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.r034-tall-177946841900303.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 BridgeAndVehicles-PT-V80P50N10, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r034-tall-177946841900303
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 7.0M
-rw-r--r-- 1 mcc users 21K Mar 5 07:59 CTLCardinality.txt
-rw-r--r-- 1 mcc users 125K Mar 5 07:59 CTLCardinality.xml
-rw-r--r-- 1 mcc users 310K Mar 5 07:59 CTLFireability.txt
-rw-r--r-- 1 mcc users 1.2M Mar 5 07:59 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Mar 3 18:30 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.4K Mar 3 18:30 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 18K Mar 15 07:37 LTLCardinality.txt
-rw-r--r-- 1 mcc users 65K Mar 15 07:37 LTLCardinality.xml
-rw-r--r-- 1 mcc users 113K Mar 15 07:37 LTLFireability.txt
-rw-r--r-- 1 mcc users 333K Mar 15 07:37 LTLFireability.xml
-rw-r--r-- 1 mcc users 31K Mar 5 08:03 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 187K Mar 5 08:03 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 601K Mar 5 08:02 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 2.3M Mar 5 08:02 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 2.1K Mar 15 07:37 UpperBounds.txt
-rw-r--r-- 1 mcc users 4.3K Mar 15 07:37 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 10 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 1.7M 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 BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-00
FORMULA_NAME BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-01
FORMULA_NAME BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-02
FORMULA_NAME BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-03
FORMULA_NAME BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-04
FORMULA_NAME BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-05
FORMULA_NAME BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-06
FORMULA_NAME BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-07
FORMULA_NAME BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-08
FORMULA_NAME BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-09
FORMULA_NAME BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-10
FORMULA_NAME BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-11
FORMULA_NAME BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-12
FORMULA_NAME BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-13
FORMULA_NAME BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-14
FORMULA_NAME BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-15

=== Now, execution of the tool begins

BK_START 1779572652894

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=ReachabilityFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=BridgeAndVehicles-PT-V80P50N10
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
ReachabilityFireability PT
Running Version 202604301425
[2026-05-23 21:44:14] [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 21:44:14] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-23 21:44:14] [INFO ] Load time of PNML (sax parser for PT used): 170 ms
[2026-05-23 21:44:14] [INFO ] Transformed 188 places.
[2026-05-23 21:44:14] [INFO ] Transformed 2108 transitions.
[2026-05-23 21:44:14] [INFO ] Parsed PT model containing 188 places and 2108 transitions and 15950 arcs in 281 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 85 ms.
Working with output stream class java.io.PrintStream
[2026-05-23 21:44:16] [INFO ] Flatten gal took : 555 ms
[2026-05-23 21:44:16] [INFO ] Flatten gal took : 232 ms
[2026-05-23 21:44:16] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality11912980678085682076.gal : 129 ms
[2026-05-23 21:44:16] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality3816319979955906956.prop : 121 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/ReachabilityCardinality11912980678085682076.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality3816319979955906956.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 ...329
RANDOM walk for 40000 steps (56 resets) in 9008 ms. (4 steps per ms) remains 9/16 properties
FORMULA BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-15 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-09 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-07 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-05 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-04 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-01 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-00 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Loading property file /tmp/ReachabilityCardinality3816319979955906956.prop.
BEST_FIRST walk for 40003 steps (20 resets) in 6808 ms. (5 steps per ms) remains 7/9 properties
FORMULA BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-06 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-02 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 40004 steps (28 resets) in 5709 ms. (7 steps per ms) remains 7/7 properties
BEST_FIRST walk for 40002 steps (20 resets) in 803 ms. (49 steps per ms) remains 6/7 properties
FORMULA BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-14 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 40002 steps (20 resets) in 945 ms. (42 steps per ms) remains 6/6 properties
BEST_FIRST walk for 40001 steps (20 resets) in 657 ms. (60 steps per ms) remains 6/6 properties
BEST_FIRST walk for 40002 steps (20 resets) in 641 ms. (62 steps per ms) remains 6/6 properties
BEST_FIRST walk for 40002 steps (20 resets) in 651 ms. (61 steps per ms) remains 6/6 properties
[2026-05-23 21:44:21] [INFO ] Flow matrix only has 370 transitions (discarded 1738 similar events)
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-16476009098405303356.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-16850417202976411356.kers'
[2026-05-23 21:44:21] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-16476009098405303356.kers, --Pflows, --basisKERS=/tmp/petrispot-output-16850417202976411356.kers]
Culled 0 columns in 0 ms.
// Phase 1: matrix 370 rows 188 cols 1950 entries
Finished phase 1 with 21 SingleSign rule and 160 generalized
[2026-05-23 21:44:21] [INFO ] Computed 7 invariants in 2 ms
Computed 7 P flows in 3 ms.
Exported basis to /tmp/petrispot-output-16850417202976411356.kers
Total runtime 3 ms.
[2026-05-23 21:44:21] [INFO ] State equation strengthened by 22 read => feed constraints.
Excessive predecessor constraint size, skipping predecessor.
SDD proceeding with computation,16 properties remain. new max is 4
SDD size :1 after 2
Problem BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-13 is UNSAT
FORMULA BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-13 FALSE TECHNIQUES SMT_REFINEMENT
SDD proceeding with computation,16 properties remain. new max is 8
SDD size :2 after 6
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/184 variables, 4/4 constraints. Problems are: Problem set: 1 solved, 5 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/184 variables, 0/4 constraints. Problems are: Problem set: 1 solved, 5 unsolved
Problem BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-03 is UNSAT
FORMULA BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-03 FALSE TECHNIQUES SMT_REFINEMENT
At refinement iteration 2 (OVERLAPS) 4/188 variables, 3/7 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/188 variables, 0/7 constraints. Problems are: Problem set: 2 solved, 4 unsolved
SDD proceeding with computation,16 properties remain. new max is 16
SDD size :6 after 19
At refinement iteration 4 (OVERLAPS) 370/558 variables, 188/195 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/558 variables, 22/217 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/558 variables, 0/217 constraints. Problems are: Problem set: 2 solved, 4 unsolved
SDD proceeding with computation,16 properties remain. new max is 32
SDD size :19 after 42
At refinement iteration 7 (OVERLAPS) 0/558 variables, 0/217 constraints. Problems are: Problem set: 2 solved, 4 unsolved
No progress, stopping.
After SMT solving in domain Real declared 558/558 variables, and 217 constraints, problems are : Problem set: 2 solved, 4 unsolved in 1686 ms.
Refiners :[Positive P Invariants (semi-flows): 7/7 constraints, State Equation: 188/188 constraints, ReadFeed: 22/22 constraints, PredecessorRefiner: 5/0 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 2 solved, 4 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/93 variables, 1/1 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/93 variables, 0/1 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 2 (OVERLAPS) 95/188 variables, 6/7 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/188 variables, 1/8 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/188 variables, 0/8 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 5 (OVERLAPS) 370/558 variables, 188/196 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/558 variables, 22/218 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/558 variables, 0/218 constraints. Problems are: Problem set: 2 solved, 4 unsolved
At refinement iteration 8 (OVERLAPS) 0/558 variables, 0/218 constraints. Problems are: Problem set: 2 solved, 4 unsolved
No progress, stopping.
Reachability property BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-01 is true.
SDD proceeding with computation,15 properties remain. new max is 32
SDD size :42 after 132
After SMT solving in domain Int declared 558/558 variables, and 218 constraints, problems are : Problem set: 2 solved, 4 unsolved in 3080 ms.
Refiners :[Positive P Invariants (semi-flows): 7/7 constraints, State Equation: 188/188 constraints, ReadFeed: 22/22 constraints, PredecessorRefiner: 4/0 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 4895ms problems are : Problem set: 2 solved, 4 unsolved
Fused 4 Parikh solutions to 3 different solutions.
Parikh walk visited 0 properties in 2816 ms.
Support contains 93 out of 188 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 188/188 places, 2108/2108 transitions.
Graph (complete) has 1882 edges and 188 vertex of which 186 are kept as prefixes of interest. Removing 2 places using SCC suffix rule.10 ms
Discarding 2 places :
Also discarding 0 output transitions
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 2 place count 185 transition count 2107
Iterating global reduction 0 with 1 rules applied. Total rules applied 3 place count 185 transition count 2107
Applied a total of 3 rules in 332 ms. Remains 185 /188 variables (removed 3) and now considering 2107/2108 (removed 1) transitions.
Running 2104 sub problems to find dead transitions.
[2026-05-23 21:44:29] [INFO ] Flow matrix only has 369 transitions (discarded 1738 similar events)
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-1294213238620488992.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-10985809464071137974.kers'
[2026-05-23 21:44:29] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-1294213238620488992.kers, --Pflows, --basisKERS=/tmp/petrispot-output-10985809464071137974.kers]
Culling duplicate invariants (modulo rational): removing 1 columns.
Culled 1 columns in 0 ms.
// Phase 1: matrix 369 rows 184 cols 1785 entries
Finished phase 1 with 180 SingleSign rule and 0 generalized
[2026-05-23 21:44:29] [INFO ] Computed 5 invariants in 1 ms
Computed 5 P flows in 5 ms.
Exported basis to /tmp/petrispot-output-10985809464071137974.kers
Total runtime 6 ms.
[2026-05-23 21:44:29] [INFO ] State equation strengthened by 22 read => feed constraints.
Reachability property BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-15 is true.
At refinement iteration 0 (INCLUDED_ONLY) 0/185 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 2104 unsolved
SDD proceeding with computation,14 properties remain. new max is 32
SDD size :132 after 858
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 185/554 variables, and 6 constraints, problems are : Problem set: 0 solved, 2104 unsolved in 20057 ms.
Refiners :[Positive P Invariants (semi-flows): 5/5 constraints, State Equation: 0/185 constraints, ReadFeed: 0/22 constraints, PredecessorRefiner: 2104/181 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 2104 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/185 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 2104 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/185 variables, 1/6 constraints. Problems are: Problem set: 0 solved, 2104 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 185/554 variables, and 6 constraints, problems are : Problem set: 0 solved, 2104 unsolved in 20074 ms.
Refiners :[Positive P Invariants (semi-flows): 5/5 constraints, State Equation: 0/185 constraints, ReadFeed: 0/22 constraints, PredecessorRefiner: 1923/181 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 42177ms problems are : Problem set: 0 solved, 2104 unsolved
Search for dead transitions found 0 dead transitions in 42202ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 42572 ms. Remains : 185/188 places, 2107/2108 transitions.
RANDOM walk for 40000 steps (56 resets) in 713 ms. (56 steps per ms) remains 4/4 properties
BEST_FIRST walk for 40001 steps (20 resets) in 563 ms. (70 steps per ms) remains 4/4 properties
BEST_FIRST walk for 40002 steps (20 resets) in 563 ms. (70 steps per ms) remains 4/4 properties
BEST_FIRST walk for 40000 steps (20 resets) in 352 ms. (113 steps per ms) remains 4/4 properties
BEST_FIRST walk for 40000 steps (20 resets) in 323 ms. (123 steps per ms) remains 4/4 properties
SDD proceeding with computation,14 properties remain. new max is 64
SDD size :858 after 1584
Interrupted probabilistic random walk after 131981 steps, run timeout after 3001 ms. (steps per millisecond=43 ) properties seen :0 out of 4
Probabilistic random walk after 131981 steps, saw 37469 distinct states, run finished after 3022 ms. (steps per millisecond=43 ) properties seen :0
[2026-05-23 21:45:15] [INFO ] Flow matrix only has 369 transitions (discarded 1738 similar events)
[2026-05-23 21:45:15] [INFO ] Invariant cache hit.
[2026-05-23 21:45:15] [INFO ] State equation strengthened by 22 read => feed constraints.
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/93 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/93 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 2 (OVERLAPS) 92/185 variables, 4/5 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/185 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 4 (OVERLAPS) 369/554 variables, 185/190 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/554 variables, 22/212 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/554 variables, 0/212 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 7 (OVERLAPS) 0/554 variables, 0/212 constraints. Problems are: Problem set: 0 solved, 4 unsolved
No progress, stopping.
After SMT solving in domain Real declared 554/554 variables, and 212 constraints, problems are : Problem set: 0 solved, 4 unsolved in 1673 ms.
Refiners :[Positive P Invariants (semi-flows): 5/5 constraints, State Equation: 185/185 constraints, ReadFeed: 22/22 constraints, PredecessorRefiner: 4/0 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 4 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/93 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/93 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 2 (OVERLAPS) 92/185 variables, 4/5 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/185 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 4 (OVERLAPS) 369/554 variables, 185/190 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/554 variables, 22/212 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/554 variables, 0/212 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 7 (OVERLAPS) 0/554 variables, 0/212 constraints. Problems are: Problem set: 0 solved, 4 unsolved
No progress, stopping.
After SMT solving in domain Int declared 554/554 variables, and 212 constraints, problems are : Problem set: 0 solved, 4 unsolved in 9444 ms.
Refiners :[Positive P Invariants (semi-flows): 5/5 constraints, State Equation: 185/185 constraints, ReadFeed: 22/22 constraints, PredecessorRefiner: 4/0 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 11191ms problems are : Problem set: 0 solved, 4 unsolved
Parikh walk visited 0 properties in 973 ms.
Support contains 93 out of 185 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 185/185 places, 2107/2107 transitions.
Applied a total of 0 rules in 352 ms. Remains 185 /185 variables (removed 0) and now considering 2107/2107 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 352 ms. Remains : 185/185 places, 2107/2107 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 185/185 places, 2107/2107 transitions.
Applied a total of 0 rules in 329 ms. Remains 185 /185 variables (removed 0) and now considering 2107/2107 (removed 0) transitions.
[2026-05-23 21:45:28] [INFO ] Flow matrix only has 369 transitions (discarded 1738 similar events)
[2026-05-23 21:45:28] [INFO ] Invariant cache hit.
[2026-05-23 21:45:29] [INFO ] Implicit Places using invariants in 313 ms returned []
[2026-05-23 21:45:29] [INFO ] Flow matrix only has 369 transitions (discarded 1738 similar events)
[2026-05-23 21:45:29] [INFO ] Invariant cache hit.
[2026-05-23 21:45:29] [INFO ] State equation strengthened by 22 read => feed constraints.
[2026-05-23 21:45:29] [INFO ] Implicit Places using invariants and state equation in 695 ms returned []
Implicit Place search using SMT with State Equation took 1047 ms to find 0 implicit places.
[2026-05-23 21:45:30] [INFO ] Redundant transitions in 151 ms returned []
Skipped dead transition search.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 1551 ms. Remains : 185/185 places, 2107/2107 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 1738 transitions
Reduce isomorphic transitions removed 1738 transitions.
Iterating post reduction 0 with 1738 rules applied. Total rules applied 1738 place count 185 transition count 369
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 1 with 2 rules applied. Total rules applied 1740 place count 184 transition count 368
Applied a total of 1740 rules in 54 ms. Remains 184 /185 variables (removed 1) and now considering 368/2107 (removed 1739) transitions.
Running SMT prover for 4 properties.
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-9292517071315105924.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-9250950419878890048.kers'
[2026-05-23 21:45:30] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-9292517071315105924.kers, --Pflows, --basisKERS=/tmp/petrispot-output-9250950419878890048.kers]
Culling duplicate invariants (modulo rational): removing 1 columns.
Culled 1 columns in 4 ms.
// Phase 1: matrix 368 rows 183 cols 1783 entries
Finished phase 1 with 179 SingleSign rule and 0 generalized
[2026-05-23 21:45:30] [INFO ] Computed 5 invariants in 5 ms
Computed 5 P flows in 10 ms.
Exported basis to /tmp/petrispot-output-9250950419878890048.kers
Total runtime 11 ms.
[2026-05-23 21:45:30] [INFO ] [Real]Absence check using 5 positive place invariants in 22 ms returned sat
[2026-05-23 21:45:30] [INFO ] After 161ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:4
[2026-05-23 21:45:30] [INFO ] [Nat]Absence check using 5 positive place invariants in 30 ms returned sat
[2026-05-23 21:45:31] [INFO ] After 378ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :4
TRAPS : Iteration 0
[2026-05-23 21:45:31] [INFO ] After 774ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :4
[2026-05-23 21:45:31] [INFO ] After 1412ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :4
[2026-05-23 21:45:31] [INFO ] Flatten gal took : 61 ms
[2026-05-23 21:45:31] [INFO ] Flatten gal took : 17 ms
[2026-05-23 21:45:31] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality10040335066803908385.gal : 4 ms
[2026-05-23 21:45:31] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality15372392434883351866.prop : 1 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality10040335066803908385.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality15372392434883351866.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
Loading property file /tmp/ReachabilityCardinality15372392434883351866.prop.
SDD proceeding with computation,4 properties remain. new max is 4
SDD size :1 after 6
SDD proceeding with computation,4 properties remain. new max is 8
SDD size :6 after 14
SDD proceeding with computation,4 properties remain. new max is 16
SDD size :14 after 30
SDD proceeding with computation,4 properties remain. new max is 32
SDD size :30 after 53
SDD proceeding with computation,4 properties remain. new max is 64
SDD size :53 after 212
Reachability property BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-12 is true.
SDD proceeding with computation,3 properties remain. new max is 64
SDD size :212 after 1060
SDD proceeding with computation,3 properties remain. new max is 128
SDD size :1060 after 2968
SDD proceeding with computation,3 properties remain. new max is 256
SDD size :2968 after 8745
Reachability property BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-10 is true.
SDD proceeding with computation,2 properties remain. new max is 256
SDD size :8745 after 36040
SDD proceeding with computation,2 properties remain. new max is 512
SDD size :36040 after 93863
SDD proceeding with computation,2 properties remain. new max is 1024
SDD size :93863 after 346885
Invariant property BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-11 does not hold.
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :346885 after 1.72001e+06
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :1.72001e+06 after 9.09314e+06
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :9.09314e+06 after 9.7476e+06
SDD proceeding with computation,1 properties remain. new max is 8192
SDD size :9.7476e+06 after 1.0874e+07
SDD proceeding with computation,1 properties remain. new max is 16384
SDD size :1.0874e+07 after 1.33131e+07
Detected timeout of ITS tools.
[2026-05-23 21:45:46] [INFO ] Flatten gal took : 59 ms
[2026-05-23 21:45:46] [INFO ] Applying decomposition
[2026-05-23 21:45:47] [INFO ] Flatten gal took : 40 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202604301425/bin/convert-linux64' '-i' '/tmp/graph7040790670050764822.txt' '-o' '/tmp/graph7040790670050764822.bin' '-w' '/tmp/graph7040790670050764822.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202604301425/bin/louvain-linux64' '/tmp/graph7040790670050764822.bin' '-l' '-1' '-v' '-w' '/tmp/graph7040790670050764822.weights' '-q' '0' '-e' '0.001'
[2026-05-23 21:45:47] [INFO ] Decomposing Gal with order
[2026-05-23 21:45:47] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-23 21:45:47] [INFO ] Removed a total of 337 redundant transitions.
[2026-05-23 21:45:48] [INFO ] Flatten gal took : 261 ms
[2026-05-23 21:45:48] [INFO ] Fuse similar labels procedure discarded/fused a total of 180 labels/synchronizations in 26 ms.
[2026-05-23 21:45:48] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality273326742020152180.gal : 3 ms
[2026-05-23 21:45:48] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality1880439774803958693.prop : 1 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality273326742020152180.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality1880439774803958693.prop' '--nowitness'

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 ...306
Loading property file /tmp/ReachabilityCardinality1880439774803958693.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 19
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :19 after 36
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :36 after 68
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :68 after 3402
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :3402 after 399611
Invariant property BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-07 does not hold.
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :399611 after 1.27313e+06
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 33154 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
[2026-05-23 21:46:03] [INFO ] Flatten gal took : 44 ms
[2026-05-23 21:46:03] [INFO ] Applying decomposition
[2026-05-23 21:46:03] [INFO ] Flatten gal took : 42 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202604301425/bin/convert-linux64' '-i' '/tmp/graph7677383068975728623.txt' '-o' '/tmp/graph7677383068975728623.bin' '-w' '/tmp/graph7677383068975728623.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202604301425/bin/louvain-linux64' '/tmp/graph7677383068975728623.bin' '-l' '-1' '-v' '-w' '/tmp/graph7677383068975728623.weights' '-q' '0' '-e' '0.001'
[2026-05-23 21:46:03] [INFO ] Decomposing Gal with order
[2026-05-23 21:46:03] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-23 21:46:04] [INFO ] Removed a total of 4686 redundant transitions.
[2026-05-23 21:46:04] [INFO ] Flatten gal took : 441 ms
[2026-05-23 21:46:04] [INFO ] Fuse similar labels procedure discarded/fused a total of 629 labels/synchronizations in 39 ms.
[2026-05-23 21:46:04] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality15955093879027011888.gal : 3 ms
[2026-05-23 21:46:04] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality907591537949313012.prop : 1 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality15955093879027011888.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality907591537949313012.prop' '--nowitness'

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 ...307
Loading property file /tmp/ReachabilityCardinality907591537949313012.prop.
SDD proceeding with computation,4 properties remain. new max is 4
SDD size :1 after 12
SDD proceeding with computation,4 properties remain. new max is 8
SDD size :12 after 14
SDD proceeding with computation,4 properties remain. new max is 16
SDD size :14 after 36
SDD proceeding with computation,4 properties remain. new max is 32
SDD size :36 after 54
SDD proceeding with computation,4 properties remain. new max is 64
SDD size :54 after 83
SDD proceeding with computation,4 properties remain. new max is 128
SDD size :83 after 162
SDD proceeding with computation,4 properties remain. new max is 256
SDD size :162 after 162
SDD proceeding with computation,4 properties remain. new max is 512
SDD size :162 after 162
SDD proceeding with computation,4 properties remain. new max is 1024
SDD size :162 after 162
SDD proceeding with computation,4 properties remain. new max is 2048
SDD size :162 after 162
SDD proceeding with computation,4 properties remain. new max is 4096
SDD size :3220 after 3300
SDD proceeding with computation,4 properties remain. new max is 8192
SDD size :3300 after 4580
SDD proceeding with computation,4 properties remain. new max is 16384
SDD size :8753 after 12087
SDD proceeding with computation,4 properties remain. new max is 32768
SDD size :86047 after 92989
Reachability property BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-10 is true.
FORMULA BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-10 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING USE_NUPN
SDD proceeding with computation,3 properties remain. new max is 32768
SDD size :298629 after 301821
Reachability property BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-08 is true.
FORMULA BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-08 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING USE_NUPN
SDD proceeding with computation,2 properties remain. new max is 32768
SDD size :486906 after 486981
SDD proceeding with computation,2 properties remain. new max is 65536
SDD size :486981 after 490056
SDD proceeding with computation,2 properties remain. new max is 131072
SDD size :490056 after 747332
SDD proceeding with computation,2 properties remain. new max is 262144
SDD size :747332 after 1.21149e+06
Reachability property BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-12 is true.
FORMULA BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-12 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING USE_NUPN
Invariant property BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-11 does not hold.
FORMULA BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-11 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING USE_NUPN
Found states matching all0 target predicate
Will report total states built up to this point. Computation was interrupted after 262145 fixpoint passes
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\_mod\_flat,2.936e+06,775.231,4415780,19742,151721,955181,2.23667e+06,273,3.58938e+06,630,7.36705e+07,0
Total reachable state count : 2936005

Verifying 4 reachability properties.
Reachability property BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-08 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
BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-08,1,801.095,4415780,13,144,955181,2.23667e+06,863,3.58938e+06,775,7.36705e+07,0
Reachability property BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-10 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
BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-10,27,802.604,4415780,18,291,955181,2.23667e+06,1494,3.58938e+06,890,7.36705e+07,0
Invariant property BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-11 does not hold.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-11,3,803.298,4415780,13,143,955181,2.23667e+06,1511,3.58938e+06,894,7.36705e+07,0
Reachability property BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-12 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
BridgeAndVehicles-PT-V80P50N10-ReachabilityFireability-2024-12,16,803.328,4415780,13,302,955181,2.23667e+06,1520,3.58938e+06,895,7.36705e+07,0
ITS tools runner thread asked to quit. Dying gracefully.
All properties solved without resorting to model-checking.
Total runtime 915321 ms.

BK_STOP 1779573569482

--------------------
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="BridgeAndVehicles-PT-V80P50N10"
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 BridgeAndVehicles-PT-V80P50N10, 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 r034-tall-177946841900303"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/BridgeAndVehicles-PT-V80P50N10.tgz
mv BridgeAndVehicles-PT-V80P50N10 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 ;