About the Execution of 2021-gold for SimpleLoadBal-PT-05
Execution Summary | |||||
Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
216.623 | 11788.00 | 21575.00 | 376.10 | 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 | 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.r251-smll-165303244900004.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 gold2021
Input is SimpleLoadBal-PT-05, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r251-smll-165303244900004
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 384K
-rw-r--r-- 1 mcc users 8.3K Apr 29 14:19 CTLCardinality.txt
-rw-r--r-- 1 mcc users 71K Apr 29 14:19 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.6K Apr 29 14:18 CTLFireability.txt
-rw-r--r-- 1 mcc users 46K Apr 29 14:18 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 10 09:34 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 5.0K May 9 09:02 LTLCardinality.txt
-rw-r--r-- 1 mcc users 28K May 9 09:02 LTLCardinality.xml
-rw-r--r-- 1 mcc users 3.2K May 9 09:02 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K May 9 09:02 LTLFireability.xml
-rw-r--r-- 1 mcc users 1.8K May 9 09:02 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.9K May 9 09:02 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 10 09:34 equiv_col
-rw-r--r-- 1 mcc users 3 May 10 09:34 instance
-rw-r--r-- 1 mcc users 6 May 10 09:34 iscolored
-rw-r--r-- 1 mcc users 155K May 10 09:34 model.pnml
--------------------
content from stdout:
=== Data for post analysis generated by BenchKit (invocation template)
The expected result is a vector of positive values
NUM_VECTOR
here is the order used to build the result vector(from text file)
FORMULA_NAME SimpleLoadBal-PT-05-UpperBounds-00
FORMULA_NAME SimpleLoadBal-PT-05-UpperBounds-01
FORMULA_NAME SimpleLoadBal-PT-05-UpperBounds-02
FORMULA_NAME SimpleLoadBal-PT-05-UpperBounds-03
FORMULA_NAME SimpleLoadBal-PT-05-UpperBounds-04
FORMULA_NAME SimpleLoadBal-PT-05-UpperBounds-05
FORMULA_NAME SimpleLoadBal-PT-05-UpperBounds-06
FORMULA_NAME SimpleLoadBal-PT-05-UpperBounds-07
FORMULA_NAME SimpleLoadBal-PT-05-UpperBounds-08
FORMULA_NAME SimpleLoadBal-PT-05-UpperBounds-09
FORMULA_NAME SimpleLoadBal-PT-05-UpperBounds-10
FORMULA_NAME SimpleLoadBal-PT-05-UpperBounds-11
FORMULA_NAME SimpleLoadBal-PT-05-UpperBounds-12
FORMULA_NAME SimpleLoadBal-PT-05-UpperBounds-13
FORMULA_NAME SimpleLoadBal-PT-05-UpperBounds-14
FORMULA_NAME SimpleLoadBal-PT-05-UpperBounds-15
=== Now, execution of the tool begins
BK_START 1653064672352
Running Version 0
[2022-05-20 16:37:55] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, UpperBounds, -spotpath, /home/mcc/BenchKit/bin//..//ltlfilt, -z3path, /home/mcc/BenchKit/bin//..//z3/bin/z3, -yices2path, /home/mcc/BenchKit/bin//..//yices/bin/yices, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2022-05-20 16:37:55] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2022-05-20 16:37:55] [INFO ] Load time of PNML (sax parser for PT used): 101 ms
[2022-05-20 16:37:55] [INFO ] Transformed 59 places.
[2022-05-20 16:37:55] [INFO ] Transformed 180 transitions.
[2022-05-20 16:37:55] [INFO ] Found NUPN structural information;
[2022-05-20 16:37:55] [INFO ] Completing missing partition info from NUPN : creating a component with [P_client_idle_1, P_client_idle_2, P_client_idle_3, P_client_idle_4, P_client_idle_5, P_client_waiting_1, P_client_waiting_2, P_client_waiting_3, P_client_waiting_4, P_client_waiting_5, P_client_request_1, P_client_request_2, P_client_request_3, P_client_request_4, P_client_request_5, P_client_ack_1, P_client_ack_2, P_client_ack_3, P_client_ack_4, P_client_ack_5, P_server_idle_1, P_server_idle_2, P_server_waiting_1, P_server_waiting_2, P_server_processed_1, P_server_processed_2, P_server_notification_1, P_server_notification_2, P_server_notification_ack_1, P_server_notification_ack_2, P_server_request_1_1, P_server_request_1_2, P_server_request_2_1, P_server_request_2_2, P_server_request_3_1, P_server_request_3_2, P_server_request_4_1, P_server_request_4_2, P_server_request_5_1, P_server_request_5_2, P_lb_idle_1, P_lb_routing_1_1, P_lb_routing_1_2, P_lb_routing_1_3, P_lb_routing_1_4, P_lb_routing_1_5, P_lb_balancing_1, P_lb_load_1_0, P_lb_load_1_1, P_lb_load_1_2, P_lb_load_1_3, P_lb_load_1_4, P_lb_load_1_5, P_lb_load_2_0, P_lb_load_2_1, P_lb_load_2_2, P_lb_load_2_3, P_lb_load_2_4, P_lb_load_2_5]
[2022-05-20 16:37:55] [INFO ] Parsed PT model containing 59 places and 180 transitions in 165 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 11 ms.
FORMULA SimpleLoadBal-PT-05-UpperBounds-10 1 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA SimpleLoadBal-PT-05-UpperBounds-05 1 TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA SimpleLoadBal-PT-05-UpperBounds-04 1 TECHNIQUES TOPOLOGICAL INITIAL_STATE
Normalized transition count is 140 out of 180 initially.
// Phase 1: matrix 140 rows 59 cols
[2022-05-20 16:37:55] [INFO ] Computed 19 place invariants in 23 ms
Incomplete random walk after 10000 steps, including 2 resets, run finished after 72 ms. (steps per millisecond=138 ) properties (out of 13) seen :12
FORMULA SimpleLoadBal-PT-05-UpperBounds-15 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SimpleLoadBal-PT-05-UpperBounds-14 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SimpleLoadBal-PT-05-UpperBounds-13 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SimpleLoadBal-PT-05-UpperBounds-12 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SimpleLoadBal-PT-05-UpperBounds-11 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SimpleLoadBal-PT-05-UpperBounds-09 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SimpleLoadBal-PT-05-UpperBounds-08 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SimpleLoadBal-PT-05-UpperBounds-07 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SimpleLoadBal-PT-05-UpperBounds-06 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SimpleLoadBal-PT-05-UpperBounds-03 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SimpleLoadBal-PT-05-UpperBounds-02 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA SimpleLoadBal-PT-05-UpperBounds-01 1 TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 18 ms. (steps per millisecond=555 ) properties (out of 1) seen :0
[2022-05-20 16:37:55] [INFO ] Flow matrix only has 140 transitions (discarded 40 similar events)
// Phase 1: matrix 140 rows 59 cols
[2022-05-20 16:37:55] [INFO ] Computed 19 place invariants in 10 ms
[2022-05-20 16:37:56] [INFO ] [Real]Absence check using 16 positive place invariants in 30 ms returned sat
[2022-05-20 16:37:56] [INFO ] [Real]Absence check using 16 positive and 3 generalized place invariants in 2 ms returned sat
[2022-05-20 16:37:56] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2022-05-20 16:37:56] [INFO ] [Real]Absence check using state equation in 76 ms returned sat
[2022-05-20 16:37:56] [INFO ] Solution in real domain found non-integer solution.
[2022-05-20 16:37:56] [INFO ] [Nat]Absence check using 16 positive place invariants in 7 ms returned sat
[2022-05-20 16:37:56] [INFO ] [Nat]Absence check using 16 positive and 3 generalized place invariants in 3 ms returned sat
[2022-05-20 16:37:56] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2022-05-20 16:37:56] [INFO ] [Nat]Absence check using state equation in 59 ms returned sat
[2022-05-20 16:37:56] [INFO ] State equation strengthened by 61 read => feed constraints.
[2022-05-20 16:37:56] [INFO ] [Nat]Added 61 Read/Feed constraints in 38 ms returned sat
[2022-05-20 16:37:56] [INFO ] Deduced a trap composed of 8 places in 112 ms of which 6 ms to minimize.
[2022-05-20 16:37:56] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 163 ms
[2022-05-20 16:37:56] [INFO ] Computed and/alt/rep : 24/132/24 causal constraints (skipped 111 transitions) in 47 ms.
[2022-05-20 16:37:57] [INFO ] Added : 17 causal constraints over 4 iterations in 281 ms. Result :sat
Minimization took 44 ms.
Current structural bounds on expressions (after SMT) : [1] Max seen :[0]
Incomplete Parikh walk after 61500 steps, including 982 resets, run finished after 316 ms. (steps per millisecond=194 ) properties (out of 1) seen :0 could not realise parikh vector
Support contains 1 out of 59 places. Attempting structural reductions.
Drop transitions removed 14 transitions
Starting structural reductions, iteration 0 : 59/59 places, 166/166 transitions.
Reduce places removed 1 places and 13 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 58 transition count 153
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 1 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 1 with 4 rules applied. Total rules applied 5 place count 56 transition count 151
Performed 5 Post agglomeration using F-continuation condition.Transition count delta: 5
Deduced a syphon composed of 5 places in 1 ms
Reduce places removed 10 places and 0 transitions.
Iterating global reduction 1 with 15 rules applied. Total rules applied 20 place count 46 transition count 146
Performed 5 Post agglomeration using F-continuation condition.Transition count delta: 5
Deduced a syphon composed of 5 places in 1 ms
Reduce places removed 5 places and 0 transitions.
Iterating global reduction 1 with 10 rules applied. Total rules applied 30 place count 41 transition count 141
Free-agglomeration rule (complex) applied 5 times.
Iterating global reduction 1 with 5 rules applied. Total rules applied 35 place count 41 transition count 136
Reduce places removed 5 places and 0 transitions.
Iterating post reduction 1 with 5 rules applied. Total rules applied 40 place count 36 transition count 136
Applied a total of 40 rules in 121 ms. Remains 36 /59 variables (removed 23) and now considering 136/166 (removed 30) transitions.
Finished structural reductions, in 1 iterations. Remains : 36/59 places, 136/166 transitions.
Normalized transition count is 104 out of 136 initially.
// Phase 1: matrix 104 rows 36 cols
[2022-05-20 16:37:57] [INFO ] Computed 14 place invariants in 4 ms
Incomplete random walk after 1000000 steps, including 2 resets, run finished after 3174 ms. (steps per millisecond=315 ) properties (out of 1) seen :0
Incomplete Best-First random walk after 1000001 steps, including 2 resets, run finished after 1049 ms. (steps per millisecond=953 ) properties (out of 1) seen :0
[2022-05-20 16:38:01] [INFO ] Flow matrix only has 104 transitions (discarded 32 similar events)
// Phase 1: matrix 104 rows 36 cols
[2022-05-20 16:38:01] [INFO ] Computed 14 place invariants in 3 ms
[2022-05-20 16:38:01] [INFO ] [Real]Absence check using 10 positive place invariants in 7 ms returned sat
[2022-05-20 16:38:01] [INFO ] [Real]Absence check using 10 positive and 4 generalized place invariants in 3 ms returned sat
[2022-05-20 16:38:01] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2022-05-20 16:38:01] [INFO ] [Real]Absence check using state equation in 58 ms returned sat
[2022-05-20 16:38:01] [INFO ] Solution in real domain found non-integer solution.
[2022-05-20 16:38:01] [INFO ] [Nat]Absence check using 10 positive place invariants in 8 ms returned sat
[2022-05-20 16:38:01] [INFO ] [Nat]Absence check using 10 positive and 4 generalized place invariants in 4 ms returned sat
[2022-05-20 16:38:01] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2022-05-20 16:38:01] [INFO ] [Nat]Absence check using state equation in 59 ms returned sat
[2022-05-20 16:38:01] [INFO ] State equation strengthened by 54 read => feed constraints.
[2022-05-20 16:38:02] [INFO ] [Nat]Added 54 Read/Feed constraints in 23 ms returned sat
[2022-05-20 16:38:02] [INFO ] Deduced a trap composed of 8 places in 74 ms of which 3 ms to minimize.
[2022-05-20 16:38:02] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 97 ms
[2022-05-20 16:38:02] [INFO ] Computed and/alt/rep : 10/75/10 causal constraints (skipped 89 transitions) in 29 ms.
[2022-05-20 16:38:02] [INFO ] Added : 9 causal constraints over 2 iterations in 118 ms. Result :sat
Minimization took 47 ms.
Current structural bounds on expressions (after SMT) : [1] Max seen :[0]
Incomplete Parikh walk after 26400 steps, including 588 resets, run finished after 180 ms. (steps per millisecond=146 ) properties (out of 1) seen :0 could not realise parikh vector
Support contains 1 out of 36 places. Attempting structural reductions.
Starting structural reductions, iteration 0 : 36/36 places, 136/136 transitions.
Applied a total of 0 rules in 18 ms. Remains 36 /36 variables (removed 0) and now considering 136/136 (removed 0) transitions.
Finished structural reductions, in 1 iterations. Remains : 36/36 places, 136/136 transitions.
Starting structural reductions, iteration 0 : 36/36 places, 136/136 transitions.
Applied a total of 0 rules in 12 ms. Remains 36 /36 variables (removed 0) and now considering 136/136 (removed 0) transitions.
[2022-05-20 16:38:02] [INFO ] Flow matrix only has 104 transitions (discarded 32 similar events)
// Phase 1: matrix 104 rows 36 cols
[2022-05-20 16:38:02] [INFO ] Computed 14 place invariants in 4 ms
[2022-05-20 16:38:02] [INFO ] Implicit Places using invariants in 144 ms returned [7, 8]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 148 ms to find 2 implicit places.
[2022-05-20 16:38:02] [INFO ] Redundant transitions in 6 ms returned []
[2022-05-20 16:38:02] [INFO ] Flow matrix only has 104 transitions (discarded 32 similar events)
// Phase 1: matrix 104 rows 34 cols
[2022-05-20 16:38:02] [INFO ] Computed 12 place invariants in 4 ms
[2022-05-20 16:38:02] [INFO ] Dead Transitions using invariants and state equation in 197 ms returned [22, 78, 79, 83, 91, 92, 96, 104, 105, 109, 117, 118, 122, 130, 131, 135]
Found 16 dead transitions using SMT.
Drop transitions removed 16 transitions
Dead transitions reduction (with SMT) removed 16 transitions :[135, 131, 130, 122, 118, 117, 109, 105, 104, 96, 92, 91, 83, 79, 78, 22]
Starting structural reductions, iteration 1 : 34/36 places, 120/136 transitions.
Graph (complete) has 354 edges and 34 vertex of which 1 are kept as prefixes of interest. Removing 33 places using SCC suffix rule.8 ms
Discarding 33 places :
Also discarding 120 output transitions
Drop transitions removed 120 transitions
Deduced a syphon composed of 1 places in 0 ms
Applied a total of 1 rules in 13 ms. Remains 1 /34 variables (removed 33) and now considering 0/120 (removed 120) transitions.
[2022-05-20 16:38:02] [INFO ] Computed 0 place invariants in 0 ms
[2022-05-20 16:38:02] [INFO ] Implicit Places using invariants in 8 ms returned []
[2022-05-20 16:38:02] [INFO ] Computed 0 place invariants in 0 ms
[2022-05-20 16:38:02] [INFO ] Implicit Places using invariants and state equation in 19 ms returned []
Implicit Place search using SMT with State Equation took 33 ms to find 0 implicit places.
Finished structural reductions, in 2 iterations. Remains : 1/36 places, 0/136 transitions.
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
FORMULA SimpleLoadBal-PT-05-UpperBounds-00 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
All properties solved without resorting to model-checking.
BK_STOP 1653064684140
--------------------
content from stderr:
+ export BINDIR=/home/mcc/BenchKit/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ UpperBounds = StateSpace ]]
+ /home/mcc/BenchKit/bin//..//runeclipse.sh /home/mcc/execution UpperBounds -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ cut -d . -f 9
++ ls /home/mcc/BenchKit/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202104292328.jar
+ VERSION=0
+ echo 'Running Version 0'
+ /home/mcc/BenchKit/bin//..//itstools/its-tools -data /home/mcc/execution/workspace -pnfolder /home/mcc/execution -examination UpperBounds -spotpath /home/mcc/BenchKit/bin//..//ltlfilt -z3path /home/mcc/BenchKit/bin//..//z3/bin/z3 -yices2path /home/mcc/BenchKit/bin//..//yices/bin/yices -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600 -vmargs -Dosgi.locking=none -Declipse.stateSaveDelayInterval=-1 -Dosgi.configuration.area=/tmp/.eclipse -Xss128m -Xms40m -Xmx16000m
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="SimpleLoadBal-PT-05"
export BK_EXAMINATION="UpperBounds"
export BK_TOOL="gold2021"
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 gold2021"
echo " Input is SimpleLoadBal-PT-05, examination is UpperBounds"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r251-smll-165303244900004"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/SimpleLoadBal-PT-05.tgz
mv SimpleLoadBal-PT-05 execution
cd execution
if [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "UpperBounds" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] || [ "UpperBounds" = "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 [ "UpperBounds" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "UpperBounds" != "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 "UpperBounds.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property UpperBounds.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "UpperBounds.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 [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] ; then
echo "FORMULA_NAME UpperBounds"
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 ;