Execution Chart

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

Trace from the execution

Formatting '/mnt/tpsp/fkordon/mcc2020-input.r051-ebro-158902545900235.qcow2', fmt=qcow2 size=4294967296 backing_file='/mnt/tpsp/fkordon/mcc2020-input.qcow2' encryption=off cluster_size=65536 lazy_refcounts=off
Waiting for the VM to be ready (probing ssh)
.................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
=====================================================================
Generated by BenchKit 2-4028
Executing tool itstools
Input is DES-PT-05b, examination is CTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r051-ebro-158902545900235
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 252K
-rw-r--r-- 1 mcc users 3.0K Mar 30 01:52 CTLCardinality.txt
-rw-r--r-- 1 mcc users 18K Mar 30 01:52 CTLCardinality.xml
-rw-r--r-- 1 mcc users 2.5K Mar 28 16:17 CTLFireability.txt
-rw-r--r-- 1 mcc users 19K Mar 28 16:17 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K Mar 24 05:37 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.1K Mar 24 05:37 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.1K Apr 8 14:47 LTLCardinality.txt
-rw-r--r-- 1 mcc users 22K Apr 28 14:00 LTLCardinality.xml
-rw-r--r-- 1 mcc users 1.8K Apr 8 14:47 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Apr 28 14:00 LTLFireability.xml
-rw-r--r-- 1 mcc users 3.1K Mar 27 08:49 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 15K Mar 27 08:49 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 2.7K Mar 26 08:16 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 18K Mar 26 08:16 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.5K Mar 28 14:49 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.5K Mar 28 14:49 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 24 05:37 equiv_col
-rw-r--r-- 1 mcc users 4 Mar 24 05:37 instance
-rw-r--r-- 1 mcc users 6 Mar 24 05:37 iscolored
-rw-r--r-- 1 mcc users 73K Mar 24 05:37 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 DES-PT-05b-CTLCardinality-00
FORMULA_NAME DES-PT-05b-CTLCardinality-01
FORMULA_NAME DES-PT-05b-CTLCardinality-02
FORMULA_NAME DES-PT-05b-CTLCardinality-03
FORMULA_NAME DES-PT-05b-CTLCardinality-04
FORMULA_NAME DES-PT-05b-CTLCardinality-05
FORMULA_NAME DES-PT-05b-CTLCardinality-06
FORMULA_NAME DES-PT-05b-CTLCardinality-07
FORMULA_NAME DES-PT-05b-CTLCardinality-08
FORMULA_NAME DES-PT-05b-CTLCardinality-09
FORMULA_NAME DES-PT-05b-CTLCardinality-10
FORMULA_NAME DES-PT-05b-CTLCardinality-11
FORMULA_NAME DES-PT-05b-CTLCardinality-12
FORMULA_NAME DES-PT-05b-CTLCardinality-13
FORMULA_NAME DES-PT-05b-CTLCardinality-14
FORMULA_NAME DES-PT-05b-CTLCardinality-15

=== Now, execution of the tool begins

BK_START 1589532058753

[2020-05-15 08:41:02] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, CTLCardinality, -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]
[2020-05-15 08:41:02] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2020-05-15 08:41:02] [INFO ] Load time of PNML (sax parser for PT used): 153 ms
[2020-05-15 08:41:02] [INFO ] Transformed 300 places.
[2020-05-15 08:41:02] [INFO ] Transformed 251 transitions.
[2020-05-15 08:41:02] [INFO ] Found NUPN structural information;
[2020-05-15 08:41:02] [INFO ] Parsed PT model containing 300 places and 251 transitions in 245 ms.
Parsed 16 properties from file /home/mcc/execution/CTLCardinality.xml in 38 ms.
Finished random walk after 4547 steps, including 39 resets, run visited all 16 properties in 74 ms. (steps per millisecond=61 )
[2020-05-15 08:41:03] [INFO ] Initial state reduction rules for CTL removed 5 formulas.
[2020-05-15 08:41:03] [INFO ] Flatten gal took : 152 ms
[2020-05-15 08:41:03] [INFO ] Initial state reduction rules for CTL removed 5 formulas.
[2020-05-15 08:41:03] [INFO ] Flatten gal took : 49 ms
FORMULA DES-PT-05b-CTLCardinality-12 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DES-PT-05b-CTLCardinality-10 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DES-PT-05b-CTLCardinality-09 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DES-PT-05b-CTLCardinality-07 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA DES-PT-05b-CTLCardinality-02 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2020-05-15 08:41:03] [INFO ] Applying decomposition
[2020-05-15 08:41:03] [INFO ] Flatten gal took : 40 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/graph2832068300768763821.txt, -o, /tmp/graph2832068300768763821.bin, -w, /tmp/graph2832068300768763821.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/graph2832068300768763821.bin, -l, -1, -v, -w, /tmp/graph2832068300768763821.weights, -q, 0, -e, 0.001], workingDir=null]
[2020-05-15 08:41:03] [INFO ] Decomposing Gal with order
[2020-05-15 08:41:03] [INFO ] Rewriting arrays to variables to allow decomposition.
[2020-05-15 08:41:03] [INFO ] Removed a total of 31 redundant transitions.
[2020-05-15 08:41:04] [INFO ] Flatten gal took : 115 ms
[2020-05-15 08:41:04] [INFO ] Fuse similar labels procedure discarded/fused a total of 2 labels/synchronizations in 31 ms.
[2020-05-15 08:41:04] [INFO ] Time to serialize gal into /home/mcc/execution/CTLCardinality.pnml.gal : 22 ms
[2020-05-15 08:41:04] [INFO ] Time to serialize properties into /home/mcc/execution/CTLCardinality.ctl : 3 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/CTLCardinality.pnml.gal, -t, CGAL, -ctl, /home/mcc/execution/CTLCardinality.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/CTLCardinality.pnml.gal -t CGAL -ctl /home/mcc/execution/CTLCardinality.ctl
No direction supplied, using forward translation only.
Parsed 11 CTL formulae.
built 26 ordering constraints for composite.
built 9 ordering constraints for composite.
built 11 ordering constraints for composite.
built 8 ordering constraints for composite.
built 11 ordering constraints for composite.
built 7 ordering constraints for composite.
built 11 ordering constraints for composite.
built 7 ordering constraints for composite.
built 12 ordering constraints for composite.
built 3 ordering constraints for composite.
built 8 ordering constraints for composite.
built 10 ordering constraints for composite.
built 9 ordering constraints for composite.
built 14 ordering constraints for composite.
built 8 ordering constraints for composite.
built 14 ordering constraints for composite.
built 9 ordering constraints for composite.
built 13 ordering constraints for composite.
built 5 ordering constraints for composite.
built 9 ordering constraints for composite.
built 25 ordering constraints for composite.
built 20 ordering constraints for composite.
built 20 ordering constraints for composite.
built 19 ordering constraints for composite.
built 14 ordering constraints for composite.
built 10 ordering constraints for composite.
built 9 ordering constraints for composite.
built 17 ordering constraints for composite.
built 17 ordering constraints for composite.
built 9 ordering constraints for composite.
built 9 ordering constraints for composite.
built 9 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,2.61397e+20,14.6979,161832,7127,354,299442,2090,790,763180,152,6380,0


Converting to forward existential form...Done !
original formula: EG(((i2.i1.u26.p98==0)||(i11.i2.u73.p244==1)))
=> equivalent forward existential formula: [FwdG(Init,((i2.i1.u26.p98==0)||(i11.i2.u73.p244==1)))] != FALSE
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
ITS-tools command line returned an error code 139
[2020-05-15 08:50:46] [INFO ] Applying decomposition
[2020-05-15 08:50:46] [INFO ] Flatten gal took : 38 ms
[2020-05-15 08:50:46] [INFO ] Decomposing Gal with order
[2020-05-15 08:50:46] [INFO ] Rewriting arrays to variables to allow decomposition.
[2020-05-15 08:50:46] [INFO ] Removed a total of 38 redundant transitions.
[2020-05-15 08:50:46] [INFO ] Flatten gal took : 65 ms
[2020-05-15 08:50:46] [INFO ] Fuse similar labels procedure discarded/fused a total of 171 labels/synchronizations in 58 ms.
[2020-05-15 08:50:46] [INFO ] Time to serialize gal into /home/mcc/execution/CTLCardinality.pnml.gal : 12 ms
[2020-05-15 08:50:46] [INFO ] Time to serialize properties into /home/mcc/execution/CTLCardinality.ctl : 1 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/CTLCardinality.pnml.gal, -t, CGAL, -ctl, /home/mcc/execution/CTLCardinality.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/CTLCardinality.pnml.gal -t CGAL -ctl /home/mcc/execution/CTLCardinality.ctl
No direction supplied, using forward translation only.
Parsed 11 CTL formulae.
built 2 ordering constraints for composite.
built 6 ordering constraints for composite.
built 8 ordering constraints for composite.
built 6 ordering constraints for composite.
built 7 ordering constraints for composite.
built 8 ordering constraints for composite.
built 9 ordering constraints for composite.
built 13 ordering constraints for composite.
built 11 ordering constraints for composite.
built 9 ordering constraints for composite.
built 6 ordering constraints for composite.
built 8 ordering constraints for composite.
built 8 ordering constraints for composite.
built 8 ordering constraints for composite.
built 9 ordering constraints for composite.
built 8 ordering constraints for composite.
built 5 ordering constraints for composite.
built 8 ordering constraints for composite.
built 9 ordering constraints for composite.
built 5 ordering constraints for composite.
built 10 ordering constraints for composite.
built 9 ordering constraints for composite.
built 7 ordering constraints for composite.
built 5 ordering constraints for composite.
built 6 ordering constraints for composite.
built 6 ordering constraints for composite.
built 12 ordering constraints for composite.
built 11 ordering constraints for composite.
built 16 ordering constraints for composite.
built 14 ordering constraints for composite.
built 12 ordering constraints for composite.
built 10 ordering constraints for composite.
built 8 ordering constraints for composite.
built 6 ordering constraints for composite.
built 18 ordering constraints for composite.
built 16 ordering constraints for composite.
built 14 ordering constraints for composite.
built 12 ordering constraints for composite.
built 10 ordering constraints for composite.
built 8 ordering constraints for composite.
built 6 ordering constraints for composite.
built 13 ordering constraints for composite.
built 16 ordering constraints for composite.
built 14 ordering constraints for composite.
built 12 ordering constraints for composite.
built 10 ordering constraints for composite.
built 8 ordering constraints for composite.
built 6 ordering constraints for composite.
built 11 ordering constraints for composite.
built 5 ordering constraints for composite.
Detected timeout of ITS tools.
[2020-05-15 09:10:49] [INFO ] Flatten gal took : 796 ms
[2020-05-15 09:10:50] [INFO ] Input system was already deterministic with 251 transitions.
[2020-05-15 09:10:50] [INFO ] Transformed 300 places.
[2020-05-15 09:10:50] [INFO ] Transformed 251 transitions.
Running greatSPN : CommandLine [args=[/home/mcc/BenchKit//greatspn//bin/pinvar, /home/mcc/execution/gspn], workingDir=/home/mcc/execution]
P-invariant computation with GreatSPN timed out. Skipping.
Running greatSPN : CommandLine [args=[/home/mcc/BenchKit//greatspn//bin/RGMEDD2, /home/mcc/execution/gspn, -META, -varord-only], workingDir=/home/mcc/execution]
Run of greatSPN captured in /home/mcc/execution/outPut.txt
Using order generated by GreatSPN with heuristic : META
[2020-05-15 09:11:21] [INFO ] Time to serialize gal into /home/mcc/execution/CTLCardinality.pnml.gal : 5 ms
[2020-05-15 09:11:21] [INFO ] Time to serialize properties into /home/mcc/execution/CTLCardinality.ctl : 1 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/CTLCardinality.pnml.gal, -t, CGAL, -ctl, /home/mcc/execution/CTLCardinality.ctl, --load-order, /home/mcc/execution/model.ord, --gen-order, FOLLOW], 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/CTLCardinality.pnml.gal -t CGAL -ctl /home/mcc/execution/CTLCardinality.ctl --load-order /home/mcc/execution/model.ord --gen-order FOLLOW
Successfully loaded order from file /home/mcc/execution/model.ord
No direction supplied, using forward translation only.
Parsed 11 CTL formulae.
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,2.61397e+20,68.7522,1066396,2,210663,5,4.41203e+06,6,0,1444,5.05381e+06,0


Converting to forward existential form...Done !
original formula: EG(((p98==0)||(p244==1)))
=> equivalent forward existential formula: [FwdG(Init,((p98==0)||(p244==1)))] != FALSE
Hit Full ! (commute/partial/dont) 248/0/3
ITS-tools command line returned an error code 139

BK_STOP 1589534781554

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

+ export BINDIR=/home/mcc/BenchKit/
+ BINDIR=/home/mcc/BenchKit/
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ CTLCardinality = StateSpace ]]
+ /home/mcc/BenchKit//runeclipse.sh /home/mcc/execution CTLCardinality -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 CTLCardinality -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="DES-PT-05b"
export BK_EXAMINATION="CTLCardinality"
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 DES-PT-05b, examination is CTLCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r051-ebro-158902545900235"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/DES-PT-05b.tgz
mv DES-PT-05b execution
cd execution
if [ "CTLCardinality" = "ReachabilityDeadlock" ] || [ "CTLCardinality" = "UpperBounds" ] || [ "CTLCardinality" = "QuasiLiveness" ] || [ "CTLCardinality" = "StableMarking" ] || [ "CTLCardinality" = "Liveness" ] || [ "CTLCardinality" = "OneSafe" ] || [ "CTLCardinality" = "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 [ "CTLCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "CTLCardinality" != "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 "CTLCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property CTLCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "CTLCardinality.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 '' CTLCardinality.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "CTLCardinality" = "ReachabilityDeadlock" ] || [ "CTLCardinality" = "QuasiLiveness" ] || [ "CTLCardinality" = "StableMarking" ] || [ "CTLCardinality" = "Liveness" ] || [ "CTLCardinality" = "OneSafe" ] ; then
echo "FORMULA_NAME CTLCardinality"
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 ;