About the Execution of ITS-Tools for HouseConstruction-PT-002
Execution Summary | |||||
Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
15752.900 | 4584.00 | 6784.00 | 460.40 | FTFFFTTTFTFFTFTT | normal |
Execution Chart
We display below the execution chart for this examination (boot time has been removed).
Trace from the execution
Waiting for the VM to be ready (probing ssh)
...................
/home/mcc/execution
total 168K
-rw-r--r-- 1 mcc users 2.9K May 15 18:54 CTLCardinality.txt
-rw-r--r-- 1 mcc users 15K May 15 18:54 CTLCardinality.xml
-rw-r--r-- 1 mcc users 2.7K May 15 18:54 CTLFireability.txt
-rw-r--r-- 1 mcc users 19K May 15 18:54 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K May 15 18:50 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.0K May 15 18:50 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 2.5K May 15 18:54 LTLCardinality.txt
-rw-r--r-- 1 mcc users 11K May 15 18:54 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.0K May 15 18:54 LTLFireability.txt
-rw-r--r-- 1 mcc users 9.7K May 15 18:54 LTLFireability.xml
-rw-r--r-- 1 mcc users 3.4K May 15 18:54 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 16K May 15 18:54 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 115 May 15 18:54 ReachabilityDeadlock.txt
-rw-r--r-- 1 mcc users 353 May 15 18:54 ReachabilityDeadlock.xml
-rw-r--r-- 1 mcc users 2.2K May 15 18:54 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 11K May 15 18:54 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K May 15 18:54 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K May 15 18:54 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 15 18:50 equiv_col
-rw-r--r-- 1 mcc users 4 May 15 18:50 instance
-rw-r--r-- 1 mcc users 6 May 15 18:50 iscolored
-rw-r--r-- 1 mcc users 13K May 15 18:50 model.pnml
=====================================================================
Generated by BenchKit 2-3637
Executing tool itstools
Input is HouseConstruction-PT-002, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r104-smll-152658634100056
=====================================================================
--------------------
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 HouseConstruction-PT-002-ReachabilityFireability-00
FORMULA_NAME HouseConstruction-PT-002-ReachabilityFireability-01
FORMULA_NAME HouseConstruction-PT-002-ReachabilityFireability-02
FORMULA_NAME HouseConstruction-PT-002-ReachabilityFireability-03
FORMULA_NAME HouseConstruction-PT-002-ReachabilityFireability-04
FORMULA_NAME HouseConstruction-PT-002-ReachabilityFireability-05
FORMULA_NAME HouseConstruction-PT-002-ReachabilityFireability-06
FORMULA_NAME HouseConstruction-PT-002-ReachabilityFireability-07
FORMULA_NAME HouseConstruction-PT-002-ReachabilityFireability-08
FORMULA_NAME HouseConstruction-PT-002-ReachabilityFireability-09
FORMULA_NAME HouseConstruction-PT-002-ReachabilityFireability-10
FORMULA_NAME HouseConstruction-PT-002-ReachabilityFireability-11
FORMULA_NAME HouseConstruction-PT-002-ReachabilityFireability-12
FORMULA_NAME HouseConstruction-PT-002-ReachabilityFireability-13
FORMULA_NAME HouseConstruction-PT-002-ReachabilityFireability-14
FORMULA_NAME HouseConstruction-PT-002-ReachabilityFireability-15
=== Now, execution of the tool begins
BK_START 1526743989106
FORMULA HouseConstruction-PT-002-ReachabilityFireability-15 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA HouseConstruction-PT-002-ReachabilityFireability-14 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA HouseConstruction-PT-002-ReachabilityFireability-12 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA HouseConstruction-PT-002-ReachabilityFireability-11 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA HouseConstruction-PT-002-ReachabilityFireability-08 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA HouseConstruction-PT-002-ReachabilityFireability-05 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA HouseConstruction-PT-002-ReachabilityFireability-03 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA HouseConstruction-PT-002-ReachabilityFireability-02 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Using solver Z3 to compute partial order matrices.
Built C files in :
/home/mcc/execution
Invoking ITS tools like this :CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201805151631/bin/its-reach-linux64, --gc-threshold, 2000000, --quiet, -i, /home/mcc/execution/ReachabilityFireability.pnml.gal, -t, CGAL, -reachable-file, ReachabilityFireability.prop, --nowitness], workingDir=/home/mcc/execution]
its-reach command run as :
/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201805151631/bin/its-reach-linux64 --gc-threshold 2000000 --quiet -i /home/mcc/execution/ReachabilityFireability.pnml.gal -t CGAL -reachable-file ReachabilityFireability.prop --nowitness
Loading property file ReachabilityFireability.prop.
Read [invariant] property : HouseConstruction-PT-002-ReachabilityFireability-00 with value :(!((p11>=1)||(p7>=1)))
Read [reachable] property : HouseConstruction-PT-002-ReachabilityFireability-01 with value :((!(p6>=1))&&((p21>=1)&&(p23>=1)))
Read [invariant] property : HouseConstruction-PT-002-ReachabilityFireability-04 with value :(!((p18>=1)||(((p11>=1)||((p9>=1)&&(p8>=1)))&&((p22>=1)&&(p6>=1)))))
Read [reachable] property : HouseConstruction-PT-002-ReachabilityFireability-06 with value :((p11>=1)||((((p27>=1)&&(p26>=1))&&(p25>=1))&&(!(((p27>=1)&&(p26>=1))&&(p25>=1)))))
Read [reachable] property : HouseConstruction-PT-002-ReachabilityFireability-07 with value :(p22>=1)
Read [invariant] property : HouseConstruction-PT-002-ReachabilityFireability-09 with value :((((p9>=1)&&(p8>=1))||(!((p14>=1)&&(p18>=1))))||(p14>=1))
Read [invariant] property : HouseConstruction-PT-002-ReachabilityFireability-10 with value :(!(p16>=1))
Read [invariant] property : HouseConstruction-PT-002-ReachabilityFireability-13 with value :((!(p3>=1))||(((p20>=1)&&(p19>=1))&&(((p17>=1)&&(p1>=1))||((p4>=1)&&(p15>=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
HouseConstruction\_PT\_002\_flat\_flat,1501,0.020565,4116,2,493,5,1817,6,0,124,1602,0
Total reachable state count : 1501
Verifying 8 reachability properties.
Invariant property HouseConstruction-PT-002-ReachabilityFireability-00 does not hold.
FORMULA HouseConstruction-PT-002-ReachabilityFireability-00 FALSE 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
HouseConstruction-PT-002-ReachabilityFireability-00,23,0.021032,4144,2,76,6,1817,7,0,127,1602,0
Reachability property HouseConstruction-PT-002-ReachabilityFireability-01 is true.
FORMULA HouseConstruction-PT-002-ReachabilityFireability-01 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
HouseConstruction-PT-002-ReachabilityFireability-01,155,0.021715,4364,2,216,7,1817,8,0,134,1602,0
Invariant property HouseConstruction-PT-002-ReachabilityFireability-04 does not hold.
FORMULA HouseConstruction-PT-002-ReachabilityFireability-04 FALSE 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
HouseConstruction-PT-002-ReachabilityFireability-04,4,0.022615,4512,2,37,8,1817,9,0,145,1602,0
Reachability property HouseConstruction-PT-002-ReachabilityFireability-06 is true.
FORMULA HouseConstruction-PT-002-ReachabilityFireability-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
HouseConstruction-PT-002-ReachabilityFireability-06,23,0.023386,4512,2,76,8,1817,10,0,159,1602,0
Reachability property HouseConstruction-PT-002-ReachabilityFireability-07 is true.
FORMULA HouseConstruction-PT-002-ReachabilityFireability-07 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
HouseConstruction-PT-002-ReachabilityFireability-07,178,0.023614,4512,2,192,9,1817,11,0,159,1602,0
Invariant property HouseConstruction-PT-002-ReachabilityFireability-09 is true.
FORMULA HouseConstruction-PT-002-ReachabilityFireability-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
HouseConstruction-PT-002-ReachabilityFireability-09,0,0.024599,4512,1,0,9,1817,12,0,171,1602,0
Invariant property HouseConstruction-PT-002-ReachabilityFireability-10 does not hold.
FORMULA HouseConstruction-PT-002-ReachabilityFireability-10 FALSE 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
HouseConstruction-PT-002-ReachabilityFireability-10,53,0.024866,4512,2,126,10,1817,13,0,172,1602,0
Invariant property HouseConstruction-PT-002-ReachabilityFireability-13 does not hold.
FORMULA HouseConstruction-PT-002-ReachabilityFireability-13 FALSE 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
HouseConstruction-PT-002-ReachabilityFireability-13,3,0.025598,4512,2,28,11,1817,14,0,186,1602,0
Running compilation step : CommandLine [args=[gcc, -c, -I/home/mcc/BenchKit//lts_install_dir//include, -I., -std=c99, -fPIC, -O3, model.c], workingDir=/home/mcc/execution]
WARNING : LTS min runner thread was asked to interrupt. Dying gracefully.
BK_STOP 1526743993690
--------------------
content from stderr:
+ export BINDIR=/home/mcc/BenchKit/
+ BINDIR=/home/mcc/BenchKit/
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ /home/mcc/BenchKit//runeclipse.sh /home/mcc/execution ReachabilityFireability -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 -consoleLog -data /home/mcc/execution/workspace -pnfolder /home/mcc/execution -examination ReachabilityFireability -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
May 19, 2018 3:33:11 PM fr.lip6.move.gal.application.Application start
INFO: Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityFireability, -z3path, /home/mcc/BenchKit//z3/bin/z3, -yices2path, /home/mcc/BenchKit//yices/bin/yices, -its, -ltsminpath, /home/mcc/BenchKit//lts_install_dir/, -smt]
May 19, 2018 3:33:11 PM fr.lip6.move.gal.application.MccTranslator transformPNML
INFO: Parsing pnml file : /home/mcc/execution/model.pnml
May 19, 2018 3:33:11 PM fr.lip6.move.gal.nupn.PTNetReader loadFromXML
INFO: Load time of PNML (sax parser for PT used): 38 ms
May 19, 2018 3:33:11 PM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 26 places.
May 19, 2018 3:33:11 PM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 18 transitions.
May 19, 2018 3:33:11 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/model.pnml.img.gal : 7 ms
May 19, 2018 3:33:11 PM fr.lip6.move.gal.instantiate.PropertySimplifier rewriteWithInitialState
INFO: Invariant property HouseConstruction-PT-002-ReachabilityFireability-02 is trivially false : it is not verified in initial state.
May 19, 2018 3:33:11 PM fr.lip6.move.gal.instantiate.PropertySimplifier rewriteWithInitialState
INFO: Invariant property HouseConstruction-PT-002-ReachabilityFireability-03 is trivially false : it is not verified in initial state.
May 19, 2018 3:33:11 PM fr.lip6.move.gal.instantiate.PropertySimplifier rewriteWithInitialState
INFO: Reachable property HouseConstruction-PT-002-ReachabilityFireability-05 is trivially true : it is verified in initial state.
May 19, 2018 3:33:11 PM fr.lip6.move.gal.instantiate.PropertySimplifier rewriteWithInitialState
INFO: Invariant property HouseConstruction-PT-002-ReachabilityFireability-08 is trivially false : it is not verified in initial state.
May 19, 2018 3:33:11 PM fr.lip6.move.gal.instantiate.PropertySimplifier rewriteWithInitialState
INFO: Invariant property HouseConstruction-PT-002-ReachabilityFireability-11 is trivially false : it is not verified in initial state.
May 19, 2018 3:33:11 PM fr.lip6.move.gal.instantiate.PropertySimplifier rewriteWithInitialState
INFO: Reachable property HouseConstruction-PT-002-ReachabilityFireability-12 is trivially true : it is verified in initial state.
May 19, 2018 3:33:11 PM fr.lip6.move.gal.instantiate.PropertySimplifier rewriteWithInitialState
INFO: Reachable property HouseConstruction-PT-002-ReachabilityFireability-14 is trivially true : it is verified in initial state.
May 19, 2018 3:33:11 PM fr.lip6.move.gal.instantiate.PropertySimplifier rewriteWithInitialState
INFO: Reachable property HouseConstruction-PT-002-ReachabilityFireability-15 is trivially true : it is verified in initial state.
May 19, 2018 3:33:11 PM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 30 ms
May 19, 2018 3:33:11 PM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 10 ms
May 19, 2018 3:33:11 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/ReachabilityFireability.pnml.gal : 2 ms
May 19, 2018 3:33:11 PM fr.lip6.move.serialization.SerializationUtil serializePropertiesForITSTools
INFO: Time to serialize properties into /home/mcc/execution/ReachabilityFireability.prop : 1 ms
May 19, 2018 3:33:11 PM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 11 ms
May 19, 2018 3:33:12 PM fr.lip6.move.gal.semantics.DeterministicNextBuilder getDeterministicNext
INFO: Input system was already deterministic with 18 transitions.
May 19, 2018 3:33:12 PM fr.lip6.move.gal.semantics.DeterministicNextBuilder getDeterministicNext
INFO: Input system was already deterministic with 18 transitions.
May 19, 2018 3:33:12 PM org.smtlib.impl.Script execute
WARNING: Script execution failed on command (declare-fun s () (Array Int (Array Int Int))) with error (error "Error writing to Z3 solver: java.io.IOException: Stream closed")
Skipping mayMatrices nes/nds Error when declaring system variables to SMT solver.(error "Error writing to Z3 solver: java.io.IOException: Stream closed")
java.lang.RuntimeException: Error when declaring system variables to SMT solver.(error "Error writing to Z3 solver: java.io.IOException: Stream closed")
at fr.lip6.move.gal.gal2smt.bmc.NextBMCSolver.init(NextBMCSolver.java:93)
at fr.lip6.move.gal.gal2smt.bmc.KInductionSolver.init(KInductionSolver.java:59)
at fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver.init(NecessaryEnablingsolver.java:71)
at fr.lip6.move.gal.gal2pins.Gal2PinsTransformerNext.printLabels(Gal2PinsTransformerNext.java:471)
at fr.lip6.move.gal.gal2pins.Gal2PinsTransformerNext.printDependencyMatrix(Gal2PinsTransformerNext.java:209)
at fr.lip6.move.gal.gal2pins.Gal2PinsTransformerNext.buildBodyFile(Gal2PinsTransformerNext.java:85)
at fr.lip6.move.gal.gal2pins.Gal2PinsTransformerNext.transform(Gal2PinsTransformerNext.java:830)
at fr.lip6.move.gal.application.LTSminRunner$1.run(LTSminRunner.java:71)
at java.lang.Thread.run(Thread.java:748)
May 19, 2018 3:33:12 PM fr.lip6.move.gal.gal2pins.Gal2PinsTransformerNext transform
INFO: Built C files in 113ms conformant to PINS in folder :/home/mcc/execution
May 19, 2018 3:33:12 PM fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd checkProperties
INFO: Ran tautology test, simplified 0 / 0 in 268 ms.
May 19, 2018 3:33:12 PM fr.lip6.move.gal.gal2smt.Gal2SMTFrontEnd checkProperties
WARNING: Interrupting SMT solver.
May 19, 2018 3:33:12 PM fr.lip6.move.gal.application.SMTRunner$2 run
INFO: SMT solved 0/ 8 properties. Interrupting other analysis methods.
Sequence of Actions to be Executed by the VM
This is useful if one wants to reexecute the tool in the VM from the submitted image disk.
set -x
# this is for BenchKit: configuration of major elements for the test
export BK_INPUT="HouseConstruction-PT-002"
export BK_EXAMINATION="ReachabilityFireability"
export BK_TOOL="itstools"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"
# this is specific to your benchmark or test
export BIN_DIR="$HOME/BenchKit/bin"
# remove the execution directoty if it exists (to avoid increse of .vmdk images)
if [ -d execution ] ; then
rm -rf execution
fi
tar xzf /home/mcc/BenchKit/INPUTS/HouseConstruction-PT-002.tgz
mv HouseConstruction-PT-002 execution
cd execution
pwd
ls -lh
# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-3637"
echo " Executing tool itstools"
echo " Input is HouseConstruction-PT-002, examination is ReachabilityFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r104-smll-152658634100056"
echo "====================================================================="
echo
echo "--------------------"
echo "content from stdout:"
echo
echo "=== Data for post analysis generated by BenchKit (invocation template)"
echo
if [ "ReachabilityFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityFireability" != "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 "ReachabilityFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityFireability.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 ;