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.r180-tall-165277028100562.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 QuasiCertifProtocol-COL-02, examination is QuasiLiveness
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r180-tall-165277028100562
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 268K
-rw-r--r-- 1 mcc users 7.0K Apr 30 13:17 CTLCardinality.txt
-rw-r--r-- 1 mcc users 71K Apr 30 13:17 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.3K Apr 30 13:16 CTLFireability.txt
-rw-r--r-- 1 mcc users 58K Apr 30 13:16 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 10 09:34 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 3.9K May 9 08:30 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K May 9 08:30 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.5K May 9 08:30 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K May 9 08:30 LTLFireability.xml
-rw-r--r-- 1 mcc users 1.8K May 9 08:30 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K May 9 08:30 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 May 10 09:34 equiv_pt
-rw-r--r-- 1 mcc users 3 May 10 09:34 instance
-rw-r--r-- 1 mcc users 5 May 10 09:34 iscolored
-rw-r--r-- 1 mcc users 34K 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 booleans
BOOL_VECTOR

FORMULA_NAME QuasiLiveness

=== Now, execution of the tool begins

BK_START 1652835816038

Running Version 0
[2022-05-18 01:03:37] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, QuasiLiveness, -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, 1800]
[2022-05-18 01:03:37] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2022-05-18 01:03:37] [INFO ] Detected file is not PT type :http://www.pnml.org/version-2009/grammar/symmetricnet
log4j:WARN No appenders could be found for logger (org.apache.axiom.locator.DefaultOMMetaFactoryLocator).
log4j:WARN Please initialize the log4j system properly.
[2022-05-18 01:03:38] [WARNING] Using fallBack plugin, rng conformance not checked
[2022-05-18 01:03:38] [INFO ] Load time of PNML (colored model parsed with PNMLFW) : 540 ms
[2022-05-18 01:03:38] [INFO ] Imported 30 HL places and 26 HL transitions for a total of 86 PT places and 56.0 transition bindings in 17 ms.
[2022-05-18 01:03:38] [INFO ] Unfolded HLPN to a Petri net with 86 places and 56 transitions in 5 ms.
[2022-05-18 01:03:38] [INFO ] Unfolded HLPN properties in 0 ms.
[2022-05-18 01:03:38] [INFO ] Unfolded HLPN to a Petri net with 86 places and 56 transitions in 2 ms.
[2022-05-18 01:03:38] [INFO ] Unfolded HLPN properties in 1 ms.
Successfully produced net in file /tmp/petri1000_15258775669761493565.dot
[2022-05-18 01:03:38] [INFO ] Initial state test concluded for 2 properties.
Incomplete random walk after 10000 steps, including 1645 resets, run finished after 58 ms. (steps per millisecond=172 ) properties (out of 24) seen :8
Incomplete Best-First random walk after 1001 steps, including 25 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 16) seen :4
Incomplete Best-First random walk after 1001 steps, including 27 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 12) seen :0
Incomplete Best-First random walk after 1000 steps, including 24 resets, run finished after 3 ms. (steps per millisecond=333 ) properties (out of 12) seen :0
Incomplete Best-First random walk after 1001 steps, including 27 resets, run finished after 3 ms. (steps per millisecond=333 ) properties (out of 12) seen :0
Incomplete Best-First random walk after 1000 steps, including 56 resets, run finished after 2 ms. (steps per millisecond=500 ) properties (out of 12) seen :0
Incomplete Best-First random walk after 1001 steps, including 54 resets, run finished after 3 ms. (steps per millisecond=333 ) properties (out of 12) seen :0
Incomplete Best-First random walk after 1001 steps, including 57 resets, run finished after 3 ms. (steps per millisecond=333 ) properties (out of 12) seen :0
Incomplete Best-First random walk after 1001 steps, including 57 resets, run finished after 3 ms. (steps per millisecond=333 ) properties (out of 12) seen :0
Incomplete Best-First random walk after 1001 steps, including 58 resets, run finished after 2 ms. (steps per millisecond=500 ) properties (out of 12) seen :0
Incomplete Best-First random walk after 1000 steps, including 53 resets, run finished after 2 ms. (steps per millisecond=500 ) properties (out of 12) seen :0
Incomplete Best-First random walk after 1001 steps, including 58 resets, run finished after 3 ms. (steps per millisecond=333 ) properties (out of 12) seen :0
Incomplete Best-First random walk after 1001 steps, including 58 resets, run finished after 2 ms. (steps per millisecond=500 ) properties (out of 12) seen :0
Running SMT prover for 12 properties.
// Phase 1: matrix 56 rows 86 cols
[2022-05-18 01:03:38] [INFO ] Computed 31 place invariants in 8 ms
[2022-05-18 01:03:38] [INFO ] [Real]Absence check using 7 positive place invariants in 7 ms returned sat
[2022-05-18 01:03:38] [INFO ] [Real]Absence check using 7 positive and 24 generalized place invariants in 8 ms returned sat
[2022-05-18 01:03:38] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2022-05-18 01:03:38] [INFO ] [Real]Absence check using state equation in 50 ms returned sat
[2022-05-18 01:03:38] [INFO ] Computed and/alt/rep : 52/91/52 causal constraints (skipped 0 transitions) in 6 ms.
[2022-05-18 01:03:38] [INFO ] Added : 22 causal constraints over 5 iterations in 52 ms. Result :sat
Attempting to minimize the solution found.
Minimization took 4 ms.
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using 7 positive place invariants in 2 ms returned sat
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using 7 positive and 24 generalized place invariants in 3 ms returned sat
[2022-05-18 01:03:39] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using state equation in 23 ms returned sat
[2022-05-18 01:03:39] [INFO ] Computed and/alt/rep : 52/91/52 causal constraints (skipped 0 transitions) in 4 ms.
[2022-05-18 01:03:39] [INFO ] Added : 23 causal constraints over 5 iterations in 39 ms. Result :sat
Attempting to minimize the solution found.
Minimization took 1 ms.
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using 7 positive place invariants in 3 ms returned sat
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using 7 positive and 24 generalized place invariants in 3 ms returned sat
[2022-05-18 01:03:39] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using state equation in 25 ms returned sat
[2022-05-18 01:03:39] [INFO ] Computed and/alt/rep : 52/91/52 causal constraints (skipped 0 transitions) in 4 ms.
[2022-05-18 01:03:39] [INFO ] Added : 18 causal constraints over 4 iterations in 36 ms. Result :sat
Attempting to minimize the solution found.
Minimization took 1 ms.
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using 7 positive place invariants in 2 ms returned sat
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using 7 positive and 24 generalized place invariants in 4 ms returned sat
[2022-05-18 01:03:39] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using state equation in 20 ms returned sat
[2022-05-18 01:03:39] [INFO ] Computed and/alt/rep : 52/91/52 causal constraints (skipped 0 transitions) in 5 ms.
[2022-05-18 01:03:39] [INFO ] Added : 14 causal constraints over 3 iterations in 28 ms. Result :sat
Attempting to minimize the solution found.
Minimization took 2 ms.
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using 7 positive place invariants in 2 ms returned sat
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using 7 positive and 24 generalized place invariants in 2 ms returned sat
[2022-05-18 01:03:39] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using state equation in 19 ms returned sat
[2022-05-18 01:03:39] [INFO ] Computed and/alt/rep : 52/91/52 causal constraints (skipped 0 transitions) in 5 ms.
[2022-05-18 01:03:39] [INFO ] Added : 18 causal constraints over 4 iterations in 35 ms. Result :sat
Attempting to minimize the solution found.
Minimization took 1 ms.
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using 7 positive place invariants in 2 ms returned sat
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using 7 positive and 24 generalized place invariants in 3 ms returned sat
[2022-05-18 01:03:39] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2022-05-18 01:03:39] [INFO ] Computed and/alt/rep : 52/91/52 causal constraints (skipped 0 transitions) in 3 ms.
[2022-05-18 01:03:39] [INFO ] Added : 26 causal constraints over 6 iterations in 40 ms. Result :sat
Attempting to minimize the solution found.
Minimization took 1 ms.
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using 7 positive place invariants in 3 ms returned sat
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using 7 positive and 24 generalized place invariants in 8 ms returned sat
[2022-05-18 01:03:39] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using state equation in 20 ms returned sat
[2022-05-18 01:03:39] [INFO ] Computed and/alt/rep : 52/91/52 causal constraints (skipped 0 transitions) in 2 ms.
[2022-05-18 01:03:39] [INFO ] Added : 17 causal constraints over 4 iterations in 32 ms. Result :sat
Attempting to minimize the solution found.
Minimization took 1 ms.
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using 7 positive place invariants in 2 ms returned sat
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using 7 positive and 24 generalized place invariants in 7 ms returned sat
[2022-05-18 01:03:39] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using state equation in 21 ms returned sat
[2022-05-18 01:03:39] [INFO ] Solution in real domain found non-integer solution.
[2022-05-18 01:03:39] [INFO ] [Nat]Absence check using 7 positive place invariants in 2 ms returned sat
[2022-05-18 01:03:39] [INFO ] [Nat]Absence check using 7 positive and 24 generalized place invariants in 3 ms returned sat
[2022-05-18 01:03:39] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2022-05-18 01:03:39] [INFO ] [Nat]Absence check using state equation in 26 ms returned sat
[2022-05-18 01:03:39] [INFO ] Computed and/alt/rep : 52/91/52 causal constraints (skipped 0 transitions) in 6 ms.
[2022-05-18 01:03:39] [INFO ] Added : 13 causal constraints over 3 iterations in 33 ms. Result :sat
Attempting to minimize the solution found.
Minimization took 1 ms.
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using 7 positive place invariants in 2 ms returned sat
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using 7 positive and 24 generalized place invariants in 3 ms returned sat
[2022-05-18 01:03:39] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using state equation in 24 ms returned sat
[2022-05-18 01:03:39] [INFO ] Solution in real domain found non-integer solution.
[2022-05-18 01:03:39] [INFO ] [Nat]Absence check using 7 positive place invariants in 3 ms returned sat
[2022-05-18 01:03:39] [INFO ] [Nat]Absence check using 7 positive and 24 generalized place invariants in 4 ms returned sat
[2022-05-18 01:03:39] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2022-05-18 01:03:39] [INFO ] [Nat]Absence check using state equation in 50 ms returned sat
[2022-05-18 01:03:39] [INFO ] Computed and/alt/rep : 52/91/52 causal constraints (skipped 0 transitions) in 4 ms.
[2022-05-18 01:03:39] [INFO ] Added : 16 causal constraints over 4 iterations in 32 ms. Result :sat
Attempting to minimize the solution found.
Minimization took 1 ms.
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using 7 positive place invariants in 2 ms returned sat
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using 7 positive and 24 generalized place invariants in 3 ms returned sat
[2022-05-18 01:03:39] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2022-05-18 01:03:39] [INFO ] [Real]Absence check using state equation in 20 ms returned sat
[2022-05-18 01:03:39] [INFO ] Computed and/alt/rep : 52/91/52 causal constraints (skipped 0 transitions) in 3 ms.
[2022-05-18 01:03:40] [INFO ] Added : 20 causal constraints over 4 iterations in 33 ms. Result :sat
Attempting to minimize the solution found.
Minimization took 1 ms.
[2022-05-18 01:03:40] [INFO ] [Real]Absence check using 7 positive place invariants in 2 ms returned sat
[2022-05-18 01:03:40] [INFO ] [Real]Absence check using 7 positive and 24 generalized place invariants in 3 ms returned sat
[2022-05-18 01:03:40] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2022-05-18 01:03:40] [INFO ] [Real]Absence check using state equation in 19 ms returned sat
[2022-05-18 01:03:40] [INFO ] Solution in real domain found non-integer solution.
[2022-05-18 01:03:40] [INFO ] [Nat]Absence check using 7 positive place invariants in 7 ms returned sat
[2022-05-18 01:03:40] [INFO ] [Nat]Absence check using 7 positive and 24 generalized place invariants in 4 ms returned sat
[2022-05-18 01:03:40] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2022-05-18 01:03:40] [INFO ] [Nat]Absence check using state equation in 38 ms returned sat
[2022-05-18 01:03:40] [INFO ] Computed and/alt/rep : 52/91/52 causal constraints (skipped 0 transitions) in 3 ms.
[2022-05-18 01:03:40] [INFO ] Added : 23 causal constraints over 5 iterations in 41 ms. Result :sat
Attempting to minimize the solution found.
Minimization took 2 ms.
[2022-05-18 01:03:40] [INFO ] [Real]Absence check using 7 positive place invariants in 2 ms returned sat
[2022-05-18 01:03:40] [INFO ] [Real]Absence check using 7 positive and 24 generalized place invariants in 5 ms returned sat
[2022-05-18 01:03:40] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2022-05-18 01:03:40] [INFO ] [Real]Absence check using state equation in 19 ms returned sat
[2022-05-18 01:03:40] [INFO ] Computed and/alt/rep : 52/91/52 causal constraints (skipped 0 transitions) in 3 ms.
[2022-05-18 01:03:40] [INFO ] Added : 18 causal constraints over 4 iterations in 43 ms. Result :sat
Attempting to minimize the solution found.
Minimization took 3 ms.
Fused 12 Parikh solutions to 11 different solutions.
Incomplete Parikh walk after 2300 steps, including 114 resets, run finished after 14 ms. (steps per millisecond=164 ) properties (out of 12) seen :11 could not realise parikh vector
Incomplete Parikh walk after 2400 steps, including 106 resets, run finished after 5 ms. (steps per millisecond=480 ) properties (out of 1) seen :0 could not realise parikh vector
Incomplete Parikh walk after 1900 steps, including 107 resets, run finished after 4 ms. (steps per millisecond=475 ) properties (out of 1) seen :0 could not realise parikh vector
Incomplete Parikh walk after 1500 steps, including 97 resets, run finished after 3 ms. (steps per millisecond=500 ) properties (out of 1) seen :0 could not realise parikh vector
Incomplete Parikh walk after 1900 steps, including 104 resets, run finished after 4 ms. (steps per millisecond=475 ) properties (out of 1) seen :0 could not realise parikh vector
Finished Parikh walk after 28 steps, including 1 resets, run visited all 1 properties in 1 ms. (steps per millisecond=28 )
Able to resolve query QuasiLiveness after proving 26 properties.
FORMULA QuasiLiveness TRUE TECHNIQUES RANDOM_WALK PARIKH_WALK BESTFIRST_WALK TOPOLOGICAL INITIAL_STATE

BK_STOP 1652835821247

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

+ export BINDIR=/home/mcc/BenchKit/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ QuasiLiveness = StateSpace ]]
+ /home/mcc/BenchKit/bin//..//runeclipse.sh /home/mcc/execution QuasiLiveness -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800
+ 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 QuasiLiveness -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 1800 -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="QuasiCertifProtocol-COL-02"
export BK_EXAMINATION="QuasiLiveness"
export BK_TOOL="gold2021"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="1800"
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 QuasiCertifProtocol-COL-02, examination is QuasiLiveness"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r180-tall-165277028100562"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/QuasiCertifProtocol-COL-02.tgz
mv QuasiCertifProtocol-COL-02 execution
cd execution
if [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "UpperBounds" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] || [ "QuasiLiveness" = "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 [ "QuasiLiveness" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "QuasiLiveness" != "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 "QuasiLiveness.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property QuasiLiveness.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "QuasiLiveness.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 '' QuasiLiveness.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] ; then
echo "FORMULA_NAME QuasiLiveness"
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 ;