fond
Model Checking Contest 2019
9th edition, Prague, Czech Republic, April 7, 2019 (TOOLympics)
Execution of r197-oct2-155272231000461
Last Updated
Apr 15, 2019

About the Execution of ITS-Tools.M for PermAdmissibility-PT-50

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
15912.340 3503064.00 2910420.00 874.20 [undef] Cannot compute

Execution Chart

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

Trace from the execution

Formatting '/data/fko/mcc2019-input.r197-oct2-155272231000461.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fko/mcc2019-input.qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
...................
=====================================================================
Generated by BenchKit 2-3954
Executing tool itstoolsm
Input is PermAdmissibility-PT-50, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r197-oct2-155272231000461
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 876K
-rw-r--r-- 1 mcc users 5.8K Feb 12 04:12 CTLCardinality.txt
-rw-r--r-- 1 mcc users 30K Feb 12 04:12 CTLCardinality.xml
-rw-r--r-- 1 mcc users 28K Feb 8 03:16 CTLFireability.txt
-rw-r--r-- 1 mcc users 108K Feb 8 03:16 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K Mar 10 17:31 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 110 Feb 24 15:05 GlobalProperties.txt
-rw-r--r-- 1 mcc users 348 Feb 24 15:05 GlobalProperties.xml
-rw-r--r-- 1 mcc users 2.7K Feb 5 00:24 LTLCardinality.txt
-rw-r--r-- 1 mcc users 11K Feb 5 00:24 LTLCardinality.xml
-rw-r--r-- 1 mcc users 9.3K Feb 4 22:37 LTLFireability.txt
-rw-r--r-- 1 mcc users 34K Feb 4 22:37 LTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K Feb 4 07:56 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 18K Feb 4 07:56 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 20K Feb 1 02:12 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 71K Feb 1 02:12 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.9K Feb 4 22:22 UpperBounds.txt
-rw-r--r-- 1 mcc users 4.3K Feb 4 22:22 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Jan 29 09:34 equiv_col

-rw-r--r-- 1 mcc users 3 Jan 29 09:34 instance
-rw-r--r-- 1 mcc users 6 Jan 29 09:34 iscolored
-rw-r--r-- 1 mcc users 484K Mar 10 17:31 model.pnml

--------------------
content from stdout:

=== Data for post analysis generated by BenchKit (invocation template)

The expected result is a vector of positive values
NUM_VECTOR

here is the order used to build the result vector(from text file)
FORMULA_NAME PermAdmissibility-PT-50-UpperBounds-00
FORMULA_NAME PermAdmissibility-PT-50-UpperBounds-01
FORMULA_NAME PermAdmissibility-PT-50-UpperBounds-02
FORMULA_NAME PermAdmissibility-PT-50-UpperBounds-03
FORMULA_NAME PermAdmissibility-PT-50-UpperBounds-04
FORMULA_NAME PermAdmissibility-PT-50-UpperBounds-05
FORMULA_NAME PermAdmissibility-PT-50-UpperBounds-06
FORMULA_NAME PermAdmissibility-PT-50-UpperBounds-07
FORMULA_NAME PermAdmissibility-PT-50-UpperBounds-08
FORMULA_NAME PermAdmissibility-PT-50-UpperBounds-09
FORMULA_NAME PermAdmissibility-PT-50-UpperBounds-10
FORMULA_NAME PermAdmissibility-PT-50-UpperBounds-11
FORMULA_NAME PermAdmissibility-PT-50-UpperBounds-12
FORMULA_NAME PermAdmissibility-PT-50-UpperBounds-13
FORMULA_NAME PermAdmissibility-PT-50-UpperBounds-14
FORMULA_NAME PermAdmissibility-PT-50-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1553664244047

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
Invoking ITS tools like this :CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201903251645/bin/its-reach-linux64, --gc-threshold, 2000000, --quiet, -i, /home/mcc/execution/UpperBounds.pnml.gal, -t, CGAL, -reachable-file, UpperBounds.prop, --nowitness, --load-order, /home/mcc/execution/model.ord], workingDir=/home/mcc/execution]

its-reach command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201903251645/bin/its-reach-linux64 --gc-threshold 2000000 --quiet -i /home/mcc/execution/UpperBounds.pnml.gal -t CGAL -reachable-file UpperBounds.prop --nowitness --load-order /home/mcc/execution/model.ord
Successfully loaded order from file /home/mcc/execution/model.ord
Loading property file UpperBounds.prop.
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-00 with value :in2_2+in2_3
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-01 with value :c6
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-02 with value :c14
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-03 with value :c8
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-04 with value :aux14_0+aux14_1+aux14_2+aux14_3+aux14_4+aux14_6+aux14_5+aux14_7
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-05 with value :c7
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-06 with value :aux13_2+aux13_1+aux13_0+aux13_7+aux13_3+aux13_4+aux13_5+aux13_6
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-07 with value :aux7_7+aux7_6+aux7_3+aux7_2
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-08 with value :aux15_0
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-09 with value :out7_6
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-10 with value :out2_1
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-11 with value :out5_0
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-12 with value :in3_5
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-13 with value :aux16_3
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-14 with value :out8_2
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-15 with value :aux15_5
Invoking ITS tools like this :CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201903251645/bin/its-reach-linux64, --gc-threshold, 2000000, --quiet, -i, /home/mcc/execution/UpperBounds.pnml.gal, -t, CGAL, -reachable-file, UpperBounds.prop, --nowitness], workingDir=/home/mcc/execution]

its-reach command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201903251645/bin/its-reach-linux64 --gc-threshold 2000000 --quiet -i /home/mcc/execution/UpperBounds.pnml.gal -t CGAL -reachable-file UpperBounds.prop --nowitness
Loading property file UpperBounds.prop.
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-00 with value :in2_2+in2_3
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-01 with value :c6
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-02 with value :c14
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-03 with value :c8
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-04 with value :aux14_0+aux14_1+aux14_2+aux14_3+aux14_4+aux14_6+aux14_5+aux14_7
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-05 with value :c7
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-06 with value :aux13_2+aux13_1+aux13_0+aux13_7+aux13_3+aux13_4+aux13_5+aux13_6
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-07 with value :aux7_7+aux7_6+aux7_3+aux7_2
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-08 with value :aux15_0
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-09 with value :out7_6
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-10 with value :out2_1
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-11 with value :out5_0
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-12 with value :in3_5
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-13 with value :aux16_3
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-14 with value :out8_2
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-15 with value :aux15_5
*
Cache Stats : size=0 --- Peak size=0
Cache hit ratio : 0% (0/0)
*
GSHom Stats : size unicity table = 8
sizeof(_GShom):16
sizeof(SIdentity):16
Current/Peak number of SDD nodes in unicity table :4/4
sizeof(_GSDD):48
*
Cache Stats : size=30195813

Cache hit ratio : 0%
*
GHom Stats : size unicity table = 8341
sizeof(_GHom):24
sizeof(Identity):24
Peak number of DDD nodes in unicity table :67108862
sizeof(_GDDD):8
sizeof(DDD::edge_t):8
sizeof(DDD::val_t):2
Detected timeout of ITS tools.
Out of memory error !
Invoking ITS tools like this :CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201903251645/bin/its-reach-linux64, --gc-threshold, 2000000, --quiet, -i, /home/mcc/execution/UpperBounds.pnml.gal, -t, CGAL, -reachable-file, UpperBounds.prop, --nowitness], workingDir=/home/mcc/execution]

its-reach command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201903251645/bin/its-reach-linux64 --gc-threshold 2000000 --quiet -i /home/mcc/execution/UpperBounds.pnml.gal -t CGAL -reachable-file UpperBounds.prop --nowitness
Loading property file UpperBounds.prop.
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-00 with value :in2_2+in2_3
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-01 with value :c6
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-02 with value :c14
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-03 with value :c8
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-04 with value :aux14_0+aux14_1+aux14_2+aux14_3+aux14_4+aux14_6+aux14_5+aux14_7
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-05 with value :c7
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-06 with value :aux13_2+aux13_1+aux13_0+aux13_7+aux13_3+aux13_4+aux13_5+aux13_6
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-07 with value :aux7_7+aux7_6+aux7_3+aux7_2
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-08 with value :aux15_0
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-09 with value :out7_6
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-10 with value :out2_1
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-11 with value :out5_0
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-12 with value :in3_5
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-13 with value :aux16_3
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-14 with value :out8_2
Read [bounds] property : PermAdmissibility-PT-50-UpperBounds-15 with value :aux15_5
*
Cache Stats : size=0 --- Peak size=0
Cache hit ratio : 0% (0/0)
*
GSHom Stats : size unicity table = 8
sizeof(_GShom):16
sizeof(SIdentity):16
Current/Peak number of SDD nodes in unicity table :4/4
sizeof(_GSDD):48
*
Cache Stats : size=30195813

Cache hit ratio : 0%
*
GHom Stats : size unicity table = 7511
sizeof(_GHom):24
sizeof(Identity):24
Peak number of DDD nodes in unicity table :67108862
sizeof(_GDDD):8
sizeof(DDD::edge_t):8
sizeof(DDD::val_t):2
Detected timeout of ITS tools.
Out of memory error !

BK_STOP 1553667747111

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

+ export BINDIR=/home/mcc/BenchKit/
+ BINDIR=/home/mcc/BenchKit/
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ UpperBounds = StateSpace ]]
+ /home/mcc/BenchKit//runeclipse.sh /home/mcc/execution UpperBounds -its -ltsminpath /home/mcc/BenchKit//lts_install_dir/ -greatspnpath /home/mcc/BenchKit//greatspn/ -order META -manyOrder -smt
+ 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 UpperBounds -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 -vmargs -Dosgi.locking=none -Declipse.stateSaveDelayInterval=-1 -Dosgi.configuration.area=/tmp/.eclipse -Xss8m -Xms40m -Xmx8192m -Dfile.encoding=UTF-8 -Dosgi.requiredJavaVersion=1.6
Mar 27, 2019 5:24:05 AM fr.lip6.move.gal.application.Application start
INFO: Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, UpperBounds, -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]
Mar 27, 2019 5:24:05 AM fr.lip6.move.gal.application.MccTranslator transformPNML
INFO: Parsing pnml file : /home/mcc/execution/model.pnml
Mar 27, 2019 5:24:05 AM fr.lip6.move.gal.nupn.PTNetReader loadFromXML
INFO: Load time of PNML (sax parser for PT used): 77 ms
Mar 27, 2019 5:24:05 AM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 168 places.
Mar 27, 2019 5:24:05 AM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 592 transitions.
Mar 27, 2019 5:24:05 AM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/model.pnml.img.gal : 26 ms
Mar 27, 2019 5:24:05 AM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 168 ms
Mar 27, 2019 5:24:06 AM fr.lip6.move.gal.semantics.DeterministicNextBuilder getDeterministicNext
INFO: Input system was already deterministic with 592 transitions.
Mar 27, 2019 5:24:06 AM fr.lip6.move.gal.application.StructuralToGreatSPN handlePage
INFO: Transformed 168 places.
Mar 27, 2019 5:24:06 AM fr.lip6.move.gal.application.StructuralToGreatSPN handlePage
INFO: Transformed 592 transitions.
Mar 27, 2019 5:24:36 AM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/UpperBounds.pnml.gal : 4 ms
Mar 27, 2019 5:24:36 AM fr.lip6.move.serialization.SerializationUtil serializePropertiesForITSTools
INFO: Time to serialize properties into /home/mcc/execution/UpperBounds.prop : 0 ms
ITS-tools command line returned an error code 137
Mar 27, 2019 5:42:25 AM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 133 ms
Mar 27, 2019 5:42:25 AM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/UpperBounds.pnml.gal : 4 ms
Mar 27, 2019 5:42:25 AM fr.lip6.move.serialization.SerializationUtil serializePropertiesForITSTools
INFO: Time to serialize properties into /home/mcc/execution/UpperBounds.prop : 1 ms
java.io.IOException: Stream closed
at java.io.BufferedInputStream.getBufIfOpen(BufferedInputStream.java:170)
at java.io.BufferedInputStream.read(BufferedInputStream.java:336)
at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284)
at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326)
at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
at java.io.InputStreamReader.read(InputStreamReader.java:184)
at java.io.BufferedReader.fill(BufferedReader.java:161)
at java.io.BufferedReader.readLine(BufferedReader.java:324)
at java.io.BufferedReader.readLine(BufferedReader.java:389)
at fr.lip6.move.gal.application.ITSRunner$ITSInterpreter.run(ITSRunner.java:174)
at java.lang.Thread.run(Thread.java:748)
Mar 27, 2019 6:02:26 AM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 75 ms
Mar 27, 2019 6:02:26 AM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/UpperBounds.pnml.gal : 3 ms
Mar 27, 2019 6:02:26 AM fr.lip6.move.serialization.SerializationUtil serializePropertiesForITSTools
INFO: Time to serialize properties into /home/mcc/execution/UpperBounds.prop : 1 ms
java.io.IOException: Stream closed
at java.io.BufferedInputStream.getBufIfOpen(BufferedInputStream.java:170)
at java.io.BufferedInputStream.read(BufferedInputStream.java:336)
at sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:284)
at sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:326)
at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:178)
at java.io.InputStreamReader.read(InputStreamReader.java:184)
at java.io.BufferedReader.fill(BufferedReader.java:161)
at java.io.BufferedReader.readLine(BufferedReader.java:324)
at java.io.BufferedReader.readLine(BufferedReader.java:389)
at fr.lip6.move.gal.application.ITSRunner$ITSInterpreter.run(ITSRunner.java:174)
at java.lang.Thread.run(Thread.java:748)

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="PermAdmissibility-PT-50"
export BK_EXAMINATION="UpperBounds"
export BK_TOOL="itstoolsm"
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 2-3954"
echo " Executing tool itstoolsm"
echo " Input is PermAdmissibility-PT-50, examination is UpperBounds"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r197-oct2-155272231000461"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/PermAdmissibility-PT-50.tgz
mv PermAdmissibility-PT-50 execution
cd execution
if [ "UpperBounds" = "GlobalProperties" ] ; then
rm -f GenericPropertiesVerdict.xml
fi
if [ "UpperBounds" = "UpperBounds" ] ; 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 [ "UpperBounds" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "UpperBounds" != "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 "UpperBounds.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property UpperBounds.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "UpperBounds.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 '' UpperBounds.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
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 ;