About the Execution of 2025-gold for CANInsertWithFailure-PT-030
| Execution Summary | |||||
| Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
| 722.880 | 16027.00 | 45615.00 | 165.00 | F | normal |
Execution Chart
We display below the execution chart for this examination (boot time has been removed).

Trace from the execution
Formatting '/data/fkordon/mcc2026-input.r048-tall-177946846800453.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2026-input.qcow2 backing_fmt=qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
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=====================================================================
Generated by BenchKit 2-5973
Executing tool gold2025
Input is CANInsertWithFailure-PT-030, examination is StableMarking
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r048-tall-177946846800453
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 6.2M
-rw-r--r-- 1 mcc users 11K Mar 6 10:41 CTLCardinality.txt
-rw-r--r-- 1 mcc users 93K Mar 6 10:41 CTLCardinality.xml
-rw-r--r-- 1 mcc users 8.3K Mar 6 10:39 CTLFireability.txt
-rw-r--r-- 1 mcc users 62K Mar 6 10:39 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.7K Mar 15 07:54 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K Mar 15 07:54 LTLCardinality.xml
-rw-r--r-- 1 mcc users 3.1K Mar 15 07:54 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Mar 15 07:54 LTLFireability.xml
-rw-r--r-- 1 mcc users 28K Mar 6 10:41 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 241K Mar 6 10:41 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 12K Mar 6 10:41 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 78K Mar 6 10:41 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 2.0K Mar 15 07:54 UpperBounds.txt
-rw-r--r-- 1 mcc users 4.0K Mar 15 07:54 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 4 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 5.6M Mar 3 18:30 model.pnml
--------------------
content from stdout:
=== Data for post analysis generated by BenchKit (invocation template)
The expected result is a vector of booleans
BOOL_VECTOR
FORMULA_NAME StableMarking
=== Now, execution of the tool begins
BK_START 1779483596952
Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=StableMarking
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=CANInsertWithFailure-PT-030
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
StableMarking PT
Running Version 202505121319
[2026-05-22 20:59:58] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, StableMarking, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 1800]
[2026-05-22 20:59:58] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-22 20:59:58] [INFO ] Load time of PNML (sax parser for PT used): 251 ms
[2026-05-22 20:59:58] [INFO ] Transformed 2164 places.
[2026-05-22 20:59:58] [INFO ] Transformed 5580 transitions.
[2026-05-22 20:59:58] [INFO ] Parsed PT model containing 2164 places and 5580 transitions and 15000 arcs in 373 ms.
[2026-05-22 20:59:59] [INFO ] Flatten gal took : 586 ms
[2026-05-22 21:00:00] [INFO ] Flatten gal took : 319 ms
[2026-05-22 21:00:00] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality11952969359625749424.gal : 111 ms
RANDOM walk for 40000 steps (54 resets) in 5558 ms. (7 steps per ms) remains 87/2164 properties
[2026-05-22 21:00:00] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality14871885093144830567.prop : 5 ms
BEST_FIRST walk for 4004 steps (8 resets) in 21 ms. (182 steps per ms) remains 84/87 properties
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality11952969359625749424.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality14871885093144830567.prop' '--nowitness' '--gen-order' 'FOLLOW'
BEST_FIRST walk for 4004 steps (8 resets) in 19 ms. (200 steps per ms) remains 81/84 properties
BEST_FIRST walk for 4004 steps (8 resets) in 16 ms. (235 steps per ms) remains 78/81 properties
BEST_FIRST walk for 4004 steps (8 resets) in 19 ms. (200 steps per ms) remains 75/78 properties
BEST_FIRST walk for 4004 steps (8 resets) in 14 ms. (266 steps per ms) remains 72/75 properties
BEST_FIRST walk for 4004 steps (8 resets) in 15 ms. (250 steps per ms) remains 69/72 properties
BEST_FIRST walk for 4004 steps (8 resets) in 16 ms. (235 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 10 ms. (364 steps per ms) remains 69/69 properties
its-reach command run as :
BEST_FIRST walk for 4004 steps (8 resets) in 22 ms. (174 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 14 ms. (266 steps per ms) remains 69/69 properties
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...330
BEST_FIRST walk for 4004 steps (8 resets) in 17 ms. (222 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 20 ms. (190 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 17 ms. (222 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 19 ms. (200 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 11 ms. (333 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 11 ms. (333 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 14 ms. (266 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 15 ms. (250 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 9 ms. (400 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 15 ms. (250 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 8 ms. (444 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 14 ms. (266 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 17 ms. (222 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 13 ms. (286 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 22 ms. (174 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 21 ms. (182 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 19 ms. (200 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 12 ms. (308 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 9 ms. (400 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 22 ms. (174 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 12 ms. (308 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 9 ms. (400 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 18 ms. (210 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 15 ms. (250 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 12 ms. (308 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 13 ms. (286 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 12 ms. (308 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 8 ms. (444 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 16 ms. (235 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 12 ms. (308 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 8 ms. (444 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 11 ms. (333 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 9 ms. (400 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 10 ms. (364 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 11 ms. (333 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 8 ms. (444 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 9 ms. (400 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 16 ms. (235 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 9 ms. (400 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 9 ms. (400 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 11 ms. (333 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 10 ms. (364 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 9 ms. (400 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 11 ms. (333 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (8 resets) in 8 ms. (444 steps per ms) remains 69/69 properties
// Phase 1: matrix 5580 rows 2164 cols
[2026-05-22 21:00:00] [INFO ] Computed 33 invariants in 234 ms
[2026-05-22 21:00:01] [INFO ] State equation strengthened by 1770 read => feed constraints.
Loading property file /tmp/ReachabilityCardinality14871885093144830567.prop.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/69 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 69 unsolved
At refinement iteration 1 (OVERLAPS) 2032/2101 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 69 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/2101 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 69 unsolved
At refinement iteration 3 (OVERLAPS) 58/2159 variables, 29/30 constraints. Problems are: Problem set: 0 solved, 69 unsolved
Error getting values : (error "ParserException while parsing response: (timeout
org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 2159/7744 variables, and 30 constraints, problems are : Problem set: 0 solved, 69 unsolved in 5131 ms.
Refiners :[Positive P Invariants (semi-flows): 30/31 constraints, Generalized P Invariants (flows): 0/2 constraints, State Equation: 0/2164 constraints, ReadFeed: 0/1770 constraints, PredecessorRefiner: 69/69 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 69 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/69 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 69 unsolved
At refinement iteration 1 (OVERLAPS) 2032/2101 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 69 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-22 21:00:06] [INFO ] Deduced a trap composed of 5 places in 148 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-22 21:00:07] [INFO ] Deduced a trap composed of 5 places in 103 ms of which 6 ms to minimize.
Invariant property smplace_6 does not hold.
Invariant property smplace_5 does not hold.
Invariant property smplace_4 does not hold.
Invariant property smplace_3 does not hold.
SDD proceeding with computation,375 properties remain. new max is 2
SDD size :1 after 3
Invariant property smplace_20 does not hold.
Invariant property smplace_19 does not hold.
Invariant property smplace_18 does not hold.
SDD proceeding with computation,372 properties remain. new max is 2
SDD size :3 after 5
Invariant property smplace_34 does not hold.
Invariant property smplace_33 does not hold.
Invariant property smplace_32 does not hold.
SDD proceeding with computation,369 properties remain. new max is 2
SDD size :5 after 7
Invariant property smplace_48 does not hold.
Invariant property smplace_47 does not hold.
Invariant property smplace_46 does not hold.
SDD proceeding with computation,366 properties remain. new max is 2
SDD size :7 after 9
Invariant property smplace_62 does not hold.
Invariant property smplace_61 does not hold.
Invariant property smplace_60 does not hold.
At refinement iteration 2 (INCLUDED_ONLY) 0/2101 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 69 unsolved
SDD proceeding with computation,363 properties remain. new max is 2
SDD size :9 after 11
Invariant property smplace_76 does not hold.
Invariant property smplace_75 does not hold.
Invariant property smplace_74 does not hold.
SDD proceeding with computation,360 properties remain. new max is 2
SDD size :11 after 13
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 2101/7744 variables, and 3 constraints, problems are : Problem set: 0 solved, 69 unsolved in 5023 ms.
Refiners :[Positive P Invariants (semi-flows): 1/31 constraints, Generalized P Invariants (flows): 0/2 constraints, State Equation: 0/2164 constraints, ReadFeed: 0/1770 constraints, PredecessorRefiner: 0/69 constraints, Known Traps: 2/2 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 10532ms problems are : Problem set: 0 solved, 69 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 69 out of 2164 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 2164/2164 places, 5580/5580 transitions.
Graph (complete) has 7651 edges and 2164 vertex of which 2163 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.10 ms
Discarding 1 places :
Also discarding 0 output transitions
Invariant property smplace_90 does not hold.
Invariant property smplace_89 does not hold.
Invariant property smplace_88 does not hold.
Drop transitions (Trivial Post-Agglo cleanup.) removed 210 transitions
Trivial Post-agglo rules discarded 210 transitions
Performed 210 trivial Post agglomeration. Transition count delta: 210
Iterating post reduction 0 with 210 rules applied. Total rules applied 211 place count 2163 transition count 5370
Reduce places removed 210 places and 0 transitions.
Iterating post reduction 1 with 210 rules applied. Total rules applied 421 place count 1953 transition count 5370
SDD proceeding with computation,357 properties remain. new max is 2
SDD size :13 after 15
Invariant property smplace_104 does not hold.
Invariant property smplace_103 does not hold.
Invariant property smplace_102 does not hold.
Performed 806 Post agglomeration using F-continuation condition.Transition count delta: 806
Deduced a syphon composed of 806 places in 2 ms
Reduce places removed 806 places and 0 transitions.
Iterating global reduction 2 with 1612 rules applied. Total rules applied 2033 place count 1147 transition count 4564
SDD proceeding with computation,354 properties remain. new max is 2
SDD size :15 after 17
Drop transitions (Redundant composition of simpler transitions.) removed 748 transitions
Redundant transition composition rules discarded 748 transitions
Iterating global reduction 2 with 748 rules applied. Total rules applied 2781 place count 1147 transition count 3816
Invariant property smplace_118 does not hold.
Invariant property smplace_117 does not hold.
Invariant property smplace_116 does not hold.
Partial Free-agglomeration rule applied 953 times.
Drop transitions (Partial Free agglomeration) removed 953 transitions
Iterating global reduction 2 with 953 rules applied. Total rules applied 3734 place count 1147 transition count 3816
Applied a total of 3734 rules in 1089 ms. Remains 1147 /2164 variables (removed 1017) and now considering 3816/5580 (removed 1764) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1096 ms. Remains : 1147/2164 places, 3816/5580 transitions.
SDD proceeding with computation,351 properties remain. new max is 2
SDD size :17 after 19
RANDOM walk for 86751 steps (594 resets) in 1701 ms. (50 steps per ms) remains 0/69 properties
ITS runner timed out or was interrupted.
Invariant property smplace_132 does not hold.
Invariant property smplace_131 does not hold.
Invariant property smplace_130 does not hold.
ITS tools runner thread asked to quit. Dying gracefully.
Able to resolve query StableMarking after proving 2164 properties.
FORMULA StableMarking FALSE TECHNIQUES RANDOM_WALK BESTFIRST_WALK TOPOLOGICAL
Total runtime 14652 ms.
BK_STOP 1779483612979
--------------------
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
+ [[ StableMarking = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution StableMarking -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202505121319.jar
+ VERSION=202505121319
+ echo 'Running Version 202505121319'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination StableMarking -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800
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="CANInsertWithFailure-PT-030"
export BK_EXAMINATION="StableMarking"
export BK_TOOL="gold2025"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="1800"
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 2-5973"
echo " Executing tool gold2025"
echo " Input is CANInsertWithFailure-PT-030, examination is StableMarking"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r048-tall-177946846800453"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/CANInsertWithFailure-PT-030.tgz
mv CANInsertWithFailure-PT-030 execution
cd execution
if [ "StableMarking" = "ReachabilityDeadlock" ] || [ "StableMarking" = "UpperBounds" ] || [ "StableMarking" = "QuasiLiveness" ] || [ "StableMarking" = "StableMarking" ] || [ "StableMarking" = "Liveness" ] || [ "StableMarking" = "OneSafe" ] || [ "StableMarking" = "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 [ "StableMarking" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "StableMarking" != "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 "StableMarking.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 '
echo "FORMULA_NAME $x"
done
elif [ "StableMarking" = "ReachabilityDeadlock" ] || [ "StableMarking" = "QuasiLiveness" ] || [ "StableMarking" = "StableMarking" ] || [ "StableMarking" = "Liveness" ] || [ "StableMarking" = "OneSafe" ] ; then
echo "FORMULA_NAME StableMarking"
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 ;
