fond
Model Checking Contest 2022
12th edition, Bergen, Norway, June 21, 2022
Execution of r233-tall-165286037100100
Last Updated
Jun 22, 2022

About the Execution of 2021-gold for ShieldIIPt-PT-010B

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
343.651 12665.00 22004.00 495.50 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 normal

Execution Chart

We display below the execution chart for this examination (boot time has been removed).

Trace from the execution

Formatting '/data/fkordon/mcc2022-input.r233-tall-165286037100100.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2022-input.qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
.....................................................................................................................................................................................................................................................
=====================================================================
Generated by BenchKit 2-4028
Executing tool gold2021
Input is ShieldIIPt-PT-010B, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r233-tall-165286037100100
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 436K
-rw-r--r-- 1 mcc users 9.3K Apr 29 18:23 CTLCardinality.txt
-rw-r--r-- 1 mcc users 111K Apr 29 18:23 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.6K Apr 29 18:23 CTLFireability.txt
-rw-r--r-- 1 mcc users 51K Apr 29 18:23 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 10 09:34 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 3.6K May 9 08:50 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K May 9 08:50 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K May 9 08:50 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K May 9 08:50 LTLFireability.xml
-rw-r--r-- 1 mcc users 1.6K May 9 08:50 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K May 9 08:50 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 10 09:34 equiv_col
-rw-r--r-- 1 mcc users 5 May 10 09:34 instance
-rw-r--r-- 1 mcc users 6 May 10 09:34 iscolored
-rw-r--r-- 1 mcc users 167K May 10 09:34 model.pnml

--------------------
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 ShieldIIPt-PT-010B-UpperBounds-00
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-01
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-02
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-03
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-04
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-05
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-06
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-07
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-08
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-09
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-10
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-11
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-12
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-13
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-14
FORMULA_NAME ShieldIIPt-PT-010B-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1653032432129

Running Version 0
[2022-05-20 07:40:33] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, UpperBounds, -spotpath, /home/mcc/BenchKit/bin//..//ltlfilt, -z3path, /home/mcc/BenchKit/bin//..//z3/bin/z3, -yices2path, /home/mcc/BenchKit/bin//..//yices/bin/yices, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2022-05-20 07:40:33] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2022-05-20 07:40:33] [INFO ] Load time of PNML (sax parser for PT used): 89 ms
[2022-05-20 07:40:33] [INFO ] Transformed 703 places.
[2022-05-20 07:40:33] [INFO ] Transformed 653 transitions.
[2022-05-20 07:40:33] [INFO ] Found NUPN structural information;
[2022-05-20 07:40:33] [INFO ] Parsed PT model containing 703 places and 653 transitions in 139 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 6 ms.
// Phase 1: matrix 653 rows 703 cols
[2022-05-20 07:40:34] [INFO ] Computed 91 place invariants in 22 ms
Incomplete random walk after 10000 steps, including 2 resets, run finished after 54 ms. (steps per millisecond=185 ) properties (out of 16) seen :15
FORMULA ShieldIIPt-PT-010B-UpperBounds-15 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-13 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-12 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-11 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-10 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-09 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-08 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-07 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-06 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-05 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-04 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-03 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-02 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-01 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA ShieldIIPt-PT-010B-UpperBounds-00 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 17 ms. (steps per millisecond=588 ) properties (out of 1) seen :0
// Phase 1: matrix 653 rows 703 cols
[2022-05-20 07:40:34] [INFO ] Computed 91 place invariants in 9 ms
[2022-05-20 07:40:34] [INFO ] [Real]Absence check using 91 positive place invariants in 32 ms returned sat
[2022-05-20 07:40:34] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2022-05-20 07:40:34] [INFO ] [Real]Absence check using state equation in 206 ms returned sat
[2022-05-20 07:40:34] [INFO ] Solution in real domain found non-integer solution.
[2022-05-20 07:40:34] [INFO ] [Nat]Absence check using 91 positive place invariants in 26 ms returned sat
[2022-05-20 07:40:34] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2022-05-20 07:40:35] [INFO ] [Nat]Absence check using state equation in 188 ms returned sat
[2022-05-20 07:40:35] [INFO ] Deduced a trap composed of 24 places in 160 ms of which 4 ms to minimize.
[2022-05-20 07:40:35] [INFO ] Deduced a trap composed of 13 places in 144 ms of which 2 ms to minimize.
[2022-05-20 07:40:35] [INFO ] Deduced a trap composed of 26 places in 108 ms of which 1 ms to minimize.
[2022-05-20 07:40:35] [INFO ] Deduced a trap composed of 20 places in 101 ms of which 0 ms to minimize.
[2022-05-20 07:40:35] [INFO ] Deduced a trap composed of 19 places in 121 ms of which 1 ms to minimize.
[2022-05-20 07:40:35] [INFO ] Deduced a trap composed of 21 places in 109 ms of which 1 ms to minimize.
[2022-05-20 07:40:36] [INFO ] Deduced a trap composed of 38 places in 115 ms of which 1 ms to minimize.
[2022-05-20 07:40:36] [INFO ] Deduced a trap composed of 22 places in 119 ms of which 1 ms to minimize.
[2022-05-20 07:40:36] [INFO ] Deduced a trap composed of 21 places in 108 ms of which 0 ms to minimize.
[2022-05-20 07:40:36] [INFO ] Deduced a trap composed of 26 places in 109 ms of which 1 ms to minimize.
[2022-05-20 07:40:36] [INFO ] Deduced a trap composed of 23 places in 100 ms of which 1 ms to minimize.
[2022-05-20 07:40:36] [INFO ] Deduced a trap composed of 25 places in 85 ms of which 0 ms to minimize.
[2022-05-20 07:40:36] [INFO ] Deduced a trap composed of 31 places in 86 ms of which 1 ms to minimize.
[2022-05-20 07:40:37] [INFO ] Deduced a trap composed of 20 places in 84 ms of which 1 ms to minimize.
[2022-05-20 07:40:37] [INFO ] Deduced a trap composed of 21 places in 79 ms of which 0 ms to minimize.
[2022-05-20 07:40:37] [INFO ] Deduced a trap composed of 19 places in 84 ms of which 0 ms to minimize.
[2022-05-20 07:40:37] [INFO ] Deduced a trap composed of 26 places in 68 ms of which 1 ms to minimize.
[2022-05-20 07:40:37] [INFO ] Deduced a trap composed of 24 places in 63 ms of which 0 ms to minimize.
[2022-05-20 07:40:37] [INFO ] Deduced a trap composed of 25 places in 67 ms of which 1 ms to minimize.
[2022-05-20 07:40:37] [INFO ] Deduced a trap composed of 21 places in 59 ms of which 0 ms to minimize.
[2022-05-20 07:40:37] [INFO ] Deduced a trap composed of 25 places in 57 ms of which 1 ms to minimize.
[2022-05-20 07:40:37] [INFO ] Trap strengthening (SAT) tested/added 22/21 trap constraints in 2659 ms
[2022-05-20 07:40:37] [INFO ] Computed and/alt/rep : 652/983/652 causal constraints (skipped 0 transitions) in 38 ms.
[2022-05-20 07:40:39] [INFO ] Deduced a trap composed of 19 places in 179 ms of which 1 ms to minimize.
[2022-05-20 07:40:39] [WARNING] SMT solver failed with error :java.lang.RuntimeException: SMT solver raised an error when submitting script. Raised (error "Failed to assert expression: java.io.IOException: Stream close... while checking expression at index 0
java.lang.RuntimeException: SMT solver raised an error when submitting script. Raised (error "Failed to assert expression: java.io.IOException: Stream close...
at fr.lip6.move.gal.structural.smt.SMTUtils.execAndCheckResult(SMTUtils.java:240)
at fr.lip6.move.gal.structural.smt.DeadlockTester.refineWithTraps(DeadlockTester.java:906)
at fr.lip6.move.gal.structural.smt.DeadlockTester.refineWithCausalOrder(DeadlockTester.java:849)
at fr.lip6.move.gal.structural.smt.DeadlockTester.verifyPossible(DeadlockTester.java:595)
at fr.lip6.move.gal.structural.smt.DeadlockTester.findStructuralMaxWithSMT(DeadlockTester.java:2244)
at fr.lip6.move.gal.application.UpperBoundsSolver.applyReductions(UpperBoundsSolver.java:187)
at fr.lip6.move.gal.application.Application.startNoEx(Application.java:428)
at fr.lip6.move.gal.application.Application.start(Application.java:140)
at fr.lip6.move.gal.itscl.application.Application.start(Application.java:43)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590)
at org.eclipse.equinox.launcher.Main.run(Main.java:1461)
at org.eclipse.equinox.launcher.Main.main(Main.java:1434)
Current structural bounds on expressions (after SMT) : [1] Max seen :[0]
Support contains 1 out of 703 places. Attempting structural reductions.
Drop transitions removed 1 transitions
Starting structural reductions, iteration 0 : 703/703 places, 652/652 transitions.
Graph (complete) has 1121 edges and 703 vertex of which 702 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.22 ms
Discarding 1 places :
Also discarding 0 output transitions
Reduce places removed 1 places and 1 transitions.
Drop transitions removed 172 transitions
Trivial Post-agglo rules discarded 172 transitions
Performed 172 trivial Post agglomeration. Transition count delta: 172
Iterating post reduction 0 with 173 rules applied. Total rules applied 174 place count 701 transition count 479
Reduce places removed 172 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Drop transitions removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 1 with 174 rules applied. Total rules applied 348 place count 529 transition count 477
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 349 place count 528 transition count 477
Performed 41 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 41 Pre rules applied. Total rules applied 349 place count 528 transition count 436
Deduced a syphon composed of 41 places in 1 ms
Reduce places removed 41 places and 0 transitions.
Iterating global reduction 3 with 82 rules applied. Total rules applied 431 place count 487 transition count 436
Discarding 69 places :
Symmetric choice reduction at 3 with 69 rule applications. Total rules 500 place count 418 transition count 367
Iterating global reduction 3 with 69 rules applied. Total rules applied 569 place count 418 transition count 367
Performed 29 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 29 Pre rules applied. Total rules applied 569 place count 418 transition count 338
Deduced a syphon composed of 29 places in 1 ms
Reduce places removed 29 places and 0 transitions.
Iterating global reduction 3 with 58 rules applied. Total rules applied 627 place count 389 transition count 338
Performed 170 Post agglomeration using F-continuation condition.Transition count delta: 170
Deduced a syphon composed of 170 places in 0 ms
Reduce places removed 170 places and 0 transitions.
Iterating global reduction 3 with 340 rules applied. Total rules applied 967 place count 219 transition count 168
Performed 29 Post agglomeration using F-continuation condition.Transition count delta: -19
Deduced a syphon composed of 29 places in 0 ms
Reduce places removed 29 places and 0 transitions.
Iterating global reduction 3 with 58 rules applied. Total rules applied 1025 place count 190 transition count 187
Drop transitions removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 3 with 1 rules applied. Total rules applied 1026 place count 190 transition count 186
Partial Free-agglomeration rule applied 10 times.
Drop transitions removed 10 transitions
Iterating global reduction 4 with 10 rules applied. Total rules applied 1036 place count 190 transition count 186
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 4 with 1 rules applied. Total rules applied 1037 place count 189 transition count 185
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 4 with 2 rules applied. Total rules applied 1039 place count 187 transition count 185
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 5 with 1 Pre rules applied. Total rules applied 1039 place count 187 transition count 184
Deduced a syphon composed of 1 places in 1 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 5 with 2 rules applied. Total rules applied 1041 place count 186 transition count 184
Applied a total of 1041 rules in 195 ms. Remains 186 /703 variables (removed 517) and now considering 184/652 (removed 468) transitions.
Finished structural reductions, in 1 iterations. Remains : 186/703 places, 184/652 transitions.
// Phase 1: matrix 184 rows 186 cols
[2022-05-20 07:40:40] [INFO ] Computed 88 place invariants in 2 ms
Incomplete random walk after 1000000 steps, including 185 resets, run finished after 2727 ms. (steps per millisecond=366 ) properties (out of 1) seen :1
FORMULA ShieldIIPt-PT-010B-UpperBounds-14 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
All properties solved without resorting to model-checking.

BK_STOP 1653032444794

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

+ export BINDIR=/home/mcc/BenchKit/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ UpperBounds = StateSpace ]]
+ /home/mcc/BenchKit/bin//..//runeclipse.sh /home/mcc/execution UpperBounds -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ cut -d . -f 9
++ ls /home/mcc/BenchKit/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202104292328.jar
+ VERSION=0
+ echo 'Running Version 0'
+ /home/mcc/BenchKit/bin//..//itstools/its-tools -data /home/mcc/execution/workspace -pnfolder /home/mcc/execution -examination UpperBounds -spotpath /home/mcc/BenchKit/bin//..//ltlfilt -z3path /home/mcc/BenchKit/bin//..//z3/bin/z3 -yices2path /home/mcc/BenchKit/bin//..//yices/bin/yices -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600 -vmargs -Dosgi.locking=none -Declipse.stateSaveDelayInterval=-1 -Dosgi.configuration.area=/tmp/.eclipse -Xss128m -Xms40m -Xmx16000m

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="ShieldIIPt-PT-010B"
export BK_EXAMINATION="UpperBounds"
export BK_TOOL="gold2021"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"
export BK_BIN_PATH="/home/mcc/BenchKit/bin/"

# 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 2-4028"
echo " Executing tool gold2021"
echo " Input is ShieldIIPt-PT-010B, 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 r233-tall-165286037100100"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/ShieldIIPt-PT-010B.tgz
mv ShieldIIPt-PT-010B execution
cd execution
if [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "UpperBounds" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] || [ "UpperBounds" = "StateSpace" ]; 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 [ "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 '' UpperBounds.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] ; then
echo "FORMULA_NAME UpperBounds"
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 ;