fond
Model Checking Contest 2023
13th edition, Paris, France, April 26, 2023 (at TOOLympics II)
Execution of r437-tajo-167905985100182
Last Updated
May 14, 2023

About the Execution of LoLa+red for ShieldRVt-PT-030A

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
317.380 62885.00 121826.00 83.40 T normal

Execution Chart

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

Trace from the execution

Formatting '/mnt/tpsp/fkordon/mcc2023-input.r437-tajo-167905985100182.qcow2', fmt=qcow2 size=4294967296 backing_file='/mnt/tpsp/fkordon/mcc2023-input.qcow2' encryption=off cluster_size=65536 lazy_refcounts=off
Waiting for the VM to be ready (probing ssh)
....................................................................................................................................................................................................................
=====================================================================
Generated by BenchKit 2-5348
Executing tool lolaxred
Input is ShieldRVt-PT-030A, examination is QuasiLiveness
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r437-tajo-167905985100182
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 496K
-rw-r--r-- 1 mcc users 6.0K Feb 26 00:09 CTLCardinality.txt
-rw-r--r-- 1 mcc users 63K Feb 26 00:09 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.7K Feb 25 23:44 CTLFireability.txt
-rw-r--r-- 1 mcc users 54K Feb 25 23:44 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:41 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 3.4K Feb 25 17:04 LTLCardinality.txt
-rw-r--r-- 1 mcc users 24K Feb 25 17:04 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.1K Feb 25 17:04 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K Feb 25 17:04 LTLFireability.xml
-rw-r--r-- 1 mcc users 9.1K Feb 26 00:42 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 91K Feb 26 00:42 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.3K Feb 26 00:25 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 84K Feb 26 00:25 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Feb 25 17:04 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K Feb 25 17:04 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 equiv_col
-rw-r--r-- 1 mcc users 5 Mar 5 18:23 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 iscolored
-rw-r--r-- 1 mcc users 82K 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

FORMULA_NAME QuasiLiveness

=== Now, execution of the tool begins

BK_START 1679517126998

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=lolaxred
BK_EXAMINATION=QuasiLiveness
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=ShieldRVt-PT-030A
Applying reductions before tool lola
Invoking reducer
Running Version 202303021504
[2023-03-22 20:32:08] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, QuasiLiveness, -timeout, 180, -rebuildPNML]
[2023-03-22 20:32:08] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-22 20:32:09] [INFO ] Load time of PNML (sax parser for PT used): 64 ms
[2023-03-22 20:32:09] [INFO ] Transformed 243 places.
[2023-03-22 20:32:09] [INFO ] Transformed 243 transitions.
[2023-03-22 20:32:09] [INFO ] Found NUPN structural information;
[2023-03-22 20:32:09] [INFO ] Parsed PT model containing 243 places and 243 transitions and 1026 arcs in 133 ms.
Starting structural reductions in LIVENESS mode, iteration 0 : 243/243 places, 243/243 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 243 transition count 242
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Deduced a syphon composed of 1 places in 2 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 1 with 2 rules applied. Total rules applied 3 place count 242 transition count 241
Applied a total of 3 rules in 21 ms. Remains 242 /243 variables (removed 1) and now considering 241/243 (removed 2) transitions.
// Phase 1: matrix 241 rows 242 cols
[2023-03-22 20:32:09] [INFO ] Computed 121 place invariants in 12 ms
[2023-03-22 20:32:09] [INFO ] Implicit Places using invariants in 329 ms returned [235]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 358 ms to find 1 implicit places.
Starting structural reductions in LIVENESS mode, iteration 1 : 241/243 places, 241/243 transitions.
Applied a total of 0 rules in 6 ms. Remains 241 /241 variables (removed 0) and now considering 241/241 (removed 0) transitions.
Finished structural reductions in LIVENESS mode , in 2 iterations and 385 ms. Remains : 241/243 places, 241/243 transitions.
Discarding 119 transitions out of 241. Remains 122
Initial state reduction rules removed 1 formulas.
Incomplete random walk after 10000 steps, including 2 resets, run finished after 516 ms. (steps per millisecond=19 ) properties (out of 121) seen :52
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 11 ms. (steps per millisecond=91 ) properties (out of 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 11 ms. (steps per millisecond=91 ) properties (out of 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 15 ms. (steps per millisecond=66 ) properties (out of 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 14 ms. (steps per millisecond=71 ) properties (out of 69) 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 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 69) 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 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 69) 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 69) 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 69) 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 69) 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 69) 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 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 69) 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 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 12 ms. (steps per millisecond=83 ) properties (out of 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 16 ms. (steps per millisecond=62 ) properties (out of 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 13 ms. (steps per millisecond=77 ) properties (out of 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 12 ms. (steps per millisecond=83 ) properties (out of 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 12 ms. (steps per millisecond=83 ) properties (out of 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 13 ms. (steps per millisecond=77 ) properties (out of 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 13 ms. (steps per millisecond=77 ) properties (out of 69) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 11 ms. (steps per millisecond=90 ) properties (out of 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 15 ms. (steps per millisecond=66 ) properties (out of 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 13 ms. (steps per millisecond=77 ) properties (out of 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 14 ms. (steps per millisecond=71 ) properties (out of 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 13 ms. (steps per millisecond=77 ) properties (out of 69) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 11 ms. (steps per millisecond=90 ) properties (out of 69) 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 69) 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 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 69) 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 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 69) 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 69) 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 69) seen :0
Incomplete Best-First random walk after 1000 steps, including 2 resets, run finished after 10 ms. (steps per millisecond=100 ) properties (out of 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 69) 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 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 69) 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 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 9 ms. (steps per millisecond=111 ) properties (out of 69) 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 69) 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 69) 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 69) seen :0
Incomplete Best-First random walk after 1001 steps, including 2 resets, run finished after 11 ms. (steps per millisecond=91 ) properties (out of 69) seen :0
Running SMT prover for 69 properties.
// Phase 1: matrix 241 rows 241 cols
[2023-03-22 20:32:10] [INFO ] Computed 120 place invariants in 2 ms
[2023-03-22 20:32:10] [INFO ] [Real]Absence check using 120 positive place invariants in 19 ms returned sat
[2023-03-22 20:32:12] [INFO ] After 1871ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:69
[2023-03-22 20:32:12] [INFO ] [Nat]Absence check using 120 positive place invariants in 20 ms returned sat
[2023-03-22 20:32:13] [INFO ] After 819ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :69
[2023-03-22 20:32:15] [INFO ] After 2230ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :69
Attempting to minimize the solution found.
Minimization took 1266 ms.
[2023-03-22 20:32:16] [INFO ] After 4097ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :69
Parikh walk visited 0 properties in 13624 ms.
Support contains 140 out of 241 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 241/241 places, 241/241 transitions.
Partial Free-agglomeration rule applied 13 times.
Drop transitions removed 13 transitions
Iterating global reduction 0 with 13 rules applied. Total rules applied 13 place count 241 transition count 241
Drop transitions removed 13 transitions
Redundant transition composition rules discarded 13 transitions
Iterating global reduction 0 with 13 rules applied. Total rules applied 26 place count 241 transition count 228
Applied a total of 26 rules in 59 ms. Remains 241 /241 variables (removed 0) and now considering 228/241 (removed 13) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 59 ms. Remains : 241/241 places, 228/241 transitions.
Interrupted random walk after 921927 steps, including 2 resets, run timeout after 30001 ms. (steps per millisecond=30 ) properties seen 54
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 500 ms. (steps per millisecond=200 ) properties (out of 15) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 492 ms. (steps per millisecond=203 ) properties (out of 15) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 474 ms. (steps per millisecond=210 ) properties (out of 15) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 450 ms. (steps per millisecond=222 ) properties (out of 15) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 492 ms. (steps per millisecond=203 ) properties (out of 15) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 482 ms. (steps per millisecond=207 ) properties (out of 15) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 490 ms. (steps per millisecond=204 ) properties (out of 15) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 491 ms. (steps per millisecond=203 ) properties (out of 15) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 639 ms. (steps per millisecond=156 ) properties (out of 15) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 543 ms. (steps per millisecond=184 ) properties (out of 15) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 507 ms. (steps per millisecond=197 ) properties (out of 15) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 497 ms. (steps per millisecond=201 ) properties (out of 15) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 492 ms. (steps per millisecond=203 ) properties (out of 15) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 526 ms. (steps per millisecond=190 ) properties (out of 15) seen :0
Incomplete Best-First random walk after 100001 steps, including 2 resets, run finished after 515 ms. (steps per millisecond=194 ) properties (out of 15) seen :0
Running SMT prover for 15 properties.
// Phase 1: matrix 228 rows 241 cols
[2023-03-22 20:33:07] [INFO ] Computed 120 place invariants in 6 ms
[2023-03-22 20:33:07] [INFO ] [Real]Absence check using 120 positive place invariants in 14 ms returned sat
[2023-03-22 20:33:08] [INFO ] After 439ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:15
[2023-03-22 20:33:08] [INFO ] [Nat]Absence check using 120 positive place invariants in 16 ms returned sat
[2023-03-22 20:33:08] [INFO ] After 250ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :15
[2023-03-22 20:33:08] [INFO ] After 481ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :15
Attempting to minimize the solution found.
Minimization took 149 ms.
[2023-03-22 20:33:09] [INFO ] After 818ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :15
Finished Parikh walk after 26995 steps, including 388 resets, run visited all 15 properties in 655 ms. (steps per millisecond=41 )
Parikh walk visited 15 properties in 656 ms.
Able to resolve query QuasiLiveness after proving 122 properties.
FORMULA QuasiLiveness TRUE TECHNIQUES RANDOM_WALK PARIKH_WALK TOPOLOGICAL INITIAL_STATE
Total runtime 60823 ms.
ITS solved all properties within timeout

BK_STOP 1679517189883

--------------------
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 QuasiLiveness -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="ShieldRVt-PT-030A"
export BK_EXAMINATION="QuasiLiveness"
export BK_TOOL="lolaxred"
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 lolaxred"
echo " Input is ShieldRVt-PT-030A, 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 r437-tajo-167905985100182"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/ShieldRVt-PT-030A.tgz
mv ShieldRVt-PT-030A 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 ;