Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2021-input.r094-tall-162048902400115.qcow2', fmt=qcow2 size=4294967296 backing_file='/data/fkordon/mcc2021-input.qcow2' encryption=off cluster_size=65536 lazy_refcounts=off
Waiting for the VM to be ready (probing ssh)
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=====================================================================
Generated by BenchKit 2-4028
Executing tool gold2020
Input is Diffusion2D-PT-D50N150, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r094-tall-162048902400115
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 7.7M
-rw-r--r-- 1 mcc users 27K May 5 16:58 CTLCardinality.txt
-rw-r--r-- 1 mcc users 174K May 10 09:42 CTLCardinality.xml
-rw-r--r-- 1 mcc users 11K May 5 16:58 CTLFireability.txt
-rw-r--r-- 1 mcc users 57K May 10 09:42 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 6 14:48 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.3K May 6 14:48 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.7K Mar 28 16:03 LTLCardinality.txt
-rw-r--r-- 1 mcc users 22K Mar 28 16:03 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.5K Mar 28 16:03 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Mar 28 16:03 LTLFireability.xml
-rw-r--r-- 1 mcc users 4.1K Mar 23 10:20 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 19K Mar 23 10:20 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 3.1K Mar 22 17:58 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 15K Mar 22 17:58 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Mar 22 09:11 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.9K Mar 22 09:11 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 5 16:51 equiv_col
-rw-r--r-- 1 mcc users 8 May 5 16:51 instance
-rw-r--r-- 1 mcc users 6 May 5 16:51 iscolored
-rw-r--r-- 1 mcc users 7.3M May 5 16:51 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 Diffusion2D-PT-D50N150-ReachabilityCardinality-00
FORMULA_NAME Diffusion2D-PT-D50N150-ReachabilityCardinality-01
FORMULA_NAME Diffusion2D-PT-D50N150-ReachabilityCardinality-02
FORMULA_NAME Diffusion2D-PT-D50N150-ReachabilityCardinality-03
FORMULA_NAME Diffusion2D-PT-D50N150-ReachabilityCardinality-04
FORMULA_NAME Diffusion2D-PT-D50N150-ReachabilityCardinality-05
FORMULA_NAME Diffusion2D-PT-D50N150-ReachabilityCardinality-06
FORMULA_NAME Diffusion2D-PT-D50N150-ReachabilityCardinality-07
FORMULA_NAME Diffusion2D-PT-D50N150-ReachabilityCardinality-08
FORMULA_NAME Diffusion2D-PT-D50N150-ReachabilityCardinality-09
FORMULA_NAME Diffusion2D-PT-D50N150-ReachabilityCardinality-10
FORMULA_NAME Diffusion2D-PT-D50N150-ReachabilityCardinality-11
FORMULA_NAME Diffusion2D-PT-D50N150-ReachabilityCardinality-12
FORMULA_NAME Diffusion2D-PT-D50N150-ReachabilityCardinality-13
FORMULA_NAME Diffusion2D-PT-D50N150-ReachabilityCardinality-14
FORMULA_NAME Diffusion2D-PT-D50N150-ReachabilityCardinality-15

=== Now, execution of the tool begins

BK_START 1620734241010

bash -c /home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n "BK_STOP " ; date -u +%s%3N
[2021-05-11 11:57:22] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityCardinality, -z3path, /home/mcc/BenchKit//z3/bin/z3, -yices2path, /home/mcc/BenchKit//yices/bin/yices, -timeout, 3600, -rebuildPNML]
[2021-05-11 11:57:22] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2021-05-11 11:57:22] [INFO ] Load time of PNML (sax parser for PT used): 411 ms
[2021-05-11 11:57:23] [INFO ] Transformed 2500 places.
[2021-05-11 11:57:23] [INFO ] Transformed 19404 transitions.
[2021-05-11 11:57:23] [INFO ] Parsed PT model containing 2500 places and 19404 transitions in 514 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityCardinality.xml in 160 ms.
Working with output stream class java.io.PrintStream
Incomplete random walk after 10105 steps, including 0 resets, run finished after 19 ms. (steps per millisecond=531 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 20 ms. (steps per millisecond=500 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 22 ms. (steps per millisecond=454 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 15 ms. (steps per millisecond=666 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 10 ms. (steps per millisecond=1000 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 11 ms. (steps per millisecond=909 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 11 ms. (steps per millisecond=909 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 8 ms. (steps per millisecond=1250 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 12 ms. (steps per millisecond=833 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 13 ms. (steps per millisecond=769 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 10 ms. (steps per millisecond=1000 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 12 ms. (steps per millisecond=833 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 7 ms. (steps per millisecond=1428 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 13 ms. (steps per millisecond=769 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 8 ms. (steps per millisecond=1250 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 11 ms. (steps per millisecond=909 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 10 ms. (steps per millisecond=1000 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Interrupted probabilistic random walk after 4733170 steps, run timeout after 30001 ms. (steps per millisecond=157 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1]
Probabilistic random walk after 4733170 steps, saw 109009 distinct states, run finished after 30001 ms. (steps per millisecond=157 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1]
FORMULA Diffusion2D-PT-D50N150-ReachabilityCardinality-15 FALSE TECHNIQUES TOPOLOGICAL PROBABILISTIC_WALK
// Phase 1: matrix 19404 rows 2500 cols
[2021-05-11 11:57:53] [INFO ] Computed 1 place invariants in 226 ms
[2021-05-11 11:57:54] [INFO ] [Real]Absence check using 1 positive place invariants in 47 ms returned sat
[2021-05-11 11:57:54] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-11 11:57:58] [INFO ] [Real]Absence check using state equation in 4617 ms returned (error "Solver has unexpectedly terminated")
[2021-05-11 11:57:59] [INFO ] [Real]Absence check using 1 positive place invariants in 37 ms returned sat
[2021-05-11 11:57:59] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-11 11:58:03] [INFO ] SMT solver returned unknown. Retrying;
[2021-05-11 11:58:03] [INFO ] [Real]Absence check using state equation in 4777 ms returned (error "Failed to check-sat")
[2021-05-11 11:58:04] [INFO ] [Real]Absence check using 1 positive place invariants in 37 ms returned sat
[2021-05-11 11:58:04] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-11 11:58:08] [INFO ] SMT solver returned unknown. Retrying;
[2021-05-11 11:58:08] [INFO ] [Real]Absence check using state equation in 4773 ms returned (error "Failed to check-sat")
[2021-05-11 11:58:09] [INFO ] [Real]Absence check using 1 positive place invariants in 37 ms returned sat
[2021-05-11 11:58:09] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-11 11:58:13] [INFO ] SMT solver returned unknown. Retrying;
[2021-05-11 11:58:13] [INFO ] [Real]Absence check using state equation in 4775 ms returned (error "Failed to check-sat")
[2021-05-11 11:58:14] [INFO ] [Real]Absence check using 1 positive place invariants in 37 ms returned sat
[2021-05-11 11:58:14] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-11 11:58:18] [INFO ] SMT solver returned unknown. Retrying;
[2021-05-11 11:58:18] [INFO ] [Real]Absence check using state equation in 4775 ms returned (error "Failed to check-sat")
[2021-05-11 11:58:19] [INFO ] [Real]Absence check using 1 positive place invariants in 37 ms returned sat
[2021-05-11 11:58:19] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-11 11:58:23] [INFO ] SMT solver returned unknown. Retrying;
[2021-05-11 11:58:23] [INFO ] [Real]Absence check using state equation in 4779 ms returned (error "Failed to check-sat")
[2021-05-11 11:58:24] [INFO ] [Real]Absence check using 1 positive place invariants in 37 ms returned sat
[2021-05-11 11:58:24] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-11 11:58:28] [INFO ] SMT solver returned unknown. Retrying;
[2021-05-11 11:58:28] [INFO ] [Real]Absence check using state equation in 4776 ms returned (error "Failed to check-sat")
[2021-05-11 11:58:29] [INFO ] [Real]Absence check using 1 positive place invariants in 36 ms returned sat
[2021-05-11 11:58:29] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-11 11:58:33] [INFO ] SMT solver returned unknown. Retrying;
[2021-05-11 11:58:33] [INFO ] [Real]Absence check using state equation in 4771 ms returned unknown
[2021-05-11 11:58:34] [INFO ] [Real]Absence check using 1 positive place invariants in 37 ms returned sat
[2021-05-11 11:58:34] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-11 11:58:38] [INFO ] SMT solver returned unknown. Retrying;
[2021-05-11 11:58:38] [INFO ] [Real]Absence check using state equation in 4771 ms returned (error "Failed to check-sat")
[2021-05-11 11:58:39] [INFO ] [Real]Absence check using 1 positive place invariants in 37 ms returned sat
[2021-05-11 11:58:39] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-11 11:58:43] [INFO ] SMT solver returned unknown. Retrying;
[2021-05-11 11:58:43] [INFO ] [Real]Absence check using state equation in 4763 ms returned (error "Failed to check-sat")
[2021-05-11 11:58:44] [INFO ] [Real]Absence check using 1 positive place invariants in 37 ms returned sat
[2021-05-11 11:58:44] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-11 11:58:48] [INFO ] SMT solver returned unknown. Retrying;
[2021-05-11 11:58:48] [INFO ] [Real]Absence check using state equation in 4768 ms returned (error "Failed to check-sat")
[2021-05-11 11:58:49] [INFO ] [Real]Absence check using 1 positive place invariants in 37 ms returned sat
[2021-05-11 11:58:49] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-11 11:58:53] [INFO ] SMT solver returned unknown. Retrying;
[2021-05-11 11:58:53] [INFO ] [Real]Absence check using state equation in 4772 ms returned (error "Failed to check-sat")
[2021-05-11 11:58:54] [INFO ] [Real]Absence check using 1 positive place invariants in 37 ms returned sat
[2021-05-11 11:58:54] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-11 11:58:58] [INFO ] [Real]Absence check using state equation in 4774 ms returned (error "Solver has unexpectedly terminated")
[2021-05-11 11:58:59] [INFO ] [Real]Absence check using 1 positive place invariants in 37 ms returned sat
[2021-05-11 11:58:59] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-11 11:59:03] [INFO ] [Real]Absence check using state equation in 4779 ms returned (error "Solver has unexpectedly terminated")
[2021-05-11 11:59:04] [INFO ] [Real]Absence check using 1 positive place invariants in 36 ms returned sat
[2021-05-11 11:59:04] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-11 11:59:08] [INFO ] SMT solver returned unknown. Retrying;
[2021-05-11 11:59:08] [INFO ] [Real]Absence check using state equation in 4772 ms returned (error "Failed to check-sat")
Support contains 64 out of 2500 places. Attempting structural reductions.
Starting structural reductions, iteration 0 : 2500/2500 places, 19404/19404 transitions.
Graph (trivial) has 18400 edges and 2500 vertex of which 2436 / 2500 are part of one of the 1 SCC in 35 ms
Free SCC test removed 2435 places
Drop transitions removed 18400 transitions
Ensure Unique test removed 868 transitions
Reduce isomorphic transitions removed 19268 transitions.
Iterating post reduction 0 with 19268 rules applied. Total rules applied 19269 place count 65 transition count 136
Drop transitions removed 12 transitions
Redundant transition composition rules discarded 12 transitions
Iterating global reduction 1 with 12 rules applied. Total rules applied 19281 place count 65 transition count 124
Applied a total of 19281 rules in 146 ms. Remains 65 /2500 variables (removed 2435) and now considering 124/19404 (removed 19280) transitions.
Finished structural reductions, in 1 iterations. Remains : 65/2500 places, 124/19404 transitions.
Incomplete random walk after 1000084 steps, including 0 resets, run finished after 171 ms. (steps per millisecond=5848 ) properties seen :[1, 1, 0, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1]
FORMULA Diffusion2D-PT-D50N150-ReachabilityCardinality-14 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA Diffusion2D-PT-D50N150-ReachabilityCardinality-13 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA Diffusion2D-PT-D50N150-ReachabilityCardinality-12 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA Diffusion2D-PT-D50N150-ReachabilityCardinality-11 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA Diffusion2D-PT-D50N150-ReachabilityCardinality-10 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA Diffusion2D-PT-D50N150-ReachabilityCardinality-09 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA Diffusion2D-PT-D50N150-ReachabilityCardinality-07 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA Diffusion2D-PT-D50N150-ReachabilityCardinality-06 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA Diffusion2D-PT-D50N150-ReachabilityCardinality-05 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA Diffusion2D-PT-D50N150-ReachabilityCardinality-04 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA Diffusion2D-PT-D50N150-ReachabilityCardinality-03 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA Diffusion2D-PT-D50N150-ReachabilityCardinality-01 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA Diffusion2D-PT-D50N150-ReachabilityCardinality-00 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Finished Best-First random walk after 193094 steps, including 0 resets, run visited all 2 properties in 218 ms. (steps per millisecond=885 )
FORMULA Diffusion2D-PT-D50N150-ReachabilityCardinality-08 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA Diffusion2D-PT-D50N150-ReachabilityCardinality-02 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
All properties solved without resorting to model-checking.

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

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-D50N150"
export BK_EXAMINATION="ReachabilityCardinality"
export BK_TOOL="gold2020"
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 2-4028"
echo " Executing tool gold2020"
echo " Input is Diffusion2D-PT-D50N150, examination is ReachabilityCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r094-tall-162048902400115"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/Diffusion2D-PT-D50N150.tgz
mv Diffusion2D-PT-D50N150 execution
cd execution
if [ "ReachabilityCardinality" = "ReachabilityDeadlock" ] || [ "ReachabilityCardinality" = "UpperBounds" ] || [ "ReachabilityCardinality" = "QuasiLiveness" ] || [ "ReachabilityCardinality" = "StableMarking" ] || [ "ReachabilityCardinality" = "Liveness" ] || [ "ReachabilityCardinality" = "OneSafe" ] || [ "ReachabilityCardinality" = "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 [ "ReachabilityCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityCardinality" != "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 "ReachabilityCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityCardinality.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 '' ReachabilityCardinality.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "ReachabilityCardinality" = "ReachabilityDeadlock" ] || [ "ReachabilityCardinality" = "QuasiLiveness" ] || [ "ReachabilityCardinality" = "StableMarking" ] || [ "ReachabilityCardinality" = "Liveness" ] || [ "ReachabilityCardinality" = "OneSafe" ] ; then
echo "FORMULA_NAME ReachabilityCardinality"
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 ;