fond
Model Checking Contest 2021
11th edition, Paris, France, June 23, 2021
Execution of r170-oct2-162089287200174
Last Updated
Jun 28, 2021

About the Execution of 2020-gold for PolyORBLF-PT-S06J06T06

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
5330.403 3600000.00 3678337.00 1149.30 FTF?????F??????F normal

Execution Chart

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

Trace from the execution

Formatting '/data/fko/mcc2021-input.r170-oct2-162089287200174.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fko/mcc2021-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 gold2020
Input is PolyORBLF-PT-S06J06T06, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r170-oct2-162089287200174
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 25M
-rw-r--r-- 1 mcc users 97K May 5 16:58 CTLCardinality.txt
-rw-r--r-- 1 mcc users 410K May 10 09:43 CTLCardinality.xml
-rw-r--r-- 1 mcc users 1.9M May 5 16:58 CTLFireability.txt
-rw-r--r-- 1 mcc users 7.6M May 10 09:43 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 6 14:48 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.3K May 6 14:48 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 7.4K Mar 28 16:27 LTLCardinality.txt
-rw-r--r-- 1 mcc users 32K Mar 28 16:27 LTLCardinality.xml
-rw-r--r-- 1 mcc users 7.2K Mar 28 16:27 LTLFireability.txt
-rw-r--r-- 1 mcc users 36K Mar 28 16:27 LTLFireability.xml
-rw-r--r-- 1 mcc users 5.7K Mar 27 09:29 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 18K Mar 27 09:29 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 29K Mar 25 12:13 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 91K Mar 25 12:13 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 2.6K Mar 22 09:17 UpperBounds.txt
-rw-r--r-- 1 mcc users 5.6K Mar 22 09:17 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 May 5 16:51 equiv_col
-rw-r--r-- 1 mcc users 10 May 5 16:51 instance
-rw-r--r-- 1 mcc users 6 May 5 16:51 iscolored
-rw-r--r-- 1 mcc users 15M 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 PolyORBLF-PT-S06J06T06-00
FORMULA_NAME PolyORBLF-PT-S06J06T06-01
FORMULA_NAME PolyORBLF-PT-S06J06T06-02
FORMULA_NAME PolyORBLF-PT-S06J06T06-03
FORMULA_NAME PolyORBLF-PT-S06J06T06-04
FORMULA_NAME PolyORBLF-PT-S06J06T06-05
FORMULA_NAME PolyORBLF-PT-S06J06T06-06
FORMULA_NAME PolyORBLF-PT-S06J06T06-07
FORMULA_NAME PolyORBLF-PT-S06J06T06-08
FORMULA_NAME PolyORBLF-PT-S06J06T06-09
FORMULA_NAME PolyORBLF-PT-S06J06T06-10
FORMULA_NAME PolyORBLF-PT-S06J06T06-11
FORMULA_NAME PolyORBLF-PT-S06J06T06-12
FORMULA_NAME PolyORBLF-PT-S06J06T06-13
FORMULA_NAME PolyORBLF-PT-S06J06T06-14
FORMULA_NAME PolyORBLF-PT-S06J06T06-15

=== Now, execution of the tool begins

BK_START 1621383879583

bash -c /home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n "BK_STOP " ; date -u +%s%3N
[2021-05-19 00:24:42] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, LTLFireability, -z3path, /home/mcc/BenchKit//z3/bin/z3, -yices2path, /home/mcc/BenchKit//yices/bin/yices, -timeout, 3600, -rebuildPNML]
[2021-05-19 00:24:42] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2021-05-19 00:24:43] [INFO ] Load time of PNML (sax parser for PT used): 837 ms
[2021-05-19 00:24:43] [INFO ] Transformed 700 places.
[2021-05-19 00:24:43] [INFO ] Transformed 10740 transitions.
[2021-05-19 00:24:43] [INFO ] Parsed PT model containing 700 places and 10740 transitions in 1025 ms.
Ensure Unique test removed 8070 transitions
Reduce redundant transitions removed 8070 transitions.
Parsed 16 properties from file /home/mcc/execution/LTLFireability.xml in 519 ms.
Working with output stream class java.io.PrintStream
Incomplete random walk after 100001 steps, including 551 resets, run finished after 1168 ms. (steps per millisecond=85 ) properties seen :[0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2021-05-19 00:24:45] [INFO ] Flow matrix only has 2634 transitions (discarded 36 similar events)
// Phase 1: matrix 2634 rows 700 cols
[2021-05-19 00:24:45] [INFO ] Computed 58 place invariants in 202 ms
[2021-05-19 00:24:46] [INFO ] [Real]Absence check using 22 positive place invariants in 168 ms returned sat
[2021-05-19 00:24:46] [INFO ] [Real]Absence check using 22 positive and 36 generalized place invariants in 118 ms returned unsat
[2021-05-19 00:24:47] [INFO ] [Real]Absence check using 22 positive place invariants in 42 ms returned sat
[2021-05-19 00:24:47] [INFO ] [Real]Absence check using 22 positive and 36 generalized place invariants in 221 ms returned unsat
[2021-05-19 00:24:47] [INFO ] [Real]Absence check using 22 positive place invariants in 32 ms returned sat
[2021-05-19 00:24:47] [INFO ] [Real]Absence check using 22 positive and 36 generalized place invariants in 71 ms returned sat
[2021-05-19 00:24:47] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-19 00:24:54] [INFO ] [Real]Absence check using state equation in 6644 ms returned sat
[2021-05-19 00:24:54] [INFO ] Solution in real domain found non-integer solution.
[2021-05-19 00:24:54] [INFO ] [Nat]Absence check using 22 positive place invariants in 37 ms returned sat
[2021-05-19 00:24:54] [INFO ] [Nat]Absence check using 22 positive and 36 generalized place invariants in 61 ms returned sat
[2021-05-19 00:24:54] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2021-05-19 00:25:06] [INFO ] [Nat]Absence check using state equation in 12121 ms returned sat
[2021-05-19 00:25:06] [INFO ] State equation strengthened by 174 read => feed constraints.
[2021-05-19 00:25:09] [INFO ] SMT solver returned unknown. Retrying;
[2021-05-19 00:25:12] [INFO ] [Nat]Added 174 Read/Feed constraints in 5234 ms returned sat
[2021-05-19 00:25:12] [INFO ] Deduced a trap composed of 93 places in 515 ms
[2021-05-19 00:25:13] [INFO ] Deduced a trap composed of 93 places in 211 ms
[2021-05-19 00:25:16] [INFO ] Deduced a trap composed of 2 places in 2511 ms
[2021-05-19 00:25:16] [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 (> (+ s294 s505) 0)") while checking expression at index 2
[2021-05-19 00:25:17] [INFO ] [Real]Absence check using 22 positive place invariants in 34 ms returned sat
[2021-05-19 00:25:17] [INFO ] [Real]Absence check using 22 positive and 36 generalized place invariants in 137 ms returned sat
[2021-05-19 00:25:17] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-19 00:25:22] [INFO ] [Real]Absence check using state equation in 5030 ms returned sat
[2021-05-19 00:25:22] [INFO ] Solution in real domain found non-integer solution.
[2021-05-19 00:25:22] [INFO ] [Nat]Absence check using 22 positive place invariants in 19 ms returned sat
[2021-05-19 00:25:22] [INFO ] [Nat]Absence check using 22 positive and 36 generalized place invariants in 69 ms returned sat
[2021-05-19 00:25:22] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2021-05-19 00:25:34] [INFO ] [Nat]Absence check using state equation in 12284 ms returned sat
[2021-05-19 00:25:37] [INFO ] [Nat]Added 174 Read/Feed constraints in 2197 ms returned sat
[2021-05-19 00:25:37] [INFO ] Computed and/alt/rep : 2664/49032/2628 causal constraints in 439 ms.
[2021-05-19 00:25:42] [INFO ] Added : 35 causal constraints over 7 iterations in 5256 ms. Result :unknown
Successfully simplified 2 atomic propositions for a total of 2 simplifications.
[2021-05-19 00:25:42] [INFO ] Initial state reduction rules for CTL removed 5 formulas.
[2021-05-19 00:25:42] [INFO ] Flatten gal took : 295 ms
FORMULA PolyORBLF-PT-S06J06T06-15 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA PolyORBLF-PT-S06J06T06-08 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA PolyORBLF-PT-S06J06T06-02 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA PolyORBLF-PT-S06J06T06-01 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA PolyORBLF-PT-S06J06T06-00 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2021-05-19 00:25:43] [INFO ] Flatten gal took : 150 ms
[2021-05-19 00:25:43] [INFO ] Export to MCC properties in file /home/mcc/execution/LTLFireability.sr.xml took 18 ms.
[2021-05-19 00:25:43] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml took 20 ms.
info: Time: 3600 - MCC
vrfy: Checking LTLFireability @ PolyORBLF-PT-S06J06T06 @ 3570 seconds
check_solution: Constraint R8 = 2.12199579146e-314 is above its equality of -9
check_solution: Constraint R10 = 2.12199579146e-314 is above its equality of -1
check_solution: Constraint R19 = 0 is above its equality of -1
check_solution: Constraint R49 = 0 is above its equality of -1
check_solution: Constraint R58 = 2.12199579146e-314 is above its equality of -1
check_solution: Constraint R107 = 0 is above its equality of -10
check_solution: Constraint R113 = 0 is above its equality of -1
check_solution: Constraint R134 = 2.12199579146e-314 is above its equality of -1
check_solution: Constraint R157 = 0 is above its equality of -1
check_solution: Constraint R174 = 2.12199579146e-314 is above its equality of -1

Seriously low accuracy found ||*|| = 11.5 (rel. error 5.75)
check_solution: Variable C1908 = -1.4055223465 is below its lower bound 0
check_solution: Variable C2964 = -0.329906702042 is below its lower bound 0
check_solution: Variable C3316 = -0.0593018829823 is below its lower bound 0
check_solution: Constraint R8 = 2.12199579146e-314 is above its equality of -9
check_solution: Constraint R10 = 2.12199579146e-314 is above its equality of -1
check_solution: Constraint R19 = 0 is above its equality of -1
check_solution: Constraint R49 = 0 is above its equality of -1
check_solution: Constraint R58 = 2.12199579146e-314 is above its equality of -1
check_solution: Constraint R107 = 0 is above its equality of -10
check_solution: Constraint R113 = 0 is above its equality of -1

Seriously low accuracy found ||*|| = 10 (rel. error 1.40552)
check_solution: Variable C1 = -1 is below its lower bound 0
check_solution: Variable C2 = -1 is below its lower bound 0
check_solution: Variable C3 = -1 is below its lower bound 0
check_solution: Variable C4 = -1 is below its lower bound 0
check_solution: Variable C5 = -1 is below its lower bound 0
check_solution: Variable C6 = -1 is below its lower bound 0
check_solution: Variable C7 = -2 is below its lower bound 0
check_solution: Variable C8 = -2 is below its lower bound 0
check_solution: Variable C9 = -2 is below its lower bound 0
check_solution: Variable C10 = -1 is below its lower bound 0

Seriously low accuracy found ||*|| = 11 (rel. error 4)
check_solution: Variable C886 = -0.52676820755 is below its lower bound 0
check_solution: Variable C1238 = -0.209182739258 is below its lower bound 0
check_solution: Variable C1590 = -0.104369044304 is below its lower bound 0
check_solution: Variable C2646 = -0.00738722458482 is below its lower bound 0
check_solution: Constraint R8 = 7.64555083681e-311 is above its equality of -9
check_solution: Constraint R10 = 4.74478258962e-311 is above its equality of -1
check_solution: Constraint R19 = 3.43975517817e-311 is above its equality of -1
check_solution: Constraint R49 = 5.68482672469e-311 is above its equality of -1
check_solution: Constraint R58 = 2.80952242913e-311 is above its equality of -1
check_solution: Constraint R107 = 3.70288265632e-311 is above its equality of -10

Seriously low accuracy found ||*|| = 10 (rel. error 3.64144)
check_solution: Variable C2 = -0.463959932327 is below its lower bound 0
check_solution: Variable C354 = -0.0563168227673 is below its lower bound 0
check_solution: Variable C1410 = -0.360820770264 is below its lower bound 0
check_solution: Variable C1762 = -0.226065635681 is below its lower bound 0
check_solution: Variable C2114 = -0.429178953171 is below its lower bound 0
check_solution: Variable C2466 = -0.060415416956 is below its lower bound 0
check_solution: Variable C2818 = -0.751619815827 is below its lower bound 0
check_solution: Constraint R8 = 7.79196854593e-311 is above its equality of -9
check_solution: Constraint R10 = 4.9060542696e-311 is above its equality of -1
check_solution: Constraint R19 = 7.77287058291e-311 is above its equality of -1

Seriously low accuracy found ||*|| = 10 (rel. error 873.88)
check_solution: Variable C4 = -1 is below its lower bound 0
check_solution: Variable C38 = -1 is below its lower bound 0
check_solution: Variable C82 = -1 is below its lower bound 0
check_solution: Variable C90 = -1 is below its lower bound 0
check_solution: Variable C97 = -1 is below its lower bound 0
check_solution: Variable C114 = -1 is below its lower bound 0
check_solution: Variable C118 = -1 is below its lower bound 0
check_solution: Variable C119 = -1 is below its lower bound 0
check_solution: Variable C121 = -1 is below its lower bound 0
check_solution: Variable C122 = -1 is below its lower bound 0

Seriously low accuracy found ||*|| = 11 (rel. error 9)
check_solution: Variable C2 = -0.60882806778 is below its lower bound 0
check_solution: Variable C354 = -0.400805950165 is below its lower bound 0
check_solution: Variable C1058 = -0.0974319577218 is below its lower bound 0
check_solution: Variable C2114 = -0.236874580383 is below its lower bound 0
check_solution: Variable C2472 = -2.71481510183 is below its lower bound 0
check_solution: Variable C2473 = -1.05809788033 is below its lower bound 0
check_solution: Variable C2474 = -1.86199780055 is below its lower bound 0
check_solution: Variable C2475 = -2.72711679061 is below its lower bound 0
check_solution: Variable C2477 = -1.18756965209 is below its lower bound 0
check_solution: Variable C2479 = -1.48818143607 is below its lower bound 0

Seriously low accuracy found ||*|| = 10.0158 (rel. error 10.0158)
check_solution: Variable C1660 = -0.451552629471 is below its lower bound 0
check_solution: Variable C2364 = -0.563512802124 is below its lower bound 0
check_solution: Variable C2716 = -0.19349360466 is below its lower bound 0
check_solution: Variable C3068 = -0.696563243866 is below its lower bound 0
check_solution: Constraint R8 = 2.12199579146e-314 is above its equality of -9
check_solution: Constraint R10 = 2.12199579146e-314 is above its equality of -1
check_solution: Constraint R19 = 0 is above its equality of -1
check_solution: Constraint R49 = 0 is above its equality of -1
check_solution: Constraint R58 = 2.12199579146e-314 is above its equality of -1
check_solution: Constraint R107 = 0 is above its equality of -10

Seriously low accuracy found ||*|| = 10 (rel. error 1)
check_solution: Variable C590 = -0.804844856263 is below its lower bound 0
check_solution: Variable C1998 = -4.15264129639 is below its lower bound 0
check_solution: Variable C2702 = -0.580175399781 is below its lower bound 0
check_solution: Variable C3054 = -0.291374206543 is below its lower bound 0
check_solution: Constraint R8 = 5.11613185367e-311 is above its equality of -9
check_solution: Constraint R10 = 6.01161407731e-311 is above its equality of -1
check_solution: Constraint R19 = 6.18986172303e-311 is above its equality of -1
check_solution: Constraint R49 = 4.86361435424e-311 is above its equality of -1
check_solution: Constraint R58 = 8.18241577196e-311 is above its equality of -1
check_solution: Constraint R107 = 5.59570290222e-311 is above its equality of -10

Seriously low accuracy found ||*|| = 10 (rel. error 7.14533)
check_solution: Variable C2154 = -1 is below its lower bound 0
check_solution: Variable C2156 = -1 is below its lower bound 0
check_solution: Variable C2157 = -1 is below its lower bound 0
check_solution: Variable C2164 = -1 is below its lower bound 0
check_solution: Variable C2165 = -1 is below its lower bound 0
check_solution: Variable C2166 = -1 is below its lower bound 0
check_solution: Variable C2168 = -1 is below its lower bound 0
check_solution: Variable C2171 = -1 is below its lower bound 0
check_solution: Variable C2173 = -1 is below its lower bound 0
check_solution: Variable C2174 = -1 is below its lower bound 0

Seriously low accuracy found ||*|| = 10 (rel. error 3)
check_solution: Variable C203 = -1 is below its lower bound 0
check_solution: Variable C204 = -3 is below its lower bound 0
check_solution: Variable C205 = -3 is below its lower bound 0
check_solution: Variable C206 = -2 is below its lower bound 0
check_solution: Variable C207 = -1 is below its lower bound 0
check_solution: Variable C208 = -1 is below its lower bound 0
check_solution: Variable C209 = -1 is below its lower bound 0
check_solution: Variable C210 = -2 is below its lower bound 0
check_solution: Variable C211 = -1 is below its lower bound 0
check_solution: Variable C212 = -1 is below its lower bound 0

Seriously low accuracy found ||*|| = 11 (rel. error 4)
check_solution: Variable C238 = -0.00541096925736 is below its lower bound 0
check_solution: Variable C590 = -0.568764686585 is below its lower bound 0
check_solution: Variable C942 = -0.115027427673 is below its lower bound 0
check_solution: Variable C1294 = -0.182610273361 is below its lower bound 0
check_solution: Variable C1998 = -0.804844856263 is below its lower bound 0
check_solution: Constraint R8 = 7.44183923971e-311 is above its equality of -9
check_solution: Constraint R10 = 6.01161407731e-311 is above its equality of -1
check_solution: Constraint R19 = 8.55800902575e-311 is above its equality of -1
check_solution: Constraint R49 = 4.86361435424e-311 is above its equality of -1
check_solution: Constraint R58 = 3.20633564215e-311 is above its equality of -1

TIME LIMIT: Killed by timeout after 3600 seconds
MemTotal: 16427364 kB
MemFree: 10844432 kB
After kill :
MemTotal: 16427364 kB
MemFree: 16113480 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="PolyORBLF-PT-S06J06T06"
export BK_EXAMINATION="LTLFireability"
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 PolyORBLF-PT-S06J06T06, examination is LTLFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r170-oct2-162089287200174"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/PolyORBLF-PT-S06J06T06.tgz
mv PolyORBLF-PT-S06J06T06 execution
cd execution
if [ "LTLFireability" = "ReachabilityDeadlock" ] || [ "LTLFireability" = "UpperBounds" ] || [ "LTLFireability" = "QuasiLiveness" ] || [ "LTLFireability" = "StableMarking" ] || [ "LTLFireability" = "Liveness" ] || [ "LTLFireability" = "OneSafe" ] || [ "LTLFireability" = "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 [ "LTLFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "LTLFireability" != "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 "LTLFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property LTLFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "LTLFireability.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 '' LTLFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "LTLFireability" = "ReachabilityDeadlock" ] || [ "LTLFireability" = "QuasiLiveness" ] || [ "LTLFireability" = "StableMarking" ] || [ "LTLFireability" = "Liveness" ] || [ "LTLFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME LTLFireability"
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 ;