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.r357-smll-167891806900686.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 itstools
Input is SharedMemory-PT-000050, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r357-smll-167891806900686
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 41M
-rw-r--r-- 1 mcc users 685K Feb 25 16:20 CTLCardinality.txt
-rw-r--r-- 1 mcc users 2.6M Feb 25 16:20 CTLCardinality.xml
-rw-r--r-- 1 mcc users 1.6M Feb 25 15:28 CTLFireability.txt
-rw-r--r-- 1 mcc users 6.1M Feb 25 15:27 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:41 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.5K Jan 29 11:41 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 665K Feb 25 16:53 LTLCardinality.txt
-rw-r--r-- 1 mcc users 1.8M Feb 25 16:53 LTLCardinality.xml
-rw-r--r-- 1 mcc users 480K Feb 25 16:53 LTLFireability.txt
-rw-r--r-- 1 mcc users 1.4M Feb 25 16:53 LTLFireability.xml
-rw-r--r-- 1 mcc users 1.5M Feb 25 18:10 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 5.7M Feb 25 18:10 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 3.3M Feb 25 17:32 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 13M Feb 25 17:32 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 5.9K Feb 25 16:53 UpperBounds.txt
-rw-r--r-- 1 mcc users 15K Feb 25 16:53 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 5 18:23 equiv_col
-rw-r--r-- 1 mcc users 7 Mar 5 18:23 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 iscolored
-rw-r--r-- 1 mcc users 2.6M Mar 5 18:23 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 SharedMemory-PT-000050-ReachabilityCardinality-00
FORMULA_NAME SharedMemory-PT-000050-ReachabilityCardinality-01
FORMULA_NAME SharedMemory-PT-000050-ReachabilityCardinality-02
FORMULA_NAME SharedMemory-PT-000050-ReachabilityCardinality-03
FORMULA_NAME SharedMemory-PT-000050-ReachabilityCardinality-04
FORMULA_NAME SharedMemory-PT-000050-ReachabilityCardinality-05
FORMULA_NAME SharedMemory-PT-000050-ReachabilityCardinality-06
FORMULA_NAME SharedMemory-PT-000050-ReachabilityCardinality-07
FORMULA_NAME SharedMemory-PT-000050-ReachabilityCardinality-08
FORMULA_NAME SharedMemory-PT-000050-ReachabilityCardinality-09
FORMULA_NAME SharedMemory-PT-000050-ReachabilityCardinality-10
FORMULA_NAME SharedMemory-PT-000050-ReachabilityCardinality-11
FORMULA_NAME SharedMemory-PT-000050-ReachabilityCardinality-12
FORMULA_NAME SharedMemory-PT-000050-ReachabilityCardinality-13
FORMULA_NAME SharedMemory-PT-000050-ReachabilityCardinality-14
FORMULA_NAME SharedMemory-PT-000050-ReachabilityCardinality-15

=== Now, execution of the tool begins

BK_START 1679378285088

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=itstools
BK_EXAMINATION=ReachabilityCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=SharedMemory-PT-000050
Not applying reductions.
Model is PT
ReachabilityCardinality PT
Running Version 202303021504
[2023-03-21 05:58:08] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityCardinality, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2023-03-21 05:58:08] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-21 05:58:09] [INFO ] Load time of PNML (sax parser for PT used): 518 ms
[2023-03-21 05:58:09] [INFO ] Transformed 2651 places.
[2023-03-21 05:58:09] [INFO ] Transformed 5050 transitions.
[2023-03-21 05:58:09] [INFO ] Found NUPN structural information;
[2023-03-21 05:58:09] [INFO ] Completing missing partition info from NUPN : creating a component with [Ext_Mem_Acc_8_2, Ext_Mem_Acc_7_2, Ext_Mem_Acc_20_3, Ext_Mem_Acc_19_3, Ext_Mem_Acc_24_4, Ext_Mem_Acc_15_4, Ext_Mem_Acc_13_5, Ext_Mem_Acc_14_5, Ext_Mem_Acc_17_6, Ext_Mem_Acc_14_6, Ext_Mem_Acc_2_8, Ext_Mem_Acc_1_8, Ext_Mem_Acc_16_9, Ext_Mem_Acc_21_9, Ext_Mem_Acc_26_9, Ext_Mem_Acc_25_9, Ext_Mem_Acc_6_11, Ext_Mem_Acc_7_11, Ext_Mem_Acc_27_11, Ext_Mem_Acc_28_11, Ext_Mem_Acc_40_13, Ext_Mem_Acc_39_13, Ext_Mem_Acc_39_14, Ext_Mem_Acc_38_14, Ext_Mem_Acc_20_14, Ext_Mem_Acc_21_14, Ext_Mem_Acc_43_15, Ext_Mem_Acc_44_15, Ext_Mem_Acc_49_16, Ext_Mem_Acc_48_16, Ext_Mem_Acc_40_18, Ext_Mem_Acc_41_18, Ext_Mem_Acc_13_20, Ext_Mem_Acc_14_20, Ext_Mem_Acc_37_21, Ext_Mem_Acc_38_21, Ext_Mem_Acc_41_20, Ext_Mem_Acc_40_20, Ext_Mem_Acc_45_23, Ext_Mem_Acc_46_23, Ext_Mem_Acc_16_22, Ext_Mem_Acc_15_22, Ext_Mem_Acc_11_26, Ext_Mem_Acc_12_26, Ext_Mem_Acc_31_24, Ext_Mem_Acc_30_24, Ext_Mem_Acc_31_25, Ext_Mem_Acc_32_25, Ext_Mem_Acc_21_29, Ext_Mem_Acc_20_29, Ext_Mem_Acc_13_28, Ext_Mem_Acc_16_28, Ext_Mem_Acc_15_31, Ext_Mem_Acc_14_31, Ext_Mem_Acc_16_30, Ext_Mem_Acc_13_30, Ext_Mem_Acc_24_34, Ext_Mem_Acc_21_34, Ext_Mem_Acc_9_34, Ext_Mem_Acc_12_34, Ext_Mem_Acc_20_32, Ext_Mem_Acc_21_32, Ext_Mem_Acc_25_37, Ext_Mem_Acc_22_37, Ext_Mem_Acc_2_36, Ext_Mem_Acc_49_35, Ext_Mem_Acc_6_40, Ext_Mem_Acc_5_40, Ext_Mem_Acc_42_38, Ext_Mem_Acc_43_38, Ext_Mem_Acc_44_37, Ext_Mem_Acc_43_37, Ext_Mem_Acc_38_41, Ext_Mem_Acc_39_41, Ext_Mem_Acc_43_40, Ext_Mem_Acc_42_40, Ext_Mem_Acc_36_45, Ext_Mem_Acc_37_45, Ext_Mem_Acc_6_46, Ext_Mem_Acc_5_46, Ext_Mem_Acc_29_47, Ext_Mem_Acc_28_47, Ext_Mem_Acc_41_43, Ext_Mem_Acc_40_43, Ext_Mem_Acc_17_44, Ext_Mem_Acc_18_44, Ext_Mem_Acc_34_50, Ext_Mem_Acc_33_50, Ext_Mem_Acc_44_48, Ext_Mem_Acc_45_48, Ext_Mem_Acc_2_50, Ext_Mem_Acc_3_50]
[2023-03-21 05:58:09] [INFO ] Parsed PT model containing 2651 places and 5050 transitions and 20000 arcs in 737 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityCardinality.xml in 963 ms.
Working with output stream class java.io.PrintStream
FORMULA SharedMemory-PT-000050-ReachabilityCardinality-02 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA SharedMemory-PT-000050-ReachabilityCardinality-07 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA SharedMemory-PT-000050-ReachabilityCardinality-08 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2023-03-21 05:58:11] [INFO ] Flatten gal took : 740 ms
[2023-03-21 05:58:12] [INFO ] Flatten gal took : 388 ms
[2023-03-21 05:58:12] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality5283831927529830459.gal : 225 ms
[2023-03-21 05:58:12] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality7984073440205927169.prop : 77 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202303021504/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality5283831927529830459.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality7984073440205927169.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202303021504/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...328
Loading property file /tmp/ReachabilityCardinality7984073440205927169.prop.
Incomplete random walk after 10000 steps, including 2 resets, run finished after 6091 ms. (steps per millisecond=1 ) properties (out of 13) seen :4
FORMULA SharedMemory-PT-000050-ReachabilityCardinality-11 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SharedMemory-PT-000050-ReachabilityCardinality-09 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SharedMemory-PT-000050-ReachabilityCardinality-05 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SharedMemory-PT-000050-ReachabilityCardinality-04 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 69 ms. (steps per millisecond=144 ) properties (out of 9) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 3003 ms. (steps per millisecond=3 ) properties (out of 9) seen :1
FORMULA SharedMemory-PT-000050-ReachabilityCardinality-01 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
Interrupted Best-First random walk after 6840 steps, including 1 resets, run timeout after 5112 ms. (steps per millisecond=1 ) properties seen 0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 54 ms. (steps per millisecond=185 ) properties (out of 8) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 39 ms. (steps per millisecond=256 ) properties (out of 8) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 43 ms. (steps per millisecond=232 ) properties (out of 8) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 38 ms. (steps per millisecond=263 ) 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 48 ms. (steps per millisecond=208 ) properties (out of 8) seen :0
Running SMT prover for 8 properties.
// Phase 1: matrix 5050 rows 2651 cols
[2023-03-21 05:58:25] [INFO ] Computed 101 place invariants in 384 ms
[2023-03-21 05:58:34] [INFO ] After 1640ms SMT Verify possible using all constraints in real domain returned unsat :1 sat :0 real:7
[2023-03-21 05:58:35] [INFO ] [Nat]Absence check using 101 positive place invariants in 119 ms returned sat
[2023-03-21 05:58:38] [INFO ] After 2858ms SMT Verify possible using state equation in natural domain returned unsat :6 sat :2
[2023-03-21 05:58:39] [INFO ] After 3512ms SMT Verify possible using trap constraints in natural domain returned unsat :6 sat :2
Attempting to minimize the solution found.
Minimization took 347 ms.
[2023-03-21 05:58:39] [INFO ] After 5416ms SMT Verify possible using all constraints in natural domain returned unsat :6 sat :2
FORMULA SharedMemory-PT-000050-ReachabilityCardinality-15 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA SharedMemory-PT-000050-ReachabilityCardinality-14 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA SharedMemory-PT-000050-ReachabilityCardinality-12 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA SharedMemory-PT-000050-ReachabilityCardinality-06 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA SharedMemory-PT-000050-ReachabilityCardinality-03 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA SharedMemory-PT-000050-ReachabilityCardinality-00 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Fused 8 Parikh solutions to 2 different solutions.
FORMULA SharedMemory-PT-000050-ReachabilityCardinality-10 TRUE TECHNIQUES TOPOLOGICAL PARIKH_WALK
Finished Parikh walk after 22 steps, including 0 resets, run visited all 1 properties in 2 ms. (steps per millisecond=11 )
FORMULA SharedMemory-PT-000050-ReachabilityCardinality-13 FALSE TECHNIQUES TOPOLOGICAL PARIKH_WALK
Parikh walk visited 2 properties in 13 ms.
ITS runner failed with exception null
java.lang.InterruptedException
at java.base/java.lang.Object.wait(Native Method)
at java.base/java.lang.Thread.join(Thread.java:1304)
at java.base/java.lang.Thread.join(Thread.java:1372)
at fr.lip6.move.gal.application.runner.AbstractRunner.join(AbstractRunner.java:27)
at fr.lip6.move.gal.application.runner.its.ITSRunner.join(ITSRunner.java:177)
at fr.lip6.move.gal.application.solver.global.GlobalPropertySolver.verifyWithSDD(GlobalPropertySolver.java:675)
at fr.lip6.move.gal.application.solver.ReachabilitySolver.lambda$2(ReachabilitySolver.java:63)
at java.base/java.lang.Thread.run(Thread.java:833)
All properties solved without resorting to model-checking.
Total runtime 31108 ms.

BK_STOP 1679378320963

--------------------
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
+ [[ ReachabilityCardinality = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution ReachabilityCardinality -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
+ 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//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202303021504.jar
+ VERSION=202303021504
+ echo 'Running Version 202303021504'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination ReachabilityCardinality -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="SharedMemory-PT-000050"
export BK_EXAMINATION="ReachabilityCardinality"
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 2-5348"
echo " Executing tool itstools"
echo " Input is SharedMemory-PT-000050, 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 r357-smll-167891806900686"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/SharedMemory-PT-000050.tgz
mv SharedMemory-PT-000050 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 ;