About the Execution of Irma.full for UtahNoC-PT-none
Execution Summary | |||||
Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
931.730 | 27508.00 | 38966.00 | 957.10 | TFFTTFFFTFTTFFFF | 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 372K
-rw-r--r-- 1 mcc users 3.2K May 15 18:54 CTLCardinality.txt
-rw-r--r-- 1 mcc users 18K May 15 18:54 CTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K May 15 18:54 CTLFireability.txt
-rw-r--r-- 1 mcc users 16K 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 2.4K 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 1.8K May 15 18:54 LTLFireability.txt
-rw-r--r-- 1 mcc users 9.2K May 15 18:54 LTLFireability.xml
-rw-r--r-- 1 mcc users 3.3K May 15 18:54 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 17K May 15 18:54 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 106 May 15 18:54 ReachabilityDeadlock.txt
-rw-r--r-- 1 mcc users 344 May 15 18:54 ReachabilityDeadlock.xml
-rw-r--r-- 1 mcc users 2.7K May 15 18:54 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 17K May 15 18:54 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K May 15 18:54 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K 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 205K May 15 18:50 model.pnml
=====================================================================
Generated by BenchKit 2-3637
Executing tool irma4mcc-full
Input is UtahNoC-PT-none, examination is CTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r174-smll-152708745200416
=====================================================================
--------------------
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 UtahNoC-PT-none-CTLCardinality-00
FORMULA_NAME UtahNoC-PT-none-CTLCardinality-01
FORMULA_NAME UtahNoC-PT-none-CTLCardinality-02
FORMULA_NAME UtahNoC-PT-none-CTLCardinality-03
FORMULA_NAME UtahNoC-PT-none-CTLCardinality-04
FORMULA_NAME UtahNoC-PT-none-CTLCardinality-05
FORMULA_NAME UtahNoC-PT-none-CTLCardinality-06
FORMULA_NAME UtahNoC-PT-none-CTLCardinality-07
FORMULA_NAME UtahNoC-PT-none-CTLCardinality-08
FORMULA_NAME UtahNoC-PT-none-CTLCardinality-09
FORMULA_NAME UtahNoC-PT-none-CTLCardinality-10
FORMULA_NAME UtahNoC-PT-none-CTLCardinality-11
FORMULA_NAME UtahNoC-PT-none-CTLCardinality-12
FORMULA_NAME UtahNoC-PT-none-CTLCardinality-13
FORMULA_NAME UtahNoC-PT-none-CTLCardinality-14
FORMULA_NAME UtahNoC-PT-none-CTLCardinality-15
=== Now, execution of the tool begins
BK_START 1527192836574
BK_STOP 1527192864082
--------------------
content from stderr:
Prefix is 65b80f64.
Reading known information in /usr/share/mcc4mcc/65b80f64-known.json.
Reading learned information in /usr/share/mcc4mcc/65b80f64-learned.json.
Reading value translations in /usr/share/mcc4mcc/65b80f64-values.json.
Using directory /home/mcc/execution for input, as it contains a model.pnml file.
Using UtahNoC-PT-none as instance name.
Using UtahNoC as model name.
Using algorithm or tool bmdt.
Model characteristics are: {'Examination': 'CTLCardinality', 'Place/Transition': True, 'Colored': False, 'Relative-Time': 1, 'Relative-Memory': 1, 'Ordinary': True, 'Simple Free Choice': False, 'Extended Free Choice': False, 'State Machine': False, 'Marked Graph': False, 'Connected': True, 'Strongly Connected': False, 'Source Place': True, 'Sink Place': False, 'Source Transition': False, 'Sink Transition': False, 'Loop Free': False, 'Conservative': False, 'Sub-Conservative': False, 'Nested Units': True, 'Safe': True, 'Deadlock': None, 'Reversible': None, 'Quasi Live': True, 'Live': None}.
Known tools are: [{'Time': 12744, 'Memory': 387.32, 'Tool': 'itstools'}, {'Time': 13824, 'Memory': 389.05, 'Tool': 'itstools'}, {'Time': 93786, 'Memory': 1284.2, 'Tool': 'gspn'}, {'Time': 98147, 'Memory': 1316.82, 'Tool': 'gspn'}, {'Time': 290629, 'Memory': 4362.51, 'Tool': 'marcie'}, {'Time': 339312, 'Memory': 4362.88, 'Tool': 'marcie'}, {'Time': 2162040, 'Memory': 12093.4, 'Tool': 'lola'}, {'Time': 2163052, 'Memory': 11770.08, 'Tool': 'lola'}].
Learned tools are: [{'Tool': 'lola'}].
Learned tool lola is 169.65160075329567x far from the best tool itstools.
CTLCardinality itstools UtahNoC-PT-none...
May 24, 2018 8:14:07 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, CTLCardinality]
May 24, 2018 8:14:07 PM fr.lip6.move.gal.application.MccTranslator transformPNML
INFO: Parsing pnml file : /mcc-data/model.pnml
May 24, 2018 8:14:07 PM fr.lip6.move.gal.nupn.PTNetReader loadFromXML
INFO: Load time of PNML (sax parser for PT used): 163 ms
May 24, 2018 8:14:07 PM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 216 places.
May 24, 2018 8:14:07 PM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 977 transitions.
May 24, 2018 8:14:07 PM fr.lip6.move.gal.pnml.togal.PnmlToGalTransformer transform
INFO: Found NUPN structural information;
May 24, 2018 8:14:07 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /mcc-data/model.pnml.img.gal : 46 ms
May 24, 2018 8:14:08 PM fr.lip6.move.gal.application.MccTranslator applyOrder
INFO: Applying decomposition
May 24, 2018 8:14:08 PM fr.lip6.move.gal.instantiate.CompositeBuilder decomposeWithOrder
INFO: Decomposing Gal with order
May 24, 2018 8:14:08 PM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 312 ms
May 24, 2018 8:14:08 PM fr.lip6.move.gal.instantiate.CompositeBuilder rewriteArraysToAllowPartition
INFO: Rewriting arrays to variables to allow decomposition.
May 24, 2018 8:14:08 PM fr.lip6.move.gal.instantiate.Instantiator fuseIsomorphicEffects
INFO: Removed a total of 728 redundant transitions.
May 24, 2018 8:14:08 PM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /mcc-data/CTLCardinality.pnml.gal : 13 ms
May 24, 2018 8:14:08 PM fr.lip6.move.serialization.SerializationUtil serializePropertiesForITSCTLTools
INFO: Time to serialize properties into /mcc-data/CTLCardinality.ctl : 3 ms
Invoking ITS tools like this :CommandLine [args=[/usr/share/itscl/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201804131302/bin/its-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /mcc-data/CTLCardinality.pnml.gal, -t, CGAL, -ctl, /mcc-data/CTLCardinality.ctl], workingDir=/mcc-data]
its-ctl command run as :
/usr/share/itscl/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201804131302/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /mcc-data/CTLCardinality.pnml.gal -t CGAL -ctl /mcc-data/CTLCardinality.ctl
No direction supplied, using forward translation only.
Parsed 16 CTL formulae.
built 12 ordering constraints for composite.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
reachable,4.75992e+09,0.97276,23952,152,458,25209,15102,838,42650,337,95478,0
Converting to forward existential form...Done !
original formula: !(EF(((u5.p133>=1)&&(((u3.p28==0)||(u5.p123==1))&&(u7.p190>=2)))))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * ((u5.p133>=1)&&(((u3.p28==0)||(u5.p123==1))&&(u7.p190>=2))))] = FALSE
(forward)formula 0,1,0.973864,23952,1,0,25209,15102,852,42650,341,95478,0
FORMULA UtahNoC-PT-none-CTLCardinality-00 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !
***************************************
original formula: EG((EF((u7.p169>=3)) + AG((u3.p21>=3))))
=> equivalent forward existential formula: [FwdG(Init,(E(TRUE U (u7.p169>=3)) + !(E(TRUE U !((u3.p21>=3))))))] != FALSE
Reverse transition relation is NOT exact ! Due to transitions u3.t11, u3.t15, u3.t19, u3.t153, u3.t155, u3.t157, u4.t31, u4.t35, u4.t39, u4.t141, u4.t143, u4.t145, u5.t51, u5.t55, u5.t59, u5.t129, u5.t131, u5.t133, u6.t62, u6.t63, u6.t65, u6.t112, u6.t116, u6.t118, u7.t68, u7.t69, u7.t71, u7.t96, u7.t100, u7.t102, u8.t74, u8.t75, u8.t77, u8.t80, u8.t84, u8.t86, Intersection with reachable at each step enabled. (destroyed/reverse/intersect/total) :148/811/18/977
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Using saturation style SCC detection
Fast SCC detection found an SCC at level 2
Fast SCC detection found an SCC at level 3
Fast SCC detection found an SCC at level 4
Fast SCC detection found an SCC at level 5
Fast SCC detection found an SCC at level 6
Fast SCC detection found an SCC at level 7
Fast SCC detection found an SCC at level 8
(forward)formula 1,0,1.30962,23952,1,0,25209,15102,4185,42650,3003,95478,73363
FORMULA UtahNoC-PT-none-CTLCardinality-01 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !
***************************************
original formula: EF((AG(((u3.p28==0)||(u6.p158==1))) * EX(((u4.p52==0)||(u6.p162==1)))))
=> equivalent forward existential formula: [(EY((FwdU(Init,TRUE) * !(E(TRUE U !(((u3.p28==0)||(u6.p158==1))))))) * ((u4.p52==0)||(u6.p162==1)))] != FALSE
(forward)formula 2,0,1.37796,23952,1,0,25209,15446,4194,42650,3006,95478,79839
FORMULA UtahNoC-PT-none-CTLCardinality-02 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !
***************************************
original formula: (((u5.p125==0)||(u5.p109==1)) * AX(EF((u5.p121>=1))))
=> equivalent forward existential formula: ([(Init * !(((u5.p125==0)||(u5.p109==1))))] = FALSE * [(EY(Init) * !(E(TRUE U (u5.p121>=1))))] = FALSE)
(forward)formula 3,1,1.42717,23952,1,0,25209,18254,4202,42650,3012,95478,84275
FORMULA UtahNoC-PT-none-CTLCardinality-03 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !
***************************************
original formula: AF(!(EF((u6.p151>=2))))
=> equivalent forward existential formula: [FwdG(Init,!(!(E(TRUE U (u6.p151>=2)))))] = FALSE
(forward)formula 4,1,1.42762,23952,1,0,25209,18254,4204,42650,3013,95478,84309
FORMULA UtahNoC-PT-none-CTLCardinality-04 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !
***************************************
original formula: (((((!(u5.p113>=3))||(((u8.p213==0)||(u3.p22==1))||((u5.p96==0)||(u4.p57==1))))&&(u3.p21>=3)) + ((u6.p144>=2) * EF((u1.p1>=1)))) + EF((((u5.p96>=2)&&(u7.p173>=1))&&(!((u7.p170==0)||(u3.p27==1))))))
=> equivalent forward existential formula: (([(Init * (((!(u5.p113>=3))||(((u8.p213==0)||(u3.p22==1))||((u5.p96==0)||(u4.p57==1))))&&(u3.p21>=3)))] != FALSE + [(FwdU((Init * (u6.p144>=2)),TRUE) * (u1.p1>=1))] != FALSE) + [(FwdU(Init,TRUE) * (((u5.p96>=2)&&(u7.p173>=1))&&(!((u7.p170==0)||(u3.p27==1)))))] != FALSE)
(forward)formula 5,0,1.43401,23952,1,0,25209,18505,4241,42650,3024,95478,84697
FORMULA UtahNoC-PT-none-CTLCardinality-05 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !
***************************************
original formula: EF(((u8.p204>=3)&&((u6.p162==0)||(u3.p43==1))))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * ((u8.p204>=3)&&((u6.p162==0)||(u3.p43==1))))] != FALSE
(forward)formula 6,0,1.43447,23952,1,0,25209,18505,4250,42650,3027,95478,84697
FORMULA UtahNoC-PT-none-CTLCardinality-06 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !
***************************************
original formula: AX(EF((u6.p137>=3)))
=> equivalent forward existential formula: [(EY(Init) * !(E(TRUE U (u6.p137>=3))))] = FALSE
(forward)formula 7,0,1.43512,23952,1,0,25209,18505,4252,42650,3028,95478,84735
FORMULA UtahNoC-PT-none-CTLCardinality-07 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !
***************************************
original formula: !(AG((((u5.p132==0)||(u5.p120==1))||(((u8.p202==0)||(u8.p207==1))||((u4.p51==0)||(u3.p24==1))))))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * !((((u5.p132==0)||(u5.p120==1))||(((u8.p202==0)||(u8.p207==1))||((u4.p51==0)||(u3.p24==1))))))] != FALSE
(forward)formula 8,1,1.44162,23952,1,0,25209,18804,4272,42650,3035,95478,85061
FORMULA UtahNoC-PT-none-CTLCardinality-08 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !
***************************************
original formula: EF((u6.p141>=2))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * (u6.p141>=2))] != FALSE
(forward)formula 9,0,1.44214,23952,1,0,25209,18804,4274,42650,3036,95478,85061
FORMULA UtahNoC-PT-none-CTLCardinality-09 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !
***************************************
original formula: E(AF(((u3.p27==0)||(u3.p13==1))) U EG((u7.p185>=1)))
=> equivalent forward existential formula: [FwdG(FwdU(Init,!(EG(!(((u3.p27==0)||(u3.p13==1)))))),(u7.p185>=1))] != FALSE
(forward)formula 10,1,12.2406,258564,1,0,278809,238513,4425,397320,3306,1.47716e+06,235618
FORMULA UtahNoC-PT-none-CTLCardinality-10 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !
***************************************
original formula: AG(!((u4.p69>=2)))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * (u4.p69>=2))] = FALSE
(forward)formula 11,1,12.2413,258564,1,0,278809,238513,4427,397320,3307,1.47716e+06,235618
FORMULA UtahNoC-PT-none-CTLCardinality-11 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !
***************************************
original formula: AG(E((u4.p74>=1) U ((u5.p129==0)||(u1.p1==1))))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * !(E((u4.p74>=1) U ((u5.p129==0)||(u1.p1==1)))))] = FALSE
(forward)formula 12,0,12.2793,259620,1,0,279679,239787,4454,399401,3309,1.48263e+06,237259
FORMULA UtahNoC-PT-none-CTLCardinality-12 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !
***************************************
original formula: EX(EF(((u6.p161>=2)&&(u6.p143>=2))))
=> equivalent forward existential formula: [(FwdU(EY(Init),TRUE) * ((u6.p161>=2)&&(u6.p143>=2)))] != FALSE
(forward)formula 13,0,12.2799,259884,1,0,279679,239787,4460,399401,3311,1.48263e+06,237259
FORMULA UtahNoC-PT-none-CTLCardinality-13 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !
***************************************
original formula: ((A(((u7.p183==0)||(u5.p118==1)) U ((u8.p214==0)||(u8.p213==1))) * (!((((u5.p107==0)||(u3.p19==1))&&(u1.p3>=1))) + AF((u8.p215>=1)))) * E((((u8.p200==0)||(u5.p106==1))||(u3.p26>=2)) U ((u4.p75>=3)&&((u7.p182==0)||(u4.p54==1)))))
=> equivalent forward existential formula: ((([(FwdU(Init,!(((u8.p214==0)||(u8.p213==1)))) * (!(((u7.p183==0)||(u5.p118==1))) * !(((u8.p214==0)||(u8.p213==1)))))] = FALSE * [FwdG(Init,!(((u8.p214==0)||(u8.p213==1))))] = FALSE) * [FwdG((Init * !(!((((u5.p107==0)||(u3.p19==1))&&(u1.p3>=1))))),!((u8.p215>=1)))] = FALSE) * [(Init * !(E((((u8.p200==0)||(u5.p106==1))||(u3.p26>=2)) U ((u4.p75>=3)&&((u7.p182==0)||(u4.p54==1))))))] = FALSE)
(forward)formula 14,0,12.2873,259884,1,0,279710,240004,4488,399609,3316,1.48336e+06,237762
FORMULA UtahNoC-PT-none-CTLCardinality-14 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !
***************************************
original formula: AF(AG((((u3.p28==0)||(u6.p160==1))||((u4.p50==0)||(u3.p18==1)))))
=> equivalent forward existential formula: [FwdG(Init,!(!(E(TRUE U !((((u3.p28==0)||(u6.p160==1))||((u4.p50==0)||(u3.p18==1))))))))] = FALSE
(forward)formula 15,0,13.384,280740,1,0,311416,250490,4532,450147,3319,1.5789e+06,293168
FORMULA UtahNoC-PT-none-CTLCardinality-15 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !
***************************************
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="UtahNoC-PT-none"
export BK_EXAMINATION="CTLCardinality"
export BK_TOOL="irma4mcc-full"
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/UtahNoC-PT-none.tgz
mv UtahNoC-PT-none 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 irma4mcc-full"
echo " Input is UtahNoC-PT-none, examination is CTLCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r174-smll-152708745200416"
echo "====================================================================="
echo
echo "--------------------"
echo "content from stdout:"
echo
echo "=== Data for post analysis generated by BenchKit (invocation template)"
echo
if [ "CTLCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "CTLCardinality" != "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 "CTLCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property CTLCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "CTLCardinality.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 ;