Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2021-input.r075-tall-162039097300168.qcow2', fmt=qcow2 size=4294967296 backing_file='/data/fkordon/mcc2021-input.qcow2' encryption=off cluster_size=65536 lazy_refcounts=off
Waiting for the VM to be ready (probing ssh)
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=====================================================================
Generated by BenchKit 2-4028
Executing tool gold2020
Input is DLCround-PT-06b, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r075-tall-162039097300168
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 1.2M
-rw-r--r-- 1 mcc users 12K May 5 16:58 CTLCardinality.txt
-rw-r--r-- 1 mcc users 100K May 5 16:58 CTLCardinality.xml
-rw-r--r-- 1 mcc users 13K May 5 16:58 CTLFireability.txt
-rw-r--r-- 1 mcc users 109K May 5 16:58 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 6 14:48 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.4K May 6 14:48 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.1K Mar 28 15:58 LTLCardinality.txt
-rw-r--r-- 1 mcc users 24K Mar 28 15:58 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.0K Mar 28 15:58 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Mar 28 15:58 LTLFireability.xml
-rw-r--r-- 1 mcc users 3.1K Mar 23 08:01 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 15K Mar 23 08:01 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 2.6K Mar 22 15:30 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 15K Mar 22 15:30 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Mar 22 09:10 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K Mar 22 09:10 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 5 16:51 equiv_col
-rw-r--r-- 1 mcc users 4 May 5 16:51 instance
-rw-r--r-- 1 mcc users 6 May 5 16:51 iscolored
-rw-r--r-- 1 mcc users 813K May 5 16:51 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 DLCround-PT-06b-ReachabilityFireability-00
FORMULA_NAME DLCround-PT-06b-ReachabilityFireability-01
FORMULA_NAME DLCround-PT-06b-ReachabilityFireability-02
FORMULA_NAME DLCround-PT-06b-ReachabilityFireability-03
FORMULA_NAME DLCround-PT-06b-ReachabilityFireability-04
FORMULA_NAME DLCround-PT-06b-ReachabilityFireability-05
FORMULA_NAME DLCround-PT-06b-ReachabilityFireability-06
FORMULA_NAME DLCround-PT-06b-ReachabilityFireability-07
FORMULA_NAME DLCround-PT-06b-ReachabilityFireability-08
FORMULA_NAME DLCround-PT-06b-ReachabilityFireability-09
FORMULA_NAME DLCround-PT-06b-ReachabilityFireability-10
FORMULA_NAME DLCround-PT-06b-ReachabilityFireability-11
FORMULA_NAME DLCround-PT-06b-ReachabilityFireability-12
FORMULA_NAME DLCround-PT-06b-ReachabilityFireability-13
FORMULA_NAME DLCround-PT-06b-ReachabilityFireability-14
FORMULA_NAME DLCround-PT-06b-ReachabilityFireability-15

=== Now, execution of the tool begins

BK_START 1620536402032

bash -c /home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n "BK_STOP " ; date -u +%s%3N
[2021-05-09 05:00:03] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityFireability, -z3path, /home/mcc/BenchKit//z3/bin/z3, -yices2path, /home/mcc/BenchKit//yices/bin/yices, -timeout, 3600, -rebuildPNML]
[2021-05-09 05:00:03] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2021-05-09 05:00:03] [INFO ] Load time of PNML (sax parser for PT used): 152 ms
[2021-05-09 05:00:04] [INFO ] Transformed 2340 places.
[2021-05-09 05:00:04] [INFO ] Transformed 3456 transitions.
[2021-05-09 05:00:04] [INFO ] Found NUPN structural information;
[2021-05-09 05:00:04] [INFO ] Parsed PT model containing 2340 places and 3456 transitions in 238 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 108 ms.
Working with output stream class java.io.PrintStream
Incomplete random walk after 10000 steps, including 0 resets, run finished after 116 ms. (steps per millisecond=86 ) properties seen :[1, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0]
FORMULA DLCround-PT-06b-ReachabilityFireability-14 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DLCround-PT-06b-ReachabilityFireability-12 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DLCround-PT-06b-ReachabilityFireability-11 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DLCround-PT-06b-ReachabilityFireability-10 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DLCround-PT-06b-ReachabilityFireability-08 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DLCround-PT-06b-ReachabilityFireability-00 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 41 ms. (steps per millisecond=243 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 21 ms. (steps per millisecond=476 ) properties seen :[0, 1, 0, 0, 0, 0, 0, 0, 0, 0]
FORMULA DLCround-PT-06b-ReachabilityFireability-02 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
Incomplete Best-First random walk after 10000 steps, including 0 resets, run finished after 18 ms. (steps per millisecond=555 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 17 ms. (steps per millisecond=588 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 35 ms. (steps per millisecond=285 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 22 ms. (steps per millisecond=454 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10000 steps, including 0 resets, run finished after 17 ms. (steps per millisecond=588 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 14 ms. (steps per millisecond=714 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 17 ms. (steps per millisecond=588 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 13 ms. (steps per millisecond=769 ) properties seen :[0, 0, 0, 0, 0, 0, 0, 0, 0]
// Phase 1: matrix 3456 rows 2340 cols
[2021-05-09 05:00:04] [INFO ] Computed 109 place invariants in 64 ms
[2021-05-09 05:00:05] [INFO ] [Real]Absence check using 109 positive place invariants in 220 ms returned sat
[2021-05-09 05:00:05] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-09 05:00:09] [INFO ] SMT solver returned unknown. Retrying;
[2021-05-09 05:00:09] [INFO ] [Real]Absence check using state equation in 4405 ms returned (error "Failed to check-sat")
[2021-05-09 05:00:10] [INFO ] [Real]Absence check using 109 positive place invariants in 208 ms returned sat
[2021-05-09 05:00:10] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-09 05:00:14] [INFO ] SMT solver returned unknown. Retrying;
[2021-05-09 05:00:14] [INFO ] [Real]Absence check using state equation in 4302 ms returned (error "Failed to check-sat")
[2021-05-09 05:00:15] [INFO ] [Real]Absence check using 109 positive place invariants in 186 ms returned sat
[2021-05-09 05:00:15] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-09 05:00:19] [INFO ] SMT solver returned unknown. Retrying;
[2021-05-09 05:00:19] [INFO ] [Real]Absence check using state equation in 4483 ms returned (error "Failed to check-sat")
[2021-05-09 05:00:20] [INFO ] [Real]Absence check using 109 positive place invariants in 123 ms returned unsat
[2021-05-09 05:00:20] [INFO ] [Real]Absence check using 109 positive place invariants in 113 ms returned unsat
[2021-05-09 05:00:21] [INFO ] [Real]Absence check using 109 positive place invariants in 217 ms returned sat
[2021-05-09 05:00:21] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-09 05:00:25] [INFO ] SMT solver returned unknown. Retrying;
[2021-05-09 05:00:25] [INFO ] [Real]Absence check using state equation in 4453 ms returned (error "Failed to check-sat")
[2021-05-09 05:00:25] [INFO ] [Real]Absence check using 109 positive place invariants in 183 ms returned sat
[2021-05-09 05:00:25] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-09 05:00:30] [INFO ] SMT solver returned unknown. Retrying;
[2021-05-09 05:00:30] [INFO ] [Real]Absence check using state equation in 4544 ms returned (error "Failed to check-sat")
[2021-05-09 05:00:31] [INFO ] [Real]Absence check using 109 positive place invariants in 221 ms returned sat
[2021-05-09 05:00:31] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-09 05:00:35] [INFO ] SMT solver returned unknown. Retrying;
[2021-05-09 05:00:35] [INFO ] [Real]Absence check using state equation in 4436 ms returned (error "Failed to check-sat")
[2021-05-09 05:00:36] [INFO ] [Real]Absence check using 109 positive place invariants in 207 ms returned sat
[2021-05-09 05:00:36] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-09 05:00:40] [INFO ] SMT solver returned unknown. Retrying;
[2021-05-09 05:00:40] [INFO ] [Real]Absence check using state equation in 4454 ms returned (error "Failed to check-sat")
FORMULA DLCround-PT-06b-ReachabilityFireability-06 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA DLCround-PT-06b-ReachabilityFireability-05 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Support contains 34 out of 2340 places. Attempting structural reductions.
Starting structural reductions, iteration 0 : 2340/2340 places, 3456/3456 transitions.
Graph (trivial) has 2155 edges and 2340 vertex of which 380 / 2340 are part of one of the 27 SCC in 28 ms
Free SCC test removed 353 places
Drop transitions removed 394 transitions
Reduce isomorphic transitions removed 394 transitions.
Performed 897 Post agglomeration using F-continuation condition.Transition count delta: 897
Iterating post reduction 0 with 1291 rules applied. Total rules applied 1292 place count 1987 transition count 2165
Reduce places removed 897 places and 0 transitions.
Ensure Unique test removed 31 transitions
Reduce isomorphic transitions removed 31 transitions.
Performed 24 Post agglomeration using F-continuation condition.Transition count delta: 24
Iterating post reduction 1 with 952 rules applied. Total rules applied 2244 place count 1090 transition count 2110
Reduce places removed 24 places and 0 transitions.
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Performed 3 Post agglomeration using F-continuation condition.Transition count delta: 3
Iterating post reduction 2 with 31 rules applied. Total rules applied 2275 place count 1066 transition count 2103
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 3 with 3 rules applied. Total rules applied 2278 place count 1063 transition count 2103
Performed 14 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 4 with 14 Pre rules applied. Total rules applied 2278 place count 1063 transition count 2089
Deduced a syphon composed of 14 places in 6 ms
Reduce places removed 14 places and 0 transitions.
Iterating global reduction 4 with 28 rules applied. Total rules applied 2306 place count 1049 transition count 2089
Symmetric choice reduction at 4 with 275 rule applications. Total rules 2581 place count 1049 transition count 2089
Deduced a syphon composed of 275 places in 20 ms
Reduce places removed 275 places and 275 transitions.
Iterating global reduction 4 with 550 rules applied. Total rules applied 3131 place count 774 transition count 1814
Performed 111 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 4 with 111 Pre rules applied. Total rules applied 3131 place count 774 transition count 1703
Deduced a syphon composed of 111 places in 17 ms
Reduce places removed 111 places and 0 transitions.
Iterating global reduction 4 with 222 rules applied. Total rules applied 3353 place count 663 transition count 1703
Symmetric choice reduction at 4 with 41 rule applications. Total rules 3394 place count 663 transition count 1703
Deduced a syphon composed of 41 places in 4 ms
Reduce places removed 41 places and 395 transitions.
Iterating global reduction 4 with 82 rules applied. Total rules applied 3476 place count 622 transition count 1308
Ensure Unique test removed 15 transitions
Reduce isomorphic transitions removed 15 transitions.
Iterating post reduction 4 with 15 rules applied. Total rules applied 3491 place count 622 transition count 1293
Performed 165 Post agglomeration using F-continuation condition with reduction of 6 identical transitions.
Deduced a syphon composed of 165 places in 1 ms
Reduce places removed 165 places and 0 transitions.
Iterating global reduction 5 with 330 rules applied. Total rules applied 3821 place count 457 transition count 1122
Ensure Unique test removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 5 with 5 rules applied. Total rules applied 3826 place count 457 transition count 1117
Symmetric choice reduction at 6 with 5 rule applications. Total rules 3831 place count 457 transition count 1117
Deduced a syphon composed of 5 places in 0 ms
Reduce places removed 5 places and 50 transitions.
Iterating global reduction 6 with 10 rules applied. Total rules applied 3841 place count 452 transition count 1067
Performed 45 Post agglomeration using F-continuation condition with reduction of 28 identical transitions.
Deduced a syphon composed of 45 places in 1 ms
Reduce places removed 45 places and 0 transitions.
Iterating global reduction 6 with 90 rules applied. Total rules applied 3931 place count 407 transition count 1444
Drop transitions removed 39 transitions
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 41 transitions.
Iterating post reduction 6 with 41 rules applied. Total rules applied 3972 place count 407 transition count 1403
Free-agglomeration rule applied 197 times with reduction of 105 identical transitions.
Iterating global reduction 7 with 197 rules applied. Total rules applied 4169 place count 407 transition count 1101
Reduce places removed 197 places and 0 transitions.
Drop transitions removed 340 transitions
Ensure Unique test removed 17 transitions
Reduce isomorphic transitions removed 357 transitions.
Iterating post reduction 7 with 554 rules applied. Total rules applied 4723 place count 210 transition count 744
Symmetric choice reduction at 8 with 4 rule applications. Total rules 4727 place count 210 transition count 744
Deduced a syphon composed of 4 places in 0 ms
Reduce places removed 4 places and 34 transitions.
Iterating global reduction 8 with 8 rules applied. Total rules applied 4735 place count 206 transition count 710
Ensure Unique test removed 16 transitions
Reduce isomorphic transitions removed 16 transitions.
Iterating post reduction 8 with 16 rules applied. Total rules applied 4751 place count 206 transition count 694
Free-agglomeration rule applied 2 times.
Iterating global reduction 9 with 2 rules applied. Total rules applied 4753 place count 206 transition count 692
Reduce places removed 2 places and 0 transitions.
Drop transitions removed 10 transitions
Reduce isomorphic transitions removed 10 transitions.
Iterating post reduction 9 with 12 rules applied. Total rules applied 4765 place count 204 transition count 682
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 10 with 1 rules applied. Total rules applied 4766 place count 204 transition count 690
Reduce places removed 1 places and 0 transitions.
Drop transitions removed 10 transitions
Reduce isomorphic transitions removed 10 transitions.
Iterating post reduction 10 with 11 rules applied. Total rules applied 4777 place count 203 transition count 680
Partial Free-agglomeration rule applied 3 times.
Drop transitions removed 3 transitions
Iterating global reduction 11 with 3 rules applied. Total rules applied 4780 place count 203 transition count 680
Drop transitions removed 59 transitions
Redundant transition composition rules discarded 59 transitions
Iterating global reduction 11 with 59 rules applied. Total rules applied 4839 place count 203 transition count 621
Free-agglomeration rule applied 4 times.
Iterating global reduction 11 with 4 rules applied. Total rules applied 4843 place count 203 transition count 617
Reduce places removed 4 places and 0 transitions.
Drop transitions removed 30 transitions
Reduce isomorphic transitions removed 30 transitions.
Iterating post reduction 11 with 34 rules applied. Total rules applied 4877 place count 199 transition count 587
Applied a total of 4877 rules in 664 ms. Remains 199 /2340 variables (removed 2141) and now considering 587/3456 (removed 2869) transitions.
Finished structural reductions, in 1 iterations. Remains : 199/2340 places, 587/3456 transitions.
Incomplete random walk after 1000000 steps, including 0 resets, run finished after 4316 ms. (steps per millisecond=231 ) properties seen :[0, 1, 1, 1, 0, 1, 1]
FORMULA DLCround-PT-06b-ReachabilityFireability-15 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DLCround-PT-06b-ReachabilityFireability-13 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DLCround-PT-06b-ReachabilityFireability-07 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DLCround-PT-06b-ReachabilityFireability-04 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA DLCround-PT-06b-ReachabilityFireability-03 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Finished Best-First random walk after 11300 steps, including 0 resets, run visited all 2 properties in 22 ms. (steps per millisecond=513 )
FORMULA DLCround-PT-06b-ReachabilityFireability-09 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA DLCround-PT-06b-ReachabilityFireability-01 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
All properties solved without resorting to model-checking.

--------------------
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="DLCround-PT-06b"
export BK_EXAMINATION="ReachabilityFireability"
export BK_TOOL="gold2020"
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 gold2020"
echo " Input is DLCround-PT-06b, examination is ReachabilityFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r075-tall-162039097300168"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/DLCround-PT-06b.tgz
mv DLCround-PT-06b execution
cd execution
if [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "UpperBounds" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] || [ "ReachabilityFireability" = "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 [ "ReachabilityFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityFireability" != "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 "ReachabilityFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityFireability.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 '' ReachabilityFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME ReachabilityFireability"
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 ;