fond
Model Checking Contest 2024
14th edition, Geneva, Switzerland, June 25, 2024
Execution of r480-tall-171624188600111
Last Updated
July 7, 2024

About the Execution of LTSMin+red for CloudOpsManagement-PT-20480by10240

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
512.079 36950.00 76159.00 226.40 FFTTTTTTTTTTTFFT normal

Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2024-input.r480-tall-171624188600111.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2024-input.qcow2 backing_fmt=qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
...................
=====================================================================
Generated by BenchKit 2-5568
Executing tool ltsminxred
Input is CloudOpsManagement-PT-20480by10240, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r480-tall-171624188600111
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 556K
-rw-r--r-- 1 mcc users 13K May 14 13:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 121K May 14 13:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 7.5K May 14 13:22 CTLFireability.txt
-rw-r--r-- 1 mcc users 63K May 14 13:22 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 18 16:42 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.5K May 18 16:42 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 4.2K Apr 22 14:34 LTLCardinality.txt
-rw-r--r-- 1 mcc users 24K Apr 22 14:34 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.6K May 19 07:14 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K May 19 18:05 LTLFireability.xml
-rw-r--r-- 1 mcc users 12K Apr 11 15:55 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 96K Apr 11 15:55 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 14K Apr 11 15:55 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 107K Apr 11 15:55 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 2.0K Apr 22 14:34 UpperBounds.txt
-rw-r--r-- 1 mcc users 4.0K Apr 22 14:34 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 18 16:42 equiv_col
-rw-r--r-- 1 mcc users 13 May 18 16:42 instance
-rw-r--r-- 1 mcc users 6 May 18 16:42 iscolored
-rw-r--r-- 1 mcc users 17K May 18 16:42 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 CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-00
FORMULA_NAME CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-01
FORMULA_NAME CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-02
FORMULA_NAME CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-03
FORMULA_NAME CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-04
FORMULA_NAME CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-05
FORMULA_NAME CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-06
FORMULA_NAME CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-07
FORMULA_NAME CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-08
FORMULA_NAME CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-09
FORMULA_NAME CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-10
FORMULA_NAME CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-11
FORMULA_NAME CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-12
FORMULA_NAME CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-13
FORMULA_NAME CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-14
FORMULA_NAME CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-15

=== Now, execution of the tool begins

BK_START 1717178591856

Invoking MCC driver with
BK_TOOL=ltsminxred
BK_EXAMINATION=ReachabilityFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=CloudOpsManagement-PT-20480by10240
BK_MEMORY_CONFINEMENT=16384
Applying reductions before tool ltsmin
Invoking reducer
Running Version 202405141337
[2024-05-31 18:03:13] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityFireability, -timeout, 360, -rebuildPNML]
[2024-05-31 18:03:13] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2024-05-31 18:03:13] [INFO ] Load time of PNML (sax parser for PT used): 42 ms
[2024-05-31 18:03:13] [INFO ] Transformed 27 places.
[2024-05-31 18:03:13] [INFO ] Transformed 29 transitions.
[2024-05-31 18:03:13] [INFO ] Parsed PT model containing 27 places and 29 transitions and 94 arcs in 158 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 25 ms.
Working with output stream class java.io.PrintStream
Initial state reduction rules removed 4 formulas.
FORMULA CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-00 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-09 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-10 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-14 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-15 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
RANDOM walk for 40964 steps (0 resets) in 92 ms. (440 steps per ms) remains 10/11 properties
FORMULA CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-12 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
BEST_FIRST walk for 40004 steps (8 resets) in 600 ms. (66 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 321 ms. (124 steps per ms) remains 10/10 properties
BEST_FIRST walk for 40004 steps (8 resets) in 834 ms. (47 steps per ms) remains 7/10 properties
FORMULA CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-11 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-07 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-03 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 40004 steps (8 resets) in 133 ms. (298 steps per ms) remains 7/7 properties
BEST_FIRST walk for 40002 steps (8 resets) in 230 ms. (173 steps per ms) remains 7/7 properties
BEST_FIRST walk for 40004 steps (8 resets) in 146 ms. (272 steps per ms) remains 7/7 properties
BEST_FIRST walk for 40004 steps (8 resets) in 352 ms. (113 steps per ms) remains 7/7 properties
BEST_FIRST walk for 40004 steps (8 resets) in 136 ms. (292 steps per ms) remains 7/7 properties
// Phase 1: matrix 29 rows 27 cols
[2024-05-31 18:03:14] [INFO ] Computed 11 invariants in 6 ms
[2024-05-31 18:03:14] [INFO ] State equation strengthened by 3 read => feed constraints.
Problem CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-06 is UNSAT
FORMULA CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-06 TRUE TECHNIQUES SMT_REFINEMENT
Problem CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-02 is UNSAT
FORMULA CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-02 TRUE TECHNIQUES SMT_REFINEMENT
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/27 variables, 11/11 constraints. Problems are: Problem set: 2 solved, 5 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/27 variables, 0/11 constraints. Problems are: Problem set: 2 solved, 5 unsolved
At refinement iteration 2 (OVERLAPS) 28/55 variables, 27/38 constraints. Problems are: Problem set: 2 solved, 5 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/55 variables, 2/40 constraints. Problems are: Problem set: 2 solved, 5 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 0/40 constraints. Problems are: Problem set: 2 solved, 5 unsolved
At refinement iteration 5 (OVERLAPS) 1/56 variables, 1/41 constraints. Problems are: Problem set: 2 solved, 5 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/56 variables, 0/41 constraints. Problems are: Problem set: 2 solved, 5 unsolved
At refinement iteration 7 (OVERLAPS) 0/56 variables, 0/41 constraints. Problems are: Problem set: 2 solved, 5 unsolved
No progress, stopping.
After SMT solving in domain Real declared 56/56 variables, and 41 constraints, problems are : Problem set: 2 solved, 5 unsolved in 336 ms.
Refiners :[Positive P Invariants (semi-flows): 11/11 constraints, State Equation: 27/27 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 7/7 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 2 solved, 5 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/27 variables, 11/11 constraints. Problems are: Problem set: 2 solved, 5 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/27 variables, 0/11 constraints. Problems are: Problem set: 2 solved, 5 unsolved
At refinement iteration 2 (OVERLAPS) 28/55 variables, 27/38 constraints. Problems are: Problem set: 2 solved, 5 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/55 variables, 2/40 constraints. Problems are: Problem set: 2 solved, 5 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/55 variables, 5/45 constraints. Problems are: Problem set: 2 solved, 5 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 0/45 constraints. Problems are: Problem set: 2 solved, 5 unsolved
At refinement iteration 6 (OVERLAPS) 1/56 variables, 1/46 constraints. Problems are: Problem set: 2 solved, 5 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/56 variables, 0/46 constraints. Problems are: Problem set: 2 solved, 5 unsolved
At refinement iteration 8 (OVERLAPS) 0/56 variables, 0/46 constraints. Problems are: Problem set: 2 solved, 5 unsolved
No progress, stopping.
After SMT solving in domain Int declared 56/56 variables, and 46 constraints, problems are : Problem set: 2 solved, 5 unsolved in 264 ms.
Refiners :[Positive P Invariants (semi-flows): 11/11 constraints, State Equation: 27/27 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 5/7 constraints, Known Traps: 0/0 constraints]
After SMT, in 675ms problems are : Problem set: 2 solved, 5 unsolved
FORMULA CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-08 TRUE TECHNIQUES PARIKH_WALK
FORMULA CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-04 TRUE TECHNIQUES PARIKH_WALK
FORMULA CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-01 FALSE TECHNIQUES PARIKH_WALK
Parikh walk visited 3 properties in 30003 ms.
Support contains 26 out of 27 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 27/27 places, 29/29 transitions.
Drop transitions (Empty/Sink Transition effects.) removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 27 transition count 28
Applied a total of 1 rules in 14 ms. Remains 27 /27 variables (removed 0) and now considering 28/29 (removed 1) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 25 ms. Remains : 27/27 places, 28/29 transitions.
RANDOM walk for 40964 steps (0 resets) in 75 ms. (539 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40003 steps (8 resets) in 176 ms. (226 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40004 steps (8 resets) in 107 ms. (370 steps per ms) remains 2/2 properties
Interrupted probabilistic random walk after 765764 steps, run timeout after 3001 ms. (steps per millisecond=255 ) properties seen :0 out of 2
Probabilistic random walk after 765764 steps, saw 599654 distinct states, run finished after 3006 ms. (steps per millisecond=254 ) properties seen :0
// Phase 1: matrix 28 rows 27 cols
[2024-05-31 18:03:48] [INFO ] Computed 11 invariants in 1 ms
[2024-05-31 18:03:48] [INFO ] State equation strengthened by 2 read => feed constraints.
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/26 variables, 7/7 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/26 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 2 (OVERLAPS) 1/27 variables, 4/11 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/27 variables, 0/11 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 4 (OVERLAPS) 28/55 variables, 27/38 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 2/40 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/55 variables, 0/40 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 7 (OVERLAPS) 0/55 variables, 0/40 constraints. Problems are: Problem set: 0 solved, 2 unsolved
No progress, stopping.
After SMT solving in domain Real declared 55/55 variables, and 40 constraints, problems are : Problem set: 0 solved, 2 unsolved in 83 ms.
Refiners :[Positive P Invariants (semi-flows): 11/11 constraints, State Equation: 27/27 constraints, ReadFeed: 2/2 constraints, PredecessorRefiner: 2/2 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 2 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/26 variables, 7/7 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/26 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 2 (OVERLAPS) 1/27 variables, 4/11 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/27 variables, 0/11 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 4 (OVERLAPS) 28/55 variables, 27/38 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/55 variables, 2/40 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/55 variables, 2/42 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/55 variables, 0/42 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 8 (OVERLAPS) 0/55 variables, 0/42 constraints. Problems are: Problem set: 0 solved, 2 unsolved
No progress, stopping.
After SMT solving in domain Int declared 55/55 variables, and 42 constraints, problems are : Problem set: 0 solved, 2 unsolved in 177 ms.
Refiners :[Positive P Invariants (semi-flows): 11/11 constraints, State Equation: 27/27 constraints, ReadFeed: 2/2 constraints, PredecessorRefiner: 2/2 constraints, Known Traps: 0/0 constraints]
After SMT, in 270ms problems are : Problem set: 0 solved, 2 unsolved
Finished Parikh walk after 82065 steps, including 2 resets, run visited all 2 properties in 294 ms. (steps per millisecond=279 )
FORMULA CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-13 FALSE TECHNIQUES PARIKH_WALK
FORMULA CloudOpsManagement-PT-20480by10240-ReachabilityFireability-2024-05 TRUE TECHNIQUES PARIKH_WALK
Finished Parikh walk after 0 steps, including 0 resets, run visited all 0 properties in 1 ms. (steps per millisecond=0 )
Parikh walk visited 2 properties in 298 ms.
All properties solved without resorting to model-checking.
Total runtime 35608 ms.
ITS solved all properties within timeout

BK_STOP 1717178628806

--------------------
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_1.0.0.202405141337.jar
+ VERSION=202405141337
+ echo 'Running Version 202405141337'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination ReachabilityFireability -timeout 360 -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="CloudOpsManagement-PT-20480by10240"
export BK_EXAMINATION="ReachabilityFireability"
export BK_TOOL="ltsminxred"
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 2-5568"
echo " Executing tool ltsminxred"
echo " Input is CloudOpsManagement-PT-20480by10240, examination is ReachabilityFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r480-tall-171624188600111"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/CloudOpsManagement-PT-20480by10240.tgz
mv CloudOpsManagement-PT-20480by10240 execution
cd execution
if [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "UpperBounds" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] || [ "ReachabilityFireability" = "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 [ "ReachabilityFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityFireability" != "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 "ReachabilityFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityFireability.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 '' ReachabilityFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME ReachabilityFireability"
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 ;