fond
Model Checking Contest 2022
12th edition, Bergen, Norway, June 21, 2022
Execution of r291-smll-165463869900063
Last Updated
Jun 22, 2022

About the Execution of Tapaal for CANInsertWithFailure-PT-070

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
787.947 3592220.00 9258245.00 7673.30 T?TTTTTTTTF?F?TT normal

Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2022-input.r291-smll-165463869900063.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2022-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 2-4028
Executing tool tapaal
Input is CANInsertWithFailure-PT-070, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r291-smll-165463869900063
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 30M
-rw-r--r-- 1 mcc users 9.0K May 30 15:37 CTLCardinality.txt
-rw-r--r-- 1 mcc users 79K May 30 15:37 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.4K May 30 15:27 CTLFireability.txt
-rw-r--r-- 1 mcc users 43K May 30 15:27 CTLFireability.xml
-rw-r--r-- 1 mcc users 6 May 29 12:20 equiv_col
-rw-r--r-- 1 mcc users 4 May 29 12:20 instance
-rw-r--r-- 1 mcc users 6 May 29 12:20 iscolored
-rw-r--r-- 1 mcc users 4.4K May 25 12:59 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K May 25 12:59 LTLCardinality.xml
-rw-r--r-- 1 mcc users 3.2K May 25 12:59 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K May 25 12:59 LTLFireability.xml
-rw-r--r-- 1 mcc users 30M May 29 12:20 model.pnml
-rw-r--r-- 1 mcc users 1 May 29 12:20 NewModel
-rw-r--r-- 1 mcc users 13K May 30 15:45 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 97K May 30 15:45 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 15K May 30 15:40 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 98K May 30 15:40 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 2.0K May 25 12:59 UpperBounds.txt
-rw-r--r-- 1 mcc users 4.0K May 25 12:59 UpperBounds.xml

--------------------
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 CANInsertWithFailure-PT-070-ReachabilityFireability-00
FORMULA_NAME CANInsertWithFailure-PT-070-ReachabilityFireability-01
FORMULA_NAME CANInsertWithFailure-PT-070-ReachabilityFireability-02
FORMULA_NAME CANInsertWithFailure-PT-070-ReachabilityFireability-03
FORMULA_NAME CANInsertWithFailure-PT-070-ReachabilityFireability-04
FORMULA_NAME CANInsertWithFailure-PT-070-ReachabilityFireability-05
FORMULA_NAME CANInsertWithFailure-PT-070-ReachabilityFireability-06
FORMULA_NAME CANInsertWithFailure-PT-070-ReachabilityFireability-07
FORMULA_NAME CANInsertWithFailure-PT-070-ReachabilityFireability-08
FORMULA_NAME CANInsertWithFailure-PT-070-ReachabilityFireability-09
FORMULA_NAME CANInsertWithFailure-PT-070-ReachabilityFireability-10
FORMULA_NAME CANInsertWithFailure-PT-070-ReachabilityFireability-11
FORMULA_NAME CANInsertWithFailure-PT-070-ReachabilityFireability-12
FORMULA_NAME CANInsertWithFailure-PT-070-ReachabilityFireability-13
FORMULA_NAME CANInsertWithFailure-PT-070-ReachabilityFireability-14
FORMULA_NAME CANInsertWithFailure-PT-070-ReachabilityFireability-15

=== Now, execution of the tool begins

BK_START 1654722592931

tapaal
Got BK_BIN_PATH=/home/mcc/BenchKit/bin/
---> tapaal --- TAPAAL v5
Setting MODEL_PATH=.
Setting VERIFYPN=/home/mcc/BenchKit/bin/verifypn
Got BK_TIME_CONFINEMENT=3600
Setting TEMPDIR=/home/mcc/BenchKit/bin/tmp
Got BK_MEMORY_CONFINEMENT=16384
Limiting to 16265216 kB
Total timeout: 3590
Time left: 3590

**********************************************
* TAPAAL verifying ReachabilityFireability *
**********************************************
TEMPDIR=/home/mcc/BenchKit/bin/tmp
QF=/home/mcc/BenchKit/bin/tmp/tmp.Kv16naG02d
MF=/home/mcc/BenchKit/bin/tmp/tmp.HhCh8ItF3r
Time left: 3589
---------------------------------------------------
Step -1: Stripping Colors
---------------------------------------------------
Verifying stripped models (16 in total)
/home/mcc/BenchKit/bin/verifypn -n -c -q 718 -l 29 -d 299 -z 4 -x 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 ./model.pnml ./ReachabilityFireability.xml
CPN OverApproximation is only usable on colored models
Time left: 3589
---------------------------------------------------
Step 0: Parallel Simplification
---------------------------------------------------
Doing parallel simplification (16 in total)
Total simplification timout is 718 -- reduction timeout is 299
timeout 3589 /home/mcc/BenchKit/bin/verifypn -n -q 718 -l 29 -d 299 -z 4 -s OverApprox --binary-query-io 2 --write-simplified /home/mcc/BenchKit/bin/tmp/tmp.Kv16naG02d --write-reduced /home/mcc/BenchKit/bin/tmp/tmp.HhCh8ItF3r -x 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 ./model.pnml ./ReachabilityFireability.xml

Time left: 3570

---------------------------------------------------
Step 1: Parallel processing
---------------------------------------------------
Doing parallel verification of individual queries (16 in total)
Each query is verified by 4 parallel strategies for 256 seconds
------------------- QUERY 1 ----------------------
No solution found



Time left: 3310
------------------- QUERY 2 ----------------------
Solution found by parallel processing (step 1)
Search strategy option was ignored as the TAR engine is called.
Query index 0 was solved

Query is satisfied.


Solved using Trace Abstraction Refinement

Spent 0.020856 on verification
@@@2.37,122596@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -tar\ -s\ RDFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.HhCh8ItF3r /home/mcc/BenchKit/bin/tmp/tmp.Kv16naG02d --binary-query-io 1 -x 2 -n

FORMULA CANInsertWithFailure-PT-070-ReachabilityFireability-09 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT TRACE_ABSTRACTION_REFINEMENT
Time left: 3308
------------------- QUERY 3 ----------------------
Solution found by parallel processing (step 1)
Search strategy option was ignored as the TAR engine is called.
Query index 0 was solved

Query is NOT satisfied.


Solved using Trace Abstraction Refinement

Spent 0.022377 on verification
@@@2.24,123100@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -tar\ -s\ RDFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.HhCh8ItF3r /home/mcc/BenchKit/bin/tmp/tmp.Kv16naG02d --binary-query-io 1 -x 3 -n

FORMULA CANInsertWithFailure-PT-070-ReachabilityFireability-12 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT TRACE_ABSTRACTION_REFINEMENT
Time left: 3305
------------------- QUERY 4 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 0.014649 on verification
@@@2.75,123148@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ BestFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.HhCh8ItF3r /home/mcc/BenchKit/bin/tmp/tmp.Kv16naG02d --binary-query-io 1 -x 4 -n

FORMULA CANInsertWithFailure-PT-070-ReachabilityFireability-03 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3302
------------------- QUERY 5 ----------------------
No solution found



Time left: 3044
------------------- QUERY 6 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 13.2095 on verification
@@@15.90,124156@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ BFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.HhCh8ItF3r /home/mcc/BenchKit/bin/tmp/tmp.Kv16naG02d --binary-query-io 1 -x 6 -n

FORMULA CANInsertWithFailure-PT-070-ReachabilityFireability-06 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3028
------------------- QUERY 7 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 3.40688 on verification
@@@6.01,124224@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ BFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.HhCh8ItF3r /home/mcc/BenchKit/bin/tmp/tmp.Kv16naG02d --binary-query-io 1 -x 7 -n

FORMULA CANInsertWithFailure-PT-070-ReachabilityFireability-05 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3022
------------------- QUERY 8 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 201.056 on verification
@@@203.73,268172@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ BFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.HhCh8ItF3r /home/mcc/BenchKit/bin/tmp/tmp.Kv16naG02d --binary-query-io 1 -x 8 -n

FORMULA CANInsertWithFailure-PT-070-ReachabilityFireability-08 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 2818
------------------- QUERY 9 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 0.336423 on verification
@@@2.83,124660@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ BestFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.HhCh8ItF3r /home/mcc/BenchKit/bin/tmp/tmp.Kv16naG02d --binary-query-io 1 -x 9 -n

FORMULA CANInsertWithFailure-PT-070-ReachabilityFireability-00 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 2815
------------------- QUERY 10 ----------------------
No solution found



Time left: 2557
------------------- QUERY 11 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 0.010779 on verification
@@@2.03,123120@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ BestFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.HhCh8ItF3r /home/mcc/BenchKit/bin/tmp/tmp.Kv16naG02d --binary-query-io 1 -x 11 -n

FORMULA CANInsertWithFailure-PT-070-ReachabilityFireability-07 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 2555
------------------- QUERY 12 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 0.684985 on verification
Query index 0 was solved

Query is satisfied.

Spent 0.700078 on verification
@@@3.34,123612@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ BestFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.HhCh8ItF3r /home/mcc/BenchKit/bin/tmp/tmp.Kv16naG02d --binary-query-io 1 -x 12 -n

FORMULA CANInsertWithFailure-PT-070-ReachabilityFireability-02 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 2551
------------------- QUERY 13 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 0.013938 on verification
@@@2.51,123080@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ BestFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.HhCh8ItF3r /home/mcc/BenchKit/bin/tmp/tmp.Kv16naG02d --binary-query-io 1 -x 13 -n

FORMULA CANInsertWithFailure-PT-070-ReachabilityFireability-14 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 2548
------------------- QUERY 14 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 1.04847 on verification
@@@3.59,123080@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ BestFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.HhCh8ItF3r /home/mcc/BenchKit/bin/tmp/tmp.Kv16naG02d --binary-query-io 1 -x 14 -n

FORMULA CANInsertWithFailure-PT-070-ReachabilityFireability-04 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 2544
------------------- QUERY 15 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is NOT satisfied.

Spent 0.042387 on verification
@@@2.54,123676@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ BestFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.HhCh8ItF3r /home/mcc/BenchKit/bin/tmp/tmp.Kv16naG02d --binary-query-io 1 -x 15 -n

FORMULA CANInsertWithFailure-PT-070-ReachabilityFireability-10 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 2542
------------------- QUERY 16 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is satisfied.

Spent 0.073449 on verification
@@@2.60,123384@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -s\ BestFS\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.HhCh8ItF3r /home/mcc/BenchKit/bin/tmp/tmp.Kv16naG02d --binary-query-io 1 -x 16 -n

FORMULA CANInsertWithFailure-PT-070-ReachabilityFireability-15 TRUE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 2539
---------------------------------------------------
Step 2: Sequential processing
---------------------------------------------------
Remaining 3 queries are verified sequentially.
Each query is verified for a dynamic timeout (at least 598 seconds)
Time left: 2539
------------------- QUERY 1 ----------------------
Running query 1 for 846 seconds. Remaining: 3 queries and 2539 seconds
No solution found



Time left: 1691
------------------- QUERY 5 ----------------------
Running query 5 for 845 seconds. Remaining: 2 queries and 1691 seconds
No solution found



Time left: 844
------------------- QUERY 10 ----------------------
Running query 10 for 844 seconds. Remaining: 1 queries and 844 seconds
No solution found



Time left: -3
Out of time, terminating!
terminated-with-cleanup

BK_STOP 1654726185151

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

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="CANInsertWithFailure-PT-070"
export BK_EXAMINATION="ReachabilityFireability"
export BK_TOOL="tapaal"
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 tapaal"
echo " Input is CANInsertWithFailure-PT-070, examination is ReachabilityFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r291-smll-165463869900063"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/CANInsertWithFailure-PT-070.tgz
mv CANInsertWithFailure-PT-070 execution
cd execution
if [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "UpperBounds" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] || [ "ReachabilityFireability" = "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 [ "ReachabilityFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityFireability" != "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 "ReachabilityFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityFireability.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 '' ReachabilityFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME ReachabilityFireability"
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 ;