count 207 transition count 523
Ensure Unique test removed 15 transitions
Reduce isomorphic transitions removed 15 transitions.
Iterating post reduction 4 with 15 rules applied. Total rules applied 3208 place count 207 transition count 508
Applied a total of 3208 rules in 114 ms. Remains 207 /2585 variables (removed 2378) and now considering 508/3095 (removed 2587) transitions.
[2023-03-21 15:23:48] [INFO ] Flow matrix only has 429 transitions (discarded 79 similar events)
// Phase 1: matrix 429 rows 207 cols
[2023-03-21 15:23:48] [INFO ] Computed 4 place invariants in 17 ms
[2023-03-21 15:23:48] [INFO ] Implicit Places using invariants in 302 ms returned []
[2023-03-21 15:23:48] [INFO ] Flow matrix only has 429 transitions (discarded 79 similar events)
[2023-03-21 15:23:48] [INFO ] Invariant cache hit.
[2023-03-21 15:23:48] [INFO ] State equation strengthened by 8 read => feed constraints.
[2023-03-21 15:23:48] [INFO ] Implicit Places using invariants and state equation in 313 ms returned [82, 141]
Discarding 2 places :
Implicit Place search using SMT with State Equation took 777 ms to find 2 implicit places.
Starting structural reductions in LIVENESS mode, iteration 1 : 205/2585 places, 508/3095 transitions.
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 8 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 0 with 4 rules applied. Total rules applied 4 place count 203 transition count 506
Applied a total of 4 rules in 19 ms. Remains 203 /205 variables (removed 2) and now considering 506/508 (removed 2) transitions.
[2023-03-21 15:23:48] [INFO ] Flow matrix only has 427 transitions (discarded 79 similar events)
// Phase 1: matrix 427 rows 203 cols
[2023-03-21 15:23:48] [INFO ] Computed 2 place invariants in 3 ms
[2023-03-21 15:23:48] [INFO ] Implicit Places using invariants in 118 ms returned []
[2023-03-21 15:23:48] [INFO ] Flow matrix only has 427 transitions (discarded 79 similar events)
[2023-03-21 15:23:48] [INFO ] Invariant cache hit.
[2023-03-21 15:23:48] [INFO ] State equation strengthened by 8 read => feed constraints.
[2023-03-21 15:23:49] [INFO ] Implicit Places using invariants and state equation in 238 ms returned []
Implicit Place search using SMT with State Equation took 361 ms to find 0 implicit places.
Starting structural reductions in LIVENESS mode, iteration 2 : 203/2585 places, 506/3095 transitions.
Finished structural reductions in LIVENESS mode , in 2 iterations and 1272 ms. Remains : 203/2585 places, 506/3095 transitions.
Discarding 310 transitions out of 506. Remains 196
Initial state reduction rules removed 1 formulas.
Incomplete random walk after 10000 steps, including 1315 resets, run finished after 586 ms. (steps per millisecond=17 ) properties (out of 195) seen :133
Incomplete Best-First random walk after 1001 steps, including 24 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 62) seen :0
Incomplete Best-First random walk after 1001 steps, including 27 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 62) seen :0
Incomplete Best-First random walk after 1000 steps, including 24 resets, run finished after 7 ms. (steps per millisecond=142 ) properties (out of 62) seen :1
Incomplete Best-First random walk after 1000 steps, including 25 resets, run finished after 11 ms. (steps per millisecond=90 ) properties (out of 61) seen :0
Incomplete Best-First random walk after 1001 steps, including 19 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 61) seen :0
Incomplete Best-First random walk after 1001 steps, including 25 resets, run finished after 8 ms. (steps per millisecond=125 ) properties (out of 61) seen :0
Incomplete Best-First random walk after 1001 steps, including 26 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 61) seen :0
Incomplete Best-First random walk after 1001 steps, including 20 resets, run finished after 20 ms. (steps per millisecond=50 ) properties (out of 61) seen :0
Incomplete Best-First random walk after 1001 steps, including 23 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 61) seen :0
Incomplete Best-First random walk after 1001 steps, including 23 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 61) seen :1
Incomplete Best-First random walk after 1001 steps, including 24 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 60) seen :2
Incomplete Best-First random walk after 1001 steps, including 30 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 58) seen :0
Incomplete Best-First random walk after 1001 steps, including 24 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 58) seen :0
Incomplete Best-First random walk after 1001 steps, including 24 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 58) seen :1
Incomplete Best-First random walk after 1001 steps, including 23 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 57) seen :3
Incomplete Best-First random walk after 1000 steps, including 21 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 54) seen :0
Incomplete Best-First random walk after 1001 steps, including 20 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 54) seen :1
Incomplete Best-First random walk after 1000 steps, including 24 resets, run finished after 7 ms. (steps per millisecond=142 ) properties (out of 53) seen :0
Incomplete Best-First random walk after 1001 steps, including 22 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 53) seen :0
Incomplete Best-First random walk after 1001 steps, including 23 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 53) seen :1
Incomplete Best-First random walk after 1001 steps, including 28 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 52) seen :1
Incomplete Best-First random walk after 1001 steps, including 16 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 24 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1000 steps, including 35 resets, run finished after 8 ms. (steps per millisecond=125 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 18 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 15 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 15 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 16 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 17 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 12 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 15 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 14 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 16 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 14 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 16 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 13 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1000 steps, including 13 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 15 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 15 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 19 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1000 steps, including 16 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 13 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 15 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 17 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 17 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 15 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 13 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1000 steps, including 16 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 14 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 17 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 17 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1000 steps, including 15 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 12 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1001 steps, including 16 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 51) seen :0
Incomplete Best-First random walk after 1000 steps, including 18 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 51) seen :0
Running SMT prover for 51 properties.
[2023-03-21 15:23:49] [INFO ] Flow matrix only has 427 transitions (discarded 79 similar events)
[2023-03-21 15:23:49] [INFO ] Invariant cache hit.
[2023-03-21 15:23:50] [INFO ] [Real]Absence check using 0 positive and 2 generalized place invariants in 1 ms returned sat
[2023-03-21 15:23:51] [INFO ] After 1249ms SMT Verify possible using state equation in real domain returned unsat :1 sat :9 real:41
[2023-03-21 15:23:51] [INFO ] State equation strengthened by 8 read => feed constraints.
[2023-03-21 15:23:51] [INFO ] After 133ms SMT Verify possible using 8 Read/Feed constraints in real domain returned unsat :1 sat :0 real:50
[2023-03-21 15:23:51] [INFO ] After 1820ms SMT Verify possible using all constraints in real domain returned unsat :1 sat :0 real:50
[2023-03-21 15:23:52] [INFO ] [Nat]Absence check using 0 positive and 2 generalized place invariants in 2 ms returned sat
[2023-03-21 15:23:53] [INFO ] After 1270ms SMT Verify possible using state equation in natural domain returned unsat :1 sat :50
[2023-03-21 15:23:54] [INFO ] After 1197ms SMT Verify possible using 8 Read/Feed constraints in natural domain returned unsat :1 sat :50
[2023-03-21 15:23:56] [INFO ] After 2904ms SMT Verify possible using trap constraints in natural domain returned unsat :1 sat :50
Attempting to minimize the solution found.
Minimization took 1219 ms.
[2023-03-21 15:23:57] [INFO ] After 5790ms SMT Verify possible using all constraints in natural domain returned unsat :1 sat :50
FORMULA QuasiLiveness FALSE TECHNIQUES RANDOM_WALK STRUCTURAL_REDUCTION BESTFIRST_WALK TOPOLOGICAL INITIAL_STATE SAT_SMT
Total runtime 10237 ms.
ITS solved all properties within timeout

BK_STOP 1679412238840

--------------------
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 QuasiLiveness -timeout 180 -rebuildPNML

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="CloudReconfiguration-PT-310"
export BK_EXAMINATION="QuasiLiveness"
export BK_TOOL="lolaxred"
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 2-5348"
echo " Executing tool lolaxred"
echo " Input is CloudReconfiguration-PT-310, examination is QuasiLiveness"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r117-tall-167814495200047"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/CloudReconfiguration-PT-310.tgz
mv CloudReconfiguration-PT-310 execution
cd execution
if [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "UpperBounds" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] || [ "QuasiLiveness" = "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 [ "QuasiLiveness" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "QuasiLiveness" != "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 "QuasiLiveness.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property QuasiLiveness.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "QuasiLiveness.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 '' QuasiLiveness.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] ; then
echo "FORMULA_NAME QuasiLiveness"
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 ;