Execution Chart

We display below the execution chart for this examination (boot time has been removed).

Trace from the execution

Formatting '/data/fkordon/mcc2026-input.r146-tall-177961074200511.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2026-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 2-5973
Executing tool itstools
Input is GPUForwardProgress-PT-36a, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r146-tall-177961074200511
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 556K
-rw-r--r-- 1 mcc users 6.9K Mar 7 11:58 CTLCardinality.txt
-rw-r--r-- 1 mcc users 75K Mar 7 11:58 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.9K Mar 7 11:55 CTLFireability.txt
-rw-r--r-- 1 mcc users 56K Mar 7 11:55 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.9K Mar 15 10:39 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K Mar 15 10:39 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.4K Mar 15 10:39 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K Mar 15 10:39 LTLFireability.xml
-rw-r--r-- 1 mcc users 16K Mar 7 11:58 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 175K Mar 7 11:58 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 8.6K Mar 7 11:58 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 72K Mar 7 11:58 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Mar 15 10:39 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Mar 15 10:39 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 4 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 56K Mar 3 18:30 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 GPUForwardProgress-PT-36a-ReachabilityFireability-2024-00
FORMULA_NAME GPUForwardProgress-PT-36a-ReachabilityFireability-2024-01
FORMULA_NAME GPUForwardProgress-PT-36a-ReachabilityFireability-2024-02
FORMULA_NAME GPUForwardProgress-PT-36a-ReachabilityFireability-2024-03
FORMULA_NAME GPUForwardProgress-PT-36a-ReachabilityFireability-2024-04
FORMULA_NAME GPUForwardProgress-PT-36a-ReachabilityFireability-2024-05
FORMULA_NAME GPUForwardProgress-PT-36a-ReachabilityFireability-2024-06
FORMULA_NAME GPUForwardProgress-PT-36a-ReachabilityFireability-2024-07
FORMULA_NAME GPUForwardProgress-PT-36a-ReachabilityFireability-2024-08
FORMULA_NAME GPUForwardProgress-PT-36a-ReachabilityFireability-2024-09
FORMULA_NAME GPUForwardProgress-PT-36a-ReachabilityFireability-2024-10
FORMULA_NAME GPUForwardProgress-PT-36a-ReachabilityFireability-2024-11
FORMULA_NAME GPUForwardProgress-PT-36a-ReachabilityFireability-2024-12
FORMULA_NAME GPUForwardProgress-PT-36a-ReachabilityFireability-2024-13
FORMULA_NAME GPUForwardProgress-PT-36a-ReachabilityFireability-2024-14
FORMULA_NAME GPUForwardProgress-PT-36a-ReachabilityFireability-2024-15

=== Now, execution of the tool begins

BK_START 1779733149831

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=ReachabilityFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=GPUForwardProgress-PT-36a
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
ReachabilityFireability PT
Running Version 202604301425
[2026-05-25 18:19:10] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityFireability, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2026-05-25 18:19:11] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-25 18:19:11] [INFO ] Load time of PNML (sax parser for PT used): 69 ms
[2026-05-25 18:19:11] [INFO ] Transformed 152 places.
[2026-05-25 18:19:11] [INFO ] Transformed 189 transitions.
[2026-05-25 18:19:11] [INFO ] Found NUPN structural information;
[2026-05-25 18:19:11] [INFO ] Parsed PT model containing 152 places and 189 transitions and 741 arcs in 168 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 12 ms.
Working with output stream class java.io.PrintStream
Initial state reduction rules removed 3 formulas.
Ensure Unique test removed 38 transitions
Reduce redundant transitions removed 38 transitions.
FORMULA GPUForwardProgress-PT-36a-ReachabilityFireability-2024-12 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA GPUForwardProgress-PT-36a-ReachabilityFireability-2024-13 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA GPUForwardProgress-PT-36a-ReachabilityFireability-2024-14 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2026-05-25 18:19:11] [INFO ] Flatten gal took : 113 ms
[2026-05-25 18:19:11] [INFO ] Flatten gal took : 40 ms
[2026-05-25 18:19:11] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality17155622748508304364.gal : 28 ms
[2026-05-25 18:19:11] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality8638137313657756347.prop : 12 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality17155622748508304364.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality8638137313657756347.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
Loading property file /tmp/ReachabilityCardinality8638137313657756347.prop.
SDD proceeding with computation,13 properties remain. new max is 4
SDD size :38 after 40
SDD proceeding with computation,13 properties remain. new max is 8
SDD size :40 after 45
SDD proceeding with computation,13 properties remain. new max is 16
SDD size :45 after 54
SDD proceeding with computation,13 properties remain. new max is 32
SDD size :54 after 71
SDD proceeding with computation,13 properties remain. new max is 64
SDD size :71 after 75
RANDOM walk for 40000 steps (75 resets) in 2784 ms. (14 steps per ms) remains 10/13 properties
FORMULA GPUForwardProgress-PT-36a-ReachabilityFireability-2024-11 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA GPUForwardProgress-PT-36a-ReachabilityFireability-2024-04 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA GPUForwardProgress-PT-36a-ReachabilityFireability-2024-01 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
SDD proceeding with computation,13 properties remain. new max is 128
SDD size :2219 after 2885
BEST_FIRST walk for 40003 steps (8 resets) in 795 ms. (50 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 533 ms. (74 steps per ms) remains 9/10 properties
FORMULA GPUForwardProgress-PT-36a-ReachabilityFireability-2024-02 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 40003 steps (8 resets) in 146 ms. (272 steps per ms) remains 9/9 properties
Reachability property GPUForwardProgress-PT-36a-ReachabilityFireability-2024-11 is true.
BEST_FIRST walk for 40004 steps (8 resets) in 107 ms. (370 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (10 resets) in 220 ms. (181 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (8 resets) in 224 ms. (177 steps per ms) remains 8/9 properties
FORMULA GPUForwardProgress-PT-36a-ReachabilityFireability-2024-07 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 40004 steps (8 resets) in 150 ms. (264 steps per ms) remains 8/8 properties
BEST_FIRST walk for 40004 steps (8 resets) in 111 ms. (357 steps per ms) remains 8/8 properties
BEST_FIRST walk for 40004 steps (8 resets) in 278 ms. (143 steps per ms) remains 7/8 properties
FORMULA GPUForwardProgress-PT-36a-ReachabilityFireability-2024-10 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 40004 steps (12 resets) in 194 ms. (205 steps per ms) remains 6/7 properties
FORMULA GPUForwardProgress-PT-36a-ReachabilityFireability-2024-15 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-10350299945782654534.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-9849501427945335999.kers'
[2026-05-25 18:19:12] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-10350299945782654534.kers, --Pflows, --basisKERS=/tmp/petrispot-output-9849501427945335999.kers]
Normalized transition count is 150 out of 151 initially.
Culling duplicate invariants (modulo rational): removing 1 columns.
Culled 1 columns in 0 ms.
// Phase 1: matrix 150 rows 151 cols 589 entries
Finished phase 1 with 113 SingleSign rule and 1 generalized
[2026-05-25 18:19:12] [INFO ] Computed 38 invariants in 0 ms
Computed 38 P flows in 1 ms.
Exported basis to /tmp/petrispot-output-9849501427945335999.kers
Total runtime 1 ms.
[2026-05-25 18:19:12] [INFO ] State equation strengthened by 37 read => feed constraints.
Excessive predecessor constraint size, skipping predecessor.
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/96 variables, 96/96 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/96 variables, 1/97 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/96 variables, 0/97 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 3 (OVERLAPS) 55/151 variables, 37/134 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/151 variables, 55/189 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/151 variables, 0/189 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 6 (OVERLAPS) 150/301 variables, 151/340 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/301 variables, 36/376 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/301 variables, 0/376 constraints. Problems are: Problem set: 0 solved, 6 unsolved
Problem GPUForwardProgress-PT-36a-ReachabilityFireability-2024-00 is UNSAT
FORMULA GPUForwardProgress-PT-36a-ReachabilityFireability-2024-00 FALSE TECHNIQUES SMT_REFINEMENT
At refinement iteration 9 (OVERLAPS) 1/302 variables, 1/377 constraints. Problems are: Problem set: 1 solved, 5 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/302 variables, 1/378 constraints. Problems are: Problem set: 1 solved, 5 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/302 variables, 0/378 constraints. Problems are: Problem set: 1 solved, 5 unsolved
At refinement iteration 12 (OVERLAPS) 1/303 variables, 1/379 constraints. Problems are: Problem set: 1 solved, 5 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/303 variables, 0/379 constraints. Problems are: Problem set: 1 solved, 5 unsolved
At refinement iteration 14 (OVERLAPS) 0/303 variables, 0/379 constraints. Problems are: Problem set: 1 solved, 5 unsolved
No progress, stopping.
After SMT solving in domain Real declared 303/303 variables, and 379 constraints, problems are : Problem set: 1 solved, 5 unsolved in 679 ms.
Refiners :[Domain max(s): 152/152 constraints, Generalized P Invariants (flows): 38/38 constraints, State Equation: 152/152 constraints, ReadFeed: 37/37 constraints, PredecessorRefiner: 6/4 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 1 solved, 5 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/81 variables, 81/81 constraints. Problems are: Problem set: 1 solved, 5 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/81 variables, 1/82 constraints. Problems are: Problem set: 1 solved, 5 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/81 variables, 0/82 constraints. Problems are: Problem set: 1 solved, 5 unsolved
At refinement iteration 3 (OVERLAPS) 70/151 variables, 37/119 constraints. Problems are: Problem set: 1 solved, 5 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/151 variables, 70/189 constraints. Problems are: Problem set: 1 solved, 5 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/151 variables, 0/189 constraints. Problems are: Problem set: 1 solved, 5 unsolved
At refinement iteration 6 (OVERLAPS) 150/301 variables, 151/340 constraints. Problems are: Problem set: 1 solved, 5 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/301 variables, 36/376 constraints. Problems are: Problem set: 1 solved, 5 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/301 variables, 4/380 constraints. Problems are: Problem set: 1 solved, 5 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/301 variables, 0/380 constraints. Problems are: Problem set: 1 solved, 5 unsolved
Reachability property GPUForwardProgress-PT-36a-ReachabilityFireability-2024-04 is true.
Problem GPUForwardProgress-PT-36a-ReachabilityFireability-2024-06 is UNSAT
FORMULA GPUForwardProgress-PT-36a-ReachabilityFireability-2024-06 TRUE TECHNIQUES SMT_REFINEMENT
At refinement iteration 10 (OVERLAPS) 1/302 variables, 1/381 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/302 variables, 1/382 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/302 variables, 0/382 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 13 (OVERLAPS) 1/303 variables, 1/383 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/303 variables, 0/383 constraints. Problems are: Problem set: 2 solved, 4 unsolved
Reachability property GPUForwardProgress-PT-36a-ReachabilityFireability-2024-01 is true.
SDD proceeding with computation,10 properties remain. new max is 128
SDD size :64241 after 74566
At refinement iteration 15 (OVERLAPS) 0/303 variables, 0/383 constraints. Problems are: Problem set: 2 solved, 4 unsolved
No progress, stopping.
After SMT solving in domain Int declared 303/303 variables, and 383 constraints, problems are : Problem set: 2 solved, 4 unsolved in 1914 ms.
Refiners :[Domain max(s): 152/152 constraints, Generalized P Invariants (flows): 38/38 constraints, State Equation: 152/152 constraints, ReadFeed: 37/37 constraints, PredecessorRefiner: 5/4 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 2708ms problems are : Problem set: 2 solved, 4 unsolved
FORMULA GPUForwardProgress-PT-36a-ReachabilityFireability-2024-08 TRUE TECHNIQUES PARIKH_WALK
FORMULA GPUForwardProgress-PT-36a-ReachabilityFireability-2024-03 TRUE TECHNIQUES PARIKH_WALK
Finished Parikh walk after 10094 steps, including 95 resets, run visited all 2 properties in 49 ms. (steps per millisecond=206 )
FORMULA GPUForwardProgress-PT-36a-ReachabilityFireability-2024-09 FALSE TECHNIQUES PARIKH_WALK
FORMULA GPUForwardProgress-PT-36a-ReachabilityFireability-2024-05 TRUE TECHNIQUES PARIKH_WALK
Finished Parikh walk after 0 steps, including 0 resets, run visited all 0 properties in 1 ms. (steps per millisecond=0 )
Finished Parikh walk after 0 steps, including 0 resets, run visited all 0 properties in 1 ms. (steps per millisecond=0 )
Parikh walk visited 4 properties in 180 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
All properties solved without resorting to model-checking.
Total runtime 4822 ms.

BK_STOP 1779733155865

--------------------
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
+ [[ ReachabilityFireability = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution ReachabilityFireability -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_1.0.0.202604301425.jar
+ VERSION=202604301425
+ echo 'Running Version 202604301425'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination ReachabilityFireability -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="GPUForwardProgress-PT-36a"
export BK_EXAMINATION="ReachabilityFireability"
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 2-5973"
echo " Executing tool itstools"
echo " Input is GPUForwardProgress-PT-36a, examination is ReachabilityFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r146-tall-177961074200511"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/GPUForwardProgress-PT-36a.tgz
mv GPUForwardProgress-PT-36a execution
cd execution
if [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "UpperBounds" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] || [ "ReachabilityFireability" = "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 [ "ReachabilityFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityFireability" != "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 "ReachabilityFireability.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 '' ReachabilityFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME ReachabilityFireability"
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 ;