Execution Chart

Sorry, for this execution, no execution chart could be reported.

Trace from the execution

Formatting '/data/fkordon/mcc2025-input.r058-smll-174854064400543.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2025-input.qcow2 backing_fmt=qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
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=====================================================================
Generated by BenchKit 2-5832
Executing tool itstools
Input is Diffusion2D-PT-D30N150, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r058-smll-174854064400543
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 3.5M
-rw-r--r-- 1 mcc users 7.6K May 29 14:47 CTLCardinality.txt
-rw-r--r-- 1 mcc users 68K May 29 14:47 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.8K May 29 14:47 CTLFireability.txt
-rw-r--r-- 1 mcc users 53K May 29 14:47 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 29 14:32 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.3K May 29 14:32 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 4.2K May 29 14:47 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K May 29 14:47 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.8K May 29 14:47 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K May 29 14:47 LTLFireability.xml
-rw-r--r-- 1 mcc users 12K May 29 14:47 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 102K May 29 14:47 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.1K May 29 14:47 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 61K May 29 14:47 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K May 29 14:47 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.9K May 29 14:47 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 29 14:32 equiv_col
-rw-r--r-- 1 mcc users 8 May 29 14:32 instance
-rw-r--r-- 1 mcc users 6 May 29 14:32 iscolored
-rw-r--r-- 1 mcc users 3.0M May 29 14:32 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 Diffusion2D-PT-D30N150-ReachabilityFireability-2025-00
FORMULA_NAME Diffusion2D-PT-D30N150-ReachabilityFireability-2025-01
FORMULA_NAME Diffusion2D-PT-D30N150-ReachabilityFireability-2025-02
FORMULA_NAME Diffusion2D-PT-D30N150-ReachabilityFireability-2025-03
FORMULA_NAME Diffusion2D-PT-D30N150-ReachabilityFireability-2025-04
FORMULA_NAME Diffusion2D-PT-D30N150-ReachabilityFireability-2025-05
FORMULA_NAME Diffusion2D-PT-D30N150-ReachabilityFireability-2025-06
FORMULA_NAME Diffusion2D-PT-D30N150-ReachabilityFireability-2025-07
FORMULA_NAME Diffusion2D-PT-D30N150-ReachabilityFireability-2025-08
FORMULA_NAME Diffusion2D-PT-D30N150-ReachabilityFireability-2025-09
FORMULA_NAME Diffusion2D-PT-D30N150-ReachabilityFireability-2025-10
FORMULA_NAME Diffusion2D-PT-D30N150-ReachabilityFireability-2025-11
FORMULA_NAME Diffusion2D-PT-D30N150-ReachabilityFireability-2025-12
FORMULA_NAME Diffusion2D-PT-D30N150-ReachabilityFireability-2025-13
FORMULA_NAME Diffusion2D-PT-D30N150-ReachabilityFireability-2025-14
FORMULA_NAME Diffusion2D-PT-D30N150-ReachabilityFireability-2025-15

=== Now, execution of the tool begins

BK_START 1748855638951

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=ReachabilityFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=Diffusion2D-PT-D30N150
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
ReachabilityFireability PT
Running Version 202505121319
[2025-06-02 09:14:00] [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]
[2025-06-02 09:14:00] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2025-06-02 09:14:01] [INFO ] Load time of PNML (sax parser for PT used): 532 ms
[2025-06-02 09:14:01] [INFO ] Transformed 900 places.
[2025-06-02 09:14:01] [INFO ] Transformed 6844 transitions.
[2025-06-02 09:14:01] [INFO ] Parsed PT model containing 900 places and 6844 transitions and 13688 arcs in 715 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 23 ms.
Working with output stream class java.io.PrintStream
RANDOM walk for 40480 steps (8 resets) in 308 ms. (131 steps per ms) remains 15/16 properties
FORMULA Diffusion2D-PT-D30N150-ReachabilityFireability-2025-15 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
BEST_FIRST walk for 4004 steps (8 resets) in 76 ms. (52 steps per ms) remains 15/15 properties
BEST_FIRST walk for 4004 steps (8 resets) in 33 ms. (117 steps per ms) remains 15/15 properties
BEST_FIRST walk for 4003 steps (8 resets) in 114 ms. (34 steps per ms) remains 15/15 properties
BEST_FIRST walk for 4004 steps (8 resets) in 28 ms. (138 steps per ms) remains 15/15 properties
BEST_FIRST walk for 4004 steps (8 resets) in 69 ms. (57 steps per ms) remains 15/15 properties
BEST_FIRST walk for 4004 steps (8 resets) in 72 ms. (54 steps per ms) remains 15/15 properties
BEST_FIRST walk for 4004 steps (8 resets) in 79 ms. (50 steps per ms) remains 15/15 properties
BEST_FIRST walk for 4004 steps (8 resets) in 68 ms. (58 steps per ms) remains 15/15 properties
BEST_FIRST walk for 4004 steps (8 resets) in 33 ms. (117 steps per ms) remains 15/15 properties
BEST_FIRST walk for 4004 steps (8 resets) in 29 ms. (133 steps per ms) remains 15/15 properties
BEST_FIRST walk for 4004 steps (8 resets) in 45 ms. (87 steps per ms) remains 15/15 properties
BEST_FIRST walk for 4004 steps (8 resets) in 61 ms. (64 steps per ms) remains 15/15 properties
BEST_FIRST walk for 4004 steps (8 resets) in 53 ms. (74 steps per ms) remains 15/15 properties
BEST_FIRST walk for 4004 steps (8 resets) in 46 ms. (85 steps per ms) remains 15/15 properties
BEST_FIRST walk for 4004 steps (8 resets) in 12 ms. (308 steps per ms) remains 15/15 properties
[2025-06-02 09:14:02] [INFO ] Flatten gal took : 601 ms
[2025-06-02 09:14:03] [INFO ] Flatten gal took : 455 ms
[2025-06-02 09:14:03] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality5530160971625565199.gal : 213 ms
[2025-06-02 09:14:03] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality15325563003784085267.prop : 9 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality5530160971625565199.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality15325563003784085267.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
Loading property file /tmp/ReachabilityCardinality15325563003784085267.prop.
Interrupted probabilistic random walk after 129351 steps, run timeout after 3001 ms. (steps per millisecond=43 ) properties seen :1 out of 15
Probabilistic random walk after 129351 steps, saw 105641 distinct states, run finished after 3014 ms. (steps per millisecond=42 ) properties seen :1
FORMULA Diffusion2D-PT-D30N150-ReachabilityFireability-2025-10 TRUE TECHNIQUES TOPOLOGICAL PROBABILISTIC_WALK
// Phase 1: matrix 6844 rows 900 cols
[2025-06-02 09:14:05] [INFO ] Computed 1 invariants in 96 ms
Excessive predecessor constraint size, skipping predecessor.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/158 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 14 unsolved
At refinement iteration 1 (OVERLAPS) 742/900 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 14 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/900 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 14 unsolved
At refinement iteration 3 (OVERLAPS) 6844/7744 variables, 900/901 constraints. Problems are: Problem set: 0 solved, 14 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/7744 variables, 0/901 constraints. Problems are: Problem set: 0 solved, 14 unsolved
SDD proceeding with computation,15 properties remain. new max is 4
SDD size :1 after 17
Reachability property Diffusion2D-PT-D30N150-ReachabilityFireability-2025-10 is true.
SDD proceeding with computation,14 properties remain. new max is 4
SDD size :17 after 32
Reachability property Diffusion2D-PT-D30N150-ReachabilityFireability-2025-13 is true.
FORMULA Diffusion2D-PT-D30N150-ReachabilityFireability-2025-13 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
SDD proceeding with computation,13 properties remain. new max is 4
SDD size :32 after 47
SDD proceeding with computation,13 properties remain. new max is 8
SDD size :47 after 53
SDD proceeding with computation,13 properties remain. new max is 16
SDD size :53 after 59
Invariant property Diffusion2D-PT-D30N150-ReachabilityFireability-2025-11 does not hold.
FORMULA Diffusion2D-PT-D30N150-ReachabilityFireability-2025-11 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
SDD proceeding with computation,12 properties remain. new max is 16
SDD size :59 after 76
SDD proceeding with computation,12 properties remain. new max is 32
SDD size :76 after 90
SDD proceeding with computation,12 properties remain. new max is 64
SDD size :90 after 115
Invariant property Diffusion2D-PT-D30N150-ReachabilityFireability-2025-12 does not hold.
FORMULA Diffusion2D-PT-D30N150-ReachabilityFireability-2025-12 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
SDD proceeding with computation,11 properties remain. new max is 64
SDD size :115 after 167
SDD proceeding with computation,11 properties remain. new max is 128
SDD size :167 after 226
Reachability property Diffusion2D-PT-D30N150-ReachabilityFireability-2025-08 is true.
FORMULA Diffusion2D-PT-D30N150-ReachabilityFireability-2025-08 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
Invariant property Diffusion2D-PT-D30N150-ReachabilityFireability-2025-01 does not hold.
FORMULA Diffusion2D-PT-D30N150-ReachabilityFireability-2025-01 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
SDD proceeding with computation,9 properties remain. new max is 128
SDD size :226 after 343
Error getting values : (error "ParserException while parsing response: (timeout
org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 7744/7744 variables, and 901 constraints, problems are : Problem set: 5 solved, 9 unsolved in 5056 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 900/900 constraints, PredecessorRefiner: 14/6 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 5 solved, 9 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
SDD proceeding with computation,9 properties remain. new max is 256
SDD size :343 after 456
SDD proceeding with computation,9 properties remain. new max is 512
SDD size :456 after 18491
At refinement iteration 0 (INCLUDED_ONLY) 0/116 variables, 0/0 constraints. Problems are: Problem set: 5 solved, 9 unsolved
Reachability property Diffusion2D-PT-D30N150-ReachabilityFireability-2025-04 is true.
FORMULA Diffusion2D-PT-D30N150-ReachabilityFireability-2025-04 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
Reachability property Diffusion2D-PT-D30N150-ReachabilityFireability-2025-00 is true.
FORMULA Diffusion2D-PT-D30N150-ReachabilityFireability-2025-00 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
SDD proceeding with computation,7 properties remain. new max is 512
SDD size :18491 after 70837
Reachability property Diffusion2D-PT-D30N150-ReachabilityFireability-2025-14 is true.
FORMULA Diffusion2D-PT-D30N150-ReachabilityFireability-2025-14 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
At refinement iteration 1 (OVERLAPS) 784/900 variables, 1/1 constraints. Problems are: Problem set: 8 solved, 6 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/900 variables, 0/1 constraints. Problems are: Problem set: 8 solved, 6 unsolved
SDD proceeding with computation,6 properties remain. new max is 512
SDD size :70837 after 4.48976e+06
At refinement iteration 3 (OVERLAPS) 6844/7744 variables, 900/901 constraints. Problems are: Problem set: 8 solved, 6 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/7744 variables, 2/903 constraints. Problems are: Problem set: 8 solved, 6 unsolved
SDD proceeding with computation,6 properties remain. new max is 1024
SDD size :4.48976e+06 after 1.13166e+07
At refinement iteration 5 (INCLUDED_ONLY) 0/7744 variables, 0/903 constraints. Problems are: Problem set: 8 solved, 6 unsolved
Error getting values : (error "ParserException while parsing response: (timeout
org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 7744/7744 variables, and 903 constraints, problems are : Problem set: 8 solved, 6 unsolved in 5013 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 900/900 constraints, PredecessorRefiner: 8/6 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 10449ms problems are : Problem set: 8 solved, 6 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 83 out of 900 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 900/900 places, 6844/6844 transitions.
Graph (trivial) has 5644 edges and 900 vertex of which 817 / 900 are part of one of the 1 SCC in 16 ms
Free SCC test removed 816 places
Drop transitions (Empty/Sink Transition effects.) removed 5644 transitions
Ensure Unique test removed 960 transitions
Reduce isomorphic transitions removed 6604 transitions.
Drop transitions (Redundant composition of simpler transitions.) removed 86 transitions
Redundant transition composition rules discarded 86 transitions
Iterating global reduction 0 with 86 rules applied. Total rules applied 87 place count 84 transition count 154
Applied a total of 87 rules in 107 ms. Remains 84 /900 variables (removed 816) and now considering 154/6844 (removed 6690) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 118 ms. Remains : 84/900 places, 154/6844 transitions.
RANDOM walk for 40499 steps (8 resets) in 51 ms. (778 steps per ms) remains 4/6 properties
FORMULA Diffusion2D-PT-D30N150-ReachabilityFireability-2025-05 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA Diffusion2D-PT-D30N150-ReachabilityFireability-2025-03 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
BEST_FIRST walk for 40004 steps (8 resets) in 294 ms. (135 steps per ms) remains 1/4 properties
FORMULA Diffusion2D-PT-D30N150-ReachabilityFireability-2025-09 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Diffusion2D-PT-D30N150-ReachabilityFireability-2025-06 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Diffusion2D-PT-D30N150-ReachabilityFireability-2025-02 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 780 steps (0 resets) in 5 ms. (130 steps per ms) remains 0/1 properties
FORMULA Diffusion2D-PT-D30N150-ReachabilityFireability-2025-07 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
All properties solved without resorting to model-checking.
Total runtime 15206 ms.

BK_STOP 1748855656134

--------------------
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_1.0.0.202505121319.jar
+ VERSION=202505121319
+ echo 'Running Version 202505121319'
+ /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="Diffusion2D-PT-D30N150"
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 2-5832"
echo " Executing tool itstools"
echo " Input is Diffusion2D-PT-D30N150, 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 r058-smll-174854064400543"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/Diffusion2D-PT-D30N150.tgz
mv Diffusion2D-PT-D30N150 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 ;