Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2021-input.r004-tall-162037985700245.qcow2', fmt=qcow2 size=4294967296 backing_file='/data/fkordon/mcc2021-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 lola
Input is AirplaneLD-PT-0010, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r004-tall-162037985700245
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 772K
-rw-r--r-- 1 mcc users 49K May 5 16:58 CTLCardinality.txt
-rw-r--r-- 1 mcc users 227K May 5 16:58 CTLCardinality.xml
-rw-r--r-- 1 mcc users 28K May 5 16:58 CTLFireability.txt
-rw-r--r-- 1 mcc users 190K May 5 16:58 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 6 14:48 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 5.5K Mar 28 15:42 LTLCardinality.txt
-rw-r--r-- 1 mcc users 31K Mar 28 15:42 LTLCardinality.xml
-rw-r--r-- 1 mcc users 3.8K Mar 28 15:42 LTLFireability.txt
-rw-r--r-- 1 mcc users 24K Mar 28 15:42 LTLFireability.xml
-rw-r--r-- 1 mcc users 8.4K Mar 23 01:16 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 31K Mar 23 01:16 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 5.8K Mar 22 09:36 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 29K Mar 22 09:36 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Mar 22 09:09 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.9K Mar 22 09:09 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 May 5 16:51 equiv_col
-rw-r--r-- 1 mcc users 5 May 5 16:51 instance
-rw-r--r-- 1 mcc users 6 May 5 16:51 iscolored
-rw-r--r-- 1 mcc users 90K May 5 16:51 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 AirplaneLD-PT-0010-UpperBounds-00
FORMULA_NAME AirplaneLD-PT-0010-UpperBounds-01
FORMULA_NAME AirplaneLD-PT-0010-UpperBounds-02
FORMULA_NAME AirplaneLD-PT-0010-UpperBounds-03
FORMULA_NAME AirplaneLD-PT-0010-UpperBounds-04
FORMULA_NAME AirplaneLD-PT-0010-UpperBounds-05
FORMULA_NAME AirplaneLD-PT-0010-UpperBounds-06
FORMULA_NAME AirplaneLD-PT-0010-UpperBounds-07
FORMULA_NAME AirplaneLD-PT-0010-UpperBounds-08
FORMULA_NAME AirplaneLD-PT-0010-UpperBounds-09
FORMULA_NAME AirplaneLD-PT-0010-UpperBounds-10
FORMULA_NAME AirplaneLD-PT-0010-UpperBounds-11
FORMULA_NAME AirplaneLD-PT-0010-UpperBounds-12
FORMULA_NAME AirplaneLD-PT-0010-UpperBounds-13
FORMULA_NAME AirplaneLD-PT-0010-UpperBounds-14
FORMULA_NAME AirplaneLD-PT-0010-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1620434253019

starting LoLA
BK_INPUT AirplaneLD-PT-0010
BK_EXAMINATION: UpperBounds
bin directory: /home/mcc/BenchKit/bin
current directory: /home/mcc/execution
Upper Bounds

FORMULA AirplaneLD-PT-0010-UpperBounds-00 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA AirplaneLD-PT-0010-UpperBounds-02 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA AirplaneLD-PT-0010-UpperBounds-03 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA AirplaneLD-PT-0010-UpperBounds-01 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA AirplaneLD-PT-0010-UpperBounds-04 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA AirplaneLD-PT-0010-UpperBounds-06 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA AirplaneLD-PT-0010-UpperBounds-15 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA AirplaneLD-PT-0010-UpperBounds-11 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA AirplaneLD-PT-0010-UpperBounds-08 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA AirplaneLD-PT-0010-UpperBounds-13 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA AirplaneLD-PT-0010-UpperBounds-09 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA AirplaneLD-PT-0010-UpperBounds-05 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA AirplaneLD-PT-0010-UpperBounds-14 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA AirplaneLD-PT-0010-UpperBounds-07 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA AirplaneLD-PT-0010-UpperBounds-10 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

FORMULA AirplaneLD-PT-0010-UpperBounds-12 1 TECHNIQUES SEQUENTIAL_PROCESSING TOPOLOGICAL EXPLICIT STATE_COMPRESSION STUBBORN_SETS USE_NUPN UNFOLDING_TO_PT

BK_STOP 1620434253111

--------------------
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 # 53 (type EXCL) for 0 AirplaneLD-PT-0010-UpperBounds-00
lola: time limit : 128 sec
lola: memory limit: 32 pages
lola: LAUNCH task # 48 (type FNDP) for 6 AirplaneLD-PT-0010-UpperBounds-02
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: LAUNCH task # 49 (type EQUN) for 6 AirplaneLD-PT-0010-UpperBounds-02
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: LAUNCH task # 51 (type FNDP) for 0 AirplaneLD-PT-0010-UpperBounds-00
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: Structural Bound: 1
lola: REPORT NUM
lola: FINISHED task # 53 (type EXCL) for AirplaneLD-PT-0010-UpperBounds-00
lola: markings : 3
lola: fired transitions : 2
lola: time used : 0.000000
lola: memory pages used : 1
lola: CANCELED task # 51 (type FNDP) for AirplaneLD-PT-0010-UpperBounds-00 (obsolete)
lola: LAUNCH task # 71 (type EXCL) for 9 AirplaneLD-PT-0010-UpperBounds-03
lola: time limit : 133 sec
lola: memory limit: 32 pages
lola: LAUNCH task # 63 (type FNDP) for 12 AirplaneLD-PT-0010-UpperBounds-04
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: REPORT NUM
lola: FINISHED task # 48 (type FNDP) for AirplaneLD-PT-0010-UpperBounds-02
lola: tried executions : 1
lola: time used : 0.000000
lola: CANCELED task # 49 (type EQUN) for AirplaneLD-PT-0010-UpperBounds-02 (obsolete)
lola: REPORT NUM
lola: LAUNCH task # 66 (type FNDP) for 33 AirplaneLD-PT-0010-UpperBounds-11
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: LAUNCH task # 67 (type EQUN) for 33 AirplaneLD-PT-0010-UpperBounds-11
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: FINISHED task # 51 (type FNDP) for AirplaneLD-PT-0010-UpperBounds-00
lola: fired transitions : 1
lola: tried executions : 1
lola: time used : 0.000000
sara: try reading problem file /home/mcc/execution/UpperBounds-49.sara.
lola: Structural Bound: 1
lola: REPORT NUM
lola: FINISHED task # 71 (type EXCL) for AirplaneLD-PT-0010-UpperBounds-03
lola: markings : 6
lola: fired transitions : 5
lola: time used : 0.000000
lola: memory pages used : 1
lola: LAUNCH task # 56 (type EXCL) for 3 AirplaneLD-PT-0010-UpperBounds-01
lola: time limit : 144 sec
lola: memory limit: 32 pages
sara: place or transition ordering is non-deterministic

lola: Structural Bound: 1
lola: REPORT NUM
lola: FINISHED task # 56 (type EXCL) for AirplaneLD-PT-0010-UpperBounds-01
lola: markings : 5
lola: fired transitions : 4
lola: time used : 0.000000
lola: memory pages used : 1
lola: REPORT NUM
lola: LAUNCH task # 62 (type EXCL) for 18 AirplaneLD-PT-0010-UpperBounds-06
lola: time limit : 150 sec
lola: memory limit: 32 pages
lola: REPORT NUM
lola: FINISHED task # 49 (type EQUN) for AirplaneLD-PT-0010-UpperBounds-02
lola: time used : 0.000000
lola: FINISHED task # 63 (type FNDP) for AirplaneLD-PT-0010-UpperBounds-04
lola: tried executions : 1
lola: time used : 0.000000
lola: LAUNCH task # 75 (type FNDP) for 39 AirplaneLD-PT-0010-UpperBounds-13
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: Structural Bound: 1
lola: REPORT NUM
lola: FINISHED task # 62 (type EXCL) for AirplaneLD-PT-0010-UpperBounds-06
lola: markings : 3
lola: fired transitions : 2
lola: time used : 0.000000
lola: memory pages used : 1
lola: LAUNCH task # 86 (type EXCL) for 45 AirplaneLD-PT-0010-UpperBounds-15
lola: time limit : 180 sec
lola: memory limit: 32 pages
lola: Structural Bound: 1
lola: REPORT NUM
lola: FINISHED task # 86 (type EXCL) for AirplaneLD-PT-0010-UpperBounds-15
lola: markings : 2
lola: fired transitions : 1
lola: time used : 0.000000
lola: memory pages used : 1
lola: LAUNCH task # 74 (type EXCL) for 24 AirplaneLD-PT-0010-UpperBounds-08
lola: time limit : 200 sec
lola: memory limit: 32 pages
lola: REPORT NUM
lola: FINISHED task # 66 (type FNDP) for AirplaneLD-PT-0010-UpperBounds-11
lola: tried executions : 1
lola: time used : 0.000000
lola: CANCELED task # 67 (type EQUN) for AirplaneLD-PT-0010-UpperBounds-11 (obsolete)
lola: LAUNCH task # 78 (type FNDP) for 27 AirplaneLD-PT-0010-UpperBounds-09
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: LAUNCH task # 79 (type EQUN) for 27 AirplaneLD-PT-0010-UpperBounds-09
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: Structural Bound: 1
lola: REPORT NUM
lola: REPORT NUM
sara: try reading problem file /home/mcc/execution/UpperBounds-67.sara.
lola: REPORT NUM
lola: FINISHED task # 74 (type EXCL) for AirplaneLD-PT-0010-UpperBounds-08
lola: markings : 2
lola: fired transitions : 1
lola: time used : 0.000000
lola: memory pages used : 1
sara: error: :5: error: syntax error, unexpected $end, expecting KEY_TRANSITIONlola:
sara: LAUNCH task # 59 (type EXCL) for 15 AirplaneLD-PT-0010-UpperBounds-05error while reading Petri net from file
-- aborting [#04]
lola: sara: see manual for a documentation of this error
sara: last error message: No such file or directorytime limit : 257 sec

lola: memory limit: 32 pages
lola: FINISHED task # 75 (type FNDP) for AirplaneLD-PT-0010-UpperBounds-13
lola: tried executions : 1
lola: time used : 0.000000
lola: LAUNCH task # 87 (type FNDP) for 36 AirplaneLD-PT-0010-UpperBounds-12
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: FINISHED task # 78 (type FNDP) for AirplaneLD-PT-0010-UpperBounds-09
lola: tried executions : 1
lola: time used : 0.000000
lola: CANCELED task # 79 (type EQUN) for AirplaneLD-PT-0010-UpperBounds-09 (obsolete)
lola: LAUNCH task # 90 (type FNDP) for 30 AirplaneLD-PT-0010-UpperBounds-10
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: LAUNCH task # 91 (type EQUN) for 30 AirplaneLD-PT-0010-UpperBounds-10
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: Structural Bound: 1
lola: REPORT NUM
lola: FINISHED task # 59 (type EXCL) for AirplaneLD-PT-0010-UpperBounds-05
lola: markings : 2
lola: fired transitions : 1
lola: time used : 0.000000
lola: memory pages used : 1
sara: try reading problem file /home/mcc/execution/UpperBounds-79.sara.
lola: sara: error: LAUNCH task # 95 (type EXCL) for 42 AirplaneLD-PT-0010-UpperBounds-14:
5: error: lola: syntax error, unexpected $end, expecting KEY_TRANSITION
sara: time limit : 450 secerror while reading Petri net from file
-- aborting [#04]
lola: sara: see manual for a documentation of this error
sara: last error message: No such file or directorymemory limit: 32 pages

lola: Structural Bound: 1
lola: REPORT NUM
lola: FINISHED task # 95 (type EXCL) for AirplaneLD-PT-0010-UpperBounds-14
lola: markings : 2
lola: fired transitions : 1
lola: time used : 0.000000
lola: memory pages used : 1
lola: LAUNCH task # 83 (type EXCL) for 21 AirplaneLD-PT-0010-UpperBounds-07
lola: time limit : 600 sec
lola: memory limit: 32 pages
lola: Structural Bound: 1
lola: REPORT NUM
lola: FINISHED task # 83 (type EXCL) for AirplaneLD-PT-0010-UpperBounds-07
lola: markings : 2
lola: fired transitions : 1
lola: time used : 0.000000
lola: memory pages used : 1
lola: REPORT NUM
lola: FINISHED task # 90 (type FNDP) for AirplaneLD-PT-0010-UpperBounds-10
lola: tried executions : 1
lola: time used : 0.000000
lola: CANCELED task # 91 (type EQUN) for AirplaneLD-PT-0010-UpperBounds-10 (obsolete)
lola: LAUNCH task # 89 (type EXCL) for 36 AirplaneLD-PT-0010-UpperBounds-12
lola: time limit : 1800 sec
lola: memory limit: 32 pages
lola: LAUNCH task # 88 (type EQUN) for 36 AirplaneLD-PT-0010-UpperBounds-12
lola: time limit : 32000000 sec
lola: memory limit: 5 pages
lola: Structural Bound: 1
lola: REPORT NUM
lola: FINISHED task # 89 (type EXCL) for AirplaneLD-PT-0010-UpperBounds-12
lola: time used : 0.000000
lola: memory pages used : 1
lola: CANCELED task # 87 (type FNDP) for AirplaneLD-PT-0010-UpperBounds-12 (obsolete)
lola: CANCELED task # 88 (type EQUN) for AirplaneLD-PT-0010-UpperBounds-12 (obsolete)
lola: Portfolio finished: no open formulas

FINAL RESULTS
FINISHED FORMULA: CATEGORY VALUE PRODUCED BY
AirplaneLD-PT-0010-UpperBounds-00: BOUND 1 state space
AirplaneLD-PT-0010-UpperBounds-01: BOUND 1 state space
AirplaneLD-PT-0010-UpperBounds-02: BOUND 1 findpath
AirplaneLD-PT-0010-UpperBounds-03: BOUND 1 state space
AirplaneLD-PT-0010-UpperBounds-04: BOUND 1 findpath
AirplaneLD-PT-0010-UpperBounds-05: BOUND 1 state space
AirplaneLD-PT-0010-UpperBounds-06: BOUND 1 state space
AirplaneLD-PT-0010-UpperBounds-07: BOUND 1 state space
AirplaneLD-PT-0010-UpperBounds-08: BOUND 1 state space
AirplaneLD-PT-0010-UpperBounds-09: BOUND 1 findpath
AirplaneLD-PT-0010-UpperBounds-10: BOUND 1 findpath
AirplaneLD-PT-0010-UpperBounds-11: BOUND 1 findpath
AirplaneLD-PT-0010-UpperBounds-12: BOUND 1 state space
AirplaneLD-PT-0010-UpperBounds-13: BOUND 1 findpath
AirplaneLD-PT-0010-UpperBounds-14: BOUND 1 state space
AirplaneLD-PT-0010-UpperBounds-15: BOUND 1 state space


Time elapsed: 0 secs. Pages in use: 1
sara: try reading problem file /home/mcc/execution/UpperBounds-88.sara.
sara: error: :5: error: syntax error, unexpected $end, expecting KEY_TRANSITION
sara: error while reading Petri net from file -- aborting [#04]
sara: see manual for a documentation of this error
sara: last error message: No such file or directory

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="AirplaneLD-PT-0010"
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 2-4028"
echo " Executing tool lola"
echo " Input is AirplaneLD-PT-0010, 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 r004-tall-162037985700245"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/AirplaneLD-PT-0010.tgz
mv AirplaneLD-PT-0010 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 ;