About the Execution of ITS-Tools for HexagonalGrid-PT-126
Execution Summary | |||||
Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
296.500 | 3342.00 | 7120.00 | 95.90 | 1 1 1 1 1 12 12 12 12 1 1 1 1 1 1 18 | normal |
Execution Chart
We display below the execution chart for this examination (boot time has been removed).
Trace from the execution
Formatting '/local/x2003239/mcc2019-input.r085-csrt-155246554600551.qcow2', fmt=qcow2 size=4294967296 backing_file=/local/x2003239/mcc2019-input.qcow2 encryption=off 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 itstools
Input is HexagonalGrid-PT-126, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r085-csrt-155246554600551
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 196K
-rw-r--r-- 1 mcc users 3.3K Feb 11 01:43 CTLCardinality.txt
-rw-r--r-- 1 mcc users 17K Feb 11 01:43 CTLCardinality.xml
-rw-r--r-- 1 mcc users 2.8K Feb 7 01:30 CTLFireability.txt
-rw-r--r-- 1 mcc users 17K Feb 7 01:30 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K Mar 10 17:31 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 107 Feb 24 15:05 GlobalProperties.txt
-rw-r--r-- 1 mcc users 345 Feb 24 15:05 GlobalProperties.xml
-rw-r--r-- 1 mcc users 2.6K Feb 4 23:57 LTLCardinality.txt
-rw-r--r-- 1 mcc users 13K Feb 4 23:57 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.0K Feb 4 22:36 LTLFireability.txt
-rw-r--r-- 1 mcc users 9.1K Feb 4 22:36 LTLFireability.xml
-rw-r--r-- 1 mcc users 3.7K Feb 3 08:50 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 17K Feb 3 08:50 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 3.3K Jan 31 03:02 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 19K Jan 31 03:02 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Feb 4 22:21 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Feb 4 22:21 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Jan 29 09:34 equiv_col
-rw-r--r-- 1 mcc users 4 Jan 29 09:34 instance
-rw-r--r-- 1 mcc users 6 Jan 29 09:34 iscolored
-rw-r--r-- 1 mcc users 0 Jan 29 09:34 model-fix.log
-rwxr-xr-x 1 mcc users 29K 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 HexagonalGrid-PT-126-UpperBounds-00
FORMULA_NAME HexagonalGrid-PT-126-UpperBounds-01
FORMULA_NAME HexagonalGrid-PT-126-UpperBounds-02
FORMULA_NAME HexagonalGrid-PT-126-UpperBounds-03
FORMULA_NAME HexagonalGrid-PT-126-UpperBounds-04
FORMULA_NAME HexagonalGrid-PT-126-UpperBounds-05
FORMULA_NAME HexagonalGrid-PT-126-UpperBounds-06
FORMULA_NAME HexagonalGrid-PT-126-UpperBounds-07
FORMULA_NAME HexagonalGrid-PT-126-UpperBounds-08
FORMULA_NAME HexagonalGrid-PT-126-UpperBounds-09
FORMULA_NAME HexagonalGrid-PT-126-UpperBounds-10
FORMULA_NAME HexagonalGrid-PT-126-UpperBounds-11
FORMULA_NAME HexagonalGrid-PT-126-UpperBounds-12
FORMULA_NAME HexagonalGrid-PT-126-UpperBounds-13
FORMULA_NAME HexagonalGrid-PT-126-UpperBounds-14
FORMULA_NAME HexagonalGrid-PT-126-UpperBounds-15
=== Now, execution of the tool begins
BK_START 1552790482092
Invoking ITS tools like this :CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201903111103/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_1.0.0.201903111103/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 : HexagonalGrid-PT-126-UpperBounds-00 with value :pol2_1_1
Read [bounds] property : HexagonalGrid-PT-126-UpperBounds-01 with value :pol3_1_1
Read [bounds] property : HexagonalGrid-PT-126-UpperBounds-02 with value :pil5_1_1
Read [bounds] property : HexagonalGrid-PT-126-UpperBounds-03 with value :pol5_1_1
Read [bounds] property : HexagonalGrid-PT-126-UpperBounds-04 with value :pi5_1_1
Read [bounds] property : HexagonalGrid-PT-126-UpperBounds-05 with value :pb3_1_1
Read [bounds] property : HexagonalGrid-PT-126-UpperBounds-06 with value :pb5_1_1
Read [bounds] property : HexagonalGrid-PT-126-UpperBounds-07 with value :pb2_1_1
Read [bounds] property : HexagonalGrid-PT-126-UpperBounds-08 with value :pb4_1_1
Read [bounds] property : HexagonalGrid-PT-126-UpperBounds-09 with value :pi4_1_1
Read [bounds] property : HexagonalGrid-PT-126-UpperBounds-10 with value :pol3_1_1
Read [bounds] property : HexagonalGrid-PT-126-UpperBounds-11 with value :pol4_1_1
Read [bounds] property : HexagonalGrid-PT-126-UpperBounds-12 with value :pol6_1_1
Read [bounds] property : HexagonalGrid-PT-126-UpperBounds-13 with value :pol1_1_1
Read [bounds] property : HexagonalGrid-PT-126-UpperBounds-14 with value :pil2_1_1
Read [bounds] property : HexagonalGrid-PT-126-UpperBounds-15 with value :pbl_1_1
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
HexagonalGrid\_PT\_126\_flat,2.66419e+06,0.178716,8064,2,818,5,25577,6,0,169,23692,0
Total reachable state count : 2664192
Verifying 16 reachability properties.
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property HexagonalGrid-PT-126-UpperBounds-00 :0 <= pol2_1_1 <= 1
FORMULA HexagonalGrid-PT-126-UpperBounds-00 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
HexagonalGrid-PT-126-UpperBounds-00,0,0.179158,8132,1,0,7,25577,9,1,223,23692,4
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property HexagonalGrid-PT-126-UpperBounds-01 :0 <= pol3_1_1 <= 1
FORMULA HexagonalGrid-PT-126-UpperBounds-01 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
HexagonalGrid-PT-126-UpperBounds-01,0,0.179309,8200,1,0,8,25577,10,1,240,23692,5
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property HexagonalGrid-PT-126-UpperBounds-02 :0 <= pil5_1_1 <= 1
FORMULA HexagonalGrid-PT-126-UpperBounds-02 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
HexagonalGrid-PT-126-UpperBounds-02,0,0.179527,8200,1,0,9,25577,11,1,275,23692,6
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property HexagonalGrid-PT-126-UpperBounds-03 :0 <= pol5_1_1 <= 1
FORMULA HexagonalGrid-PT-126-UpperBounds-03 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
HexagonalGrid-PT-126-UpperBounds-03,0,0.179622,8200,1,0,10,25577,12,1,284,23692,7
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property HexagonalGrid-PT-126-UpperBounds-04 :0 <= pi5_1_1 <= 1
FORMULA HexagonalGrid-PT-126-UpperBounds-04 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
HexagonalGrid-PT-126-UpperBounds-04,0,0.179843,8200,1,0,11,25577,13,1,317,23692,8
Min sum of variable value : 0
Maximum sum along a path : 12
Bounds property HexagonalGrid-PT-126-UpperBounds-05 :0 <= pb3_1_1 <= 12
FORMULA HexagonalGrid-PT-126-UpperBounds-05 12 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
HexagonalGrid-PT-126-UpperBounds-05,0,0.18211,8200,1,0,12,25577,14,1,385,23692,9
Min sum of variable value : 0
Maximum sum along a path : 12
Bounds property HexagonalGrid-PT-126-UpperBounds-06 :0 <= pb5_1_1 <= 12
FORMULA HexagonalGrid-PT-126-UpperBounds-06 12 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
HexagonalGrid-PT-126-UpperBounds-06,0,0.18339,8200,1,0,13,25577,15,1,443,23692,10
Min sum of variable value : 0
Maximum sum along a path : 12
Bounds property HexagonalGrid-PT-126-UpperBounds-07 :0 <= pb2_1_1 <= 12
FORMULA HexagonalGrid-PT-126-UpperBounds-07 12 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
HexagonalGrid-PT-126-UpperBounds-07,0,0.185667,8200,1,0,14,25577,16,1,513,23692,11
Min sum of variable value : 0
Maximum sum along a path : 12
Bounds property HexagonalGrid-PT-126-UpperBounds-08 :0 <= pb4_1_1 <= 12
FORMULA HexagonalGrid-PT-126-UpperBounds-08 12 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
HexagonalGrid-PT-126-UpperBounds-08,0,0.187286,8200,1,0,15,25577,17,1,573,23692,12
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property HexagonalGrid-PT-126-UpperBounds-09 :0 <= pi4_1_1 <= 1
FORMULA HexagonalGrid-PT-126-UpperBounds-09 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
HexagonalGrid-PT-126-UpperBounds-09,0,0.187558,8200,1,0,16,25577,18,1,612,23692,13
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property HexagonalGrid-PT-126-UpperBounds-10 :0 <= pol3_1_1 <= 1
FORMULA HexagonalGrid-PT-126-UpperBounds-10 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
HexagonalGrid-PT-126-UpperBounds-10,0,0.187645,8200,1,0,16,25577,18,1,612,23692,13
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property HexagonalGrid-PT-126-UpperBounds-11 :0 <= pol4_1_1 <= 1
FORMULA HexagonalGrid-PT-126-UpperBounds-11 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
HexagonalGrid-PT-126-UpperBounds-11,0,0.187753,8200,1,0,17,25577,19,1,625,23692,14
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property HexagonalGrid-PT-126-UpperBounds-12 :0 <= pol6_1_1 <= 1
FORMULA HexagonalGrid-PT-126-UpperBounds-12 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
HexagonalGrid-PT-126-UpperBounds-12,0,0.18784,8200,1,0,18,25577,20,1,630,23692,15
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property HexagonalGrid-PT-126-UpperBounds-13 :0 <= pol1_1_1 <= 1
FORMULA HexagonalGrid-PT-126-UpperBounds-13 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
HexagonalGrid-PT-126-UpperBounds-13,0,0.188026,8200,1,0,19,25577,21,1,655,23692,16
Min sum of variable value : 0
Maximum sum along a path : 1
Bounds property HexagonalGrid-PT-126-UpperBounds-14 :0 <= pil2_1_1 <= 1
FORMULA HexagonalGrid-PT-126-UpperBounds-14 1 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
HexagonalGrid-PT-126-UpperBounds-14,0,0.189378,8200,1,0,20,25577,22,1,708,23692,17
Min sum of variable value : 0
Maximum sum along a path : 18
Bounds property HexagonalGrid-PT-126-UpperBounds-15 :0 <= pbl_1_1 <= 18
FORMULA HexagonalGrid-PT-126-UpperBounds-15 18 TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
HexagonalGrid-PT-126-UpperBounds-15,0,0.192068,8200,1,0,21,25577,23,1,770,23692,18
BK_STOP 1552790485434
--------------------
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/ -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/ -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 17, 2019 2:41:24 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/, -smt]
Mar 17, 2019 2:41:24 AM fr.lip6.move.gal.application.MccTranslator transformPNML
INFO: Parsing pnml file : /home/mcc/execution/model.pnml
Mar 17, 2019 2:41:24 AM fr.lip6.move.gal.nupn.PTNetReader loadFromXML
INFO: Load time of PNML (sax parser for PT used): 49 ms
Mar 17, 2019 2:41:24 AM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 31 places.
Mar 17, 2019 2:41:24 AM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 42 transitions.
Mar 17, 2019 2:41:24 AM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/model.pnml.img.gal : 10 ms
Mar 17, 2019 2:41:24 AM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 101 ms
Mar 17, 2019 2:41:24 AM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/UpperBounds.pnml.gal : 3 ms
Mar 17, 2019 2:41:24 AM fr.lip6.move.serialization.SerializationUtil serializePropertiesForITSTools
INFO: Time to serialize properties into /home/mcc/execution/UpperBounds.prop : 1 ms
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="HexagonalGrid-PT-126"
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 2-3954"
echo " Executing tool itstools"
echo " Input is HexagonalGrid-PT-126, 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 r085-csrt-155246554600551"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/HexagonalGrid-PT-126.tgz
mv HexagonalGrid-PT-126 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 '
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 ;