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.r066-tall-177946967600247.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 CloudReconfiguration-PT-318, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r066-tall-177946967600247
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 1.2M
-rw-r--r-- 1 mcc users 7.9K Mar 6 08:54 CTLCardinality.txt
-rw-r--r-- 1 mcc users 84K Mar 6 08:54 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.2K Mar 6 08:54 CTLFireability.txt
-rw-r--r-- 1 mcc users 57K Mar 6 08:54 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Mar 3 18:30 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.8K Mar 3 18:30 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.9K Mar 15 08:26 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K Mar 15 08:26 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.4K Mar 15 08:26 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Mar 15 08:26 LTLFireability.xml
-rw-r--r-- 1 mcc users 14K Mar 6 08:55 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 152K Mar 6 08:55 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 11K Mar 6 08:55 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 96K Mar 6 08:55 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Mar 15 08:26 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Mar 15 08:26 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 4 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 661K 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 CloudReconfiguration-PT-318-ReachabilityFireability-2024-00
FORMULA_NAME CloudReconfiguration-PT-318-ReachabilityFireability-2024-01
FORMULA_NAME CloudReconfiguration-PT-318-ReachabilityFireability-2024-02
FORMULA_NAME CloudReconfiguration-PT-318-ReachabilityFireability-2024-03
FORMULA_NAME CloudReconfiguration-PT-318-ReachabilityFireability-2024-04
FORMULA_NAME CloudReconfiguration-PT-318-ReachabilityFireability-2024-05
FORMULA_NAME CloudReconfiguration-PT-318-ReachabilityFireability-2024-06
FORMULA_NAME CloudReconfiguration-PT-318-ReachabilityFireability-2024-07
FORMULA_NAME CloudReconfiguration-PT-318-ReachabilityFireability-2024-08
FORMULA_NAME CloudReconfiguration-PT-318-ReachabilityFireability-2024-09
FORMULA_NAME CloudReconfiguration-PT-318-ReachabilityFireability-2024-10
FORMULA_NAME CloudReconfiguration-PT-318-ReachabilityFireability-2024-11
FORMULA_NAME CloudReconfiguration-PT-318-ReachabilityFireability-2024-12
FORMULA_NAME CloudReconfiguration-PT-318-ReachabilityFireability-2024-13
FORMULA_NAME CloudReconfiguration-PT-318-ReachabilityFireability-2024-14
FORMULA_NAME CloudReconfiguration-PT-318-ReachabilityFireability-2024-15

=== Now, execution of the tool begins

BK_START 1779514440120

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=ReachabilityFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=CloudReconfiguration-PT-318
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
ReachabilityFireability PT
Running Version 202604301425
[2026-05-23 05:34:01] [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]
[2026-05-23 05:34:01] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-23 05:34:01] [INFO ] Load time of PNML (sax parser for PT used): 144 ms
[2026-05-23 05:34:01] [INFO ] Transformed 2587 places.
[2026-05-23 05:34:01] [INFO ] Transformed 3099 transitions.
[2026-05-23 05:34:01] [INFO ] Found NUPN structural information;
[2026-05-23 05:34:01] [INFO ] Parsed PT model containing 2587 places and 3099 transitions and 6479 arcs in 249 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 18 ms.
Working with output stream class java.io.PrintStream
RANDOM walk for 40000 steps (322 resets) in 2381 ms. (16 steps per ms) remains 14/16 properties
FORMULA CloudReconfiguration-PT-318-ReachabilityFireability-2024-12 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA CloudReconfiguration-PT-318-ReachabilityFireability-2024-08 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
[2026-05-23 05:34:02] [INFO ] Flatten gal took : 345 ms
BEST_FIRST walk for 40003 steps (98 resets) in 637 ms. (62 steps per ms) remains 14/14 properties
BEST_FIRST walk for 40002 steps (91 resets) in 231 ms. (172 steps per ms) remains 13/14 properties
FORMULA CloudReconfiguration-PT-318-ReachabilityFireability-2024-03 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 40002 steps (93 resets) in 248 ms. (160 steps per ms) remains 13/13 properties
[2026-05-23 05:34:02] [INFO ] Flatten gal took : 216 ms
BEST_FIRST walk for 40004 steps (97 resets) in 208 ms. (191 steps per ms) remains 12/13 properties
FORMULA CloudReconfiguration-PT-318-ReachabilityFireability-2024-04 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 40001 steps (98 resets) in 187 ms. (212 steps per ms) remains 11/12 properties
FORMULA CloudReconfiguration-PT-318-ReachabilityFireability-2024-10 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
[2026-05-23 05:34:02] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality14865022405516588272.gal : 106 ms
BEST_FIRST walk for 40003 steps (98 resets) in 154 ms. (258 steps per ms) remains 11/11 properties
[2026-05-23 05:34:02] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality10976486967205974377.prop : 2 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/ReachabilityCardinality14865022405516588272.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality10976486967205974377.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 ...330
BEST_FIRST walk for 40003 steps (84 resets) in 890 ms. (44 steps per ms) remains 9/11 properties
FORMULA CloudReconfiguration-PT-318-ReachabilityFireability-2024-13 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA CloudReconfiguration-PT-318-ReachabilityFireability-2024-11 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 40002 steps (107 resets) in 246 ms. (161 steps per ms) remains 9/9 properties
Loading property file /tmp/ReachabilityCardinality10976486967205974377.prop.
BEST_FIRST walk for 40003 steps (94 resets) in 211 ms. (188 steps per ms) remains 9/9 properties
BEST_FIRST walk for 40003 steps (96 resets) in 232 ms. (171 steps per ms) remains 9/9 properties
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-12874206881383534072.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-10475786003120910014.kers'
[2026-05-23 05:34:03] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-12874206881383534072.kers, --Pflows, --basisKERS=/tmp/petrispot-output-10475786003120910014.kers]
Culled 0 columns in 1 ms.
// Phase 1: matrix 3099 rows 2587 cols 6479 entries
Finished phase 1 with 2582 SingleSign rule and 1 generalized
[2026-05-23 05:34:03] [INFO ] Computed 4 invariants in 16 ms
Computed 4 P flows in 17 ms.
Exported basis to /tmp/petrispot-output-10475786003120910014.kers
Total runtime 19 ms.
Excessive predecessor constraint size, skipping predecessor.
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/197 variables, 197/197 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/197 variables, 0/197 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 2 (OVERLAPS) 2380/2577 variables, 4/201 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/2577 variables, 2380/2581 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/2577 variables, 0/2581 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 5 (OVERLAPS) 3091/5668 variables, 2577/5158 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/5668 variables, 0/5158 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 7 (OVERLAPS) 6/5674 variables, 3/5161 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/5674 variables, 3/5164 constraints. Problems are: Problem set: 0 solved, 9 unsolved
SDD proceeding with computation,11 properties remain. new max is 4
SDD size :1 after 2
SDD proceeding with computation,11 properties remain. new max is 8
SDD size :2 after 3
SDD proceeding with computation,11 properties remain. new max is 16
SDD size :3 after 4
SDD proceeding with computation,11 properties remain. new max is 32
SDD size :4 after 5
SDD proceeding with computation,11 properties remain. new max is 64
SDD size :5 after 6
SDD proceeding with computation,11 properties remain. new max is 128
SDD size :6 after 7
SDD proceeding with computation,11 properties remain. new max is 256
SDD size :7 after 9
SDD proceeding with computation,11 properties remain. new max is 512
SDD size :9 after 11
SDD proceeding with computation,11 properties remain. new max is 1024
SDD size :11 after 19
SDD proceeding with computation,11 properties remain. new max is 2048
SDD size :19 after 320
At refinement iteration 9 (INCLUDED_ONLY) 0/5674 variables, 0/5164 constraints. Problems are: Problem set: 0 solved, 9 unsolved
At refinement iteration 10 (OVERLAPS) 6/5680 variables, 3/5167 constraints. Problems are: Problem set: 0 solved, 9 unsolved
SDD proceeding with computation,11 properties remain. new max is 4096
SDD size :320 after 2226
At refinement iteration 11 (INCLUDED_ONLY) 0/5680 variables, 3/5170 constraints. Problems are: Problem set: 0 solved, 9 unsolved
Invariant property CloudReconfiguration-PT-318-ReachabilityFireability-2024-15 does not hold.
FORMULA CloudReconfiguration-PT-318-ReachabilityFireability-2024-15 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
SDD proceeding with computation,10 properties remain. new max is 4096
SDD size :2226 after 5405
Error getting values : (error "Timeout of Z3 solver reached")
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 5680/5686 variables, and 5170 constraints, problems are : Problem set: 1 solved, 8 unsolved in 5041 ms.
Refiners :[Domain max(s): 2583/2587 constraints, Generalized P Invariants (flows): 4/4 constraints, State Equation: 2583/2587 constraints, PredecessorRefiner: 9/4 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 1 solved, 8 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/197 variables, 197/197 constraints. Problems are: Problem set: 1 solved, 8 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/197 variables, 0/197 constraints. Problems are: Problem set: 1 solved, 8 unsolved
Reachability property CloudReconfiguration-PT-318-ReachabilityFireability-2024-11 is true.
SDD proceeding with computation,9 properties remain. new max is 4096
SDD size :5405 after 13640
At refinement iteration 2 (OVERLAPS) 2380/2577 variables, 4/201 constraints. Problems are: Problem set: 1 solved, 8 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/2577 variables, 2380/2581 constraints. Problems are: Problem set: 1 solved, 8 unsolved
SDD proceeding with computation,9 properties remain. new max is 8192
SDD size :13640 after 44430
At refinement iteration 4 (INCLUDED_ONLY) 0/2577 variables, 0/2581 constraints. Problems are: Problem set: 1 solved, 8 unsolved
SDD proceeding with computation,9 properties remain. new max is 16384
SDD size :44430 after 228316
At refinement iteration 5 (OVERLAPS) 3091/5668 variables, 2577/5158 constraints. Problems are: Problem set: 1 solved, 8 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/5668 variables, 3/5161 constraints. Problems are: Problem set: 1 solved, 8 unsolved
Reachability property CloudReconfiguration-PT-318-ReachabilityFireability-2024-06 is true.
FORMULA CloudReconfiguration-PT-318-ReachabilityFireability-2024-06 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
SDD proceeding with computation,8 properties remain. new max is 16384
SDD size :228316 after 3.6693e+06
At refinement iteration 7 (INCLUDED_ONLY) 0/5668 variables, 0/5161 constraints. Problems are: Problem set: 2 solved, 7 unsolved
SMT process timed out in 10256ms, After SMT, problems are : Problem set: 2 solved, 7 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 196 out of 2587 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 2587/2587 places, 3099/3099 transitions.
Graph (trivial) has 2470 edges and 2587 vertex of which 457 / 2587 are part of one of the 47 SCC in 19 ms
Free SCC test removed 410 places
Drop transitions (Empty/Sink Transition effects.) removed 493 transitions
Reduce isomorphic transitions removed 493 transitions.
Graph (complete) has 2892 edges and 2177 vertex of which 2163 are kept as prefixes of interest. Removing 14 places using SCC suffix rule.5 ms
Discarding 14 places :
Also discarding 9 output transitions
Drop transitions (Output transitions of discarded places.) removed 9 transitions
Drop transitions (Empty/Sink Transition effects.) removed 3 transitions
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 5 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 1058 transitions
Trivial Post-agglo rules discarded 1058 transitions
Performed 1058 trivial Post agglomeration. Transition count delta: 1058
Iterating post reduction 0 with 1063 rules applied. Total rules applied 1065 place count 2163 transition count 1534
Reduce places removed 1058 places and 0 transitions.
Ensure Unique test removed 41 transitions
Reduce isomorphic transitions removed 41 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 32 transitions
Trivial Post-agglo rules discarded 32 transitions
Performed 32 trivial Post agglomeration. Transition count delta: 32
Iterating post reduction 1 with 1131 rules applied. Total rules applied 2196 place count 1105 transition count 1461
Reduce places removed 32 places and 0 transitions.
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 4 transitions
Trivial Post-agglo rules discarded 4 transitions
Performed 4 trivial Post agglomeration. Transition count delta: 4
Iterating post reduction 2 with 40 rules applied. Total rules applied 2236 place count 1073 transition count 1453
Reduce places removed 4 places and 0 transitions.
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 3 transitions
Trivial Post-agglo rules discarded 3 transitions
Performed 3 trivial Post agglomeration. Transition count delta: 3
Iterating post reduction 3 with 11 rules applied. Total rules applied 2247 place count 1069 transition count 1446
Reduce places removed 3 places and 0 transitions.
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 3 transitions
Trivial Post-agglo rules discarded 3 transitions
Performed 3 trivial Post agglomeration. Transition count delta: 3
Iterating post reduction 4 with 8 rules applied. Total rules applied 2255 place count 1066 transition count 1441
Reduce places removed 3 places and 0 transitions.
Performed 196 Post agglomeration using F-continuation condition.Transition count delta: 196
Iterating post reduction 5 with 199 rules applied. Total rules applied 2454 place count 1063 transition count 1245
Reduce places removed 196 places and 0 transitions.
Ensure Unique test removed 25 transitions
Reduce isomorphic transitions removed 25 transitions.
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Iterating post reduction 6 with 223 rules applied. Total rules applied 2677 place count 867 transition count 1218
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 7 with 2 rules applied. Total rules applied 2679 place count 865 transition count 1218
Performed 43 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 8 with 43 Pre rules applied. Total rules applied 2679 place count 865 transition count 1175
Deduced a syphon composed of 43 places in 2 ms
Reduce places removed 43 places and 0 transitions.
Iterating global reduction 8 with 86 rules applied. Total rules applied 2765 place count 822 transition count 1175
Discarding 86 places :
Symmetric choice reduction at 8 with 86 rule applications. Total rules 2851 place count 736 transition count 1089
Iterating global reduction 8 with 86 rules applied. Total rules applied 2937 place count 736 transition count 1089
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 8 with 7 rules applied. Total rules applied 2944 place count 736 transition count 1082
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 9 with 1 rules applied. Total rules applied 2945 place count 735 transition count 1082
Performed 4 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 10 with 4 Pre rules applied. Total rules applied 2945 place count 735 transition count 1078
Deduced a syphon composed of 4 places in 2 ms
Reduce places removed 4 places and 0 transitions.
Iterating global reduction 10 with 8 rules applied. Total rules applied 2953 place count 731 transition count 1078
Discarding 47 places :
Symmetric choice reduction at 10 with 47 rule applications. Total rules 3000 place count 684 transition count 1031
Iterating global reduction 10 with 47 rules applied. Total rules applied 3047 place count 684 transition count 1031
Ensure Unique test removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 5 transitions
Trivial Post-agglo rules discarded 5 transitions
Performed 5 trivial Post agglomeration. Transition count delta: 5
Iterating post reduction 10 with 11 rules applied. Total rules applied 3058 place count 684 transition count 1020
Reduce places removed 5 places and 0 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 11 with 6 rules applied. Total rules applied 3064 place count 679 transition count 1019
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 12 with 1 rules applied. Total rules applied 3065 place count 678 transition count 1019
Discarding 6 places :
Symmetric choice reduction at 13 with 6 rule applications. Total rules 3071 place count 672 transition count 1010
Iterating global reduction 13 with 6 rules applied. Total rules applied 3077 place count 672 transition count 1010
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 13 with 2 rules applied. Total rules applied 3079 place count 672 transition count 1008
Discarding 1 places :
Symmetric choice reduction at 14 with 1 rule applications. Total rules 3080 place count 671 transition count 1006
Iterating global reduction 14 with 1 rules applied. Total rules applied 3081 place count 671 transition count 1006
Performed 172 Post agglomeration using F-continuation condition with reduction of 21 identical transitions.
Deduced a syphon composed of 172 places in 1 ms
Reduce places removed 172 places and 0 transitions.
Iterating global reduction 14 with 344 rules applied. Total rules applied 3425 place count 499 transition count 813
Ensure Unique test removed 26 transitions
Reduce isomorphic transitions removed 26 transitions.
Iterating post reduction 14 with 26 rules applied. Total rules applied 3451 place count 499 transition count 787
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 1 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 15 with 4 rules applied. Total rules applied 3455 place count 497 transition count 785
Performed 54 Post agglomeration using F-continuation condition with reduction of 16 identical transitions.
Deduced a syphon composed of 54 places in 1 ms
Reduce places removed 54 places and 0 transitions.
Iterating global reduction 15 with 108 rules applied. Total rules applied 3563 place count 443 transition count 804
Ensure Unique test removed 26 transitions
Reduce isomorphic transitions removed 26 transitions.
Iterating post reduction 15 with 26 rules applied. Total rules applied 3589 place count 443 transition count 778
Discarding 11 places :
Symmetric choice reduction at 16 with 11 rule applications. Total rules 3600 place count 432 transition count 756
Iterating global reduction 16 with 11 rules applied. Total rules applied 3611 place count 432 transition count 756
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: -19
Deduced a syphon composed of 1 places in 1 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 16 with 2 rules applied. Total rules applied 3613 place count 431 transition count 775
Drop transitions (Redundant composition of simpler transitions.) removed 46 transitions
Redundant transition composition rules discarded 46 transitions
Iterating global reduction 16 with 46 rules applied. Total rules applied 3659 place count 431 transition count 729
Discarding 1 places :
Symmetric choice reduction at 16 with 1 rule applications. Total rules 3660 place count 430 transition count 728
Iterating global reduction 16 with 1 rules applied. Total rules applied 3661 place count 430 transition count 728
Free-agglomeration rule applied 32 times.
Iterating global reduction 16 with 32 rules applied. Total rules applied 3693 place count 430 transition count 696
Reduce places removed 32 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 16 with 33 rules applied. Total rules applied 3726 place count 398 transition count 695
Drop transitions (Redundant composition of simpler transitions.) removed 5 transitions
Redundant transition composition rules discarded 5 transitions
Iterating global reduction 17 with 5 rules applied. Total rules applied 3731 place count 398 transition count 690
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 17 with 1 rules applied. Total rules applied 3732 place count 398 transition count 689
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 17 with 1 rules applied. Total rules applied 3733 place count 397 transition count 689
Partial Free-agglomeration rule applied 17 times.
Drop transitions (Partial Free agglomeration) removed 17 transitions
Iterating global reduction 18 with 17 rules applied. Total rules applied 3750 place count 397 transition count 689
Partial Post-agglomeration rule applied 5 times.
Drop transitions (Partial Post agglomeration) removed 5 transitions
Iterating global reduction 18 with 5 rules applied. Total rules applied 3755 place count 397 transition count 689
Applied a total of 3755 rules in 531 ms. Remains 397 /2587 variables (removed 2190) and now considering 689/3099 (removed 2410) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 538 ms. Remains : 397/2587 places, 689/3099 transitions.
RANDOM walk for 40000 steps (1523 resets) in 520 ms. (76 steps per ms) remains 5/7 properties
FORMULA CloudReconfiguration-PT-318-ReachabilityFireability-2024-05 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA CloudReconfiguration-PT-318-ReachabilityFireability-2024-01 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
BEST_FIRST walk for 40004 steps (450 resets) in 128 ms. (310 steps per ms) remains 5/5 properties
BEST_FIRST walk for 40003 steps (157 resets) in 127 ms. (312 steps per ms) remains 5/5 properties
BEST_FIRST walk for 40003 steps (405 resets) in 174 ms. (228 steps per ms) remains 5/5 properties
BEST_FIRST walk for 40001 steps (186 resets) in 133 ms. (298 steps per ms) remains 5/5 properties
BEST_FIRST walk for 40002 steps (438 resets) in 129 ms. (307 steps per ms) remains 5/5 properties
[2026-05-23 05:34:14] [INFO ] Flow matrix only has 686 transitions (discarded 3 similar events)
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-8137648243074217539.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-10211153366025068087.kers'
[2026-05-23 05:34:14] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-8137648243074217539.kers, --Pflows, --basisKERS=/tmp/petrispot-output-10211153366025068087.kers]
Culled 0 columns in 0 ms.
// Phase 1: matrix 686 rows 397 cols 1633 entries
Finished phase 1 with 394 SingleSign rule and 0 generalized
[2026-05-23 05:34:14] [INFO ] Computed 3 invariants in 2 ms
Computed 3 P flows in 2 ms.
Exported basis to /tmp/petrispot-output-10211153366025068087.kers
Total runtime 2 ms.
[2026-05-23 05:34:14] [INFO ] State equation strengthened by 5 read => feed constraints.
SDD proceeding with computation,8 properties remain. new max is 32768
SDD size :3.6693e+06 after 1.39006e+07
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/194 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 5 unsolved
Problem CloudReconfiguration-PT-318-ReachabilityFireability-2024-07 is UNSAT
FORMULA CloudReconfiguration-PT-318-ReachabilityFireability-2024-07 FALSE TECHNIQUES SMT_REFINEMENT
At refinement iteration 1 (OVERLAPS) 153/347 variables, 3/3 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/347 variables, 0/3 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 3 (OVERLAPS) 683/1030 variables, 347/350 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/1030 variables, 4/354 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/1030 variables, 0/354 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 6 (OVERLAPS) 53/1083 variables, 50/404 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/1083 variables, 1/405 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/1083 variables, 0/405 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 9 (OVERLAPS) 0/1083 variables, 0/405 constraints. Problems are: Problem set: 1 solved, 4 unsolved
No progress, stopping.
After SMT solving in domain Real declared 1083/1083 variables, and 405 constraints, problems are : Problem set: 1 solved, 4 unsolved in 1497 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 397/397 constraints, ReadFeed: 5/5 constraints, PredecessorRefiner: 5/0 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 1 solved, 4 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/145 variables, 0/0 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 1 (OVERLAPS) 188/333 variables, 3/3 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/333 variables, 0/3 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 3 (OVERLAPS) 637/970 variables, 333/336 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/970 variables, 4/340 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/970 variables, 0/340 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 6 (OVERLAPS) 93/1063 variables, 50/390 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/1063 variables, 1/391 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/1063 variables, 0/391 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 9 (OVERLAPS) 19/1082 variables, 13/404 constraints. Problems are: Problem set: 1 solved, 4 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/1082 variables, 0/404 constraints. Problems are: Problem set: 1 solved, 4 unsolved
Problem CloudReconfiguration-PT-318-ReachabilityFireability-2024-09 is UNSAT
FORMULA CloudReconfiguration-PT-318-ReachabilityFireability-2024-09 TRUE TECHNIQUES SMT_REFINEMENT
At refinement iteration 11 (OVERLAPS) 1/1083 variables, 1/405 constraints. Problems are: Problem set: 2 solved, 3 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/1083 variables, 0/405 constraints. Problems are: Problem set: 2 solved, 3 unsolved
At refinement iteration 13 (OVERLAPS) 0/1083 variables, 0/405 constraints. Problems are: Problem set: 2 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 1083/1083 variables, and 405 constraints, problems are : Problem set: 2 solved, 3 unsolved in 1517 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 397/397 constraints, ReadFeed: 5/5 constraints, PredecessorRefiner: 4/0 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 3060ms problems are : Problem set: 2 solved, 3 unsolved
FORMULA CloudReconfiguration-PT-318-ReachabilityFireability-2024-00 FALSE TECHNIQUES PARIKH_WALK
FORMULA CloudReconfiguration-PT-318-ReachabilityFireability-2024-14 FALSE TECHNIQUES PARIKH_WALK
Parikh walk visited 2 properties in 74 ms.
Support contains 35 out of 397 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 397/397 places, 689/689 transitions.
Graph (trivial) has 450 edges and 397 vertex of which 91 / 397 are part of one of the 28 SCC in 1 ms
Free SCC test removed 63 places
Drop transitions (Empty/Sink Transition effects.) removed 107 transitions
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 110 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 83 transitions
Trivial Post-agglo rules discarded 83 transitions
Performed 83 trivial Post agglomeration. Transition count delta: 83
Iterating post reduction 0 with 83 rules applied. Total rules applied 84 place count 334 transition count 496
Reduce places removed 83 places and 0 transitions.
Ensure Unique test removed 14 transitions
Reduce isomorphic transitions removed 14 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 4 transitions
Trivial Post-agglo rules discarded 4 transitions
Performed 4 trivial Post agglomeration. Transition count delta: 4
Iterating post reduction 1 with 101 rules applied. Total rules applied 185 place count 251 transition count 478
Reduce places removed 4 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Performed 5 Post agglomeration using F-continuation condition.Transition count delta: 5
Iterating post reduction 2 with 10 rules applied. Total rules applied 195 place count 247 transition count 472
Reduce places removed 5 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 3 with 6 rules applied. Total rules applied 201 place count 242 transition count 471
Performed 15 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 4 with 15 Pre rules applied. Total rules applied 201 place count 242 transition count 456
Deduced a syphon composed of 15 places in 1 ms
Reduce places removed 15 places and 0 transitions.
Iterating global reduction 4 with 30 rules applied. Total rules applied 231 place count 227 transition count 456
Discarding 16 places :
Symmetric choice reduction at 4 with 16 rule applications. Total rules 247 place count 211 transition count 434
Iterating global reduction 4 with 16 rules applied. Total rules applied 263 place count 211 transition count 434
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 4 with 8 rules applied. Total rules applied 271 place count 211 transition count 426
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 5 with 1 rules applied. Total rules applied 272 place count 210 transition count 426
Discarding 6 places :
Symmetric choice reduction at 6 with 6 rule applications. Total rules 278 place count 204 transition count 419
Iterating global reduction 6 with 6 rules applied. Total rules applied 284 place count 204 transition count 419
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 6 with 2 rules applied. Total rules applied 286 place count 204 transition count 417
Performed 49 Post agglomeration using F-continuation condition with reduction of 23 identical transitions.
Deduced a syphon composed of 49 places in 1 ms
Reduce places removed 49 places and 0 transitions.
Iterating global reduction 7 with 98 rules applied. Total rules applied 384 place count 155 transition count 345
Ensure Unique test removed 26 transitions
Reduce isomorphic transitions removed 26 transitions.
Iterating post reduction 7 with 26 rules applied. Total rules applied 410 place count 155 transition count 319
Discarding 4 places :
Symmetric choice reduction at 8 with 4 rule applications. Total rules 414 place count 151 transition count 312
Iterating global reduction 8 with 4 rules applied. Total rules applied 418 place count 151 transition count 312
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 8 with 2 rules applied. Total rules applied 420 place count 151 transition count 310
Discarding 1 places :
Symmetric choice reduction at 9 with 1 rule applications. Total rules 421 place count 150 transition count 309
Iterating global reduction 9 with 1 rules applied. Total rules applied 422 place count 150 transition count 309
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Iterating post reduction 9 with 3 rules applied. Total rules applied 425 place count 150 transition count 306
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 10 with 4 rules applied. Total rules applied 429 place count 148 transition count 304
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 10 with 4 rules applied. Total rules applied 433 place count 148 transition count 300
Performed 12 Post agglomeration using F-continuation condition.Transition count delta: -6
Deduced a syphon composed of 12 places in 0 ms
Reduce places removed 12 places and 0 transitions.
Iterating global reduction 11 with 24 rules applied. Total rules applied 457 place count 136 transition count 306
Ensure Unique test removed 22 transitions
Reduce isomorphic transitions removed 22 transitions.
Iterating post reduction 11 with 22 rules applied. Total rules applied 479 place count 136 transition count 284
Discarding 11 places :
Symmetric choice reduction at 12 with 11 rule applications. Total rules 490 place count 125 transition count 258
Iterating global reduction 12 with 11 rules applied. Total rules applied 501 place count 125 transition count 258
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 12 with 4 rules applied. Total rules applied 505 place count 125 transition count 254
Drop transitions (Redundant composition of simpler transitions.) removed 11 transitions
Redundant transition composition rules discarded 11 transitions
Iterating global reduction 13 with 11 rules applied. Total rules applied 516 place count 125 transition count 243
Free-agglomeration rule applied 20 times.
Iterating global reduction 13 with 20 rules applied. Total rules applied 536 place count 125 transition count 223
Reduce places removed 20 places and 0 transitions.
Ensure Unique test removed 8 transitions
Reduce isomorphic transitions removed 8 transitions.
Iterating post reduction 13 with 28 rules applied. Total rules applied 564 place count 105 transition count 215
Drop transitions (Redundant composition of simpler transitions.) removed 5 transitions
Redundant transition composition rules discarded 5 transitions
Iterating global reduction 14 with 5 rules applied. Total rules applied 569 place count 105 transition count 210
Partial Free-agglomeration rule applied 4 times.
Drop transitions (Partial Free agglomeration) removed 4 transitions
Iterating global reduction 14 with 4 rules applied. Total rules applied 573 place count 105 transition count 210
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 14 with 1 rules applied. Total rules applied 574 place count 105 transition count 209
Drop transitions (Redundant composition of simpler transitions.) removed 1 transitions
Redundant transition composition rules discarded 1 transitions
Iterating global reduction 15 with 1 rules applied. Total rules applied 575 place count 105 transition count 208
Partial Post-agglomeration rule applied 2 times.
Drop transitions (Partial Post agglomeration) removed 2 transitions
Iterating global reduction 15 with 2 rules applied. Total rules applied 577 place count 105 transition count 208
Drop transitions (Redundant composition of simpler transitions.) removed 1 transitions
Redundant transition composition rules discarded 1 transitions
Iterating global reduction 15 with 1 rules applied. Total rules applied 578 place count 105 transition count 207
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 15 with 1 rules applied. Total rules applied 579 place count 104 transition count 206
Applied a total of 579 rules in 134 ms. Remains 104 /397 variables (removed 293) and now considering 206/689 (removed 483) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 135 ms. Remains : 104/397 places, 206/689 transitions.
RANDOM walk for 40000 steps (2499 resets) in 101 ms. (392 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40003 steps (597 resets) in 101 ms. (392 steps per ms) remains 1/1 properties
Finished probabilistic random walk after 756932 steps, run visited all 1 properties in 1142 ms. (steps per millisecond=662 )
Probabilistic random walk after 756932 steps, saw 149620 distinct states, run finished after 1149 ms. (steps per millisecond=658 ) properties seen :1
FORMULA CloudReconfiguration-PT-318-ReachabilityFireability-2024-02 FALSE TECHNIQUES TOPOLOGICAL PROBABILISTIC_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 17955 ms.

BK_STOP 1779514459231

--------------------
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="CloudReconfiguration-PT-318"
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 CloudReconfiguration-PT-318, 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 r066-tall-177946967600247"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/CloudReconfiguration-PT-318.tgz
mv CloudReconfiguration-PT-318 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 ;