Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2026-input.r210-smll-177969942000188.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2026-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 2-5973
Executing tool itstools
Input is Philosophers-PT-010000, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r210-smll-177969942000188
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 325M
-rw-r--r-- 1 mcc users 9.1M Mar 5 11:32 CTLCardinality.txt
-rw-r--r-- 1 mcc users 45M Mar 5 11:32 CTLCardinality.xml
-rw-r--r-- 1 mcc users 4.6M Mar 5 11:18 CTLFireability.txt
-rw-r--r-- 1 mcc users 27M Mar 5 11:17 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Mar 3 18:30 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.8K Mar 3 18:30 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 5.6M Mar 16 08:38 LTLCardinality.txt
-rw-r--r-- 1 mcc users 21M Mar 16 08:38 LTLCardinality.xml
-rw-r--r-- 1 mcc users 3.3M Mar 16 08:38 LTLFireability.txt
-rw-r--r-- 1 mcc users 15M Mar 16 08:38 LTLFireability.xml
-rw-r--r-- 1 mcc users 15M Mar 5 12:22 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 73M Mar 5 12:22 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 13M Mar 5 11:58 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 73M Mar 5 11:58 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1019K Mar 16 08:38 UpperBounds.txt
-rw-r--r-- 1 mcc users 2.6M Mar 16 08:38 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 7 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 22M Mar 3 18:30 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 Philosophers-PT-010000-LTLFireability-00
FORMULA_NAME Philosophers-PT-010000-LTLFireability-01
FORMULA_NAME Philosophers-PT-010000-LTLFireability-02
FORMULA_NAME Philosophers-PT-010000-LTLFireability-03
FORMULA_NAME Philosophers-PT-010000-LTLFireability-04
FORMULA_NAME Philosophers-PT-010000-LTLFireability-05
FORMULA_NAME Philosophers-PT-010000-LTLFireability-06
FORMULA_NAME Philosophers-PT-010000-LTLFireability-07
FORMULA_NAME Philosophers-PT-010000-LTLFireability-08
FORMULA_NAME Philosophers-PT-010000-LTLFireability-09
FORMULA_NAME Philosophers-PT-010000-LTLFireability-10
FORMULA_NAME Philosophers-PT-010000-LTLFireability-11
FORMULA_NAME Philosophers-PT-010000-LTLFireability-12
FORMULA_NAME Philosophers-PT-010000-LTLFireability-13
FORMULA_NAME Philosophers-PT-010000-LTLFireability-14
FORMULA_NAME Philosophers-PT-010000-LTLFireability-15

=== Now, execution of the tool begins

BK_START 1779924532502

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=LTLFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=Philosophers-PT-010000
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
LTLFireability PT
Running Version 202604301425
[2026-05-27 23:28:54] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, LTLFireability, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2026-05-27 23:28:54] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-27 23:28:56] [INFO ] Load time of PNML (sax parser for PT used): 1886 ms
[2026-05-27 23:28:56] [INFO ] Transformed 50000 places.
[2026-05-27 23:28:56] [INFO ] Transformed 50000 transitions.
[2026-05-27 23:28:57] [INFO ] Parsed PT model containing 50000 places and 50000 transitions and 160000 arcs in 2467 ms.
Parsed 16 properties from file /home/mcc/execution/LTLFireability.xml in 510 ms.
Working with output stream class java.io.PrintStream
Initial state reduction rules removed 2 formulas.
FORMULA Philosophers-PT-010000-LTLFireability-03 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Philosophers-PT-010000-LTLFireability-05 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Support contains 50000 out of 50000 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 50000/50000 places, 50000/50000 transitions.
Applied a total of 0 rules in 265 ms. Remains 50000 /50000 variables (removed 0) and now considering 50000/50000 (removed 0) transitions.
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-5074092112805799289.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-6459927515408840639.kers'
[2026-05-27 23:30:09] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-5074092112805799289.kers, --Pflows, --basisKERS=/tmp/petrispot-output-6459927515408840639.kers]
Culled 0 columns in 87 ms.
// Phase 1: matrix 50000 rows 50000 cols 160000 entries
Finished phase 1 with 30000 SingleSign rule and 0 generalized
[2026-05-27 23:30:09] [INFO ] Computed 20000 invariants in 359 ms
Computed 20000 P flows in 364 ms.
Exported basis to /tmp/petrispot-output-6459927515408840639.kers
Total runtime 411 ms.
[2026-05-27 23:30:58] [INFO ] Implicit Places using invariants in 49230 ms returned []
Implicit Place search using SMT only with invariants took 49288 ms to find 0 implicit places.
Running 30000 sub problems to find dead transitions.
[2026-05-27 23:30:59] [INFO ] Invariant cache hit.
SMT process timed out in 229535ms, After SMT, problems are : Problem set: 0 solved, 30000 unsolved
Search for dead transitions found 0 dead transitions in 229911ms
Finished structural reductions in LTL mode , in 1 iterations and 279799 ms. Remains : 50000/50000 places, 50000/50000 transitions.
Starting structural reductions in LTL mode, iteration 0 : 50000/50000 places, 50000/50000 transitions.
Applied a total of 0 rules in 175 ms. Remains 50000 /50000 variables (removed 0) and now considering 50000/50000 (removed 0) transitions.
[2026-05-27 23:34:48] [INFO ] Invariant cache hit.
[2026-05-27 23:35:35] [INFO ] Implicit Places using invariants in 46206 ms returned []
Implicit Place search using SMT only with invariants took 46216 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 46398 ms. Remains : 50000/50000 places, 50000/50000 transitions.
Support contains 50000 out of 50000 places after structural reductions.
[2026-05-27 23:35:40] [INFO ] Flatten gal took : 2599 ms
[2026-05-27 23:35:43] [INFO ] Flatten gal took : 2405 ms
[2026-05-27 23:35:48] [INFO ] Input system was already deterministic with 50000 transitions.
Reduction of identical properties reduced properties to check from 27 to 26
RANDOM walk for 30298 steps (8 resets) in 120008 ms. (0 steps per ms) remains 9/26 properties
BEST_FIRST walk for 8004 steps (0 resets) in 29710 ms. (0 steps per ms) remains 9/9 properties
BEST_FIRST walk for 8004 steps (0 resets) in 27530 ms. (0 steps per ms) remains 9/9 properties
BEST_FIRST walk for 30004 steps (0 resets) in 21025 ms. (1 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40004 steps (0 resets) in 19357 ms. (2 steps per ms) remains 9/9 properties
BEST_FIRST walk for 30004 steps (0 resets) in 21364 ms. (1 steps per ms) remains 9/9 properties
BEST_FIRST walk for 35004 steps (0 resets) in 21338 ms. (1 steps per ms) remains 9/9 properties
BEST_FIRST walk for 27004 steps (0 resets) in 28214 ms. (0 steps per ms) remains 9/9 properties
BEST_FIRST walk for 26004 steps (0 resets) in 21138 ms. (1 steps per ms) remains 9/9 properties
BEST_FIRST walk for 26004 steps (0 resets) in 25444 ms. (1 steps per ms) remains 9/9 properties
[2026-05-27 23:37:16] [INFO ] Invariant cache hit.
Excessive predecessor constraint size, skipping predecessor.
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 20007/100000 variables, and 0 constraints, problems are : Problem set: 0 solved, 9 unsolved in 5284 ms.
Refiners :[Positive P Invariants (semi-flows): 0/20000 constraints, State Equation: 0/50000 constraints, PredecessorRefiner: 9/7 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 9 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 20007/100000 variables, and 0 constraints, problems are : Problem set: 0 solved, 9 unsolved in 5043 ms.
Refiners :[Positive P Invariants (semi-flows): 0/20000 constraints, State Equation: 0/50000 constraints, PredecessorRefiner: 2/7 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 15378ms problems are : Problem set: 0 solved, 9 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 20007 out of 50000 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50000/50000 places, 50000/50000 transitions.
Applied a total of 0 rules in 2226 ms. Remains 50000 /50000 variables (removed 0) and now considering 50000/50000 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 2236 ms. Remains : 50000/50000 places, 50000/50000 transitions.
FORMULA Philosophers-PT-010000-LTLFireability-01 FALSE TECHNIQUES REACHABILITY_KNOWLEDGE
Computed a total of 0 stabilizing places and 0 stable transitions
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(((X(X(p0)) U X(p1))||(G(!p0)&&p0))))'
Support contains 30000 out of 50000 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 50000/50000 places, 50000/50000 transitions.
Applied a total of 0 rules in 154 ms. Remains 50000 /50000 variables (removed 0) and now considering 50000/50000 (removed 0) transitions.
[2026-05-27 23:38:19] [INFO ] Invariant cache hit.
[2026-05-27 23:39:39] [INFO ] Performed 24305/50000 implicitness test of which 0 returned IMPLICIT in 30 seconds.
[2026-05-27 23:40:09] [INFO ] Performed 28338/50000 implicitness test of which 0 returned IMPLICIT in 60 seconds.
[2026-05-27 23:40:21] [INFO ] Implicit Places using invariants in 122701 ms returned []
Implicit Place search using SMT only with invariants took 122704 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 122867 ms. Remains : 50000/50000 places, 50000/50000 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(((X(X(p0)) U X(p1))||(G(!p0)&&p0))))'
Stuttering acceptance computed with spot in 483 ms :[(NOT p1), (OR (NOT p0) (NOT p1)), (NOT p1), (NOT p1), true]
Running random walk in product with property : Philosophers-PT-010000-LTLFireability-00
Product exploration timeout after 2800 steps with 814 reset in 10054 ms.
Product exploration timeout after 2850 steps with 799 reset in 10012 ms.
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Knowledge based reduction with 1 factoid took 92 ms. Reduced automaton from 5 states, 6 edges and 2 AP (stutter sensitive) to 5 states, 6 edges and 2 AP (stutter sensitive).
RANDOM walk for 25956 steps (6 resets) in 120012 ms. (0 steps per ms) remains 1/3 properties
BEST_FIRST walk for 8004 steps (0 resets) in 39291 ms. (0 steps per ms) remains 1/1 properties
[2026-05-27 23:41:37] [INFO ] Invariant cache hit.
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 20000/100000 variables, and 0 constraints, problems are : Problem set: 0 solved, 1 unsolved in 5013 ms.
Refiners :[Positive P Invariants (semi-flows): 0/20000 constraints, State Equation: 0/50000 constraints, PredecessorRefiner: 1/0 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 20000/100000 variables, and 0 constraints, problems are : Problem set: 0 solved, 1 unsolved in 5006 ms.
Refiners :[Positive P Invariants (semi-flows): 0/20000 constraints, State Equation: 0/50000 constraints, PredecessorRefiner: 1/0 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 10593ms problems are : Problem set: 0 solved, 1 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 20000 out of 50000 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50000/50000 places, 50000/50000 transitions.
Applied a total of 0 rules in 685 ms. Remains 50000 /50000 variables (removed 0) and now considering 50000/50000 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 688 ms. Remains : 50000/50000 places, 50000/50000 transitions.
RANDOM walk for 30442 steps (8 resets) in 120014 ms. (0 steps per ms) remains 1/1 properties
BEST_FIRST walk for 5004 steps (0 resets) in 22375 ms. (0 steps per ms) remains 1/1 properties
Probabilistic random walk exhausted memory after 104959 steps, saw 104950 distinct states, run finished after 254374 ms. (steps per millisecond=0 ) properties seen :0
[2026-05-27 23:46:43] [INFO ] Invariant cache hit.
At refinement iteration 0 (INCLUDED_ONLY) 0/20000 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 50000/100000 variables, and 20000 constraints, problems are : Problem set: 0 solved, 1 unsolved in 41430 ms.
Refiners :[Positive P Invariants (semi-flows): 20000/20000 constraints, State Equation: 0/50000 constraints, PredecessorRefiner: 1/0 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/20000 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 50000/100000 variables, and 20000 constraints, problems are : Problem set: 0 solved, 1 unsolved in 41647 ms.
Refiners :[Positive P Invariants (semi-flows): 20000/20000 constraints, State Equation: 0/50000 constraints, PredecessorRefiner: 1/0 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 85903ms problems are : Problem set: 0 solved, 1 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 20000 out of 50000 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50000/50000 places, 50000/50000 transitions.
Applied a total of 0 rules in 515 ms. Remains 50000 /50000 variables (removed 0) and now considering 50000/50000 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 516 ms. Remains : 50000/50000 places, 50000/50000 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50000/50000 places, 50000/50000 transitions.
Applied a total of 0 rules in 473 ms. Remains 50000 /50000 variables (removed 0) and now considering 50000/50000 (removed 0) transitions.
[2026-05-27 23:48:10] [INFO ] Invariant cache hit.
[2026-05-27 23:49:38] [INFO ] Performed 24255/50000 implicitness test of which 0 returned IMPLICIT in 30 seconds.
[2026-05-27 23:50:08] [INFO ] Performed 28629/50000 implicitness test of which 0 returned IMPLICIT in 60 seconds.
[2026-05-27 23:50:38] [INFO ] Performed 32878/50000 implicitness test of which 0 returned IMPLICIT in 90 seconds.
[2026-05-27 23:50:50] [INFO ] Implicit Places with SMT raised an exceptionSMT solver raised an error when submitting script. Raised (error "Timeout of Z3 solver reached")... after 160053 ms
Implicit Place search using SMT only with invariants took 160067 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 160563 ms. Remains : 50000/50000 places, 50000/50000 transitions.
Knowledge based reduction with 1 factoid took 179 ms. Reduced automaton from 5 states, 6 edges and 2 AP (stutter sensitive) to 5 states, 6 edges and 2 AP (stutter sensitive).
Stuttering acceptance computed with spot in 234 ms :[(NOT p1), (OR (NOT p0) (NOT p1)), (NOT p1), (NOT p1), true]

BK_TIME_CONFINEMENT_REACHED

--------------------
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
+ [[ LTLFireability = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution LTLFireability -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
++ perl -pe 's/.*\.//g'
++ sed s/.jar//
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202604301425.jar
+ VERSION=202604301425
+ echo 'Running Version 202604301425'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination LTLFireability -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="Philosophers-PT-010000"
export BK_EXAMINATION="LTLFireability"
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 2-5973"
echo " Executing tool itstools"
echo " Input is Philosophers-PT-010000, examination is LTLFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r210-smll-177969942000188"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/Philosophers-PT-010000.tgz
mv Philosophers-PT-010000 execution
cd execution
if [ "LTLFireability" = "ReachabilityDeadlock" ] || [ "LTLFireability" = "UpperBounds" ] || [ "LTLFireability" = "QuasiLiveness" ] || [ "LTLFireability" = "StableMarking" ] || [ "LTLFireability" = "Liveness" ] || [ "LTLFireability" = "OneSafe" ] || [ "LTLFireability" = "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 [ "LTLFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "LTLFireability" != "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 "LTLFireability.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 '' LTLFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "LTLFireability" = "ReachabilityDeadlock" ] || [ "LTLFireability" = "QuasiLiveness" ] || [ "LTLFireability" = "StableMarking" ] || [ "LTLFireability" = "Liveness" ] || [ "LTLFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME LTLFireability"
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 ;