About the Execution of LoLa+red for SieveSingleMsgMbox-PT-d0m96
Execution Summary | |||||
Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
235.527 | 4846.00 | 11749.00 | 116.20 | FTTFFFTFTTTTFTTT | normal |
Execution Chart
We display below the execution chart for this examination (boot time has been removed).
Trace from the execution
Formatting '/mnt/tpsp/fkordon/mcc2023-input.r423-tajo-167905976700393.qcow2', fmt=qcow2 size=4294967296 backing_file='/mnt/tpsp/fkordon/mcc2023-input.qcow2' encryption=off cluster_size=65536 lazy_refcounts=off
Waiting for the VM to be ready (probing ssh)
....................
=====================================================================
Generated by BenchKit 2-5348
Executing tool lolaxred
Input is SieveSingleMsgMbox-PT-d0m96, examination is CTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r423-tajo-167905976700393
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 440K
-rw-r--r-- 1 mcc users 5.4K Feb 26 10:25 CTLCardinality.txt
-rw-r--r-- 1 mcc users 52K Feb 26 10:25 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.5K Feb 26 10:24 CTLFireability.txt
-rw-r--r-- 1 mcc users 64K Feb 26 10:24 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.7K Feb 25 17:05 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K Feb 25 17:05 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K Feb 25 17:05 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K Feb 25 17:05 LTLFireability.xml
-rw-r--r-- 1 mcc users 8.6K Feb 26 10:26 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 85K Feb 26 10:26 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 7.4K Feb 26 10:25 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 62K Feb 26 10:25 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Feb 25 17:05 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Feb 25 17:05 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 equiv_col
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 iscolored
-rw-r--r-- 1 mcc users 57K 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 SieveSingleMsgMbox-PT-d0m96-CTLCardinality-00
FORMULA_NAME SieveSingleMsgMbox-PT-d0m96-CTLCardinality-01
FORMULA_NAME SieveSingleMsgMbox-PT-d0m96-CTLCardinality-02
FORMULA_NAME SieveSingleMsgMbox-PT-d0m96-CTLCardinality-03
FORMULA_NAME SieveSingleMsgMbox-PT-d0m96-CTLCardinality-04
FORMULA_NAME SieveSingleMsgMbox-PT-d0m96-CTLCardinality-05
FORMULA_NAME SieveSingleMsgMbox-PT-d0m96-CTLCardinality-06
FORMULA_NAME SieveSingleMsgMbox-PT-d0m96-CTLCardinality-07
FORMULA_NAME SieveSingleMsgMbox-PT-d0m96-CTLCardinality-08
FORMULA_NAME SieveSingleMsgMbox-PT-d0m96-CTLCardinality-09
FORMULA_NAME SieveSingleMsgMbox-PT-d0m96-CTLCardinality-10
FORMULA_NAME SieveSingleMsgMbox-PT-d0m96-CTLCardinality-11
FORMULA_NAME SieveSingleMsgMbox-PT-d0m96-CTLCardinality-12
FORMULA_NAME SieveSingleMsgMbox-PT-d0m96-CTLCardinality-13
FORMULA_NAME SieveSingleMsgMbox-PT-d0m96-CTLCardinality-14
FORMULA_NAME SieveSingleMsgMbox-PT-d0m96-CTLCardinality-15
=== Now, execution of the tool begins
BK_START 1679246908263
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=SieveSingleMsgMbox-PT-d0m96
Applying reductions before tool lola
Invoking reducer
Running Version 202303021504
[2023-03-19 17:28:30] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, CTLCardinality, -timeout, 360, -rebuildPNML]
[2023-03-19 17:28:30] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-19 17:28:30] [INFO ] Load time of PNML (sax parser for PT used): 43 ms
[2023-03-19 17:28:30] [INFO ] Transformed 262 places.
[2023-03-19 17:28:30] [INFO ] Transformed 73 transitions.
[2023-03-19 17:28:30] [INFO ] Parsed PT model containing 262 places and 73 transitions and 292 arcs in 119 ms.
Parsed 16 properties from file /home/mcc/execution/CTLCardinality.xml in 11 ms.
Deduced a syphon composed of 190 places in 1 ms
Reduce places removed 190 places and 0 transitions.
FORMULA SieveSingleMsgMbox-PT-d0m96-CTLCardinality-03 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA SieveSingleMsgMbox-PT-d0m96-CTLCardinality-04 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA SieveSingleMsgMbox-PT-d0m96-CTLCardinality-08 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA SieveSingleMsgMbox-PT-d0m96-CTLCardinality-10 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA SieveSingleMsgMbox-PT-d0m96-CTLCardinality-12 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA SieveSingleMsgMbox-PT-d0m96-CTLCardinality-14 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Support contains 12 out of 72 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 72/72 places, 73/73 transitions.
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 2 place count 70 transition count 73
Discarding 5 places :
Symmetric choice reduction at 1 with 5 rule applications. Total rules 7 place count 65 transition count 68
Iterating global reduction 1 with 5 rules applied. Total rules applied 12 place count 65 transition count 68
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 13 place count 64 transition count 67
Iterating global reduction 1 with 1 rules applied. Total rules applied 14 place count 64 transition count 67
Applied a total of 14 rules in 36 ms. Remains 64 /72 variables (removed 8) and now considering 67/73 (removed 6) transitions.
// Phase 1: matrix 67 rows 64 cols
[2023-03-19 17:28:30] [INFO ] Computed 5 place invariants in 10 ms
[2023-03-19 17:28:31] [INFO ] Implicit Places using invariants in 216 ms returned []
[2023-03-19 17:28:31] [INFO ] Invariant cache hit.
[2023-03-19 17:28:31] [INFO ] State equation strengthened by 27 read => feed constraints.
[2023-03-19 17:28:31] [INFO ] Implicit Places using invariants and state equation in 165 ms returned []
Implicit Place search using SMT with State Equation took 426 ms to find 0 implicit places.
[2023-03-19 17:28:31] [INFO ] Invariant cache hit.
[2023-03-19 17:28:31] [INFO ] Dead Transitions using invariants and state equation in 54 ms found 0 transitions.
Starting structural reductions in LTL mode, iteration 1 : 64/72 places, 67/73 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 517 ms. Remains : 64/72 places, 67/73 transitions.
Support contains 12 out of 64 places after structural reductions.
[2023-03-19 17:28:31] [INFO ] Initial state reduction rules for CTL removed 4 formulas.
[2023-03-19 17:28:31] [INFO ] Flatten gal took : 23 ms
FORMULA SieveSingleMsgMbox-PT-d0m96-CTLCardinality-07 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA SieveSingleMsgMbox-PT-d0m96-CTLCardinality-06 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA SieveSingleMsgMbox-PT-d0m96-CTLCardinality-02 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA SieveSingleMsgMbox-PT-d0m96-CTLCardinality-00 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2023-03-19 17:28:31] [INFO ] Flatten gal took : 12 ms
[2023-03-19 17:28:31] [INFO ] Input system was already deterministic with 67 transitions.
Support contains 8 out of 64 places (down from 12) after GAL structural reductions.
FORMULA SieveSingleMsgMbox-PT-d0m96-CTLCardinality-01 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA SieveSingleMsgMbox-PT-d0m96-CTLCardinality-09 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Incomplete random walk after 10000 steps, including 2242 resets, run finished after 245 ms. (steps per millisecond=40 ) properties (out of 5) seen :1
Incomplete Best-First random walk after 10000 steps, including 1075 resets, run finished after 101 ms. (steps per millisecond=99 ) properties (out of 4) seen :0
Incomplete Best-First random walk after 10001 steps, including 472 resets, run finished after 52 ms. (steps per millisecond=192 ) properties (out of 4) seen :1
Incomplete Best-First random walk after 10001 steps, including 1041 resets, run finished after 55 ms. (steps per millisecond=181 ) properties (out of 3) seen :0
Running SMT prover for 3 properties.
[2023-03-19 17:28:31] [INFO ] Invariant cache hit.
[2023-03-19 17:28:32] [INFO ] [Real]Absence check using 2 positive place invariants in 24 ms returned sat
[2023-03-19 17:28:32] [INFO ] [Real]Absence check using 2 positive and 3 generalized place invariants in 29 ms returned sat
[2023-03-19 17:28:32] [INFO ] After 464ms SMT Verify possible using all constraints in real domain returned unsat :3 sat :0
Fused 3 Parikh solutions to 0 different solutions.
Parikh walk visited 0 properties in 0 ms.
Successfully simplified 3 atomic propositions for a total of 3 simplifications.
FORMULA SieveSingleMsgMbox-PT-d0m96-CTLCardinality-15 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2023-03-19 17:28:32] [INFO ] Flatten gal took : 6 ms
[2023-03-19 17:28:32] [INFO ] Flatten gal took : 17 ms
[2023-03-19 17:28:32] [INFO ] Input system was already deterministic with 67 transitions.
Computed a total of 8 stabilizing places and 11 stable transitions
Graph (complete) has 198 edges and 64 vertex of which 63 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.15 ms
Starting structural reductions in LTL mode, iteration 0 : 64/64 places, 67/67 transitions.
Discarding 5 places :
Symmetric choice reduction at 0 with 5 rule applications. Total rules 5 place count 59 transition count 62
Iterating global reduction 0 with 5 rules applied. Total rules applied 10 place count 59 transition count 62
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 11 place count 59 transition count 61
Applied a total of 11 rules in 4 ms. Remains 59 /64 variables (removed 5) and now considering 61/67 (removed 6) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 4 ms. Remains : 59/64 places, 61/67 transitions.
[2023-03-19 17:28:32] [INFO ] Flatten gal took : 4 ms
[2023-03-19 17:28:32] [INFO ] Flatten gal took : 4 ms
[2023-03-19 17:28:32] [INFO ] Input system was already deterministic with 61 transitions.
Starting structural reductions in SI_CTL mode, iteration 0 : 64/64 places, 67/67 transitions.
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 4 place count 60 transition count 63
Iterating global reduction 0 with 4 rules applied. Total rules applied 8 place count 60 transition count 63
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 9 place count 60 transition count 62
Applied a total of 9 rules in 31 ms. Remains 60 /64 variables (removed 4) and now considering 62/67 (removed 5) transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 31 ms. Remains : 60/64 places, 62/67 transitions.
[2023-03-19 17:28:32] [INFO ] Flatten gal took : 4 ms
[2023-03-19 17:28:32] [INFO ] Flatten gal took : 3 ms
[2023-03-19 17:28:32] [INFO ] Input system was already deterministic with 62 transitions.
Starting structural reductions in LTL mode, iteration 0 : 64/64 places, 67/67 transitions.
Discarding 5 places :
Symmetric choice reduction at 0 with 5 rule applications. Total rules 5 place count 59 transition count 62
Iterating global reduction 0 with 5 rules applied. Total rules applied 10 place count 59 transition count 62
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 11 place count 59 transition count 61
Applied a total of 11 rules in 7 ms. Remains 59 /64 variables (removed 5) and now considering 61/67 (removed 6) transitions.
Finished structural reductions in LTL mode , in 1 iterations and 7 ms. Remains : 59/64 places, 61/67 transitions.
[2023-03-19 17:28:32] [INFO ] Flatten gal took : 15 ms
[2023-03-19 17:28:32] [INFO ] Flatten gal took : 3 ms
[2023-03-19 17:28:32] [INFO ] Input system was already deterministic with 61 transitions.
[2023-03-19 17:28:32] [INFO ] Flatten gal took : 17 ms
[2023-03-19 17:28:32] [INFO ] Flatten gal took : 4 ms
[2023-03-19 17:28:32] [INFO ] Export to MCC of 3 properties in file /home/mcc/execution/CTLCardinality.sr.xml took 14 ms.
[2023-03-19 17:28:32] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 64 places, 67 transitions and 265 arcs took 11 ms.
Total runtime 2296 ms.
There are residual formulas that ITS could not solve within timeout
starting LoLA
BK_INPUT SieveSingleMsgMbox-PT-d0m96
BK_EXAMINATION: CTLCardinality
bin directory: /home/mcc/BenchKit/bin//../reducer/bin//../../lola/bin/
current directory: /home/mcc/execution/377
FORMULA SieveSingleMsgMbox-PT-d0m96-CTLCardinality-05 FALSE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA SieveSingleMsgMbox-PT-d0m96-CTLCardinality-11 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
FORMULA SieveSingleMsgMbox-PT-d0m96-CTLCardinality-13 TRUE TECHNIQUES COLLATERAL_PROCESSING EXPLICIT TOPOLOGICAL STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT
BK_STOP 1679246913109
--------------------
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'
++ ls /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202303021504.jar
++ sed s/.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/377/model.pnml
lola: reading pnml
lola: PNML file contains place/transition net
lola: finished parsing
lola: closed net file /home/mcc/execution/377/model.pnml
lola: Reading formula.
lola: Using XML format (--xmlformula)
lola: reading XML formula
lola: reading formula from /home/mcc/execution/377/CTLCardinality.xml
lola: rewrite Frontend/Parser/formula_rewrite.k:96
lola: rewrite Frontend/Parser/formula_rewrite.k:138
lola: rewrite Frontend/Parser/formula_rewrite.k:98
lola: rewrite Frontend/Parser/formula_rewrite.k:129
lola: rewrite Frontend/Parser/formula_rewrite.k:196
lola: rewrite Frontend/Parser/formula_rewrite.k:150
lola: Created skeleton in 0.000000 secs.
lola: Created skeleton in 0.000000 secs.
lola: Rule S: 0 transitions removed,0 places removed
lola: LAUNCH task # 4 (type EXCL) for 3 SieveSingleMsgMbox-PT-d0m96-CTLCardinality-11
lola: time limit : 1200 sec
lola: memory limit: 32 pages
lola: LAUNCH INITIAL
lola: LAUNCH task # 1 (type CNST) for 0 SieveSingleMsgMbox-PT-d0m96-CTLCardinality-05
lola: time limit : 0 sec
lola: memory limit: 0 pages
lola: FINISHED task # 1 (type CNST) for SieveSingleMsgMbox-PT-d0m96-CTLCardinality-05
lola: result : false
lola: rewrite Frontend/Parser/formula_rewrite.k:738
lola: rewrite Frontend/Parser/formula_rewrite.k:694
lola: FINISHED task # 4 (type EXCL) for SieveSingleMsgMbox-PT-d0m96-CTLCardinality-11
lola: result : true
lola: markings : 7
lola: fired transitions : 6
lola: time used : 0.000000
lola: memory pages used : 1
lola: LAUNCH task # 7 (type EXCL) for 6 SieveSingleMsgMbox-PT-d0m96-CTLCardinality-13
lola: time limit : 3600 sec
lola: memory limit: 32 pages
lola: FINISHED task # 7 (type EXCL) for SieveSingleMsgMbox-PT-d0m96-CTLCardinality-13
lola: result : true
lola: time used : 0.000000
lola: memory pages used : 1
lola: Portfolio finished: no open formulas
FINAL RESULTS
FINISHED FORMULA: CATEGORY VALUE PRODUCED BY
SieveSingleMsgMbox-PT-d0m96-CTLCardinality-05: INITIAL false preprocessing
SieveSingleMsgMbox-PT-d0m96-CTLCardinality-11: EG true state space / EG
SieveSingleMsgMbox-PT-d0m96-CTLCardinality-13: EU true state space /EU
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="SieveSingleMsgMbox-PT-d0m96"
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 SieveSingleMsgMbox-PT-d0m96, 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 r423-tajo-167905976700393"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/SieveSingleMsgMbox-PT-d0m96.tgz
mv SieveSingleMsgMbox-PT-d0m96 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 '
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 ;