Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2023-input.r453-smll-167912645200278.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2023-input.qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
=====================================================================
Generated by BenchKit 2-5348
Executing tool itstools
Input is SmartHome-PT-16, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r453-smll-167912645200278
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 528K
-rw-r--r-- 1 mcc users 7.4K Feb 26 05:41 CTLCardinality.txt
-rw-r--r-- 1 mcc users 85K Feb 26 05:41 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.5K Feb 26 05:40 CTLFireability.txt
-rw-r--r-- 1 mcc users 52K Feb 26 05:40 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:41 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.8K Jan 29 11:41 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.2K Feb 25 17:10 LTLCardinality.txt
-rw-r--r-- 1 mcc users 23K Feb 25 17:10 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.1K Feb 25 17:10 LTLFireability.txt
-rw-r--r-- 1 mcc users 15K Feb 25 17:10 LTLFireability.xml
-rw-r--r-- 1 mcc users 9.2K Feb 26 05:42 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 95K Feb 26 05:42 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 6.5K Feb 26 05:42 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 51K Feb 26 05:42 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Feb 25 17:10 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K Feb 25 17:10 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 equiv_col
-rw-r--r-- 1 mcc users 3 Mar 5 18:23 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 iscolored
-rw-r--r-- 1 mcc users 120K Mar 5 18:23 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 SmartHome-PT-16-ReachabilityCardinality-00
FORMULA_NAME SmartHome-PT-16-ReachabilityCardinality-01
FORMULA_NAME SmartHome-PT-16-ReachabilityCardinality-02
FORMULA_NAME SmartHome-PT-16-ReachabilityCardinality-03
FORMULA_NAME SmartHome-PT-16-ReachabilityCardinality-04
FORMULA_NAME SmartHome-PT-16-ReachabilityCardinality-05
FORMULA_NAME SmartHome-PT-16-ReachabilityCardinality-06
FORMULA_NAME SmartHome-PT-16-ReachabilityCardinality-07
FORMULA_NAME SmartHome-PT-16-ReachabilityCardinality-08
FORMULA_NAME SmartHome-PT-16-ReachabilityCardinality-09
FORMULA_NAME SmartHome-PT-16-ReachabilityCardinality-10
FORMULA_NAME SmartHome-PT-16-ReachabilityCardinality-11
FORMULA_NAME SmartHome-PT-16-ReachabilityCardinality-12
FORMULA_NAME SmartHome-PT-16-ReachabilityCardinality-13
FORMULA_NAME SmartHome-PT-16-ReachabilityCardinality-14
FORMULA_NAME SmartHome-PT-16-ReachabilityCardinality-15

=== Now, execution of the tool begins

BK_START 1679249036855

bash -c /home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n "BK_STOP " ; date -u +%s%3N
Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=ReachabilityCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=SmartHome-PT-16
Not applying reductions.
Model is PT
ReachabilityCardinality PT
Running Version 202303021504
[2023-03-19 18:04:00] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityCardinality, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2023-03-19 18:04:00] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-19 18:04:00] [INFO ] Load time of PNML (sax parser for PT used): 163 ms
[2023-03-19 18:04:00] [INFO ] Transformed 499 places.
[2023-03-19 18:04:00] [INFO ] Transformed 533 transitions.
[2023-03-19 18:04:00] [INFO ] Found NUPN structural information;
[2023-03-19 18:04:00] [INFO ] Parsed PT model containing 499 places and 533 transitions and 1222 arcs in 338 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityCardinality.xml in 34 ms.
Working with output stream class java.io.PrintStream
Deduced a syphon composed of 156 places in 12 ms
Reduce places removed 156 places and 129 transitions.
FORMULA SmartHome-PT-16-ReachabilityCardinality-02 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA SmartHome-PT-16-ReachabilityCardinality-03 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA SmartHome-PT-16-ReachabilityCardinality-04 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA SmartHome-PT-16-ReachabilityCardinality-05 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA SmartHome-PT-16-ReachabilityCardinality-09 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA SmartHome-PT-16-ReachabilityCardinality-10 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA SmartHome-PT-16-ReachabilityCardinality-12 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA SmartHome-PT-16-ReachabilityCardinality-13 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Incomplete random walk after 10000 steps, including 36 resets, run finished after 669 ms. (steps per millisecond=14 ) properties (out of 8) seen :5
FORMULA SmartHome-PT-16-ReachabilityCardinality-15 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SmartHome-PT-16-ReachabilityCardinality-14 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SmartHome-PT-16-ReachabilityCardinality-08 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SmartHome-PT-16-ReachabilityCardinality-07 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SmartHome-PT-16-ReachabilityCardinality-00 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 10001 steps, including 4 resets, run finished after 59 ms. (steps per millisecond=169 ) properties (out of 3) seen :0
[2023-03-19 18:04:01] [INFO ] Flatten gal took : 210 ms
[2023-03-19 18:04:01] [INFO ] Flatten gal took : 43 ms
Incomplete Best-First random walk after 10000 steps, including 2 resets, run finished after 80 ms. (steps per millisecond=125 ) properties (out of 3) seen :0
Incomplete Best-First random walk after 10001 steps, including 3 resets, run finished after 66 ms. (steps per millisecond=151 ) properties (out of 3) seen :0
[2023-03-19 18:04:01] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality12313665708460693495.gal : 59 ms
[2023-03-19 18:04:01] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality7821302206998592898.prop : 1 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202303021504/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality12313665708460693495.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality7821302206998592898.prop' '--nowitness' '--gen-order' 'FOLLOW'
Running SMT prover for 3 properties.
// Phase 1: matrix 404 rows 343 cols
[2023-03-19 18:04:01] [INFO ] Computed 16 place invariants in 15 ms

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202303021504/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
Loading property file /tmp/ReachabilityCardinality7821302206998592898.prop.
SDD proceeding with computation,3 properties remain. new max is 4
SDD size :1 after 3
SDD proceeding with computation,3 properties remain. new max is 8
SDD size :3 after 8
SDD proceeding with computation,3 properties remain. new max is 16
SDD size :8 after 19
SDD proceeding with computation,3 properties remain. new max is 32
SDD size :19 after 29
SDD proceeding with computation,3 properties remain. new max is 64
SDD size :29 after 209
SDD proceeding with computation,3 properties remain. new max is 128
SDD size :209 after 1271
SDD proceeding with computation,3 properties remain. new max is 256
SDD size :1271 after 206930
[2023-03-19 18:04:02] [INFO ] After 366ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:3
[2023-03-19 18:04:02] [INFO ] [Nat]Absence check using 16 positive place invariants in 10 ms returned sat
[2023-03-19 18:04:02] [INFO ] After 247ms SMT Verify possible using state equation in natural domain returned unsat :1 sat :2
[2023-03-19 18:04:02] [INFO ] Deduced a trap composed of 32 places in 111 ms of which 6 ms to minimize.
[2023-03-19 18:04:02] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 155 ms
[2023-03-19 18:04:02] [INFO ] After 467ms SMT Verify possible using trap constraints in natural domain returned unsat :1 sat :2
Attempting to minimize the solution found.
Minimization took 77 ms.
[2023-03-19 18:04:02] [INFO ] After 780ms SMT Verify possible using all constraints in natural domain returned unsat :1 sat :2
FORMULA SmartHome-PT-16-ReachabilityCardinality-11 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Fused 3 Parikh solutions to 2 different solutions.
FORMULA SmartHome-PT-16-ReachabilityCardinality-06 TRUE TECHNIQUES TOPOLOGICAL PARIKH_WALK
Parikh walk visited 1 properties in 15 ms.
Support contains 1 out of 343 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 343/343 places, 404/404 transitions.
Graph (trivial) has 352 edges and 343 vertex of which 154 / 343 are part of one of the 10 SCC in 5 ms
Free SCC test removed 144 places
Drop transitions removed 188 transitions
Reduce isomorphic transitions removed 188 transitions.
Graph (complete) has 313 edges and 199 vertex of which 182 are kept as prefixes of interest. Removing 17 places using SCC suffix rule.2 ms
Discarding 17 places :
Also discarding 5 output transitions
Drop transitions removed 5 transitions
Drop transitions removed 9 transitions
Reduce isomorphic transitions removed 9 transitions.
Drop transitions removed 84 transitions
Trivial Post-agglo rules discarded 84 transitions
Performed 84 trivial Post agglomeration. Transition count delta: 84
Iterating post reduction 0 with 93 rules applied. Total rules applied 95 place count 182 transition count 118
Reduce places removed 84 places and 0 transitions.
Ensure Unique test removed 9 transitions
Reduce isomorphic transitions removed 9 transitions.
Graph (complete) has 199 edges and 98 vertex of which 97 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.1 ms
Discarding 1 places :
Also discarding 0 output transitions
Drop transitions removed 7 transitions
Trivial Post-agglo rules discarded 7 transitions
Performed 7 trivial Post agglomeration. Transition count delta: 7
Iterating post reduction 1 with 101 rules applied. Total rules applied 196 place count 97 transition count 102
Reduce places removed 7 places and 0 transitions.
Drop transitions removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 2 with 8 rules applied. Total rules applied 204 place count 90 transition count 101
Performed 3 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 3 Pre rules applied. Total rules applied 204 place count 90 transition count 98
Deduced a syphon composed of 3 places in 1 ms
Reduce places removed 3 places and 0 transitions.
Iterating global reduction 3 with 6 rules applied. Total rules applied 210 place count 87 transition count 98
Discarding 38 places :
Symmetric choice reduction at 3 with 38 rule applications. Total rules 248 place count 49 transition count 60
Iterating global reduction 3 with 38 rules applied. Total rules applied 286 place count 49 transition count 60
Ensure Unique test removed 9 transitions
Reduce isomorphic transitions removed 9 transitions.
Iterating post reduction 3 with 9 rules applied. Total rules applied 295 place count 49 transition count 51
Performed 8 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 4 with 8 Pre rules applied. Total rules applied 295 place count 49 transition count 43
Deduced a syphon composed of 8 places in 0 ms
Reduce places removed 8 places and 0 transitions.
Iterating global reduction 4 with 16 rules applied. Total rules applied 311 place count 41 transition count 43
Graph (complete) has 69 edges and 41 vertex of which 22 are kept as prefixes of interest. Removing 19 places using SCC suffix rule.0 ms
Discarding 19 places :
Also discarding 16 output transitions
Drop transitions removed 16 transitions
Drop transitions removed 5 transitions
Trivial Post-agglo rules discarded 5 transitions
Performed 5 trivial Post agglomeration. Transition count delta: 5
Iterating post reduction 4 with 6 rules applied. Total rules applied 317 place count 22 transition count 22
Reduce places removed 5 places and 0 transitions.
Drop transitions removed 10 transitions
Reduce isomorphic transitions removed 10 transitions.
Iterating post reduction 5 with 15 rules applied. Total rules applied 332 place count 17 transition count 12
Performed 2 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 6 with 2 Pre rules applied. Total rules applied 332 place count 17 transition count 10
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 6 with 4 rules applied. Total rules applied 336 place count 15 transition count 10
Performed 4 Post agglomeration using F-continuation condition.Transition count delta: 4
Deduced a syphon composed of 4 places in 0 ms
Reduce places removed 4 places and 0 transitions.
Iterating global reduction 6 with 8 rules applied. Total rules applied 344 place count 11 transition count 6
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 6 with 1 rules applied. Total rules applied 345 place count 10 transition count 5
Reduce places removed 4 places and 0 transitions.
Drop transitions removed 3 transitions
Trivial Post-agglo rules discarded 3 transitions
Performed 3 trivial Post agglomeration. Transition count delta: 3
Iterating post reduction 6 with 7 rules applied. Total rules applied 352 place count 6 transition count 2
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 7 with 3 rules applied. Total rules applied 355 place count 3 transition count 2
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 8 with 1 Pre rules applied. Total rules applied 355 place count 3 transition count 1
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 8 with 2 rules applied. Total rules applied 357 place count 2 transition count 1
Applied a total of 357 rules in 47 ms. Remains 2 /343 variables (removed 341) and now considering 1/404 (removed 403) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 47 ms. Remains : 2/343 places, 1/404 transitions.
Finished random walk after 1 steps, including 0 resets, run visited all 1 properties in 1 ms. (steps per millisecond=1 )
FORMULA SmartHome-PT-16-ReachabilityCardinality-01 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
ITS runner failed with exception null
java.lang.InterruptedException
at java.base/java.lang.Object.wait(Native Method)
at java.base/java.lang.Thread.join(Thread.java:1304)
at java.base/java.lang.Thread.join(Thread.java:1372)
at fr.lip6.move.gal.application.runner.AbstractRunner.join(AbstractRunner.java:27)
at fr.lip6.move.gal.application.runner.its.ITSRunner.join(ITSRunner.java:177)
at fr.lip6.move.gal.application.solver.global.GlobalPropertySolver.verifyWithSDD(GlobalPropertySolver.java:675)
at fr.lip6.move.gal.application.solver.ReachabilitySolver.lambda$2(ReachabilitySolver.java:63)
at java.base/java.lang.Thread.run(Thread.java:833)
All properties solved without resorting to model-checking.
Total runtime 2742 ms.

BK_STOP 1679249044171

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

+ export BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ ReachabilityCardinality = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution ReachabilityCardinality -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
+ export PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ export LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
+ LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202303021504.jar
+ VERSION=202303021504
+ echo 'Running Version 202303021504'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination ReachabilityCardinality -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600

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="SmartHome-PT-16"
export BK_EXAMINATION="ReachabilityCardinality"
export BK_TOOL="itstools"
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 2-5348"
echo " Executing tool itstools"
echo " Input is SmartHome-PT-16, examination is ReachabilityCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r453-smll-167912645200278"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/SmartHome-PT-16.tgz
mv SmartHome-PT-16 execution
cd execution
if [ "ReachabilityCardinality" = "ReachabilityDeadlock" ] || [ "ReachabilityCardinality" = "UpperBounds" ] || [ "ReachabilityCardinality" = "QuasiLiveness" ] || [ "ReachabilityCardinality" = "StableMarking" ] || [ "ReachabilityCardinality" = "Liveness" ] || [ "ReachabilityCardinality" = "OneSafe" ] || [ "ReachabilityCardinality" = "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 [ "ReachabilityCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityCardinality" != "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 "ReachabilityCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityCardinality.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 '' ReachabilityCardinality.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "ReachabilityCardinality" = "ReachabilityDeadlock" ] || [ "ReachabilityCardinality" = "QuasiLiveness" ] || [ "ReachabilityCardinality" = "StableMarking" ] || [ "ReachabilityCardinality" = "Liveness" ] || [ "ReachabilityCardinality" = "OneSafe" ] ; then
echo "FORMULA_NAME ReachabilityCardinality"
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 ;