fond
Model Checking Contest 2022
12th edition, Bergen, Norway, June 21, 2022
Execution of r021-tall-165251914000268
Last Updated
Jun 22, 2022

About the Execution of Tapaal for BridgeAndVehicles-PT-V50P50N50

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
904.163 3592772.00 6057373.00 8073.40 F??FFFTTFFFFFFFF normal

Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2022-input.r021-tall-165251914000268.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2022-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 tapaal
Input is BridgeAndVehicles-PT-V50P50N50, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r021-tall-165251914000268
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 8.4M
-rw-r--r-- 1 mcc users 16K Apr 29 23:01 CTLCardinality.txt
-rw-r--r-- 1 mcc users 93K Apr 29 23:01 CTLCardinality.xml
-rw-r--r-- 1 mcc users 537K Apr 29 22:57 CTLFireability.txt
-rw-r--r-- 1 mcc users 2.0M Apr 29 22:57 CTLFireability.xml
-rw-r--r-- 1 mcc users 5 May 10 09:33 equiv_col
-rw-r--r-- 1 mcc users 4.2K May 10 09:33 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.4K May 10 09:33 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 10 May 10 09:33 instance
-rw-r--r-- 1 mcc users 6 May 10 09:33 iscolored
-rw-r--r-- 1 mcc users 20K May 9 07:08 LTLCardinality.txt
-rw-r--r-- 1 mcc users 79K May 9 07:08 LTLCardinality.xml
-rw-r--r-- 1 mcc users 296K May 9 07:08 LTLFireability.txt
-rw-r--r-- 1 mcc users 843K May 9 07:08 LTLFireability.xml
-rw-r--r-- 1 mcc users 4.5M May 10 09:33 model.pnml
-rw-r--r-- 1 mcc users 2.8K May 9 07:08 UpperBounds.txt
-rw-r--r-- 1 mcc users 5.9K May 9 07:08 UpperBounds.xml

--------------------
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 BridgeAndVehicles-PT-V50P50N50-LTLFireability-00
FORMULA_NAME BridgeAndVehicles-PT-V50P50N50-LTLFireability-01
FORMULA_NAME BridgeAndVehicles-PT-V50P50N50-LTLFireability-02
FORMULA_NAME BridgeAndVehicles-PT-V50P50N50-LTLFireability-03
FORMULA_NAME BridgeAndVehicles-PT-V50P50N50-LTLFireability-04
FORMULA_NAME BridgeAndVehicles-PT-V50P50N50-LTLFireability-05
FORMULA_NAME BridgeAndVehicles-PT-V50P50N50-LTLFireability-06
FORMULA_NAME BridgeAndVehicles-PT-V50P50N50-LTLFireability-07
FORMULA_NAME BridgeAndVehicles-PT-V50P50N50-LTLFireability-08
FORMULA_NAME BridgeAndVehicles-PT-V50P50N50-LTLFireability-09
FORMULA_NAME BridgeAndVehicles-PT-V50P50N50-LTLFireability-10
FORMULA_NAME BridgeAndVehicles-PT-V50P50N50-LTLFireability-11
FORMULA_NAME BridgeAndVehicles-PT-V50P50N50-LTLFireability-12
FORMULA_NAME BridgeAndVehicles-PT-V50P50N50-LTLFireability-13
FORMULA_NAME BridgeAndVehicles-PT-V50P50N50-LTLFireability-14
FORMULA_NAME BridgeAndVehicles-PT-V50P50N50-LTLFireability-15

=== Now, execution of the tool begins

BK_START 1652581921680

tapaal
Got BK_BIN_PATH=/home/mcc/BenchKit/bin/
---> tapaal --- TAPAAL v5
Setting MODEL_PATH=.
Setting VERIFYPN=/home/mcc/BenchKit/bin/verifypn
Got BK_TIME_CONFINEMENT=3600
Setting TEMPDIR=/home/mcc/BenchKit/bin/tmp
Got BK_MEMORY_CONFINEMENT=16384
Limiting to 16265216 kB
Total timeout: 3590
Time left: 3590

*************************************
* TAPAAL verifying LTLFireability *
*************************************
TEMPDIR=/home/mcc/BenchKit/bin/tmp
QF=/home/mcc/BenchKit/bin/tmp/tmp.iZz8nSIa2I
MF=/home/mcc/BenchKit/bin/tmp/tmp.EDy1Nqro1C
Time left: 3590
---------------------------------------------------
Step -1: Stripping Colors
---------------------------------------------------
Verifying stripped models (16 in total)
/home/mcc/BenchKit/bin/verifypn -n -c -q 718 -ltl -l 29 -d 299 -z 4 -x 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 ./model.pnml ./LTLFireability.xml
CPN OverApproximation is only usable on colored models
Time left: 3590
---------------------------------------------------
Step 0: Parallel Simplification
---------------------------------------------------
Doing parallel simplification (16 in total)
Total simplification timout is 718 -- reduction timeout is 299
timeout 1017 /home/mcc/BenchKit/bin/verifypn -n -ltl -q 718 -l 29 -d 299 -z 4 -s OverApprox --binary-query-io 2 --write-simplified /home/mcc/BenchKit/bin/tmp/tmp.iZz8nSIa2I --write-reduced /home/mcc/BenchKit/bin/tmp/tmp.EDy1Nqro1C -x 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 ./model.pnml ./LTLFireability.xml
FORMULA BridgeAndVehicles-PT-V50P50N50-LTLFireability-05 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT LP_APPROX
Query index 5 was solved

Query is NOT satisfied.

FORMULA BridgeAndVehicles-PT-V50P50N50-LTLFireability-10 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT LP_APPROX
Query index 10 was solved

Query is NOT satisfied.

FORMULA BridgeAndVehicles-PT-V50P50N50-LTLFireability-13 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT LP_APPROX
Query index 13 was solved

Query is NOT satisfied.
Solution found by parallel simplification (step 0)
Solution found by parallel simplification (step 0)
Solution found by parallel simplification (step 0)
Time left: 3398

---------------------------------------------------
Step 1: Parallel processing
---------------------------------------------------
Doing parallel verification of individual queries (13 in total)
Each query is verified by 4 parallel strategies for 299 seconds
------------------- QUERY 1 ----------------------
Solution found by parallel processing (step 1)
Query index 0 was solved

Query is NOT satisfied.

Spent 0.001421 on verification
@@@4.47,40296@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -ltl\ tarjan\ --ltl-heur\ dist\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.EDy1Nqro1C /home/mcc/BenchKit/bin/tmp/tmp.iZz8nSIa2I --binary-query-io 1 -x 1 -n

FORMULA BridgeAndVehicles-PT-V50P50N50-LTLFireability-12 FALSE TECHNIQUES COLLATERAL_PROCESSING STRUCTURAL_REDUCTION QUERY_REDUCTION SAT_SMT EXPLICIT STATE_COMPRESSION STUBBORN_SETS
Time left: 3393
------------------- QUERY 2 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.057639 on verification
@@@5.72,162044@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -ltl\ tarjan\ --ltl-heur\ dist\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.EDy1Nqro1C /home/mcc/BenchKit/bin/tmp/tmp.iZz8nSIa2I --binary-query-io 1 -x 2 -n

FORMULA BridgeAndVehicles-PT-V50P50N50-LTLFireability-09 FALSE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP STUBBORN AUT_STUB HEURISTIC DIST_HEUR OPTIM-1
Time left: 3387
------------------- QUERY 3 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.006525 on verification
@@@5.68,39824@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -ltl\ ndfs\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.EDy1Nqro1C /home/mcc/BenchKit/bin/tmp/tmp.iZz8nSIa2I --binary-query-io 1 -x 3 -n

FORMULA BridgeAndVehicles-PT-V50P50N50-LTLFireability-14 FALSE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 3381
------------------- QUERY 4 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.047658 on verification
@@@4.50,161932@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -ltl\ tarjan\ --ltl-heur\ dist\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.EDy1Nqro1C /home/mcc/BenchKit/bin/tmp/tmp.iZz8nSIa2I --binary-query-io 1 -x 4 -n

FORMULA BridgeAndVehicles-PT-V50P50N50-LTLFireability-15 FALSE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP STUBBORN AUT_STUB HEURISTIC DIST_HEUR OPTIM-1
Time left: 3376
------------------- QUERY 5 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.006563 on verification
@@@4.47,37284@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -ltl\ ndfs\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.EDy1Nqro1C /home/mcc/BenchKit/bin/tmp/tmp.iZz8nSIa2I --binary-query-io 1 -x 5 -n

FORMULA BridgeAndVehicles-PT-V50P50N50-LTLFireability-11 FALSE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 3372
------------------- QUERY 6 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is satisfied.
Spent 0.044793 on verification
@@@5.22,162092@@@
FORMULA BridgeAndVehicles-PT-V50P50N50-LTLFireability-06 TRUE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP OPTIM-1

Query index 0 was solved
Query is satisfied.
Spent 0.045569 on verification
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -ltl\ tarjan\ --ltl-heur\ fire-count\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.EDy1Nqro1C /home/mcc/BenchKit/bin/tmp/tmp.iZz8nSIa2I --binary-query-io 1 -x 6 -n

FORMULA BridgeAndVehicles-PT-V50P50N50-LTLFireability-06 TRUE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP STUBBORN AUT_STUB HEURISTIC LOGFIRECOUNT_HEUR(5000) OPTIM-1
Time left: 3366
------------------- QUERY 7 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.043017 on verification
FORMULA BridgeAndVehicles-PT-V50P50N50-LTLFireability-08 FALSE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP STUBBORN AUT_STUB HEURISTIC DIST_HEUR OPTIM-1

Query index 0 was solved
Query is NOT satisfied.
Spent 0.046198 on verification
@@@4.13,162128@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -ltl\ tarjan\ --ltl-heur\ dist\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.EDy1Nqro1C /home/mcc/BenchKit/bin/tmp/tmp.iZz8nSIa2I --binary-query-io 1 -x 7 -n

FORMULA BridgeAndVehicles-PT-V50P50N50-LTLFireability-08 FALSE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP STUBBORN AUT_STUB HEURISTIC LOGFIRECOUNT_HEUR(5000) OPTIM-1
Time left: 3362
------------------- QUERY 8 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is satisfied.
Spent 0.046408 on verification
@@@4.12,162076@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -ltl\ tarjan\ --ltl-heur\ dist\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.EDy1Nqro1C /home/mcc/BenchKit/bin/tmp/tmp.iZz8nSIa2I --binary-query-io 1 -x 8 -n

FORMULA BridgeAndVehicles-PT-V50P50N50-LTLFireability-07 TRUE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP STUBBORN AUT_STUB HEURISTIC DIST_HEUR OPTIM-1
Time left: 3358
------------------- QUERY 9 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.008868 on verification
FORMULA BridgeAndVehicles-PT-V50P50N50-LTLFireability-03 FALSE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP STUBBORN AUT_STUB HEURISTIC LOGFIRECOUNT_HEUR(5000) OPTIM-1

Query index 0 was solved
Query is NOT satisfied.
Spent 0.051755 on verification
@@@4.13,161948@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -ltl\ tarjan\ --ltl-heur\ fire-count\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.EDy1Nqro1C /home/mcc/BenchKit/bin/tmp/tmp.iZz8nSIa2I --binary-query-io 1 -x 9 -n

FORMULA BridgeAndVehicles-PT-V50P50N50-LTLFireability-03 FALSE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 3353
------------------- QUERY 10 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.044147 on verification
@@@4.13,162024@@@
FORMULA BridgeAndVehicles-PT-V50P50N50-LTLFireability-04 FALSE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP STUBBORN AUT_STUB HEURISTIC DIST_HEUR OPTIM-1

Query index 0 was solved
Query is NOT satisfied.
Spent 0.046428 on verification
@@@4.14,162032@@@
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -ltl\ tarjan\ --ltl-heur\ dist\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.EDy1Nqro1C /home/mcc/BenchKit/bin/tmp/tmp.iZz8nSIa2I --binary-query-io 1 -x 10 -n
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -ltl\ tarjan\ --ltl-heur\ fire-count\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.EDy1Nqro1C /home/mcc/BenchKit/bin/tmp/tmp.iZz8nSIa2I --binary-query-io 1 -x 10 -n

FORMULA BridgeAndVehicles-PT-V50P50N50-LTLFireability-04 FALSE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP STUBBORN AUT_STUB HEURISTIC LOGFIRECOUNT_HEUR(5000) OPTIM-1
Time left: 3349
------------------- QUERY 11 ----------------------
No solution found



Time left: 3047
------------------- QUERY 12 ----------------------
Solution found by parallel processing (step 1)

Query index 0 was solved
Query is NOT satisfied.
Spent 0.008103 on verification
@@@4.26,40340@@@
FORMULA BridgeAndVehicles-PT-V50P50N50-LTLFireability-00 FALSE TECHNIQUES EXPLICIT TARJAN WEAK_SKIP STUBBORN AUT_STUB HEURISTIC LOGFIRECOUNT_HEUR(5000) OPTIM-1

Query index 0 was solved
Query is NOT satisfied.
Spent 0.052709 on verification
parallel: This job succeeded:
eval /usr/bin/time -f "@@@%e,%M@@@" /home/mcc/BenchKit/bin/verifypn -n -ltl\ ndfs\ -q\ 0\ -l\ 0\ -d\ 119 /home/mcc/BenchKit/bin/tmp/tmp.EDy1Nqro1C /home/mcc/BenchKit/bin/tmp/tmp.iZz8nSIa2I --binary-query-io 1 -x 12 -n

FORMULA BridgeAndVehicles-PT-V50P50N50-LTLFireability-00 FALSE TECHNIQUES EXPLICIT NDFS WEAK_SKIP HEURISTIC AUTOMATON_HEUR OPTIM-1
Time left: 3043
------------------- QUERY 13 ----------------------
No solution found



Time left: 2742
---------------------------------------------------
Step 2: Sequential processing
---------------------------------------------------
Remaining 2 queries are verified sequentially.
Each query is verified for a dynamic timeout (at least 598 seconds)
Time left: 2742
------------------- QUERY 11 ----------------------
Running query 11 for 1371 seconds. Remaining: 2 queries and 2742 seconds
No solution found



Time left: 1369
------------------- QUERY 13 ----------------------
Running query 13 for 1369 seconds. Remaining: 1 queries and 1369 seconds
No solution found



Time left: -3
Out of time, terminating!
terminated-with-cleanup

BK_STOP 1652585514452

--------------------
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="BridgeAndVehicles-PT-V50P50N50"
export BK_EXAMINATION="LTLFireability"
export BK_TOOL="tapaal"
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 tapaal"
echo " Input is BridgeAndVehicles-PT-V50P50N50, examination is LTLFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r021-tall-165251914000268"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/BridgeAndVehicles-PT-V50P50N50.tgz
mv BridgeAndVehicles-PT-V50P50N50 execution
cd execution
if [ "LTLFireability" = "ReachabilityDeadlock" ] || [ "LTLFireability" = "UpperBounds" ] || [ "LTLFireability" = "QuasiLiveness" ] || [ "LTLFireability" = "StableMarking" ] || [ "LTLFireability" = "Liveness" ] || [ "LTLFireability" = "OneSafe" ] || [ "LTLFireability" = "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 [ "LTLFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "LTLFireability" != "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 "LTLFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property LTLFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "LTLFireability.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 '' LTLFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "LTLFireability" = "ReachabilityDeadlock" ] || [ "LTLFireability" = "QuasiLiveness" ] || [ "LTLFireability" = "StableMarking" ] || [ "LTLFireability" = "Liveness" ] || [ "LTLFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME LTLFireability"
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 ;