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.r198-smll-167840344800245.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 lola
Input is HealthRecord-PT-02, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r198-smll-167840344800245
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 452K
-rw-r--r-- 1 mcc users 6.8K Feb 26 17:43 CTLCardinality.txt
-rw-r--r-- 1 mcc users 76K Feb 26 17:43 CTLCardinality.xml
-rw-r--r-- 1 mcc users 4.5K Feb 26 17:40 CTLFireability.txt
-rw-r--r-- 1 mcc users 38K Feb 26 17:40 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.4K Feb 25 16:13 LTLCardinality.txt
-rw-r--r-- 1 mcc users 23K Feb 25 16:13 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.1K Feb 25 16:13 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K Feb 25 16:13 LTLFireability.xml
-rw-r--r-- 1 mcc users 12K Feb 26 17:44 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 126K Feb 26 17:44 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 6.7K Feb 26 17:43 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 55K Feb 26 17:43 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Feb 25 16:13 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Feb 25 16:13 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 equiv_col
-rw-r--r-- 1 mcc users 3 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 47K 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 positive values
NUM_VECTOR

here is the order used to build the result vector(from text file)
FORMULA_NAME HealthRecord-PT-02-UpperBounds-00
FORMULA_NAME HealthRecord-PT-02-UpperBounds-01
FORMULA_NAME HealthRecord-PT-02-UpperBounds-02
FORMULA_NAME HealthRecord-PT-02-UpperBounds-03
FORMULA_NAME HealthRecord-PT-02-UpperBounds-04
FORMULA_NAME HealthRecord-PT-02-UpperBounds-05
FORMULA_NAME HealthRecord-PT-02-UpperBounds-06
FORMULA_NAME HealthRecord-PT-02-UpperBounds-07
FORMULA_NAME HealthRecord-PT-02-UpperBounds-08
FORMULA_NAME HealthRecord-PT-02-UpperBounds-09
FORMULA_NAME HealthRecord-PT-02-UpperBounds-10
FORMULA_NAME HealthRecord-PT-02-UpperBounds-11
FORMULA_NAME HealthRecord-PT-02-UpperBounds-12
FORMULA_NAME HealthRecord-PT-02-UpperBounds-13
FORMULA_NAME HealthRecord-PT-02-UpperBounds-14
FORMULA_NAME HealthRecord-PT-02-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1678549913717

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=lola
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=HealthRecord-PT-02
Not applying reductions.
Model is PT
UpperBounds PT
starting LoLA
BK_INPUT HealthRecord-PT-02
BK_EXAMINATION: UpperBounds
bin directory: /home/mcc/BenchKit/bin//../lola/bin/
current directory: /home/mcc/execution
Upper Bounds

FORMULA HealthRecord-PT-02-UpperBounds-07 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HealthRecord-PT-02-UpperBounds-06 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HealthRecord-PT-02-UpperBounds-09 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HealthRecord-PT-02-UpperBounds-08 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HealthRecord-PT-02-UpperBounds-14 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HealthRecord-PT-02-UpperBounds-00 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HealthRecord-PT-02-UpperBounds-05 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HealthRecord-PT-02-UpperBounds-03 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HealthRecord-PT-02-UpperBounds-11 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HealthRecord-PT-02-UpperBounds-02 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HealthRecord-PT-02-UpperBounds-04 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HealthRecord-PT-02-UpperBounds-01 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HealthRecord-PT-02-UpperBounds-12 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HealthRecord-PT-02-UpperBounds-13 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HealthRecord-PT-02-UpperBounds-15 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA HealthRecord-PT-02-UpperBounds-10 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

BK_STOP 1678549913946

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

lola: MEM LIMIT 32
lola: MEM LIMIT 5
lola: NET
lola: input: PNML file (--pnmlnet)
lola: reading net from /home/mcc/execution/model.pnml
lola: reading pnml
lola: PNML file contains place/transition net
lola: finished parsing
lola: closed net file /home/mcc/execution/model.pnml
lola: Reading formula.
lola: Using XML format (--xmlformula)
lola: reading XML formula
lola: reading formula from /home/mcc/execution/UpperBounds.xml
lola: Rule S: 0 transitions removed,0 places removed
lola: LAUNCH task # 52 (type EXCL) for 21 HealthRecord-PT-02-UpperBounds-07
lola: time limit : 133 sec
lola: memory limit: 32 pages
lola: LAUNCH task # 50 (type FNDP) for 21 HealthRecord-PT-02-UpperBounds-07
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: LAUNCH task # 51 (type EQUN) for 21 HealthRecord-PT-02-UpperBounds-07
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: LAUNCH task # 48 (type FNDP) for 18 HealthRecord-PT-02-UpperBounds-06
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: REPORT NUM
lola: FINISHED task # 50 (type FNDP) for HealthRecord-PT-02-UpperBounds-07
lola: fired transitions : 7
lola: tried executions : 1
lola: time used : 0.000000
lola: CANCELED task # 51 (type EQUN) for HealthRecord-PT-02-UpperBounds-07 (obsolete)
lola: CANCELED task # 52 (type EXCL) for HealthRecord-PT-02-UpperBounds-07 (obsolete)
lola: REPORT NUM
lola: LAUNCH task # 62 (type EXCL) for 27 HealthRecord-PT-02-UpperBounds-09
lola: time limit : 138 sec
lola: memory limit: 32 pages
lola: LAUNCH task # 63 (type FNDP) for 0 HealthRecord-PT-02-UpperBounds-00
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: LAUNCH task # 64 (type EQUN) for 0 HealthRecord-PT-02-UpperBounds-00
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: FINISHED task # 48 (type FNDP) for HealthRecord-PT-02-UpperBounds-06
lola: tried executions : 1
lola: time used : 0.000000
lola: LAUNCH task # 69 (type FNDP) for 33 HealthRecord-PT-02-UpperBounds-11
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: Structural Bound: 1
lola: REPORT NUM
lola: FINISHED task # 62 (type EXCL) for HealthRecord-PT-02-UpperBounds-09
lola: markings : 9
lola: fired transitions : 8
lola: time used : 0.000000
lola: memory pages used : 1
lola: LAUNCH task # 58 (type EXCL) for 24 HealthRecord-PT-02-UpperBounds-08
lola: time limit : 163 sec
lola: memory limit: 32 pages
lola: Structural Bound: 1
lola: REPORT NUM
lola: FINISHED task # 58 (type EXCL) for HealthRecord-PT-02-UpperBounds-08
lola: markings : 2
lola: fired transitions : 1
lola: time used : 0.000000
lola: memory pages used : 1
lola: LAUNCH task # 80 (type EXCL) for 42 HealthRecord-PT-02-UpperBounds-14
lola: time limit : 180 sec
lola: memory limit: 32 pages
lola: Structural Bound: 1
lola: REPORT NUM
lola: FINISHED task # 80 (type EXCL) for HealthRecord-PT-02-UpperBounds-14
lola: markings : 2
lola: fired transitions : 1
lola: time used : 0.000000
lola: memory pages used : 1
lola: LAUNCH task # 55 (type EXCL) for 15 HealthRecord-PT-02-UpperBounds-05
lola: time limit : 200 sec
lola: memory limit: 32 pages
lola: REPORT NUM
lola: FINISHED task # 63 (type FNDP) for HealthRecord-PT-02-UpperBounds-00
lola: tried executions : 1
lola: time used : 0.000000
lola: Structural Bound: 1
lola: REPORT NUM
lola: FINISHED task # 55 (type EXCL) for HealthRecord-PT-02-UpperBounds-05
lola: markings : 2
lola: fired transitions : 1
lola: time used : 0.000000
lola: memory pages used : 1
lola: CANCELED task # 64 (type EQUN) for HealthRecord-PT-02-UpperBounds-00 (obsolete)
lola: LAUNCH task # 92 (type EXCL) for 9 HealthRecord-PT-02-UpperBounds-03
lola: time limit : 240 sec
lola: memory limit: 32 pages
lola: LAUNCH task # 66 (type FNDP) for 12 HealthRecord-PT-02-UpperBounds-04
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: LAUNCH task # 67 (type EQUN) for 12 HealthRecord-PT-02-UpperBounds-04
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: Structural Bound: 1
lola: REPORT NUM
lola: FINISHED task # 92 (type EXCL) for HealthRecord-PT-02-UpperBounds-03
lola: markings : 2
lola: fired transitions : 1
lola: time used : 0.000000
lola: memory pages used : 1
lola: LAUNCH task # 89 (type EXCL) for 6 HealthRecord-PT-02-UpperBounds-02
lola: time limit : 257 sec
lola: memory limit: 32 pages
lola: Structural Bound: 1
lola: REPORT NUM
lola: Structural Bound: 1
lola: FINISHED task # 69 (type FNDP) for HealthRecord-PT-02-UpperBounds-11
lola: tried executions : 1
lola: time used : 0.000000
lola: REPORT NUM
lola: LAUNCH task # 72 (type FNDP) for 3 HealthRecord-PT-02-UpperBounds-01
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: FINISHED task # 89 (type EXCL) for HealthRecord-PT-02-UpperBounds-02
lola: markings : 4
lola: fired transitions : 3
lola: time used : 0.000000
lola: memory pages used : 1
sara: try reading problem file /home/mcc/execution/UpperBounds-64.sara.
sara: try reading problem file /home/mcc/execution/UpperBounds-67.sara.
lola: LAUNCH task # 95 (type EXCL) for 45 HealthRecord-PT-02-UpperBounds-15
lola: time limit : 327 sec
lola: memory limit: 32 pages
sara: try reading problem file /home/mcc/execution/UpperBounds-51.sara.
lola: REPORT NUM
lola: FINISHED task # 66 (type FNDP) for HealthRecord-PT-02-UpperBounds-04
lola: tried executions : 1
lola: time used : 0.000000
lola: CANCELED task # 67 (type EQUN) for HealthRecord-PT-02-UpperBounds-04 (obsolete)
lola: LAUNCH task # 75 (type FNDP) for 36 HealthRecord-PT-02-UpperBounds-12
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: LAUNCH task # 76 (type EQUN) for 36 HealthRecord-PT-02-UpperBounds-12
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
sara: place or transition ordering is non-deterministic
lola: REPORT NUM
lola: FINISHED task # 72 (type FNDP) for HealthRecord-PT-02-UpperBounds-01
lola: fired transitions : 1
lola: tried executions : 1
lola: time used : 0.000000
lola: LAUNCH task # 81 (type FNDP) for 30 HealthRecord-PT-02-UpperBounds-10
lola: time limit : 32000000 sec
lola: memory limit: 5 pages

lola: REPORT NUM
lola: FINISHED task # 75 (type FNDP) for HealthRecord-PT-02-UpperBounds-12
lola: fired transitions : 2
lola: tried executions : 1
lola: time used : 0.000000
lola: CANCELED task # 76 (type EQUN) for HealthRecord-PT-02-UpperBounds-12 (obsolete)
lola: LAUNCH task # 84 (type FNDP) for 39 HealthRecord-PT-02-UpperBounds-13
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: LAUNCH task # 85 (type EQUN) for 39 HealthRecord-PT-02-UpperBounds-13
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
sara: place or transition ordering is non-deterministic

lola: REPORT NUM
lola: FINISHED task # 84 (type FNDP) for HealthRecord-PT-02-UpperBounds-13
lola: tried executions : 1
lola: time used : 0.000000
lola: CANCELED task # 85 (type EQUN) for HealthRecord-PT-02-UpperBounds-13 (obsolete)
lola: LAUNCH task # 82 (type EQUN) for 30 HealthRecord-PT-02-UpperBounds-10
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: REPORT NUM
lola: LAUNCH task # 93 (type FNDP) for 45 HealthRecord-PT-02-UpperBounds-15
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: FINISHED task # 64 (type EQUN) for HealthRecord-PT-02-UpperBounds-00
lola: time used : 0.000000
sara: place or transition ordering is non-deterministic
lola: Structural Bound: 1
lola: REPORT NUM
lola: FINISHED task # 95 (type EXCL) for HealthRecord-PT-02-UpperBounds-15sara:
try reading problem file /home/mcc/execution/UpperBounds-76.sara.lola:
markings : 70
lola: fired transitions : 81
lola: time used : 0.000000
lola: memory pages used : 1
lola: CANCELED task # 93 (type FNDP) for HealthRecord-PT-02-UpperBounds-15 (obsolete)
sara: place or transition ordering is non-deterministic
lola: LAUNCH task # 83 (type EXCL) for 30 HealthRecord-PT-02-UpperBounds-10
lola: time limit : 1800 sec
lola: memory limit: 32 pages


lola: Structural Bound: 1
lola: REPORT NUM
sara: try reading problem file /home/mcc/execution/UpperBounds-82.sara.
lola: FINISHED task # 83 (type EXCL) for HealthRecord-PT-02-UpperBounds-10
lola: markings : 3
lola: fired transitions : 2
lola: time used : 0.000000
lola: memory pages used : 1
lola: CANCELED task # 81 (type FNDP) for HealthRecord-PT-02-UpperBounds-10 (obsolete)
lola: CANCELED task # 82 (type EQUN) for HealthRecord-PT-02-UpperBounds-10 (obsolete)
lola: REPORT NUM
lola: Portfolio finished: no open formulas

FINAL RESULTS
FINISHED FORMULA: CATEGORY VALUE PRODUCED BY
HealthRecord-PT-02-UpperBounds-00: BOUND 1 findpath
HealthRecord-PT-02-UpperBounds-01: BOUND 1 findpath
HealthRecord-PT-02-UpperBounds-02: BOUND 1 state space
HealthRecord-PT-02-UpperBounds-03: BOUND 1 state space
HealthRecord-PT-02-UpperBounds-04: BOUND 1 findpath
HealthRecord-PT-02-UpperBounds-05: BOUND 1 state space
HealthRecord-PT-02-UpperBounds-06: BOUND 1 findpath
HealthRecord-PT-02-UpperBounds-07: BOUND 1 findpath
HealthRecord-PT-02-UpperBounds-08: BOUND 1 state space
HealthRecord-PT-02-UpperBounds-09: BOUND 1 state space
HealthRecord-PT-02-UpperBounds-10: BOUND 1 state space
HealthRecord-PT-02-UpperBounds-11: BOUND 1 findpath
HealthRecord-PT-02-UpperBounds-12: BOUND 1 findpath
HealthRecord-PT-02-UpperBounds-13: BOUND 1 findpath
HealthRecord-PT-02-UpperBounds-14: BOUND 1 state space
HealthRecord-PT-02-UpperBounds-15: BOUND 1 state space


Time elapsed: 0 secs. Pages in use: 2
lola: REPORT NUM
lola: REPORT NUM
lola: REPORT NUM

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="HealthRecord-PT-02"
export BK_EXAMINATION="UpperBounds"
export BK_TOOL="lola"
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 lola"
echo " Input is HealthRecord-PT-02, examination is UpperBounds"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r198-smll-167840344800245"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/HealthRecord-PT-02.tgz
mv HealthRecord-PT-02 execution
cd execution
if [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "UpperBounds" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] || [ "UpperBounds" = "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 [ "UpperBounds" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "UpperBounds" != "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 "UpperBounds.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property UpperBounds.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "UpperBounds.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 '' UpperBounds.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] ; then
echo "FORMULA_NAME UpperBounds"
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 ;