Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2026-input.r162-smll-177961107900503.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2026-input.qcow2 backing_fmt=qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
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=====================================================================
Generated by BenchKit 2-5973
Executing tool itstools
Input is LeafsetExtension-PT-S32C2, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r162-smll-177961107900503
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 3.9M
-rw-r--r-- 1 mcc users 11K Mar 7 16:52 CTLCardinality.txt
-rw-r--r-- 1 mcc users 68K Mar 7 16:52 CTLCardinality.xml
-rw-r--r-- 1 mcc users 12K Mar 7 16:52 CTLFireability.txt
-rw-r--r-- 1 mcc users 62K Mar 7 16:52 CTLFireability.xml
-rw-r--r-- 1 mcc users 6.1K Mar 15 11:15 LTLCardinality.txt
-rw-r--r-- 1 mcc users 30K Mar 15 11:15 LTLCardinality.xml
-rw-r--r-- 1 mcc users 4.7K Mar 15 11:15 LTLFireability.txt
-rw-r--r-- 1 mcc users 22K Mar 15 11:15 LTLFireability.xml
-rw-r--r-- 1 mcc users 16K Mar 7 16:52 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 94K Mar 7 16:52 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 21K Mar 7 16:52 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 100K Mar 7 16:52 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 2.2K Mar 15 11:15 UpperBounds.txt
-rw-r--r-- 1 mcc users 4.2K Mar 15 11:15 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 3.4M Mar 3 18:30 model.pnml

--------------------
content from stdout:

=== Data for post analysis generated by BenchKit (invocation template)

The expected result is a vector of booleans
BOOL_VECTOR

echo here is the order used to build the result vector(from xml file)
FORMULA_NAME LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-00
FORMULA_NAME LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-01
FORMULA_NAME LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-02
FORMULA_NAME LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-03
FORMULA_NAME LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-04
FORMULA_NAME LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-05
FORMULA_NAME LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-06
FORMULA_NAME LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-07
FORMULA_NAME LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-08
FORMULA_NAME LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-09
FORMULA_NAME LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-10
FORMULA_NAME LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-11
FORMULA_NAME LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-12
FORMULA_NAME LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-13
FORMULA_NAME LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-14
FORMULA_NAME LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-15

=== Now, execution of the tool begins

BK_START 1779925463885

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=ReachabilityFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=LeafsetExtension-PT-S32C2
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
ReachabilityFireability PT
Running Version 202604301425
[2026-05-27 23:44:26] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityFireability, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2026-05-27 23:44:26] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-27 23:44:27] [INFO ] Load time of PNML (sax parser for PT used): 652 ms
[2026-05-27 23:44:27] [INFO ] Transformed 5622 places.
[2026-05-27 23:44:27] [INFO ] Transformed 5449 transitions.
[2026-05-27 23:44:27] [INFO ] Parsed PT model containing 5622 places and 5449 transitions and 17500 arcs in 940 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 28 ms.
Working with output stream class java.io.PrintStream
RANDOM walk for 40000 steps (2191 resets) in 2509 ms. (15 steps per ms) remains 7/16 properties
FORMULA LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-14 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-13 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-12 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-10 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-09 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-07 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-05 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-02 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-01 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
BEST_FIRST walk for 40004 steps (206 resets) in 1108 ms. (36 steps per ms) remains 7/7 properties
BEST_FIRST walk for 40004 steps (96 resets) in 846 ms. (47 steps per ms) remains 7/7 properties
BEST_FIRST walk for 40003 steps (93 resets) in 230 ms. (173 steps per ms) remains 7/7 properties
BEST_FIRST walk for 40004 steps (182 resets) in 304 ms. (131 steps per ms) remains 7/7 properties
BEST_FIRST walk for 40003 steps (188 resets) in 340 ms. (117 steps per ms) remains 6/7 properties
FORMULA LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-08 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 40003 steps (204 resets) in 521 ms. (76 steps per ms) remains 6/6 properties
[2026-05-27 23:44:29] [INFO ] Flatten gal took : 1108 ms
BEST_FIRST walk for 40004 steps (92 resets) in 855 ms. (46 steps per ms) remains 6/6 properties
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-5557694970057853469.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-3485480508130402556.kers'
[2026-05-27 23:44:29] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-5557694970057853469.kers, --Pflows, --basisKERS=/tmp/petrispot-output-3485480508130402556.kers]
Culling duplicate invariants (modulo rational): removing 36 columns.
Culled 36 columns in 6 ms.
// Phase 1: matrix 5449 rows 5586 cols 15220 entries
[2026-05-27 23:44:29] [INFO ] Flatten gal took : 304 ms
Finished phase 1 with 3287 SingleSign rule and 2162 generalized
[2026-05-27 23:44:29] [INFO ] Computed 173 invariants in 131 ms
Computed 173 P flows in 134 ms.
Exported basis to /tmp/petrispot-output-3485480508130402556.kers
Total runtime 141 ms.
[2026-05-27 23:44:29] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality262471444366224862.gal : 162 ms
[2026-05-27 23:44:29] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality15618279961710474287.prop : 3 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality262471444366224862.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality15618279961710474287.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...328
Excessive predecessor constraint size, skipping predecessor.
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/218 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 6 unsolved
Loading property file /tmp/ReachabilityCardinality15618279961710474287.prop.
Problem LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-04 is UNSAT
FORMULA LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-04 FALSE TECHNIQUES SMT_REFINEMENT
At refinement iteration 1 (OVERLAPS) 5039/5257 variables, 52/52 constraints. Problems are: Problem set: 1 solved, 5 unsolved
Problem LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-00 is UNSAT
FORMULA LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-00 TRUE TECHNIQUES SMT_REFINEMENT
Problem LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-06 is UNSAT
FORMULA LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-06 FALSE TECHNIQUES SMT_REFINEMENT
Problem LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-15 is UNSAT
FORMULA LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-15 FALSE TECHNIQUES SMT_REFINEMENT
At refinement iteration 2 (INCLUDED_ONLY) 0/5257 variables, 22/74 constraints. Problems are: Problem set: 4 solved, 2 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/5257 variables, 0/74 constraints. Problems are: Problem set: 4 solved, 2 unsolved
At refinement iteration 4 (OVERLAPS) 15/5272 variables, 15/89 constraints. Problems are: Problem set: 4 solved, 2 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/5272 variables, 0/89 constraints. Problems are: Problem set: 4 solved, 2 unsolved
Problem LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-03 is UNSAT
FORMULA LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-03 FALSE TECHNIQUES SMT_REFINEMENT
At refinement iteration 6 (OVERLAPS) 347/5619 variables, 82/171 constraints. Problems are: Problem set: 5 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/5619 variables, 0/171 constraints. Problems are: Problem set: 5 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 1/5620 variables, 1/172 constraints. Problems are: Problem set: 5 solved, 1 unsolved
Error getting values : (error "Error writing to Z3 solver: java.io.IOException: Broken pipe")
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 5620/11071 variables, and 172 constraints, problems are : Problem set: 5 solved, 1 unsolved in 5044 ms.
Refiners :[Positive P Invariants (semi-flows): 68/68 constraints, Generalized P Invariants (flows): 104/105 constraints, State Equation: 0/5622 constraints, PredecessorRefiner: 6/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 5 solved, 1 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/48 variables, 0/0 constraints. Problems are: Problem set: 5 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3695/3743 variables, 28/28 constraints. Problems are: Problem set: 5 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/3743 variables, 5/33 constraints. Problems are: Problem set: 5 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/3743 variables, 0/33 constraints. Problems are: Problem set: 5 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 19/3762 variables, 19/52 constraints. Problems are: Problem set: 5 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/3762 variables, 0/52 constraints. Problems are: Problem set: 5 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 1548/5310 variables, 89/141 constraints. Problems are: Problem set: 5 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/5310 variables, 0/141 constraints. Problems are: Problem set: 5 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 300/5610 variables, 21/162 constraints. Problems are: Problem set: 5 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/5610 variables, 0/162 constraints. Problems are: Problem set: 5 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 12/5622 variables, 11/173 constraints. Problems are: Problem set: 5 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/5622 variables, 0/173 constraints. Problems are: Problem set: 5 solved, 1 unsolved
SMT process timed out in 10581ms, After SMT, problems are : Problem set: 5 solved, 1 unsolved
Parikh walk visited 0 properties in 0 ms.
Support contains 48 out of 5622 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 5622/5622 places, 5449/5449 transitions.
Graph (complete) has 11001 edges and 5622 vertex of which 822 are kept as prefixes of interest. Removing 4800 places using SCC suffix rule.23 ms
Discarding 4800 places :
Also discarding 2794 output transitions
Drop transitions (Output transitions of discarded places.) removed 2794 transitions
Drop transitions (Empty/Sink Transition effects.) removed 860 transitions
Reduce isomorphic transitions removed 860 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 167 transitions
Trivial Post-agglo rules discarded 167 transitions
Performed 167 trivial Post agglomeration. Transition count delta: 167
Iterating post reduction 0 with 1027 rules applied. Total rules applied 1028 place count 822 transition count 1628
Reduce places removed 169 places and 0 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 6 transitions
Trivial Post-agglo rules discarded 6 transitions
Performed 6 trivial Post agglomeration. Transition count delta: 6
Iterating post reduction 1 with 175 rules applied. Total rules applied 1203 place count 653 transition count 1622
Reduce places removed 6 places and 0 transitions.
Performed 33 Post agglomeration using F-continuation condition.Transition count delta: 33
Iterating post reduction 2 with 39 rules applied. Total rules applied 1242 place count 647 transition count 1589
Reduce places removed 33 places and 0 transitions.
Iterating post reduction 3 with 33 rules applied. Total rules applied 1275 place count 614 transition count 1589
Performed 13 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 4 with 13 Pre rules applied. Total rules applied 1275 place count 614 transition count 1576
Deduced a syphon composed of 13 places in 1 ms
Reduce places removed 13 places and 0 transitions.
Iterating global reduction 4 with 26 rules applied. Total rules applied 1301 place count 601 transition count 1576
Discarding 210 places :
Symmetric choice reduction at 4 with 210 rule applications. Total rules 1511 place count 391 transition count 1366
Iterating global reduction 4 with 210 rules applied. Total rules applied 1721 place count 391 transition count 1366
Free-agglomeration rule (complex) applied 6 times.
Iterating global reduction 4 with 6 rules applied. Total rules applied 1727 place count 391 transition count 1360
Reduce places removed 6 places and 0 transitions.
Iterating post reduction 4 with 6 rules applied. Total rules applied 1733 place count 385 transition count 1360
Partial Free-agglomeration rule applied 79 times.
Drop transitions (Partial Free agglomeration) removed 79 transitions
Iterating global reduction 5 with 79 rules applied. Total rules applied 1812 place count 385 transition count 1360
Applied a total of 1812 rules in 465 ms. Remains 385 /5622 variables (removed 5237) and now considering 1360/5449 (removed 4089) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 491 ms. Remains : 385/5622 places, 1360/5449 transitions.
RANDOM walk for 40000 steps (4989 resets) in 1150 ms. (34 steps per ms) remains 1/1 properties
BEST_FIRST walk for 30624 steps (237 resets) in 387 ms. (78 steps per ms) remains 0/1 properties
FORMULA LeafsetExtension-PT-S32C2-ReachabilityFireability-2024-11 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
All properties solved without resorting to model-checking.
Total runtime 14841 ms.

BK_STOP 1779925481047

--------------------
content from stderr:

+ export BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ ReachabilityFireability = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution ReachabilityFireability -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202604301425.jar
+ VERSION=202604301425
+ echo 'Running Version 202604301425'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination ReachabilityFireability -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600

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="LeafsetExtension-PT-S32C2"
export BK_EXAMINATION="ReachabilityFireability"
export BK_TOOL="itstools"
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 2-5973"
echo " Executing tool itstools"
echo " Input is LeafsetExtension-PT-S32C2, 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 r162-smll-177961107900503"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/LeafsetExtension-PT-S32C2.tgz
mv LeafsetExtension-PT-S32C2 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.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 ;