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.r009-oct2-167813597700270.qcow2', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=4294967296 backing_file=/data/fkordon/mcc2023-input.qcow2 backing_fmt=qcow2 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 ltsminxred
Input is AirplaneLD-PT-0100, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r009-oct2-167813597700270
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 2.9M
-rw-r--r-- 1 mcc users 37K Feb 26 11:15 CTLCardinality.txt
-rw-r--r-- 1 mcc users 153K Feb 26 11:15 CTLCardinality.xml
-rw-r--r-- 1 mcc users 55K Feb 26 11:12 CTLFireability.txt
-rw-r--r-- 1 mcc users 325K Feb 26 11:12 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:40 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.5K Jan 29 11:40 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 39K Feb 25 15:30 LTLCardinality.txt
-rw-r--r-- 1 mcc users 110K Feb 25 15:30 LTLCardinality.xml
-rw-r--r-- 1 mcc users 17K Feb 25 15:30 LTLFireability.txt
-rw-r--r-- 1 mcc users 83K Feb 25 15:30 LTLFireability.xml
-rw-r--r-- 1 mcc users 200K Feb 26 11:27 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 806K Feb 26 11:27 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 89K Feb 26 11:22 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 542K Feb 26 11:22 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 6.1K Feb 25 15:30 UpperBounds.txt
-rw-r--r-- 1 mcc users 13K Feb 25 15:30 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 5 18:22 equiv_col
-rw-r--r-- 1 mcc users 5 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 433K 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 AirplaneLD-PT-0100-ReachabilityCardinality-00
FORMULA_NAME AirplaneLD-PT-0100-ReachabilityCardinality-01
FORMULA_NAME AirplaneLD-PT-0100-ReachabilityCardinality-02
FORMULA_NAME AirplaneLD-PT-0100-ReachabilityCardinality-03
FORMULA_NAME AirplaneLD-PT-0100-ReachabilityCardinality-04
FORMULA_NAME AirplaneLD-PT-0100-ReachabilityCardinality-05
FORMULA_NAME AirplaneLD-PT-0100-ReachabilityCardinality-06
FORMULA_NAME AirplaneLD-PT-0100-ReachabilityCardinality-07
FORMULA_NAME AirplaneLD-PT-0100-ReachabilityCardinality-08
FORMULA_NAME AirplaneLD-PT-0100-ReachabilityCardinality-09
FORMULA_NAME AirplaneLD-PT-0100-ReachabilityCardinality-10
FORMULA_NAME AirplaneLD-PT-0100-ReachabilityCardinality-11
FORMULA_NAME AirplaneLD-PT-0100-ReachabilityCardinality-12
FORMULA_NAME AirplaneLD-PT-0100-ReachabilityCardinality-13
FORMULA_NAME AirplaneLD-PT-0100-ReachabilityCardinality-14
FORMULA_NAME AirplaneLD-PT-0100-ReachabilityCardinality-15

=== Now, execution of the tool begins

BK_START 1678621136015

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=AirplaneLD-PT-0100
Applying reductions before tool ltsmin
Invoking reducer
Running Version 202303021504
[2023-03-12 11:38:58] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityCardinality, -timeout, 360, -rebuildPNML]
[2023-03-12 11:38:58] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-12 11:38:59] [INFO ] Load time of PNML (sax parser for PT used): 130 ms
[2023-03-12 11:38:59] [INFO ] Transformed 719 places.
[2023-03-12 11:38:59] [INFO ] Transformed 808 transitions.
[2023-03-12 11:38:59] [INFO ] Parsed PT model containing 719 places and 808 transitions and 3078 arcs in 256 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityCardinality.xml in 85 ms.
Working with output stream class java.io.PrintStream
Reduce places removed 302 places and 0 transitions.
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-00 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-08 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-09 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-10 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-11 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-12 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-14 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Incomplete random walk after 10000 steps, including 1262 resets, run finished after 554 ms. (steps per millisecond=18 ) properties (out of 9) seen :1
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-01 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 10001 steps, including 8 resets, run finished after 52 ms. (steps per millisecond=192 ) properties (out of 8) seen :0
Incomplete Best-First random walk after 10001 steps, including 8 resets, run finished after 8 ms. (steps per millisecond=1250 ) properties (out of 8) seen :0
Incomplete Best-First random walk after 10001 steps, including 12 resets, run finished after 243 ms. (steps per millisecond=41 ) properties (out of 8) seen :0
Incomplete Best-First random walk after 10001 steps, including 13 resets, run finished after 9 ms. (steps per millisecond=1111 ) properties (out of 8) seen :0
Incomplete Best-First random walk after 10001 steps, including 8 resets, run finished after 143 ms. (steps per millisecond=69 ) properties (out of 8) seen :0
Incomplete Best-First random walk after 10001 steps, including 11 resets, run finished after 22 ms. (steps per millisecond=454 ) properties (out of 8) seen :0
Incomplete Best-First random walk after 10001 steps, including 13 resets, run finished after 6 ms. (steps per millisecond=1666 ) properties (out of 8) seen :0
Incomplete Best-First random walk after 10001 steps, including 12 resets, run finished after 12 ms. (steps per millisecond=833 ) properties (out of 8) seen :0
Running SMT prover for 8 properties.
// Phase 1: matrix 808 rows 417 cols
[2023-03-12 11:39:00] [INFO ] Computed 3 place invariants in 61 ms
[2023-03-12 11:39:01] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-03-12 11:39:01] [INFO ] [Real]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2023-03-12 11:39:01] [INFO ] After 750ms SMT Verify possible using all constraints in real domain returned unsat :1 sat :0 real:7
[2023-03-12 11:39:02] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-03-12 11:39:02] [INFO ] [Nat]Absence check using 2 positive and 1 generalized place invariants in 1 ms returned sat
[2023-03-12 11:39:04] [INFO ] After 2390ms SMT Verify possible using all constraints in natural domain returned unsat :8 sat :0
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-15 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-13 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-07 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-06 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-05 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-04 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-03 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-02 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Fused 8 Parikh solutions to 0 different solutions.
Parikh walk visited 0 properties in 2 ms.
All properties solved without resorting to model-checking.
Total runtime 5386 ms.
pnml2lts-sym model.pnml --lace-workers=4 --vset=lddmc --saturation=sat -rbs,w2W,ru,hf --sylvan-sizes=20,28,20,28 --invariant=/tmp/475/inv_0_ --invariant=/tmp/475/inv_1_ --invariant=/tmp/475/inv_2_ --invariant=/tmp/475/inv_3_ --invariant=/tmp/475/inv_4_ --invariant=/tmp/475/inv_5_ --invariant=/tmp/475/inv_6_ --invariant=/tmp/475/inv_7_ --invariant=/tmp/475/inv_8_ --invariant=/tmp/475/inv_9_ --invariant=/tmp/475/inv_10_ --invariant=/tmp/475/inv_11_ --invariant=/tmp/475/inv_12_ --invariant=/tmp/475/inv_13_ --invariant=/tmp/475/inv_14_ --invariant=/tmp/475/inv_15_ --inv-par
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-00 FALSE TECHNIQUES DECISION_DIAGRAMS PARALLEL_PROCESSING USE_NUPN
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-01 FALSE TECHNIQUES DECISION_DIAGRAMS PARALLEL_PROCESSING USE_NUPN
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-02 FALSE TECHNIQUES DECISION_DIAGRAMS PARALLEL_PROCESSING USE_NUPN
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-03 FALSE TECHNIQUES DECISION_DIAGRAMS PARALLEL_PROCESSING USE_NUPN
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-04 FALSE TECHNIQUES DECISION_DIAGRAMS PARALLEL_PROCESSING USE_NUPN
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-05 TRUE TECHNIQUES DECISION_DIAGRAMS PARALLEL_PROCESSING USE_NUPN
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-06 TRUE TECHNIQUES DECISION_DIAGRAMS PARALLEL_PROCESSING USE_NUPN
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-07 TRUE TECHNIQUES DECISION_DIAGRAMS PARALLEL_PROCESSING USE_NUPN
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-08 TRUE TECHNIQUES DECISION_DIAGRAMS PARALLEL_PROCESSING USE_NUPN
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-09 FALSE TECHNIQUES DECISION_DIAGRAMS PARALLEL_PROCESSING USE_NUPN
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-10 TRUE TECHNIQUES DECISION_DIAGRAMS PARALLEL_PROCESSING USE_NUPN
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-11 FALSE TECHNIQUES DECISION_DIAGRAMS PARALLEL_PROCESSING USE_NUPN
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-12 TRUE TECHNIQUES DECISION_DIAGRAMS PARALLEL_PROCESSING USE_NUPN
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-13 FALSE TECHNIQUES DECISION_DIAGRAMS PARALLEL_PROCESSING USE_NUPN
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-14 FALSE TECHNIQUES DECISION_DIAGRAMS PARALLEL_PROCESSING USE_NUPN
FORMULA AirplaneLD-PT-0100-ReachabilityCardinality-15 TRUE TECHNIQUES DECISION_DIAGRAMS PARALLEL_PROCESSING USE_NUPN

BK_STOP 1678621147228

--------------------
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:
++ perl -pe 's/.*\.//g'
++ sed s/.jar//
++ 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 AirplaneLD-PT-0100-ReachabilityCardinality-00
rfs formula type EF
rfs formula formula --invariant=/tmp/475/inv_0_
rfs formula name AirplaneLD-PT-0100-ReachabilityCardinality-01
rfs formula type AG
rfs formula formula --invariant=/tmp/475/inv_1_
rfs formula name AirplaneLD-PT-0100-ReachabilityCardinality-02
rfs formula type EF
rfs formula formula --invariant=/tmp/475/inv_2_
rfs formula name AirplaneLD-PT-0100-ReachabilityCardinality-03
rfs formula type EF
rfs formula formula --invariant=/tmp/475/inv_3_
rfs formula name AirplaneLD-PT-0100-ReachabilityCardinality-04
rfs formula type EF
rfs formula formula --invariant=/tmp/475/inv_4_
rfs formula name AirplaneLD-PT-0100-ReachabilityCardinality-05
rfs formula type AG
rfs formula formula --invariant=/tmp/475/inv_5_
rfs formula name AirplaneLD-PT-0100-ReachabilityCardinality-06
rfs formula type AG
rfs formula formula --invariant=/tmp/475/inv_6_
rfs formula name AirplaneLD-PT-0100-ReachabilityCardinality-07
rfs formula type AG
rfs formula formula --invariant=/tmp/475/inv_7_
rfs formula name AirplaneLD-PT-0100-ReachabilityCardinality-08
rfs formula type AG
rfs formula formula --invariant=/tmp/475/inv_8_
rfs formula name AirplaneLD-PT-0100-ReachabilityCardinality-09
rfs formula type EF
rfs formula formula --invariant=/tmp/475/inv_9_
rfs formula name AirplaneLD-PT-0100-ReachabilityCardinality-10
rfs formula type AG
rfs formula formula --invariant=/tmp/475/inv_10_
rfs formula name AirplaneLD-PT-0100-ReachabilityCardinality-11
rfs formula type EF
rfs formula formula --invariant=/tmp/475/inv_11_
rfs formula name AirplaneLD-PT-0100-ReachabilityCardinality-12
rfs formula type AG
rfs formula formula --invariant=/tmp/475/inv_12_
rfs formula name AirplaneLD-PT-0100-ReachabilityCardinality-13
rfs formula type EF
rfs formula formula --invariant=/tmp/475/inv_13_
rfs formula name AirplaneLD-PT-0100-ReachabilityCardinality-14
rfs formula type EF
rfs formula formula --invariant=/tmp/475/inv_14_
rfs formula name AirplaneLD-PT-0100-ReachabilityCardinality-15
rfs formula type AG
rfs formula formula --invariant=/tmp/475/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: Petri net has 719 places, 808 transitions and 3078 arcs
pnml2lts-sym: Petri net AirplaneLD-PT-0100 analyzed
pnml2lts-sym: There are safe places
pnml2lts-sym: Loading Petri net took 0.010 real 0.010 user 0.010 sys
pnml2lts-sym: Initializing regrouping layer
pnml2lts-sym: Regroup specification: bs,w2W,ru,hf
pnml2lts-sym: Regroup Boost's Sloan
pnml2lts-sym: Regroup over-approximate must-write to may-write
pnml2lts-sym: Regroup Row sUbsume
pnml2lts-sym: Reqroup Horizontal Flip
pnml2lts-sym: Regrouping: 808->808 groups
pnml2lts-sym: Regrouping took 0.410 real 0.410 user 0.000 sys
pnml2lts-sym: state vector length is 719; there are 808 groups
pnml2lts-sym: Creating a multi-core ListDD domain.
pnml2lts-sym: Sylvan allocates 15.000 GB virtual memory for nodes table and operation cache.
pnml2lts-sym: Initial nodes table and operation cache requires 60.00 MB.
pnml2lts-sym: Using GBgetTransitionsShortR2W as next-state function
pnml2lts-sym: got initial state
pnml2lts-sym:
pnml2lts-sym: Invariant violation (/tmp/475/inv_1_) found at depth -1!
pnml2lts-sym:
pnml2lts-sym: Exploration took 17054 group checks and 0 next state calls
pnml2lts-sym: reachability took 1.040 real 4.100 user 0.010 sys
pnml2lts-sym: counting visited states...
pnml2lts-sym: counting took 0.000 real 0.010 user 0.000 sys
pnml2lts-sym: state space has 34877423 states, 9416 nodes
pnml2lts-sym: group_next: 5098 nodes total
pnml2lts-sym: group_explored: 2828 nodes, 2422 short vectors total
pnml2lts-sym: max token count: 1

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="AirplaneLD-PT-0100"
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 AirplaneLD-PT-0100, 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 r009-oct2-167813597700270"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/AirplaneLD-PT-0100.tgz
mv AirplaneLD-PT-0100 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 ;