fond
Model Checking Contest 2021
11th edition, Paris, France, June 23, 2021
Execution of r056-oct2-162038334600136
Last Updated
Jun 28, 2021

About the Execution of 2020-gold for CloudDeployment-PT-2a

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
325.995 3600000.00 20563.00 401.70 FTFTFFTTTFTFFTFT normal

Execution Chart

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

Trace from the execution

Formatting '/data/fko/mcc2021-input.r056-oct2-162038334600136.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fko/mcc2021-input.qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
....................................................................................................................................................................................................................................................................................................
=====================================================================
Generated by BenchKit 2-4028
Executing tool gold2020
Input is CloudDeployment-PT-2a, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r056-oct2-162038334600136
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 460K
-rw-r--r-- 1 mcc users 15K May 5 16:58 CTLCardinality.txt
-rw-r--r-- 1 mcc users 151K May 10 09:42 CTLCardinality.xml
-rw-r--r-- 1 mcc users 9.3K May 5 16:58 CTLFireability.txt
-rw-r--r-- 1 mcc users 88K 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 6.8K May 6 14:48 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.4K Mar 28 15:51 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K Mar 28 15:51 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.0K Mar 28 15:51 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Mar 28 15:51 LTLFireability.xml
-rw-r--r-- 1 mcc users 3.2K Mar 23 03:06 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 16K Mar 23 03:06 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 3.1K Mar 22 12:34 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 21K Mar 22 12:34 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Mar 22 09:10 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Mar 22 09:10 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 5 16:51 equiv_col
-rw-r--r-- 1 mcc users 3 May 5 16:51 instance
-rw-r--r-- 1 mcc users 6 May 5 16:51 iscolored
-rw-r--r-- 1 mcc users 51K 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 CloudDeployment-PT-2a-ReachabilityFireability-00
FORMULA_NAME CloudDeployment-PT-2a-ReachabilityFireability-01
FORMULA_NAME CloudDeployment-PT-2a-ReachabilityFireability-02
FORMULA_NAME CloudDeployment-PT-2a-ReachabilityFireability-03
FORMULA_NAME CloudDeployment-PT-2a-ReachabilityFireability-04
FORMULA_NAME CloudDeployment-PT-2a-ReachabilityFireability-05
FORMULA_NAME CloudDeployment-PT-2a-ReachabilityFireability-06
FORMULA_NAME CloudDeployment-PT-2a-ReachabilityFireability-07
FORMULA_NAME CloudDeployment-PT-2a-ReachabilityFireability-08
FORMULA_NAME CloudDeployment-PT-2a-ReachabilityFireability-09
FORMULA_NAME CloudDeployment-PT-2a-ReachabilityFireability-10
FORMULA_NAME CloudDeployment-PT-2a-ReachabilityFireability-11
FORMULA_NAME CloudDeployment-PT-2a-ReachabilityFireability-12
FORMULA_NAME CloudDeployment-PT-2a-ReachabilityFireability-13
FORMULA_NAME CloudDeployment-PT-2a-ReachabilityFireability-14
FORMULA_NAME CloudDeployment-PT-2a-ReachabilityFireability-15

=== Now, execution of the tool begins

BK_START 1620899360597

bash -c /home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n "BK_STOP " ; date -u +%s%3N
[2021-05-13 09:49:24] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityFireability, -z3path, /home/mcc/BenchKit//z3/bin/z3, -yices2path, /home/mcc/BenchKit//yices/bin/yices, -timeout, 3600, -rebuildPNML]
[2021-05-13 09:49:24] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2021-05-13 09:49:24] [INFO ] Load time of PNML (sax parser for PT used): 43 ms
[2021-05-13 09:49:24] [INFO ] Transformed 69 places.
[2021-05-13 09:49:24] [INFO ] Transformed 174 transitions.
[2021-05-13 09:49:24] [INFO ] Found NUPN structural information;
[2021-05-13 09:49:24] [INFO ] Parsed PT model containing 69 places and 174 transitions in 81 ms.
Ensure Unique test removed 14 transitions
Reduce redundant transitions removed 14 transitions.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 50 ms.
Working with output stream class java.io.PrintStream
FORMULA CloudDeployment-PT-2a-ReachabilityFireability-08 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Incomplete random walk after 10000 steps, including 313 resets, run finished after 54 ms. (steps per millisecond=185 ) properties seen :[0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
FORMULA CloudDeployment-PT-2a-ReachabilityFireability-02 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 10000 steps, including 106 resets, run finished after 19 ms. (steps per millisecond=526 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 54 resets, run finished after 17 ms. (steps per millisecond=588 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10000 steps, including 99 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]
Incomplete Best-First random walk after 10000 steps, including 1 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]
Incomplete Best-First random walk after 10001 steps, including 75 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]
Incomplete Best-First random walk after 10000 steps, including 3 resets, run finished after 35 ms. (steps per millisecond=285 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10000 steps, including 91 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]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 9 ms. (steps per millisecond=1111 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 2 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]
Incomplete Best-First random walk after 10001 steps, including 41 resets, run finished after 14 ms. (steps per millisecond=714 ) properties seen :[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]
Incomplete Best-First random walk after 10001 steps, including 61 resets, run finished after 9 ms. (steps per millisecond=1111 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10000 steps, including 69 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]
Incomplete Best-First random walk after 10001 steps, including 108 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]
[2021-05-13 09:49:24] [INFO ] Flow matrix only has 100 transitions (discarded 60 similar events)
// Phase 1: matrix 100 rows 69 cols
[2021-05-13 09:49:24] [INFO ] Computed 12 place invariants in 5 ms
[2021-05-13 09:49:24] [INFO ] [Real]Absence check using 0 positive and 12 generalized place invariants in 71 ms returned sat
[2021-05-13 09:49:24] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-13 09:49:25] [INFO ] [Real]Absence check using state equation in 179 ms returned sat
[2021-05-13 09:49:25] [INFO ] State equation strengthened by 30 read => feed constraints.
[2021-05-13 09:49:25] [INFO ] [Real]Added 30 Read/Feed constraints in 48 ms returned sat
[2021-05-13 09:49:25] [INFO ] Solution in real domain found non-integer solution.
[2021-05-13 09:49:26] [INFO ] [Nat]Absence check using 0 positive and 12 generalized place invariants in 931 ms returned sat
[2021-05-13 09:49:26] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2021-05-13 09:49:26] [INFO ] [Nat]Absence check using state equation in 441 ms returned sat
[2021-05-13 09:49:26] [INFO ] [Nat]Added 30 Read/Feed constraints in 7 ms returned sat
[2021-05-13 09:49:26] [INFO ] Computed and/alt/rep : 159/656/99 causal constraints in 84 ms.
[2021-05-13 09:49:26] [INFO ] Added : 74 causal constraints over 16 iterations in 324 ms. Result :sat
Attempting to minimize the solution found.
Minimization took 4 ms.
[2021-05-13 09:49:27] [INFO ] [Real]Absence check using 0 positive and 12 generalized place invariants in 4 ms returned unsat
[2021-05-13 09:49:27] [INFO ] [Real]Absence check using 0 positive and 12 generalized place invariants in 17 ms returned unsat
[2021-05-13 09:49:27] [INFO ] [Real]Absence check using 0 positive and 12 generalized place invariants in 5 ms returned sat
[2021-05-13 09:49:27] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-13 09:49:27] [INFO ] [Real]Absence check using state equation in 14 ms returned unsat
[2021-05-13 09:49:27] [INFO ] [Real]Absence check using 0 positive and 12 generalized place invariants in 4 ms returned unsat
[2021-05-13 09:49:27] [INFO ] [Real]Absence check using 0 positive and 12 generalized place invariants in 79 ms returned unsat
[2021-05-13 09:49:27] [INFO ] [Real]Absence check using 0 positive and 12 generalized place invariants in 55 ms returned sat
[2021-05-13 09:49:27] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-13 09:49:27] [INFO ] [Real]Absence check using state equation in 72 ms returned unsat
[2021-05-13 09:49:27] [INFO ] [Real]Absence check using 0 positive and 12 generalized place invariants in 23 ms returned sat
[2021-05-13 09:49:27] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-13 09:49:27] [INFO ] [Real]Absence check using state equation in 16 ms returned unsat
[2021-05-13 09:49:27] [INFO ] [Real]Absence check using 0 positive and 12 generalized place invariants in 65 ms returned sat
[2021-05-13 09:49:27] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-13 09:49:27] [INFO ] [Real]Absence check using state equation in 85 ms returned unsat
[2021-05-13 09:49:27] [INFO ] [Real]Absence check using 0 positive and 12 generalized place invariants in 28 ms returned sat
[2021-05-13 09:49:27] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-13 09:49:27] [INFO ] [Real]Absence check using state equation in 44 ms returned unsat
[2021-05-13 09:49:27] [INFO ] [Real]Absence check using 0 positive and 12 generalized place invariants in 12 ms returned sat
[2021-05-13 09:49:27] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-13 09:49:27] [INFO ] [Real]Absence check using state equation in 11 ms returned unsat
[2021-05-13 09:49:27] [INFO ] [Real]Absence check using 0 positive and 12 generalized place invariants in 26 ms returned unsat
[2021-05-13 09:49:27] [INFO ] [Real]Absence check using 0 positive and 12 generalized place invariants in 9 ms returned sat
[2021-05-13 09:49:27] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-13 09:49:27] [INFO ] [Real]Absence check using state equation in 11 ms returned unsat
[2021-05-13 09:49:27] [INFO ] [Real]Absence check using 0 positive and 12 generalized place invariants in 9 ms returned sat
[2021-05-13 09:49:27] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-13 09:49:28] [INFO ] [Real]Absence check using state equation in 76 ms returned unsat
FORMULA CloudDeployment-PT-2a-ReachabilityFireability-15 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA CloudDeployment-PT-2a-ReachabilityFireability-14 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA CloudDeployment-PT-2a-ReachabilityFireability-13 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA CloudDeployment-PT-2a-ReachabilityFireability-12 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA CloudDeployment-PT-2a-ReachabilityFireability-11 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA CloudDeployment-PT-2a-ReachabilityFireability-10 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA CloudDeployment-PT-2a-ReachabilityFireability-09 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA CloudDeployment-PT-2a-ReachabilityFireability-07 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA CloudDeployment-PT-2a-ReachabilityFireability-06 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA CloudDeployment-PT-2a-ReachabilityFireability-05 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA CloudDeployment-PT-2a-ReachabilityFireability-04 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA CloudDeployment-PT-2a-ReachabilityFireability-03 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA CloudDeployment-PT-2a-ReachabilityFireability-01 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Incomplete Parikh walk after 8200 steps, including 244 resets, run finished after 13 ms. (steps per millisecond=630 ) properties seen :[0] could not realise parikh vector
Support contains 10 out of 69 places. Attempting structural reductions.
Starting structural reductions, iteration 0 : 69/69 places, 160/160 transitions.
Graph (trivial) has 75 edges and 69 vertex of which 20 / 69 are part of one of the 6 SCC in 48 ms
Free SCC test removed 14 places
Discarding 5 places :
Also discarding 0 output transitions
Graph (complete) has 233 edges and 55 vertex of which 50 are kept as prefixes of interest. Removing 5 places using SCC suffix rule.108 ms
Drop transitions removed 58 transitions
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 64 transitions.
Iterating post reduction 0 with 64 rules applied. Total rules applied 66 place count 50 transition count 96
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 1 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 1 with 4 rules applied. Total rules applied 70 place count 48 transition count 94
Performed 4 Post agglomeration using F-continuation condition.Transition count delta: -3
Deduced a syphon composed of 4 places in 0 ms
Reduce places removed 4 places and 0 transitions.
Iterating global reduction 1 with 8 rules applied. Total rules applied 78 place count 44 transition count 97
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 1 with 1 rules applied. Total rules applied 79 place count 44 transition count 98
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 1 with 1 rules applied. Total rules applied 80 place count 43 transition count 98
Partial Post-agglomeration rule applied 4 times.
Drop transitions removed 4 transitions
Iterating global reduction 2 with 4 rules applied. Total rules applied 84 place count 43 transition count 98
Drop transitions removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 2 with 2 rules applied. Total rules applied 86 place count 43 transition count 96
Drop transitions removed 15 transitions
Redundant transition composition rules discarded 15 transitions
Iterating global reduction 3 with 15 rules applied. Total rules applied 101 place count 43 transition count 81
Applied a total of 101 rules in 199 ms. Remains 43 /69 variables (removed 26) and now considering 81/160 (removed 79) transitions.
Finished structural reductions, in 1 iterations. Remains : 43/69 places, 81/160 transitions.
Incomplete random walk after 1000000 steps, including 37871 resets, run finished after 762 ms. (steps per millisecond=1312 ) properties seen :[0]
Incomplete Best-First random walk after 1000001 steps, including 14698 resets, run finished after 454 ms. (steps per millisecond=2202 ) properties seen :[0]
Probably explored full state space saw : 1567 states, properties seen :[0]
Probabilistic random walk after 6842 steps, saw 1567 distinct states, run finished after 18 ms. (steps per millisecond=380 ) properties seen :[0]
Explored full state space saw : 1567 states, properties seen :[0]
Exhaustive walk after 6842 steps, saw 1567 distinct states, run finished after 5 ms. (steps per millisecond=1368 ) properties seen :[0]
FORMULA CloudDeployment-PT-2a-ReachabilityFireability-00 FALSE TECHNIQUES TOPOLOGICAL EXHAUSTIVE_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="CloudDeployment-PT-2a"
export BK_EXAMINATION="ReachabilityFireability"
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 CloudDeployment-PT-2a, 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 r056-oct2-162038334600136"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/CloudDeployment-PT-2a.tgz
mv CloudDeployment-PT-2a 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 ;