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.r146-tall-177961074200447.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 GPUForwardProgress-PT-20a, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r146-tall-177961074200447
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 540K
-rw-r--r-- 1 mcc users 5.5K Mar 7 11:34 CTLCardinality.txt
-rw-r--r-- 1 mcc users 55K Mar 7 11:34 CTLCardinality.xml
-rw-r--r-- 1 mcc users 7.5K Mar 7 11:32 CTLFireability.txt
-rw-r--r-- 1 mcc users 73K Mar 7 11:32 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.9K Mar 15 10:37 LTLCardinality.txt
-rw-r--r-- 1 mcc users 29K Mar 15 10:37 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K Mar 15 10:37 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K Mar 15 10:37 LTLFireability.xml
-rw-r--r-- 1 mcc users 13K Mar 7 11:34 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 146K Mar 7 11:34 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 12K Mar 7 11:34 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 103K Mar 7 11:34 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Mar 15 10:37 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Mar 15 10:37 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 4 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 32K 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 GPUForwardProgress-PT-20a-ReachabilityFireability-2024-00
FORMULA_NAME GPUForwardProgress-PT-20a-ReachabilityFireability-2024-01
FORMULA_NAME GPUForwardProgress-PT-20a-ReachabilityFireability-2024-02
FORMULA_NAME GPUForwardProgress-PT-20a-ReachabilityFireability-2024-03
FORMULA_NAME GPUForwardProgress-PT-20a-ReachabilityFireability-2024-04
FORMULA_NAME GPUForwardProgress-PT-20a-ReachabilityFireability-2024-05
FORMULA_NAME GPUForwardProgress-PT-20a-ReachabilityFireability-2024-06
FORMULA_NAME GPUForwardProgress-PT-20a-ReachabilityFireability-2024-07
FORMULA_NAME GPUForwardProgress-PT-20a-ReachabilityFireability-2024-08
FORMULA_NAME GPUForwardProgress-PT-20a-ReachabilityFireability-2024-09
FORMULA_NAME GPUForwardProgress-PT-20a-ReachabilityFireability-2024-10
FORMULA_NAME GPUForwardProgress-PT-20a-ReachabilityFireability-2024-11
FORMULA_NAME GPUForwardProgress-PT-20a-ReachabilityFireability-2024-12
FORMULA_NAME GPUForwardProgress-PT-20a-ReachabilityFireability-2024-13
FORMULA_NAME GPUForwardProgress-PT-20a-ReachabilityFireability-2024-14
FORMULA_NAME GPUForwardProgress-PT-20a-ReachabilityFireability-2024-15

=== Now, execution of the tool begins

BK_START 1779727484192

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=ReachabilityFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=GPUForwardProgress-PT-20a
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
ReachabilityFireability PT
Running Version 202604301425
[2026-05-25 16:44:45] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityFireability, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2026-05-25 16:44:45] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-25 16:44:45] [INFO ] Load time of PNML (sax parser for PT used): 54 ms
[2026-05-25 16:44:45] [INFO ] Transformed 88 places.
[2026-05-25 16:44:45] [INFO ] Transformed 109 transitions.
[2026-05-25 16:44:45] [INFO ] Found NUPN structural information;
[2026-05-25 16:44:45] [INFO ] Parsed PT model containing 88 places and 109 transitions and 421 arcs in 140 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 17 ms.
Working with output stream class java.io.PrintStream
Initial state reduction rules removed 1 formulas.
Ensure Unique test removed 22 transitions
Reduce redundant transitions removed 22 transitions.
FORMULA GPUForwardProgress-PT-20a-ReachabilityFireability-2024-10 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA GPUForwardProgress-PT-20a-ReachabilityFireability-2024-14 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2026-05-25 16:44:45] [INFO ] Flatten gal took : 56 ms
[2026-05-25 16:44:46] [INFO ] Flatten gal took : 30 ms
[2026-05-25 16:44:46] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality2008648245698072425.gal : 35 ms
RANDOM walk for 40000 steps (132 resets) in 1820 ms. (21 steps per ms) remains 7/14 properties
FORMULA GPUForwardProgress-PT-20a-ReachabilityFireability-2024-15 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA GPUForwardProgress-PT-20a-ReachabilityFireability-2024-13 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA GPUForwardProgress-PT-20a-ReachabilityFireability-2024-06 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA GPUForwardProgress-PT-20a-ReachabilityFireability-2024-05 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA GPUForwardProgress-PT-20a-ReachabilityFireability-2024-04 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA GPUForwardProgress-PT-20a-ReachabilityFireability-2024-03 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA GPUForwardProgress-PT-20a-ReachabilityFireability-2024-02 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
[2026-05-25 16:44:46] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality10716090642144684928.prop : 8 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality2008648245698072425.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality10716090642144684928.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
Loading property file /tmp/ReachabilityCardinality10716090642144684928.prop.
Reachability property GPUForwardProgress-PT-20a-ReachabilityFireability-2024-13 is true.
SDD proceeding with computation,13 properties remain. new max is 2
BEST_FIRST walk for 40002 steps (8 resets) in 486 ms. (82 steps per ms) remains 7/7 properties
SDD size :22 after 24
Reachability property GPUForwardProgress-PT-20a-ReachabilityFireability-2024-15 is true.
SDD proceeding with computation,12 properties remain. new max is 2
SDD size :24 after 27
SDD proceeding with computation,12 properties remain. new max is 4
SDD size :27 after 30
SDD proceeding with computation,12 properties remain. new max is 8
SDD size :30 after 35
SDD proceeding with computation,12 properties remain. new max is 16
SDD size :35 after 43
BEST_FIRST walk for 40004 steps (8 resets) in 248 ms. (160 steps per ms) remains 7/7 properties
SDD proceeding with computation,12 properties remain. new max is 32
SDD size :755 after 965
BEST_FIRST walk for 40004 steps (8 resets) in 345 ms. (115 steps per ms) remains 7/7 properties
Reachability property GPUForwardProgress-PT-20a-ReachabilityFireability-2024-06 is true.
BEST_FIRST walk for 40004 steps (8 resets) in 832 ms. (48 steps per ms) remains 7/7 properties
BEST_FIRST walk for 40003 steps (8 resets) in 191 ms. (208 steps per ms) remains 6/7 properties
FORMULA GPUForwardProgress-PT-20a-ReachabilityFireability-2024-09 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
Invariant property GPUForwardProgress-PT-20a-ReachabilityFireability-2024-04 does not hold.
Reachability property GPUForwardProgress-PT-20a-ReachabilityFireability-2024-03 is true.
BEST_FIRST walk for 40003 steps (8 resets) in 215 ms. (185 steps per ms) remains 6/6 properties
BEST_FIRST walk for 40004 steps (8 resets) in 102 ms. (388 steps per ms) remains 6/6 properties
Reachability property GPUForwardProgress-PT-20a-ReachabilityFireability-2024-02 is true.
SDD proceeding with computation,8 properties remain. new max is 32
SDD size :12385 after 14494
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-3297407823338640249.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-12185582718845010952.kers'
[2026-05-25 16:44:46] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-3297407823338640249.kers, --Pflows, --basisKERS=/tmp/petrispot-output-12185582718845010952.kers]
Normalized transition count is 86 out of 87 initially.
Culling duplicate invariants (modulo rational): removing 1 columns.
Culled 1 columns in 0 ms.
// Phase 1: matrix 86 rows 87 cols 333 entries
Finished phase 1 with 65 SingleSign rule and 1 generalized
[2026-05-25 16:44:46] [INFO ] Computed 22 invariants in 0 ms
Computed 22 P flows in 1 ms.
Exported basis to /tmp/petrispot-output-12185582718845010952.kers
Total runtime 1 ms.
[2026-05-25 16:44:46] [INFO ] State equation strengthened by 21 read => feed constraints.
Excessive predecessor constraint size, skipping predecessor.
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/79 variables, 79/79 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/79 variables, 1/80 constraints. Problems are: Problem set: 0 solved, 6 unsolved
SDD proceeding with computation,8 properties remain. new max is 64
SDD size :14494 after 14685
At refinement iteration 2 (INCLUDED_ONLY) 0/79 variables, 0/80 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 3 (OVERLAPS) 9/88 variables, 21/101 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/88 variables, 9/110 constraints. Problems are: Problem set: 0 solved, 6 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/88 variables, 0/110 constraints. Problems are: Problem set: 0 solved, 6 unsolved
Problem GPUForwardProgress-PT-20a-ReachabilityFireability-2024-01 is UNSAT
FORMULA GPUForwardProgress-PT-20a-ReachabilityFireability-2024-01 FALSE TECHNIQUES SMT_REFINEMENT
Problem GPUForwardProgress-PT-20a-ReachabilityFireability-2024-11 is UNSAT
FORMULA GPUForwardProgress-PT-20a-ReachabilityFireability-2024-11 FALSE TECHNIQUES SMT_REFINEMENT
At refinement iteration 6 (OVERLAPS) 86/174 variables, 88/198 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/174 variables, 20/218 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/174 variables, 0/218 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 9 (OVERLAPS) 1/175 variables, 1/219 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/175 variables, 0/219 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 11 (OVERLAPS) 0/175 variables, 0/219 constraints. Problems are: Problem set: 2 solved, 4 unsolved
No progress, stopping.
After SMT solving in domain Real declared 175/175 variables, and 219 constraints, problems are : Problem set: 2 solved, 4 unsolved in 627 ms.
Refiners :[Domain max(s): 88/88 constraints, Generalized P Invariants (flows): 22/22 constraints, State Equation: 88/88 constraints, ReadFeed: 21/21 constraints, PredecessorRefiner: 6/4 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 2 solved, 4 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/42 variables, 42/42 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/42 variables, 0/42 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 2 (OVERLAPS) 44/86 variables, 21/63 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/86 variables, 44/107 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/86 variables, 0/107 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 5 (OVERLAPS) 1/87 variables, 1/108 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/87 variables, 1/109 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/87 variables, 0/109 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 8 (OVERLAPS) 86/173 variables, 87/196 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/173 variables, 20/216 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/173 variables, 3/219 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/173 variables, 0/219 constraints. Problems are: Problem set: 2 solved, 4 unsolved
Problem GPUForwardProgress-PT-20a-ReachabilityFireability-2024-00 is UNSAT
FORMULA GPUForwardProgress-PT-20a-ReachabilityFireability-2024-00 TRUE TECHNIQUES SMT_REFINEMENT
Problem GPUForwardProgress-PT-20a-ReachabilityFireability-2024-07 is UNSAT
FORMULA GPUForwardProgress-PT-20a-ReachabilityFireability-2024-07 TRUE TECHNIQUES SMT_REFINEMENT
Problem GPUForwardProgress-PT-20a-ReachabilityFireability-2024-12 is UNSAT
FORMULA GPUForwardProgress-PT-20a-ReachabilityFireability-2024-12 TRUE TECHNIQUES SMT_REFINEMENT
At refinement iteration 12 (OVERLAPS) 1/174 variables, 1/220 constraints. Problems are: Problem set: 5 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/174 variables, 1/221 constraints. Problems are: Problem set: 5 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/174 variables, 0/221 constraints. Problems are: Problem set: 5 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 1/175 variables, 1/222 constraints. Problems are: Problem set: 5 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/175 variables, 0/222 constraints. Problems are: Problem set: 5 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 0/175 variables, 0/222 constraints. Problems are: Problem set: 5 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 175/175 variables, and 222 constraints, problems are : Problem set: 5 solved, 1 unsolved in 818 ms.
Refiners :[Domain max(s): 88/88 constraints, Generalized P Invariants (flows): 22/22 constraints, State Equation: 88/88 constraints, ReadFeed: 21/21 constraints, PredecessorRefiner: 4/4 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 1555ms problems are : Problem set: 5 solved, 1 unsolved
Finished Parikh walk after 36 steps, including 0 resets, run visited all 1 properties in 1 ms. (steps per millisecond=36 )
FORMULA GPUForwardProgress-PT-20a-ReachabilityFireability-2024-08 TRUE TECHNIQUES PARIKH_WALK
Parikh walk visited 1 properties in 4 ms.
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 3172 ms.

BK_STOP 1779727488535

--------------------
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
+ [[ ReachabilityFireability = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution ReachabilityFireability -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
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202604301425.jar
+ VERSION=202604301425
+ echo 'Running Version 202604301425'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination ReachabilityFireability -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="GPUForwardProgress-PT-20a"
export BK_EXAMINATION="ReachabilityFireability"
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 GPUForwardProgress-PT-20a, 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 r146-tall-177961074200447"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/GPUForwardProgress-PT-20a.tgz
mv GPUForwardProgress-PT-20a 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.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 ;