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-155246554900717.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 HouseConstruction-PT-08000, examination is LTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r085-csrt-155246554900717
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 184K
-rw-r--r-- 1 mcc users 3.6K Feb 11 01:49 CTLCardinality.txt
-rw-r--r-- 1 mcc users 20K Feb 11 01:49 CTLCardinality.xml
-rw-r--r-- 1 mcc users 2.7K Feb 7 01:39 CTLFireability.txt
-rw-r--r-- 1 mcc users 19K Feb 7 01:39 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K Mar 10 17:31 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.0K Mar 10 17:31 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 113 Feb 24 15:05 GlobalProperties.txt
-rw-r--r-- 1 mcc users 351 Feb 24 15:05 GlobalProperties.xml
-rw-r--r-- 1 mcc users 2.6K Feb 5 00:00 LTLCardinality.txt
-rw-r--r-- 1 mcc users 12K Feb 5 00:00 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.0K Feb 4 22:36 LTLFireability.txt
-rw-r--r-- 1 mcc users 9.6K Feb 4 22:36 LTLFireability.xml
-rw-r--r-- 1 mcc users 3.6K Feb 3 08:56 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 18K Feb 3 08:56 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 2.9K Jan 31 03:09 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 18K Jan 31 03:09 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 6 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
-rw-r--r-- 1 mcc users 13K 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 booleans
BOOL_VECTOR

here is the order used to build the result vector(from text file)
FORMULA_NAME HouseConstruction-PT-08000-LTLCardinality-00
FORMULA_NAME HouseConstruction-PT-08000-LTLCardinality-01
FORMULA_NAME HouseConstruction-PT-08000-LTLCardinality-02
FORMULA_NAME HouseConstruction-PT-08000-LTLCardinality-03
FORMULA_NAME HouseConstruction-PT-08000-LTLCardinality-04
FORMULA_NAME HouseConstruction-PT-08000-LTLCardinality-05
FORMULA_NAME HouseConstruction-PT-08000-LTLCardinality-06
FORMULA_NAME HouseConstruction-PT-08000-LTLCardinality-07
FORMULA_NAME HouseConstruction-PT-08000-LTLCardinality-08
FORMULA_NAME HouseConstruction-PT-08000-LTLCardinality-09
FORMULA_NAME HouseConstruction-PT-08000-LTLCardinality-10
FORMULA_NAME HouseConstruction-PT-08000-LTLCardinality-11
FORMULA_NAME HouseConstruction-PT-08000-LTLCardinality-12
FORMULA_NAME HouseConstruction-PT-08000-LTLCardinality-13
FORMULA_NAME HouseConstruction-PT-08000-LTLCardinality-14
FORMULA_NAME HouseConstruction-PT-08000-LTLCardinality-15

=== Now, execution of the tool begins

BK_START 1552801126192

Working with output stream class java.io.PrintStream
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_1.0.0.201903111103/bin/its-ltl-linux64, --gc-threshold, 2000000, -i, /home/mcc/execution/LTLCardinality.pnml.gal, -t, CGAL, -LTL, /home/mcc/execution/LTLCardinality.ltl, -c, -stutter-deadlock], workingDir=/home/mcc/execution]

its-ltl command run as :

/home/mcc/BenchKit/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.201903111103/bin/its-ltl-linux64 --gc-threshold 2000000 -i /home/mcc/execution/LTLCardinality.pnml.gal -t CGAL -LTL /home/mcc/execution/LTLCardinality.ltl -c -stutter-deadlock
Read 16 LTL properties
Checking formula 0 : !((("(p8<=p11)")U(G(G("(p17>=2)")))))
Formula 0 simplified : !("(p8<=p11)" U G"(p17>=2)")
Presburger conditions satisfied. Using coverability to approximate state space in K-Induction.
// Phase 1: matrix 18 rows 26 cols
Running compilation step : CommandLine [args=[gcc, -c, -I/home/mcc/BenchKit//lts_install_dir//include, -I., -std=c99, -fPIC, -O2, model.c], workingDir=/home/mcc/execution]
Compilation finished in 536 ms.
Running link step : CommandLine [args=[gcc, -shared, -o, gal.so, model.o], workingDir=/home/mcc/execution]
Link finished in 66 ms.
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=8, -p, --pins-guards, --when, --ltl, ((LTLAP0==true))U([]([]((LTLAP1==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 4140 ms.
FORMULA HouseConstruction-PT-08000-LTLCardinality-00 FALSE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=8, -p, --pins-guards, --when, --ltl, (LTLAP2==true), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 2743 ms.
FORMULA HouseConstruction-PT-08000-LTLCardinality-01 FALSE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=8, -p, --pins-guards, --when, --ltl, <>((LTLAP3==true)), --buchi-type=spotba], workingDir=/home/mcc/execution]
LTSmin run took 669 ms.
FORMULA HouseConstruction-PT-08000-LTLCardinality-02 TRUE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
Running LTSmin : CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=8, --when, --ltl, X([](<>((LTLAP4==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
WARNING : LTS min runner thread failed on error :java.lang.RuntimeException: Unexpected exception when executing ltsmin :CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=8, --when, --ltl, X([](<>((LTLAP4==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
255
sparsehash FATAL ERROR: failed to allocate 37 groups

BK_STOP 1552802734536

--------------------
content from stderr:

+ export BINDIR=/home/mcc/BenchKit/
+ BINDIR=/home/mcc/BenchKit/
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ LTLCardinality = StateSpace ]]
+ /home/mcc/BenchKit//runeclipse.sh /home/mcc/execution LTLCardinality -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 LTLCardinality -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 5:38:48 AM fr.lip6.move.gal.application.Application start
INFO: Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, LTLCardinality, -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 5:38:48 AM fr.lip6.move.gal.application.MccTranslator transformPNML
INFO: Parsing pnml file : /home/mcc/execution/model.pnml
Mar 17, 2019 5:38:48 AM fr.lip6.move.gal.nupn.PTNetReader loadFromXML
INFO: Load time of PNML (sax parser for PT used): 41 ms
Mar 17, 2019 5:38:48 AM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 26 places.
Mar 17, 2019 5:38:48 AM fr.lip6.move.gal.pnml.togal.PTGALTransformer handlePage
INFO: Transformed 18 transitions.
Mar 17, 2019 5:38:48 AM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/model.pnml.img.gal : 6 ms
Mar 17, 2019 5:38:48 AM fr.lip6.move.gal.instantiate.GALRewriter flatten
INFO: Flatten gal took : 31 ms
Mar 17, 2019 5:38:48 AM fr.lip6.move.serialization.SerializationUtil systemToFile
INFO: Time to serialize gal into /home/mcc/execution/LTLCardinality.pnml.gal : 1 ms
Mar 17, 2019 5:38:48 AM fr.lip6.move.serialization.SerializationUtil serializePropertiesForITSLTLTools
INFO: Time to serialize properties into /home/mcc/execution/LTLCardinality.ltl : 6 ms
Mar 17, 2019 5:38:48 AM fr.lip6.move.gal.semantics.DeterministicNextBuilder getDeterministicNext
INFO: Input system was already deterministic with 18 transitions.
Mar 17, 2019 5:38:48 AM fr.lip6.move.gal.gal2smt.bmc.KInductionSolver computeAndDeclareInvariants
INFO: Computed 0 place invariants in 4 ms
Mar 17, 2019 5:38:48 AM fr.lip6.move.gal.gal2smt.bmc.KInductionSolver init
INFO: Proved 26 variables to be positive in 64 ms
Mar 17, 2019 5:38:48 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeAblingMatrix
INFO: Computing symmetric may disable matrix : 18 transitions.
Mar 17, 2019 5:38:48 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of disable matrix completed :0/18 took 0 ms. Total solver calls (SAT/UNSAT): 0(0/0)
Mar 17, 2019 5:38:48 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Complete disable matrix. took 1 ms. Total solver calls (SAT/UNSAT): 0(0/0)
Mar 17, 2019 5:38:48 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeAblingMatrix
INFO: Computing symmetric may enable matrix : 18 transitions.
Mar 17, 2019 5:38:48 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Complete enable matrix. took 0 ms. Total solver calls (SAT/UNSAT): 0(0/0)
Mar 17, 2019 5:38:49 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeCoEnablingMatrix
INFO: Computing symmetric co enabling matrix : 18 transitions.
Mar 17, 2019 5:38:49 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Finished co-enabling matrix. took 150 ms. Total solver calls (SAT/UNSAT): 0(0/0)
Mar 17, 2019 5:38:49 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver computeDoNotAccord
INFO: Computing Do-Not-Accords matrix : 18 transitions.
Mar 17, 2019 5:38:50 AM fr.lip6.move.gal.gal2smt.bmc.NecessaryEnablingsolver printStats
INFO: Computation of Completed DNA matrix. took 127 ms. Total solver calls (SAT/UNSAT): 24(0/24)
Mar 17, 2019 5:38:50 AM fr.lip6.move.gal.gal2pins.Gal2PinsTransformerNext transform
INFO: Built C files in 1426ms conformant to PINS in folder :/home/mcc/execution
pins2lts-mc, 0.000: Registering PINS so language module
pins2lts-mc( 0/ 8), 0.004: Loading model from ./gal.so
pins2lts-mc( 1/ 8), 0.004: library has no initializer
pins2lts-mc( 1/ 8), 0.004: loading model GAL
pins2lts-mc( 6/ 8), 0.004: library has no initializer
pins2lts-mc( 0/ 8), 0.004: library has no initializer
pins2lts-mc( 2/ 8), 0.004: library has no initializer
pins2lts-mc( 2/ 8), 0.004: loading model GAL
pins2lts-mc( 0/ 8), 0.004: loading model GAL
pins2lts-mc( 6/ 8), 0.004: loading model GAL
pins2lts-mc( 2/ 8), 0.005: completed loading model GAL
pins2lts-mc( 2/ 8), 0.005: LTL layer: formula: X([](<>((LTLAP4==true))))
pins2lts-mc( 4/ 8), 0.004: library has no initializer
pins2lts-mc( 4/ 8), 0.004: loading model GAL
pins2lts-mc( 6/ 8), 0.004: completed loading model GAL
pins2lts-mc( 5/ 8), 0.000: library has no initializer
pins2lts-mc( 0/ 8), 0.005: completed loading model GAL
pins2lts-mc( 4/ 8), 0.004: completed loading model GAL
pins2lts-mc( 5/ 8), 0.001: loading model GAL
pins2lts-mc( 2/ 8), 0.005: "X([](<>((LTLAP4==true))))" is not a file, parsing as formula...
pins2lts-mc( 3/ 8), 0.004: library has no initializer
pins2lts-mc( 3/ 8), 0.005: loading model GAL
pins2lts-mc( 1/ 8), 0.004: completed loading model GAL
pins2lts-mc( 7/ 8), 0.004: library has no initializer
pins2lts-mc( 2/ 8), 0.005: Using Spin LTL semantics
pins2lts-mc( 3/ 8), 0.005: completed loading model GAL
pins2lts-mc( 7/ 8), 0.004: loading model GAL
pins2lts-mc( 5/ 8), 0.001: completed loading model GAL
pins2lts-mc( 7/ 8), 0.004: completed loading model GAL
pins2lts-mc( 0/ 8), 0.015: Weak Buchi automaton detected, adding non-accepting as progress label.
pins2lts-mc( 0/ 8), 0.081: DFS-FIFO for weak LTL, using special progress label 44
pins2lts-mc( 0/ 8), 0.081: There are 45 state labels and 1 edge labels
pins2lts-mc( 0/ 8), 0.081: State length is 27, there are 21 groups
pins2lts-mc( 0/ 8), 0.081: Running dfsfifo using 8 cores
pins2lts-mc( 0/ 8), 0.081: Using a tree table with 2^27 elements
pins2lts-mc( 0/ 8), 0.081: Successor permutation: rr
pins2lts-mc( 0/ 8), 0.081: Global bits: 2, count bits: 0, local bits: 0
pins2lts-mc( 4/ 8), 0.129: ~102 levels ~960 states ~5960 transitions
pins2lts-mc( 2/ 8), 0.225: ~209 levels ~1920 states ~16136 transitions
pins2lts-mc( 4/ 8), 0.394: ~422 levels ~3840 states ~34008 transitions
pins2lts-mc( 2/ 8), 0.649: ~910 levels ~7680 states ~91776 transitions
pins2lts-mc( 2/ 8), 1.011: ~1862 levels ~15360 states ~207896 transitions
pins2lts-mc( 1/ 8), 1.495: ~3722 levels ~30720 states ~440240 transitions
pins2lts-mc( 6/ 8), 2.035: ~7524 levels ~61440 states ~935968 transitions
pins2lts-mc( 2/ 8), 2.483: ~15197 levels ~122880 states ~2001480 transitions
pins2lts-mc( 2/ 8), 3.143: ~30505 levels ~245760 states ~4113256 transitions
pins2lts-mc( 2/ 8), 4.803: ~61047 levels ~491520 states ~8357768 transitions
pins2lts-mc( 2/ 8), 8.487: ~122451 levels ~983040 states ~16981592 transitions
pins2lts-mc( 2/ 8), 10.558: ~143394 levels ~1966080 states ~21229176 transitions
pins2lts-mc( 7/ 8), 12.678: ~142724 levels ~3932160 states ~24875112 transitions
pins2lts-mc( 7/ 8), 16.562: ~142724 levels ~7864320 states ~33252968 transitions
pins2lts-mc( 7/ 8), 26.874: ~142724 levels ~15728640 states ~50310688 transitions
pins2lts-mc( 7/ 8), 44.695: ~142724 levels ~31457280 states ~85443936 transitions
pins2lts-mc( 7/ 8), 74.356: Error: tree leafs table full! Change -s/--ratio.
pins2lts-mc( 0/ 8), 74.388:
pins2lts-mc( 0/ 8), 74.388: mean standard work distribution: 58.3% (states) 58.5% (transitions)
pins2lts-mc( 0/ 8), 74.388:
pins2lts-mc( 0/ 8), 74.388: Explored 32115797 states 81237991 transitions, fanout: 2.530
pins2lts-mc( 0/ 8), 74.388: Total exploration time 74.290 sec (74.260 sec minimum, 74.272 sec on average)
pins2lts-mc( 0/ 8), 74.388: States per second: 432303, Transitions per second: 1093525
pins2lts-mc( 0/ 8), 74.388:
pins2lts-mc( 0/ 8), 74.388: Progress states detected: 102
pins2lts-mc( 0/ 8), 74.388: Redundant explorations: -30.2301
pins2lts-mc( 0/ 8), 74.388:
pins2lts-mc( 0/ 8), 74.388: Queue width: 8B, total height: 857797, memory: 6.54MB
pins2lts-mc( 0/ 8), 74.388: Tree memory: 607.2MB, 13.8 B/state, compr.: 12.6%
pins2lts-mc( 0/ 8), 74.388: Tree fill ratio (roots/leafs): 34.0%/99.0%
pins2lts-mc( 0/ 8), 74.388: Stored 20 string chucks using 0MB
pins2lts-mc( 0/ 8), 74.388: Total memory used for chunk indexing: 0MB
pins2lts-mc( 0/ 8), 74.388: Est. total memory use: 613.7MB (~1030.5MB paged-in)
java.lang.RuntimeException: Unexpected exception when executing ltsmin :CommandLine [args=[/home/mcc/BenchKit//lts_install_dir//bin/pins2lts-mc, ./gal.so, --threads=8, --when, --ltl, X([](<>((LTLAP4==true)))), --buchi-type=spotba], workingDir=/home/mcc/execution]
255
at fr.lip6.move.gal.application.LTSminRunner.checkProperty(LTSminRunner.java:167)
at fr.lip6.move.gal.application.LTSminRunner.access$9(LTSminRunner.java:122)
at fr.lip6.move.gal.application.LTSminRunner$1.run(LTSminRunner.java:91)
at java.lang.Thread.run(Thread.java:748)
ITS-tools command line returned an error code 1

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-08000"
export BK_EXAMINATION="LTLCardinality"
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 HouseConstruction-PT-08000, examination is LTLCardinality"
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-155246554900717"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/HouseConstruction-PT-08000.tgz
mv HouseConstruction-PT-08000 execution
cd execution
if [ "LTLCardinality" = "GlobalProperties" ] ; then
rm -f GenericPropertiesVerdict.xml
fi
if [ "LTLCardinality" = "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 [ "LTLCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "LTLCardinality" != "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 "LTLCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property LTLCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "LTLCardinality.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 '' LTLCardinality.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 ;