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 200K
-rw-r--r-- 1 mcc users 3.8K May 30 20:28 CTLCardinality.txt
-rw-r--r-- 1 mcc users 22K May 30 20:28 CTLCardinality.xml
-rw-r--r-- 1 mcc users 2.1K May 29 14:00 CTLFireability.txt
-rw-r--r-- 1 mcc users 13K May 29 14:00 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K May 24 11:17 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.3K May 24 11:17 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 2.7K May 28 09:42 LTLCardinality.txt
-rw-r--r-- 1 mcc users 13K May 28 09:42 LTLCardinality.xml
-rw-r--r-- 1 mcc users 1.9K May 28 07:53 LTLFireability.txt
-rw-r--r-- 1 mcc users 9.1K May 28 07:53 LTLFireability.xml
-rw-r--r-- 1 mcc users 1 May 24 11:17 NewModel
-rw-r--r-- 1 mcc users 3.4K May 28 06:09 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 18K May 28 06:09 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 110 May 26 06:29 ReachabilityDeadlock.txt
-rw-r--r-- 1 mcc users 348 May 26 06:29 ReachabilityDeadlock.xml
-rw-r--r-- 1 mcc users 2.6K May 27 03:34 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 15K May 27 03:34 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K May 28 07:31 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K May 28 07:31 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 24 11:17 equiv_col
-rw-r--r-- 1 mcc users 4 May 24 11:17 instance
-rw-r--r-- 1 mcc users 6 May 24 11:17 iscolored
-rw-r--r-- 1 mcc users 28K May 24 11:17 model.pnml
=====================================================================
Generated by BenchKit 2-3637
Executing tool itstoolsl
Input is DiscoveryGPU-PT-08a, examination is CTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r285-csrt-152749175700040
=====================================================================

--------------------
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 DiscoveryGPU-PT-08a-CTLFireability-00
FORMULA_NAME DiscoveryGPU-PT-08a-CTLFireability-01
FORMULA_NAME DiscoveryGPU-PT-08a-CTLFireability-02
FORMULA_NAME DiscoveryGPU-PT-08a-CTLFireability-03
FORMULA_NAME DiscoveryGPU-PT-08a-CTLFireability-04
FORMULA_NAME DiscoveryGPU-PT-08a-CTLFireability-05
FORMULA_NAME DiscoveryGPU-PT-08a-CTLFireability-06
FORMULA_NAME DiscoveryGPU-PT-08a-CTLFireability-07
FORMULA_NAME DiscoveryGPU-PT-08a-CTLFireability-08
FORMULA_NAME DiscoveryGPU-PT-08a-CTLFireability-09
FORMULA_NAME DiscoveryGPU-PT-08a-CTLFireability-10
FORMULA_NAME DiscoveryGPU-PT-08a-CTLFireability-11
FORMULA_NAME DiscoveryGPU-PT-08a-CTLFireability-12
FORMULA_NAME DiscoveryGPU-PT-08a-CTLFireability-13
FORMULA_NAME DiscoveryGPU-PT-08a-CTLFireability-14
FORMULA_NAME DiscoveryGPU-PT-08a-CTLFireability-15

=== Now, execution of the tool begins

BK_START 1527986020461

Invoking ITS tools like this :CommandLine [args=[/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201805241334/bin/its-ctl-linux64, --gc-threshold, 2000000, --quiet, -i, /home/mcc/execution/CTLFireability.pnml.gal, -t, CGAL, -ctl, /home/mcc/execution/CTLFireability.ctl], workingDir=/home/mcc/execution]

its-ctl command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201805241334/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -i /home/mcc/execution/CTLFireability.pnml.gal -t CGAL -ctl /home/mcc/execution/CTLFireability.ctl
No direction supplied, using forward translation only.
Parsed 16 CTL formulae.
built 17 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,2.14359e+08,0.062943,5556,27,31,1259,478,195,1354,54,3010,0


Converting to forward existential form...Done !
original formula: AG(!((!((((u2.p20>=1)&&(u9.p81>=1))&&((u8.p75>=1)&&(u9.p81>=1)))) * EX((u3.p23>=1)))))
=> equivalent forward existential formula: [(EY((FwdU(Init,TRUE) * !((((u2.p20>=1)&&(u9.p81>=1))&&((u8.p75>=1)&&(u9.p81>=1)))))) * (u3.p23>=1))] = FALSE
(forward)formula 0,0,0.069847,5556,1,0,1259,478,289,1354,100,3010,338
FORMULA DiscoveryGPU-PT-08a-CTLFireability-00 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !

***************************************

original formula: E((((u7.p66>=1)||((u3.p28>=1)||((u4.p37>=1)&&(u9.p81>=1))))||(!(((u6.p59>=1)&&(u9.p81>=1))&&((u5.p47>=1)&&(u9.p81>=1))))) U (u1.p1>=1))
=> equivalent forward existential formula: [(FwdU(Init,(((u7.p66>=1)||((u3.p28>=1)||((u4.p37>=1)&&(u9.p81>=1))))||(!(((u6.p59>=1)&&(u9.p81>=1))&&((u5.p47>=1)&&(u9.p81>=1)))))) * (u1.p1>=1))] != FALSE
(forward)formula 1,1,0.140166,8580,1,0,8397,1246,353,8315,109,9257,8452
FORMULA DiscoveryGPU-PT-08a-CTLFireability-01 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !

***************************************

original formula: EF(((u5.p43>=1)&&(u10.p82>=1)))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * ((u5.p43>=1)&&(u10.p82>=1)))] != FALSE
(forward)formula 2,1,0.140962,9108,1,0,8405,1246,356,8323,109,9257,8461
FORMULA DiscoveryGPU-PT-08a-CTLFireability-02 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !

***************************************

original formula: !(EF(AG((u4.p38>=1))))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * !(E(TRUE U !((u4.p38>=1)))))] = FALSE
Reverse transition relation is NOT exact ! Due to transitions u1.t105, u1.t106, u2.t103, u2.t104, u3.t107, u3.t108, u4.t101, u4.t102, u5.t109, u5.t110, u6.t99, u6.t100, u7.t111, u7.t112, u8.t97, u8.t98, Intersection with reachable at each step enabled. (destroyed/reverse/intersect/total) :0/97/16/113
(forward)formula 3,1,0.156325,9372,1,0,9440,1622,1001,9458,285,10444,11340
FORMULA DiscoveryGPU-PT-08a-CTLFireability-03 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !

***************************************

original formula: !(AG(EF((((u3.p26>=1)&&(u9.p81>=1))&&((u4.p39>=1)&&(u9.p81>=1))))))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * !(E(TRUE U (((u3.p26>=1)&&(u9.p81>=1))&&((u4.p39>=1)&&(u9.p81>=1))))))] != FALSE
(forward)formula 4,1,0.159769,9636,1,0,9608,1673,1010,9654,285,10539,11655
FORMULA DiscoveryGPU-PT-08a-CTLFireability-04 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !

***************************************

original formula: EF(EG(((u4.p36>=1)&&(u9.p81>=1))))
=> equivalent forward existential formula: [FwdG(FwdU(Init,TRUE),((u4.p36>=1)&&(u9.p81>=1)))] != FALSE
Using saturation style SCC detection
Using saturation style SCC detection
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
Fast SCC detection found an SCC at level 9
Fast SCC detection found an SCC at level 10
(forward)formula 5,1,0.178188,9636,1,0,10143,1758,1079,10496,295,12086,12290
FORMULA DiscoveryGPU-PT-08a-CTLFireability-05 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !

***************************************

original formula: EF(AG(((u8.p75>=1)&&(u9.p81>=1))))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * !(E(TRUE U !(((u8.p75>=1)&&(u9.p81>=1))))))] != FALSE
(forward)formula 6,0,0.179207,9900,1,0,10147,1791,1080,10503,295,12151,12305
FORMULA DiscoveryGPU-PT-08a-CTLFireability-06 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !

***************************************

original formula: (((u4.p36>=1)&&(u9.p81>=1)) + EF((u8.p74>=1)))
=> equivalent forward existential formula: ([(Init * ((u4.p36>=1)&&(u9.p81>=1)))] != FALSE + [(FwdU(Init,TRUE) * (u8.p74>=1))] != FALSE)
(forward)formula 7,1,0.179773,9900,1,0,10150,1791,1082,10504,295,12151,12312
FORMULA DiscoveryGPU-PT-08a-CTLFireability-07 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !

***************************************

original formula: EF(E(((u2.p12>=1)&&(u9.p81>=1)) U (((u6.p52>=1)&&(u9.p81>=1))||(u6.p51>=1))))
=> equivalent forward existential formula: [(FwdU(FwdU(Init,TRUE),((u2.p12>=1)&&(u9.p81>=1))) * (((u6.p52>=1)&&(u9.p81>=1))||(u6.p51>=1)))] != FALSE
(forward)formula 8,1,0.182605,9900,1,0,10211,1791,1130,10588,295,12185,12475
FORMULA DiscoveryGPU-PT-08a-CTLFireability-08 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !

***************************************

original formula: ((AG(!((((u2.p12>=1)&&(u9.p81>=1))&&((u3.p29>=1)&&(u9.p81>=1))))) + EF(AG((u11.p0>=1)))) + E(((!((u1.p7>=1)&&(u9.p81>=1)))||(((u3.p28>=1)&&(u10.p82>=1))||(u1.p8>=1))) U AG(((u4.p36>=1)&&(u9.p81>=1)))))
=> equivalent forward existential formula: [(FwdU(((Init * !(E(((!((u1.p7>=1)&&(u9.p81>=1)))||(((u3.p28>=1)&&(u10.p82>=1))||(u1.p8>=1))) U !(E(TRUE U !(((u4.p36>=1)&&(u9.p81>=1)))))))) * !(E(TRUE U !(E(TRUE U !((u11.p0>=1))))))),TRUE) * (((u2.p12>=1)&&(u9.p81>=1))&&((u3.p29>=1)&&(u9.p81>=1))))] = FALSE
(forward)formula 9,0,0.213491,10164,1,0,11223,1846,1192,11689,296,13446,13809
FORMULA DiscoveryGPU-PT-08a-CTLFireability-09 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !

***************************************

original formula: AG(EF(((u1.p9>=1)&&(u9.p81>=1))))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * !(E(TRUE U ((u1.p9>=1)&&(u9.p81>=1)))))] = FALSE
(forward)formula 10,0,0.229716,10428,1,0,11370,1849,1195,11856,296,13458,14054
FORMULA DiscoveryGPU-PT-08a-CTLFireability-10 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !

***************************************

original formula: AG(!(A(((u6.p54>=1)&&(u10.p82>=1)) U (u8.p74>=1))))
=> equivalent forward existential formula: [((FwdU(Init,TRUE) * !(EG(!((u8.p74>=1))))) * !(E(!((u8.p74>=1)) U (!(((u6.p54>=1)&&(u10.p82>=1))) * !((u8.p74>=1))))))] = FALSE
(forward)formula 11,0,0.298464,12276,1,0,15149,2898,1221,16822,298,19758,17622
FORMULA DiscoveryGPU-PT-08a-CTLFireability-11 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !

***************************************

original formula: AG(!(E(((u5.p50>=1)&&(u9.p81>=1)) U ((u8.p73>=1)&&(u10.p82>=1)))))
=> equivalent forward existential formula: [(FwdU(FwdU(Init,TRUE),((u5.p50>=1)&&(u9.p81>=1))) * ((u8.p73>=1)&&(u10.p82>=1)))] = FALSE
(forward)formula 12,0,0.301461,12540,1,0,15175,2898,1256,16862,298,19762,17712
FORMULA DiscoveryGPU-PT-08a-CTLFireability-12 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !

***************************************

original formula: EF(((u3.p22>=1)&&(u9.p81>=1)))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * ((u3.p22>=1)&&(u9.p81>=1)))] != FALSE
(forward)formula 13,1,0.302078,12540,1,0,15178,2898,1259,16873,298,19762,17726
FORMULA DiscoveryGPU-PT-08a-CTLFireability-13 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !

***************************************

original formula: AX(AG(EF((u7.p63>=1))))
=> equivalent forward existential formula: [(FwdU(EY(Init),TRUE) * !(E(TRUE U (u7.p63>=1))))] = FALSE
(forward)formula 14,0,0.304504,12540,1,0,15237,2956,1260,16981,298,19959,17980
FORMULA DiscoveryGPU-PT-08a-CTLFireability-14 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is FALSE !

***************************************

original formula: EF(((((!((u6.p60>=1)&&(u9.p81>=1)))||(!((u7.p66>=1)&&(u9.p81>=1))))&&((((u6.p53>=1)&&(u10.p82>=1))||((u4.p32>=1)&&(u9.p81>=1)))&&(!(u1.p6>=1)))) * EG((((u8.p74>=1)&&(u10.p82>=1))&&((u5.p49>=1)&&(u9.p81>=1))))))
=> equivalent forward existential formula: [FwdG((FwdU(Init,TRUE) * (((!((u6.p60>=1)&&(u9.p81>=1)))||(!((u7.p66>=1)&&(u9.p81>=1))))&&((((u6.p53>=1)&&(u10.p82>=1))||((u4.p32>=1)&&(u9.p81>=1)))&&(!(u1.p6>=1))))),(((u8.p74>=1)&&(u10.p82>=1))&&((u5.p49>=1)&&(u9.p81>=1))))] != FALSE
(forward)formula 15,1,0.315245,12804,1,0,15891,2998,1306,17814,299,20774,19150
FORMULA DiscoveryGPU-PT-08a-CTLFireability-15 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL USE_NUPN
Formula is TRUE !

***************************************


BK_STOP 1527986025982

--------------------
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 CTLFireability -its -ltsminpath /home/mcc/BenchKit//lts_install_dir/ -louvain -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 CTLFireability -z3path /home/mcc/BenchKit//z3/bin/z3 -yices2path /home/mcc/BenchKit//yices/bin/yices -its -ltsminpath /home/mcc/BenchKit//lts_install_dir/ -louvain -smt -vmargs -Dosgi.locking=none -Declipse.stateSaveDelayInterval=-1 -Dosgi.configuration.area=/tmp/.eclipse -Xss8m -Xms40m -Xmx8192m -Dfile.encoding=UTF-8 -Dosgi.requiredJavaVersion=1.6
Jun 03, 2018 12:33:44 AM fr.lip6.move.gal.application.Application start
INFO: Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, CTLFireability, -z3path, /home/mcc/BenchKit//z3/bin/z3, -yices2path, /home/mcc/BenchKit//yices/bin/yices, -its, -ltsminpath, /home/mcc/BenchKit//lts_install_dir/, -louvain, -smt]
Jun 03, 2018 12:33:44 AM fr.lip6.move.gal.application.MccTranslator transformPNML
INFO: Parsing pnml file : /home/mcc/execution/model.pnml
Jun 03, 2018 12:33:44 AM fr.lip6.move.gal.nupn.PTNetReader loadFromXML
INFO: Load time of PNML (sax parser for PT used): 97 ms
Jun 03, 2018 12:33:44 AM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 83 places.
Jun 03, 2018 12:33:44 AM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 113 transitions.
Jun 03, 2018 12:33:44 AM fr.lip6.move.gal.pnml.togal.PnmlToGalTransformer transform
INFO: Found NUPN structural information;
Jun 03, 2018 12:33:44 AM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/model.pnml.img.gal : 31 ms
Jun 03, 2018 12:33:44 AM fr.lip6.move.gal.application.MccTranslator applyOrder
INFO: Applying decomposition
Jun 03, 2018 12:33:44 AM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 76 ms
Jun 03, 2018 12:33:45 AM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 18 ms
Jun 03, 2018 12:33:45 AM fr.lip6.move.gal.instantiate.CompositeBuilder decomposeWithOrder
INFO: Decomposing Gal with order
Jun 03, 2018 12:33:45 AM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 15 ms
Jun 03, 2018 12:33:45 AM fr.lip6.move.gal.instantiate.CompositeBuilder rewriteArraysToAllowPartition
INFO: Rewriting arrays to variables to allow decomposition.
Jun 03, 2018 12:33:45 AM fr.lip6.move.gal.instantiate.Instantiator fuseIsomorphicEffects
INFO: Removed a total of 70 redundant transitions.
Jun 03, 2018 12:33:45 AM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/CTLFireability.pnml.gal : 4 ms
Jun 03, 2018 12:33:45 AM fr.lip6.move.serialization.SerializationUtil serializePropertiesForITSCTLTools
INFO: Time to serialize properties into /home/mcc/execution/CTLFireability.ctl : 3 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="DiscoveryGPU-PT-08a"
export BK_EXAMINATION="CTLFireability"
export BK_TOOL="itstoolsl"
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/DiscoveryGPU-PT-08a.tgz
mv DiscoveryGPU-PT-08a 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 itstoolsl"
echo " Input is DiscoveryGPU-PT-08a, examination is CTLFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r285-csrt-152749175700040"
echo "====================================================================="
echo
echo "--------------------"
echo "content from stdout:"
echo
echo "=== Data for post analysis generated by BenchKit (invocation template)"
echo
if [ "CTLFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "CTLFireability" != "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 "CTLFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property CTLFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "CTLFireability.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 '' CTLFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
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 ;