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Model Checking Contest 2026
16th edition, Hamburg, Germany, June 23, 2026
Execution of r192-oct2-177969025800132
Last Updated
Jun 17, 2026

About the Execution of 2025-gold for MedleyA-PT-15

Execution Summary
Max Memory
Used (MB)		 Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
0.000 6399.00 0.00 0.00 T normal

Execution Chart

Sorry, for this execution, no execution chart could be reported.

Trace from the execution

Formatting '/data/fkordon/mcc2026-input.r192-oct2-177969025800132.qcow2', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=4294967296 backing_file=/data/fkordon/mcc2026-input.qcow2 backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
........................
=====================================================================
Generated by BenchKit 2-5348
Executing tool gold2025
Input is MedleyA-PT-15, examination is QuasiLiveness
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r192-oct2-177969025800132
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 568K
-rw-r--r-- 1 mcc users 6.7K Mar 7 18:20 CTLCardinality.txt
-rw-r--r-- 1 mcc users 74K Mar 7 18:20 CTLCardinality.xml
-rw-r--r-- 1 mcc users 7.8K Mar 7 18:20 CTLFireability.txt
-rw-r--r-- 1 mcc users 83K Mar 7 18:20 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.4K Mar 15 11:29 LTLCardinality.txt
-rw-r--r-- 1 mcc users 23K Mar 15 11:29 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.2K Mar 15 11:29 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K Mar 15 11:29 LTLFireability.xml
-rw-r--r-- 1 mcc users 11K Mar 7 18:20 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 108K Mar 7 18:20 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 8.6K Mar 7 18:20 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 75K Mar 7 18:20 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Mar 15 11:29 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K Mar 15 11:29 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 3 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 110K 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

FORMULA_NAME QuasiLiveness

=== Now, execution of the tool begins

BK_START 1780576827943

Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=QuasiLiveness
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=MedleyA-PT-15
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
QuasiLiveness PT
Running Version 202505121319
[2026-06-04 12:40:29] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, QuasiLiveness, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 1800]
[2026-06-04 12:40:29] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-06-04 12:40:30] [INFO ] Load time of PNML (sax parser for PT used): 196 ms
[2026-06-04 12:40:30] [INFO ] Transformed 192 places.
[2026-06-04 12:40:30] [INFO ] Transformed 475 transitions.
[2026-06-04 12:40:30] [INFO ] Found NUPN structural information;
[2026-06-04 12:40:30] [INFO ] Parsed PT model containing 192 places and 475 transitions and 1522 arcs in 368 ms.
Starting structural reductions in LIVENESS mode, iteration 0 : 192/192 places, 475/475 transitions.
Graph (trivial) has 227 edges and 192 vertex of which 9 / 192 are part of one of the 3 SCC in 5 ms
Free SCC test removed 6 places
Ensure Unique test removed 8 transitions
Reduce isomorphic transitions removed 8 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 29 transitions
Trivial Post-agglo rules discarded 29 transitions
Performed 29 trivial Post agglomeration. Transition count delta: 29
Iterating post reduction 0 with 29 rules applied. Total rules applied 30 place count 186 transition count 438
Reduce places removed 29 places and 0 transitions.
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 1 with 31 rules applied. Total rules applied 61 place count 157 transition count 436
Performed 6 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 6 Pre rules applied. Total rules applied 61 place count 157 transition count 430
Deduced a syphon composed of 6 places in 7 ms
Reduce places removed 6 places and 0 transitions.
Iterating global reduction 2 with 12 rules applied. Total rules applied 73 place count 151 transition count 430
Performed 37 Post agglomeration using F-continuation condition.Transition count delta: 37
Deduced a syphon composed of 37 places in 13 ms
Reduce places removed 37 places and 0 transitions.
Iterating global reduction 2 with 74 rules applied. Total rules applied 147 place count 114 transition count 393
Ensure Unique test removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 2 with 5 rules applied. Total rules applied 152 place count 114 transition count 388
Performed 43 Post agglomeration using F-continuation condition with reduction of 20 identical transitions.
Deduced a syphon composed of 43 places in 1 ms
Reduce places removed 43 places and 0 transitions.
Iterating global reduction 3 with 86 rules applied. Total rules applied 238 place count 71 transition count 601
Ensure Unique test removed 32 transitions
Reduce isomorphic transitions removed 32 transitions.
Iterating post reduction 3 with 32 rules applied. Total rules applied 270 place count 71 transition count 569
Applied a total of 270 rules in 182 ms. Remains 71 /192 variables (removed 121) and now considering 569/475 (removed -94) transitions.
[2026-06-04 12:40:30] [INFO ] Flow matrix only has 440 transitions (discarded 129 similar events)
// Phase 1: matrix 440 rows 71 cols
[2026-06-04 12:40:30] [INFO ] Computed 7 invariants in 13 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-06-04 12:40:31] [INFO ] Implicit Places using invariants in 1152 ms returned [21, 40]
[2026-06-04 12:40:31] [INFO ] Actually due to overlaps returned [40]
Discarding 1 places :
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Implicit Place search using SMT only with invariants took 1206 ms to find 1 implicit places.
Starting structural reductions in LIVENESS mode, iteration 1 : 70/192 places, 567/475 transitions.
Graph (trivial) has 84 edges and 70 vertex of which 8 / 70 are part of one of the 4 SCC in 1 ms
Free SCC test removed 4 places
Ensure Unique test removed 52 transitions
Reduce isomorphic transitions removed 52 transitions.
Applied a total of 1 rules in 16 ms. Remains 66 /70 variables (removed 4) and now considering 515/567 (removed 52) transitions.
[2026-06-04 12:40:31] [INFO ] Flow matrix only has 357 transitions (discarded 158 similar events)
// Phase 1: matrix 357 rows 66 cols
[2026-06-04 12:40:31] [INFO ] Computed 6 invariants in 3 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-06-04 12:40:31] [INFO ] Implicit Places using invariants in 94 ms returned []
[2026-06-04 12:40:31] [INFO ] Flow matrix only has 357 transitions (discarded 158 similar events)
[2026-06-04 12:40:31] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-06-04 12:40:32] [INFO ] State equation strengthened by 63 read => feed constraints.
[2026-06-04 12:40:32] [INFO ] Implicit Places using invariants and state equation in 801 ms returned []
Implicit Place search using SMT with State Equation took 903 ms to find 0 implicit places.
Starting structural reductions in LIVENESS mode, iteration 2 : 66/192 places, 515/475 transitions.
Finished structural reductions in LIVENESS mode , in 2 iterations and 2345 ms. Remains : 66/192 places, 515/475 transitions.
Discarding 335 transitions out of 515. Remains 180
Initial state reduction rules removed 1 formulas.
[2026-06-04 12:40:33] [INFO ] Flatten gal took : 154 ms
[2026-06-04 12:40:33] [INFO ] Flatten gal took : 68 ms
RANDOM walk for 40000 steps (6531 resets) in 2903 ms. (13 steps per ms) remains 72/179 properties
BEST_FIRST walk for 4003 steps (150 resets) in 68 ms. (58 steps per ms) remains 72/72 properties
BEST_FIRST walk for 4003 steps (155 resets) in 26 ms. (148 steps per ms) remains 71/72 properties
[2026-06-04 12:40:33] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality11707888892570992565.gal : 59 ms
BEST_FIRST walk for 4003 steps (164 resets) in 28 ms. (138 steps per ms) remains 71/71 properties
[2026-06-04 12:40:33] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality7655813001395014895.prop : 1 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality11707888892570992565.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality7655813001395014895.prop' '--nowitness' '--gen-order' 'FOLLOW'
BEST_FIRST walk for 4003 steps (153 resets) in 58 ms. (67 steps per ms) remains 70/71 properties

BEST_FIRST walk for 4004 steps (162 resets) in 35 ms. (111 steps per ms) remains 69/70 properties
its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
BEST_FIRST walk for 4002 steps (175 resets) in 73 ms. (54 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (150 resets) in 27 ms. (143 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (150 resets) in 28 ms. (138 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4003 steps (166 resets) in 29 ms. (133 steps per ms) remains 69/69 properties
BEST_FIRST walk for 4004 steps (148 resets) in 22 ms. (174 steps per ms) remains 67/69 properties
BEST_FIRST walk for 4003 steps (151 resets) in 25 ms. (153 steps per ms) remains 67/67 properties
BEST_FIRST walk for 4002 steps (142 resets) in 23 ms. (166 steps per ms) remains 67/67 properties
BEST_FIRST walk for 4003 steps (149 resets) in 56 ms. (70 steps per ms) remains 67/67 properties
Loading property file /tmp/ReachabilityCardinality7655813001395014895.prop.
BEST_FIRST walk for 4003 steps (160 resets) in 15 ms. (250 steps per ms) remains 64/67 properties
SDD proceeding with computation,71 properties remain. new max is 4
SDD size :1 after 4
SDD proceeding with computation,71 properties remain. new max is 8
SDD size :4 after 16
SDD proceeding with computation,71 properties remain. new max is 16
SDD size :16 after 42
SDD proceeding with computation,71 properties remain. new max is 32
SDD size :42 after 67
BEST_FIRST walk for 4002 steps (148 resets) in 29 ms. (133 steps per ms) remains 64/64 properties
SDD proceeding with computation,71 properties remain. new max is 64
SDD size :67 after 132
BEST_FIRST walk for 4002 steps (129 resets) in 17 ms. (222 steps per ms) remains 64/64 properties
SDD proceeding with computation,71 properties remain. new max is 128
SDD size :132 after 278
BEST_FIRST walk for 4003 steps (152 resets) in 18 ms. (210 steps per ms) remains 64/64 properties
BEST_FIRST walk for 4004 steps (142 resets) in 23 ms. (166 steps per ms) remains 64/64 properties
BEST_FIRST walk for 4001 steps (155 resets) in 19 ms. (200 steps per ms) remains 64/64 properties
BEST_FIRST walk for 4004 steps (147 resets) in 18 ms. (210 steps per ms) remains 59/64 properties
BEST_FIRST walk for 4004 steps (157 resets) in 20 ms. (190 steps per ms) remains 59/59 properties
SDD proceeding with computation,71 properties remain. new max is 256
SDD size :278 after 1949
BEST_FIRST walk for 4004 steps (152 resets) in 23 ms. (166 steps per ms) remains 59/59 properties
BEST_FIRST walk for 4003 steps (145 resets) in 17 ms. (222 steps per ms) remains 59/59 properties
BEST_FIRST walk for 4001 steps (156 resets) in 32 ms. (121 steps per ms) remains 59/59 properties
BEST_FIRST walk for 4004 steps (162 resets) in 19 ms. (200 steps per ms) remains 59/59 properties
Reachability property qltransition_417 is true.
Reachability property qltransition_283 is true.
Reachability property qltransition_48 is true.
SDD proceeding with computation,68 properties remain. new max is 256
SDD size :1949 after 3877
BEST_FIRST walk for 4003 steps (153 resets) in 18 ms. (210 steps per ms) remains 59/59 properties
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst,16607,0.213413,9620,2,740,16,11848,74,0,858,10319,0
Total reachable state count : 16607

Verifying 71 reachability properties.
Reachability property qltransition_36 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_36,27,0.214367,9748,2,232,16,11848,74,0,861,10319,0
Reachability property qltransition_37 is true.
BEST_FIRST walk for 4003 steps (179 resets) in 17 ms. (222 steps per ms) remains 59/59 properties

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_37,27,0.214681,9748,2,232,16,11848,74,0,862,10319,0
Reachability property qltransition_41 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_41,27,0.214926,9748,2,232,16,11848,74,0,863,10319,0
Reachability property qltransition_42 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_42,27,0.215118,9748,2,232,16,11848,74,0,863,10319,0
Reachability property qltransition_43 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_43,27,0.215583,9748,2,232,16,11848,74,0,865,10319,0
Reachability property qltransition_44 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_44,27,0.215816,9748,2,232,16,11848,74,0,865,10319,0
Reachability property qltransition_45 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_45,27,0.216015,9748,2,232,16,11848,74,0,866,10319,0
Reachability property qltransition_48 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_48,27,0.216222,9748,2,232,16,11848,75,0,868,10319,0
Reachability property qltransition_207 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_207,27,0.216442,9748,2,232,16,11848,75,0,870,10319,0
Reachability property qltransition_209 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_209,27,0.216625,9748,2,232,16,11848,75,0,870,10319,0
Reachability property qltransition_211 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_211,27,0.21681,9748,2,232,16,11848,75,0,871,10319,0
Reachability property qltransition_213 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_213,27,0.217048,9748,2,232,17,11848,75,0,871,10319,0
Reachability property qltransition_215 is true.
BEST_FIRST walk for 4004 steps (148 resets) in 46 ms. (85 steps per ms) remains 59/59 properties

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_215,27,0.217229,9748,2,232,18,11848,75,0,871,10319,0
Reachability property qltransition_217 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_217,27,0.217409,9748,2,232,19,11848,75,0,871,10319,0
Reachability property qltransition_225 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_225,27,0.217621,9748,2,232,20,11848,75,0,872,10319,0
Reachability property qltransition_233 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_233,27,0.217843,9748,2,232,21,11848,75,0,873,10319,0
Reachability property qltransition_237 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_237,27,0.218023,9748,2,232,22,11848,75,0,873,10319,0
Reachability property qltransition_239 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_239,27,0.218207,9748,2,232,23,11848,75,0,873,10319,0
Reachability property qltransition_243 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_243,27,0.218392,9748,2,232,24,11848,75,0,873,10319,0
Reachability property qltransition_247 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_247,27,0.2186,9748,2,232,25,11848,75,0,874,10319,0
Reachability property qltransition_251 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_251,27,0.218791,9748,2,232,26,11848,75,0,874,10319,0
Reachability property qltransition_261 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_261,27,0.219024,9748,2,232,27,11848,75,0,875,10319,0
Reachability property qltransition_265 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_265,27,0.219237,9748,2,232,28,11848,75,0,876,10319,0
Reachability property qltransition_267 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_267,27,0.221573,9748,2,232,29,11848,75,0,876,10319,0
Reachability property qltransition_269 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_269,27,0.222062,9748,2,232,30,11848,75,0,876,10319,0
Reachability property qltransition_271 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_271,27,0.222328,9748,2,232,31,11848,75,0,876,10319,0
Reachability property qltransition_273 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_273,27,0.222574,9748,2,232,32,11848,75,0,876,10319,0
Reachability property qltransition_275 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_275,27,0.222773,9748,2,232,33,11848,75,0,876,10319,0
Reachability property qltransition_283 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_283,27,0.223002,9748,2,232,34,11848,76,0,877,10319,0
Reachability property qltransition_291 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_291,27,0.22321,9748,2,232,35,11848,76,0,878,10319,0
Reachability property qltransition_293 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_293,27,0.223405,9748,2,232,36,11848,76,0,878,10319,0
Reachability property qltransition_295 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_295,27,0.223586,9748,2,232,37,11848,76,0,878,10319,0
Reachability property qltransition_297 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_297,27,0.22377,9748,2,232,38,11848,76,0,878,10319,0
Reachability property qltransition_299 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_299,27,0.22395,9748,2,232,39,11848,76,0,878,10319,0
Reachability property qltransition_301 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_301,27,0.224133,9748,2,232,40,11848,76,0,878,10319,0
Reachability property qltransition_305 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_305,27,0.224338,9748,2,232,41,11848,76,0,878,10319,0
Reachability property qltransition_307 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_307,27,0.224534,9748,2,232,42,11848,76,0,878,10319,0
Reachability property qltransition_309 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_309,27,0.224725,9748,2,232,43,11848,76,0,878,10319,0
Reachability property qltransition_313 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_313,27,0.2249,9748,2,232,44,11848,76,0,878,10319,0
Reachability property qltransition_317 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_317,27,0.225072,9748,2,232,45,11848,76,0,878,10319,0
Reachability property qltransition_319 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_319,27,0.225249,9748,2,232,46,11848,76,0,878,10319,0
Reachability property qltransition_323 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_323,27,0.225455,9748,2,232,47,11848,76,0,878,10319,0
Reachability property qltransition_325 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_325,27,0.225642,9748,2,232,48,11848,76,0,879,10319,0
Reachability property qltransition_327 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_327,27,0.225845,9748,2,232,49,11848,76,0,879,10319,0
Reachability property qltransition_329 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_329,27,0.226053,9748,2,232,50,11848,76,0,879,10319,0
Reachability property qltransition_331 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_331,27,0.226265,9748,2,232,51,11848,76,0,879,10319,0
Reachability property qltransition_335 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_335,27,0.226489,9748,2,232,52,11848,76,0,880,10319,0
Reachability property qltransition_337 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_337,27,0.226673,9748,2,232,53,11848,76,0,880,10319,0
Reachability property qltransition_339 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_339,27,0.226878,9748,2,232,54,11848,76,0,880,10319,0
Reachability property qltransition_341 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_341,27,0.227067,9748,2,232,55,11848,76,0,880,10319,0
Reachability property qltransition_343 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_343,27,0.227252,9748,2,232,56,11848,76,0,880,10319,0
Reachability property qltransition_345 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_345,27,0.227448,9748,2,232,57,11848,76,0,880,10319,0
Reachability property qltransition_347 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_347,27,0.227627,9748,2,232,58,11848,76,0,880,10319,0
Reachability property qltransition_351 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_351,27,0.227804,9748,2,232,59,11848,76,0,880,10319,0
Reachability property qltransition_353 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_353,27,0.227982,9748,2,232,60,11848,76,0,880,10319,0
Reachability property qltransition_357 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_357,27,0.228153,9748,2,232,61,11848,76,0,880,10319,0
Reachability property qltransition_361 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_361,27,0.228332,9748,2,232,62,11848,76,0,880,10319,0
Reachability property qltransition_363 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_363,27,0.228512,9748,2,232,63,11848,76,0,880,10319,0
Reachability property qltransition_367 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_367,27,0.228707,9748,2,232,64,11848,76,0,880,10319,0
Reachability property qltransition_371 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_371,27,0.228895,9748,2,232,65,11848,76,0,880,10319,0
Reachability property qltransition_373 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_373,27,0.229193,9748,2,232,66,11848,76,0,880,10319,0
Reachability property qltransition_375 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_375,27,0.229399,9748,2,232,67,11848,76,0,880,10319,0
Reachability property qltransition_417 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_417,27,0.229593,9748,2,232,68,11848,77,0,881,10319,0
Reachability property qltransition_447 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_447,27,0.229821,9748,2,232,69,11848,77,0,882,10319,0
Reachability property qltransition_449 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_449,27,0.23001,9748,2,232,70,11848,77,0,882,10319,0
Reachability property qltransition_453 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_453,27,0.230201,9748,2,232,71,11848,77,0,882,10319,0
Reachability property qltransition_457 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_457,27,0.230403,9748,2,232,72,11848,77,0,882,10319,0
Reachability property qltransition_469 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_469,27,0.230607,9748,2,232,73,11848,77,0,883,10319,0
Reachability property qltransition_471 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_471,27,0.230793,9748,2,232,74,11848,77,0,883,10319,0
Reachability property qltransition_475 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_475,27,0.230993,9748,2,232,75,11848,77,0,883,10319,0
Reachability property qltransition_479 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_479,27,0.231177,9748,2,232,76,11848,77,0,883,10319,0
BEST_FIRST walk for 4002 steps (168 resets) in 19 ms. (200 steps per ms) remains 59/59 properties
BEST_FIRST walk for 4002 steps (157 resets) in 25 ms. (153 steps per ms) remains 59/59 properties
BEST_FIRST walk for 4003 steps (165 resets) in 19 ms. (200 steps per ms) remains 59/59 properties
BEST_FIRST walk for 4002 steps (157 resets) in 12 ms. (307 steps per ms) remains 59/59 properties
BEST_FIRST walk for 4004 steps (149 resets) in 15 ms. (250 steps per ms) remains 59/59 properties
BEST_FIRST walk for 4002 steps (143 resets) in 12 ms. (307 steps per ms) remains 56/59 properties
BEST_FIRST walk for 4003 steps (164 resets) in 16 ms. (235 steps per ms) remains 54/56 properties
BEST_FIRST walk for 4001 steps (152 resets) in 16 ms. (235 steps per ms) remains 53/54 properties
BEST_FIRST walk for 4002 steps (162 resets) in 17 ms. (222 steps per ms) remains 53/53 properties
BEST_FIRST walk for 4003 steps (159 resets) in 22 ms. (174 steps per ms) remains 53/53 properties
BEST_FIRST walk for 4002 steps (146 resets) in 15 ms. (250 steps per ms) remains 53/53 properties
BEST_FIRST walk for 4004 steps (150 resets) in 17 ms. (222 steps per ms) remains 53/53 properties
BEST_FIRST walk for 4003 steps (164 resets) in 21 ms. (181 steps per ms) remains 53/53 properties
BEST_FIRST walk for 4003 steps (157 resets) in 55 ms. (71 steps per ms) remains 52/53 properties
BEST_FIRST walk for 4004 steps (138 resets) in 21 ms. (182 steps per ms) remains 52/52 properties
BEST_FIRST walk for 4003 steps (148 resets) in 20 ms. (190 steps per ms) remains 52/52 properties
BEST_FIRST walk for 4003 steps (158 resets) in 24 ms. (160 steps per ms) remains 52/52 properties
BEST_FIRST walk for 4003 steps (153 resets) in 33 ms. (117 steps per ms) remains 52/52 properties
BEST_FIRST walk for 4002 steps (163 resets) in 20 ms. (190 steps per ms) remains 52/52 properties
BEST_FIRST walk for 4004 steps (167 resets) in 20 ms. (190 steps per ms) remains 52/52 properties
BEST_FIRST walk for 4000 steps (172 resets) in 14 ms. (266 steps per ms) remains 52/52 properties
BEST_FIRST walk for 4003 steps (167 resets) in 22 ms. (174 steps per ms) remains 52/52 properties
BEST_FIRST walk for 4003 steps (146 resets) in 22 ms. (174 steps per ms) remains 50/52 properties
BEST_FIRST walk for 4003 steps (151 resets) in 22 ms. (174 steps per ms) remains 50/50 properties
BEST_FIRST walk for 4001 steps (156 resets) in 22 ms. (173 steps per ms) remains 50/50 properties
BEST_FIRST walk for 4004 steps (164 resets) in 22 ms. (174 steps per ms) remains 50/50 properties
BEST_FIRST walk for 4004 steps (143 resets) in 22 ms. (174 steps per ms) remains 50/50 properties
BEST_FIRST walk for 4003 steps (155 resets) in 25 ms. (153 steps per ms) remains 49/50 properties
Able to resolve query QuasiLiveness after proving 180 properties.
FORMULA QuasiLiveness TRUE TECHNIQUES RANDOM_WALK DECISION_DIAGRAMS COLLATERAL_PROCESSING BESTFIRST_WALK TOPOLOGICAL INITIAL_STATE
Total runtime 4420 ms.

BK_STOP 1780576834342

--------------------
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
+ [[ QuasiLiveness = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution QuasiLiveness -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ perl -pe 's/.*\.//g'
++ sed s/.jar//
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202505121319.jar
+ VERSION=202505121319
+ echo 'Running Version 202505121319'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination QuasiLiveness -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800

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="MedleyA-PT-15"
export BK_EXAMINATION="QuasiLiveness"
export BK_TOOL="gold2025"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="1800"
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 2-5348"
echo " Executing tool gold2025"
echo " Input is MedleyA-PT-15, examination is QuasiLiveness"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r192-oct2-177969025800132"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/MedleyA-PT-15.tgz
mv MedleyA-PT-15 execution
cd execution
if [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "UpperBounds" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] || [ "QuasiLiveness" = "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 [ "QuasiLiveness" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "QuasiLiveness" != "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 "QuasiLiveness.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property QuasiLiveness.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "QuasiLiveness.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 '' QuasiLiveness.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] ; then
echo "FORMULA_NAME QuasiLiveness"
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 ;