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.r523-tall-167987247700182.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 smartxred
Input is CryptoMiner-PT-D05N100, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r523-tall-167987247700182
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 708K
-rw-r--r-- 1 mcc users 11K Mar 23 15:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 82K Mar 23 15:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 7.2K Mar 23 15:20 CTLFireability.txt
-rw-r--r-- 1 mcc users 52K Mar 23 15:20 CTLFireability.xml
-rw-r--r-- 1 mcc users 6.7K Mar 23 07:06 LTLCardinality.txt
-rw-r--r-- 1 mcc users 33K Mar 23 07:06 LTLCardinality.xml
-rw-r--r-- 1 mcc users 3.2K Mar 23 07:06 LTLFireability.txt
-rw-r--r-- 1 mcc users 20K Mar 23 07:06 LTLFireability.xml
-rw-r--r-- 1 mcc users 1 Mar 26 22:42 NewModel
-rw-r--r-- 1 mcc users 38K Mar 23 15:23 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 277K Mar 23 15:23 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 16K Mar 23 15:23 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 109K Mar 23 15:23 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 2.3K Mar 23 07:06 UpperBounds.txt
-rw-r--r-- 1 mcc users 5.2K Mar 23 07:06 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 26 22:42 equiv_col
-rw-r--r-- 1 mcc users 8 Mar 26 22:42 instance
-rw-r--r-- 1 mcc users 6 Mar 26 22:42 iscolored
-rw-r--r-- 1 mcc users 7.8K Mar 31 16:48 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 CryptoMiner-PT-D05N100-ReachabilityCardinality-00
FORMULA_NAME CryptoMiner-PT-D05N100-ReachabilityCardinality-01
FORMULA_NAME CryptoMiner-PT-D05N100-ReachabilityCardinality-02
FORMULA_NAME CryptoMiner-PT-D05N100-ReachabilityCardinality-03
FORMULA_NAME CryptoMiner-PT-D05N100-ReachabilityCardinality-04
FORMULA_NAME CryptoMiner-PT-D05N100-ReachabilityCardinality-05
FORMULA_NAME CryptoMiner-PT-D05N100-ReachabilityCardinality-06
FORMULA_NAME CryptoMiner-PT-D05N100-ReachabilityCardinality-07
FORMULA_NAME CryptoMiner-PT-D05N100-ReachabilityCardinality-08
FORMULA_NAME CryptoMiner-PT-D05N100-ReachabilityCardinality-09
FORMULA_NAME CryptoMiner-PT-D05N100-ReachabilityCardinality-10
FORMULA_NAME CryptoMiner-PT-D05N100-ReachabilityCardinality-11
FORMULA_NAME CryptoMiner-PT-D05N100-ReachabilityCardinality-12
FORMULA_NAME CryptoMiner-PT-D05N100-ReachabilityCardinality-13
FORMULA_NAME CryptoMiner-PT-D05N100-ReachabilityCardinality-14
FORMULA_NAME CryptoMiner-PT-D05N100-ReachabilityCardinality-15

=== Now, execution of the tool begins

BK_START 1680834357346

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=smartxred
BK_EXAMINATION=ReachabilityCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=CryptoMiner-PT-D05N100
Applying reductions before tool smart
Invoking reducer
Running Version 202304061127
[2023-04-07 02:25:59] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityCardinality, -timeout, 360, -rebuildPNML]
[2023-04-07 02:25:59] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-04-07 02:25:59] [INFO ] Load time of PNML (sax parser for PT used): 24 ms
[2023-04-07 02:25:59] [INFO ] Transformed 18 places.
[2023-04-07 02:25:59] [INFO ] Transformed 18 transitions.
[2023-04-07 02:25:59] [INFO ] Parsed PT model containing 18 places and 18 transitions and 52 arcs in 89 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityCardinality.xml in 27 ms.
Working with output stream class java.io.PrintStream
FORMULA CryptoMiner-PT-D05N100-ReachabilityCardinality-00 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Incomplete random walk after 10019 steps, including 2 resets, run finished after 38 ms. (steps per millisecond=263 ) properties (out of 15) seen :5
FORMULA CryptoMiner-PT-D05N100-ReachabilityCardinality-15 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA CryptoMiner-PT-D05N100-ReachabilityCardinality-14 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA CryptoMiner-PT-D05N100-ReachabilityCardinality-11 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA CryptoMiner-PT-D05N100-ReachabilityCardinality-10 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA CryptoMiner-PT-D05N100-ReachabilityCardinality-09 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 10000 steps, including 2 resets, run finished after 149 ms. (steps per millisecond=67 ) properties (out of 10) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 57 ms. (steps per millisecond=175 ) properties (out of 10) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 74 ms. (steps per millisecond=135 ) properties (out of 10) seen :1
FORMULA CryptoMiner-PT-D05N100-ReachabilityCardinality-03 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 89 ms. (steps per millisecond=112 ) properties (out of 9) seen :1
FORMULA CryptoMiner-PT-D05N100-ReachabilityCardinality-04 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
Incomplete Best-First random walk after 10000 steps, including 2 resets, run finished after 61 ms. (steps per millisecond=163 ) properties (out of 8) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 27 ms. (steps per millisecond=370 ) properties (out of 8) 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 8) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 82 ms. (steps per millisecond=121 ) properties (out of 8) seen :0
Incomplete Best-First random walk after 10000 steps, including 2 resets, run finished after 76 ms. (steps per millisecond=131 ) properties (out of 8) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 40 ms. (steps per millisecond=250 ) properties (out of 8) seen :0
Running SMT prover for 8 properties.
// Phase 1: matrix 18 rows 18 cols
[2023-04-07 02:26:00] [INFO ] Computed 1 invariants in 5 ms
[2023-04-07 02:26:00] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2023-04-07 02:26:00] [INFO ] After 200ms SMT Verify possible using all constraints in real domain returned unsat :5 sat :0 real:3
[2023-04-07 02:26:00] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2023-04-07 02:26:00] [INFO ] After 22ms SMT Verify possible using state equation in natural domain returned unsat :7 sat :1
[2023-04-07 02:26:00] [INFO ] State equation strengthened by 5 read => feed constraints.
[2023-04-07 02:26:00] [INFO ] After 6ms SMT Verify possible using 5 Read/Feed constraints in natural domain returned unsat :7 sat :1
[2023-04-07 02:26:00] [INFO ] After 17ms SMT Verify possible using trap constraints in natural domain returned unsat :7 sat :1
Attempting to minimize the solution found.
Minimization took 11 ms.
[2023-04-07 02:26:00] [INFO ] After 136ms SMT Verify possible using all constraints in natural domain returned unsat :7 sat :1
FORMULA CryptoMiner-PT-D05N100-ReachabilityCardinality-13 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA CryptoMiner-PT-D05N100-ReachabilityCardinality-12 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA CryptoMiner-PT-D05N100-ReachabilityCardinality-07 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA CryptoMiner-PT-D05N100-ReachabilityCardinality-06 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA CryptoMiner-PT-D05N100-ReachabilityCardinality-05 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA CryptoMiner-PT-D05N100-ReachabilityCardinality-02 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA CryptoMiner-PT-D05N100-ReachabilityCardinality-01 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Fused 8 Parikh solutions to 1 different solutions.
Parikh walk visited 0 properties in 3 ms.
Support contains 12 out of 18 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 18/18 places, 18/18 transitions.
Applied a total of 0 rules in 9 ms. Remains 18 /18 variables (removed 0) and now considering 18/18 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 9 ms. Remains : 18/18 places, 18/18 transitions.
Incomplete random walk after 10019 steps, including 2 resets, run finished after 2 ms. (steps per millisecond=5009 ) properties (out of 1) seen :0
Incomplete Best-First random walk after 10000 steps, including 2 resets, run finished after 16 ms. (steps per millisecond=625 ) properties (out of 1) seen :0
Interrupted probabilistic random walk after 2874423 steps, run timeout after 3001 ms. (steps per millisecond=957 ) properties seen :{}
Probabilistic random walk after 2874423 steps, saw 1114135 distinct states, run finished after 3003 ms. (steps per millisecond=957 ) properties seen :0
Running SMT prover for 1 properties.
[2023-04-07 02:26:03] [INFO ] Invariant cache hit.
[2023-04-07 02:26:03] [INFO ] After 26ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
[2023-04-07 02:26:03] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2023-04-07 02:26:03] [INFO ] After 11ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2023-04-07 02:26:03] [INFO ] State equation strengthened by 5 read => feed constraints.
[2023-04-07 02:26:03] [INFO ] After 6ms SMT Verify possible using 5 Read/Feed constraints in natural domain returned unsat :0 sat :1
[2023-04-07 02:26:03] [INFO ] After 13ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
Attempting to minimize the solution found.
Minimization took 8 ms.
[2023-04-07 02:26:03] [INFO ] After 55ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
Parikh walk visited 0 properties in 2 ms.
Support contains 12 out of 18 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 18/18 places, 18/18 transitions.
Applied a total of 0 rules in 1 ms. Remains 18 /18 variables (removed 0) and now considering 18/18 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1 ms. Remains : 18/18 places, 18/18 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 18/18 places, 18/18 transitions.
Applied a total of 0 rules in 1 ms. Remains 18 /18 variables (removed 0) and now considering 18/18 (removed 0) transitions.
[2023-04-07 02:26:03] [INFO ] Invariant cache hit.
[2023-04-07 02:26:03] [INFO ] Implicit Places using invariants in 33 ms returned []
[2023-04-07 02:26:03] [INFO ] Invariant cache hit.
[2023-04-07 02:26:03] [INFO ] State equation strengthened by 5 read => feed constraints.
[2023-04-07 02:26:03] [INFO ] Implicit Places using invariants and state equation in 39 ms returned []
Implicit Place search using SMT with State Equation took 75 ms to find 0 implicit places.
[2023-04-07 02:26:03] [INFO ] Redundant transitions in 1 ms returned []
[2023-04-07 02:26:03] [INFO ] Invariant cache hit.
[2023-04-07 02:26:03] [INFO ] Dead Transitions using invariants and state equation in 24 ms found 0 transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 106 ms. Remains : 18/18 places, 18/18 transitions.
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 0 with 1 Pre rules applied. Total rules applied 0 place count 18 transition count 17
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 0 with 2 rules applied. Total rules applied 2 place count 17 transition count 17
Applied a total of 2 rules in 4 ms. Remains 17 /18 variables (removed 1) and now considering 17/18 (removed 1) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 17 rows 17 cols
[2023-04-07 02:26:03] [INFO ] Computed 1 invariants in 1 ms
[2023-04-07 02:26:03] [INFO ] After 16ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
[2023-04-07 02:26:03] [INFO ] [Nat]Absence check using 1 positive place invariants in 8 ms returned sat
[2023-04-07 02:26:03] [INFO ] After 13ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2023-04-07 02:26:03] [INFO ] After 25ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
Attempting to minimize the solution found.
Minimization took 8 ms.
[2023-04-07 02:26:03] [INFO ] After 80ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2023-04-07 02:26:03] [INFO ] Export to MCC of 1 properties in file /home/mcc/execution/ReachabilityCardinality.sr.xml took 2 ms.
[2023-04-07 02:26:03] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 18 places, 18 transitions and 52 arcs took 0 ms.
[2023-04-07 02:26:03] [INFO ] Flatten gal took : 17 ms
Total runtime 4810 ms.
There are residual formulas that ITS could not solve within timeout
======================================================
========== this is Smart for the MCC'2018 ============
======================================================
Running CryptoMiner (PT), instance D05N100
Examination ReachabilityCardinality
Parser /home/mcc/BenchKit/bin//../reducer/bin//../../smart/bin//parser/Cardinality.jar
Model checker /home/mcc/BenchKit/bin//../reducer/bin//../../smart/bin//rem_exec//smart

GOT IT HERE. BS
Petri model created: 18 places, 18 transitions, 52 arcs.
Final Score: 52.097
Took : 0 seconds
Reachability Cardinality file is: ReachabilityCardinality.xml
READY TO PARSE. BS
PROPERTY: CryptoMiner-PT-D05N100-ReachabilityCardinality-08 (reachable &!potential( ( ( (tk(P12)) <= (tk(P1)) ) | ( ( ( 24 ) <= (tk(P10)) ) | ( ( (! ( (tk(P6)) <= ( 85 ) )) | ( (! ( (tk(P5)) <= (tk(P15)) )) | ( ( (! ( ( 12 ) <= (tk(P9)) )) & (! ( ( 20 ) <= (tk(P6)) )) ) & ( (! ( ( 61 ) <= (tk(P16)) )) & ( ( (tk(P16)) <= ( 22 ) ) | ( ( (tk(P9)) <= ( 1 ) ) | ( ( (tk(P18)) <= ( 95 ) ) & ( ( 54 ) <= (tk(P2)) ) ) ) ) ) ) ) ) & ( ( ( ( 61 ) <= (tk(P10)) ) | ( ( (tk(P18)) <= (tk(P12)) ) & (! ( (tk(P18)) <= ( 51 ) )) ) ) & ( ( (tk(P3)) <= ( 30 ) ) | ( ( (! ( (tk(P6)) <= (tk(P5)) )) & ( (! ( ( 75 ) <= (tk(P7)) )) & ( (! ( ( 83 ) <= (tk(P16)) )) | (! ( (tk(P1)) <= (tk(P15)) )) ) ) ) | ( ( (! ( (tk(P15)) <= (tk(P18)) )) & (! ( (tk(P2)) <= ( 0 ) )) ) & ( ( (! ( (tk(P16)) <= (tk(P15)) )) | (! ( (tk(P7)) <= ( 41 ) )) ) & ( ( (tk(P7)) <= (tk(P15)) ) | ( (! ( ( 17 ) <= (tk(P2)) )) & (! ( ( 6 ) <= (tk(P18)) )) ) ) ) ) ) ) ) ) ) )))
FORMULA CryptoMiner-PT-D05N100-ReachabilityCardinality-08 FALSE TECHNIQUES SEQUENTIAL_PROCESSING DECISION_DIAGRAMS

BK_STOP 1680834366193

--------------------
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_1.0.0.202304061127.jar
+ VERSION=202304061127
+ echo 'Running Version 202304061127'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination ReachabilityCardinality -timeout 360 -rebuildPNML

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="CryptoMiner-PT-D05N100"
export BK_EXAMINATION="ReachabilityCardinality"
export BK_TOOL="smartxred"
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 smartxred"
echo " Input is CryptoMiner-PT-D05N100, 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 r523-tall-167987247700182"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/CryptoMiner-PT-D05N100.tgz
mv CryptoMiner-PT-D05N100 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 ;