Execution Chart

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

Trace from the execution

Formatting '/mnt/tpsp/fkordon/mcc2020-input.r178-tajo-158987882400452.qcow2', fmt=qcow2 size=4294967296 backing_file='/mnt/tpsp/fkordon/mcc2020-input.qcow2' encryption=off cluster_size=65536 lazy_refcounts=off
Waiting for the VM to be ready (probing ssh)
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=====================================================================
Generated by BenchKit 2-4028
Executing tool itslola
Input is Diffusion2D-PT-D10N200, examination is CTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r178-tajo-158987882400452
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 448K
-rw-r--r-- 1 mcc users 3.6K Mar 31 06:32 CTLCardinality.txt
-rw-r--r-- 1 mcc users 18K Mar 31 06:32 CTLCardinality.xml
-rw-r--r-- 1 mcc users 3.1K Mar 29 22:53 CTLFireability.txt
-rw-r--r-- 1 mcc users 18K Mar 29 22:53 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K Mar 24 05:37 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 5.8K Mar 24 05:37 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.9K Apr 8 14:48 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K Apr 28 14:00 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K Apr 8 14:48 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Apr 28 14:00 LTLFireability.xml
-rw-r--r-- 1 mcc users 4.7K Mar 28 14:31 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 23K Mar 28 14:31 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 3.2K Mar 27 07:31 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 17K Mar 27 07:31 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Mar 28 14:50 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Mar 28 14:50 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 24 05:37 equiv_col
-rw-r--r-- 1 mcc users 8 Mar 24 05:37 instance
-rw-r--r-- 1 mcc users 6 Mar 24 05:37 iscolored
-rw-r--r-- 1 mcc users 255K Mar 24 05:37 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 Diffusion2D-PT-D10N200-CTLFireability-00
FORMULA_NAME Diffusion2D-PT-D10N200-CTLFireability-01
FORMULA_NAME Diffusion2D-PT-D10N200-CTLFireability-02
FORMULA_NAME Diffusion2D-PT-D10N200-CTLFireability-03
FORMULA_NAME Diffusion2D-PT-D10N200-CTLFireability-04
FORMULA_NAME Diffusion2D-PT-D10N200-CTLFireability-05
FORMULA_NAME Diffusion2D-PT-D10N200-CTLFireability-06
FORMULA_NAME Diffusion2D-PT-D10N200-CTLFireability-07
FORMULA_NAME Diffusion2D-PT-D10N200-CTLFireability-08
FORMULA_NAME Diffusion2D-PT-D10N200-CTLFireability-09
FORMULA_NAME Diffusion2D-PT-D10N200-CTLFireability-10
FORMULA_NAME Diffusion2D-PT-D10N200-CTLFireability-11
FORMULA_NAME Diffusion2D-PT-D10N200-CTLFireability-12
FORMULA_NAME Diffusion2D-PT-D10N200-CTLFireability-13
FORMULA_NAME Diffusion2D-PT-D10N200-CTLFireability-14
FORMULA_NAME Diffusion2D-PT-D10N200-CTLFireability-15

=== Now, execution of the tool begins

BK_START 1591221319908

bash -c /home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n "BK_STOP " ; date -u +%s%3N
[2020-06-03 21:55:21] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, CTLFireability, -z3path, /home/mcc/BenchKit//z3/bin/z3, -yices2path, /home/mcc/BenchKit//yices/bin/yices, -timeout, 3600, -rebuildPNML]
[2020-06-03 21:55:21] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2020-06-03 21:55:21] [INFO ] Load time of PNML (sax parser for PT used): 62 ms
[2020-06-03 21:55:21] [INFO ] Transformed 100 places.
[2020-06-03 21:55:21] [INFO ] Transformed 684 transitions.
[2020-06-03 21:55:21] [INFO ] Parsed PT model containing 100 places and 684 transitions in 97 ms.
Parsed 16 properties from file /home/mcc/execution/CTLFireability.xml in 14 ms.
Incomplete random walk after 100094 steps, including 0 resets, run finished after 32 ms. (steps per millisecond=3127 ) properties seen :[1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 0, 1, 1, 1, 1, 0]
// Phase 1: matrix 684 rows 100 cols
[2020-06-03 21:55:21] [INFO ] Computed 1 place invariants in 10 ms
[2020-06-03 21:55:21] [INFO ] [Real]Absence check using 1 positive place invariants in 12 ms returned sat
[2020-06-03 21:55:21] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-06-03 21:55:22] [INFO ] [Real]Absence check using state equation in 207 ms returned sat
[2020-06-03 21:55:22] [INFO ] Computed and/alt/rep : 676/4868/676 causal constraints in 43 ms.
[2020-06-03 21:55:22] [INFO ] Solution in real domain found non-integer solution.
[2020-06-03 21:55:22] [INFO ] [Nat]Absence check using 1 positive place invariants in 12 ms returned sat
[2020-06-03 21:55:22] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-06-03 21:55:22] [INFO ] [Nat]Absence check using state equation in 163 ms returned sat
[2020-06-03 21:55:22] [INFO ] Computed and/alt/rep : 676/4868/676 causal constraints in 47 ms.
[2020-06-03 21:55:37] [INFO ] Added : 668 causal constraints over 134 iterations in 14680 ms. Result :sat
[2020-06-03 21:55:37] [INFO ] [Real]Absence check using 1 positive place invariants in 5 ms returned sat
[2020-06-03 21:55:37] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-06-03 21:55:37] [INFO ] [Real]Absence check using state equation in 192 ms returned sat
[2020-06-03 21:55:37] [INFO ] Computed and/alt/rep : 676/4868/676 causal constraints in 52 ms.
[2020-06-03 21:55:37] [INFO ] Solution in real domain found non-integer solution.
[2020-06-03 21:55:37] [INFO ] [Nat]Absence check using 1 positive place invariants in 6 ms returned sat
[2020-06-03 21:55:37] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-06-03 21:55:37] [INFO ] [Nat]Absence check using state equation in 156 ms returned sat
[2020-06-03 21:55:37] [INFO ] Computed and/alt/rep : 676/4868/676 causal constraints in 71 ms.
[2020-06-03 21:55:54] [INFO ] Added : 668 causal constraints over 134 iterations in 16294 ms. Result :sat
[2020-06-03 21:55:54] [INFO ] [Real]Absence check using 1 positive place invariants in 6 ms returned sat
[2020-06-03 21:55:54] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-06-03 21:55:54] [INFO ] [Real]Absence check using state equation in 205 ms returned sat
[2020-06-03 21:55:54] [INFO ] Computed and/alt/rep : 676/4868/676 causal constraints in 45 ms.
[2020-06-03 21:55:54] [INFO ] Solution in real domain found non-integer solution.
[2020-06-03 21:55:54] [INFO ] [Nat]Absence check using 1 positive place invariants in 8 ms returned sat
[2020-06-03 21:55:54] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-06-03 21:55:54] [INFO ] [Nat]Absence check using state equation in 132 ms returned sat
[2020-06-03 21:55:54] [INFO ] Computed and/alt/rep : 676/4868/676 causal constraints in 59 ms.
[2020-06-03 21:56:09] [INFO ] Added : 668 causal constraints over 134 iterations in 14756 ms. Result :sat
[2020-06-03 21:56:09] [INFO ] [Real]Absence check using 1 positive place invariants in 5 ms returned sat
[2020-06-03 21:56:09] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-06-03 21:56:09] [INFO ] [Real]Absence check using state equation in 181 ms returned sat
[2020-06-03 21:56:09] [INFO ] Computed and/alt/rep : 676/4868/676 causal constraints in 52 ms.
[2020-06-03 21:56:09] [INFO ] Solution in real domain found non-integer solution.
[2020-06-03 21:56:09] [INFO ] [Nat]Absence check using 1 positive place invariants in 8 ms returned sat
[2020-06-03 21:56:09] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-06-03 21:56:10] [INFO ] [Nat]Absence check using state equation in 151 ms returned sat
[2020-06-03 21:56:10] [INFO ] Computed and/alt/rep : 676/4868/676 causal constraints in 44 ms.
[2020-06-03 21:56:25] [INFO ] Added : 668 causal constraints over 134 iterations in 15098 ms. Result :sat
[2020-06-03 21:56:25] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2020-06-03 21:56:25] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-06-03 21:56:25] [INFO ] [Real]Absence check using state equation in 144 ms returned sat
[2020-06-03 21:56:25] [INFO ] Computed and/alt/rep : 676/4868/676 causal constraints in 53 ms.
[2020-06-03 21:56:25] [INFO ] Solution in real domain found non-integer solution.
[2020-06-03 21:56:25] [INFO ] [Nat]Absence check using 1 positive place invariants in 12 ms returned sat
[2020-06-03 21:56:25] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-06-03 21:56:25] [INFO ] [Nat]Absence check using state equation in 160 ms returned sat
[2020-06-03 21:56:25] [INFO ] Computed and/alt/rep : 676/4868/676 causal constraints in 51 ms.
[2020-06-03 21:56:41] [INFO ] Added : 668 causal constraints over 134 iterations in 15615 ms. Result :sat
[2020-06-03 21:56:41] [INFO ] [Real]Absence check using 1 positive place invariants in 6 ms returned sat
[2020-06-03 21:56:41] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-06-03 21:56:41] [INFO ] [Real]Absence check using state equation in 190 ms returned sat
[2020-06-03 21:56:41] [INFO ] Computed and/alt/rep : 676/4868/676 causal constraints in 43 ms.
[2020-06-03 21:56:41] [INFO ] Solution in real domain found non-integer solution.
[2020-06-03 21:56:41] [INFO ] [Nat]Absence check using 1 positive place invariants in 12 ms returned sat
[2020-06-03 21:56:41] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-06-03 21:56:42] [INFO ] [Nat]Absence check using state equation in 151 ms returned sat
[2020-06-03 21:56:42] [INFO ] Computed and/alt/rep : 676/4868/676 causal constraints in 49 ms.
[2020-06-03 21:56:58] [INFO ] Added : 669 causal constraints over 134 iterations in 16667 ms. Result :sat
[2020-06-03 21:56:58] [INFO ] [Real]Absence check using 1 positive place invariants in 5 ms returned sat
[2020-06-03 21:56:58] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-06-03 21:56:58] [INFO ] [Real]Absence check using state equation in 176 ms returned sat
[2020-06-03 21:56:59] [INFO ] Computed and/alt/rep : 676/4868/676 causal constraints in 50 ms.
[2020-06-03 21:56:59] [INFO ] Solution in real domain found non-integer solution.
[2020-06-03 21:56:59] [INFO ] [Nat]Absence check using 1 positive place invariants in 12 ms returned sat
[2020-06-03 21:56:59] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-06-03 21:56:59] [INFO ] [Nat]Absence check using state equation in 171 ms returned sat
[2020-06-03 21:56:59] [INFO ] Computed and/alt/rep : 676/4868/676 causal constraints in 45 ms.
[2020-06-03 21:57:14] [INFO ] Added : 668 causal constraints over 134 iterations in 15301 ms. Result :sat
[2020-06-03 21:57:14] [INFO ] [Real]Absence check using 1 positive place invariants in 6 ms returned sat
[2020-06-03 21:57:14] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-06-03 21:57:14] [INFO ] [Real]Absence check using state equation in 187 ms returned sat
[2020-06-03 21:57:14] [INFO ] Computed and/alt/rep : 676/4868/676 causal constraints in 54 ms.
[2020-06-03 21:57:15] [INFO ] Solution in real domain found non-integer solution.
[2020-06-03 21:57:15] [INFO ] [Nat]Absence check using 1 positive place invariants in 12 ms returned sat
[2020-06-03 21:57:15] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-06-03 21:57:15] [INFO ] [Nat]Absence check using state equation in 139 ms returned sat
[2020-06-03 21:57:15] [INFO ] Computed and/alt/rep : 676/4868/676 causal constraints in 33 ms.
[2020-06-03 21:57:27] [INFO ] Added : 600 causal constraints over 120 iterations in 12386 ms. Result :sat
[2020-06-03 21:57:27] [INFO ] [Real]Absence check using 1 positive place invariants in 5 ms returned sat
[2020-06-03 21:57:27] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-06-03 21:57:27] [INFO ] [Real]Absence check using state equation in 156 ms returned sat
[2020-06-03 21:57:27] [INFO ] Computed and/alt/rep : 676/4868/676 causal constraints in 59 ms.
[2020-06-03 21:57:27] [INFO ] Solution in real domain found non-integer solution.
[2020-06-03 21:57:28] [INFO ] [Nat]Absence check using 1 positive place invariants in 28 ms returned sat
[2020-06-03 21:57:28] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-06-03 21:57:28] [INFO ] [Nat]Absence check using state equation in 391 ms returned sat
[2020-06-03 21:57:28] [INFO ] Computed and/alt/rep : 676/4868/676 causal constraints in 61 ms.
[2020-06-03 21:57:44] [INFO ] Added : 668 causal constraints over 134 iterations in 15990 ms. Result :sat
[2020-06-03 21:57:44] [INFO ] [Real]Absence check using 1 positive place invariants in 3 ms returned sat
[2020-06-03 21:57:44] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-06-03 21:57:44] [INFO ] [Real]Absence check using state equation in 199 ms returned sat
[2020-06-03 21:57:44] [INFO ] Computed and/alt/rep : 676/4868/676 causal constraints in 49 ms.
[2020-06-03 21:57:44] [INFO ] Solution in real domain found non-integer solution.
[2020-06-03 21:57:44] [INFO ] [Nat]Absence check using 1 positive place invariants in 11 ms returned sat
[2020-06-03 21:57:44] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-06-03 21:57:45] [INFO ] [Nat]Absence check using state equation in 176 ms returned sat
[2020-06-03 21:57:45] [INFO ] Computed and/alt/rep : 676/4868/676 causal constraints in 60 ms.
[2020-06-03 21:58:04] [INFO ] Added : 668 causal constraints over 134 iterations in 19799 ms. Result :unknown
[2020-06-03 21:58:05] [INFO ] Flatten gal took : 84 ms
[2020-06-03 21:58:05] [INFO ] Flatten gal took : 31 ms
[2020-06-03 21:58:05] [INFO ] Export to MCC properties in file /home/mcc/execution/CTLFireability.sr.xml took 3 ms.
[2020-06-03 21:58:05] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml took 7 ms.
info: Time: 3600 - MCC
vrfy: Checking CTLFireability @ Diffusion2D-PT-D10N200 @ 3570 seconds

FORMULA Diffusion2D-PT-D10N200-CTLFireability-00 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA Diffusion2D-PT-D10N200-CTLFireability-04 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA Diffusion2D-PT-D10N200-CTLFireability-06 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA Diffusion2D-PT-D10N200-CTLFireability-08 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA Diffusion2D-PT-D10N200-CTLFireability-12 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA Diffusion2D-PT-D10N200-CTLFireability-11 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA Diffusion2D-PT-D10N200-CTLFireability-15 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA Diffusion2D-PT-D10N200-CTLFireability-05 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA Diffusion2D-PT-D10N200-CTLFireability-03 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA Diffusion2D-PT-D10N200-CTLFireability-01 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA Diffusion2D-PT-D10N200-CTLFireability-09 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA Diffusion2D-PT-D10N200-CTLFireability-07 CANNOT_COMPUTE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
TIME LIMIT: Killed by timeout after 3600 seconds
MemTotal: 16427456 kB
MemFree: 3121552 kB
After kill :
MemTotal: 16427456 kB
MemFree: 3144548 kB

--------------------
content from stderr:

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="Diffusion2D-PT-D10N200"
export BK_EXAMINATION="CTLFireability"
export BK_TOOL="itslola"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"

# 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 2-4028"
echo " Executing tool itslola"
echo " Input is Diffusion2D-PT-D10N200, examination is CTLFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r178-tajo-158987882400452"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/Diffusion2D-PT-D10N200.tgz
mv Diffusion2D-PT-D10N200 execution
cd execution
if [ "CTLFireability" = "ReachabilityDeadlock" ] || [ "CTLFireability" = "UpperBounds" ] || [ "CTLFireability" = "QuasiLiveness" ] || [ "CTLFireability" = "StableMarking" ] || [ "CTLFireability" = "Liveness" ] || [ "CTLFireability" = "OneSafe" ] || [ "CTLFireability" = "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 [ "CTLFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "CTLFireability" != "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 "CTLFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property CTLFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "CTLFireability.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 '' CTLFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "CTLFireability" = "ReachabilityDeadlock" ] || [ "CTLFireability" = "QuasiLiveness" ] || [ "CTLFireability" = "StableMarking" ] || [ "CTLFireability" = "Liveness" ] || [ "CTLFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME CTLFireability"
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 ;