About the Execution of M4M.struct for JoinFreeModules-PT-0020
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 292K
-rw-r--r-- 1 mcc users 3.8K May 15 18:54 CTLCardinality.txt
-rw-r--r-- 1 mcc users 22K May 15 18:54 CTLCardinality.xml
-rw-r--r-- 1 mcc users 3.1K May 15 18:54 CTLFireability.txt
-rw-r--r-- 1 mcc users 24K 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 5.7K May 15 18:50 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 2.6K May 15 18:54 LTLCardinality.txt
-rw-r--r-- 1 mcc users 12K 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 9.4K May 15 18:54 LTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K May 15 18:54 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 21K May 15 18:54 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 114 May 15 18:54 ReachabilityDeadlock.txt
-rw-r--r-- 1 mcc users 352 May 15 18:54 ReachabilityDeadlock.xml
-rw-r--r-- 1 mcc users 2.5K May 15 18:54 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 13K 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 3.7K 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 5 May 15 18:50 instance
-rw-r--r-- 1 mcc users 6 May 15 18:50 iscolored
-rw-r--r-- 1 mcc users 113K May 15 18:50 model.pnml
=====================================================================
Generated by BenchKit 2-3637
Executing tool mcc4mcc-structural
Input is JoinFreeModules-PT-0020, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r107-smll-152658637600254
=====================================================================
--------------------
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 JoinFreeModules-PT-0020-UpperBounds-00
FORMULA_NAME JoinFreeModules-PT-0020-UpperBounds-01
FORMULA_NAME JoinFreeModules-PT-0020-UpperBounds-02
FORMULA_NAME JoinFreeModules-PT-0020-UpperBounds-03
FORMULA_NAME JoinFreeModules-PT-0020-UpperBounds-04
FORMULA_NAME JoinFreeModules-PT-0020-UpperBounds-05
FORMULA_NAME JoinFreeModules-PT-0020-UpperBounds-06
FORMULA_NAME JoinFreeModules-PT-0020-UpperBounds-07
FORMULA_NAME JoinFreeModules-PT-0020-UpperBounds-08
FORMULA_NAME JoinFreeModules-PT-0020-UpperBounds-09
FORMULA_NAME JoinFreeModules-PT-0020-UpperBounds-10
FORMULA_NAME JoinFreeModules-PT-0020-UpperBounds-11
FORMULA_NAME JoinFreeModules-PT-0020-UpperBounds-12
FORMULA_NAME JoinFreeModules-PT-0020-UpperBounds-13
FORMULA_NAME JoinFreeModules-PT-0020-UpperBounds-14
FORMULA_NAME JoinFreeModules-PT-0020-UpperBounds-15
=== Now, execution of the tool begins
BK_START 1526834645249
BK_STOP 1526834658337
--------------------
content from stderr:
Prefix is 75f5f979.
Reading known information in /usr/share/mcc4mcc/75f5f979-known.json.
Reading learned information in /usr/share/mcc4mcc/75f5f979-learned.json.
Reading value translations in /usr/share/mcc4mcc/75f5f979-values.json.
Using directory /home/mcc/execution for input, as it contains a model.pnml file.
Using JoinFreeModules-PT-0020 as instance name.
Using JoinFreeModules as model name.
Using algorithm or tool random-forest.
Model characteristics are: {'Examination': 'UpperBounds', 'Place/Transition': True, 'Colored': False, 'Relative-Time': 1, 'Relative-Memory': 1, 'Ordinary': False, 'Simple Free Choice': False, 'Extended Free Choice': False, 'State Machine': False, 'Marked Graph': False, 'Connected': True, 'Strongly Connected': True, 'Source Place': False, 'Sink Place': False, 'Source Transition': False, 'Sink Transition': False, 'Loop Free': False, 'Conservative': False, 'Sub-Conservative': True, 'Nested Units': False, 'Safe': False, 'Deadlock': None, 'Reversible': None, 'Quasi Live': None, 'Live': None}.
Known tools are: [{'Time': 227, 'Memory': 109.78, 'Tool': 'lola'}, {'Time': 2701, 'Memory': 249.7, 'Tool': 'itstools'}, {'Time': 3944, 'Memory': 171.68, 'Tool': 'gspn'}, {'Time': 60816, 'Memory': 7790.59, 'Tool': 'marcie'}].
Learned tools are: [{'Tool': 'itstools'}].
Learned tool itstools is 11.898678414096917x far from the best tool lola.
UpperBounds itstools JoinFreeModules-PT-0020...
May 20, 2018 4:44:14 PM fr.lip6.move.gal.application.Application start
INFO: Running its-tools with arguments : [-z3path, /usr/bin/z3, -yices2path, /usr/bin/yices, -ltsminpath, /usr/bin, -smt, -its, -pnfolder, /mcc-data, -examination, UpperBounds]
May 20, 2018 4:44:14 PM fr.lip6.move.gal.application.MccTranslator transformPNML
INFO: Parsing pnml file : /mcc-data/model.pnml
May 20, 2018 4:44:14 PM fr.lip6.move.gal.nupn.PTNetReader loadFromXML
INFO: Load time of PNML (sax parser for PT used): 205 ms
May 20, 2018 4:44:14 PM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 101 places.
May 20, 2018 4:44:14 PM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 161 transitions.
May 20, 2018 4:44:14 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /mcc-data/model.pnml.img.gal : 23 ms
May 20, 2018 4:44:14 PM fr.lip6.move.gal.instantiate.DomainAnalyzer computeVariableDomains
INFO: Found a total of 1 fixed domain variables (out of 101 variables) in GAL type JoinFreeModules_PT_0020
May 20, 2018 4:44:14 PM fr.lip6.move.gal.instantiate.Simplifier printConstantVars
INFO: Found a total of 1 constant array cells/variables (out of 101 variables) in type JoinFreeModules_PT_0020
May 20, 2018 4:44:14 PM fr.lip6.move.gal.instantiate.Simplifier printConstantVars
INFO: p,
May 20, 2018 4:44:14 PM fr.lip6.move.gal.instantiate.Simplifier simplifyConstantVariables
INFO: Removed 1 constant variables :p=1
May 20, 2018 4:44:14 PM fr.lip6.move.gal.instantiate.Simplifier simplifyConstantVariables
INFO: Simplified 1 expressions due to constant valuations.
May 20, 2018 4:44:14 PM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 120 ms
May 20, 2018 4:44:14 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /mcc-data/UpperBounds.pnml.gal : 6 ms
May 20, 2018 4:44:15 PM fr.lip6.move.serialization.SerializationUtil serializePropertiesForITSTools
INFO: Time to serialize properties into /mcc-data/UpperBounds.prop : 1 ms
Invoking ITS tools like this :CommandLine [args=[/usr/share/itscl/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201804131302/bin/its-reach-linux64, --gc-threshold, 2000000, --quiet, -i, /mcc-data/UpperBounds.pnml.gal, -t, CGAL, -reachable-file, UpperBounds.prop, --nowitness], workingDir=/mcc-data]
its-reach command run as :
/usr/share/itscl/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201804131302/bin/its-reach-linux64 --gc-threshold 2000000 --quiet -i /mcc-data/UpperBounds.pnml.gal -t CGAL -reachable-file UpperBounds.prop --nowitness
Loading property file UpperBounds.prop.
Read [bounds] property : JoinFreeModules-PT-0020-UpperBounds-00 with value :p51
Read [bounds] property : JoinFreeModules-PT-0020-UpperBounds-01 with value :p46
Read [bounds] property : JoinFreeModules-PT-0020-UpperBounds-02 with value :p12
Read [bounds] property : JoinFreeModules-PT-0020-UpperBounds-03 with value :p69
Read [bounds] property : JoinFreeModules-PT-0020-UpperBounds-04 with value :p38
Read [bounds] property : JoinFreeModules-PT-0020-UpperBounds-05 with value :p14
Read [bounds] property : JoinFreeModules-PT-0020-UpperBounds-06 with value :p17
Read [bounds] property : JoinFreeModules-PT-0020-UpperBounds-07 with value :p65
Read [bounds] property : JoinFreeModules-PT-0020-UpperBounds-08 with value :p67
Read [bounds] property : JoinFreeModules-PT-0020-UpperBounds-09 with value :p30
Read [bounds] property : JoinFreeModules-PT-0020-UpperBounds-10 with value :p14
Read [bounds] property : JoinFreeModules-PT-0020-UpperBounds-11 with value :p42
Read [bounds] property : JoinFreeModules-PT-0020-UpperBounds-12 with value :p37
Read [bounds] property : JoinFreeModules-PT-0020-UpperBounds-13 with value :p77
Read [bounds] property : JoinFreeModules-PT-0020-UpperBounds-14 with value :p54
Read [bounds] property : JoinFreeModules-PT-0020-UpperBounds-15 with value :p33
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
JoinFreeModules\_PT\_0020\_flat,4.11231e+84,1.59651,29524,2,3181,5,133612,6,0,864,136990,0
Total reachable state count : 4.112314037805169803973527495950297551744e+84
Verifying 16 reachability properties.
Min sum of variable value : 0
Maximum sum along a path : 22
Bounds property JoinFreeModules-PT-0020-UpperBounds-00 :0 <= p51 <= 22
FORMULA JoinFreeModules-PT-0020-UpperBounds-00 22 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
JoinFreeModules-PT-0020-UpperBounds-00,0,1.61026,29760,1,0,7,133612,9,1,1090,136990,4
Min sum of variable value : 0
Maximum sum along a path : 22
Bounds property JoinFreeModules-PT-0020-UpperBounds-01 :0 <= p46 <= 22
FORMULA JoinFreeModules-PT-0020-UpperBounds-01 22 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
JoinFreeModules-PT-0020-UpperBounds-01,0,1.62871,29824,1,0,8,133612,10,1,1224,136990,5
Min sum of variable value : 0
Maximum sum along a path : 21
Bounds property JoinFreeModules-PT-0020-UpperBounds-02 :0 <= p12 <= 21
FORMULA JoinFreeModules-PT-0020-UpperBounds-02 21 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
JoinFreeModules-PT-0020-UpperBounds-02,0,1.65125,29824,1,0,9,133612,11,1,1425,136990,6
Min sum of variable value : 0
Maximum sum along a path : 22
Bounds property JoinFreeModules-PT-0020-UpperBounds-03 :0 <= p69 <= 22
FORMULA JoinFreeModules-PT-0020-UpperBounds-03 22 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
JoinFreeModules-PT-0020-UpperBounds-03,0,1.66029,29824,1,0,10,133612,12,1,1513,136990,7
Min sum of variable value : 0
Maximum sum along a path : 20
Bounds property JoinFreeModules-PT-0020-UpperBounds-04 :0 <= p38 <= 20
FORMULA JoinFreeModules-PT-0020-UpperBounds-04 20 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
JoinFreeModules-PT-0020-UpperBounds-04,0,1.6775,29824,1,0,11,133612,13,1,1661,136990,8
Min sum of variable value : 0
Maximum sum along a path : 22
Bounds property JoinFreeModules-PT-0020-UpperBounds-05 :0 <= p14 <= 22
FORMULA JoinFreeModules-PT-0020-UpperBounds-05 22 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
JoinFreeModules-PT-0020-UpperBounds-05,0,1.69666,29824,1,0,12,133612,14,1,1859,136990,9
Min sum of variable value : 0
Maximum sum along a path : 21
Bounds property JoinFreeModules-PT-0020-UpperBounds-06 :0 <= p17 <= 21
FORMULA JoinFreeModules-PT-0020-UpperBounds-06 21 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
JoinFreeModules-PT-0020-UpperBounds-06,0,1.71654,29824,1,0,13,133612,15,1,2050,136990,10
Min sum of variable value : 0
Maximum sum along a path : 23
Bounds property JoinFreeModules-PT-0020-UpperBounds-07 :0 <= p65 <= 23
FORMULA JoinFreeModules-PT-0020-UpperBounds-07 23 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
JoinFreeModules-PT-0020-UpperBounds-07,0,1.72449,29824,1,0,14,133612,16,1,2147,136990,11
Min sum of variable value : 0
Maximum sum along a path : 21
Bounds property JoinFreeModules-PT-0020-UpperBounds-08 :0 <= p67 <= 21
FORMULA JoinFreeModules-PT-0020-UpperBounds-08 21 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
JoinFreeModules-PT-0020-UpperBounds-08,0,1.73428,29824,1,0,15,133612,17,1,2238,136990,12
Min sum of variable value : 0
Maximum sum along a path : 23
Bounds property JoinFreeModules-PT-0020-UpperBounds-09 :0 <= p30 <= 23
FORMULA JoinFreeModules-PT-0020-UpperBounds-09 23 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
JoinFreeModules-PT-0020-UpperBounds-09,0,1.75012,29824,1,0,16,133612,18,1,2405,136990,13
Min sum of variable value : 0
Maximum sum along a path : 22
Bounds property JoinFreeModules-PT-0020-UpperBounds-10 :0 <= p14 <= 22
FORMULA JoinFreeModules-PT-0020-UpperBounds-10 22 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
JoinFreeModules-PT-0020-UpperBounds-10,0,1.75042,29824,1,0,16,133612,18,1,2405,136990,13
Min sum of variable value : 0
Maximum sum along a path : 21
Bounds property JoinFreeModules-PT-0020-UpperBounds-11 :0 <= p42 <= 21
FORMULA JoinFreeModules-PT-0020-UpperBounds-11 21 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
JoinFreeModules-PT-0020-UpperBounds-11,0,1.76549,29824,1,0,17,133612,19,1,2546,136990,14
Min sum of variable value : 0
Maximum sum along a path : 21
Bounds property JoinFreeModules-PT-0020-UpperBounds-12 :0 <= p37 <= 21
FORMULA JoinFreeModules-PT-0020-UpperBounds-12 21 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
JoinFreeModules-PT-0020-UpperBounds-12,0,1.78305,29824,1,0,18,133612,20,1,2697,136990,15
Min sum of variable value : 0
Maximum sum along a path : 21
Bounds property JoinFreeModules-PT-0020-UpperBounds-13 :0 <= p77 <= 21
FORMULA JoinFreeModules-PT-0020-UpperBounds-13 21 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
JoinFreeModules-PT-0020-UpperBounds-13,0,1.79112,29824,1,0,19,133612,21,1,2768,136990,16
Min sum of variable value : 0
Maximum sum along a path : 22
Bounds property JoinFreeModules-PT-0020-UpperBounds-14 :0 <= p54 <= 22
FORMULA JoinFreeModules-PT-0020-UpperBounds-14 22 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
JoinFreeModules-PT-0020-UpperBounds-14,0,1.8034,29824,1,0,20,133612,22,1,2886,136990,17
Min sum of variable value : 0
Maximum sum along a path : 20
Bounds property JoinFreeModules-PT-0020-UpperBounds-15 :0 <= p33 <= 20
FORMULA JoinFreeModules-PT-0020-UpperBounds-15 20 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
JoinFreeModules-PT-0020-UpperBounds-15,0,1.82318,29824,1,0,21,133612,23,1,3044,136990,18
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="JoinFreeModules-PT-0020"
export BK_EXAMINATION="UpperBounds"
export BK_TOOL="mcc4mcc-structural"
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/JoinFreeModules-PT-0020.tgz
mv JoinFreeModules-PT-0020 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 mcc4mcc-structural"
echo " Input is JoinFreeModules-PT-0020, 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 r107-smll-152658637600254"
echo "====================================================================="
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 ;