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.r103-tall-167814478000225.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 DBSingleClientW-PT-d0m10, examination is CTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r103-tall-167814478000225
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 568K
-rw-r--r-- 1 mcc users 5.7K Feb 26 15:25 CTLCardinality.txt
-rw-r--r-- 1 mcc users 57K Feb 26 15:25 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.1K Feb 26 15:25 CTLFireability.txt
-rw-r--r-- 1 mcc users 60K Feb 26 15:25 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K Feb 25 15:48 LTLCardinality.txt
-rw-r--r-- 1 mcc users 28K Feb 25 15:48 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K Feb 25 15:48 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Feb 25 15:48 LTLFireability.xml
-rw-r--r-- 1 mcc users 15K Feb 26 15:26 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 162K Feb 26 15:26 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 6.3K Feb 26 15:25 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 48K Feb 26 15:25 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Feb 25 15:48 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Feb 25 15:48 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 equiv_col
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 119K 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 DBSingleClientW-PT-d0m10-CTLCardinality-00
FORMULA_NAME DBSingleClientW-PT-d0m10-CTLCardinality-01
FORMULA_NAME DBSingleClientW-PT-d0m10-CTLCardinality-02
FORMULA_NAME DBSingleClientW-PT-d0m10-CTLCardinality-03
FORMULA_NAME DBSingleClientW-PT-d0m10-CTLCardinality-04
FORMULA_NAME DBSingleClientW-PT-d0m10-CTLCardinality-05
FORMULA_NAME DBSingleClientW-PT-d0m10-CTLCardinality-06
FORMULA_NAME DBSingleClientW-PT-d0m10-CTLCardinality-07
FORMULA_NAME DBSingleClientW-PT-d0m10-CTLCardinality-08
FORMULA_NAME DBSingleClientW-PT-d0m10-CTLCardinality-09
FORMULA_NAME DBSingleClientW-PT-d0m10-CTLCardinality-10
FORMULA_NAME DBSingleClientW-PT-d0m10-CTLCardinality-11
FORMULA_NAME DBSingleClientW-PT-d0m10-CTLCardinality-12
FORMULA_NAME DBSingleClientW-PT-d0m10-CTLCardinality-13
FORMULA_NAME DBSingleClientW-PT-d0m10-CTLCardinality-14
FORMULA_NAME DBSingleClientW-PT-d0m10-CTLCardinality-15

=== Now, execution of the tool begins

BK_START 1678238354642

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=CTLCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=DBSingleClientW-PT-d0m10
Applying reductions before tool lola
Invoking reducer
Running Version 202303021504
[2023-03-08 01:19:16] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, CTLCardinality, -timeout, 360, -rebuildPNML]
[2023-03-08 01:19:16] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-08 01:19:16] [INFO ] Load time of PNML (sax parser for PT used): 56 ms
[2023-03-08 01:19:16] [INFO ] Transformed 553 places.
[2023-03-08 01:19:16] [INFO ] Transformed 150 transitions.
[2023-03-08 01:19:16] [INFO ] Parsed PT model containing 553 places and 150 transitions and 600 arcs in 115 ms.
Parsed 16 properties from file /home/mcc/execution/CTLCardinality.xml in 10 ms.
Deduced a syphon composed of 444 places in 1 ms
Reduce places removed 444 places and 0 transitions.
Initial state reduction rules removed 1 formulas.
FORMULA DBSingleClientW-PT-d0m10-CTLCardinality-00 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DBSingleClientW-PT-d0m10-CTLCardinality-03 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DBSingleClientW-PT-d0m10-CTLCardinality-04 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DBSingleClientW-PT-d0m10-CTLCardinality-05 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DBSingleClientW-PT-d0m10-CTLCardinality-06 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DBSingleClientW-PT-d0m10-CTLCardinality-07 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DBSingleClientW-PT-d0m10-CTLCardinality-09 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DBSingleClientW-PT-d0m10-CTLCardinality-11 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Support contains 5 out of 109 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 109/109 places, 150/150 transitions.
Reduce places removed 7 places and 0 transitions.
Ensure Unique test removed 11 transitions
Reduce isomorphic transitions removed 11 transitions.
Iterating post reduction 0 with 18 rules applied. Total rules applied 18 place count 102 transition count 139
Discarding 21 places :
Symmetric choice reduction at 1 with 21 rule applications. Total rules 39 place count 81 transition count 103
Iterating global reduction 1 with 21 rules applied. Total rules applied 60 place count 81 transition count 103
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 1 with 1 rules applied. Total rules applied 61 place count 81 transition count 102
Discarding 10 places :
Symmetric choice reduction at 2 with 10 rule applications. Total rules 71 place count 71 transition count 92
Iterating global reduction 2 with 10 rules applied. Total rules applied 81 place count 71 transition count 92
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 83 place count 69 transition count 89
Iterating global reduction 2 with 2 rules applied. Total rules applied 85 place count 69 transition count 89
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 86 place count 69 transition count 88
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 87 place count 68 transition count 86
Iterating global reduction 3 with 1 rules applied. Total rules applied 88 place count 68 transition count 86
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 89 place count 67 transition count 85
Iterating global reduction 3 with 1 rules applied. Total rules applied 90 place count 67 transition count 85
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 91 place count 66 transition count 84
Iterating global reduction 3 with 1 rules applied. Total rules applied 92 place count 66 transition count 84
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 3 with 2 rules applied. Total rules applied 94 place count 66 transition count 82
Applied a total of 94 rules in 33 ms. Remains 66 /109 variables (removed 43) and now considering 82/150 (removed 68) transitions.
// Phase 1: matrix 82 rows 66 cols
[2023-03-08 01:19:16] [INFO ] Computed 2 place invariants in 6 ms
[2023-03-08 01:19:16] [INFO ] Implicit Places using invariants in 216 ms returned []
[2023-03-08 01:19:16] [INFO ] Invariant cache hit.
[2023-03-08 01:19:16] [INFO ] State equation strengthened by 27 read => feed constraints.
[2023-03-08 01:19:16] [INFO ] Implicit Places using invariants and state equation in 224 ms returned []
Implicit Place search using SMT with State Equation took 466 ms to find 0 implicit places.
[2023-03-08 01:19:16] [INFO ] Invariant cache hit.
[2023-03-08 01:19:16] [INFO ] Dead Transitions using invariants and state equation in 50 ms found 0 transitions.
Starting structural reductions in LTL mode, iteration 1 : 66/109 places, 82/150 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 551 ms. Remains : 66/109 places, 82/150 transitions.
Support contains 5 out of 66 places after structural reductions.
[2023-03-08 01:19:17] [INFO ] Initial state reduction rules for CTL removed 2 formulas.
[2023-03-08 01:19:17] [INFO ] Flatten gal took : 25 ms
[2023-03-08 01:19:17] [INFO ] Initial state reduction rules for CTL removed 2 formulas.
FORMULA DBSingleClientW-PT-d0m10-CTLCardinality-12 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DBSingleClientW-PT-d0m10-CTLCardinality-10 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DBSingleClientW-PT-d0m10-CTLCardinality-08 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DBSingleClientW-PT-d0m10-CTLCardinality-02 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2023-03-08 01:19:17] [INFO ] Flatten gal took : 11 ms
[2023-03-08 01:19:17] [INFO ] Input system was already deterministic with 82 transitions.
Support contains 2 out of 66 places (down from 5) after GAL structural reductions.
FORMULA DBSingleClientW-PT-d0m10-CTLCardinality-15 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Incomplete random walk after 10000 steps, including 2301 resets, run finished after 165 ms. (steps per millisecond=60 ) properties (out of 2) seen :0
Incomplete Best-First random walk after 10001 steps, including 988 resets, run finished after 19 ms. (steps per millisecond=526 ) properties (out of 2) seen :1
Incomplete Best-First random walk after 10001 steps, including 1009 resets, run finished after 14 ms. (steps per millisecond=714 ) properties (out of 1) seen :0
Running SMT prover for 1 properties.
[2023-03-08 01:19:17] [INFO ] Invariant cache hit.
[2023-03-08 01:19:17] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2023-03-08 01:19:17] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2023-03-08 01:19:17] [INFO ] After 49ms SMT Verify possible using all constraints in real domain returned unsat :1 sat :0
Fused 1 Parikh solutions to 0 different solutions.
Parikh walk visited 0 properties in 1 ms.
Successfully simplified 1 atomic propositions for a total of 2 simplifications.
FORMULA DBSingleClientW-PT-d0m10-CTLCardinality-14 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2023-03-08 01:19:17] [INFO ] Flatten gal took : 8 ms
[2023-03-08 01:19:17] [INFO ] Flatten gal took : 6 ms
[2023-03-08 01:19:17] [INFO ] Input system was already deterministic with 82 transitions.
Computed a total of 5 stabilizing places and 11 stable transitions
Graph (complete) has 217 edges and 66 vertex of which 65 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.2 ms
Starting structural reductions in LTL mode, iteration 0 : 66/66 places, 82/82 transitions.
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 4 place count 62 transition count 74
Iterating global reduction 0 with 4 rules applied. Total rules applied 8 place count 62 transition count 74
Discarding 2 places :
Symmetric choice reduction at 0 with 2 rule applications. Total rules 10 place count 60 transition count 70
Iterating global reduction 0 with 2 rules applied. Total rules applied 12 place count 60 transition count 70
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 14 place count 60 transition count 68
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 15 place count 59 transition count 67
Iterating global reduction 1 with 1 rules applied. Total rules applied 16 place count 59 transition count 67
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 17 place count 58 transition count 66
Iterating global reduction 1 with 1 rules applied. Total rules applied 18 place count 58 transition count 66
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 20 place count 58 transition count 64
Applied a total of 20 rules in 9 ms. Remains 58 /66 variables (removed 8) and now considering 64/82 (removed 18) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 10 ms. Remains : 58/66 places, 64/82 transitions.
[2023-03-08 01:19:17] [INFO ] Flatten gal took : 3 ms
[2023-03-08 01:19:17] [INFO ] Flatten gal took : 4 ms
[2023-03-08 01:19:17] [INFO ] Input system was already deterministic with 64 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 66/66 places, 82/82 transitions.
Discarding 3 places :
Symmetric choice reduction at 0 with 3 rule applications. Total rules 3 place count 63 transition count 75
Iterating global reduction 0 with 3 rules applied. Total rules applied 6 place count 63 transition count 75
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 7 place count 62 transition count 74
Iterating global reduction 0 with 1 rules applied. Total rules applied 8 place count 62 transition count 74
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 10 place count 62 transition count 72
Applied a total of 10 rules in 13 ms. Remains 62 /66 variables (removed 4) and now considering 72/82 (removed 10) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 13 ms. Remains : 62/66 places, 72/82 transitions.
[2023-03-08 01:19:17] [INFO ] Flatten gal took : 4 ms
[2023-03-08 01:19:17] [INFO ] Flatten gal took : 4 ms
[2023-03-08 01:19:17] [INFO ] Input system was already deterministic with 72 transitions.
[2023-03-08 01:19:17] [INFO ] Flatten gal took : 5 ms
[2023-03-08 01:19:17] [INFO ] Flatten gal took : 5 ms
[2023-03-08 01:19:17] [INFO ] Export to MCC of 2 properties in file /home/mcc/execution/CTLCardinality.sr.xml took 1 ms.
[2023-03-08 01:19:17] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 66 places, 82 transitions and 322 arcs took 1 ms.
Total runtime 1312 ms.
There are residual formulas that ITS could not solve within timeout
starting LoLA
BK_INPUT DBSingleClientW-PT-d0m10
BK_EXAMINATION: CTLCardinality
bin directory: /home/mcc/BenchKit/bin//../reducer/bin//../../lola/bin/
current directory: /home/mcc/execution/372

FORMULA DBSingleClientW-PT-d0m10-CTLCardinality-01 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA DBSingleClientW-PT-d0m10-CTLCardinality-13 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

BK_STOP 1678238358578

--------------------
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 CTLCardinality -timeout 360 -rebuildPNML
lola: MEM LIMIT 32
lola: MEM LIMIT 5
lola: NET
lola: input: PNML file (--pnmlnet)
lola: reading net from /home/mcc/execution/372/model.pnml
lola: reading pnml
lola: PNML file contains place/transition net
lola: finished parsing
lola: closed net file /home/mcc/execution/372/model.pnml
lola: Reading formula.
lola: Using XML format (--xmlformula)
lola: reading XML formula
lola: reading formula from /home/mcc/execution/372/CTLCardinality.xml
lola: rewrite Frontend/Parser/formula_rewrite.k:98
lola: rewrite Frontend/Parser/formula_rewrite.k:129
lola: rewrite Frontend/Parser/formula_rewrite.k:475
lola: Created skeleton in 0.000000 secs.
lola: Rule S: 0 transitions removed,0 places removed
lola: rewrite Frontend/Parser/formula_rewrite.k:726
lola: rewrite Frontend/Parser/formula_rewrite.k:787
lola: LAUNCH INITIAL
lola: LAUNCH task # 1 (type CNST) for 0 DBSingleClientW-PT-d0m10-CTLCardinality-01
lola: time limit : 0 sec
lola: memory limit: 0 pages
lola: LAUNCH task # 6 (type EXCL) for 3 DBSingleClientW-PT-d0m10-CTLCardinality-13
lola: time limit : 1800 sec
lola: memory limit: 32 pages
lola: FINISHED task # 1 (type CNST) for DBSingleClientW-PT-d0m10-CTLCardinality-01
lola: result : true
lola: FINISHED task # 6 (type EXCL) for DBSingleClientW-PT-d0m10-CTLCardinality-13
lola: result : false
lola: markings : 14
lola: fired transitions : 13
lola: time used : 0.000000
lola: memory pages used : 1
lola: Portfolio finished: no open formulas

FINAL RESULTS
FINISHED FORMULA: CATEGORY VALUE PRODUCED BY
DBSingleClientW-PT-d0m10-CTLCardinality-01: INITIAL true preprocessing
DBSingleClientW-PT-d0m10-CTLCardinality-13: EFAG true tscc_search


Time elapsed: 0 secs. Pages in use: 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="DBSingleClientW-PT-d0m10"
export BK_EXAMINATION="CTLCardinality"
export BK_TOOL="lolaxred"
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 lolaxred"
echo " Input is DBSingleClientW-PT-d0m10, examination is CTLCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r103-tall-167814478000225"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/DBSingleClientW-PT-d0m10.tgz
mv DBSingleClientW-PT-d0m10 execution
cd execution
if [ "CTLCardinality" = "ReachabilityDeadlock" ] || [ "CTLCardinality" = "UpperBounds" ] || [ "CTLCardinality" = "QuasiLiveness" ] || [ "CTLCardinality" = "StableMarking" ] || [ "CTLCardinality" = "Liveness" ] || [ "CTLCardinality" = "OneSafe" ] || [ "CTLCardinality" = "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 [ "CTLCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "CTLCardinality" != "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 "CTLCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property CTLCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "CTLCardinality.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 '' CTLCardinality.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "CTLCardinality" = "ReachabilityDeadlock" ] || [ "CTLCardinality" = "QuasiLiveness" ] || [ "CTLCardinality" = "StableMarking" ] || [ "CTLCardinality" = "Liveness" ] || [ "CTLCardinality" = "OneSafe" ] ; then
echo "FORMULA_NAME CTLCardinality"
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 ;