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-158902546400597.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 DLCround-PT-12a, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r051-ebro-158902546400597
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 1.1M
-rw-r--r-- 1 mcc users 3.3K Mar 30 20:46 CTLCardinality.txt
-rw-r--r-- 1 mcc users 19K Mar 30 20:46 CTLCardinality.xml
-rw-r--r-- 1 mcc users 2.6K Mar 29 10:58 CTLFireability.txt
-rw-r--r-- 1 mcc users 18K Mar 29 10:58 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K Mar 24 05:37 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 3.6K Apr 8 14:51 LTLCardinality.txt
-rw-r--r-- 1 mcc users 28K Apr 28 14:00 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.0K Apr 8 14:51 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Apr 28 14:00 LTLFireability.xml
-rw-r--r-- 1 mcc users 3.2K Mar 28 06:35 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 16K Mar 28 06:35 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 2.4K Mar 27 00:56 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 13K Mar 27 00:56 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Mar 28 14:49 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K 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 871K 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 positive values
NUM_VECTOR

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

=== Now, execution of the tool begins

BK_START 1589626017284

[2020-05-16 10:47:00] [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, -timeout, 3600]
[2020-05-16 10:47:00] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2020-05-16 10:47:01] [INFO ] Load time of PNML (sax parser for PT used): 483 ms
[2020-05-16 10:47:01] [INFO ] Transformed 419 places.
[2020-05-16 10:47:01] [INFO ] Transformed 3407 transitions.
[2020-05-16 10:47:01] [INFO ] Found NUPN structural information;
[2020-05-16 10:47:01] [INFO ] Parsed PT model containing 419 places and 3407 transitions in 611 ms.
Ensure Unique test removed 315 transitions
Reduce redundant transitions removed 315 transitions.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 46 ms.
Finished random walk after 0 steps, including 0 resets, run visited all 0 properties in 2 ms. (steps per millisecond=0 )
[2020-05-16 10:47:02] [INFO ] Flatten gal took : 429 ms
[2020-05-16 10:47:02] [INFO ] Applying decomposition
[2020-05-16 10:47:02] [INFO ] Flatten gal took : 237 ms
[2020-05-16 10:47:02] [INFO ] Time to serialize gal into /home/mcc/execution/UpperBounds.pnml.gal : 78 ms
[2020-05-16 10:47:02] [INFO ] Time to serialize properties into /home/mcc/execution/UpperBounds.prop : 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-reach-linux64, --gc-threshold, 2000000, --quiet, -i, /home/mcc/execution/UpperBounds.pnml.gal, -t, CGAL, -reachable-file, UpperBounds.prop, --nowitness, --gen-order, FOLLOW], workingDir=/home/mcc/execution]

its-reach command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202005100927/bin/its-reach-linux64 --gc-threshold 2000000 --quiet -i /home/mcc/execution/UpperBounds.pnml.gal -t CGAL -reachable-file UpperBounds.prop --nowitness --gen-order FOLLOW
Loading property file UpperBounds.prop.
Read [bounds] property : DLCround-PT-12a-UpperBounds-00 with value :p245
Read [bounds] property : DLCround-PT-12a-UpperBounds-01 with value :p27
Read [bounds] property : DLCround-PT-12a-UpperBounds-02 with value :p416
Read [bounds] property : DLCround-PT-12a-UpperBounds-03 with value :p340
Read [bounds] property : DLCround-PT-12a-UpperBounds-04 with value :p5
Read [bounds] property : DLCround-PT-12a-UpperBounds-05 with value :p261
Read [bounds] property : DLCround-PT-12a-UpperBounds-06 with value :p32
Read [bounds] property : DLCround-PT-12a-UpperBounds-07 with value :p244
Read [bounds] property : DLCround-PT-12a-UpperBounds-08 with value :p215
Read [bounds] property : DLCround-PT-12a-UpperBounds-09 with value :p166
Read [bounds] property : DLCround-PT-12a-UpperBounds-10 with value :p277
Read [bounds] property : DLCround-PT-12a-UpperBounds-11 with value :p56
Read [bounds] property : DLCround-PT-12a-UpperBounds-12 with value :p125
Read [bounds] property : DLCround-PT-12a-UpperBounds-13 with value :p325
Read [bounds] property : DLCround-PT-12a-UpperBounds-14 with value :p43
Read [bounds] property : DLCround-PT-12a-UpperBounds-15 with value :p358
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,2.401e+16,3.41162,32616,2,3156,5,79803,6,0,4181,44665,0
Total reachable state count : 24010000000000001

Verifying 16 reachability properties.
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property DLCround-PT-12a-UpperBounds-00 :0 <= p245 <= 1
FORMULA DLCround-PT-12a-UpperBounds-00 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DLCround-PT-12a-UpperBounds-00,0,3.42034,32616,1,0,7,79803,9,1,4951,44665,4
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property DLCround-PT-12a-UpperBounds-01 :0 <= p27 <= 1
FORMULA DLCround-PT-12a-UpperBounds-01 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DLCround-PT-12a-UpperBounds-01,0,3.42651,32616,1,0,8,79803,10,1,5432,44665,5
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property DLCround-PT-12a-UpperBounds-02 :0 <= p416 <= 1
FORMULA DLCround-PT-12a-UpperBounds-02 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DLCround-PT-12a-UpperBounds-02,0,3.42896,32616,1,0,9,79803,11,1,5469,44665,6
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property DLCround-PT-12a-UpperBounds-03 :0 <= p340 <= 1
FORMULA DLCround-PT-12a-UpperBounds-03 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DLCround-PT-12a-UpperBounds-03,0,3.43478,32616,1,0,10,79803,12,1,5824,44665,7
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property DLCround-PT-12a-UpperBounds-04 :0 <= p5 <= 1
FORMULA DLCround-PT-12a-UpperBounds-04 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DLCround-PT-12a-UpperBounds-04,0,3.44278,32616,1,0,11,79803,13,1,6485,44665,8
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property DLCround-PT-12a-UpperBounds-05 :0 <= p261 <= 1
FORMULA DLCround-PT-12a-UpperBounds-05 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DLCround-PT-12a-UpperBounds-05,0,3.44946,32616,1,0,12,79803,14,1,6804,44665,9
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property DLCround-PT-12a-UpperBounds-06 :0 <= p32 <= 1
FORMULA DLCround-PT-12a-UpperBounds-06 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DLCround-PT-12a-UpperBounds-06,0,3.45761,32616,1,0,13,79803,15,1,7637,44665,10
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property DLCround-PT-12a-UpperBounds-07 :0 <= p244 <= 1
FORMULA DLCround-PT-12a-UpperBounds-07 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DLCround-PT-12a-UpperBounds-07,0,3.46192,32616,1,0,14,79803,16,1,7804,44665,11
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property DLCround-PT-12a-UpperBounds-08 :0 <= p215 <= 1
FORMULA DLCround-PT-12a-UpperBounds-08 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DLCround-PT-12a-UpperBounds-08,0,3.46784,32616,1,0,15,79803,17,1,8279,44665,12
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property DLCround-PT-12a-UpperBounds-09 :0 <= p166 <= 1
FORMULA DLCround-PT-12a-UpperBounds-09 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DLCround-PT-12a-UpperBounds-09,0,3.47632,32616,1,0,16,79803,18,1,9046,44665,13
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property DLCround-PT-12a-UpperBounds-10 :0 <= p277 <= 1
FORMULA DLCround-PT-12a-UpperBounds-10 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DLCround-PT-12a-UpperBounds-10,0,3.48529,32616,1,0,17,79803,19,1,9831,44665,14
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property DLCround-PT-12a-UpperBounds-11 :0 <= p56 <= 1
FORMULA DLCround-PT-12a-UpperBounds-11 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DLCround-PT-12a-UpperBounds-11,0,3.49377,32616,1,0,18,79803,20,1,10612,44665,15
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property DLCround-PT-12a-UpperBounds-12 :0 <= p125 <= 1
FORMULA DLCround-PT-12a-UpperBounds-12 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DLCround-PT-12a-UpperBounds-12,0,3.4964,32616,1,0,19,79803,21,1,10673,44665,16
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property DLCround-PT-12a-UpperBounds-13 :0 <= p325 <= 1
FORMULA DLCround-PT-12a-UpperBounds-13 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DLCround-PT-12a-UpperBounds-13,0,3.50287,32616,1,0,20,79803,22,1,11168,44665,17
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property DLCround-PT-12a-UpperBounds-14 :0 <= p43 <= 1
FORMULA DLCround-PT-12a-UpperBounds-14 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DLCround-PT-12a-UpperBounds-14,0,3.51204,32616,1,0,21,79803,23,1,11957,44665,18
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property DLCround-PT-12a-UpperBounds-15 :0 <= p358 <= 1
FORMULA DLCround-PT-12a-UpperBounds-15 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
DLCround-PT-12a-UpperBounds-15,0,3.51702,32616,1,0,22,79803,24,1,12168,44665,19

BK_STOP 1589626029292

--------------------
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 -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 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 -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="DLCround-PT-12a"
export BK_EXAMINATION="UpperBounds"
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 DLCround-PT-12a, 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 r051-ebro-158902546400597"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/DLCround-PT-12a.tgz
mv DLCround-PT-12a execution
cd execution
if [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "UpperBounds" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] || [ "UpperBounds" = "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 [ "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
elif [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] ; then
echo "FORMULA_NAME UpperBounds"
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 ;