MCC'2026- Execution of r194-tall-177969914300697

About the Execution of ITS-Tools for Peterson-PT-2

Execution Summary
Max Memory Used (MB)	Time wait (ms)	CPU Usage (ms)	I/O Wait (ms)	Computed Result	Execution Status
497.071	60085.00	77580.00	1154.90	FTTTTTFTFFTTTTFF	normal

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.r194-tall-177969914300697.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 Peterson-PT-2, examination is CTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r194-tall-177969914300697
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 1.1M
-rw-r--r-- 1 mcc users 22K Mar 8 07:10 CTLCardinality.txt
-rw-r--r-- 1 mcc users 128K Mar 8 07:10 CTLCardinality.xml
-rw-r--r-- 1 mcc users 21K Mar 8 07:10 CTLFireability.txt
-rw-r--r-- 1 mcc users 125K Mar 8 07:10 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Mar 3 18:30 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.5K Mar 3 18:30 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 12K Mar 16 08:28 LTLCardinality.txt
-rw-r--r-- 1 mcc users 50K Mar 16 08:28 LTLCardinality.xml
-rw-r--r-- 1 mcc users 7.1K Mar 16 08:28 LTLFireability.txt
-rw-r--r-- 1 mcc users 35K Mar 16 08:28 LTLFireability.xml
-rw-r--r-- 1 mcc users 27K Mar 8 07:10 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 178K Mar 8 07:10 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 44K Mar 8 07:10 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 245K Mar 8 07:10 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 3.7K Mar 16 08:28 UpperBounds.txt
-rw-r--r-- 1 mcc users 7.9K Mar 16 08:28 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 2 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 100K 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 Peterson-PT-2-CTLCardinality-2024-00
FORMULA_NAME Peterson-PT-2-CTLCardinality-2024-01
FORMULA_NAME Peterson-PT-2-CTLCardinality-2024-02
FORMULA_NAME Peterson-PT-2-CTLCardinality-2024-03
FORMULA_NAME Peterson-PT-2-CTLCardinality-2024-04
FORMULA_NAME Peterson-PT-2-CTLCardinality-2024-05
FORMULA_NAME Peterson-PT-2-CTLCardinality-2024-06
FORMULA_NAME Peterson-PT-2-CTLCardinality-2024-07
FORMULA_NAME Peterson-PT-2-CTLCardinality-2024-08
FORMULA_NAME Peterson-PT-2-CTLCardinality-2024-09
FORMULA_NAME Peterson-PT-2-CTLCardinality-2024-10
FORMULA_NAME Peterson-PT-2-CTLCardinality-2024-11
FORMULA_NAME Peterson-PT-2-CTLCardinality-2024-12
FORMULA_NAME Peterson-PT-2-CTLCardinality-2024-13
FORMULA_NAME Peterson-PT-2-CTLCardinality-2024-14
FORMULA_NAME Peterson-PT-2-CTLCardinality-2024-15

=== Now, execution of the tool begins

BK_START 1779817682067

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=CTLCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=Peterson-PT-2
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
CTLCardinality PT
Running Version 202604301425
[2026-05-26 17:48:03] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, CTLCardinality, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2026-05-26 17:48:03] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-26 17:48:03] [INFO ] Load time of PNML (sax parser for PT used): 80 ms
[2026-05-26 17:48:03] [INFO ] Transformed 102 places.
[2026-05-26 17:48:03] [INFO ] Transformed 126 transitions.
[2026-05-26 17:48:03] [INFO ] Found NUPN structural information;
[2026-05-26 17:48:03] [INFO ] Parsed PT model containing 102 places and 126 transitions and 384 arcs in 181 ms.
Parsed 16 properties from file /home/mcc/execution/CTLCardinality.xml in 18 ms.
Initial state reduction rules removed 1 formulas.
FORMULA Peterson-PT-2-CTLCardinality-2024-04 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Peterson-PT-2-CTLCardinality-2024-10 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Peterson-PT-2-CTLCardinality-2024-14 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Support contains 92 out of 102 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 102/102 places, 126/126 transitions.
Applied a total of 0 rules in 8 ms. Remains 102 /102 variables (removed 0) and now considering 126/126 (removed 0) transitions.
[2026-05-26 17:48:03] [INFO ] Flow matrix only has 120 transitions (discarded 6 similar events)
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-8029347533378743632.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-9975906519139297801.kers'
[2026-05-26 17:48:03] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-8029347533378743632.kers, --Pflows, --basisKERS=/tmp/petrispot-output-9975906519139297801.kers]
Culling duplicate invariants (modulo rational): removing 6 columns.
Culled 6 columns in 0 ms.
// Phase 1: matrix 120 rows 96 cols 264 entries
Finished phase 1 with 88 SingleSign rule and 3 generalized
[2026-05-26 17:48:03] [INFO ] Computed 11 invariants in 0 ms
Computed 11 P flows in 1 ms.
Exported basis to /tmp/petrispot-output-9975906519139297801.kers
Total runtime 1 ms.
[2026-05-26 17:48:03] [INFO ] Implicit Places using invariants in 261 ms returned []
[2026-05-26 17:48:03] [INFO ] Flow matrix only has 120 transitions (discarded 6 similar events)
[2026-05-26 17:48:03] [INFO ] Invariant cache hit.
[2026-05-26 17:48:03] [INFO ] State equation strengthened by 22 read => feed constraints.
[2026-05-26 17:48:04] [INFO ] Implicit Places using invariants and state equation in 173 ms returned []
Implicit Place search using SMT with State Equation took 470 ms to find 0 implicit places.
Running 123 sub problems to find dead transitions.
[2026-05-26 17:48:04] [INFO ] Flow matrix only has 120 transitions (discarded 6 similar events)
[2026-05-26 17:48:04] [INFO ] Invariant cache hit.
[2026-05-26 17:48:04] [INFO ] State equation strengthened by 22 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/99 variables, 99/99 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/99 variables, 5/104 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/99 variables, 3/107 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/99 variables, 19/126 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/99 variables, 1/127 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/99 variables, 1/128 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/99 variables, 0/128 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 7 (OVERLAPS) 3/102 variables, 3/131 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/102 variables, 3/134 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/102 variables, 0/134 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 10 (OVERLAPS) 120/222 variables, 102/236 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/222 variables, 22/258 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/222 variables, 0/258 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 13 (OVERLAPS) 0/222 variables, 0/258 constraints. Problems are: Problem set: 0 solved, 123 unsolved
No progress, stopping.
After SMT solving in domain Real declared 222/222 variables, and 258 constraints, problems are : Problem set: 0 solved, 123 unsolved in 11266 ms.
Refiners :[Domain max(s): 102/102 constraints, Positive P Invariants (semi-flows): 8/8 constraints, Generalized P Invariants (flows): 3/3 constraints, State Equation: 102/102 constraints, ReadFeed: 22/22 constraints, PredecessorRefiner: 123/123 constraints, Known Traps: 21/21 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 123 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/99 variables, 99/99 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/99 variables, 5/104 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/99 variables, 3/107 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/99 variables, 21/128 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/99 variables, 0/128 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 5 (OVERLAPS) 3/102 variables, 3/131 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/102 variables, 3/134 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/102 variables, 0/134 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 8 (OVERLAPS) 120/222 variables, 102/236 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/222 variables, 22/258 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/222 variables, 123/381 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/222 variables, 0/381 constraints. Problems are: Problem set: 0 solved, 123 unsolved
At refinement iteration 12 (OVERLAPS) 0/222 variables, 0/381 constraints. Problems are: Problem set: 0 solved, 123 unsolved
No progress, stopping.
After SMT solving in domain Int declared 222/222 variables, and 381 constraints, problems are : Problem set: 0 solved, 123 unsolved in 10492 ms.
Refiners :[Domain max(s): 102/102 constraints, Positive P Invariants (semi-flows): 8/8 constraints, Generalized P Invariants (flows): 3/3 constraints, State Equation: 102/102 constraints, ReadFeed: 22/22 constraints, PredecessorRefiner: 123/123 constraints, Known Traps: 21/21 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 21834ms problems are : Problem set: 0 solved, 123 unsolved
Search for dead transitions found 0 dead transitions in 21850ms
Finished structural reductions in LTL mode , in 1 iterations and 22363 ms. Remains : 102/102 places, 126/126 transitions.
Starting structural reductions in LTL mode, iteration 0 : 102/102 places, 126/126 transitions.
Applied a total of 0 rules in 1 ms. Remains 102 /102 variables (removed 0) and now considering 126/126 (removed 0) transitions.
[2026-05-26 17:48:25] [INFO ] Flow matrix only has 120 transitions (discarded 6 similar events)
[2026-05-26 17:48:25] [INFO ] Invariant cache hit.
[2026-05-26 17:48:25] [INFO ] Implicit Places using invariants in 54 ms returned []
[2026-05-26 17:48:25] [INFO ] Flow matrix only has 120 transitions (discarded 6 similar events)
[2026-05-26 17:48:25] [INFO ] Invariant cache hit.
[2026-05-26 17:48:26] [INFO ] State equation strengthened by 22 read => feed constraints.
[2026-05-26 17:48:26] [INFO ] Implicit Places using invariants and state equation in 74 ms returned []
Implicit Place search using SMT with State Equation took 130 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 131 ms. Remains : 102/102 places, 126/126 transitions.
Support contains 92 out of 102 places after structural reductions.
[2026-05-26 17:48:26] [INFO ] Flatten gal took : 29 ms
[2026-05-26 17:48:26] [INFO ] Flatten gal took : 12 ms
[2026-05-26 17:48:26] [INFO ] Input system was already deterministic with 126 transitions.
RANDOM walk for 40000 steps (8 resets) in 1888 ms. (21 steps per ms) remains 26/50 properties
BEST_FIRST walk for 4004 steps (8 resets) in 55 ms. (71 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 68 ms. (58 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 36 ms. (108 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 34 ms. (114 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 30 ms. (129 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 16 ms. (235 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 15 ms. (250 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 37 ms. (105 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 22 ms. (174 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 17 ms. (222 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 16 ms. (235 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 18 ms. (210 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 30 ms. (129 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 23 ms. (166 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 15 ms. (250 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 24 ms. (160 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 28 ms. (138 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 18 ms. (210 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 28 ms. (138 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 16 ms. (235 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 42 ms. (93 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 17 ms. (222 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 26 ms. (148 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 18 ms. (210 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 23 ms. (166 steps per ms) remains 26/26 properties
BEST_FIRST walk for 4004 steps (8 resets) in 15 ms. (250 steps per ms) remains 26/26 properties
[2026-05-26 17:48:27] [INFO ] Flow matrix only has 120 transitions (discarded 6 similar events)
[2026-05-26 17:48:27] [INFO ] Invariant cache hit.
[2026-05-26 17:48:27] [INFO ] State equation strengthened by 22 read => feed constraints.
Excessive predecessor constraint size, skipping predecessor.
Problem AtomicPropp12 is UNSAT
Problem AtomicPropp0 is UNSAT
Problem AtomicPropp1 is UNSAT
Problem AtomicPropp3 is UNSAT
Problem AtomicPropp4 is UNSAT
Problem AtomicPropp6 is UNSAT
Problem AtomicPropp8 is UNSAT
Problem AtomicPropp9 is UNSAT
Problem AtomicPropp10 is UNSAT
Problem AtomicPropp15 is UNSAT
Problem AtomicPropp16 is UNSAT
Problem AtomicPropp17 is UNSAT
Problem AtomicPropp18 is UNSAT
Problem AtomicPropp21 is UNSAT
Problem AtomicPropp22 is UNSAT
Problem AtomicPropp25 is UNSAT
Problem AtomicPropp27 is UNSAT
Problem AtomicPropp28 is UNSAT
Problem AtomicPropp29 is UNSAT
Problem AtomicPropp30 is UNSAT
Problem AtomicPropp31 is UNSAT
Problem AtomicPropp33 is UNSAT
Problem AtomicPropp35 is UNSAT
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/90 variables, 90/90 constraints. Problems are: Problem set: 23 solved, 3 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/90 variables, 0/90 constraints. Problems are: Problem set: 23 solved, 3 unsolved
At refinement iteration 2 (OVERLAPS) 3/93 variables, 3/93 constraints. Problems are: Problem set: 23 solved, 3 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/93 variables, 3/96 constraints. Problems are: Problem set: 23 solved, 3 unsolved
Problem AtomicPropp14 is UNSAT
At refinement iteration 4 (INCLUDED_ONLY) 0/93 variables, 3/99 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/93 variables, 0/99 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 6 (OVERLAPS) 3/96 variables, 3/102 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/96 variables, 3/105 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/96 variables, 0/105 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 9 (OVERLAPS) 120/216 variables, 96/201 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/216 variables, 22/223 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/216 variables, 0/223 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 12 (OVERLAPS) 6/222 variables, 6/229 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/222 variables, 6/235 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/222 variables, 2/237 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/222 variables, 0/237 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 16 (OVERLAPS) 0/222 variables, 0/237 constraints. Problems are: Problem set: 24 solved, 2 unsolved
No progress, stopping.
After SMT solving in domain Real declared 222/222 variables, and 237 constraints, problems are : Problem set: 24 solved, 2 unsolved in 246 ms.
Refiners :[Domain max(s): 102/102 constraints, Positive P Invariants (semi-flows): 8/8 constraints, Generalized P Invariants (flows): 3/3 constraints, State Equation: 102/102 constraints, ReadFeed: 22/22 constraints, PredecessorRefiner: 25/25 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 24 solved, 2 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/9 variables, 9/9 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/9 variables, 0/9 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 2 (OVERLAPS) 81/90 variables, 3/12 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/90 variables, 81/93 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/90 variables, 0/93 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 5 (OVERLAPS) 6/96 variables, 6/99 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/96 variables, 6/105 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/96 variables, 0/105 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 8 (OVERLAPS) 120/216 variables, 96/201 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/216 variables, 22/223 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/216 variables, 1/224 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/216 variables, 0/224 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 12 (OVERLAPS) 6/222 variables, 6/230 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/222 variables, 6/236 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/222 variables, 2/238 constraints. Problems are: Problem set: 24 solved, 2 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/222 variables, 1/239 constraints. Problems are: Problem set: 24 solved, 2 unsolved
Problem AtomicPropp11 is UNSAT
Problem AtomicPropp34 is UNSAT
After SMT solving in domain Int declared 222/222 variables, and 242 constraints, problems are : Problem set: 26 solved, 0 unsolved in 352 ms.
Refiners :[Domain max(s): 102/102 constraints, Positive P Invariants (semi-flows): 8/8 constraints, Generalized P Invariants (flows): 3/3 constraints, State Equation: 102/102 constraints, ReadFeed: 22/22 constraints, PredecessorRefiner: 2/25 constraints, Known Traps: 3/3 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 634ms problems are : Problem set: 26 solved, 0 unsolved
Skipping Parikh replay, no witness traces provided.
Successfully simplified 26 atomic propositions for a total of 12 simplifications.
Initial state reduction rules removed 1 formulas.
FORMULA Peterson-PT-2-CTLCardinality-2024-00 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Peterson-PT-2-CTLCardinality-2024-01 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2026-05-26 17:48:27] [INFO ] Flatten gal took : 13 ms
[2026-05-26 17:48:27] [INFO ] Initial state reduction rules for CTL removed 1 formulas.
FORMULA Peterson-PT-2-CTLCardinality-2024-07 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
[2026-05-26 17:48:27] [INFO ] Flatten gal took : 7 ms
[2026-05-26 17:48:27] [INFO ] Input system was already deterministic with 126 transitions.
Support contains 57 out of 102 places (down from 92) after GAL structural reductions.
FORMULA Peterson-PT-2-CTLCardinality-2024-02 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Peterson-PT-2-CTLCardinality-2024-05 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Computed a total of 0 stabilizing places and 0 stable transitions
Starting structural reductions in SI_CTL mode, iteration 0 : 102/102 places, 126/126 transitions.
Performed 12 Post agglomeration using F-continuation condition.Transition count delta: 12
Iterating post reduction 0 with 12 rules applied. Total rules applied 12 place count 102 transition count 114
Reduce places removed 12 places and 0 transitions.
Iterating post reduction 1 with 12 rules applied. Total rules applied 24 place count 90 transition count 114
Applied a total of 24 rules in 15 ms. Remains 90 /102 variables (removed 12) and now considering 114/126 (removed 12) transitions.
[2026-05-26 17:48:27] [INFO ] Flow matrix only has 108 transitions (discarded 6 similar events)
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-13756000782664011829.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-10162212811201819966.kers'
[2026-05-26 17:48:27] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-13756000782664011829.kers, --Pflows, --basisKERS=/tmp/petrispot-output-10162212811201819966.kers]
Culling duplicate invariants (modulo rational): removing 6 columns.
Culled 6 columns in 0 ms.
// Phase 1: matrix 108 rows 84 cols 240 entries
Finished phase 1 with 76 SingleSign rule and 3 generalized
[2026-05-26 17:48:27] [INFO ] Computed 11 invariants in 0 ms
Computed 11 P flows in 0 ms.
Exported basis to /tmp/petrispot-output-10162212811201819966.kers
Total runtime 0 ms.
[2026-05-26 17:48:27] [INFO ] Implicit Places using invariants in 63 ms returned []
[2026-05-26 17:48:27] [INFO ] Flow matrix only has 108 transitions (discarded 6 similar events)
[2026-05-26 17:48:27] [INFO ] Invariant cache hit.
[2026-05-26 17:48:28] [INFO ] State equation strengthened by 22 read => feed constraints.
[2026-05-26 17:48:28] [INFO ] Implicit Places using invariants and state equation in 99 ms returned []
Implicit Place search using SMT with State Equation took 166 ms to find 0 implicit places.
[2026-05-26 17:48:28] [INFO ] Redundant transitions in 4 ms returned []
Running 111 sub problems to find dead transitions.
[2026-05-26 17:48:28] [INFO ] Flow matrix only has 108 transitions (discarded 6 similar events)
[2026-05-26 17:48:28] [INFO ] Invariant cache hit.
[2026-05-26 17:48:28] [INFO ] State equation strengthened by 22 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/87 variables, 87/87 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/87 variables, 5/92 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/87 variables, 3/95 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/87 variables, 16/111 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/87 variables, 4/115 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/87 variables, 0/115 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 6 (OVERLAPS) 3/90 variables, 3/118 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/90 variables, 3/121 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/90 variables, 0/121 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 9 (OVERLAPS) 108/198 variables, 90/211 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/198 variables, 22/233 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/198 variables, 1/234 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/198 variables, 0/234 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 13 (OVERLAPS) 0/198 variables, 0/234 constraints. Problems are: Problem set: 0 solved, 111 unsolved
No progress, stopping.
After SMT solving in domain Real declared 198/198 variables, and 234 constraints, problems are : Problem set: 0 solved, 111 unsolved in 8989 ms.
Refiners :[Domain max(s): 90/90 constraints, Positive P Invariants (semi-flows): 8/8 constraints, Generalized P Invariants (flows): 3/3 constraints, State Equation: 90/90 constraints, ReadFeed: 22/22 constraints, PredecessorRefiner: 111/111 constraints, Known Traps: 21/21 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 111 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/87 variables, 87/87 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/87 variables, 5/92 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/87 variables, 3/95 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/87 variables, 21/116 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/87 variables, 0/116 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 5 (OVERLAPS) 3/90 variables, 3/119 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/90 variables, 3/122 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/90 variables, 0/122 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 8 (OVERLAPS) 108/198 variables, 90/212 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/198 variables, 22/234 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/198 variables, 111/345 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/198 variables, 0/345 constraints. Problems are: Problem set: 0 solved, 111 unsolved
At refinement iteration 12 (OVERLAPS) 0/198 variables, 0/345 constraints. Problems are: Problem set: 0 solved, 111 unsolved
No progress, stopping.
After SMT solving in domain Int declared 198/198 variables, and 345 constraints, problems are : Problem set: 0 solved, 111 unsolved in 7723 ms.
Refiners :[Domain max(s): 90/90 constraints, Positive P Invariants (semi-flows): 8/8 constraints, Generalized P Invariants (flows): 3/3 constraints, State Equation: 90/90 constraints, ReadFeed: 22/22 constraints, PredecessorRefiner: 111/111 constraints, Known Traps: 21/21 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 16726ms problems are : Problem set: 0 solved, 111 unsolved
Search for dead transitions found 0 dead transitions in 16727ms
Starting structural reductions in SI_CTL mode, iteration 1 : 90/102 places, 114/126 transitions.
Finished structural reductions in SI_CTL mode , in 1 iterations and 16918 ms. Remains : 90/102 places, 114/126 transitions.
[2026-05-26 17:48:44] [INFO ] Flatten gal took : 8 ms
[2026-05-26 17:48:44] [INFO ] Flatten gal took : 5 ms
[2026-05-26 17:48:44] [INFO ] Input system was already deterministic with 114 transitions.
[2026-05-26 17:48:44] [INFO ] Flatten gal took : 5 ms
[2026-05-26 17:48:44] [INFO ] Flatten gal took : 5 ms
[2026-05-26 17:48:44] [INFO ] Time to serialize gal into /tmp/CTLCardinality9840248081352280606.gal : 3 ms
[2026-05-26 17:48:44] [INFO ] Time to serialize properties into /tmp/CTLCardinality16512033469961862895.ctl : 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-ctl-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/CTLCardinality9840248081352280606.gal' '-t' 'CGAL' '-ctl' '/tmp/CTLCardinality16512033469961862895.ctl' '--gen-order' 'FOLLOW'

its-ctl command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -...284
No direction supplied, using forward translation only.
Parsed 1 CTL formulae.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
reachable,12732,0.18426,11440,2,2923,5,26637,6,0,477,33098,0

Converting to forward existential form...Done !
original formula: AG(((AF(((((((IsEndLoop_0_0_0+IsEndLoop_1_0_0)+(IsEndLoop_2_0_0+IsEndLoop_0_1_0))+((IsEndLoop_1_1_0+IsEndLoop_2_1_0)+(IsEndLoop_0_0_1+IsE...811
=> equivalent forward existential formula: [FwdG((FwdU(Init,TRUE) * !((!(EG(!(((((((IsEndLoop_0_0_0+IsEndLoop_1_0_0)+(IsEndLoop_2_0_0+IsEndLoop_0_1_0))+((I...878
Reverse transition relation is NOT exact ! Due to transitions t4, t5, t6, t25, t26, t28, t41, t42, t43, t59, t60, t63, t64, t65, t66, t75, t76, t77, t78, t...308
(forward)formula 0,1,0.928465,38948,1,0,249,184403,265,121,3117,130458,249
FORMULA Peterson-PT-2-CTLCardinality-2024-03 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is TRUE !

***************************************

Starting structural reductions in LTL mode, iteration 0 : 102/102 places, 126/126 transitions.
Applied a total of 0 rules in 3 ms. Remains 102 /102 variables (removed 0) and now considering 126/126 (removed 0) transitions.
[2026-05-26 17:48:45] [INFO ] Flow matrix only has 120 transitions (discarded 6 similar events)
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-15334248724202324012.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-3478659347891977993.kers'
[2026-05-26 17:48:45] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-15334248724202324012.kers, --Pflows, --basisKERS=/tmp/petrispot-output-3478659347891977993.kers]
Culling duplicate invariants (modulo rational): removing 6 columns.
Culled 6 columns in 0 ms.
// Phase 1: matrix 120 rows 96 cols 264 entries
Finished phase 1 with 88 SingleSign rule and 3 generalized
[2026-05-26 17:48:45] [INFO ] Computed 11 invariants in 0 ms
Computed 11 P flows in 0 ms.
Exported basis to /tmp/petrispot-output-3478659347891977993.kers
Total runtime 0 ms.
[2026-05-26 17:48:45] [INFO ] Implicit Places using invariants in 64 ms returned [85, 87, 88]
Discarding 3 places :
Implicit Place search using SMT only with invariants took 65 ms to find 3 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 99/102 places, 126/126 transitions.
Applied a total of 0 rules in 4 ms. Remains 99 /99 variables (removed 0) and now considering 126/126 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 72 ms. Remains : 99/102 places, 126/126 transitions.
[2026-05-26 17:48:45] [INFO ] Flatten gal took : 5 ms
[2026-05-26 17:48:45] [INFO ] Flatten gal took : 5 ms
[2026-05-26 17:48:45] [INFO ] Input system was already deterministic with 126 transitions.
[2026-05-26 17:48:45] [INFO ] Flatten gal took : 5 ms
[2026-05-26 17:48:45] [INFO ] Flatten gal took : 5 ms
[2026-05-26 17:48:45] [INFO ] Time to serialize gal into /tmp/CTLCardinality9472945149350072809.gal : 3 ms
[2026-05-26 17:48:45] [INFO ] Time to serialize properties into /tmp/CTLCardinality15933203825117555354.ctl : 0 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-ctl-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/CTLCardinality9472945149350072809.gal' '-t' 'CGAL' '-ctl' '/tmp/CTLCardinality15933203825117555354.ctl' '--gen-order' 'FOLLOW'

its-ctl command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -...284
No direction supplied, using forward translation only.
Parsed 1 CTL formulae.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
reachable,20754,0.202732,12988,2,3417,5,32021,6,0,525,39597,0

Converting to forward existential form...Done !
original formula: EF(AX(FALSE))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * !(EX(!(FALSE))))] != FALSE
Reverse transition relation is NOT exact ! Due to transitions t4, t5, t6, t25, t26, t28, t47, t48, t49, t71, t72, t75, t76, t77, t78, t91, t92, t93, t94, t...314
(forward)formula 0,0,0.969454,39920,1,0,254,164001,267,129,2942,133730,258
FORMULA Peterson-PT-2-CTLCardinality-2024-06 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is FALSE !

***************************************

Starting structural reductions in LTL mode, iteration 0 : 102/102 places, 126/126 transitions.
Applied a total of 0 rules in 3 ms. Remains 102 /102 variables (removed 0) and now considering 126/126 (removed 0) transitions.
[2026-05-26 17:48:46] [INFO ] Flow matrix only has 120 transitions (discarded 6 similar events)
[2026-05-26 17:48:46] [INFO ] Invariant cache hit.
[2026-05-26 17:48:46] [INFO ] Implicit Places using invariants in 59 ms returned [85, 87, 88]
Discarding 3 places :
Implicit Place search using SMT only with invariants took 60 ms to find 3 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 99/102 places, 126/126 transitions.
Applied a total of 0 rules in 2 ms. Remains 99 /99 variables (removed 0) and now considering 126/126 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 65 ms. Remains : 99/102 places, 126/126 transitions.
[2026-05-26 17:48:46] [INFO ] Flatten gal took : 4 ms
[2026-05-26 17:48:46] [INFO ] Flatten gal took : 4 ms
[2026-05-26 17:48:47] [INFO ] Input system was already deterministic with 126 transitions.
[2026-05-26 17:48:47] [INFO ] Flatten gal took : 5 ms
[2026-05-26 17:48:47] [INFO ] Flatten gal took : 8 ms
[2026-05-26 17:48:47] [INFO ] Time to serialize gal into /tmp/CTLCardinality18050749071000961399.gal : 1 ms
[2026-05-26 17:48:47] [INFO ] Time to serialize properties into /tmp/CTLCardinality16535595694252980082.ctl : 0 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-ctl-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/CTLCardinality18050749071000961399.gal' '-t' 'CGAL' '-ctl' '/tmp/CTLCardinality16535595694252980082.ctl' '--gen-order' 'FOLLOW'

its-ctl command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -...285
No direction supplied, using forward translation only.
Parsed 1 CTL formulae.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
reachable,20754,0.209414,12976,2,3417,5,32021,6,0,525,39597,0

Converting to forward existential form...Done !
original formula: AG((E(((AX(((TestIdentity_1_0_2==0)||(BeginLoop_2_0_0==1))) + (IsEndLoop_0_1_2==1)) + (BeginLoop_2_1_0==0)) U (EndTurn_0_1==1)) * (((Test...301
=> equivalent forward existential formula: ([(FwdU(Init,TRUE) * !(E(((!(EX(!(((TestIdentity_1_0_2==0)||(BeginLoop_2_0_0==1))))) + (IsEndLoop_0_1_2==1)) + (...483
Reverse transition relation is NOT exact ! Due to transitions t4, t5, t6, t25, t26, t28, t47, t48, t49, t71, t72, t75, t76, t77, t78, t91, t92, t93, t94, t...314
(forward)formula 0,0,4.67869,168308,1,0,433,1.19906e+06,289,297,3062,762765,473
FORMULA Peterson-PT-2-CTLCardinality-2024-08 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is FALSE !

***************************************

Starting structural reductions in LTL mode, iteration 0 : 102/102 places, 126/126 transitions.
Applied a total of 0 rules in 9 ms. Remains 102 /102 variables (removed 0) and now considering 126/126 (removed 0) transitions.
[2026-05-26 17:48:51] [INFO ] Flow matrix only has 120 transitions (discarded 6 similar events)
[2026-05-26 17:48:51] [INFO ] Invariant cache hit.
[2026-05-26 17:48:51] [INFO ] Implicit Places using invariants in 62 ms returned [85, 87, 88]
Discarding 3 places :
Implicit Place search using SMT only with invariants took 63 ms to find 3 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 99/102 places, 126/126 transitions.
Applied a total of 0 rules in 3 ms. Remains 99 /99 variables (removed 0) and now considering 126/126 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 76 ms. Remains : 99/102 places, 126/126 transitions.
[2026-05-26 17:48:51] [INFO ] Flatten gal took : 5 ms
[2026-05-26 17:48:51] [INFO ] Flatten gal took : 4 ms
[2026-05-26 17:48:51] [INFO ] Input system was already deterministic with 126 transitions.
[2026-05-26 17:48:51] [INFO ] Flatten gal took : 4 ms
[2026-05-26 17:48:51] [INFO ] Flatten gal took : 4 ms
[2026-05-26 17:48:51] [INFO ] Time to serialize gal into /tmp/CTLCardinality811004005045148323.gal : 5 ms
[2026-05-26 17:48:51] [INFO ] Time to serialize properties into /tmp/CTLCardinality11829888138109869246.ctl : 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-ctl-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/CTLCardinality811004005045148323.gal' '-t' 'CGAL' '-ctl' '/tmp/CTLCardinality11829888138109869246.ctl' '--gen-order' 'FOLLOW'

its-ctl command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -...283
No direction supplied, using forward translation only.
Parsed 1 CTL formulae.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
reachable,20754,0.210779,12992,2,3417,5,32021,6,0,525,39597,0

Converting to forward existential form...Done !
original formula: EF((AG(EX((Turn_0_2==1))) * (AskForSection_0_1==1)))
=> equivalent forward existential formula: [((FwdU(Init,TRUE) * (AskForSection_0_1==1)) * !(E(TRUE U !(EX((Turn_0_2==1))))))] != FALSE
Reverse transition relation is NOT exact ! Due to transitions t4, t5, t6, t25, t26, t28, t47, t48, t49, t71, t72, t75, t76, t77, t78, t91, t92, t93, t94, t...314
(forward)formula 0,0,2.27591,74980,1,0,278,452723,273,143,3105,270682,294
FORMULA Peterson-PT-2-CTLCardinality-2024-09 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is FALSE !

***************************************

Starting structural reductions in SI_CTL mode, iteration 0 : 102/102 places, 126/126 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 33 transitions
Trivial Post-agglo rules discarded 33 transitions
Performed 33 trivial Post agglomeration. Transition count delta: 33
Iterating post reduction 0 with 33 rules applied. Total rules applied 33 place count 102 transition count 93
Reduce places removed 33 places and 0 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 1 with 34 rules applied. Total rules applied 67 place count 69 transition count 92
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 68 place count 68 transition count 92
Performed 18 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 18 Pre rules applied. Total rules applied 68 place count 68 transition count 74
Deduced a syphon composed of 18 places in 0 ms
Reduce places removed 18 places and 0 transitions.
Iterating global reduction 3 with 36 rules applied. Total rules applied 104 place count 50 transition count 74
Performed 6 Post agglomeration using F-continuation condition.Transition count delta: 6
Deduced a syphon composed of 6 places in 0 ms
Reduce places removed 6 places and 0 transitions.
Iterating global reduction 3 with 12 rules applied. Total rules applied 116 place count 44 transition count 68
Applied a total of 116 rules in 27 ms. Remains 44 /102 variables (removed 58) and now considering 68/126 (removed 58) transitions.
[2026-05-26 17:48:54] [INFO ] Flow matrix only has 62 transitions (discarded 6 similar events)
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-7416861040763836340.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-10238406023977622278.kers'
[2026-05-26 17:48:54] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-7416861040763836340.kers, --Pflows, --basisKERS=/tmp/petrispot-output-10238406023977622278.kers]
Culling duplicate invariants (modulo rational): removing 6 columns.
Culled 6 columns in 0 ms.
// Phase 1: matrix 62 rows 38 cols 148 entries
Finished phase 1 with 30 SingleSign rule and 3 generalized
[2026-05-26 17:48:54] [INFO ] Computed 11 invariants in 0 ms
Computed 11 P flows in 0 ms.
Exported basis to /tmp/petrispot-output-10238406023977622278.kers
Total runtime 0 ms.
[2026-05-26 17:48:54] [INFO ] Implicit Places using invariants in 53 ms returned [33, 35, 36]
Discarding 3 places :
Implicit Place search using SMT only with invariants took 56 ms to find 3 implicit places.
Starting structural reductions in SI_CTL mode, iteration 1 : 41/102 places, 68/126 transitions.
Applied a total of 0 rules in 3 ms. Remains 41 /41 variables (removed 0) and now considering 68/68 (removed 0) transitions.
Finished structural reductions in SI_CTL mode , in 2 iterations and 86 ms. Remains : 41/102 places, 68/126 transitions.
[2026-05-26 17:48:54] [INFO ] Flatten gal took : 3 ms
[2026-05-26 17:48:54] [INFO ] Flatten gal took : 3 ms
[2026-05-26 17:48:54] [INFO ] Input system was already deterministic with 68 transitions.
[2026-05-26 17:48:54] [INFO ] Flatten gal took : 2 ms
[2026-05-26 17:48:54] [INFO ] Flatten gal took : 3 ms
[2026-05-26 17:48:54] [INFO ] Time to serialize gal into /tmp/CTLCardinality12617225401528508842.gal : 1 ms
[2026-05-26 17:48:54] [INFO ] Time to serialize properties into /tmp/CTLCardinality13861133210123690312.ctl : 0 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-ctl-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/CTLCardinality12617225401528508842.gal' '-t' 'CGAL' '-ctl' '/tmp/CTLCardinality13861133210123690312.ctl' '--gen-order' 'FOLLOW'

its-ctl command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -...285
No direction supplied, using forward translation only.
Parsed 1 CTL formulae.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
reachable,1510,0.038609,5676,2,830,5,6498,6,0,235,6414,0

Converting to forward existential form...Done !
original formula: AG(EF(((Turn_1_2==0)||(IsEndLoop_1_0_1==1))))
=> equivalent forward existential formula: [(FwdU(Init,TRUE) * !(E(TRUE U ((Turn_1_2==0)||(IsEndLoop_1_0_1==1)))))] = FALSE
Reverse transition relation is NOT exact ! Due to transitions t0, t12, t13, t16, t17, t18, t19, t28, t29, t30, t42, t43, t46, t47, t48, t50, t51, t52, t53,...294
(forward)formula 0,1,0.207366,13596,1,0,186,56546,157,78,1578,40319,164
FORMULA Peterson-PT-2-CTLCardinality-2024-11 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is TRUE !

***************************************

Starting structural reductions in LTL mode, iteration 0 : 102/102 places, 126/126 transitions.
Applied a total of 0 rules in 2 ms. Remains 102 /102 variables (removed 0) and now considering 126/126 (removed 0) transitions.
[2026-05-26 17:48:54] [INFO ] Flow matrix only has 120 transitions (discarded 6 similar events)
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-4271610098018572275.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-10357696433671711299.kers'
[2026-05-26 17:48:54] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-4271610098018572275.kers, --Pflows, --basisKERS=/tmp/petrispot-output-10357696433671711299.kers]
Culling duplicate invariants (modulo rational): removing 6 columns.
Culled 6 columns in 0 ms.
// Phase 1: matrix 120 rows 96 cols 264 entries
Finished phase 1 with 88 SingleSign rule and 3 generalized
[2026-05-26 17:48:54] [INFO ] Computed 11 invariants in 0 ms
Computed 11 P flows in 0 ms.
Exported basis to /tmp/petrispot-output-10357696433671711299.kers
Total runtime 0 ms.
[2026-05-26 17:48:54] [INFO ] Implicit Places using invariants in 69 ms returned [85, 88]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 70 ms to find 2 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 100/102 places, 126/126 transitions.
Applied a total of 0 rules in 3 ms. Remains 100 /100 variables (removed 0) and now considering 126/126 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 75 ms. Remains : 100/102 places, 126/126 transitions.
[2026-05-26 17:48:54] [INFO ] Flatten gal took : 3 ms
[2026-05-26 17:48:54] [INFO ] Flatten gal took : 4 ms
[2026-05-26 17:48:54] [INFO ] Input system was already deterministic with 126 transitions.
[2026-05-26 17:48:54] [INFO ] Flatten gal took : 4 ms
[2026-05-26 17:48:54] [INFO ] Flatten gal took : 4 ms
[2026-05-26 17:48:54] [INFO ] Time to serialize gal into /tmp/CTLCardinality3495453728552110157.gal : 1 ms
[2026-05-26 17:48:54] [INFO ] Time to serialize properties into /tmp/CTLCardinality3459261523470999588.ctl : 0 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-ctl-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/CTLCardinality3495453728552110157.gal' '-t' 'CGAL' '-ctl' '/tmp/CTLCardinality3459261523470999588.ctl' '--gen-order' 'FOLLOW'

its-ctl command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -...283
No direction supplied, using forward translation only.
Parsed 1 CTL formulae.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
reachable,20754,0.202105,13052,2,3441,5,32132,6,0,529,40078,0

Converting to forward existential form...Done !
original formula: AX(EG((EF((((IsEndLoop_1_0_0==0)&&(BeginLoop_0_1_2==1))||(Idle_2==1))) + ((BeginLoop_0_1_0==0)&&(IsEndLoop_1_1_0==1)))))
=> equivalent forward existential formula: [(EY(Init) * !(EG((E(TRUE U (((IsEndLoop_1_0_0==0)&&(BeginLoop_0_1_2==1))||(Idle_2==1))) + ((BeginLoop_0_1_0==0)...191
Reverse transition relation is NOT exact ! Due to transitions t4, t5, t6, t25, t26, t28, t47, t48, t49, t71, t72, t75, t76, t77, t78, t91, t92, t93, t94, t...314
(forward)formula 0,1,2.57747,94356,1,0,293,585882,277,151,3227,351046,316
FORMULA Peterson-PT-2-CTLCardinality-2024-12 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is TRUE !

***************************************

ITS tools runner thread asked to quit. Dying gracefully.
Starting structural reductions in LTL mode, iteration 0 : 102/102 places, 126/126 transitions.
Applied a total of 0 rules in 2 ms. Remains 102 /102 variables (removed 0) and now considering 126/126 (removed 0) transitions.
[2026-05-26 17:48:57] [INFO ] Flow matrix only has 120 transitions (discarded 6 similar events)
[2026-05-26 17:48:57] [INFO ] Invariant cache hit.
[2026-05-26 17:48:57] [INFO ] Implicit Places using invariants in 60 ms returned [85, 87, 88]
Discarding 3 places :
Implicit Place search using SMT only with invariants took 61 ms to find 3 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 99/102 places, 126/126 transitions.
Applied a total of 0 rules in 3 ms. Remains 99 /99 variables (removed 0) and now considering 126/126 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 67 ms. Remains : 99/102 places, 126/126 transitions.
[2026-05-26 17:48:57] [INFO ] Flatten gal took : 4 ms
[2026-05-26 17:48:57] [INFO ] Flatten gal took : 4 ms
[2026-05-26 17:48:57] [INFO ] Input system was already deterministic with 126 transitions.
[2026-05-26 17:48:57] [INFO ] Flatten gal took : 4 ms
[2026-05-26 17:48:57] [INFO ] Flatten gal took : 4 ms
[2026-05-26 17:48:57] [INFO ] Time to serialize gal into /tmp/CTLCardinality8366176619598250796.gal : 1 ms
[2026-05-26 17:48:57] [INFO ] Time to serialize properties into /tmp/CTLCardinality2855790576577955183.ctl : 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-ctl-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/CTLCardinality8366176619598250796.gal' '-t' 'CGAL' '-ctl' '/tmp/CTLCardinality2855790576577955183.ctl' '--gen-order' 'FOLLOW'

its-ctl command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -...283
No direction supplied, using forward translation only.
Parsed 1 CTL formulae.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
reachable,20754,0.192404,13024,2,3417,5,32021,6,0,525,39597,0

Converting to forward existential form...Done !
original formula: E(EG(AX(AF((TestAlone_0_0_1!=1)))) U A((TestTurn_0_1==1) U EF(!((((CS_2==0)||(BeginLoop_0_0_0==1))||(TestIdentity_2_1_1==1))))))
=> equivalent forward existential formula: [((FwdU(Init,EG(!(EX(!(!(EG(!((TestAlone_0_0_1!=1))))))))) * !(EG(!(E(TRUE U !((((CS_2==0)||(BeginLoop_0_0_0==1)...388
Reverse transition relation is NOT exact ! Due to transitions t4, t5, t6, t25, t26, t28, t47, t48, t49, t71, t72, t75, t76, t77, t78, t91, t92, t93, t94, t...314
Using saturation style SCC detection
Fast SCC detection found a local SCC at level 0
(forward)formula 0,1,4.45806,151544,1,0,481,882487,297,282,3354,698137,516
FORMULA Peterson-PT-2-CTLCardinality-2024-13 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is TRUE !

***************************************

ITS tools runner thread asked to quit. Dying gracefully.
Starting structural reductions in LTL mode, iteration 0 : 102/102 places, 126/126 transitions.
Applied a total of 0 rules in 3 ms. Remains 102 /102 variables (removed 0) and now considering 126/126 (removed 0) transitions.
[2026-05-26 17:49:01] [INFO ] Flow matrix only has 120 transitions (discarded 6 similar events)
[2026-05-26 17:49:01] [INFO ] Invariant cache hit.
[2026-05-26 17:49:01] [INFO ] Implicit Places using invariants in 65 ms returned [85, 87, 88]
Discarding 3 places :
Implicit Place search using SMT only with invariants took 65 ms to find 3 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 99/102 places, 126/126 transitions.
Applied a total of 0 rules in 2 ms. Remains 99 /99 variables (removed 0) and now considering 126/126 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 70 ms. Remains : 99/102 places, 126/126 transitions.
[2026-05-26 17:49:01] [INFO ] Flatten gal took : 4 ms
[2026-05-26 17:49:01] [INFO ] Flatten gal took : 4 ms
[2026-05-26 17:49:01] [INFO ] Input system was already deterministic with 126 transitions.
[2026-05-26 17:49:01] [INFO ] Flatten gal took : 4 ms
[2026-05-26 17:49:01] [INFO ] Flatten gal took : 4 ms
[2026-05-26 17:49:01] [INFO ] Time to serialize gal into /tmp/CTLCardinality17980363740161262194.gal : 1 ms
[2026-05-26 17:49:01] [INFO ] Time to serialize properties into /tmp/CTLCardinality3788277857283852674.ctl : 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-ctl-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/CTLCardinality17980363740161262194.gal' '-t' 'CGAL' '-ctl' '/tmp/CTLCardinality3788277857283852674.ctl' '--gen-order' 'FOLLOW'

its-ctl command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-ctl-linux64 --gc-threshold 2000000 --quiet -...284
No direction supplied, using forward translation only.
Parsed 1 CTL formulae.
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
reachable,20754,0.196727,12988,2,3417,5,32021,6,0,525,39597,0

Converting to forward existential form...Done !
original formula: AX(FALSE)
=> equivalent forward existential formula: [(EY(Init) * !(FALSE))] = FALSE
(forward)formula 0,0,0.199857,12988,1,0,6,32021,7,1,692,39597,1
FORMULA Peterson-PT-2-CTLCardinality-2024-15 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL
Formula is FALSE !

***************************************

[2026-05-26 17:49:02] [INFO ] Flatten gal took : 9 ms
[2026-05-26 17:49:02] [INFO ] Flatten gal took : 3 ms
Total runtime 58860 ms.

BK_STOP 1779817742152

--------------------
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
+ [[ CTLCardinality = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution CTLCardinality -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//
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202604301425.jar
++ perl -pe 's/.*\.//g'
+ VERSION=202604301425
+ echo 'Running Version 202604301425'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination CTLCardinality -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="Peterson-PT-2"
export BK_EXAMINATION="CTLCardinality"
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 Peterson-PT-2, examination is CTLCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r194-tall-177969914300697"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/Peterson-PT-2.tgz
mv Peterson-PT-2 execution
cd execution
if [ "CTLCardinality" = "ReachabilityDeadlock" ] || [ "CTLCardinality" = "UpperBounds" ] || [ "CTLCardinality" = "QuasiLiveness" ] || [ "CTLCardinality" = "StableMarking" ] || [ "CTLCardinality" = "Liveness" ] || [ "CTLCardinality" = "OneSafe" ] || [ "CTLCardinality" = "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 [ "CTLCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "CTLCardinality" != "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 "CTLCardinality.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 '' CTLCardinality.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "CTLCardinality" = "ReachabilityDeadlock" ] || [ "CTLCardinality" = "QuasiLiveness" ] || [ "CTLCardinality" = "StableMarking" ] || [ "CTLCardinality" = "Liveness" ] || [ "CTLCardinality" = "OneSafe" ] ; then
echo "FORMULA_NAME CTLCardinality"
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 ;