Execution Chart

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

Trace from the execution

Formatting '/local/x2003239/mcc2020-input.r194-csrt-159033390200606.qcow2', fmt=qcow2 size=4294967296 backing_file=/local/x2003239/mcc2020-input.qcow2 encryption=off 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 itslola
Input is Vasy2003-PT-none, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r194-csrt-159033390200606
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 392K
-rw-r--r-- 1 mcc users 3.7K Apr 12 20:13 CTLCardinality.txt
-rw-r--r-- 1 mcc users 22K Apr 12 20:13 CTLCardinality.xml
-rw-r--r-- 1 mcc users 2.9K Apr 11 23:34 CTLFireability.txt
-rw-r--r-- 1 mcc users 22K Apr 11 23:34 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K Mar 24 05:38 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.0K Mar 24 05:38 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.3K Apr 15 10:55 LTLCardinality.txt
-rw-r--r-- 1 mcc users 23K Apr 28 14:04 LTLCardinality.xml
-rw-r--r-- 1 mcc users 1.9K Apr 15 10:55 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Apr 28 14:04 LTLFireability.xml
-rw-r--r-- 1 mcc users 3.3K Apr 10 22:21 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 16K Apr 10 22:21 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 2.7K Apr 10 07:38 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 17K Apr 10 07:38 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Apr 10 22:30 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K Apr 10 22:30 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 24 05:38 equiv_col
-rw-r--r-- 1 mcc users 5 Mar 24 05:38 instance
-rw-r--r-- 1 mcc users 6 Mar 24 05:38 iscolored
-rw-r--r-- 1 mcc users 207K Mar 24 05:38 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 Vasy2003-PT-none-ReachabilityCardinality-00
FORMULA_NAME Vasy2003-PT-none-ReachabilityCardinality-01
FORMULA_NAME Vasy2003-PT-none-ReachabilityCardinality-02
FORMULA_NAME Vasy2003-PT-none-ReachabilityCardinality-03
FORMULA_NAME Vasy2003-PT-none-ReachabilityCardinality-04
FORMULA_NAME Vasy2003-PT-none-ReachabilityCardinality-05
FORMULA_NAME Vasy2003-PT-none-ReachabilityCardinality-06
FORMULA_NAME Vasy2003-PT-none-ReachabilityCardinality-07
FORMULA_NAME Vasy2003-PT-none-ReachabilityCardinality-08
FORMULA_NAME Vasy2003-PT-none-ReachabilityCardinality-09
FORMULA_NAME Vasy2003-PT-none-ReachabilityCardinality-10
FORMULA_NAME Vasy2003-PT-none-ReachabilityCardinality-11
FORMULA_NAME Vasy2003-PT-none-ReachabilityCardinality-12
FORMULA_NAME Vasy2003-PT-none-ReachabilityCardinality-13
FORMULA_NAME Vasy2003-PT-none-ReachabilityCardinality-14
FORMULA_NAME Vasy2003-PT-none-ReachabilityCardinality-15

=== Now, execution of the tool begins

BK_START 1591234925165

bash -c /home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n "BK_STOP " ; date -u +%s%3N
[2020-06-04 01:42:07] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityCardinality, -z3path, /home/mcc/BenchKit//z3/bin/z3, -yices2path, /home/mcc/BenchKit//yices/bin/yices, -timeout, 3600, -rebuildPNML]
[2020-06-04 01:42:07] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2020-06-04 01:42:07] [INFO ] Load time of PNML (sax parser for PT used): 111 ms
[2020-06-04 01:42:07] [INFO ] Transformed 485 places.
[2020-06-04 01:42:07] [INFO ] Transformed 776 transitions.
[2020-06-04 01:42:07] [INFO ] Found NUPN structural information;
[2020-06-04 01:42:07] [INFO ] Parsed PT model containing 485 places and 776 transitions in 196 ms.
Ensure Unique test removed 24 transitions
Reduce redundant transitions removed 24 transitions.
Parsed 16 properties from file /home/mcc/execution/ReachabilityCardinality.xml in 60 ms.
Working with output stream class java.io.PrintStream
FORMULA Vasy2003-PT-none-ReachabilityCardinality-02 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Vasy2003-PT-none-ReachabilityCardinality-03 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Vasy2003-PT-none-ReachabilityCardinality-04 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Vasy2003-PT-none-ReachabilityCardinality-07 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Vasy2003-PT-none-ReachabilityCardinality-09 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Vasy2003-PT-none-ReachabilityCardinality-10 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Vasy2003-PT-none-ReachabilityCardinality-11 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Vasy2003-PT-none-ReachabilityCardinality-12 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Vasy2003-PT-none-ReachabilityCardinality-13 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Vasy2003-PT-none-ReachabilityCardinality-15 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Incomplete random walk after 10000 steps, including 0 resets, run finished after 72 ms. (steps per millisecond=138 ) properties seen :[1, 0, 0, 1, 1, 1]
FORMULA Vasy2003-PT-none-ReachabilityCardinality-14 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA Vasy2003-PT-none-ReachabilityCardinality-08 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA Vasy2003-PT-none-ReachabilityCardinality-06 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA Vasy2003-PT-none-ReachabilityCardinality-00 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 24 ms. (steps per millisecond=416 ) properties seen :[0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 18 ms. (steps per millisecond=555 ) properties seen :[0, 0]
[2020-06-04 01:42:08] [INFO ] Flow matrix only has 696 transitions (discarded 56 similar events)
// Phase 1: matrix 696 rows 485 cols
[2020-06-04 01:42:08] [INFO ] Computed 66 place invariants in 62 ms
[2020-06-04 01:42:08] [INFO ] [Real]Absence check using 59 positive place invariants in 83 ms returned sat
[2020-06-04 01:42:08] [INFO ] [Real]Absence check using 59 positive and 7 generalized place invariants in 8 ms returned sat
[2020-06-04 01:42:08] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-06-04 01:42:09] [INFO ] [Real]Absence check using state equation in 1105 ms returned sat
[2020-06-04 01:42:09] [INFO ] Solution in real domain found non-integer solution.
[2020-06-04 01:42:10] [INFO ] [Nat]Absence check using 59 positive place invariants in 52 ms returned sat
[2020-06-04 01:42:10] [INFO ] [Nat]Absence check using 59 positive and 7 generalized place invariants in 7 ms returned sat
[2020-06-04 01:42:10] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2020-06-04 01:42:11] [INFO ] [Nat]Absence check using state equation in 1133 ms returned sat
[2020-06-04 01:42:11] [INFO ] State equation strengthened by 73 read => feed constraints.
[2020-06-04 01:42:11] [INFO ] [Nat]Added 73 Read/Feed constraints in 56 ms returned sat
[2020-06-04 01:42:11] [INFO ] Computed and/alt/rep : 751/5756/695 causal constraints in 123 ms.
[2020-06-04 01:42:14] [INFO ] Added : 265 causal constraints over 53 iterations in 3483 ms. Result :unknown
[2020-06-04 01:42:15] [INFO ] [Real]Absence check using 59 positive place invariants in 71 ms returned unsat
FORMULA Vasy2003-PT-none-ReachabilityCardinality-05 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Incomplete Parikh walk after 262700 steps, including 1000 resets, run finished after 1125 ms. (steps per millisecond=233 ) properties seen :[0] could not realise parikh vector
Support contains 2 out of 485 places. Attempting structural reductions.
Starting structural reductions, iteration 0 : 485/485 places, 752/752 transitions.
Graph (trivial) has 166 edges and 485 vertex of which 4 / 485 are part of one of the 2 SCC in 28 ms
Free SCC test removed 2 places
Discarding 70 places :
Also discarding 55 output transitions
Drop transitions removed 55 transitions
Graph (complete) has 1555 edges and 483 vertex of which 413 are kept as prefixes of interest. Removing 70 places using SCC suffix rule.32 ms
Drop transitions removed 27 transitions
Reduce isomorphic transitions removed 27 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 0 with 28 rules applied. Total rules applied 30 place count 413 transition count 669
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 1 with 1 rules applied. Total rules applied 31 place count 412 transition count 669
Performed 17 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 17 Pre rules applied. Total rules applied 31 place count 412 transition count 652
Deduced a syphon composed of 17 places in 18 ms
Reduce places removed 17 places and 0 transitions.
Iterating global reduction 2 with 34 rules applied. Total rules applied 65 place count 395 transition count 652
Symmetric choice reduction at 2 with 134 rule applications. Total rules 199 place count 395 transition count 652
Deduced a syphon composed of 134 places in 2 ms
Reduce places removed 134 places and 134 transitions.
Iterating global reduction 2 with 268 rules applied. Total rules applied 467 place count 261 transition count 518
Ensure Unique test removed 1 places
Ensure Unique test removed 31 transitions
Reduce isomorphic transitions removed 31 transitions.
Iterating post reduction 2 with 32 rules applied. Total rules applied 499 place count 260 transition count 487
Symmetric choice reduction at 3 with 100 rule applications. Total rules 599 place count 260 transition count 487
Deduced a syphon composed of 100 places in 1 ms
Reduce places removed 100 places and 125 transitions.
Iterating global reduction 3 with 200 rules applied. Total rules applied 799 place count 160 transition count 362
Ensure Unique test removed 71 transitions
Reduce isomorphic transitions removed 71 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 3 with 72 rules applied. Total rules applied 871 place count 160 transition count 290
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 4 with 1 rules applied. Total rules applied 872 place count 159 transition count 290
Symmetric choice reduction at 5 with 43 rule applications. Total rules 915 place count 159 transition count 290
Deduced a syphon composed of 43 places in 1 ms
Reduce places removed 43 places and 77 transitions.
Iterating global reduction 5 with 86 rules applied. Total rules applied 1001 place count 116 transition count 213
Ensure Unique test removed 40 transitions
Reduce isomorphic transitions removed 40 transitions.
Iterating post reduction 5 with 40 rules applied. Total rules applied 1041 place count 116 transition count 173
Symmetric choice reduction at 6 with 3 rule applications. Total rules 1044 place count 116 transition count 173
Deduced a syphon composed of 3 places in 0 ms
Reduce places removed 3 places and 18 transitions.
Iterating global reduction 6 with 6 rules applied. Total rules applied 1050 place count 113 transition count 155
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 6 with 1 rules applied. Total rules applied 1051 place count 113 transition count 154
Symmetric choice reduction at 7 with 2 rule applications. Total rules 1053 place count 113 transition count 154
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 3 transitions.
Iterating global reduction 7 with 4 rules applied. Total rules applied 1057 place count 111 transition count 151
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 7 with 2 rules applied. Total rules applied 1059 place count 111 transition count 149
Symmetric choice reduction at 8 with 1 rule applications. Total rules 1060 place count 111 transition count 149
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 2 transitions.
Iterating global reduction 8 with 2 rules applied. Total rules applied 1062 place count 110 transition count 147
Performed 7 Post agglomeration using F-continuation condition.Transition count delta: 7
Deduced a syphon composed of 7 places in 0 ms
Reduce places removed 7 places and 0 transitions.
Iterating global reduction 8 with 14 rules applied. Total rules applied 1076 place count 103 transition count 140
Free-agglomeration rule applied 1 times.
Iterating global reduction 8 with 1 rules applied. Total rules applied 1077 place count 103 transition count 139
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 8 with 1 rules applied. Total rules applied 1078 place count 102 transition count 139
Partial Post-agglomeration rule applied 4 times.
Drop transitions removed 4 transitions
Iterating global reduction 9 with 4 rules applied. Total rules applied 1082 place count 102 transition count 139
Drop transitions removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 9 with 2 rules applied. Total rules applied 1084 place count 102 transition count 137
Drop transitions removed 4 transitions
Redundant transition composition rules discarded 4 transitions
Iterating global reduction 10 with 4 rules applied. Total rules applied 1088 place count 102 transition count 133
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 10 with 1 rules applied. Total rules applied 1089 place count 101 transition count 132
Reduce places removed 8 places and 0 transitions.
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 10 with 12 rules applied. Total rules applied 1101 place count 93 transition count 128
Performed 5 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 11 with 5 Pre rules applied. Total rules applied 1101 place count 93 transition count 123
Deduced a syphon composed of 5 places in 0 ms
Reduce places removed 10 places and 0 transitions.
Iterating global reduction 11 with 15 rules applied. Total rules applied 1116 place count 83 transition count 123
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Iterating post reduction 11 with 3 rules applied. Total rules applied 1119 place count 83 transition count 120
Performed 2 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 12 with 2 Pre rules applied. Total rules applied 1119 place count 83 transition count 118
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 3 places and 0 transitions.
Iterating global reduction 12 with 5 rules applied. Total rules applied 1124 place count 80 transition count 118
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 12 with 1 Pre rules applied. Total rules applied 1124 place count 80 transition count 117
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 12 with 3 rules applied. Total rules applied 1127 place count 78 transition count 117
Drop transitions removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 12 with 1 rules applied. Total rules applied 1128 place count 78 transition count 116
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 4 places and 0 transitions.
Iterating global reduction 13 with 6 rules applied. Total rules applied 1134 place count 74 transition count 114
Symmetric choice reduction at 13 with 1 rule applications. Total rules 1135 place count 74 transition count 114
Deduced a syphon composed of 1 places in 1 ms
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 13 with 2 rules applied. Total rules applied 1137 place count 73 transition count 113
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 13 with 4 rules applied. Total rules applied 1141 place count 71 transition count 111
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 13 with 4 rules applied. Total rules applied 1145 place count 71 transition count 107
Symmetric choice reduction at 14 with 1 rule applications. Total rules 1146 place count 71 transition count 107
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 2 transitions.
Iterating global reduction 14 with 2 rules applied. Total rules applied 1148 place count 70 transition count 105
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 14 with 2 rules applied. Total rules applied 1150 place count 70 transition count 103
Free-agglomeration rule applied 7 times.
Iterating global reduction 15 with 7 rules applied. Total rules applied 1157 place count 70 transition count 96
Reduce places removed 8 places and 0 transitions.
Drop transitions removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 15 with 10 rules applied. Total rules applied 1167 place count 62 transition count 94
Free-agglomeration rule (complex) applied 2 times.
Iterating global reduction 16 with 2 rules applied. Total rules applied 1169 place count 62 transition count 96
Reduce places removed 2 places and 0 transitions.
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 16 with 6 rules applied. Total rules applied 1175 place count 60 transition count 92
Partial Free-agglomeration rule applied 1 times.
Drop transitions removed 1 transitions
Iterating global reduction 17 with 1 rules applied. Total rules applied 1176 place count 60 transition count 92
Drop transitions removed 2 transitions
Redundant transition composition rules discarded 2 transitions
Iterating global reduction 17 with 2 rules applied. Total rules applied 1178 place count 60 transition count 90
Applied a total of 1178 rules in 262 ms. Remains 60 /485 variables (removed 425) and now considering 90/752 (removed 662) transitions.
Finished structural reductions, in 1 iterations. Remains : 60/485 places, 90/752 transitions.
Finished random walk after 8184 steps, including 0 resets, run visited all 1 properties in 67 ms. (steps per millisecond=122 )
FORMULA Vasy2003-PT-none-ReachabilityCardinality-01 TRUE TECHNIQUES TOPOLOGICAL RANDOM_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="Vasy2003-PT-none"
export BK_EXAMINATION="ReachabilityCardinality"
export BK_TOOL="itslola"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"

# 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 itslola"
echo " Input is Vasy2003-PT-none, 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 r194-csrt-159033390200606"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/Vasy2003-PT-none.tgz
mv Vasy2003-PT-none 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 ;