fond
Model Checking Contest 2024
14th edition, Geneva, Switzerland, June 25, 2024
Execution of r158-smll-171636266600325
Last Updated
July 7, 2024

About the Execution of ITS-Tools for FMS-PT-00200

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
282.464 5409.00 10640.00 132.70 200 3 200 200 200 200 200 200 200 200 2 200 200 1 200 1 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.r158-smll-171636266600325.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 itstools
Input is FMS-PT-00200, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r158-smll-171636266600325
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 440K
-rw-r--r-- 1 mcc users 8.4K May 14 13:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 100K May 14 13:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.2K May 14 13:22 CTLFireability.txt
-rw-r--r-- 1 mcc users 60K 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 3.6K Apr 22 14:43 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K Apr 22 14:43 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.1K Apr 22 14:43 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Apr 22 14:43 LTLFireability.xml
-rw-r--r-- 1 mcc users 6.3K Apr 11 22:16 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 56K Apr 11 22:16 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 8.9K Apr 11 22:15 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 80K Apr 11 22:15 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.5K Apr 22 14:43 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K Apr 22 14:43 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 18 16:42 equiv_col
-rw-r--r-- 1 mcc users 6 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 positive values
NUM_VECTOR

here is the order used to build the result vector(from text file)
FORMULA_NAME FMS-PT-00200-UpperBounds-00
FORMULA_NAME FMS-PT-00200-UpperBounds-01
FORMULA_NAME FMS-PT-00200-UpperBounds-02
FORMULA_NAME FMS-PT-00200-UpperBounds-03
FORMULA_NAME FMS-PT-00200-UpperBounds-04
FORMULA_NAME FMS-PT-00200-UpperBounds-05
FORMULA_NAME FMS-PT-00200-UpperBounds-06
FORMULA_NAME FMS-PT-00200-UpperBounds-07
FORMULA_NAME FMS-PT-00200-UpperBounds-08
FORMULA_NAME FMS-PT-00200-UpperBounds-09
FORMULA_NAME FMS-PT-00200-UpperBounds-10
FORMULA_NAME FMS-PT-00200-UpperBounds-11
FORMULA_NAME FMS-PT-00200-UpperBounds-12
FORMULA_NAME FMS-PT-00200-UpperBounds-13
FORMULA_NAME FMS-PT-00200-UpperBounds-14
FORMULA_NAME FMS-PT-00200-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1716590012134

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=FMS-PT-00200
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
UpperBounds PT
Running Version 202405141337
[2024-05-24 22:33:34] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, UpperBounds, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2024-05-24 22:33:34] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2024-05-24 22:33:34] [INFO ] Load time of PNML (sax parser for PT used): 55 ms
[2024-05-24 22:33:34] [INFO ] Transformed 22 places.
[2024-05-24 22:33:34] [INFO ] Transformed 20 transitions.
[2024-05-24 22:33:34] [INFO ] Parsed PT model containing 22 places and 20 transitions and 50 arcs in 211 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 12 ms.
Current structural bounds on expressions (Initially) : Max Seen:[0, 0, 0, 0, 0, 200, 200, 200, 0, 0, 0, 0, 0, 1, 0, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0, 0, 0, 0, 0, 200, 200, 200, 0, 0, 0, 0, 0, 1, 0, 0] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
// Phase 1: matrix 20 rows 22 cols
[2024-05-24 22:33:34] [INFO ] Computed 6 invariants in 13 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0, 0, 0, 0, 200, 200, 200, 0, 0, 0, 0, 0, 1, 0, 0] Max Struct:[200, 3, 200, 200, 200, 200, 200, 200, 200, 200, 2, 200, 200, 1, 200, 1]
FORMULA FMS-PT-00200-UpperBounds-13 1 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FMS-PT-00200-UpperBounds-07 200 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FMS-PT-00200-UpperBounds-06 200 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FMS-PT-00200-UpperBounds-05 200 TECHNIQUES TOPOLOGICAL INITIAL_STATE
RANDOM walk for 10050 steps (2 resets) in 24 ms. (402 steps per ms)
FORMULA FMS-PT-00200-UpperBounds-15 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA FMS-PT-00200-UpperBounds-11 200 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA FMS-PT-00200-UpperBounds-10 2 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA FMS-PT-00200-UpperBounds-04 200 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA FMS-PT-00200-UpperBounds-01 3 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA FMS-PT-00200-UpperBounds-00 200 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 60006 steps (12 resets) in 81 ms. (731 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[6, 37, 32, 13, 9, 24] Max Struct:[200, 200, 200, 200, 200, 200]
[2024-05-24 22:33:34] [INFO ] Invariant cache hit.
[2024-05-24 22:33:34] [INFO ] [Real]Absence check using 6 positive place invariants in 8 ms returned sat
[2024-05-24 22:33:34] [INFO ] [Real]Absence check using state equation in 33 ms returned sat
[2024-05-24 22:33:34] [INFO ] Computed and/alt/rep : 17/18/17 causal constraints (skipped 0 transitions) in 7 ms.
[2024-05-24 22:33:34] [INFO ] Added : 6 causal constraints over 2 iterations in 55 ms. Result :sat
Minimization took 184 ms.
[2024-05-24 22:33:35] [INFO ] Solution in real domain found non-integer solution.
[2024-05-24 22:33:35] [INFO ] [Nat]Absence check using 6 positive place invariants in 4 ms returned sat
[2024-05-24 22:33:35] [INFO ] [Nat]Absence check using state equation in 28 ms returned sat
[2024-05-24 22:33:35] [INFO ] Computed and/alt/rep : 17/18/17 causal constraints (skipped 0 transitions) in 13 ms.
[2024-05-24 22:33:35] [INFO ] Added : 6 causal constraints over 2 iterations in 33 ms. Result :sat
Minimization took 11 ms.
[2024-05-24 22:33:35] [INFO ] [Real]Absence check using 6 positive place invariants in 4 ms returned sat
[2024-05-24 22:33:35] [INFO ] [Real]Absence check using state equation in 19 ms returned sat
[2024-05-24 22:33:35] [INFO ] Computed and/alt/rep : 17/18/17 causal constraints (skipped 0 transitions) in 5 ms.
[2024-05-24 22:33:35] [INFO ] Added : 7 causal constraints over 2 iterations in 22 ms. Result :sat
Minimization took 17 ms.
[2024-05-24 22:33:35] [INFO ] Solution in real domain found non-integer solution.
[2024-05-24 22:33:35] [INFO ] [Nat]Absence check using 6 positive place invariants in 4 ms returned sat
[2024-05-24 22:33:35] [INFO ] [Nat]Absence check using state equation in 12 ms returned sat
[2024-05-24 22:33:35] [INFO ] Computed and/alt/rep : 17/18/17 causal constraints (skipped 0 transitions) in 4 ms.
[2024-05-24 22:33:35] [INFO ] Added : 7 causal constraints over 2 iterations in 14 ms. Result :sat
Minimization took 6 ms.
[2024-05-24 22:33:35] [INFO ] [Real]Absence check using 6 positive place invariants in 3 ms returned sat
[2024-05-24 22:33:35] [INFO ] [Real]Absence check using state equation in 24 ms returned sat
[2024-05-24 22:33:35] [INFO ] Computed and/alt/rep : 17/18/17 causal constraints (skipped 0 transitions) in 7 ms.
[2024-05-24 22:33:35] [INFO ] Added : 4 causal constraints over 1 iterations in 23 ms. Result :sat
Minimization took 6 ms.
[2024-05-24 22:33:35] [INFO ] Solution in real domain found non-integer solution.
[2024-05-24 22:33:35] [INFO ] [Nat]Absence check using 6 positive place invariants in 2 ms returned sat
[2024-05-24 22:33:35] [INFO ] [Nat]Absence check using state equation in 20 ms returned sat
[2024-05-24 22:33:35] [INFO ] Computed and/alt/rep : 17/18/17 causal constraints (skipped 0 transitions) in 4 ms.
[2024-05-24 22:33:35] [INFO ] Added : 4 causal constraints over 1 iterations in 28 ms. Result :sat
Minimization took 9 ms.
[2024-05-24 22:33:35] [INFO ] [Real]Absence check using 6 positive place invariants in 4 ms returned sat
[2024-05-24 22:33:35] [INFO ] [Real]Absence check using state equation in 17 ms returned sat
[2024-05-24 22:33:35] [INFO ] Computed and/alt/rep : 17/18/17 causal constraints (skipped 0 transitions) in 7 ms.
[2024-05-24 22:33:35] [INFO ] Added : 8 causal constraints over 2 iterations in 26 ms. Result :sat
Minimization took 9 ms.
[2024-05-24 22:33:35] [INFO ] Solution in real domain found non-integer solution.
[2024-05-24 22:33:35] [INFO ] [Nat]Absence check using 6 positive place invariants in 3 ms returned sat
[2024-05-24 22:33:35] [INFO ] [Nat]Absence check using state equation in 21 ms returned sat
[2024-05-24 22:33:35] [INFO ] Computed and/alt/rep : 17/18/17 causal constraints (skipped 0 transitions) in 5 ms.
[2024-05-24 22:33:35] [INFO ] Added : 8 causal constraints over 2 iterations in 37 ms. Result :sat
Minimization took 8 ms.
[2024-05-24 22:33:35] [INFO ] [Real]Absence check using 6 positive place invariants in 4 ms returned sat
[2024-05-24 22:33:35] [INFO ] [Real]Absence check using state equation in 19 ms returned sat
[2024-05-24 22:33:35] [INFO ] Computed and/alt/rep : 17/18/17 causal constraints (skipped 0 transitions) in 3 ms.
[2024-05-24 22:33:35] [INFO ] Added : 11 causal constraints over 3 iterations in 19 ms. Result :sat
Minimization took 7 ms.
[2024-05-24 22:33:35] [INFO ] Solution in real domain found non-integer solution.
[2024-05-24 22:33:35] [INFO ] [Nat]Absence check using 6 positive place invariants in 3 ms returned sat
[2024-05-24 22:33:36] [INFO ] [Nat]Absence check using state equation in 11 ms returned sat
[2024-05-24 22:33:36] [INFO ] Computed and/alt/rep : 17/18/17 causal constraints (skipped 0 transitions) in 5 ms.
[2024-05-24 22:33:36] [INFO ] Added : 11 causal constraints over 3 iterations in 19 ms. Result :sat
Minimization took 6 ms.
[2024-05-24 22:33:36] [INFO ] [Real]Absence check using 6 positive place invariants in 4 ms returned sat
[2024-05-24 22:33:36] [INFO ] [Real]Absence check using state equation in 13 ms returned sat
[2024-05-24 22:33:36] [INFO ] Computed and/alt/rep : 17/18/17 causal constraints (skipped 0 transitions) in 3 ms.
[2024-05-24 22:33:36] [INFO ] Added : 5 causal constraints over 1 iterations in 10 ms. Result :sat
Minimization took 5 ms.
[2024-05-24 22:33:36] [INFO ] Solution in real domain found non-integer solution.
[2024-05-24 22:33:36] [INFO ] [Nat]Absence check using 6 positive place invariants in 4 ms returned sat
[2024-05-24 22:33:36] [INFO ] [Nat]Absence check using state equation in 14 ms returned sat
[2024-05-24 22:33:36] [INFO ] Computed and/alt/rep : 17/18/17 causal constraints (skipped 0 transitions) in 3 ms.
[2024-05-24 22:33:36] [INFO ] Added : 5 causal constraints over 1 iterations in 10 ms. Result :sat
Minimization took 6 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[6, 37, 32, 13, 9, 24] Max Struct:[200, 200, 200, 200, 200, 200]
FORMULA FMS-PT-00200-UpperBounds-14 200 TECHNIQUES TOPOLOGICAL PARIKH_WALK
FORMULA FMS-PT-00200-UpperBounds-08 200 TECHNIQUES TOPOLOGICAL PARIKH_WALK
FORMULA FMS-PT-00200-UpperBounds-12 200 TECHNIQUES TOPOLOGICAL PARIKH_WALK
FORMULA FMS-PT-00200-UpperBounds-09 200 TECHNIQUES TOPOLOGICAL PARIKH_WALK
FORMULA FMS-PT-00200-UpperBounds-02 200 TECHNIQUES TOPOLOGICAL PARIKH_WALK
FORMULA FMS-PT-00200-UpperBounds-03 200 TECHNIQUES TOPOLOGICAL PARIKH_WALK
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[] Max Struct:[]
RANDOM walk for 0 steps (0 resets) in 4 ms. (0 steps per ms) remains 0/0 properties
Finished probabilistic random walk after 0 steps, run visited all 0 properties in 0 ms. (steps per millisecond=0 )
[2024-05-24 22:33:37] [INFO ] Flatten gal took : 43 ms
[2024-05-24 22:33:37] [INFO ] Flatten gal took : 8 ms
[2024-05-24 22:33:37] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality5046039777797489007.gal : 6 ms
[2024-05-24 22:33:37] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality5425742663895463917.prop : 1 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202405141337/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality5046039777797489007.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality5425742663895463917.prop' '--nowitness' '--gen-order' 'FOLLOW'

ITS runner timed out or was interrupted.
its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202405141337/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...328
Loading property file /tmp/ReachabilityCardinality5425742663895463917.prop.
Found states matching all0 target predicate
Will report total states built up to this point. Computation was interrupted after 3 fixpoint passes
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst,5,0.016388,3472,2,28,5,88,6,0,111,35,0
Total reachable state count : 5

ITS tools runner thread asked to quit. Dying gracefully.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[] Max Struct:[]
All properties solved without resorting to model-checking.
Total runtime 3331 ms.

BK_STOP 1716590017543

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

+ export BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ UpperBounds = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution UpperBounds -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ 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//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202405141337.jar
+ VERSION=202405141337
+ echo 'Running Version 202405141337'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination UpperBounds -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600

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="FMS-PT-00200"
export BK_EXAMINATION="UpperBounds"
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 2-5568"
echo " Executing tool itstools"
echo " Input is FMS-PT-00200, examination is UpperBounds"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r158-smll-171636266600325"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/FMS-PT-00200.tgz
mv FMS-PT-00200 execution
cd execution
if [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "UpperBounds" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] || [ "UpperBounds" = "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 [ "UpperBounds" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "UpperBounds" != "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 "UpperBounds.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property UpperBounds.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "UpperBounds.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 '' UpperBounds.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] ; then
echo "FORMULA_NAME UpperBounds"
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 ;