Execution Chart

Sorry, for this execution, no execution chart could be reported.

Trace from the execution

Formatting '/data/fkordon/mcc2025-input.r254-tall-174931339800390.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2025-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 2-5832
Executing tool itstools
Input is ErlangenMainframeV0-PT-1203, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r254-tall-174931339800390
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 55M
-rw-r--r-- 1 mcc users 6.7K Jun 6 09:07 CTLCardinality.txt
-rw-r--r-- 1 mcc users 71K Jun 6 09:07 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.5K Jun 6 09:04 CTLFireability.txt
-rw-r--r-- 1 mcc users 46K Jun 6 09:04 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.7K Jun 6 12:04 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K Jun 6 12:04 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.6K Jun 6 12:05 LTLFireability.txt
-rw-r--r-- 1 mcc users 20K Jun 6 12:05 LTLFireability.xml
-rw-r--r-- 1 mcc users 1 Jun 5 20:08 NewModel
-rw-r--r-- 1 mcc users 8.8K Jun 6 09:14 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 87K Jun 6 09:14 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.2K Jun 6 09:11 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 74K Jun 6 09:11 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Jun 6 12:05 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Jun 6 12:05 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Jun 5 20:08 equiv_col
-rw-r--r-- 1 mcc users 5 Jun 5 20:08 instance
-rw-r--r-- 1 mcc users 6 Jun 5 20:08 iscolored
-rw-r--r-- 1 mcc users 55M Jun 5 20:08 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 ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-00
FORMULA_NAME ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-01
FORMULA_NAME ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-02
FORMULA_NAME ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-03
FORMULA_NAME ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-04
FORMULA_NAME ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-05
FORMULA_NAME ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-06
FORMULA_NAME ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-07
FORMULA_NAME ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-08
FORMULA_NAME ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-09
FORMULA_NAME ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-10
FORMULA_NAME ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-11
FORMULA_NAME ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-12
FORMULA_NAME ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-13
FORMULA_NAME ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-14
FORMULA_NAME ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-15

=== Now, execution of the tool begins

BK_START 1749377495420

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=ReachabilityCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=ErlangenMainframeV0-PT-1203
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
ReachabilityCardinality PT
Running Version 202505121319
[2025-06-08 10:11:36] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityCardinality, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2025-06-08 10:11:36] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2025-06-08 10:11:38] [INFO ] Load time of PNML (sax parser for PT used): 2086 ms
[2025-06-08 10:11:38] [INFO ] Transformed 289 places.
[2025-06-08 10:11:39] [INFO ] Transformed 41764 transitions.
[2025-06-08 10:11:39] [INFO ] Found NUPN structural information;
[2025-06-08 10:11:39] [INFO ] Parsed PT model containing 289 places and 41764 transitions and 1134359 arcs in 2559 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityCardinality.xml in 14 ms.
Working with output stream class java.io.PrintStream
FORMULA ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-02 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-04 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-09 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
RANDOM walk for 40000 steps (8 resets) in 18971 ms. (2 steps per ms) remains 5/13 properties
FORMULA ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-15 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-14 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-13 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-11 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-08 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-06 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-05 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-01 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
BEST_FIRST walk for 40002 steps (8 resets) in 3101 ms. (12 steps per ms) remains 5/5 properties
BEST_FIRST walk for 40003 steps (8 resets) in 4826 ms. (8 steps per ms) remains 5/5 properties
BEST_FIRST walk for 40003 steps (8 resets) in 6663 ms. (6 steps per ms) remains 5/5 properties
BEST_FIRST walk for 40003 steps (8 resets) in 1209 ms. (33 steps per ms) remains 5/5 properties
BEST_FIRST walk for 40002 steps (8 resets) in 1417 ms. (28 steps per ms) remains 5/5 properties
// Phase 1: matrix 41764 rows 289 cols
[2025-06-08 10:11:50] [INFO ] Computed 30 invariants in 922 ms
[2025-06-08 10:11:51] [INFO ] Flatten gal took : 9729 ms
Excessive predecessor constraint size, skipping predecessor.
Excessive predecessor constraint size, skipping predecessor.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/71 variables, 71/71 constraints. Problems are: Problem set: 0 solved, 5 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/71 variables, 0/71 constraints. Problems are: Problem set: 0 solved, 5 unsolved
Problem ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-03 is UNSAT
FORMULA ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-03 FALSE TECHNIQUES SMT_REFINEMENT
At refinement iteration 2 (OVERLAPS) 200/271 variables, 18/89 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/271 variables, 200/289 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/271 variables, 1/290 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/271 variables, 0/290 constraints. Problems are: Problem set: 1 solved, 4 unsolved
Problem ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-00 is UNSAT
FORMULA ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-00 FALSE TECHNIQUES SMT_REFINEMENT
Problem ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-07 is UNSAT
FORMULA ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-07 FALSE TECHNIQUES SMT_REFINEMENT
Problem ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-10 is UNSAT
FORMULA ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-10 FALSE TECHNIQUES SMT_REFINEMENT
At refinement iteration 6 (OVERLAPS) 18/289 variables, 11/301 constraints. Problems are: Problem set: 4 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/289 variables, 18/319 constraints. Problems are: Problem set: 4 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/289 variables, 0/319 constraints. Problems are: Problem set: 4 solved, 1 unsolved
SMT process timed out in 6563ms, After SMT, problems are : Problem set: 4 solved, 1 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 6 out of 289 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 289/289 places, 41764/41764 transitions.
Graph (trivial) has 222 edges and 289 vertex of which 6 / 289 are part of one of the 3 SCC in 23 ms
Free SCC test removed 3 places
Drop transitions (Empty/Sink Transition effects.) removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 89 transitions
Trivial Post-agglo rules discarded 89 transitions
Performed 89 trivial Post agglomeration. Transition count delta: 89
Iterating post reduction 0 with 89 rules applied. Total rules applied 90 place count 286 transition count 41669
Reduce places removed 89 places and 0 transitions.
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Iterating post reduction 1 with 91 rules applied. Total rules applied 181 place count 197 transition count 41667
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 2 with 2 rules applied. Total rules applied 183 place count 195 transition count 41667
[2025-06-08 10:11:57] [INFO ] Flatten gal took : 6664 ms
Performed 4 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 4 Pre rules applied. Total rules applied 183 place count 195 transition count 41663
Deduced a syphon composed of 4 places in 62 ms
Reduce places removed 4 places and 0 transitions.
Iterating global reduction 3 with 8 rules applied. Total rules applied 191 place count 191 transition count 41663
[2025-06-08 10:11:58] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality17603709392870448334.gal : 992 ms
[2025-06-08 10:11:58] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality3796069444618359451.prop : 2 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality17603709392870448334.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality3796069444618359451.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
Discarding 42 places :
Symmetric choice reduction at 3 with 42 rule applications. Total rules 233 place count 149 transition count 41621
Iterating global reduction 3 with 42 rules applied. Total rules applied 275 place count 149 transition count 41621
Performed 5 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 5 Pre rules applied. Total rules applied 275 place count 149 transition count 41616
Deduced a syphon composed of 5 places in 40 ms
Reduce places removed 5 places and 0 transitions.
Iterating global reduction 3 with 10 rules applied. Total rules applied 285 place count 144 transition count 41616
Discarding 12 places :
Symmetric choice reduction at 3 with 12 rule applications. Total rules 297 place count 132 transition count 27800
Ensure Unique test removed 9 places
Iterating global reduction 3 with 21 rules applied. Total rules applied 318 place count 123 transition count 27800
Discarding 12 places :
Symmetric choice reduction at 3 with 12 rule applications. Total rules 330 place count 111 transition count 168
Iterating global reduction 3 with 12 rules applied. Total rules applied 342 place count 111 transition count 168
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 345 place count 108 transition count 162
Iterating global reduction 3 with 3 rules applied. Total rules applied 348 place count 108 transition count 162
Performed 43 Post agglomeration using F-continuation condition.Transition count delta: 43
Deduced a syphon composed of 43 places in 0 ms
Reduce places removed 43 places and 0 transitions.
Iterating global reduction 3 with 86 rules applied. Total rules applied 434 place count 65 transition count 119
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 437 place count 62 transition count 90
Iterating global reduction 3 with 3 rules applied. Total rules applied 440 place count 62 transition count 90
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Iterating post reduction 3 with 3 rules applied. Total rules applied 443 place count 62 transition count 87
Performed 4 Post agglomeration using F-continuation condition.Transition count delta: -7
Deduced a syphon composed of 4 places in 0 ms
Reduce places removed 4 places and 0 transitions.
Iterating global reduction 4 with 8 rules applied. Total rules applied 451 place count 58 transition count 94
Drop transitions (Redundant composition of simpler transitions.) removed 11 transitions
Redundant transition composition rules discarded 11 transitions
Iterating global reduction 4 with 11 rules applied. Total rules applied 462 place count 58 transition count 83
Free-agglomeration rule applied 18 times.
Iterating global reduction 4 with 18 rules applied. Total rules applied 480 place count 58 transition count 65
Reduce places removed 18 places and 0 transitions.
Drop transitions (Empty/Sink Transition effects.) removed 16 transitions
Reduce isomorphic transitions removed 16 transitions.
Iterating post reduction 4 with 34 rules applied. Total rules applied 514 place count 40 transition count 49
Ensure Unique test removed 4 places
Iterating post reduction 5 with 4 rules applied. Total rules applied 518 place count 36 transition count 49
Drop transitions (Redundant composition of simpler transitions.) removed 8 transitions
Redundant transition composition rules discarded 8 transitions
Iterating global reduction 6 with 8 rules applied. Total rules applied 526 place count 36 transition count 41
Free-agglomeration rule applied 1 times.
Iterating global reduction 6 with 1 rules applied. Total rules applied 527 place count 36 transition count 40
Reduce places removed 1 places and 0 transitions.
Drop transitions (Empty/Sink Transition effects.) removed 1 transitions
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 6 with 5 rules applied. Total rules applied 532 place count 35 transition count 36
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 7 with 1 rules applied. Total rules applied 533 place count 34 transition count 35
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 7 with 2 rules applied. Total rules applied 535 place count 32 transition count 35
Applied a total of 535 rules in 12477 ms. Remains 32 /289 variables (removed 257) and now considering 35/41764 (removed 41729) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 12485 ms. Remains : 32/289 places, 35/41764 transitions.
RANDOM walk for 40000 steps (8 resets) in 386 ms. (103 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 118 ms. (336 steps per ms) remains 1/1 properties
Probably explored full state space saw : 704 states, properties seen :0
Probabilistic random walk after 3808 steps, saw 704 distinct states, run finished after 19 ms. (steps per millisecond=200 ) properties seen :0
Explored full state space saw : 704 states, properties seen :0
Exhaustive walk after 3808 steps, saw 704 distinct states, run finished after 5 ms. (steps per millisecond=761 ) properties seen :0
FORMULA ErlangenMainframeV0-PT-1203-ReachabilityCardinality-2025-12 FALSE TECHNIQUES TOPOLOGICAL EXHAUSTIVE_WALK
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 32615 ms.

BK_STOP 1749377529343

--------------------
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
+ [[ ReachabilityCardinality = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution ReachabilityCardinality -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_1.0.0.202505121319.jar
+ VERSION=202505121319
+ echo 'Running Version 202505121319'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination ReachabilityCardinality -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="ErlangenMainframeV0-PT-1203"
export BK_EXAMINATION="ReachabilityCardinality"
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 2-5832"
echo " Executing tool itstools"
echo " Input is ErlangenMainframeV0-PT-1203, 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 r254-tall-174931339800390"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/ErlangenMainframeV0-PT-1203.tgz
mv ErlangenMainframeV0-PT-1203 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.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 ;