Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2023-input.r170-tall-167838857500639.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2023-input.qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
=====================================================================
Generated by BenchKit 2-5348
Executing tool marciexred
Input is FunctionPointer-PT-a032, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r170-tall-167838857500639
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 444K
-rw-r--r-- 1 mcc users 5.5K Feb 25 11:54 CTLCardinality.txt
-rw-r--r-- 1 mcc users 55K Feb 25 11:54 CTLCardinality.xml
-rw-r--r-- 1 mcc users 4.0K Feb 25 11:53 CTLFireability.txt
-rw-r--r-- 1 mcc users 30K Feb 25 11:53 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.7K Feb 25 16:08 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K Feb 25 16:08 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.2K Feb 25 16:08 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Feb 25 16:08 LTLFireability.xml
-rw-r--r-- 1 mcc users 11K Feb 25 11:54 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 116K Feb 25 11:54 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.8K Feb 25 11:54 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 90K Feb 25 11:54 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Feb 25 16:08 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Feb 25 16:08 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 equiv_col
-rw-r--r-- 1 mcc users 5 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 34K Mar 5 18:22 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 FunctionPointer-PT-a032-ReachabilityFireability-00
FORMULA_NAME FunctionPointer-PT-a032-ReachabilityFireability-01
FORMULA_NAME FunctionPointer-PT-a032-ReachabilityFireability-02
FORMULA_NAME FunctionPointer-PT-a032-ReachabilityFireability-03
FORMULA_NAME FunctionPointer-PT-a032-ReachabilityFireability-04
FORMULA_NAME FunctionPointer-PT-a032-ReachabilityFireability-05
FORMULA_NAME FunctionPointer-PT-a032-ReachabilityFireability-06
FORMULA_NAME FunctionPointer-PT-a032-ReachabilityFireability-07
FORMULA_NAME FunctionPointer-PT-a032-ReachabilityFireability-08
FORMULA_NAME FunctionPointer-PT-a032-ReachabilityFireability-09
FORMULA_NAME FunctionPointer-PT-a032-ReachabilityFireability-10
FORMULA_NAME FunctionPointer-PT-a032-ReachabilityFireability-11
FORMULA_NAME FunctionPointer-PT-a032-ReachabilityFireability-12
FORMULA_NAME FunctionPointer-PT-a032-ReachabilityFireability-13
FORMULA_NAME FunctionPointer-PT-a032-ReachabilityFireability-14
FORMULA_NAME FunctionPointer-PT-a032-ReachabilityFireability-15

=== Now, execution of the tool begins

BK_START 1678592235639

bash -c /home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n "BK_STOP " ; date -u +%s%3N
Invoking MCC driver with
BK_TOOL=marciexred
BK_EXAMINATION=ReachabilityFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=FunctionPointer-PT-a032
Applying reductions before tool marcie
Invoking reducer
Running Version 202303021504
[2023-03-12 03:37:17] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityFireability, -timeout, 360, -rebuildPNML]
[2023-03-12 03:37:17] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-12 03:37:17] [INFO ] Load time of PNML (sax parser for PT used): 34 ms
[2023-03-12 03:37:17] [INFO ] Transformed 40 places.
[2023-03-12 03:37:17] [INFO ] Transformed 70 transitions.
[2023-03-12 03:37:17] [INFO ] Parsed PT model containing 40 places and 70 transitions and 284 arcs in 92 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 13 ms.
Working with output stream class java.io.PrintStream
Deduced a syphon composed of 6 places in 1 ms
Reduce places removed 6 places and 4 transitions.
FORMULA FunctionPointer-PT-a032-ReachabilityFireability-01 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FunctionPointer-PT-a032-ReachabilityFireability-06 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FunctionPointer-PT-a032-ReachabilityFireability-07 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FunctionPointer-PT-a032-ReachabilityFireability-08 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FunctionPointer-PT-a032-ReachabilityFireability-10 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA FunctionPointer-PT-a032-ReachabilityFireability-14 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Incomplete random walk after 10000 steps, including 30 resets, run finished after 288 ms. (steps per millisecond=34 ) properties (out of 10) seen :4
FORMULA FunctionPointer-PT-a032-ReachabilityFireability-15 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA FunctionPointer-PT-a032-ReachabilityFireability-05 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA FunctionPointer-PT-a032-ReachabilityFireability-04 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA FunctionPointer-PT-a032-ReachabilityFireability-02 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 139 ms. (steps per millisecond=71 ) properties (out of 6) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 81 ms. (steps per millisecond=123 ) properties (out of 6) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 44 ms. (steps per millisecond=227 ) properties (out of 6) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 107 ms. (steps per millisecond=93 ) properties (out of 6) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 77 ms. (steps per millisecond=129 ) properties (out of 6) seen :0
Incomplete Best-First random walk after 10000 steps, including 2 resets, run finished after 56 ms. (steps per millisecond=178 ) properties (out of 6) seen :0
Running SMT prover for 6 properties.
[2023-03-12 03:37:18] [INFO ] Flow matrix only has 46 transitions (discarded 20 similar events)
// Phase 1: matrix 46 rows 34 cols
[2023-03-12 03:37:18] [INFO ] Computed 4 place invariants in 3 ms
[2023-03-12 03:37:18] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2023-03-12 03:37:18] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2023-03-12 03:37:18] [INFO ] After 177ms SMT Verify possible using all constraints in real domain returned unsat :1 sat :0 real:5
[2023-03-12 03:37:18] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2023-03-12 03:37:18] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 0 ms returned sat
[2023-03-12 03:37:18] [INFO ] After 31ms SMT Verify possible using state equation in natural domain returned unsat :5 sat :1
[2023-03-12 03:37:18] [INFO ] State equation strengthened by 8 read => feed constraints.
[2023-03-12 03:37:18] [INFO ] After 15ms SMT Verify possible using 8 Read/Feed constraints in natural domain returned unsat :5 sat :1
[2023-03-12 03:37:18] [INFO ] After 37ms SMT Verify possible using trap constraints in natural domain returned unsat :5 sat :1
Attempting to minimize the solution found.
Minimization took 177 ms.
[2023-03-12 03:37:18] [INFO ] After 315ms SMT Verify possible using all constraints in natural domain returned unsat :5 sat :1
FORMULA FunctionPointer-PT-a032-ReachabilityFireability-13 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA FunctionPointer-PT-a032-ReachabilityFireability-12 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA FunctionPointer-PT-a032-ReachabilityFireability-11 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA FunctionPointer-PT-a032-ReachabilityFireability-09 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA FunctionPointer-PT-a032-ReachabilityFireability-03 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Fused 6 Parikh solutions to 1 different solutions.
Parikh walk visited 0 properties in 2 ms.
Support contains 25 out of 34 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 34/34 places, 66/66 transitions.
Graph (complete) has 118 edges and 34 vertex of which 31 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.1 ms
Discarding 3 places :
Also discarding 0 output transitions
Drop transitions removed 2 transitions
Redundant transition composition rules discarded 2 transitions
Iterating global reduction 0 with 2 rules applied. Total rules applied 3 place count 31 transition count 64
Applied a total of 3 rules in 16 ms. Remains 31 /34 variables (removed 3) and now considering 64/66 (removed 2) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 16 ms. Remains : 31/34 places, 64/66 transitions.
Incomplete random walk after 10000 steps, including 20 resets, run finished after 35 ms. (steps per millisecond=285 ) properties (out of 1) seen :0
Incomplete Best-First random walk after 10000 steps, including 2 resets, run finished after 20 ms. (steps per millisecond=500 ) properties (out of 1) seen :0
Interrupted probabilistic random walk after 2404692 steps, run timeout after 3001 ms. (steps per millisecond=801 ) properties seen :{}
Probabilistic random walk after 2404692 steps, saw 1634931 distinct states, run finished after 3002 ms. (steps per millisecond=801 ) properties seen :0
Running SMT prover for 1 properties.
[2023-03-12 03:37:21] [INFO ] Flow matrix only has 45 transitions (discarded 19 similar events)
// Phase 1: matrix 45 rows 31 cols
[2023-03-12 03:37:21] [INFO ] Computed 2 place invariants in 4 ms
[2023-03-12 03:37:21] [INFO ] [Real]Absence check using 1 positive place invariants in 0 ms returned sat
[2023-03-12 03:37:21] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2023-03-12 03:37:21] [INFO ] After 77ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
[2023-03-12 03:37:22] [INFO ] [Nat]Absence check using 1 positive place invariants in 6 ms returned sat
[2023-03-12 03:37:22] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2023-03-12 03:37:22] [INFO ] After 33ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2023-03-12 03:37:22] [INFO ] State equation strengthened by 8 read => feed constraints.
[2023-03-12 03:37:22] [INFO ] After 22ms SMT Verify possible using 8 Read/Feed constraints in natural domain returned unsat :0 sat :1
[2023-03-12 03:37:22] [INFO ] After 37ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
Attempting to minimize the solution found.
Minimization took 15 ms.
[2023-03-12 03:37:22] [INFO ] After 124ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
Parikh walk visited 0 properties in 3 ms.
Support contains 25 out of 31 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 31/31 places, 64/64 transitions.
Applied a total of 0 rules in 3 ms. Remains 31 /31 variables (removed 0) and now considering 64/64 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 31/31 places, 64/64 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 31/31 places, 64/64 transitions.
Applied a total of 0 rules in 2 ms. Remains 31 /31 variables (removed 0) and now considering 64/64 (removed 0) transitions.
[2023-03-12 03:37:22] [INFO ] Flow matrix only has 45 transitions (discarded 19 similar events)
[2023-03-12 03:37:22] [INFO ] Invariant cache hit.
[2023-03-12 03:37:22] [INFO ] Implicit Places using invariants in 62 ms returned []
[2023-03-12 03:37:22] [INFO ] Flow matrix only has 45 transitions (discarded 19 similar events)
[2023-03-12 03:37:22] [INFO ] Invariant cache hit.
[2023-03-12 03:37:22] [INFO ] State equation strengthened by 8 read => feed constraints.
[2023-03-12 03:37:22] [INFO ] Implicit Places using invariants and state equation in 50 ms returned []
Implicit Place search using SMT with State Equation took 114 ms to find 0 implicit places.
[2023-03-12 03:37:22] [INFO ] Redundant transitions in 0 ms returned []
[2023-03-12 03:37:22] [INFO ] Flow matrix only has 45 transitions (discarded 19 similar events)
[2023-03-12 03:37:22] [INFO ] Invariant cache hit.
[2023-03-12 03:37:22] [INFO ] Dead Transitions using invariants and state equation in 71 ms found 0 transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 195 ms. Remains : 31/31 places, 64/64 transitions.
Ensure Unique test removed 19 transitions
Reduce isomorphic transitions removed 19 transitions.
Iterating post reduction 0 with 19 rules applied. Total rules applied 19 place count 31 transition count 45
Applied a total of 19 rules in 4 ms. Remains 31 /31 variables (removed 0) and now considering 45/64 (removed 19) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 45 rows 31 cols
[2023-03-12 03:37:22] [INFO ] Computed 2 place invariants in 2 ms
[2023-03-12 03:37:22] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2023-03-12 03:37:22] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2023-03-12 03:37:22] [INFO ] After 51ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
[2023-03-12 03:37:22] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2023-03-12 03:37:22] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2023-03-12 03:37:22] [INFO ] After 30ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2023-03-12 03:37:22] [INFO ] After 54ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
Attempting to minimize the solution found.
Minimization took 17 ms.
[2023-03-12 03:37:22] [INFO ] After 109ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2023-03-12 03:37:22] [INFO ] Export to MCC of 1 properties in file /home/mcc/execution/ReachabilityFireability.sr.xml took 6 ms.
[2023-03-12 03:37:22] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 31 places, 64 transitions and 256 arcs took 2 ms.
[2023-03-12 03:37:22] [INFO ] Flatten gal took : 32 ms
Total runtime 5406 ms.
There are residual formulas that ITS could not solve within timeout
timeout --kill-after=10s --signal=SIGINT 1m for testing only

Marcie built on Linux at 2019-11-18.
A model checker for Generalized Stochastic Petri nets

authors: Alex Tovchigrechko (IDD package and CTL model checking)

Martin Schwarick (Symbolic numerical analysis and CSL model checking)

Christian Rohr (Simulative and approximative numerical model checking)

marcie@informatik.tu-cottbus.de

called as: /home/mcc/BenchKit/bin//../reducer/bin//../../marcie/bin/marcie --net-file=model.pnml --mcc-file=ReachabilityFireability.xml --memory=6 --mcc-mode

parse successfull
net created successfully

Net: FuncPointer_1
(NrP: 31 NrTr: 64 NrArc: 256)

parse formulas
formulas created successfully
place and transition orderings generation:0m 0.000sec

net check time: 0m 0.000sec

init dd package: 0m 2.896sec


BK_STOP 1678592661519

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

+ 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//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202303021504.jar
+ VERSION=202303021504
+ echo 'Running Version 202303021504'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination ReachabilityFireability -timeout 360 -rebuildPNML
check for maximal unmarked siphon
ok
check for constant places
ok
check if there are places and transitions
ok
check if there are transitions without pre-places
ok
check if at least one transition is enabled in m0
ok
check if there are transitions that can never fire
ok


initing FirstDep: 0m 0.000sec

/home/mcc/BenchKit/bin//../reducer/bin//../../marcie/bin//../BenchKit_head.sh: line 16: 490 Killed ${MARCIE} --net-file=model.pnml --mcc-file=${BK_EXAMINATION}.xml ${MARCIE_CONFIG}

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="FunctionPointer-PT-a032"
export BK_EXAMINATION="ReachabilityFireability"
export BK_TOOL="marciexred"
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 2-5348"
echo " Executing tool marciexred"
echo " Input is FunctionPointer-PT-a032, 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 r170-tall-167838857500639"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/FunctionPointer-PT-a032.tgz
mv FunctionPointer-PT-a032 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 ;