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.r132-tall-165271821000534.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 itstools
Input is LeafsetExtension-PT-S64C3, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r132-tall-165271821000534
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 14M
-rw-r--r-- 1 mcc users 11K Apr 29 12:40 CTLCardinality.txt
-rw-r--r-- 1 mcc users 68K Apr 29 12:40 CTLCardinality.xml
-rw-r--r-- 1 mcc users 9.2K Apr 29 12:39 CTLFireability.txt
-rw-r--r-- 1 mcc users 50K Apr 29 12:39 CTLFireability.xml
-rw-r--r-- 1 mcc users 5.6K May 9 08:12 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K May 9 08:12 LTLCardinality.xml
-rw-r--r-- 1 mcc users 4.1K May 9 08:12 LTLFireability.txt
-rw-r--r-- 1 mcc users 20K May 9 08:12 LTLFireability.xml
-rw-r--r-- 1 mcc users 22K Apr 29 12:41 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 138K Apr 29 12:41 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 14K Apr 29 12:41 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 62K Apr 29 12:41 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 2.3K May 9 08:12 UpperBounds.txt
-rw-r--r-- 1 mcc users 4.3K May 9 08:12 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 10 09:34 equiv_col
-rw-r--r-- 1 mcc users 6 May 10 09:34 instance
-rw-r--r-- 1 mcc users 6 May 10 09:34 iscolored
-rw-r--r-- 1 mcc users 14M 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

here is the order used to build the result vector(from text file)
FORMULA_NAME LeafsetExtension-PT-S64C3-ReachabilityCardinality-00
FORMULA_NAME LeafsetExtension-PT-S64C3-ReachabilityCardinality-01
FORMULA_NAME LeafsetExtension-PT-S64C3-ReachabilityCardinality-02
FORMULA_NAME LeafsetExtension-PT-S64C3-ReachabilityCardinality-03
FORMULA_NAME LeafsetExtension-PT-S64C3-ReachabilityCardinality-04
FORMULA_NAME LeafsetExtension-PT-S64C3-ReachabilityCardinality-05
FORMULA_NAME LeafsetExtension-PT-S64C3-ReachabilityCardinality-06
FORMULA_NAME LeafsetExtension-PT-S64C3-ReachabilityCardinality-07
FORMULA_NAME LeafsetExtension-PT-S64C3-ReachabilityCardinality-08
FORMULA_NAME LeafsetExtension-PT-S64C3-ReachabilityCardinality-09
FORMULA_NAME LeafsetExtension-PT-S64C3-ReachabilityCardinality-10
FORMULA_NAME LeafsetExtension-PT-S64C3-ReachabilityCardinality-11
FORMULA_NAME LeafsetExtension-PT-S64C3-ReachabilityCardinality-12
FORMULA_NAME LeafsetExtension-PT-S64C3-ReachabilityCardinality-13
FORMULA_NAME LeafsetExtension-PT-S64C3-ReachabilityCardinality-14
FORMULA_NAME LeafsetExtension-PT-S64C3-ReachabilityCardinality-15

=== Now, execution of the tool begins

BK_START 1654241543872

Running Version 202205111006
[2022-06-03 07:32:25] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityCardinality, -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]
[2022-06-03 07:32:25] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2022-06-03 07:32:25] [INFO ] Load time of PNML (sax parser for PT used): 727 ms
[2022-06-03 07:32:25] [INFO ] Transformed 21462 places.
[2022-06-03 07:32:26] [INFO ] Transformed 21129 transitions.
[2022-06-03 07:32:26] [INFO ] Parsed PT model containing 21462 places and 21129 transitions in 957 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityCardinality.xml in 55 ms.
Working with output stream class java.io.PrintStream
Incomplete random walk after 10000 steps, including 386 resets, run finished after 848 ms. (steps per millisecond=11 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 17 ms. (steps per millisecond=58 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 8 ms. (steps per millisecond=125 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 8 ms. (steps per millisecond=125 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 8 ms. (steps per millisecond=125 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 16) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 16) seen :1
FORMULA LeafsetExtension-PT-S64C3-ReachabilityCardinality-11 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 8 ms. (steps per millisecond=125 ) properties (out of 15) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 15) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 15) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 8 ms. (steps per millisecond=125 ) properties (out of 15) seen :0
Interrupted probabilistic random walk after 8953 steps, run timeout after 3001 ms. (steps per millisecond=2 ) properties seen :{}
Probabilistic random walk after 8953 steps, saw 5004 distinct states, run finished after 3002 ms. (steps per millisecond=2 ) properties seen :0
Running SMT prover for 15 properties.
// Phase 1: matrix 21129 rows 21462 cols
[2022-06-03 07:32:33] [INFO ] Computed 333 place invariants in 2698 ms
[2022-06-03 07:32:39] [INFO ] After 6773ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:15
[2022-06-03 07:32:46] [INFO ] [Nat]Absence check using 67 positive place invariants in 76 ms returned sat
[2022-06-03 07:32:47] [INFO ] [Nat]Absence check using 67 positive and 266 generalized place invariants in 985 ms returned sat
[2022-06-03 07:33:04] [INFO ] After 15379ms SMT Verify possible using state equation in natural domain returned unsat :12 sat :2
[2022-06-03 07:33:04] [INFO ] After 15411ms SMT Verify possible using trap constraints in natural domain returned unsat :12 sat :2
Attempting to minimize the solution found.
Minimization took 7 ms.
[2022-06-03 07:33:04] [INFO ] After 25070ms SMT Verify possible using all constraints in natural domain returned unsat :12 sat :2
FORMULA LeafsetExtension-PT-S64C3-ReachabilityCardinality-15 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA LeafsetExtension-PT-S64C3-ReachabilityCardinality-14 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA LeafsetExtension-PT-S64C3-ReachabilityCardinality-13 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA LeafsetExtension-PT-S64C3-ReachabilityCardinality-12 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA LeafsetExtension-PT-S64C3-ReachabilityCardinality-10 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA LeafsetExtension-PT-S64C3-ReachabilityCardinality-09 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA LeafsetExtension-PT-S64C3-ReachabilityCardinality-08 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA LeafsetExtension-PT-S64C3-ReachabilityCardinality-06 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA LeafsetExtension-PT-S64C3-ReachabilityCardinality-04 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA LeafsetExtension-PT-S64C3-ReachabilityCardinality-03 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA LeafsetExtension-PT-S64C3-ReachabilityCardinality-02 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA LeafsetExtension-PT-S64C3-ReachabilityCardinality-00 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Fused 15 Parikh solutions to 1 different solutions.
Parikh walk visited 0 properties in 0 ms.
Support contains 67 out of 21462 places. Attempting structural reductions.
Starting structural reductions in SAFETY mode, iteration 0 : 21462/21462 places, 21129/21129 transitions.
Graph (complete) has 42457 edges and 21462 vertex of which 2732 are kept as prefixes of interest. Removing 18730 places using SCC suffix rule.35 ms
Discarding 18730 places :
Also discarding 10232 output transitions
Drop transitions removed 10232 transitions
Drop transitions removed 4193 transitions
Reduce isomorphic transitions removed 4193 transitions.
Drop transitions removed 1137 transitions
Trivial Post-agglo rules discarded 1137 transitions
Performed 1137 trivial Post agglomeration. Transition count delta: 1137
Iterating post reduction 0 with 5330 rules applied. Total rules applied 5331 place count 2732 transition count 5567
Reduce places removed 1139 places and 0 transitions.
Drop transitions removed 36 transitions
Trivial Post-agglo rules discarded 36 transitions
Performed 36 trivial Post agglomeration. Transition count delta: 36
Iterating post reduction 1 with 1175 rules applied. Total rules applied 6506 place count 1593 transition count 5531
Reduce places removed 36 places and 0 transitions.
Performed 3 Post agglomeration using F-continuation condition.Transition count delta: 3
Iterating post reduction 2 with 39 rules applied. Total rules applied 6545 place count 1557 transition count 5528
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 3 with 3 rules applied. Total rules applied 6548 place count 1554 transition count 5528
Performed 49 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 4 with 49 Pre rules applied. Total rules applied 6548 place count 1554 transition count 5479
Deduced a syphon composed of 49 places in 2 ms
Reduce places removed 49 places and 0 transitions.
Iterating global reduction 4 with 98 rules applied. Total rules applied 6646 place count 1505 transition count 5479
Free-agglomeration rule (complex) applied 16 times.
Iterating global reduction 4 with 16 rules applied. Total rules applied 6662 place count 1505 transition count 5463
Reduce places removed 16 places and 0 transitions.
Iterating post reduction 4 with 16 rules applied. Total rules applied 6678 place count 1489 transition count 5463
Partial Free-agglomeration rule applied 927 times.
Drop transitions removed 927 transitions
Iterating global reduction 5 with 927 rules applied. Total rules applied 7605 place count 1489 transition count 5463
Discarding 27 places :
Implicit places reduction removed 27 places
Iterating post reduction 5 with 27 rules applied. Total rules applied 7632 place count 1462 transition count 5463
Free-agglomeration rule (complex) applied 19 times.
Iterating global reduction 6 with 19 rules applied. Total rules applied 7651 place count 1462 transition count 5444
Reduce places removed 19 places and 0 transitions.
Iterating post reduction 6 with 19 rules applied. Total rules applied 7670 place count 1443 transition count 5444
Applied a total of 7670 rules in 1312 ms. Remains 1443 /21462 variables (removed 20019) and now considering 5444/21129 (removed 15685) transitions.
Finished structural reductions, in 1 iterations. Remains : 1443/21462 places, 5444/21129 transitions.
Incomplete random walk after 1000000 steps, including 129991 resets, run finished after 12358 ms. (steps per millisecond=80 ) properties (out of 3) seen :2
FORMULA LeafsetExtension-PT-S64C3-ReachabilityCardinality-07 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA LeafsetExtension-PT-S64C3-ReachabilityCardinality-01 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 1000001 steps, including 2649 resets, run finished after 2359 ms. (steps per millisecond=423 ) properties (out of 1) seen :0
Running SMT prover for 1 properties.
[2022-06-03 07:33:20] [INFO ] Flow matrix only has 2522 transitions (discarded 2922 similar events)
// Phase 1: matrix 2522 rows 1443 cols
[2022-06-03 07:33:20] [INFO ] Computed 2 place invariants in 26 ms
[2022-06-03 07:33:21] [INFO ] After 206ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
[2022-06-03 07:33:21] [INFO ] [Nat]Absence check using 0 positive and 2 generalized place invariants in 1 ms returned sat
[2022-06-03 07:33:22] [INFO ] After 864ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2022-06-03 07:33:22] [INFO ] After 1177ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
Attempting to minimize the solution found.
Minimization took 154 ms.
[2022-06-03 07:33:22] [INFO ] After 1518ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
Parikh walk visited 0 properties in 9 ms.
Support contains 35 out of 1443 places. Attempting structural reductions.
Starting structural reductions in SAFETY mode, iteration 0 : 1443/1443 places, 5444/5444 transitions.
Graph (complete) has 4429 edges and 1443 vertex of which 826 are kept as prefixes of interest. Removing 617 places using SCC suffix rule.1 ms
Discarding 617 places :
Also discarding 18 output transitions
Drop transitions removed 18 transitions
Drop transitions removed 586 transitions
Reduce isomorphic transitions removed 586 transitions.
Iterating post reduction 0 with 586 rules applied. Total rules applied 587 place count 826 transition count 4840
Partial Free-agglomeration rule applied 93 times.
Drop transitions removed 93 transitions
Iterating global reduction 1 with 93 rules applied. Total rules applied 680 place count 826 transition count 4840
Discarding 3 places :
Implicit places reduction removed 3 places
Iterating post reduction 1 with 3 rules applied. Total rules applied 683 place count 823 transition count 4840
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 2 with 1 rules applied. Total rules applied 684 place count 823 transition count 4839
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 685 place count 822 transition count 4839
Applied a total of 685 rules in 366 ms. Remains 822 /1443 variables (removed 621) and now considering 4839/5444 (removed 605) transitions.
Finished structural reductions, in 1 iterations. Remains : 822/1443 places, 4839/5444 transitions.
Finished random walk after 25461 steps, including 3368 resets, run visited all 1 properties in 238 ms. (steps per millisecond=106 )
FORMULA LeafsetExtension-PT-S64C3-ReachabilityCardinality-05 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
All properties solved without resorting to model-checking.
Total runtime 58321 ms.

BK_STOP 1654241603430

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

+ export LANG=C
+ LANG=C
+ export BINDIR=/home/mcc/BenchKit/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ ReachabilityCardinality = StateSpace ]]
+ /home/mcc/BenchKit/bin//..//runeclipse.sh /home/mcc/execution ReachabilityCardinality -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ ulimit -s 65536
+ export PYTHONPATH=/usr/lib/python3.9/site-packages/
+ PYTHONPATH=/usr/lib/python3.9/site-packages/
+ export LD_LIBRARY_PATH=/usr/local/lib:
+ LD_LIBRARY_PATH=/usr/local/lib:
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202205111006.jar
+ VERSION=202205111006
+ echo 'Running Version 202205111006'
+ /home/mcc/BenchKit/bin//..//itstools/its-tools -data @none -pnfolder /home/mcc/execution -examination ReachabilityCardinality -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=@none -Xss128m -Xms40m -Xmx8192m

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="LeafsetExtension-PT-S64C3"
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 2-4028"
echo " Executing tool itstools"
echo " Input is LeafsetExtension-PT-S64C3, 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 r132-tall-165271821000534"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/LeafsetExtension-PT-S64C3.tgz
mv LeafsetExtension-PT-S64C3 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 ;