Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2026-input.r162-smll-177961107800335.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2026-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 2-5973
Executing tool itstools
Input is Kanban-PT-50000, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r162-smll-177961107800335
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 484K
-rw-r--r-- 1 mcc users 7.5K Mar 7 16:49 CTLCardinality.txt
-rw-r--r-- 1 mcc users 77K Mar 7 16:49 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.8K Mar 7 16:48 CTLFireability.txt
-rw-r--r-- 1 mcc users 50K Mar 7 16:48 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Mar 3 18:30 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.3K Mar 3 18:30 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.7K Mar 15 11:10 LTLCardinality.txt
-rw-r--r-- 1 mcc users 28K Mar 15 11:10 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K Mar 15 11:10 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Mar 15 11:10 LTLFireability.xml
-rw-r--r-- 1 mcc users 12K Mar 7 16:49 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 118K Mar 7 16:49 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.6K Mar 7 16:49 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 81K Mar 7 16:49 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Mar 15 11:10 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K Mar 15 11:10 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 14K Mar 3 18:30 model.pnml

--------------------
content from stdout:

=== Data for post analysis generated by BenchKit (invocation template)

The expected result is a vector of booleans
BOOL_VECTOR

echo here is the order used to build the result vector(from xml file)
FORMULA_NAME Kanban-PT-50000-ReachabilityFireability-2024-00
FORMULA_NAME Kanban-PT-50000-ReachabilityFireability-2024-01
FORMULA_NAME Kanban-PT-50000-ReachabilityFireability-2024-02
FORMULA_NAME Kanban-PT-50000-ReachabilityFireability-2024-03
FORMULA_NAME Kanban-PT-50000-ReachabilityFireability-2024-04
FORMULA_NAME Kanban-PT-50000-ReachabilityFireability-2024-05
FORMULA_NAME Kanban-PT-50000-ReachabilityFireability-2024-06
FORMULA_NAME Kanban-PT-50000-ReachabilityFireability-2024-07
FORMULA_NAME Kanban-PT-50000-ReachabilityFireability-2024-08
FORMULA_NAME Kanban-PT-50000-ReachabilityFireability-2024-09
FORMULA_NAME Kanban-PT-50000-ReachabilityFireability-2024-10
FORMULA_NAME Kanban-PT-50000-ReachabilityFireability-2024-11
FORMULA_NAME Kanban-PT-50000-ReachabilityFireability-2024-12
FORMULA_NAME Kanban-PT-50000-ReachabilityFireability-2024-13
FORMULA_NAME Kanban-PT-50000-ReachabilityFireability-2024-14
FORMULA_NAME Kanban-PT-50000-ReachabilityFireability-2024-15

=== Now, execution of the tool begins

BK_START 1779840089101

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=ReachabilityFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=Kanban-PT-50000
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
ReachabilityFireability PT
Running Version 202604301425
[2026-05-27 00:01:31] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityFireability, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2026-05-27 00:01:31] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-27 00:01:31] [INFO ] Load time of PNML (sax parser for PT used): 52 ms
[2026-05-27 00:01:31] [INFO ] Transformed 16 places.
[2026-05-27 00:01:31] [INFO ] Transformed 16 transitions.
[2026-05-27 00:01:31] [INFO ] Parsed PT model containing 16 places and 16 transitions and 40 arcs in 231 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 29 ms.
Working with output stream class java.io.PrintStream
Initial state reduction rules removed 3 formulas.
FORMULA Kanban-PT-50000-ReachabilityFireability-2024-04 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Kanban-PT-50000-ReachabilityFireability-2024-09 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Kanban-PT-50000-ReachabilityFireability-2024-11 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Kanban-PT-50000-ReachabilityFireability-2024-12 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Kanban-PT-50000-ReachabilityFireability-2024-13 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
RANDOM walk for 200004 steps (0 resets) in 882 ms. (226 steps per ms) remains 10/11 properties
FORMULA Kanban-PT-50000-ReachabilityFireability-2024-07 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
BEST_FIRST walk for 40003 steps (8 resets) in 1017 ms. (39 steps per ms) remains 7/10 properties
FORMULA Kanban-PT-50000-ReachabilityFireability-2024-08 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Kanban-PT-50000-ReachabilityFireability-2024-06 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Kanban-PT-50000-ReachabilityFireability-2024-05 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
[2026-05-27 00:01:32] [INFO ] Flatten gal took : 37 ms
[2026-05-27 00:01:32] [INFO ] Flatten gal took : 9 ms
[2026-05-27 00:01:32] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality17185847364548169251.gal : 34 ms
BEST_FIRST walk for 40003 steps (8 resets) in 688 ms. (58 steps per ms) remains 7/7 properties
[2026-05-27 00:01:32] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality9787671766833613861.prop : 10 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality17185847364548169251.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality9787671766833613861.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
Loading property file /tmp/ReachabilityCardinality9787671766833613861.prop.
An unexpected exception occurred : Overflow error when converting initial marking. Please recompile libDDD with larger DDD::val_t definition.
ITS-tools command line returned an error code 1
BEST_FIRST walk for 40004 steps (8 resets) in 430 ms. (92 steps per ms) remains 7/7 properties
[2026-05-27 00:01:32] [INFO ] Flatten gal took : 12 ms
[2026-05-27 00:01:32] [INFO ] Applying decomposition
[2026-05-27 00:01:32] [INFO ] Flatten gal took : 17 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202604301425/bin/convert-linux64' '-i' '/tmp/graph2447939174900809136.txt' '-o' '/tmp/graph2447939174900809136.bin' '-w' '/tmp/graph2447939174900809136.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202604301425/bin/louvain-linux64' '/tmp/graph2447939174900809136.bin' '-l' '-1' '-v' '-w' '/tmp/graph2447939174900809136.weights' '-q' '0' '-e' '0.001'
[2026-05-27 00:01:33] [INFO ] Decomposing Gal with order
[2026-05-27 00:01:33] [INFO ] Rewriting arrays to variables to allow decomposition.
BEST_FIRST walk for 40004 steps (8 resets) in 962 ms. (41 steps per ms) remains 7/7 properties
[2026-05-27 00:01:33] [INFO ] Flatten gal took : 157 ms
[2026-05-27 00:01:33] [INFO ] Fuse similar labels procedure discarded/fused a total of 0 labels/synchronizations in 1 ms.
[2026-05-27 00:01:33] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1911702746353177288.gal : 5 ms
[2026-05-27 00:01:33] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality7466755523139111357.prop : 2 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality1911702746353177288.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality7466755523139111357.prop' '--nowitness'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...307
Loading property file /tmp/ReachabilityCardinality7466755523139111357.prop.
BEST_FIRST walk for 40003 steps (8 resets) in 732 ms. (54 steps per ms) remains 5/7 properties
FORMULA Kanban-PT-50000-ReachabilityFireability-2024-10 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Kanban-PT-50000-ReachabilityFireability-2024-01 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
ITS-tools command line returned an error code 1
An unexpected exception occurred : Overflow error when converting initial marking. Please recompile libDDD with larger DDD::val_t definition.
BEST_FIRST walk for 40004 steps (8 resets) in 512 ms. (77 steps per ms) remains 4/5 properties
FORMULA Kanban-PT-50000-ReachabilityFireability-2024-15 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-11615177380384205043.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-6059111179352773088.kers'
[2026-05-27 00:01:33] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-11615177380384205043.kers, --Pflows, --basisKERS=/tmp/petrispot-output-6059111179352773088.kers]
Culling duplicate invariants (modulo rational): removing 1 columns.
Culled 1 columns in 0 ms.
// Phase 1: matrix 16 rows 15 cols 38 entries
Finished phase 1 with 11 SingleSign rule and 0 generalized
[2026-05-27 00:01:33] [INFO ] Computed 5 invariants in 0 ms
Computed 5 P flows in 1 ms.
Exported basis to /tmp/petrispot-output-6059111179352773088.kers
Total runtime 1 ms.
Problem Kanban-PT-50000-ReachabilityFireability-2024-00 is UNSAT
FORMULA Kanban-PT-50000-ReachabilityFireability-2024-00 TRUE TECHNIQUES SMT_REFINEMENT
Problem Kanban-PT-50000-ReachabilityFireability-2024-03 is UNSAT
FORMULA Kanban-PT-50000-ReachabilityFireability-2024-03 TRUE TECHNIQUES SMT_REFINEMENT
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/16 variables, 4/4 constraints. Problems are: Problem set: 2 solved, 2 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/16 variables, 1/5 constraints. Problems are: Problem set: 2 solved, 2 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/16 variables, 0/5 constraints. Problems are: Problem set: 2 solved, 2 unsolved
At refinement iteration 3 (OVERLAPS) 16/32 variables, 16/21 constraints. Problems are: Problem set: 2 solved, 2 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/32 variables, 0/21 constraints. Problems are: Problem set: 2 solved, 2 unsolved
At refinement iteration 5 (OVERLAPS) 0/32 variables, 0/21 constraints. Problems are: Problem set: 2 solved, 2 unsolved
No progress, stopping.
After SMT solving in domain Real declared 32/32 variables, and 21 constraints, problems are : Problem set: 2 solved, 2 unsolved in 274 ms.
Refiners :[Positive P Invariants (semi-flows): 4/4 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 16/16 constraints, PredecessorRefiner: 4/4 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 2 solved, 2 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/4 variables, 0/0 constraints. Problems are: Problem set: 2 solved, 2 unsolved
At refinement iteration 1 (OVERLAPS) 8/12 variables, 3/3 constraints. Problems are: Problem set: 2 solved, 2 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/12 variables, 0/3 constraints. Problems are: Problem set: 2 solved, 2 unsolved
At refinement iteration 3 (OVERLAPS) 3/15 variables, 1/4 constraints. Problems are: Problem set: 2 solved, 2 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/15 variables, 0/4 constraints. Problems are: Problem set: 2 solved, 2 unsolved
At refinement iteration 5 (OVERLAPS) 1/16 variables, 1/5 constraints. Problems are: Problem set: 2 solved, 2 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/16 variables, 0/5 constraints. Problems are: Problem set: 2 solved, 2 unsolved
At refinement iteration 7 (OVERLAPS) 16/32 variables, 16/21 constraints. Problems are: Problem set: 2 solved, 2 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/32 variables, 2/23 constraints. Problems are: Problem set: 2 solved, 2 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/32 variables, 0/23 constraints. Problems are: Problem set: 2 solved, 2 unsolved
At refinement iteration 10 (OVERLAPS) 0/32 variables, 0/23 constraints. Problems are: Problem set: 2 solved, 2 unsolved
No progress, stopping.
After SMT solving in domain Int declared 32/32 variables, and 23 constraints, problems are : Problem set: 2 solved, 2 unsolved in 155 ms.
Refiners :[Positive P Invariants (semi-flows): 4/4 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 16/16 constraints, PredecessorRefiner: 2/4 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 639ms problems are : Problem set: 2 solved, 2 unsolved
Fused 2 Parikh solutions to 1 different solutions.
Finished Parikh walk after 99989 steps, including 0 resets, run visited all 2 properties in 1169 ms. (steps per millisecond=85 )
FORMULA Kanban-PT-50000-ReachabilityFireability-2024-14 FALSE TECHNIQUES PARIKH_WALK
FORMULA Kanban-PT-50000-ReachabilityFireability-2024-02 TRUE TECHNIQUES PARIKH_WALK
Parikh walk visited 2 properties in 1177 ms.
All properties solved without resorting to model-checking.
Total runtime 3740 ms.

BK_STOP 1779840095391

--------------------
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
+ [[ ReachabilityFireability = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution ReachabilityFireability -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
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202604301425.jar
+ VERSION=202604301425
+ echo 'Running Version 202604301425'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination ReachabilityFireability -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="Kanban-PT-50000"
export BK_EXAMINATION="ReachabilityFireability"
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 2-5973"
echo " Executing tool itstools"
echo " Input is Kanban-PT-50000, 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 r162-smll-177961107800335"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/Kanban-PT-50000.tgz
mv Kanban-PT-50000 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.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 ;