fond
Model Checking Contest 2023
13th edition, Paris, France, April 26, 2023 (at TOOLympics II)
Execution of r184-tall-167838871100283
Last Updated
May 14, 2023

About the Execution of Marcie+red for FlexibleBarrier-PT-04b

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
294.636 11488.00 14695.00 1144.30 F normal

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.r184-tall-167838871100283.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)
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=====================================================================
Generated by BenchKit 2-5348
Executing tool marciexred
Input is FlexibleBarrier-PT-04b, examination is StableMarking
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r184-tall-167838871100283
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 552K
-rw-r--r-- 1 mcc users 7.4K Feb 25 12:27 CTLCardinality.txt
-rw-r--r-- 1 mcc users 79K Feb 25 12:27 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.4K Feb 25 12:27 CTLFireability.txt
-rw-r--r-- 1 mcc users 48K Feb 25 12:27 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:40 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 3.7K Feb 25 16:06 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K Feb 25 16:06 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.2K Feb 25 16:06 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K Feb 25 16:06 LTLFireability.xml
-rw-r--r-- 1 mcc users 12K Feb 25 12:28 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 132K Feb 25 12:28 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 11K Feb 25 12:28 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 99K Feb 25 12:28 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Feb 25 16:06 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Feb 25 16:06 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 equiv_col
-rw-r--r-- 1 mcc users 4 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 69K Mar 5 18:22 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 StableMarking

=== Now, execution of the tool begins

BK_START 1678550947315

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=marciexred
BK_EXAMINATION=StableMarking
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=FlexibleBarrier-PT-04b
Applying reductions before tool marcie
Invoking reducer
Running Version 202303021504
[2023-03-11 16:09:08] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, StableMarking, -timeout, 180, -rebuildPNML]
[2023-03-11 16:09:08] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-11 16:09:08] [INFO ] Load time of PNML (sax parser for PT used): 54 ms
[2023-03-11 16:09:08] [INFO ] Transformed 268 places.
[2023-03-11 16:09:08] [INFO ] Transformed 305 transitions.
[2023-03-11 16:09:08] [INFO ] Found NUPN structural information;
[2023-03-11 16:09:08] [INFO ] Parsed PT model containing 268 places and 305 transitions and 743 arcs in 120 ms.
Graph (trivial) has 254 edges and 268 vertex of which 26 / 268 are part of one of the 4 SCC in 4 ms
Free SCC test removed 22 places
Structural test allowed to assert that 90 places are NOT stable. Took 10 ms.
Ensure Unique test removed 23 transitions
Reduce redundant transitions removed 23 transitions.
Incomplete random walk after 10000 steps, including 307 resets, run finished after 448 ms. (steps per millisecond=22 ) properties (out of 178) seen :105
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 3 ms. (steps per millisecond=333 ) properties (out of 73) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 73) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 73) seen :0
Incomplete Best-First random walk after 1001 steps, including 6 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 73) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 3 ms. (steps per millisecond=333 ) properties (out of 73) seen :0
Incomplete Best-First random walk after 1000 steps, including 6 resets, run finished after 3 ms. (steps per millisecond=333 ) properties (out of 73) seen :0
Incomplete Best-First random walk after 1000 steps, including 5 resets, run finished after 3 ms. (steps per millisecond=333 ) properties (out of 73) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 73) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 73) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 73) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 73) seen :0
Incomplete Best-First random walk after 1000 steps, including 6 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 73) seen :0
Incomplete Best-First random walk after 1001 steps, including 6 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 73) seen :0
Incomplete Best-First random walk after 1000 steps, including 5 resets, run finished after 7 ms. (steps per millisecond=142 ) properties (out of 73) seen :0
Incomplete Best-First random walk after 1001 steps, including 6 resets, run finished after 17 ms. (steps per millisecond=58 ) properties (out of 73) seen :0
Incomplete Best-First random walk after 1000 steps, including 4 resets, run finished after 7 ms. (steps per millisecond=142 ) properties (out of 73) seen :0
Incomplete Best-First random walk after 1001 steps, including 6 resets, run finished after 7 ms. (steps per millisecond=143 ) properties (out of 73) seen :6
Incomplete Best-First random walk after 1000 steps, including 5 resets, run finished after 8 ms. (steps per millisecond=125 ) properties (out of 67) seen :0
Incomplete Best-First random walk after 1000 steps, including 4 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 67) seen :4
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 63) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 63) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 63) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 63) seen :0
Incomplete Best-First random walk after 1001 steps, including 6 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 63) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 63) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 63) seen :0
Incomplete Best-First random walk after 1001 steps, including 6 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 63) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 63) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 63) seen :0
Incomplete Best-First random walk after 1000 steps, including 6 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 63) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 63) seen :6
Incomplete Best-First random walk after 1001 steps, including 4 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 57) seen :3
Incomplete Best-First random walk after 1001 steps, including 6 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 54) seen :0
Incomplete Best-First random walk after 1001 steps, including 6 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 54) seen :0
Incomplete Best-First random walk after 1001 steps, including 4 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 54) seen :2
Incomplete Best-First random walk after 1001 steps, including 4 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 52) seen :0
Incomplete Best-First random walk after 1000 steps, including 6 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 52) seen :0
Incomplete Best-First random walk after 1000 steps, including 5 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 52) seen :0
Incomplete Best-First random walk after 1001 steps, including 4 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 52) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 52) seen :0
Incomplete Best-First random walk after 1000 steps, including 5 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 52) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 52) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 52) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 52) seen :0
Incomplete Best-First random walk after 1000 steps, including 6 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 52) seen :0
Incomplete Best-First random walk after 1001 steps, including 6 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 52) seen :0
Incomplete Best-First random walk after 1000 steps, including 7 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 52) seen :0
Incomplete Best-First random walk after 1001 steps, including 7 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 52) seen :0
Incomplete Best-First random walk after 1001 steps, including 4 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 52) seen :3
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 49) seen :2
Incomplete Best-First random walk after 1001 steps, including 6 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 47) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 6 ms. (steps per millisecond=166 ) properties (out of 47) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 47) seen :0
Incomplete Best-First random walk after 1000 steps, including 5 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 47) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 47) seen :0
Incomplete Best-First random walk after 1000 steps, including 5 resets, run finished after 5 ms. (steps per millisecond=200 ) properties (out of 47) seen :0
Incomplete Best-First random walk after 1001 steps, including 6 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 47) seen :0
Incomplete Best-First random walk after 1001 steps, including 5 resets, run finished after 4 ms. (steps per millisecond=250 ) properties (out of 47) seen :0
Running SMT prover for 47 properties.
[2023-03-11 16:09:09] [INFO ] Flow matrix only has 279 transitions (discarded 3 similar events)
// Phase 1: matrix 279 rows 246 cols
[2023-03-11 16:09:09] [INFO ] Computed 6 place invariants in 16 ms
[2023-03-11 16:09:10] [INFO ] After 431ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:47
[2023-03-11 16:09:10] [INFO ] [Nat]Absence check using 6 positive place invariants in 6 ms returned sat
[2023-03-11 16:09:11] [INFO ] After 508ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :47
[2023-03-11 16:09:11] [INFO ] State equation strengthened by 1 read => feed constraints.
[2023-03-11 16:09:11] [INFO ] After 448ms SMT Verify possible using 1 Read/Feed constraints in natural domain returned unsat :0 sat :47
[2023-03-11 16:09:11] [INFO ] Deduced a trap composed of 90 places in 99 ms of which 5 ms to minimize.
[2023-03-11 16:09:11] [INFO ] Deduced a trap composed of 74 places in 75 ms of which 1 ms to minimize.
[2023-03-11 16:09:11] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 210 ms
[2023-03-11 16:09:12] [INFO ] Deduced a trap composed of 88 places in 85 ms of which 1 ms to minimize.
[2023-03-11 16:09:12] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 113 ms
[2023-03-11 16:09:12] [INFO ] Deduced a trap composed of 45 places in 68 ms of which 1 ms to minimize.
[2023-03-11 16:09:12] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 87 ms
[2023-03-11 16:09:12] [INFO ] After 1675ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :47
Attempting to minimize the solution found.
Minimization took 428 ms.
[2023-03-11 16:09:13] [INFO ] After 3051ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :47
Parikh walk visited 4 properties in 522 ms.
Support contains 43 out of 246 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 246/246 places, 282/282 transitions.
Drop transitions removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Drop transitions removed 66 transitions
Trivial Post-agglo rules discarded 66 transitions
Performed 66 trivial Post agglomeration. Transition count delta: 66
Iterating post reduction 0 with 70 rules applied. Total rules applied 70 place count 246 transition count 212
Reduce places removed 66 places and 0 transitions.
Iterating post reduction 1 with 66 rules applied. Total rules applied 136 place count 180 transition count 212
Performed 5 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 5 Pre rules applied. Total rules applied 136 place count 180 transition count 207
Deduced a syphon composed of 5 places in 2 ms
Reduce places removed 5 places and 0 transitions.
Iterating global reduction 2 with 10 rules applied. Total rules applied 146 place count 175 transition count 207
Discarding 52 places :
Symmetric choice reduction at 2 with 52 rule applications. Total rules 198 place count 123 transition count 155
Iterating global reduction 2 with 52 rules applied. Total rules applied 250 place count 123 transition count 155
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 1 Pre rules applied. Total rules applied 250 place count 123 transition count 154
Deduced a syphon composed of 1 places in 1 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 2 with 2 rules applied. Total rules applied 252 place count 122 transition count 154
Discarding 7 places :
Symmetric choice reduction at 2 with 7 rule applications. Total rules 259 place count 115 transition count 147
Iterating global reduction 2 with 7 rules applied. Total rules applied 266 place count 115 transition count 147
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 2 with 4 rules applied. Total rules applied 270 place count 115 transition count 143
Performed 21 Post agglomeration using F-continuation condition.Transition count delta: 21
Deduced a syphon composed of 21 places in 0 ms
Reduce places removed 21 places and 0 transitions.
Iterating global reduction 3 with 42 rules applied. Total rules applied 312 place count 94 transition count 122
Drop transitions removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 3 with 7 rules applied. Total rules applied 319 place count 94 transition count 115
Free-agglomeration rule applied 31 times.
Iterating global reduction 4 with 31 rules applied. Total rules applied 350 place count 94 transition count 84
Reduce places removed 31 places and 0 transitions.
Drop transitions removed 9 transitions
Reduce isomorphic transitions removed 9 transitions.
Iterating post reduction 4 with 40 rules applied. Total rules applied 390 place count 63 transition count 75
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 5 with 1 rules applied. Total rules applied 391 place count 62 transition count 74
Applied a total of 391 rules in 69 ms. Remains 62 /246 variables (removed 184) and now considering 74/282 (removed 208) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 70 ms. Remains : 62/246 places, 74/282 transitions.
Finished random walk after 952 steps, including 0 resets, run visited all 43 properties in 18 ms. (steps per millisecond=52 )
Able to resolve query StableMarking after proving 180 properties.
FORMULA StableMarking FALSE TECHNIQUES RANDOM_WALK PARIKH_WALK MARKED_SUFFIX_TEST TRIVIAL_UNMARKED_SCC_TEST BESTFIRST_WALK TOPOLOGICAL
Total runtime 5091 ms.
ITS solved all properties within timeout

BK_STOP 1678550958803

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

+ 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//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202303021504.jar
+ VERSION=202303021504
+ echo 'Running Version 202303021504'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination StableMarking -timeout 180 -rebuildPNML

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="FlexibleBarrier-PT-04b"
export BK_EXAMINATION="StableMarking"
export BK_TOOL="marciexred"
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 2-5348"
echo " Executing tool marciexred"
echo " Input is FlexibleBarrier-PT-04b, examination is StableMarking"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r184-tall-167838871100283"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/FlexibleBarrier-PT-04b.tgz
mv FlexibleBarrier-PT-04b execution
cd execution
if [ "StableMarking" = "ReachabilityDeadlock" ] || [ "StableMarking" = "UpperBounds" ] || [ "StableMarking" = "QuasiLiveness" ] || [ "StableMarking" = "StableMarking" ] || [ "StableMarking" = "Liveness" ] || [ "StableMarking" = "OneSafe" ] || [ "StableMarking" = "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 [ "StableMarking" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "StableMarking" != "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 "StableMarking.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property StableMarking.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "StableMarking.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 '' StableMarking.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "StableMarking" = "ReachabilityDeadlock" ] || [ "StableMarking" = "QuasiLiveness" ] || [ "StableMarking" = "StableMarking" ] || [ "StableMarking" = "Liveness" ] || [ "StableMarking" = "OneSafe" ] ; then
echo "FORMULA_NAME StableMarking"
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 ;