Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2024-input.r026-smll-171620167200219.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2024-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 2-5568
Executing tool itstools
Input is AutonomousCar-PT-01a, examination is LTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r026-smll-171620167200219
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 440K
-rw-r--r-- 1 mcc users 5.4K May 14 13:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 53K May 14 13:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.0K May 14 13:22 CTLFireability.txt
-rw-r--r-- 1 mcc users 44K May 14 13:22 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.2K Apr 22 14:28 LTLCardinality.txt
-rw-r--r-- 1 mcc users 22K Apr 22 14:28 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.1K Apr 22 14:28 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K Apr 22 14:28 LTLFireability.xml
-rw-r--r-- 1 mcc users 15K Apr 12 17:51 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 178K Apr 12 17:51 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 5.1K Apr 12 17:51 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 37K Apr 12 17:51 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Apr 22 14:28 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Apr 22 14:28 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 18 16:42 equiv_col
-rw-r--r-- 1 mcc users 4 May 18 16:42 instance
-rw-r--r-- 1 mcc users 6 May 18 16:42 iscolored
-rw-r--r-- 1 mcc users 11K May 18 16:42 model.pnml

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

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

The expected result is a vector of booleans
BOOL_VECTOR

here is the order used to build the result vector(from text file)
FORMULA_NAME AutonomousCar-PT-01a-LTLCardinality-00
FORMULA_NAME AutonomousCar-PT-01a-LTLCardinality-01
FORMULA_NAME AutonomousCar-PT-01a-LTLCardinality-02
FORMULA_NAME AutonomousCar-PT-01a-LTLCardinality-03
FORMULA_NAME AutonomousCar-PT-01a-LTLCardinality-04
FORMULA_NAME AutonomousCar-PT-01a-LTLCardinality-05
FORMULA_NAME AutonomousCar-PT-01a-LTLCardinality-06
FORMULA_NAME AutonomousCar-PT-01a-LTLCardinality-07
FORMULA_NAME AutonomousCar-PT-01a-LTLCardinality-08
FORMULA_NAME AutonomousCar-PT-01a-LTLCardinality-09
FORMULA_NAME AutonomousCar-PT-01a-LTLCardinality-10
FORMULA_NAME AutonomousCar-PT-01a-LTLCardinality-11
FORMULA_NAME AutonomousCar-PT-01a-LTLCardinality-12
FORMULA_NAME AutonomousCar-PT-01a-LTLCardinality-13
FORMULA_NAME AutonomousCar-PT-01a-LTLCardinality-14
FORMULA_NAME AutonomousCar-PT-01a-LTLCardinality-15

=== Now, execution of the tool begins

BK_START 1716319414313

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=LTLCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=AutonomousCar-PT-01a
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
LTLCardinality PT
Running Version 202405141337
[2024-05-21 19:23:36] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, LTLCardinality, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2024-05-21 19:23:36] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2024-05-21 19:23:36] [INFO ] Load time of PNML (sax parser for PT used): 198 ms
[2024-05-21 19:23:36] [INFO ] Transformed 25 places.
[2024-05-21 19:23:36] [INFO ] Transformed 35 transitions.
[2024-05-21 19:23:36] [INFO ] Found NUPN structural information;
[2024-05-21 19:23:36] [INFO ] Parsed PT model containing 25 places and 35 transitions and 143 arcs in 520 ms.
Parsed 16 properties from file /home/mcc/execution/LTLCardinality.xml in 29 ms.
Working with output stream class java.io.PrintStream
Initial state reduction rules removed 2 formulas.
Ensure Unique test removed 9 transitions
Reduce redundant transitions removed 9 transitions.
FORMULA AutonomousCar-PT-01a-LTLCardinality-00 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA AutonomousCar-PT-01a-LTLCardinality-01 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA AutonomousCar-PT-01a-LTLCardinality-09 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA AutonomousCar-PT-01a-LTLCardinality-12 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Support contains 17 out of 25 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 25/25 places, 26/26 transitions.
Applied a total of 0 rules in 15 ms. Remains 25 /25 variables (removed 0) and now considering 26/26 (removed 0) transitions.
[2024-05-21 19:23:37] [INFO ] Flow matrix only has 25 transitions (discarded 1 similar events)
// Phase 1: matrix 25 rows 25 cols
[2024-05-21 19:23:37] [INFO ] Computed 6 invariants in 7 ms
[2024-05-21 19:23:37] [INFO ] Implicit Places using invariants in 227 ms returned []
[2024-05-21 19:23:37] [INFO ] Flow matrix only has 25 transitions (discarded 1 similar events)
[2024-05-21 19:23:37] [INFO ] Invariant cache hit.
[2024-05-21 19:23:37] [INFO ] State equation strengthened by 7 read => feed constraints.
[2024-05-21 19:23:37] [INFO ] Implicit Places using invariants and state equation in 93 ms returned []
Implicit Place search using SMT with State Equation took 371 ms to find 0 implicit places.
Running 25 sub problems to find dead transitions.
[2024-05-21 19:23:37] [INFO ] Flow matrix only has 25 transitions (discarded 1 similar events)
[2024-05-21 19:23:37] [INFO ] Invariant cache hit.
[2024-05-21 19:23:37] [INFO ] State equation strengthened by 7 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/24 variables, 24/24 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/24 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 2 (OVERLAPS) 1/25 variables, 6/30 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/25 variables, 1/31 constraints. Problems are: Problem set: 0 solved, 25 unsolved
[2024-05-21 19:23:37] [INFO ] Deduced a trap composed of 7 places in 69 ms of which 16 ms to minimize.
[2024-05-21 19:23:38] [INFO ] Deduced a trap composed of 6 places in 60 ms of which 2 ms to minimize.
[2024-05-21 19:23:38] [INFO ] Deduced a trap composed of 7 places in 32 ms of which 1 ms to minimize.
[2024-05-21 19:23:38] [INFO ] Deduced a trap composed of 6 places in 32 ms of which 1 ms to minimize.
[2024-05-21 19:23:38] [INFO ] Deduced a trap composed of 6 places in 29 ms of which 1 ms to minimize.
At refinement iteration 4 (INCLUDED_ONLY) 0/25 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/25 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 6 (OVERLAPS) 24/49 variables, 25/61 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/49 variables, 6/67 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/49 variables, 0/67 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 9 (OVERLAPS) 1/50 variables, 1/68 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/50 variables, 0/68 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 11 (OVERLAPS) 0/50 variables, 0/68 constraints. Problems are: Problem set: 0 solved, 25 unsolved
No progress, stopping.
After SMT solving in domain Real declared 50/50 variables, and 68 constraints, problems are : Problem set: 0 solved, 25 unsolved in 1076 ms.
Refiners :[Domain max(s): 25/25 constraints, Positive P Invariants (semi-flows): 6/6 constraints, State Equation: 25/25 constraints, ReadFeed: 7/7 constraints, PredecessorRefiner: 25/25 constraints, Known Traps: 5/5 constraints]
Escalating to Integer solving :Problem set: 0 solved, 25 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/24 variables, 24/24 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/24 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 2 (OVERLAPS) 1/25 variables, 6/30 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/25 variables, 1/31 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/25 variables, 5/36 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/25 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 6 (OVERLAPS) 24/49 variables, 25/61 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/49 variables, 6/67 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/49 variables, 25/92 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/49 variables, 0/92 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 10 (OVERLAPS) 1/50 variables, 1/93 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/50 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 12 (OVERLAPS) 0/50 variables, 0/93 constraints. Problems are: Problem set: 0 solved, 25 unsolved
No progress, stopping.
After SMT solving in domain Int declared 50/50 variables, and 93 constraints, problems are : Problem set: 0 solved, 25 unsolved in 644 ms.
Refiners :[Domain max(s): 25/25 constraints, Positive P Invariants (semi-flows): 6/6 constraints, State Equation: 25/25 constraints, ReadFeed: 7/7 constraints, PredecessorRefiner: 25/25 constraints, Known Traps: 5/5 constraints]
After SMT, in 1806ms problems are : Problem set: 0 solved, 25 unsolved
Search for dead transitions found 0 dead transitions in 1850ms
Finished structural reductions in LTL mode , in 1 iterations and 2270 ms. Remains : 25/25 places, 26/26 transitions.
Support contains 17 out of 25 places after structural reductions.
[2024-05-21 19:23:39] [INFO ] Flatten gal took : 27 ms
[2024-05-21 19:23:39] [INFO ] Flatten gal took : 9 ms
[2024-05-21 19:23:39] [INFO ] Input system was already deterministic with 26 transitions.
RANDOM walk for 40000 steps (3508 resets) in 839 ms. (47 steps per ms) remains 1/16 properties
BEST_FIRST walk for 40002 steps (1289 resets) in 299 ms. (133 steps per ms) remains 1/1 properties
[2024-05-21 19:23:40] [INFO ] Flow matrix only has 25 transitions (discarded 1 similar events)
[2024-05-21 19:23:40] [INFO ] Invariant cache hit.
[2024-05-21 19:23:40] [INFO ] State equation strengthened by 7 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/2 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Problem AtomicPropp15 is UNSAT
After SMT solving in domain Real declared 9/50 variables, and 4 constraints, problems are : Problem set: 1 solved, 0 unsolved in 28 ms.
Refiners :[Domain max(s): 2/25 constraints, Positive P Invariants (semi-flows): 2/6 constraints, State Equation: 0/25 constraints, ReadFeed: 0/7 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints]
After SMT, in 32ms problems are : Problem set: 1 solved, 0 unsolved
Skipping Parikh replay, no witness traces provided.
FORMULA AutonomousCar-PT-01a-LTLCardinality-04 FALSE TECHNIQUES REACHABILITY_KNOWLEDGE
FORMULA AutonomousCar-PT-01a-LTLCardinality-06 FALSE TECHNIQUES REACHABILITY_KNOWLEDGE
Successfully simplified 1 atomic propositions for a total of 10 simplifications.
FORMULA AutonomousCar-PT-01a-LTLCardinality-15 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Computed a total of 3 stabilizing places and 2 stable transitions
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G(F(p0)))'
Support contains 2 out of 25 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 25/25 places, 26/26 transitions.
Reduce places removed 1 places and 1 transitions.
Reduce places removed 1 places and 0 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 0 with 2 rules applied. Total rules applied 2 place count 23 transition count 24
Reduce places removed 1 places and 0 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 1 with 2 rules applied. Total rules applied 4 place count 22 transition count 23
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 5 place count 21 transition count 23
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 7 place count 19 transition count 20
Iterating global reduction 3 with 2 rules applied. Total rules applied 9 place count 19 transition count 20
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 3 with 4 rules applied. Total rules applied 13 place count 17 transition count 18
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 15 place count 16 transition count 18
Applied a total of 15 rules in 42 ms. Remains 16 /25 variables (removed 9) and now considering 18/26 (removed 8) transitions.
// Phase 1: matrix 18 rows 16 cols
[2024-05-21 19:23:40] [INFO ] Computed 4 invariants in 1 ms
[2024-05-21 19:23:40] [INFO ] Implicit Places using invariants in 32 ms returned []
[2024-05-21 19:23:40] [INFO ] Invariant cache hit.
[2024-05-21 19:23:40] [INFO ] State equation strengthened by 1 read => feed constraints.
[2024-05-21 19:23:40] [INFO ] Implicit Places using invariants and state equation in 45 ms returned [12, 14]
Discarding 2 places :
Implicit Place search using SMT with State Equation took 81 ms to find 2 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 14/25 places, 18/26 transitions.
Applied a total of 0 rules in 2 ms. Remains 14 /14 variables (removed 0) and now considering 18/18 (removed 0) transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 126 ms. Remains : 14/25 places, 18/26 transitions.
Stuttering acceptance computed with spot in 242 ms :[(NOT p0), (NOT p0)]
Running random walk in product with property : AutonomousCar-PT-01a-LTLCardinality-02
Stuttering criterion allowed to conclude after 28 steps with 10 reset in 2 ms.
FORMULA AutonomousCar-PT-01a-LTLCardinality-02 FALSE TECHNIQUES STUTTER_TEST
Treatment of property AutonomousCar-PT-01a-LTLCardinality-02 finished in 481 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(X(X(F(p0)))))'
Support contains 2 out of 25 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 25/25 places, 26/26 transitions.
Discarding 2 places :
Symmetric choice reduction at 0 with 2 rule applications. Total rules 2 place count 23 transition count 23
Iterating global reduction 0 with 2 rules applied. Total rules applied 4 place count 23 transition count 23
Applied a total of 4 rules in 2 ms. Remains 23 /25 variables (removed 2) and now considering 23/26 (removed 3) transitions.
// Phase 1: matrix 23 rows 23 cols
[2024-05-21 19:23:40] [INFO ] Computed 5 invariants in 1 ms
[2024-05-21 19:23:41] [INFO ] Implicit Places using invariants in 64 ms returned [1]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 66 ms to find 1 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 22/25 places, 23/26 transitions.
Applied a total of 0 rules in 1 ms. Remains 22 /22 variables (removed 0) and now considering 23/23 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 69 ms. Remains : 22/25 places, 23/26 transitions.
Stuttering acceptance computed with spot in 156 ms :[(NOT p0), (NOT p0), (NOT p0), (NOT p0)]
Running random walk in product with property : AutonomousCar-PT-01a-LTLCardinality-03
Stuttering criterion allowed to conclude after 15 steps with 1 reset in 0 ms.
FORMULA AutonomousCar-PT-01a-LTLCardinality-03 FALSE TECHNIQUES STUTTER_TEST
Treatment of property AutonomousCar-PT-01a-LTLCardinality-03 finished in 245 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F(G((X(X(F(p1)))||p0))))'
Support contains 3 out of 25 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 25/25 places, 26/26 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 2 transitions
Trivial Post-agglo rules discarded 2 transitions
Performed 2 trivial Post agglomeration. Transition count delta: 2
Iterating post reduction 0 with 2 rules applied. Total rules applied 2 place count 25 transition count 24
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 4 place count 23 transition count 24
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 5 place count 22 transition count 22
Iterating global reduction 2 with 1 rules applied. Total rules applied 6 place count 22 transition count 22
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 2 with 4 rules applied. Total rules applied 10 place count 20 transition count 20
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 2 with 2 rules applied. Total rules applied 12 place count 19 transition count 20
Applied a total of 12 rules in 6 ms. Remains 19 /25 variables (removed 6) and now considering 20/26 (removed 6) transitions.
[2024-05-21 19:23:41] [INFO ] Flow matrix only has 19 transitions (discarded 1 similar events)
// Phase 1: matrix 19 rows 19 cols
[2024-05-21 19:23:41] [INFO ] Computed 6 invariants in 1 ms
[2024-05-21 19:23:41] [INFO ] Implicit Places using invariants in 54 ms returned [1]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 55 ms to find 1 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 18/25 places, 20/26 transitions.
Applied a total of 0 rules in 1 ms. Remains 18 /18 variables (removed 0) and now considering 20/20 (removed 0) transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 65 ms. Remains : 18/25 places, 20/26 transitions.
Stuttering acceptance computed with spot in 86 ms :[(AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1))]
Running random walk in product with property : AutonomousCar-PT-01a-LTLCardinality-05
Product exploration explored 100000 steps with 1 reset in 389 ms.
Product exploration explored 100000 steps with 3 reset in 227 ms.
Computed a total of 2 stabilizing places and 3 stable transitions
Computed a total of 2 stabilizing places and 3 stable transitions
Knowledge obtained : [(AND p0 p1), (X (AND p0 (NOT p1))), (X (NOT (AND (NOT p0) (NOT p1)))), (X p0), (X (NOT p1)), (X (X (NOT (AND p0 (NOT p1))))), (X (X (NOT (AND (NOT p0) (NOT p1))))), (X (X p0)), (X (X p1))]
False Knowledge obtained : []
Knowledge based reduction with 9 factoid took 369 ms. Reduced automaton from 2 states, 4 edges and 2 AP (stutter insensitive) to 2 states, 4 edges and 2 AP (stutter insensitive).
Stuttering acceptance computed with spot in 79 ms :[(AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1))]
RANDOM walk for 76 steps (9 resets) in 6 ms. (10 steps per ms) remains 0/4 properties
Knowledge obtained : [(AND p0 p1), (X (AND p0 (NOT p1))), (X (NOT (AND (NOT p0) (NOT p1)))), (X p0), (X (NOT p1)), (X (X (NOT (AND p0 (NOT p1))))), (X (X (NOT (AND (NOT p0) (NOT p1))))), (X (X p0)), (X (X p1))]
False Knowledge obtained : [(F (NOT p1)), (F (NOT (OR (NOT p0) p1))), (F (NOT p0)), (F (NOT (OR p0 p1)))]
Knowledge based reduction with 9 factoid took 248 ms. Reduced automaton from 2 states, 4 edges and 2 AP (stutter insensitive) to 2 states, 4 edges and 2 AP (stutter insensitive).
Stuttering acceptance computed with spot in 80 ms :[(AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1))]
Stuttering acceptance computed with spot in 76 ms :[(AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1))]
Support contains 3 out of 18 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 18/18 places, 20/20 transitions.
Applied a total of 0 rules in 1 ms. Remains 18 /18 variables (removed 0) and now considering 20/20 (removed 0) transitions.
[2024-05-21 19:23:42] [INFO ] Flow matrix only has 19 transitions (discarded 1 similar events)
// Phase 1: matrix 19 rows 18 cols
[2024-05-21 19:23:42] [INFO ] Computed 5 invariants in 1 ms
[2024-05-21 19:23:42] [INFO ] Implicit Places using invariants in 43 ms returned []
[2024-05-21 19:23:42] [INFO ] Flow matrix only has 19 transitions (discarded 1 similar events)
[2024-05-21 19:23:42] [INFO ] Invariant cache hit.
[2024-05-21 19:23:43] [INFO ] State equation strengthened by 1 read => feed constraints.
[2024-05-21 19:23:43] [INFO ] Implicit Places using invariants and state equation in 45 ms returned [13, 16]
Discarding 2 places :
Implicit Place search using SMT with State Equation took 91 ms to find 2 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 16/18 places, 20/20 transitions.
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 0 with 1 Pre rules applied. Total rules applied 0 place count 16 transition count 19
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 0 with 2 rules applied. Total rules applied 2 place count 15 transition count 19
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 0 with 2 rules applied. Total rules applied 4 place count 14 transition count 18
Applied a total of 4 rules in 8 ms. Remains 14 /16 variables (removed 2) and now considering 18/20 (removed 2) transitions.
[2024-05-21 19:23:43] [INFO ] Flow matrix only has 17 transitions (discarded 1 similar events)
// Phase 1: matrix 17 rows 14 cols
[2024-05-21 19:23:43] [INFO ] Computed 3 invariants in 1 ms
[2024-05-21 19:23:43] [INFO ] Implicit Places using invariants in 32 ms returned []
[2024-05-21 19:23:43] [INFO ] Flow matrix only has 17 transitions (discarded 1 similar events)
[2024-05-21 19:23:43] [INFO ] Invariant cache hit.
[2024-05-21 19:23:43] [INFO ] State equation strengthened by 2 read => feed constraints.
[2024-05-21 19:23:43] [INFO ] Implicit Places using invariants and state equation in 38 ms returned []
Implicit Place search using SMT with State Equation took 73 ms to find 0 implicit places.
Starting structural reductions in SI_LTL mode, iteration 2 : 14/18 places, 18/20 transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 174 ms. Remains : 14/18 places, 18/20 transitions.
Computed a total of 5 stabilizing places and 6 stable transitions
Computed a total of 5 stabilizing places and 6 stable transitions
Knowledge obtained : [(AND p0 p1), (X (AND p0 (NOT p1))), (X (NOT (AND (NOT p0) (NOT p1)))), (X p0), (X (NOT p1)), (X (X (NOT (AND p0 (NOT p1))))), (X (X (NOT (AND (NOT p0) (NOT p1))))), (X (X p0)), (X (X p1))]
False Knowledge obtained : []
Knowledge based reduction with 9 factoid took 145 ms. Reduced automaton from 2 states, 4 edges and 2 AP (stutter insensitive) to 2 states, 4 edges and 2 AP (stutter insensitive).
Stuttering acceptance computed with spot in 103 ms :[(AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1))]
RANDOM walk for 55 steps (7 resets) in 5 ms. (9 steps per ms) remains 0/4 properties
Knowledge obtained : [(AND p0 p1), (X (AND p0 (NOT p1))), (X (NOT (AND (NOT p0) (NOT p1)))), (X p0), (X (NOT p1)), (X (X (NOT (AND p0 (NOT p1))))), (X (X (NOT (AND (NOT p0) (NOT p1))))), (X (X p0)), (X (X p1))]
False Knowledge obtained : [(F (NOT p1)), (F (NOT (OR (NOT p0) p1))), (F (NOT p0)), (F (NOT (OR p0 p1)))]
Knowledge based reduction with 9 factoid took 312 ms. Reduced automaton from 2 states, 4 edges and 2 AP (stutter insensitive) to 2 states, 4 edges and 2 AP (stutter insensitive).
Stuttering acceptance computed with spot in 81 ms :[(AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1))]
Stuttering acceptance computed with spot in 80 ms :[(AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1))]
Stuttering acceptance computed with spot in 74 ms :[(AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1))]
Product exploration explored 100000 steps with 0 reset in 77 ms.
Product exploration explored 100000 steps with 8 reset in 222 ms.
Built C files in :
/tmp/ltsmin7616251713857884561
[2024-05-21 19:23:44] [INFO ] Computing symmetric may disable matrix : 18 transitions.
[2024-05-21 19:23:44] [INFO ] Computation of Complete disable matrix. took 2 ms. Total solver calls (SAT/UNSAT): 0(0/0)
[2024-05-21 19:23:44] [INFO ] Computing symmetric may enable matrix : 18 transitions.
[2024-05-21 19:23:44] [INFO ] Computation of Complete enable matrix. took 0 ms. Total solver calls (SAT/UNSAT): 0(0/0)
[2024-05-21 19:23:44] [INFO ] Computing Do-Not-Accords matrix : 18 transitions.
[2024-05-21 19:23:44] [INFO ] Computation of Completed DNA matrix. took 0 ms. Total solver calls (SAT/UNSAT): 0(0/0)
[2024-05-21 19:23:44] [INFO ] Built C files in 22ms conformant to PINS (ltsmin variant)in folder :/tmp/ltsmin7616251713857884561
Running compilation step : cd /tmp/ltsmin7616251713857884561;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202405141337/bin/limit_time.pl' '3' 'gcc' '-c' '-I/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202405141337/bin/include/' '-I.' '-std=c99' '-fPIC' '-O0' 'model.c'
Compilation finished in 389 ms.
Running link step : cd /tmp/ltsmin7616251713857884561;'gcc' '-shared' '-o' 'gal.so' 'model.o'
Link finished in 51 ms.
Running LTSmin : cd /tmp/ltsmin7616251713857884561;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202405141337/bin/pins2lts-mc-linux64' './gal.so' '--threads=8' '-p' '--pins-guards' '--when' '--hoa' '/tmp/stateBased9568232825990144378.hoa' '--buchi-type=spotba'
LTSmin run took 182 ms.
FORMULA AutonomousCar-PT-01a-LTLCardinality-05 FALSE TECHNIQUES PARTIAL_ORDER EXPLICIT LTSMIN SAT_SMT
Treatment of property AutonomousCar-PT-01a-LTLCardinality-05 finished in 3719 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(X(F(p0))))'
Support contains 2 out of 25 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 25/25 places, 26/26 transitions.
Discarding 2 places :
Symmetric choice reduction at 0 with 2 rule applications. Total rules 2 place count 23 transition count 23
Iterating global reduction 0 with 2 rules applied. Total rules applied 4 place count 23 transition count 23
Applied a total of 4 rules in 2 ms. Remains 23 /25 variables (removed 2) and now considering 23/26 (removed 3) transitions.
// Phase 1: matrix 23 rows 23 cols
[2024-05-21 19:23:44] [INFO ] Computed 5 invariants in 2 ms
[2024-05-21 19:23:45] [INFO ] Implicit Places using invariants in 130 ms returned [1]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 132 ms to find 1 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 22/25 places, 23/26 transitions.
Applied a total of 0 rules in 7 ms. Remains 22 /22 variables (removed 0) and now considering 23/23 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 154 ms. Remains : 22/25 places, 23/26 transitions.
Stuttering acceptance computed with spot in 153 ms :[(NOT p0), (NOT p0), (NOT p0)]
Running random walk in product with property : AutonomousCar-PT-01a-LTLCardinality-07
Product exploration explored 100000 steps with 33333 reset in 276 ms.
Product exploration explored 100000 steps with 33333 reset in 297 ms.
Computed a total of 2 stabilizing places and 2 stable transitions
Computed a total of 2 stabilizing places and 2 stable transitions
Knowledge obtained : [p0, (X (X p0))]
False Knowledge obtained : []
Property proved to be true thanks to knowledge (Minato strategy)
Knowledge based reduction with 2 factoid took 26 ms. Reduced automaton from 3 states, 3 edges and 1 AP (stutter sensitive) to 1 states, 0 edges and 0 AP (stutter insensitive).
FORMULA AutonomousCar-PT-01a-LTLCardinality-07 TRUE TECHNIQUES KNOWLEDGE
Treatment of property AutonomousCar-PT-01a-LTLCardinality-07 finished in 940 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G(F((G(p1)||p0))))'
Support contains 4 out of 25 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 25/25 places, 26/26 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 25 transition count 25
Reduce places removed 1 places and 0 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 1 with 2 rules applied. Total rules applied 3 place count 24 transition count 24
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 4 place count 23 transition count 24
Discarding 1 places :
Symmetric choice reduction at 3 with 1 rule applications. Total rules 5 place count 22 transition count 23
Iterating global reduction 3 with 1 rules applied. Total rules applied 6 place count 22 transition count 23
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 3 with 2 rules applied. Total rules applied 8 place count 21 transition count 22
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 10 place count 20 transition count 22
Applied a total of 10 rules in 6 ms. Remains 20 /25 variables (removed 5) and now considering 22/26 (removed 4) transitions.
// Phase 1: matrix 22 rows 20 cols
[2024-05-21 19:23:45] [INFO ] Computed 5 invariants in 2 ms
[2024-05-21 19:23:46] [INFO ] Implicit Places using invariants in 103 ms returned [1]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 116 ms to find 1 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 19/25 places, 22/26 transitions.
Applied a total of 0 rules in 2 ms. Remains 19 /19 variables (removed 0) and now considering 22/22 (removed 0) transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 124 ms. Remains : 19/25 places, 22/26 transitions.
Stuttering acceptance computed with spot in 87 ms :[(AND (NOT p1) (NOT p0)), (AND (NOT p1) (NOT p0))]
Running random walk in product with property : AutonomousCar-PT-01a-LTLCardinality-08
Product exploration explored 100000 steps with 1 reset in 70 ms.
Product exploration explored 100000 steps with 1 reset in 60 ms.
Computed a total of 2 stabilizing places and 3 stable transitions
Computed a total of 2 stabilizing places and 3 stable transitions
Knowledge obtained : [(AND p1 p0), (X (NOT (AND (NOT p1) (NOT p0)))), (X (NOT (AND p1 (NOT p0)))), (X p0), (X p1), (X (X (NOT (AND (NOT p1) (NOT p0))))), (X (X (NOT (AND p1 (NOT p0))))), (X (X p0)), (X (X p1))]
False Knowledge obtained : []
Knowledge based reduction with 9 factoid took 178 ms. Reduced automaton from 2 states, 4 edges and 2 AP (stutter insensitive) to 2 states, 4 edges and 2 AP (stutter insensitive).
Stuttering acceptance computed with spot in 95 ms :[(AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1))]
RANDOM walk for 40000 steps (4380 resets) in 404 ms. (98 steps per ms) remains 1/4 properties
BEST_FIRST walk for 40004 steps (1458 resets) in 104 ms. (380 steps per ms) remains 1/1 properties
// Phase 1: matrix 22 rows 19 cols
[2024-05-21 19:23:46] [INFO ] Computed 4 invariants in 1 ms
[2024-05-21 19:23:46] [INFO ] State equation strengthened by 1 read => feed constraints.
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/4 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 13/17 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/17 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 2/19 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/19 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 21/40 variables, 19/23 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/40 variables, 0/23 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 1/41 variables, 1/24 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/41 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 0/41 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 41/41 variables, and 24 constraints, problems are : Problem set: 0 solved, 1 unsolved in 72 ms.
Refiners :[Positive P Invariants (semi-flows): 4/4 constraints, State Equation: 19/19 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/4 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 13/17 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
[2024-05-21 19:23:46] [INFO ] Deduced a trap composed of 7 places in 33 ms of which 2 ms to minimize.
[2024-05-21 19:23:47] [INFO ] Deduced a trap composed of 7 places in 55 ms of which 1 ms to minimize.
[2024-05-21 19:23:47] [INFO ] Deduced a trap composed of 5 places in 42 ms of which 1 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/17 variables, 3/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/17 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 2/19 variables, 1/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
[2024-05-21 19:23:47] [INFO ] Deduced a trap composed of 5 places in 31 ms of which 1 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/19 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/19 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 21/40 variables, 19/27 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/40 variables, 1/28 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/40 variables, 0/28 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 1/41 variables, 1/29 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/41 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 0/41 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 41/41 variables, and 29 constraints, problems are : Problem set: 0 solved, 1 unsolved in 332 ms.
Refiners :[Positive P Invariants (semi-flows): 4/4 constraints, State Equation: 19/19 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 4/4 constraints]
After SMT, in 413ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 5 ms.
Support contains 4 out of 19 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 19/19 places, 22/22 transitions.
Graph (complete) has 59 edges and 19 vertex of which 18 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.1 ms
Discarding 1 places :
Also discarding 1 output transitions
Drop transitions (Output transitions of discarded places.) removed 1 transitions
Drop transitions (Empty/Sink Transition effects.) removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 18 transition count 20
Free-agglomeration rule applied 1 times.
Iterating global reduction 1 with 1 rules applied. Total rules applied 3 place count 18 transition count 19
Reduce places removed 1 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 5 place count 17 transition count 18
Partial Free-agglomeration rule applied 2 times.
Drop transitions (Partial Free agglomeration) removed 2 transitions
Iterating global reduction 2 with 2 rules applied. Total rules applied 7 place count 17 transition count 18
Applied a total of 7 rules in 14 ms. Remains 17 /19 variables (removed 2) and now considering 18/22 (removed 4) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 14 ms. Remains : 17/19 places, 18/22 transitions.
RANDOM walk for 40000 steps (4199 resets) in 105 ms. (377 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (1588 resets) in 107 ms. (370 steps per ms) remains 1/1 properties
Probably explored full state space saw : 63 states, properties seen :0
Probabilistic random walk after 165 steps, saw 63 distinct states, run finished after 12 ms. (steps per millisecond=13 ) properties seen :0
Explored full state space saw : 63 states, properties seen :0
Exhaustive walk after 165 steps, saw 63 distinct states, run finished after 3 ms. (steps per millisecond=55 ) properties seen :0
Found 1 invariant AP formulas.
Knowledge obtained : [(AND p1 p0), (X (NOT (AND (NOT p1) (NOT p0)))), (X (NOT (AND p1 (NOT p0)))), (X p0), (X p1), (X (X (NOT (AND (NOT p1) (NOT p0))))), (X (X (NOT (AND p1 (NOT p0))))), (X (X p0)), (X (X p1)), (G (OR p0 p1))]
False Knowledge obtained : [(F (NOT p1)), (F (NOT (OR p0 (NOT p1)))), (F (NOT p0))]
Property proved to be true thanks to knowledge (Minato strategy)
Knowledge based reduction with 10 factoid took 110 ms. Reduced automaton from 2 states, 4 edges and 2 AP (stutter insensitive) to 1 states, 0 edges and 0 AP (stutter insensitive).
FORMULA AutonomousCar-PT-01a-LTLCardinality-08 TRUE TECHNIQUES KNOWLEDGE
Treatment of property AutonomousCar-PT-01a-LTLCardinality-08 finished in 1513 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F(G(p0)))'
Support contains 4 out of 25 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 25/25 places, 26/26 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 2 transitions
Trivial Post-agglo rules discarded 2 transitions
Performed 2 trivial Post agglomeration. Transition count delta: 2
Iterating post reduction 0 with 2 rules applied. Total rules applied 2 place count 25 transition count 24
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 4 place count 23 transition count 24
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 5 place count 22 transition count 23
Iterating global reduction 2 with 1 rules applied. Total rules applied 6 place count 22 transition count 23
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 2 with 4 rules applied. Total rules applied 10 place count 20 transition count 21
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 2 with 2 rules applied. Total rules applied 12 place count 19 transition count 21
Applied a total of 12 rules in 7 ms. Remains 19 /25 variables (removed 6) and now considering 21/26 (removed 5) transitions.
// Phase 1: matrix 21 rows 19 cols
[2024-05-21 19:23:47] [INFO ] Computed 5 invariants in 2 ms
[2024-05-21 19:23:47] [INFO ] Implicit Places using invariants in 70 ms returned [1]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 71 ms to find 1 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 18/25 places, 21/26 transitions.
Applied a total of 0 rules in 18 ms. Remains 18 /18 variables (removed 0) and now considering 21/21 (removed 0) transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 108 ms. Remains : 18/25 places, 21/26 transitions.
Stuttering acceptance computed with spot in 36 ms :[(NOT p0)]
Running random walk in product with property : AutonomousCar-PT-01a-LTLCardinality-10
Stuttering criterion allowed to conclude after 3 steps with 0 reset in 0 ms.
FORMULA AutonomousCar-PT-01a-LTLCardinality-10 FALSE TECHNIQUES STUTTER_TEST
Treatment of property AutonomousCar-PT-01a-LTLCardinality-10 finished in 164 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(G(p0)))'
Support contains 2 out of 25 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 25/25 places, 26/26 transitions.
Discarding 2 places :
Symmetric choice reduction at 0 with 2 rule applications. Total rules 2 place count 23 transition count 23
Iterating global reduction 0 with 2 rules applied. Total rules applied 4 place count 23 transition count 23
Applied a total of 4 rules in 1 ms. Remains 23 /25 variables (removed 2) and now considering 23/26 (removed 3) transitions.
// Phase 1: matrix 23 rows 23 cols
[2024-05-21 19:23:47] [INFO ] Computed 5 invariants in 2 ms
[2024-05-21 19:23:47] [INFO ] Implicit Places using invariants in 49 ms returned [1]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 62 ms to find 1 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 22/25 places, 23/26 transitions.
Applied a total of 0 rules in 1 ms. Remains 22 /22 variables (removed 0) and now considering 23/23 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 64 ms. Remains : 22/25 places, 23/26 transitions.
Stuttering acceptance computed with spot in 119 ms :[true, (NOT p0), (NOT p0)]
Running random walk in product with property : AutonomousCar-PT-01a-LTLCardinality-11
Entered a terminal (fully accepting) state of product in 1 steps with 0 reset in 0 ms.
FORMULA AutonomousCar-PT-01a-LTLCardinality-11 FALSE TECHNIQUES STUTTER_TEST
Treatment of property AutonomousCar-PT-01a-LTLCardinality-11 finished in 200 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F(G(p0)))'
Support contains 2 out of 25 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 25/25 places, 26/26 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 2 transitions
Trivial Post-agglo rules discarded 2 transitions
Performed 2 trivial Post agglomeration. Transition count delta: 2
Iterating post reduction 0 with 2 rules applied. Total rules applied 2 place count 25 transition count 24
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 4 place count 23 transition count 24
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 6 place count 21 transition count 21
Iterating global reduction 2 with 2 rules applied. Total rules applied 8 place count 21 transition count 21
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 2 with 4 rules applied. Total rules applied 12 place count 19 transition count 19
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 2 with 2 rules applied. Total rules applied 14 place count 18 transition count 19
Applied a total of 14 rules in 4 ms. Remains 18 /25 variables (removed 7) and now considering 19/26 (removed 7) transitions.
// Phase 1: matrix 19 rows 18 cols
[2024-05-21 19:23:47] [INFO ] Computed 5 invariants in 1 ms
[2024-05-21 19:23:47] [INFO ] Implicit Places using invariants in 91 ms returned [1]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 93 ms to find 1 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 17/25 places, 19/26 transitions.
Applied a total of 0 rules in 1 ms. Remains 17 /17 variables (removed 0) and now considering 19/19 (removed 0) transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 98 ms. Remains : 17/25 places, 19/26 transitions.
Stuttering acceptance computed with spot in 73 ms :[(NOT p0)]
Running random walk in product with property : AutonomousCar-PT-01a-LTLCardinality-13
Product exploration explored 100000 steps with 0 reset in 121 ms.
Product exploration explored 100000 steps with 1 reset in 135 ms.
Computed a total of 2 stabilizing places and 3 stable transitions
Computed a total of 2 stabilizing places and 3 stable transitions
Knowledge obtained : [p0, (X (NOT p0)), (X (X (NOT p0)))]
False Knowledge obtained : []
Knowledge based reduction with 3 factoid took 159 ms. Reduced automaton from 1 states, 2 edges and 1 AP (stutter insensitive) to 1 states, 2 edges and 1 AP (stutter insensitive).
Stuttering acceptance computed with spot in 49 ms :[(NOT p0)]
RANDOM walk for 4 steps (0 resets) in 4 ms. (0 steps per ms) remains 0/1 properties
Knowledge obtained : [p0, (X (NOT p0)), (X (X (NOT p0)))]
False Knowledge obtained : [(F (NOT p0))]
Knowledge based reduction with 3 factoid took 188 ms. Reduced automaton from 1 states, 2 edges and 1 AP (stutter insensitive) to 1 states, 2 edges and 1 AP (stutter insensitive).
Stuttering acceptance computed with spot in 41 ms :[(NOT p0)]
Stuttering acceptance computed with spot in 72 ms :[(NOT p0)]
Support contains 2 out of 17 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 17/17 places, 19/19 transitions.
Applied a total of 0 rules in 3 ms. Remains 17 /17 variables (removed 0) and now considering 19/19 (removed 0) transitions.
// Phase 1: matrix 19 rows 17 cols
[2024-05-21 19:23:48] [INFO ] Computed 4 invariants in 1 ms
[2024-05-21 19:23:48] [INFO ] Implicit Places using invariants in 119 ms returned []
[2024-05-21 19:23:48] [INFO ] Invariant cache hit.
[2024-05-21 19:23:48] [INFO ] State equation strengthened by 1 read => feed constraints.
[2024-05-21 19:23:49] [INFO ] Implicit Places using invariants and state equation in 101 ms returned []
Implicit Place search using SMT with State Equation took 234 ms to find 0 implicit places.
[2024-05-21 19:23:49] [INFO ] Redundant transitions in 51 ms returned []
Running 18 sub problems to find dead transitions.
[2024-05-21 19:23:49] [INFO ] Invariant cache hit.
[2024-05-21 19:23:49] [INFO ] State equation strengthened by 1 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/16 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 1 (OVERLAPS) 1/17 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 18 unsolved
[2024-05-21 19:23:49] [INFO ] Deduced a trap composed of 5 places in 22 ms of which 0 ms to minimize.
[2024-05-21 19:23:49] [INFO ] Deduced a trap composed of 5 places in 21 ms of which 0 ms to minimize.
[2024-05-21 19:23:49] [INFO ] Deduced a trap composed of 5 places in 22 ms of which 1 ms to minimize.
[2024-05-21 19:23:49] [INFO ] Deduced a trap composed of 4 places in 21 ms of which 0 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/17 variables, 4/8 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/17 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 4 (OVERLAPS) 18/35 variables, 17/25 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/35 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 6 (OVERLAPS) 1/36 variables, 1/26 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/36 variables, 0/26 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 8 (OVERLAPS) 0/36 variables, 0/26 constraints. Problems are: Problem set: 0 solved, 18 unsolved
No progress, stopping.
After SMT solving in domain Real declared 36/36 variables, and 26 constraints, problems are : Problem set: 0 solved, 18 unsolved in 413 ms.
Refiners :[Positive P Invariants (semi-flows): 4/4 constraints, State Equation: 17/17 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 18/18 constraints, Known Traps: 4/4 constraints]
Escalating to Integer solving :Problem set: 0 solved, 18 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/16 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 1 (OVERLAPS) 1/17 variables, 4/4 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/17 variables, 4/8 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/17 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 4 (OVERLAPS) 18/35 variables, 17/25 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/35 variables, 18/43 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/35 variables, 0/43 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 7 (OVERLAPS) 1/36 variables, 1/44 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/36 variables, 0/44 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 9 (OVERLAPS) 0/36 variables, 0/44 constraints. Problems are: Problem set: 0 solved, 18 unsolved
No progress, stopping.
After SMT solving in domain Int declared 36/36 variables, and 44 constraints, problems are : Problem set: 0 solved, 18 unsolved in 332 ms.
Refiners :[Positive P Invariants (semi-flows): 4/4 constraints, State Equation: 17/17 constraints, ReadFeed: 1/1 constraints, PredecessorRefiner: 18/18 constraints, Known Traps: 4/4 constraints]
After SMT, in 760ms problems are : Problem set: 0 solved, 18 unsolved
Search for dead transitions found 0 dead transitions in 761ms
Finished structural reductions in SI_LTL mode , in 1 iterations and 1059 ms. Remains : 17/17 places, 19/19 transitions.
Computed a total of 2 stabilizing places and 3 stable transitions
Computed a total of 2 stabilizing places and 3 stable transitions
Knowledge obtained : [p0, (X (NOT p0)), (X (X (NOT p0)))]
False Knowledge obtained : []
Knowledge based reduction with 3 factoid took 100 ms. Reduced automaton from 1 states, 2 edges and 1 AP (stutter insensitive) to 1 states, 2 edges and 1 AP (stutter insensitive).
Stuttering acceptance computed with spot in 47 ms :[(NOT p0)]
RANDOM walk for 4 steps (0 resets) in 4 ms. (0 steps per ms) remains 0/1 properties
Knowledge obtained : [p0, (X (NOT p0)), (X (X (NOT p0)))]
False Knowledge obtained : [(F (NOT p0))]
Knowledge based reduction with 3 factoid took 115 ms. Reduced automaton from 1 states, 2 edges and 1 AP (stutter insensitive) to 1 states, 2 edges and 1 AP (stutter insensitive).
Stuttering acceptance computed with spot in 35 ms :[(NOT p0)]
Stuttering acceptance computed with spot in 38 ms :[(NOT p0)]
Stuttering acceptance computed with spot in 74 ms :[(NOT p0)]
Stuttering criterion allowed to conclude after 4 steps with 0 reset in 0 ms.
FORMULA AutonomousCar-PT-01a-LTLCardinality-13 FALSE TECHNIQUES STUTTER_TEST
Treatment of property AutonomousCar-PT-01a-LTLCardinality-13 finished in 2539 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((G(p0)||F(p1)))'
Support contains 2 out of 25 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 25/25 places, 26/26 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 2 transitions
Trivial Post-agglo rules discarded 2 transitions
Performed 2 trivial Post agglomeration. Transition count delta: 2
Iterating post reduction 0 with 2 rules applied. Total rules applied 2 place count 25 transition count 24
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 4 place count 23 transition count 24
Discarding 2 places :
Symmetric choice reduction at 2 with 2 rule applications. Total rules 6 place count 21 transition count 21
Iterating global reduction 2 with 2 rules applied. Total rules applied 8 place count 21 transition count 21
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 2 with 4 rules applied. Total rules applied 12 place count 19 transition count 19
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 2 with 2 rules applied. Total rules applied 14 place count 18 transition count 19
Applied a total of 14 rules in 9 ms. Remains 18 /25 variables (removed 7) and now considering 19/26 (removed 7) transitions.
// Phase 1: matrix 19 rows 18 cols
[2024-05-21 19:23:50] [INFO ] Computed 5 invariants in 1 ms
[2024-05-21 19:23:50] [INFO ] Implicit Places using invariants in 55 ms returned [1]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 66 ms to find 1 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 17/25 places, 19/26 transitions.
Applied a total of 0 rules in 1 ms. Remains 17 /17 variables (removed 0) and now considering 19/19 (removed 0) transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 76 ms. Remains : 17/25 places, 19/26 transitions.
Stuttering acceptance computed with spot in 106 ms :[(NOT p1), (AND (NOT p1) (NOT p0))]
Running random walk in product with property : AutonomousCar-PT-01a-LTLCardinality-14
Product exploration explored 100000 steps with 50000 reset in 96 ms.
Product exploration explored 100000 steps with 50000 reset in 135 ms.
Computed a total of 2 stabilizing places and 3 stable transitions
Computed a total of 2 stabilizing places and 3 stable transitions
Knowledge obtained : [(AND (NOT p1) (NOT p0)), (X (NOT (AND p0 (NOT p1)))), (X (NOT (AND (NOT p0) (NOT p1)))), (X (NOT p0)), (X p1), (X (X (NOT (AND p0 (NOT p1))))), (X (X (NOT (AND (NOT p0) (NOT p1))))), (X (X (NOT p0))), (X (X p1))]
False Knowledge obtained : []
Property proved to be true thanks to knowledge (Minato strategy)
Knowledge based reduction with 9 factoid took 28 ms. Reduced automaton from 2 states, 3 edges and 2 AP (stutter insensitive) to 1 states, 0 edges and 0 AP (stutter insensitive).
FORMULA AutonomousCar-PT-01a-LTLCardinality-14 TRUE TECHNIQUES KNOWLEDGE
Treatment of property AutonomousCar-PT-01a-LTLCardinality-14 finished in 470 ms.
All properties solved by simple procedures.
Total runtime 14584 ms.

BK_STOP 1716319430870

--------------------
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
+ [[ LTLCardinality = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution LTLCardinality -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
+ export PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ export LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
+ LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
++ perl -pe 's/.*\.//g'
++ sed s/.jar//
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202405141337.jar
+ VERSION=202405141337
+ echo 'Running Version 202405141337'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination LTLCardinality -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="AutonomousCar-PT-01a"
export BK_EXAMINATION="LTLCardinality"
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 2-5568"
echo " Executing tool itstools"
echo " Input is AutonomousCar-PT-01a, examination is LTLCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r026-smll-171620167200219"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/AutonomousCar-PT-01a.tgz
mv AutonomousCar-PT-01a execution
cd execution
if [ "LTLCardinality" = "ReachabilityDeadlock" ] || [ "LTLCardinality" = "UpperBounds" ] || [ "LTLCardinality" = "QuasiLiveness" ] || [ "LTLCardinality" = "StableMarking" ] || [ "LTLCardinality" = "Liveness" ] || [ "LTLCardinality" = "OneSafe" ] || [ "LTLCardinality" = "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 [ "LTLCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "LTLCardinality" != "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 "LTLCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property LTLCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "LTLCardinality.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 '' LTLCardinality.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "LTLCardinality" = "ReachabilityDeadlock" ] || [ "LTLCardinality" = "QuasiLiveness" ] || [ "LTLCardinality" = "StableMarking" ] || [ "LTLCardinality" = "Liveness" ] || [ "LTLCardinality" = "OneSafe" ] ; then
echo "FORMULA_NAME LTLCardinality"
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 ;