Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2023-input.r517-tall-167987243700286.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2023-input.qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
=====================================================================
Generated by BenchKit 2-5348
Executing tool itstools
Input is Murphy-COL-D1N010, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r517-tall-167987243700286
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 372K
-rw-r--r-- 1 mcc users 5.5K Mar 23 15:21 CTLCardinality.txt
-rw-r--r-- 1 mcc users 55K Mar 23 15:21 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.1K Mar 23 15:20 CTLFireability.txt
-rw-r--r-- 1 mcc users 48K Mar 23 15:20 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.3K Mar 23 07:07 LTLCardinality.txt
-rw-r--r-- 1 mcc users 22K Mar 23 07:07 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.1K Mar 23 07:07 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K Mar 23 07:07 LTLFireability.xml
-rw-r--r-- 1 mcc users 1 Mar 26 22:42 NewModel
-rw-r--r-- 1 mcc users 7.2K Mar 23 15:23 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 69K Mar 23 15:23 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 7.3K Mar 23 15:23 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 68K Mar 23 15:23 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Mar 23 07:07 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K Mar 23 07:07 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 26 22:42 equiv_pt
-rw-r--r-- 1 mcc users 7 Mar 26 22:42 instance
-rw-r--r-- 1 mcc users 5 Mar 26 22:42 iscolored
-rw-r--r-- 1 mcc users 20K Mar 31 16:48 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 Murphy-COL-D1N010-ReachabilityCardinality-00
FORMULA_NAME Murphy-COL-D1N010-ReachabilityCardinality-01
FORMULA_NAME Murphy-COL-D1N010-ReachabilityCardinality-02
FORMULA_NAME Murphy-COL-D1N010-ReachabilityCardinality-03
FORMULA_NAME Murphy-COL-D1N010-ReachabilityCardinality-04
FORMULA_NAME Murphy-COL-D1N010-ReachabilityCardinality-05
FORMULA_NAME Murphy-COL-D1N010-ReachabilityCardinality-06
FORMULA_NAME Murphy-COL-D1N010-ReachabilityCardinality-07
FORMULA_NAME Murphy-COL-D1N010-ReachabilityCardinality-08
FORMULA_NAME Murphy-COL-D1N010-ReachabilityCardinality-09
FORMULA_NAME Murphy-COL-D1N010-ReachabilityCardinality-10
FORMULA_NAME Murphy-COL-D1N010-ReachabilityCardinality-11
FORMULA_NAME Murphy-COL-D1N010-ReachabilityCardinality-12
FORMULA_NAME Murphy-COL-D1N010-ReachabilityCardinality-13
FORMULA_NAME Murphy-COL-D1N010-ReachabilityCardinality-14
FORMULA_NAME Murphy-COL-D1N010-ReachabilityCardinality-15

=== Now, execution of the tool begins

BK_START 1680888842772

bash -c /home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n "BK_STOP " ; date -u +%s%3N
Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=ReachabilityCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=Murphy-COL-D1N010
Not applying reductions.
Model is COL
ReachabilityCardinality COL
Running Version 202304061127
[2023-04-07 17:34:04] [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]
[2023-04-07 17:34:04] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-04-07 17:34:04] [INFO ] Detected file is not PT type :http://www.pnml.org/version-2009/grammar/symmetricnet
log4j:WARN No appenders could be found for logger (org.apache.axiom.locator.DefaultOMMetaFactoryLocator).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
[2023-04-07 17:34:04] [WARNING] Using fallBack plugin, rng conformance not checked
[2023-04-07 17:34:04] [INFO ] Load time of PNML (colored model parsed with PNMLFW) : 418 ms
[2023-04-07 17:34:04] [INFO ] Imported 6 HL places and 7 HL transitions for a total of 12 PT places and 14.0 transition bindings in 16 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityCardinality.xml in 17 ms.
Working with output stream class java.io.PrintStream
FORMULA Murphy-COL-D1N010-ReachabilityCardinality-10 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Murphy-COL-D1N010-ReachabilityCardinality-12 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Murphy-COL-D1N010-ReachabilityCardinality-13 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2023-04-07 17:34:04] [INFO ] Built PT skeleton of HLPN with 6 places and 7 transitions 27 arcs in 4 ms.
[2023-04-07 17:34:04] [INFO ] Skeletonized 13 HLPN properties in 3 ms.
Remains 13 properties that can be checked using skeleton over-approximation.
Initial state reduction rules removed 4 formulas.
FORMULA Murphy-COL-D1N010-ReachabilityCardinality-00 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Murphy-COL-D1N010-ReachabilityCardinality-02 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Murphy-COL-D1N010-ReachabilityCardinality-05 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Murphy-COL-D1N010-ReachabilityCardinality-11 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Computed a total of 0 stabilizing places and 0 stable transitions
[2023-04-07 17:34:04] [INFO ] Flatten gal took : 14 ms
[2023-04-07 17:34:04] [INFO ] Flatten gal took : 1 ms
Arc [2:1*[(MOD (ADD $x 1) 2)]] contains successor/predecessor on variables of sort CD
[2023-04-07 17:34:04] [INFO ] Unfolded HLPN to a Petri net with 12 places and 14 transitions 54 arcs in 6 ms.
[2023-04-07 17:34:04] [INFO ] Unfolded 9 HLPN properties in 0 ms.
[2023-04-07 17:34:04] [INFO ] Flatten gal took : 4 ms
[2023-04-07 17:34:04] [INFO ] Flatten gal took : 11 ms
[2023-04-07 17:34:04] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality17924171767690035377.gal : 4 ms
[2023-04-07 17:34:04] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality3260173658625526903.prop : 3 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202304061127/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality17924171767690035377.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality3260173658625526903.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202304061127/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
Loading property file /tmp/ReachabilityCardinality3260173658625526903.prop.
SDD proceeding with computation,9 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,9 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,9 properties remain. new max is 16
SDD size :10 after 264
SDD proceeding with computation,9 properties remain. new max is 32
SDD size :264 after 874
SDD proceeding with computation,9 properties remain. new max is 64
SDD size :874 after 4324
SDD proceeding with computation,9 properties remain. new max is 128
SDD size :12156 after 12588
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst,39780,0.188515,5912,2,555,12,5029,15,0,208,3630,0
Total reachable state count : 39780

Verifying 9 reachability properties.
Reachability property Murphy-COL-D1N010-ReachabilityCardinality-01 does not hold.
FORMULA Murphy-COL-D1N010-ReachabilityCardinality-01 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
No reachable states exhibit your property : Murphy-COL-D1N010-ReachabilityCardinality-01

Incomplete random walk after 10001 steps, including 2 resets, run finished after 417 ms. (steps per millisecond=23 ) properties (out of 9) seen :0
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
Murphy-COL-D1N010-ReachabilityCardinality-01,0,0.18936,6176,1,0,12,5029,15,0,212,3630,0
Reachability property Murphy-COL-D1N010-ReachabilityCardinality-03 does not hold.
FORMULA Murphy-COL-D1N010-ReachabilityCardinality-03 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
No reachable states exhibit your property : Murphy-COL-D1N010-ReachabilityCardinality-03

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
Murphy-COL-D1N010-ReachabilityCardinality-03,0,0.203144,6176,1,0,12,5029,15,0,705,3630,0
Invariant property Murphy-COL-D1N010-ReachabilityCardinality-04 is true.
FORMULA Murphy-COL-D1N010-ReachabilityCardinality-04 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
Murphy-COL-D1N010-ReachabilityCardinality-04,0,0.204628,6176,1,0,12,5029,15,0,727,3630,0
Invariant property Murphy-COL-D1N010-ReachabilityCardinality-06 is true.
FORMULA Murphy-COL-D1N010-ReachabilityCardinality-06 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
Murphy-COL-D1N010-ReachabilityCardinality-06,0,0.233194,6176,1,0,12,5029,15,0,1147,3630,0
Reachability property Murphy-COL-D1N010-ReachabilityCardinality-07 does not hold.
FORMULA Murphy-COL-D1N010-ReachabilityCardinality-07 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
No reachable states exhibit your property : Murphy-COL-D1N010-ReachabilityCardinality-07

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
Murphy-COL-D1N010-ReachabilityCardinality-07,0,0.237863,6176,1,0,12,5029,15,0,1485,3630,0
Invariant property Murphy-COL-D1N010-ReachabilityCardinality-08 is true.
FORMULA Murphy-COL-D1N010-ReachabilityCardinality-08 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING

Incomplete Best-First random walk after 10000 steps, including 2 resets, run finished after 77 ms. (steps per millisecond=129 ) properties (out of 9) seen :0
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
Murphy-COL-D1N010-ReachabilityCardinality-08,0,0.239493,6176,1,0,12,5029,15,0,1512,3630,0
Invariant property Murphy-COL-D1N010-ReachabilityCardinality-09 is true.
FORMULA Murphy-COL-D1N010-ReachabilityCardinality-09 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
Murphy-COL-D1N010-ReachabilityCardinality-09,0,0.247811,6176,1,0,12,5029,15,0,1627,3630,0
Invariant property Murphy-COL-D1N010-ReachabilityCardinality-14 is true.
FORMULA Murphy-COL-D1N010-ReachabilityCardinality-14 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
Murphy-COL-D1N010-ReachabilityCardinality-14,0,0.254002,6176,1,0,12,5029,15,0,1664,3630,0
Reachability property Murphy-COL-D1N010-ReachabilityCardinality-15 does not hold.
FORMULA Murphy-COL-D1N010-ReachabilityCardinality-15 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
No reachable states exhibit your property : Murphy-COL-D1N010-ReachabilityCardinality-15

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
Murphy-COL-D1N010-ReachabilityCardinality-15,0,0.254518,6176,1,0,12,5029,15,0,1666,3630,0
ITS tools runner thread asked to quit. Dying gracefully.
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 74 ms. (steps per millisecond=135 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 65 ms. (steps per millisecond=153 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 97 ms. (steps per millisecond=103 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 69 ms. (steps per millisecond=144 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 66 ms. (steps per millisecond=151 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10000 steps, including 2 resets, run finished after 46 ms. (steps per millisecond=217 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10000 steps, including 2 resets, run finished after 58 ms. (steps per millisecond=172 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10000 steps, including 2 resets, run finished after 51 ms. (steps per millisecond=196 ) properties (out of 9) seen :0
Probably explored full state space saw : 39780 states, properties seen :0
Probabilistic random walk after 307764 steps, saw 39780 distinct states, run finished after 963 ms. (steps per millisecond=319 ) properties seen :0
Explored full state space saw : 39780 states, properties seen :0
Exhaustive walk after 307764 steps, saw 39780 distinct states, run finished after 716 ms. (steps per millisecond=429 ) properties seen :0
Parikh walk visited 0 properties in 0 ms.
All properties solved without resorting to model-checking.
Total runtime 3462 ms.

BK_STOP 1680888848667

--------------------
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_1.0.0.202304061127.jar
+ VERSION=202304061127
+ echo 'Running Version 202304061127'
+ /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="Murphy-COL-D1N010"
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 2-5348"
echo " Executing tool itstools"
echo " Input is Murphy-COL-D1N010, 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 r517-tall-167987243700286"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/Murphy-COL-D1N010.tgz
mv Murphy-COL-D1N010 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 ;