fond
Model Checking Contest 2024
14th edition, Geneva, Switzerland, June 25, 2024
Execution of r444-smll-171701111500414
Last Updated
July 7, 2024

About the Execution of ITS-Tools for ViralEpidemic-PT-S16D2C4A03

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
8898.340 127397.00 356966.00 724.50 FTFTTTFTTTTFFFTT normal

Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2024-input.r444-smll-171701111500414.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2024-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 2-5568
Executing tool itstools
Input is ViralEpidemic-PT-S16D2C4A03, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r444-smll-171701111500414
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 54M
-rw-r--r-- 1 mcc users 7.2K May 14 13:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 56K May 14 13:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 7.1K May 14 13:22 CTLFireability.txt
-rw-r--r-- 1 mcc users 51K May 14 13:22 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 18 16:43 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.8K May 18 16:43 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 5.2K May 19 07:18 LTLCardinality.txt
-rw-r--r-- 1 mcc users 29K May 19 16:49 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.7K May 19 07:40 LTLFireability.txt
-rw-r--r-- 1 mcc users 15K May 19 19:32 LTLFireability.xml
-rw-r--r-- 1 mcc users 16K Apr 12 07:20 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 121K Apr 12 07:20 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 15K Apr 12 06:10 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 100K Apr 12 06:10 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 2.0K Apr 23 08:05 UpperBounds.txt
-rw-r--r-- 1 mcc users 4.0K Apr 23 08:05 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 18 16:43 equiv_col
-rw-r--r-- 1 mcc users 11 May 18 16:43 instance
-rw-r--r-- 1 mcc users 6 May 18 16:43 iscolored
-rw-r--r-- 1 mcc users 54M May 18 16:43 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 ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-00
FORMULA_NAME ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-01
FORMULA_NAME ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-02
FORMULA_NAME ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-03
FORMULA_NAME ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-04
FORMULA_NAME ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-05
FORMULA_NAME ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-06
FORMULA_NAME ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-07
FORMULA_NAME ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-08
FORMULA_NAME ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-09
FORMULA_NAME ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-10
FORMULA_NAME ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-11
FORMULA_NAME ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-12
FORMULA_NAME ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-13
FORMULA_NAME ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-14
FORMULA_NAME ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-15

=== Now, execution of the tool begins

BK_START 1717224764233

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=ReachabilityCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=ViralEpidemic-PT-S16D2C4A03
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
ReachabilityCardinality PT
Running Version 202405141337
[2024-06-01 06:52:46] [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]
[2024-06-01 06:52:46] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2024-06-01 06:52:49] [INFO ] Load time of PNML (sax parser for PT used): 2775 ms
[2024-06-01 06:52:49] [INFO ] Transformed 78643 places.
[2024-06-01 06:52:50] [INFO ] Transformed 144177 transitions.
[2024-06-01 06:52:50] [INFO ] Parsed PT model containing 78643 places and 144177 transitions and 353889 arcs in 3462 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityCardinality.xml in 69 ms.
Working with output stream class java.io.PrintStream
[2024-06-01 06:53:03] [INFO ] Flatten gal took : 9443 ms
RANDOM walk for 40000 steps (8 resets) in 57123 ms. (0 steps per ms) remains 11/16 properties
FORMULA ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-15 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-12 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-09 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-08 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-02 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
[2024-06-01 06:53:08] [INFO ] Flatten gal took : 4746 ms
[2024-06-01 06:53:09] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality3730817134111725182.gal : 1078 ms
[2024-06-01 06:53:09] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality18424163067715550813.prop : 10 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202405141337/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality3730817134111725182.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality18424163067715550813.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202405141337/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
BEST_FIRST walk for 40004 steps (8 resets) in 12240 ms. (3 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 11235 ms. (3 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 11013 ms. (3 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 11443 ms. (3 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (8 resets) in 10375 ms. (3 steps per ms) remains 10/11 properties
FORMULA ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-07 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 40004 steps (8 resets) in 10734 ms. (3 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 10238 ms. (3 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 11856 ms. (3 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 10948 ms. (3 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 10541 ms. (3 steps per ms) remains 10/10 properties
// Phase 1: matrix 144177 rows 78643 cols
[2024-06-01 06:54:37] [INFO ] Invariants computation overflowed in 61349 ms
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/210 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 1 (OVERLAPS) 1008/1218 variables, 210/210 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/1218 variables, 0/210 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 3 (OVERLAPS) 11023/12241 variables, 3923/4133 constraints. Problems are: Problem set: 0 solved, 10 unsolved
Error getting values : (error "ParserException while parsing response: (timeout
org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 12241/222820 variables, and 4133 constraints, problems are : Problem set: 0 solved, 10 unsolved in 5074 ms.
Refiners :[State Equation: 4133/78643 constraints, PredecessorRefiner: 10/10 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 10 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/210 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 1 (OVERLAPS) 1008/1218 variables, 210/210 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/1218 variables, 0/210 constraints. Problems are: Problem set: 0 solved, 10 unsolved
SMT process timed out in 72793ms, After SMT, problems are : Problem set: 0 solved, 10 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 210 out of 78643 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 78643/78643 places, 144177/144177 transitions.
Graph (complete) has 69904 edges and 78643 vertex of which 1367 are kept as prefixes of interest. Removing 77276 places using SCC suffix rule.89 ms
Discarding 77276 places :
Also discarding 136541 output transitions
Drop transitions (Output transitions of discarded places.) removed 136541 transitions
Drop transitions (Empty/Sink Transition effects.) removed 6450 transitions
Reduce isomorphic transitions removed 6450 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 18 transitions
Trivial Post-agglo rules discarded 18 transitions
Performed 18 trivial Post agglomeration. Transition count delta: 18
Iterating post reduction 0 with 6468 rules applied. Total rules applied 6469 place count 1367 transition count 1168
Reduce places removed 18 places and 0 transitions.
Iterating post reduction 1 with 18 rules applied. Total rules applied 6487 place count 1349 transition count 1168
Performed 81 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 81 Pre rules applied. Total rules applied 6487 place count 1349 transition count 1087
Deduced a syphon composed of 81 places in 1 ms
Reduce places removed 81 places and 0 transitions.
Iterating global reduction 2 with 162 rules applied. Total rules applied 6649 place count 1268 transition count 1087
Discarding 596 places :
Symmetric choice reduction at 2 with 596 rule applications. Total rules 7245 place count 672 transition count 486
Iterating global reduction 2 with 596 rules applied. Total rules applied 7841 place count 672 transition count 486
Performed 78 Post agglomeration using F-continuation condition.Transition count delta: 78
Deduced a syphon composed of 78 places in 0 ms
Reduce places removed 78 places and 0 transitions.
Iterating global reduction 2 with 156 rules applied. Total rules applied 7997 place count 594 transition count 408
Renaming transitions due to excessive name length > 1024 char.
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 2 with 1 rules applied. Total rules applied 7998 place count 593 transition count 407
Ensure Unique test removed 26 places
Iterating post reduction 2 with 26 rules applied. Total rules applied 8024 place count 567 transition count 407
Applied a total of 8024 rules in 1532 ms. Remains 567 /78643 variables (removed 78076) and now considering 407/144177 (removed 143770) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1549 ms. Remains : 567/78643 places, 407/144177 transitions.
RANDOM walk for 40000 steps (80 resets) in 1354 ms. (29 steps per ms) remains 3/10 properties
FORMULA ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-13 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-11 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-06 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-04 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-03 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-01 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-00 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
BEST_FIRST walk for 40004 steps (8 resets) in 522 ms. (76 steps per ms) remains 3/3 properties
BEST_FIRST walk for 40004 steps (8 resets) in 463 ms. (86 steps per ms) remains 3/3 properties
BEST_FIRST walk for 40003 steps (8 resets) in 615 ms. (64 steps per ms) remains 3/3 properties
// Phase 1: matrix 407 rows 567 cols
[2024-06-01 06:54:51] [INFO ] Computed 162 invariants in 15 ms
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/32 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 48/80 variables, 23/23 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/80 variables, 0/23 constraints. Problems are: Problem set: 0 solved, 3 unsolved
Problem ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-14 is UNSAT
FORMULA ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-14 TRUE TECHNIQUES SMT_REFINEMENT
At refinement iteration 3 (OVERLAPS) 63/143 variables, 80/103 constraints. Problems are: Problem set: 1 solved, 2 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/143 variables, 0/103 constraints. Problems are: Problem set: 1 solved, 2 unsolved
Problem ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-05 is UNSAT
FORMULA ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-05 TRUE TECHNIQUES SMT_REFINEMENT
Problem ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-10 is UNSAT
FORMULA ViralEpidemic-PT-S16D2C4A03-ReachabilityCardinality-2024-10 TRUE TECHNIQUES SMT_REFINEMENT
After SMT solving in domain Real declared 164/974 variables, and 115 constraints, problems are : Problem set: 3 solved, 0 unsolved in 152 ms.
Refiners :[Generalized P Invariants (flows): 23/162 constraints, State Equation: 92/567 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints]
After SMT, in 195ms problems are : Problem set: 3 solved, 0 unsolved
Skipping Parikh replay, no witness traces provided.
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 124788 ms.

BK_STOP 1717224891630

--------------------
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
+ 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:
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202405141337.jar
+ VERSION=202405141337
+ echo 'Running Version 202405141337'
+ /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="ViralEpidemic-PT-S16D2C4A03"
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 2-5568"
echo " Executing tool itstools"
echo " Input is ViralEpidemic-PT-S16D2C4A03, 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 r444-smll-171701111500414"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/ViralEpidemic-PT-S16D2C4A03.tgz
mv ViralEpidemic-PT-S16D2C4A03 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.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -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 ;