Execution Chart

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

Trace from the execution

Formatting '/local/x2003239/mcc2020-input.r193-csrt-159033389100628.qcow2', fmt=qcow2 size=4294967296 backing_file=/local/x2003239/mcc2020-input.qcow2 encryption=off 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 itstools
Input is ResAllocation-PT-R002C002, examination is CTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r193-csrt-159033389100628
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 184K
-rw-r--r-- 1 mcc users 3.1K May 14 00:23 CTLCardinality.txt
-rw-r--r-- 1 mcc users 15K May 14 00:23 CTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K May 13 17:33 CTLFireability.txt
-rw-r--r-- 1 mcc users 13K May 13 17:33 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K May 12 20:53 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.3K May 12 20:53 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.5K May 14 10:00 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K May 14 10:00 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.1K May 14 10:00 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K May 14 10:00 LTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K May 13 13:04 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 20K May 13 13:04 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 2.9K May 13 07:32 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 17K May 13 07:32 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K May 13 16:53 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K May 13 16:53 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 12 20:53 equiv_col
-rw-r--r-- 1 mcc users 9 May 12 20:53 instance
-rw-r--r-- 1 mcc users 6 May 12 20:53 iscolored
-rw-r--r-- 1 mcc users 9.5K May 12 20:53 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 ResAllocation-PT-R002C002-CTLFireability-00
FORMULA_NAME ResAllocation-PT-R002C002-CTLFireability-01
FORMULA_NAME ResAllocation-PT-R002C002-CTLFireability-02
FORMULA_NAME ResAllocation-PT-R002C002-CTLFireability-03
FORMULA_NAME ResAllocation-PT-R002C002-CTLFireability-04
FORMULA_NAME ResAllocation-PT-R002C002-CTLFireability-05
FORMULA_NAME ResAllocation-PT-R002C002-CTLFireability-06
FORMULA_NAME ResAllocation-PT-R002C002-CTLFireability-07
FORMULA_NAME ResAllocation-PT-R002C002-CTLFireability-08
FORMULA_NAME ResAllocation-PT-R002C002-CTLFireability-09
FORMULA_NAME ResAllocation-PT-R002C002-CTLFireability-10
FORMULA_NAME ResAllocation-PT-R002C002-CTLFireability-11
FORMULA_NAME ResAllocation-PT-R002C002-CTLFireability-12
FORMULA_NAME ResAllocation-PT-R002C002-CTLFireability-13
FORMULA_NAME ResAllocation-PT-R002C002-CTLFireability-14
FORMULA_NAME ResAllocation-PT-R002C002-CTLFireability-15

=== Now, execution of the tool begins

BK_START 1590538734765

[2020-05-27 00:18:57] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, CTLFireability, -z3path, /home/mcc/BenchKit//z3/bin/z3, -yices2path, /home/mcc/BenchKit//yices/bin/yices, -its, -ltsminpath, /home/mcc/BenchKit//lts_install_dir/, -greatspnpath, /home/mcc/BenchKit//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2020-05-27 00:18:57] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2020-05-27 00:18:57] [INFO ] Load time of PNML (sax parser for PT used): 31 ms
[2020-05-27 00:18:57] [INFO ] Transformed 8 places.
[2020-05-27 00:18:57] [INFO ] Transformed 6 transitions.
[2020-05-27 00:18:57] [INFO ] Found NUPN structural information;
[2020-05-27 00:18:57] [INFO ] Parsed PT model containing 8 places and 6 transitions in 76 ms.
Parsed 16 properties from file /home/mcc/execution/CTLFireability.xml in 20 ms.
Incomplete random walk after 100000 steps, including 16611 resets, run finished after 134 ms. (steps per millisecond=746 ) properties seen :[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0]
// Phase 1: matrix 6 rows 8 cols
[2020-05-27 00:18:57] [INFO ] Computed 4 place invariants in 4 ms
[2020-05-27 00:18:57] [INFO ] [Real]Absence check using 4 positive place invariants in 16 ms returned unsat
Successfully simplified 1 atomic propositions for a total of 1 simplifications.
[2020-05-27 00:18:57] [INFO ] Initial state reduction rules for CTL removed 4 formulas.
[2020-05-27 00:18:57] [INFO ] Flatten gal took : 23 ms
[2020-05-27 00:18:57] [INFO ] Initial state reduction rules for CTL removed 4 formulas.
[2020-05-27 00:18:57] [INFO ] Flatten gal took : 3 ms
FORMULA ResAllocation-PT-R002C002-CTLFireability-15 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA ResAllocation-PT-R002C002-CTLFireability-09 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA ResAllocation-PT-R002C002-CTLFireability-07 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA ResAllocation-PT-R002C002-CTLFireability-06 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2020-05-27 00:18:57] [INFO ] Applying decomposition
[2020-05-27 00:18:57] [INFO ] Flatten gal took : 4 ms
Converted graph to binary with : CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202005100927/bin/convert-linux64, -i, /tmp/graph16825218567119556733.txt, -o, /tmp/graph16825218567119556733.bin, -w, /tmp/graph16825218567119556733.weights], workingDir=null]
Built communities with : CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202005100927/bin/louvain-linux64, /tmp/graph16825218567119556733.bin, -l, -1, -v, -w, /tmp/graph16825218567119556733.weights, -q, 0, -e, 0.001], workingDir=null]
[2020-05-27 00:18:57] [INFO ] Decomposing Gal with order
[2020-05-27 00:18:57] [INFO ] Rewriting arrays to variables to allow decomposition.
[2020-05-27 00:18:58] [INFO ] Flatten gal took : 40 ms
[2020-05-27 00:18:58] [INFO ] Fuse similar labels procedure discarded/fused a total of 0 labels/synchronizations in 1 ms.
[2020-05-27 00:18:58] [INFO ] Time to serialize gal into /home/mcc/execution/CTLFireability.pnml.gal : 2 ms
[2020-05-27 00:18:58] [INFO ] Time to serialize properties into /home/mcc/execution/CTLFireability.ctl : 2 ms
Invoking ITS tools like this :CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202005100927/bin/its-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /home/mcc/execution/CTLFireability.pnml.gal, -t, CGAL, -ctl, /home/mcc/execution/CTLFireability.ctl], workingDir=/home/mcc/execution]

its-ctl command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202005100927/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /home/mcc/execution/CTLFireability.pnml.gal -t CGAL -ctl /home/mcc/execution/CTLFireability.ctl
No direction supplied, using forward translation only.
Parsed 12 CTL formulae.
built 4 ordering constraints for composite.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
reachable,8,0.012087,4172,12,7,39,19,31,24,13,18,0


Converting to forward existential form...Done !
original formula: AF(((((u2.p_1_0==1)||(u0.r_0_0!=1))||(u1.p_0_1==1)) * (EF((u1.p_0_1==1)) + ((u0.r_0_0==1)&&((u2.p_1_0==1)||((u2.r_1_0==1)&&(u3.p_1_1==1)))))))
=> equivalent forward existential formula: [FwdG(Init,!(((((u2.p_1_0==1)||(u0.r_0_0!=1))||(u1.p_0_1==1)) * (E(TRUE U (u1.p_0_1==1)) + ((u0.r_0_0==1)&&((u2.p_1_0==1)||((u2.r_1_0==1)&&(u3.p_1_1==1))))))))] = FALSE
Reverse transition relation is NOT exact ! Due to transitions t_1_0, u1.t_0_2, Intersection with reachable at each step enabled. (destroyed/reverse/intersect/total) :0/4/2/6
Fast SCC detection found an SCC at level 3
(forward)formula 0,0,0.016028,4940,1,0,108,25,134,134,55,26,381
FORMULA ResAllocation-PT-R002C002-CTLFireability-00 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !

***************************************

original formula: EX(EG(AF(((u0.p_0_0==1)&&(u1.r_0_1==1)))))
=> equivalent forward existential formula: [FwdG(EY(Init),!(EG(!(((u0.p_0_0==1)&&(u1.r_0_1==1))))))] != FALSE
(forward)formula 1,0,0.017084,4940,1,0,131,25,147,176,55,26,562
FORMULA ResAllocation-PT-R002C002-CTLFireability-01 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !

***************************************

original formula: EX(AF((u1.p_0_1==1)))
=> equivalent forward existential formula: [(EY(Init) * !(EG(!((u1.p_0_1==1)))))] != FALSE
(forward)formula 2,0,0.017997,4940,1,0,142,25,161,207,56,26,669
FORMULA ResAllocation-PT-R002C002-CTLFireability-02 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !

***************************************

original formula: A(((((u0.r_0_0==1)&&(u2.r_1_0==1))&&(u3.p_1_1==1))&&((u1.r_0_1!=1)||(u3.r_1_1!=1))) U AF(((u2.p_1_0==1)||((u0.p_0_0==1)&&(u1.r_0_1==1)))))
=> equivalent forward existential formula: [((Init * !(EG(!(!(EG(!(((u2.p_1_0==1)||((u0.p_0_0==1)&&(u1.r_0_1==1)))))))))) * !(E(!(!(EG(!(((u2.p_1_0==1)||((u0.p_0_0==1)&&(u1.r_0_1==1))))))) U (!(((((u0.r_0_0==1)&&(u2.r_1_0==1))&&(u3.p_1_1==1))&&((u1.r_0_1!=1)||(u3.r_1_1!=1)))) * !(!(EG(!(((u2.p_1_0==1)||((u0.p_0_0==1)&&(u1.r_0_1==1)))))))))))] != FALSE
(forward)formula 3,0,0.020988,4940,1,0,158,25,189,261,57,26,847
FORMULA ResAllocation-PT-R002C002-CTLFireability-03 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !

***************************************

original formula: A(EX((((u1.r_0_1==1)&&(u3.r_1_1==1))&&(u0.r_0_0==1))) U AF((u0.r_0_0!=1)))
=> equivalent forward existential formula: [((Init * !(EG(!(!(EG(!((u0.r_0_0!=1)))))))) * !(E(!(!(EG(!((u0.r_0_0!=1))))) U (!(EX((((u1.r_0_1==1)&&(u3.r_1_1==1))&&(u0.r_0_0==1)))) * !(!(EG(!((u0.r_0_0!=1)))))))))] != FALSE
(forward)formula 4,1,0.021937,4940,1,0,158,25,209,265,57,26,865
FORMULA ResAllocation-PT-R002C002-CTLFireability-04 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !

***************************************

original formula: (!(EF(AX(((u1.r_0_1==1)&&(u3.r_1_1==1))))) + !(AF((u0.r_0_0==1))))
=> equivalent forward existential formula: [(FwdU((Init * !(!(!(EG(!((u0.r_0_0==1))))))),TRUE) * !(EX(!(((u1.r_0_1==1)&&(u3.r_1_1==1))))))] = FALSE
(forward)formula 5,0,0.023104,4940,1,0,177,25,235,312,59,27,1092
FORMULA ResAllocation-PT-R002C002-CTLFireability-05 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !

***************************************

original formula: EF(!(EF((u0.r_0_0==1))))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * !(E(TRUE U (u0.r_0_0==1))))] != FALSE
(forward)formula 6,1,0.023418,4940,1,0,178,25,235,318,59,27,1104
FORMULA ResAllocation-PT-R002C002-CTLFireability-08 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !

***************************************

original formula: EF(!(EF(((u1.r_0_1==1)&&(u3.r_1_1==1)))))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * !(E(TRUE U ((u1.r_0_1==1)&&(u3.r_1_1==1)))))] != FALSE
(forward)formula 7,1,0.02388,4940,1,0,178,25,235,319,59,27,1108
FORMULA ResAllocation-PT-R002C002-CTLFireability-10 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !

***************************************

original formula: !(AF(AX(((((u1.r_0_1==1)&&(u3.r_1_1==1))&&(u1.r_0_1==1))&&(u3.r_1_1==1)))))
=> equivalent forward existential formula: [FwdG(Init,!(!(EX(!(((((u1.r_0_1==1)&&(u3.r_1_1==1))&&(u1.r_0_1==1))&&(u3.r_1_1==1)))))))] != FALSE
(forward)formula 8,1,0.024658,4940,1,0,184,25,241,344,59,27,1162
FORMULA ResAllocation-PT-R002C002-CTLFireability-11 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !

***************************************

original formula: (EX((EF(((u1.r_0_1==1)&&(u3.r_1_1==1))) * (u2.p_1_0==1))) * (EX(EF((((u0.r_0_0==1)&&(u2.r_1_0==1))&&(u3.p_1_1==1)))) + EX(((((u1.r_0_1==1)&&(u3.r_1_1==1))||(u0.r_0_0==1))||((((((u0.r_0_0==1)&&(u2.r_1_0==1))&&(u3.p_1_1==1))&&(u0.r_0_0==1))&&(u2.r_1_0==1))&&(u3.p_1_1==1))))))
=> equivalent forward existential formula: ([(FwdU(EY((Init * EX((E(TRUE U ((u1.r_0_1==1)&&(u3.r_1_1==1))) * (u2.p_1_0==1))))),TRUE) * (((u0.r_0_0==1)&&(u2.r_1_0==1))&&(u3.p_1_1==1)))] != FALSE + [(EY((Init * EX((E(TRUE U ((u1.r_0_1==1)&&(u3.r_1_1==1))) * (u2.p_1_0==1))))) * ((((u1.r_0_1==1)&&(u3.r_1_1==1))||(u0.r_0_0==1))||((((((u0.r_0_0==1)&&(u2.r_1_0==1))&&(u3.p_1_1==1))&&(u0.r_0_0==1))&&(u2.r_1_0==1))&&(u3.p_1_1==1))))] != FALSE)
(forward)formula 9,0,0.027355,4940,1,0,187,25,251,353,59,27,1200
FORMULA ResAllocation-PT-R002C002-CTLFireability-12 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !

***************************************

original formula: AX(((!(AG((((u0.r_0_0==1)&&(u2.r_1_0==1))&&(u3.p_1_1==1)))) * AG((u2.p_1_0==1))) * EF((u1.p_0_1==1))))
=> equivalent forward existential formula: (([(EY(Init) * !(E(TRUE U !((((u0.r_0_0==1)&&(u2.r_1_0==1))&&(u3.p_1_1==1))))))] = FALSE * [(FwdU(EY(Init),TRUE) * !((u2.p_1_0==1)))] = FALSE) * [(EY(Init) * !(E(TRUE U (u1.p_0_1==1))))] = FALSE)
(forward)formula 10,0,0.027834,4940,1,0,187,25,252,357,59,27,1216
FORMULA ResAllocation-PT-R002C002-CTLFireability-13 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !

***************************************

original formula: !(AG(EX((u0.r_0_0==1))))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * !(EX((u0.r_0_0==1))))] != FALSE
(forward)formula 11,1,0.02806,4940,1,0,188,25,252,359,59,27,1216
FORMULA ResAllocation-PT-R002C002-CTLFireability-14 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !

***************************************


BK_STOP 1590538738296

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

+ export BINDIR=/home/mcc/BenchKit/
+ BINDIR=/home/mcc/BenchKit/
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ CTLFireability = StateSpace ]]
+ /home/mcc/BenchKit//runeclipse.sh /home/mcc/execution CTLFireability -its -ltsminpath /home/mcc/BenchKit//lts_install_dir/ -greatspnpath /home/mcc/BenchKit//greatspn/ -order META -manyOrder -smt -timeout 3600
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
+ /home/mcc/BenchKit//itstools/its-tools -data /home/mcc/execution/workspace -pnfolder /home/mcc/execution -examination CTLFireability -z3path /home/mcc/BenchKit//z3/bin/z3 -yices2path /home/mcc/BenchKit//yices/bin/yices -its -ltsminpath /home/mcc/BenchKit//lts_install_dir/ -greatspnpath /home/mcc/BenchKit//greatspn/ -order META -manyOrder -smt -timeout 3600 -vmargs -Dosgi.locking=none -Declipse.stateSaveDelayInterval=-1 -Dosgi.configuration.area=/tmp/.eclipse -Xss128m -Xms40m -Xmx16000m -Dfile.encoding=UTF-8 -Dosgi.requiredJavaVersion=1.6

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="ResAllocation-PT-R002C002"
export BK_EXAMINATION="CTLFireability"
export BK_TOOL="itstools"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"

# 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 itstools"
echo " Input is ResAllocation-PT-R002C002, examination is CTLFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r193-csrt-159033389100628"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/ResAllocation-PT-R002C002.tgz
mv ResAllocation-PT-R002C002 execution
cd execution
if [ "CTLFireability" = "ReachabilityDeadlock" ] || [ "CTLFireability" = "UpperBounds" ] || [ "CTLFireability" = "QuasiLiveness" ] || [ "CTLFireability" = "StableMarking" ] || [ "CTLFireability" = "Liveness" ] || [ "CTLFireability" = "OneSafe" ] || [ "CTLFireability" = "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 [ "CTLFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "CTLFireability" != "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 "CTLFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property CTLFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "CTLFireability.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 '' CTLFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "CTLFireability" = "ReachabilityDeadlock" ] || [ "CTLFireability" = "QuasiLiveness" ] || [ "CTLFireability" = "StableMarking" ] || [ "CTLFireability" = "Liveness" ] || [ "CTLFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME CTLFireability"
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 ;