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.r330-tall-167889202700038.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)
.......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
=====================================================================
Generated by BenchKit 2-5348
Executing tool marciexred
Input is RERS17pb113-PT-5, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r330-tall-167889202700038
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 15M
-rw-r--r-- 1 mcc users 7.5K Feb 26 18:17 CTLCardinality.txt
-rw-r--r-- 1 mcc users 81K Feb 26 18:17 CTLCardinality.xml
-rw-r--r-- 1 mcc users 8.2K Feb 26 18:15 CTLFireability.txt
-rw-r--r-- 1 mcc users 60K Feb 26 18:15 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:41 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.4K Jan 29 11:41 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.7K Feb 25 16:37 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K Feb 25 16:37 LTLCardinality.xml
-rw-r--r-- 1 mcc users 3.0K Feb 25 16:37 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Feb 25 16:37 LTLFireability.xml
-rw-r--r-- 1 mcc users 11K Feb 26 18:21 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 112K Feb 26 18:21 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 14K Feb 26 18:20 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 88K Feb 26 18:20 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Feb 25 16:37 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K Feb 25 16:37 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 equiv_col
-rw-r--r-- 1 mcc users 2 Mar 5 18:23 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 iscolored
-rw-r--r-- 1 mcc users 15M Mar 5 18:23 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 RERS17pb113-PT-5-ReachabilityCardinality-00
FORMULA_NAME RERS17pb113-PT-5-ReachabilityCardinality-01
FORMULA_NAME RERS17pb113-PT-5-ReachabilityCardinality-02
FORMULA_NAME RERS17pb113-PT-5-ReachabilityCardinality-03
FORMULA_NAME RERS17pb113-PT-5-ReachabilityCardinality-04
FORMULA_NAME RERS17pb113-PT-5-ReachabilityCardinality-05
FORMULA_NAME RERS17pb113-PT-5-ReachabilityCardinality-06
FORMULA_NAME RERS17pb113-PT-5-ReachabilityCardinality-07
FORMULA_NAME RERS17pb113-PT-5-ReachabilityCardinality-08
FORMULA_NAME RERS17pb113-PT-5-ReachabilityCardinality-09
FORMULA_NAME RERS17pb113-PT-5-ReachabilityCardinality-10
FORMULA_NAME RERS17pb113-PT-5-ReachabilityCardinality-11
FORMULA_NAME RERS17pb113-PT-5-ReachabilityCardinality-12
FORMULA_NAME RERS17pb113-PT-5-ReachabilityCardinality-13
FORMULA_NAME RERS17pb113-PT-5-ReachabilityCardinality-14
FORMULA_NAME RERS17pb113-PT-5-ReachabilityCardinality-15

=== Now, execution of the tool begins

BK_START 1679020233130

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=marciexred
BK_EXAMINATION=ReachabilityCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=RERS17pb113-PT-5
Applying reductions before tool marcie
Invoking reducer
Running Version 202303021504
[2023-03-17 02:30:34] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityCardinality, -timeout, 360, -rebuildPNML]
[2023-03-17 02:30:34] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-17 02:30:35] [INFO ] Load time of PNML (sax parser for PT used): 719 ms
[2023-03-17 02:30:35] [INFO ] Transformed 639 places.
[2023-03-17 02:30:35] [INFO ] Transformed 31353 transitions.
[2023-03-17 02:30:35] [INFO ] Parsed PT model containing 639 places and 31353 transitions and 125418 arcs in 907 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityCardinality.xml in 16 ms.
Working with output stream class java.io.PrintStream
Incomplete random walk after 10000 steps, including 2 resets, run finished after 663 ms. (steps per millisecond=15 ) properties (out of 16) seen :11
FORMULA RERS17pb113-PT-5-ReachabilityCardinality-14 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA RERS17pb113-PT-5-ReachabilityCardinality-13 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA RERS17pb113-PT-5-ReachabilityCardinality-11 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA RERS17pb113-PT-5-ReachabilityCardinality-10 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA RERS17pb113-PT-5-ReachabilityCardinality-09 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA RERS17pb113-PT-5-ReachabilityCardinality-07 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA RERS17pb113-PT-5-ReachabilityCardinality-06 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA RERS17pb113-PT-5-ReachabilityCardinality-05 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA RERS17pb113-PT-5-ReachabilityCardinality-03 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA RERS17pb113-PT-5-ReachabilityCardinality-02 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA RERS17pb113-PT-5-ReachabilityCardinality-01 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 10000 steps, including 2 resets, run finished after 73 ms. (steps per millisecond=136 ) properties (out of 5) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 45 ms. (steps per millisecond=222 ) properties (out of 5) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 100 ms. (steps per millisecond=100 ) properties (out of 5) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 50 ms. (steps per millisecond=200 ) properties (out of 5) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 66 ms. (steps per millisecond=151 ) properties (out of 5) seen :0
Running SMT prover for 5 properties.
[2023-03-17 02:30:36] [INFO ] Flow matrix only has 18326 transitions (discarded 13027 similar events)
// Phase 1: matrix 18326 rows 639 cols
[2023-03-17 02:30:37] [INFO ] Computed 25 place invariants in 105 ms
[2023-03-17 02:30:37] [INFO ] After 285ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:5
[2023-03-17 02:30:37] [INFO ] [Nat]Absence check using 13 positive place invariants in 7 ms returned sat
[2023-03-17 02:30:37] [INFO ] [Nat]Absence check using 13 positive and 12 generalized place invariants in 3 ms returned sat
[2023-03-17 02:30:54] [INFO ] After 16119ms SMT Verify possible using state equation in natural domain returned unsat :2 sat :3
[2023-03-17 02:30:54] [INFO ] State equation strengthened by 829 read => feed constraints.
[2023-03-17 02:31:02] [INFO ] After 8426ms SMT Verify possible using 829 Read/Feed constraints in natural domain returned unsat :2 sat :2
[2023-03-17 02:31:02] [INFO ] After 8429ms SMT Verify possible using trap constraints in natural domain returned unsat :2 sat :2
Attempting to minimize the solution found.
Minimization took 7 ms.
[2023-03-17 02:31:02] [INFO ] After 25040ms SMT Verify possible using all constraints in natural domain returned unsat :2 sat :2
FORMULA RERS17pb113-PT-5-ReachabilityCardinality-08 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA RERS17pb113-PT-5-ReachabilityCardinality-04 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Fused 5 Parikh solutions to 3 different solutions.
Parikh walk visited 0 properties in 38 ms.
Support contains 115 out of 639 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 639/639 places, 31353/31353 transitions.
Ensure Unique test removed 12 places
Iterating post reduction 0 with 12 rules applied. Total rules applied 12 place count 627 transition count 31353
Applied a total of 12 rules in 382 ms. Remains 627 /639 variables (removed 12) and now considering 31353/31353 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 389 ms. Remains : 627/639 places, 31353/31353 transitions.
Incomplete random walk after 10000 steps, including 2 resets, run finished after 572 ms. (steps per millisecond=17 ) properties (out of 3) seen :1
FORMULA RERS17pb113-PT-5-ReachabilityCardinality-00 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 35 ms. (steps per millisecond=285 ) properties (out of 2) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 46 ms. (steps per millisecond=217 ) properties (out of 2) seen :0
Running SMT prover for 2 properties.
[2023-03-17 02:31:03] [INFO ] Flow matrix only has 18326 transitions (discarded 13027 similar events)
// Phase 1: matrix 18326 rows 627 cols
[2023-03-17 02:31:04] [INFO ] Computed 13 place invariants in 108 ms
[2023-03-17 02:31:04] [INFO ] After 181ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:2
[2023-03-17 02:31:04] [INFO ] [Nat]Absence check using 13 positive place invariants in 8 ms returned sat
[2023-03-17 02:31:18] [INFO ] After 14235ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :2
[2023-03-17 02:31:18] [INFO ] State equation strengthened by 829 read => feed constraints.
[2023-03-17 02:31:29] [INFO ] After 10295ms SMT Verify possible using 829 Read/Feed constraints in natural domain returned unsat :0 sat :1
[2023-03-17 02:31:29] [INFO ] After 10297ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
Attempting to minimize the solution found.
Minimization took 9 ms.
[2023-03-17 02:31:29] [INFO ] After 25044ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
Parikh walk visited 0 properties in 15 ms.
Support contains 72 out of 627 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 627/627 places, 31353/31353 transitions.
Applied a total of 0 rules in 270 ms. Remains 627 /627 variables (removed 0) and now considering 31353/31353 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 271 ms. Remains : 627/627 places, 31353/31353 transitions.
Incomplete random walk after 10000 steps, including 2 resets, run finished after 404 ms. (steps per millisecond=24 ) properties (out of 2) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 56 ms. (steps per millisecond=178 ) properties (out of 2) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 65 ms. (steps per millisecond=153 ) properties (out of 2) seen :0
Interrupted probabilistic random walk after 22443 steps, run timeout after 3001 ms. (steps per millisecond=7 ) properties seen :{}
Probabilistic random walk after 22443 steps, saw 20273 distinct states, run finished after 3003 ms. (steps per millisecond=7 ) properties seen :0
Running SMT prover for 2 properties.
[2023-03-17 02:31:33] [INFO ] Flow matrix only has 18326 transitions (discarded 13027 similar events)
[2023-03-17 02:31:33] [INFO ] Invariant cache hit.
[2023-03-17 02:31:33] [INFO ] After 112ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:2
[2023-03-17 02:31:33] [INFO ] [Nat]Absence check using 13 positive place invariants in 6 ms returned sat
[2023-03-17 02:31:53] [INFO ] After 19568ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :2
[2023-03-17 02:31:53] [INFO ] State equation strengthened by 829 read => feed constraints.
[2023-03-17 02:31:58] [INFO ] After 5133ms SMT Verify possible using 829 Read/Feed constraints in natural domain returned unsat :0 sat :1
[2023-03-17 02:31:58] [INFO ] After 5133ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
Attempting to minimize the solution found.
Minimization took 8 ms.
[2023-03-17 02:31:58] [INFO ] After 25050ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
Parikh walk visited 0 properties in 1039 ms.
Support contains 72 out of 627 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 627/627 places, 31353/31353 transitions.
Applied a total of 0 rules in 168 ms. Remains 627 /627 variables (removed 0) and now considering 31353/31353 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 168 ms. Remains : 627/627 places, 31353/31353 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 627/627 places, 31353/31353 transitions.
Applied a total of 0 rules in 171 ms. Remains 627 /627 variables (removed 0) and now considering 31353/31353 (removed 0) transitions.
[2023-03-17 02:31:59] [INFO ] Flow matrix only has 18326 transitions (discarded 13027 similar events)
[2023-03-17 02:31:59] [INFO ] Invariant cache hit.
[2023-03-17 02:32:01] [INFO ] Implicit Places using invariants in 1712 ms returned []
Implicit Place search using SMT only with invariants took 1715 ms to find 0 implicit places.
[2023-03-17 02:32:01] [INFO ] Flow matrix only has 18326 transitions (discarded 13027 similar events)
[2023-03-17 02:32:01] [INFO ] Invariant cache hit.
[2023-03-17 02:32:10] [INFO ] Dead Transitions using invariants and state equation in 8548 ms found 0 transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 10439 ms. Remains : 627/627 places, 31353/31353 transitions.
Ensure Unique test removed 13027 transitions
Reduce isomorphic transitions removed 13027 transitions.
Iterating post reduction 0 with 13027 rules applied. Total rules applied 13027 place count 627 transition count 18326
Applied a total of 13027 rules in 620 ms. Remains 627 /627 variables (removed 0) and now considering 18326/31353 (removed 13027) transitions.
Running SMT prover for 2 properties.
// Phase 1: matrix 18326 rows 627 cols
[2023-03-17 02:32:10] [INFO ] Computed 13 place invariants in 50 ms
[2023-03-17 02:32:11] [INFO ] After 99ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:2
[2023-03-17 02:32:11] [INFO ] [Nat]Absence check using 13 positive place invariants in 7 ms returned sat
[2023-03-17 02:32:26] [INFO ] After 15746ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :2
[2023-03-17 02:32:28] [INFO ] After 16874ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :2
Attempting to minimize the solution found.
Minimization took 640 ms.
[2023-03-17 02:32:28] [INFO ] After 17636ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :2
[2023-03-17 02:32:28] [INFO ] Export to MCC of 2 properties in file /home/mcc/execution/ReachabilityCardinality.sr.xml took 3 ms.
[2023-03-17 02:32:28] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 627 places, 31353 transitions and 125406 arcs took 130 ms.
[2023-03-17 02:32:30] [INFO ] Flatten gal took : 1185 ms
Total runtime 115998 ms.
There are residual formulas that ITS could not solve within timeout
timeout --kill-after=10s --signal=SIGINT 1m for testing only

Marcie built on Linux at 2019-11-18.
A model checker for Generalized Stochastic Petri nets

authors: Alex Tovchigrechko (IDD package and CTL model checking)

Martin Schwarick (Symbolic numerical analysis and CSL model checking)

Christian Rohr (Simulative and approximative numerical model checking)

marcie@informatik.tu-cottbus.de

called as: /home/mcc/BenchKit/bin//../reducer/bin//../../marcie/bin/marcie --net-file=model.pnml --mcc-file=ReachabilityCardinality.xml --memory=6 --mcc-mode

parse successfull
net created successfully

Net: RERS17pb113_PT_5
(NrP: 627 NrTr: 31353 NrArc: 125406)

parse formulas
formulas created successfully
place and transition orderings generation:0m 3.765sec

net check time: 0m 0.023sec

init dd package: 0m 2.676sec

TIME LIMIT: Killed by timeout after 3600 seconds
MemTotal: 16393216 kB
MemFree: 10428488 kB
After kill :
MemTotal: 16393216 kB
MemFree: 16062956 kB

BK_TIME_CONFINEMENT_REACHED

--------------------
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 ReachabilityCardinality -timeout 360 -rebuildPNML
check for maximal unmarked siphon
ok
check for constant places
ok
check if there are places and transitions
ok
check if there are transitions without pre-places
ok
check if at least one transition is enabled in m0
ok
check if there are transitions that can never fire
ok


initing FirstDep: 0m 6.037sec

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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="RERS17pb113-PT-5"
export BK_EXAMINATION="ReachabilityCardinality"
export BK_TOOL="marciexred"
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 marciexred"
echo " Input is RERS17pb113-PT-5, 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 r330-tall-167889202700038"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/RERS17pb113-PT-5.tgz
mv RERS17pb113-PT-5 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 ;