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-159033390000439.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 TokenRing-COL-040, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r194-csrt-159033390000439
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 212K
-rw-r--r-- 1 mcc users 3.5K Apr 27 15:14 CTLCardinality.txt
-rw-r--r-- 1 mcc users 19K Apr 27 15:14 CTLCardinality.xml
-rw-r--r-- 1 mcc users 3.3K Apr 27 15:14 CTLFireability.txt
-rw-r--r-- 1 mcc users 21K Apr 27 15:14 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.0K Apr 27 15:14 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.2K Apr 27 15:14 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.7K Apr 27 15:14 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K Apr 28 14:02 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.4K Apr 27 15:14 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Apr 28 14:02 LTLFireability.xml
-rw-r--r-- 1 mcc users 3.6K Apr 27 15:14 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 18K Apr 27 15:14 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 2.7K Apr 27 15:14 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 13K Apr 27 15:14 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Apr 27 15:14 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Apr 27 15:14 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Apr 27 15:14 equiv_pt
-rw-r--r-- 1 mcc users 4 Apr 27 15:14 instance
-rw-r--r-- 1 mcc users 5 Apr 27 15:14 iscolored
-rw-r--r-- 1 mcc users 28K Apr 27 15:14 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 TokenRing-COL-040-ReachabilityFireability-00
FORMULA_NAME TokenRing-COL-040-ReachabilityFireability-01
FORMULA_NAME TokenRing-COL-040-ReachabilityFireability-02
FORMULA_NAME TokenRing-COL-040-ReachabilityFireability-03
FORMULA_NAME TokenRing-COL-040-ReachabilityFireability-04
FORMULA_NAME TokenRing-COL-040-ReachabilityFireability-05
FORMULA_NAME TokenRing-COL-040-ReachabilityFireability-06
FORMULA_NAME TokenRing-COL-040-ReachabilityFireability-07
FORMULA_NAME TokenRing-COL-040-ReachabilityFireability-08
FORMULA_NAME TokenRing-COL-040-ReachabilityFireability-09
FORMULA_NAME TokenRing-COL-040-ReachabilityFireability-10
FORMULA_NAME TokenRing-COL-040-ReachabilityFireability-11
FORMULA_NAME TokenRing-COL-040-ReachabilityFireability-12
FORMULA_NAME TokenRing-COL-040-ReachabilityFireability-13
FORMULA_NAME TokenRing-COL-040-ReachabilityFireability-14
FORMULA_NAME TokenRing-COL-040-ReachabilityFireability-15

=== Now, execution of the tool begins

BK_START 1591221141998

bash -c /home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n "BK_STOP " ; date -u +%s%3N
[2020-06-03 21:52:25] [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]
[2020-06-03 21:52:25] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2020-06-03 21:52:25] [INFO ] Detected file is not PT type :http://www.pnml.org/version-2009/grammar/symmetricnet
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
[2020-06-03 21:52:26] [INFO ] Load time of PNML (colored model parsed with PNMLFW) : 891 ms
[2020-06-03 21:52:26] [INFO ] sort/places :
Couple->state,

[2020-06-03 21:52:26] [INFO ] Imported 1 HL places and 2 HL transitions for a total of 1681 PT places and 68962.0 transition bindings in 91 ms.
[2020-06-03 21:52:26] [INFO ] Computed order based on color domains.
[2020-06-03 21:52:27] [INFO ] Unfolded HLPN to a Petri net with 1681 places and 65641 transitions in 684 ms.
[2020-06-03 21:52:27] [INFO ] Unfolded HLPN properties in 185 ms.
[2020-06-03 21:52:29] [INFO ] Initial state test concluded for 1 properties.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 6092 ms.
Working with output stream class java.io.PrintStream
FORMULA TokenRing-COL-040-ReachabilityFireability-00 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA TokenRing-COL-040-ReachabilityFireability-10 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA TokenRing-COL-040-ReachabilityFireability-11 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA TokenRing-COL-040-ReachabilityFireability-13 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA TokenRing-COL-040-ReachabilityFireability-14 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Interrupted random walk after 2256 steps, including 0 resets, run timeout after 30033 ms. (steps per millisecond=0 ) properties seen :[1, 1, 0, 1, 0, 0, 1, 1, 1, 1, 1]
FORMULA TokenRing-COL-040-ReachabilityFireability-15 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA TokenRing-COL-040-ReachabilityFireability-12 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA TokenRing-COL-040-ReachabilityFireability-09 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA TokenRing-COL-040-ReachabilityFireability-08 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA TokenRing-COL-040-ReachabilityFireability-07 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA TokenRing-COL-040-ReachabilityFireability-04 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA TokenRing-COL-040-ReachabilityFireability-02 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA TokenRing-COL-040-ReachabilityFireability-01 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Interrupted Best-First random walk after 158 steps, including 0 resets, run timeout after 6421 ms. (steps per millisecond=0 ) properties seen :[0, 0, 0]
Interrupted Best-First random walk after 432 steps, including 0 resets, run timeout after 5572 ms. (steps per millisecond=0 ) properties seen :[0, 0, 0]
Interrupted Best-First random walk after 231 steps, including 0 resets, run timeout after 5686 ms. (steps per millisecond=0 ) properties seen :[0, 0, 0]
// Phase 1: matrix 65641 rows 1681 cols
[2020-06-03 21:53:21] [INFO ] Computed 41 place invariants in 362 ms
[2020-06-03 21:53:27] [INFO ] [Real]Absence check using 41 positive place invariants in 2163 ms returned (error "Solver has unexpectedly terminated")
[2020-06-03 21:53:27] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-06-03 21:53:27] [WARNING] SMT solver failed with error :java.lang.RuntimeException: SMT solver raised an error when submitting script. Raised (error "Error writing to Z3 solver: java.io.IOException: Stream closed") while checking expression at index 0
[2020-06-03 21:53:30] [INFO ] [Real]Absence check using 41 positive place invariants in 1634 ms returned sat
[2020-06-03 21:53:30] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-06-03 21:53:32] [WARNING] SMT solver failed with error :java.lang.RuntimeException: SMT solver raised an error when submitting script. Raised (error "Failed to assert expression: java.io.IOException: Broken pipe (>= t21343 0)") while checking expression at index 1
[2020-06-03 21:53:34] [INFO ] [Real]Absence check using 41 positive place invariants in 919 ms returned sat
[2020-06-03 21:53:34] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-06-03 21:53:37] [WARNING] SMT solver failed with error :java.lang.RuntimeException: SMT solver raised an error when submitting script. Raised (error "Failed to assert expression: java.io.IOException: Broken pipe (>= t14642 0)") while checking expression at index 2
Support contains 1681 out of 1681 places. Attempting structural reductions.
Starting structural reductions, iteration 0 : 1681/1681 places, 65641/65641 transitions.
Applied a total of 0 rules in 706 ms. Remains 1681 /1681 variables (removed 0) and now considering 65641/65641 (removed 0) transitions.
Finished structural reductions, in 1 iterations. Remains : 1681/1681 places, 65641/65641 transitions.
Interrupted random walk after 2432 steps, including 0 resets, run timeout after 30023 ms. (steps per millisecond=0 ) properties seen :[0, 0, 0]
Interrupted Best-First random walk after 81 steps, including 0 resets, run timeout after 5572 ms. (steps per millisecond=0 ) properties seen :[0, 0, 0]
Interrupted Best-First random walk after 461 steps, including 0 resets, run timeout after 5200 ms. (steps per millisecond=0 ) properties seen :[0, 0, 0]
Interrupted Best-First random walk after 266 steps, including 0 resets, run timeout after 5340 ms. (steps per millisecond=0 ) properties seen :[0, 0, 0]
Interrupted probabilistic random walk after 23769 steps, run timeout after 30010 ms. (steps per millisecond=0 ) properties seen :[0, 0, 0]
Probabilistic random walk after 23769 steps, saw 2531 distinct states, run finished after 30015 ms. (steps per millisecond=0 ) properties seen :[0, 0, 0]
// Phase 1: matrix 65641 rows 1681 cols
[2020-06-03 21:54:56] [INFO ] Computed 41 place invariants in 159 ms
[2020-06-03 21:55:04] [INFO ] SMT solver returned unknown. Retrying;
[2020-06-03 21:55:07] [INFO ] [Real]Absence check using 41 positive place invariants in 9162 ms returned unknown
[2020-06-03 21:55:09] [INFO ] [Real]Absence check using 41 positive place invariants in 1332 ms returned sat
[2020-06-03 21:55:09] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-06-03 21:55:23] [INFO ] [Real]Absence check using state equation in 13987 ms returned sat
[2020-06-03 21:55:27] [INFO ] State equation strengthened by 64040 read => feed constraints.
[2020-06-03 21:55:48] [INFO ] SMT solver returned unknown. Retrying;
[2020-06-03 21:55:51] [INFO ] [Real]Added 64040 Read/Feed constraints in 24275 ms returned unknown
[2020-06-03 21:55:53] [INFO ] [Real]Absence check using 41 positive place invariants in 922 ms returned sat
[2020-06-03 21:55:53] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-06-03 21:56:07] [INFO ] [Real]Absence check using state equation in 13529 ms returned sat
[2020-06-03 21:56:08] [INFO ] Solution in real domain found non-integer solution.
[2020-06-03 21:56:10] [INFO ] [Nat]Absence check using 41 positive place invariants in 1414 ms returned unsat
FORMULA TokenRing-COL-040-ReachabilityFireability-06 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
This parikh vector is obviously unfeasible : no match in initial state.
Support contains 1681 out of 1681 places. Attempting structural reductions.
Starting structural reductions, iteration 0 : 1681/1681 places, 65641/65641 transitions.
Applied a total of 0 rules in 407 ms. Remains 1681 /1681 variables (removed 0) and now considering 65641/65641 (removed 0) transitions.
Finished structural reductions, in 1 iterations. Remains : 1681/1681 places, 65641/65641 transitions.
Interrupted random walk after 9449 steps, including 0 resets, run timeout after 30022 ms. (steps per millisecond=0 ) properties seen :[0, 0]
Interrupted Best-First random walk after 158 steps, including 0 resets, run timeout after 5984 ms. (steps per millisecond=0 ) properties seen :[0, 0]
Interrupted Best-First random walk after 587 steps, including 0 resets, run timeout after 5020 ms. (steps per millisecond=0 ) properties seen :[0, 0]
Interrupted probabilistic random walk after 51014 steps, run timeout after 30001 ms. (steps per millisecond=1 ) properties seen :[0, 0]
Probabilistic random walk after 51014 steps, saw 9896 distinct states, run finished after 30002 ms. (steps per millisecond=1 ) properties seen :[0, 0]
// Phase 1: matrix 65641 rows 1681 cols
[2020-06-03 21:57:23] [INFO ] Computed 41 place invariants in 128 ms
[2020-06-03 21:57:32] [INFO ] SMT solver returned unknown. Retrying;
[2020-06-03 21:57:35] [INFO ] [Real]Absence check using 41 positive place invariants in 9141 ms returned unknown
[2020-06-03 21:57:37] [INFO ] [Real]Absence check using 41 positive place invariants in 1209 ms returned sat
[2020-06-03 21:57:37] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-06-03 21:57:51] [INFO ] [Real]Absence check using state equation in 14454 ms returned sat
[2020-06-03 21:57:55] [INFO ] State equation strengthened by 64040 read => feed constraints.
[2020-06-03 21:58:14] [INFO ] SMT solver returned unknown. Retrying;
[2020-06-03 21:58:17] [INFO ] [Real]Added 64040 Read/Feed constraints in 22012 ms returned unknown
This parikh vector is obviously unfeasible : no match in initial state.
Support contains 1681 out of 1681 places. Attempting structural reductions.
Starting structural reductions, iteration 0 : 1681/1681 places, 65641/65641 transitions.
Applied a total of 0 rules in 448 ms. Remains 1681 /1681 variables (removed 0) and now considering 65641/65641 (removed 0) transitions.
Finished structural reductions, in 1 iterations. Remains : 1681/1681 places, 65641/65641 transitions.
Starting structural reductions, iteration 0 : 1681/1681 places, 65641/65641 transitions.
Applied a total of 0 rules in 413 ms. Remains 1681 /1681 variables (removed 0) and now considering 65641/65641 (removed 0) transitions.
// Phase 1: matrix 65641 rows 1681 cols
[2020-06-03 21:58:18] [INFO ] Computed 41 place invariants in 388 ms
[2020-06-03 21:58:19] [INFO ] Implicit Places using invariants in 818 ms returned []
Implicit Place search using SMT only with invariants took 822 ms to find 0 implicit places.
// Phase 1: matrix 65641 rows 1681 cols
[2020-06-03 21:58:19] [INFO ] Computed 41 place invariants in 159 ms
[2020-06-03 21:58:49] [INFO ] Performed 5784/65641 'is it Dead' test of which 0 returned DEAD in 30 seconds.
[2020-06-03 21:59:19] [INFO ] Dead Transitions with SMT raised an exceptionSMT solver raised an error when submitting script. Raised (error "Failed to assert expression: java.io.IOException: Broken pipe (and (>= s327 1) (>= s342 1))") after 60214 ms
Finished structural reductions, in 1 iterations. Remains : 1681/1681 places, 65641/65641 transitions.
Interrupted random walk after 9036 steps, including 0 resets, run timeout after 30019 ms. (steps per millisecond=0 ) properties seen :[0, 0]
// Phase 1: matrix 65641 rows 1681 cols
[2020-06-03 21:59:51] [INFO ] Computed 41 place invariants in 143 ms
[2020-06-03 22:00:00] [INFO ] SMT solver returned unknown. Retrying;
[2020-06-03 22:00:03] [INFO ] [Real]Absence check using 41 positive place invariants in 9169 ms returned unknown
[2020-06-03 22:00:05] [INFO ] [Real]Absence check using 41 positive place invariants in 1219 ms returned sat
[2020-06-03 22:00:05] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-06-03 22:00:21] [INFO ] [Real]Absence check using state equation in 16371 ms returned sat
[2020-06-03 22:00:25] [INFO ] State equation strengthened by 64040 read => feed constraints.
[2020-06-03 22:00:25] [WARNING] SMT solver failed with error :java.lang.RuntimeException: SMT solver raised an error when submitting script. Raised (error "Failed to assert expression: java.io.IOException: Stream closed (=> (> t0 0) (or (> t64041 0) (> t64081 0) (> t64121 0) (> t64161 0) (> t64201 0) (> t64241 0) (> t64281 0) (> t64321 0) (> t64361 0) (> t64401 0) (> t64441 0) (> t64481 0) (> t64521 0) (> t64561 0) (> t64601 0) (> t64641 0) (> t64681 0) (> t64721 0) (> t64761 0) (> t64801 0) (> t64841 0) (> t64881 0) (> t64921 0) (> t64961 0) (> t65001 0) (> t65041 0) (> t65081 0) (> t65121 0) (> t65161 0) (> t65201 0) (> t65241 0) (> t65281 0) (> t65321 0) (> t65361 0) (> t65401 0) (> t65441 0) (> t65481 0) (> t65521 0) (> t65561 0) (> t65601 0)))") while checking expression at index 1
Applied a total of 0 rules in 192 ms. Remains 1681 /1681 variables (removed 0) and now considering 65641/65641 (removed 0) transitions.
// Phase 1: matrix 65641 rows 1681 cols
[2020-06-03 22:00:26] [INFO ] Computed 41 place invariants in 238 ms
[2020-06-03 22:00:34] [INFO ] SMT solver returned unknown. Retrying;
[2020-06-03 22:00:37] [INFO ] [Real]Absence check using 41 positive place invariants in 9232 ms returned unknown
[2020-06-03 22:00:39] [INFO ] [Real]Absence check using 41 positive place invariants in 1384 ms returned sat
[2020-06-03 22:00:39] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2020-06-03 22:00:56] [INFO ] [Real]Absence check using state equation in 17050 ms returned sat
[2020-06-03 22:01:05] [INFO ] Computed and/alt/rep : 64040/2560040/64040 causal constraints in 6660 ms.
[2020-06-03 22:01:08] [INFO ] Added : 0 causal constraints over 0 iterations in 9572 ms. Result :sat
[2020-06-03 22:01:16] [INFO ] Export to MCC properties in file /home/mcc/execution/ReachabilityFireability.sr.xml took 801 ms.
[2020-06-03 22:01:16] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml took 329 ms.
[2020-06-03 22:05:53] [INFO ] Flatten gal took : 273587 ms
info: Time: 3600 - MCC
vrfy: Checking ReachabilityFireability @ TokenRing-COL-040 @ 3570 seconds
TIME LIMIT: Killed by timeout after 3600 seconds
MemTotal: 16427332 kB
MemFree: 5595008 kB
After kill :
MemTotal: 16427332 kB
MemFree: 15878520 kB

--------------------
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="TokenRing-COL-040"
export BK_EXAMINATION="ReachabilityFireability"
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 TokenRing-COL-040, 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 r194-csrt-159033390000439"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/TokenRing-COL-040.tgz
mv TokenRing-COL-040 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 ;