fond
Model Checking Contest 2024
14th edition, Geneva, Switzerland, June 25, 2024
Execution of r468-smll-171620167000123
Last Updated
July 7, 2024

About the Execution of LTSMin+red for AutoFlight-PT-05a

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
396.752 14431.00 32220.00 248.90 FTFFFTTFFTFTFTFT normal

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.r468-smll-171620167000123.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 ltsminxred
Input is AutoFlight-PT-05a, examination is LTLCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r468-smll-171620167000123
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 464K
-rw-r--r-- 1 mcc users 5.9K May 14 13:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 63K May 14 13:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.9K May 14 13:22 CTLFireability.txt
-rw-r--r-- 1 mcc users 58K May 14 13:22 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 18 16:42 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.6K May 18 16:42 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.5K Apr 22 14:28 LTLCardinality.txt
-rw-r--r-- 1 mcc users 24K 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 13K Apr 12 22:33 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 140K Apr 12 22:33 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 5.3K Apr 12 22:30 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 38K Apr 12 22:30 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Apr 22 14:28 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K 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 36K 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 AutoFlight-PT-05a-LTLCardinality-00
FORMULA_NAME AutoFlight-PT-05a-LTLCardinality-01
FORMULA_NAME AutoFlight-PT-05a-LTLCardinality-02
FORMULA_NAME AutoFlight-PT-05a-LTLCardinality-03
FORMULA_NAME AutoFlight-PT-05a-LTLCardinality-04
FORMULA_NAME AutoFlight-PT-05a-LTLCardinality-05
FORMULA_NAME AutoFlight-PT-05a-LTLCardinality-06
FORMULA_NAME AutoFlight-PT-05a-LTLCardinality-07
FORMULA_NAME AutoFlight-PT-05a-LTLCardinality-08
FORMULA_NAME AutoFlight-PT-05a-LTLCardinality-09
FORMULA_NAME AutoFlight-PT-05a-LTLCardinality-10
FORMULA_NAME AutoFlight-PT-05a-LTLCardinality-11
FORMULA_NAME AutoFlight-PT-05a-LTLCardinality-12
FORMULA_NAME AutoFlight-PT-05a-LTLCardinality-13
FORMULA_NAME AutoFlight-PT-05a-LTLCardinality-14
FORMULA_NAME AutoFlight-PT-05a-LTLCardinality-15

=== Now, execution of the tool begins

BK_START 1717187049193

Invoking MCC driver with
BK_TOOL=ltsminxred
BK_EXAMINATION=LTLCardinality
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=AutoFlight-PT-05a
BK_MEMORY_CONFINEMENT=16384
Applying reductions before tool ltsmin
Invoking reducer
Running Version 202405141337
[2024-05-31 20:24:11] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, LTLCardinality, -timeout, 360, -rebuildPNML]
[2024-05-31 20:24:11] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2024-05-31 20:24:12] [INFO ] Load time of PNML (sax parser for PT used): 203 ms
[2024-05-31 20:24:12] [INFO ] Transformed 132 places.
[2024-05-31 20:24:12] [INFO ] Transformed 130 transitions.
[2024-05-31 20:24:12] [INFO ] Found NUPN structural information;
[2024-05-31 20:24:12] [INFO ] Parsed PT model containing 132 places and 130 transitions and 420 arcs in 578 ms.
Parsed 16 properties from file /home/mcc/execution/LTLCardinality.xml in 28 ms.
Working with output stream class java.io.PrintStream
Initial state reduction rules removed 2 formulas.
Ensure Unique test removed 25 transitions
Reduce redundant transitions removed 25 transitions.
FORMULA AutoFlight-PT-05a-LTLCardinality-05 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA AutoFlight-PT-05a-LTLCardinality-11 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA AutoFlight-PT-05a-LTLCardinality-15 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA AutoFlight-PT-05a-LTLCardinality-00 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA AutoFlight-PT-05a-LTLCardinality-06 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA AutoFlight-PT-05a-LTLCardinality-13 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Support contains 32 out of 132 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 132/132 places, 105/105 transitions.
Applied a total of 0 rules in 34 ms. Remains 132 /132 variables (removed 0) and now considering 105/105 (removed 0) transitions.
// Phase 1: matrix 105 rows 132 cols
[2024-05-31 20:24:12] [INFO ] Computed 34 invariants in 30 ms
[2024-05-31 20:24:13] [INFO ] Implicit Places using invariants in 794 ms returned [7, 14, 21, 28, 35, 38, 41, 44, 50, 77, 99, 105, 111, 123, 129, 131]
Discarding 16 places :
Implicit Place search using SMT only with invariants took 863 ms to find 16 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 116/132 places, 105/105 transitions.
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 4 place count 112 transition count 101
Iterating global reduction 0 with 4 rules applied. Total rules applied 8 place count 112 transition count 101
Applied a total of 8 rules in 30 ms. Remains 112 /116 variables (removed 4) and now considering 101/105 (removed 4) transitions.
// Phase 1: matrix 101 rows 112 cols
[2024-05-31 20:24:13] [INFO ] Computed 18 invariants in 5 ms
[2024-05-31 20:24:13] [INFO ] Implicit Places using invariants in 146 ms returned []
[2024-05-31 20:24:13] [INFO ] Invariant cache hit.
[2024-05-31 20:24:13] [INFO ] State equation strengthened by 1 read => feed constraints.
[2024-05-31 20:24:13] [INFO ] Implicit Places using invariants and state equation in 263 ms returned []
Implicit Place search using SMT with State Equation took 428 ms to find 0 implicit places.
Starting structural reductions in LTL mode, iteration 2 : 112/132 places, 101/105 transitions.
Finished structural reductions in LTL mode , in 2 iterations and 1399 ms. Remains : 112/132 places, 101/105 transitions.
Support contains 32 out of 112 places after structural reductions.
[2024-05-31 20:24:14] [INFO ] Flatten gal took : 66 ms
[2024-05-31 20:24:14] [INFO ] Flatten gal took : 30 ms
[2024-05-31 20:24:14] [INFO ] Input system was already deterministic with 101 transitions.
RANDOM walk for 40000 steps (1234 resets) in 1739 ms. (22 steps per ms) remains 1/15 properties
BEST_FIRST walk for 40003 steps (162 resets) in 232 ms. (171 steps per ms) remains 1/1 properties
[2024-05-31 20:24:15] [INFO ] Invariant cache hit.
[2024-05-31 20:24:15] [INFO ] State equation strengthened by 1 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Problem AtomicPropp1 is UNSAT
After SMT solving in domain Real declared 5/213 variables, and 2 constraints, problems are : Problem set: 1 solved, 0 unsolved in 63 ms.
Refiners :[Positive P Invariants (semi-flows): 2/18 constraints, State Equation: 0/112 constraints, ReadFeed: 0/1 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints]
After SMT, in 104ms problems are : Problem set: 1 solved, 0 unsolved
Skipping Parikh replay, no witness traces provided.
FORMULA AutoFlight-PT-05a-LTLCardinality-10 FALSE TECHNIQUES REACHABILITY_KNOWLEDGE
FORMULA AutoFlight-PT-05a-LTLCardinality-08 FALSE TECHNIQUES REACHABILITY_KNOWLEDGE
Successfully simplified 1 atomic propositions for a total of 8 simplifications.
FORMULA AutoFlight-PT-05a-LTLCardinality-02 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Computed a total of 2 stabilizing places and 1 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' '!(X(F(p0)))'
Support contains 2 out of 112 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 112/112 places, 101/101 transitions.
Discarding 2 places :
Symmetric choice reduction at 0 with 2 rule applications. Total rules 2 place count 110 transition count 99
Iterating global reduction 0 with 2 rules applied. Total rules applied 4 place count 110 transition count 99
Applied a total of 4 rules in 25 ms. Remains 110 /112 variables (removed 2) and now considering 99/101 (removed 2) transitions.
// Phase 1: matrix 99 rows 110 cols
[2024-05-31 20:24:15] [INFO ] Computed 18 invariants in 8 ms
[2024-05-31 20:24:15] [INFO ] Implicit Places using invariants in 138 ms returned [39, 100]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 142 ms to find 2 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 108/112 places, 99/101 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 107 transition count 98
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 107 transition count 98
Applied a total of 2 rules in 22 ms. Remains 107 /108 variables (removed 1) and now considering 98/99 (removed 1) transitions.
// Phase 1: matrix 98 rows 107 cols
[2024-05-31 20:24:15] [INFO ] Computed 16 invariants in 2 ms
[2024-05-31 20:24:15] [INFO ] Implicit Places using invariants in 123 ms returned []
[2024-05-31 20:24:15] [INFO ] Invariant cache hit.
[2024-05-31 20:24:16] [INFO ] Implicit Places using invariants and state equation in 195 ms returned []
Implicit Place search using SMT with State Equation took 322 ms to find 0 implicit places.
Starting structural reductions in LTL mode, iteration 2 : 107/112 places, 98/101 transitions.
Finished structural reductions in LTL mode , in 2 iterations and 512 ms. Remains : 107/112 places, 98/101 transitions.
Stuttering acceptance computed with spot in 337 ms :[(NOT p0), (NOT p0)]
Running random walk in product with property : AutoFlight-PT-05a-LTLCardinality-01
Product exploration explored 100000 steps with 50000 reset in 726 ms.
Product exploration explored 100000 steps with 50000 reset in 296 ms.
Computed a total of 1 stabilizing places and 1 stable transitions
Computed a total of 1 stabilizing places and 1 stable transitions
Knowledge obtained : [p0, (X p0), (X (X p0))]
False Knowledge obtained : []
Property proved to be true thanks to knowledge (Minato strategy)
Knowledge based reduction with 3 factoid took 34 ms. Reduced automaton from 2 states, 2 edges and 1 AP (stutter sensitive) to 1 states, 0 edges and 0 AP (stutter insensitive).
FORMULA AutoFlight-PT-05a-LTLCardinality-01 TRUE TECHNIQUES KNOWLEDGE
Treatment of property AutoFlight-PT-05a-LTLCardinality-01 finished in 2028 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((p0||X(X(X(F(p0)))))))'
Support contains 1 out of 112 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 112/112 places, 101/101 transitions.
Discarding 2 places :
Symmetric choice reduction at 0 with 2 rule applications. Total rules 2 place count 110 transition count 99
Iterating global reduction 0 with 2 rules applied. Total rules applied 4 place count 110 transition count 99
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 5 place count 109 transition count 98
Iterating global reduction 0 with 1 rules applied. Total rules applied 6 place count 109 transition count 98
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 7 place count 108 transition count 97
Iterating global reduction 0 with 1 rules applied. Total rules applied 8 place count 108 transition count 97
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 9 place count 107 transition count 96
Iterating global reduction 0 with 1 rules applied. Total rules applied 10 place count 107 transition count 96
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 11 place count 106 transition count 95
Iterating global reduction 0 with 1 rules applied. Total rules applied 12 place count 106 transition count 95
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 13 place count 105 transition count 94
Iterating global reduction 0 with 1 rules applied. Total rules applied 14 place count 105 transition count 94
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 15 place count 104 transition count 93
Iterating global reduction 0 with 1 rules applied. Total rules applied 16 place count 104 transition count 93
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 17 place count 103 transition count 92
Iterating global reduction 0 with 1 rules applied. Total rules applied 18 place count 103 transition count 92
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 19 place count 102 transition count 91
Iterating global reduction 0 with 1 rules applied. Total rules applied 20 place count 102 transition count 91
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 21 place count 101 transition count 90
Iterating global reduction 0 with 1 rules applied. Total rules applied 22 place count 101 transition count 90
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 23 place count 100 transition count 89
Iterating global reduction 0 with 1 rules applied. Total rules applied 24 place count 100 transition count 89
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 25 place count 99 transition count 88
Iterating global reduction 0 with 1 rules applied. Total rules applied 26 place count 99 transition count 88
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 27 place count 98 transition count 87
Iterating global reduction 0 with 1 rules applied. Total rules applied 28 place count 98 transition count 87
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 29 place count 97 transition count 86
Iterating global reduction 0 with 1 rules applied. Total rules applied 30 place count 97 transition count 86
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 31 place count 96 transition count 85
Iterating global reduction 0 with 1 rules applied. Total rules applied 32 place count 96 transition count 85
Applied a total of 32 rules in 37 ms. Remains 96 /112 variables (removed 16) and now considering 85/101 (removed 16) transitions.
// Phase 1: matrix 85 rows 96 cols
[2024-05-31 20:24:17] [INFO ] Computed 18 invariants in 5 ms
[2024-05-31 20:24:17] [INFO ] Implicit Places using invariants in 104 ms returned [39, 86]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 107 ms to find 2 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 94/112 places, 85/101 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 93 transition count 84
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 93 transition count 84
Applied a total of 2 rules in 6 ms. Remains 93 /94 variables (removed 1) and now considering 84/85 (removed 1) transitions.
// Phase 1: matrix 84 rows 93 cols
[2024-05-31 20:24:17] [INFO ] Computed 16 invariants in 1 ms
[2024-05-31 20:24:17] [INFO ] Implicit Places using invariants in 96 ms returned []
[2024-05-31 20:24:17] [INFO ] Invariant cache hit.
[2024-05-31 20:24:18] [INFO ] Implicit Places using invariants and state equation in 186 ms returned []
Implicit Place search using SMT with State Equation took 299 ms to find 0 implicit places.
Starting structural reductions in LTL mode, iteration 2 : 93/112 places, 84/101 transitions.
Finished structural reductions in LTL mode , in 2 iterations and 450 ms. Remains : 93/112 places, 84/101 transitions.
Stuttering acceptance computed with spot in 243 ms :[(NOT p0), (NOT p0), (NOT p0), (NOT p0), (NOT p0)]
Running random walk in product with property : AutoFlight-PT-05a-LTLCardinality-03
Stuttering criterion allowed to conclude after 52 steps with 0 reset in 4 ms.
FORMULA AutoFlight-PT-05a-LTLCardinality-03 FALSE TECHNIQUES STUTTER_TEST
Treatment of property AutoFlight-PT-05a-LTLCardinality-03 finished in 727 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(p0)))'
Support contains 2 out of 112 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 112/112 places, 101/101 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 36 transitions
Trivial Post-agglo rules discarded 36 transitions
Performed 36 trivial Post agglomeration. Transition count delta: 36
Iterating post reduction 0 with 36 rules applied. Total rules applied 36 place count 112 transition count 65
Reduce places removed 36 places and 0 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 1 with 37 rules applied. Total rules applied 73 place count 76 transition count 64
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 74 place count 75 transition count 64
Performed 4 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 4 Pre rules applied. Total rules applied 74 place count 75 transition count 60
Deduced a syphon composed of 4 places in 0 ms
Reduce places removed 4 places and 0 transitions.
Iterating global reduction 3 with 8 rules applied. Total rules applied 82 place count 71 transition count 60
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 84 place count 69 transition count 58
Iterating global reduction 3 with 2 rules applied. Total rules applied 86 place count 69 transition count 58
Performed 12 Post agglomeration using F-continuation condition.Transition count delta: 12
Deduced a syphon composed of 12 places in 0 ms
Reduce places removed 12 places and 0 transitions.
Iterating global reduction 3 with 24 rules applied. Total rules applied 110 place count 57 transition count 46
Applied a total of 110 rules in 49 ms. Remains 57 /112 variables (removed 55) and now considering 46/101 (removed 55) transitions.
// Phase 1: matrix 46 rows 57 cols
[2024-05-31 20:24:18] [INFO ] Computed 18 invariants in 1 ms
[2024-05-31 20:24:18] [INFO ] Implicit Places using invariants in 95 ms returned [21, 22, 23, 26, 27]
Discarding 5 places :
Implicit Place search using SMT only with invariants took 96 ms to find 5 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 52/112 places, 46/101 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 4 transitions
Trivial Post-agglo rules discarded 4 transitions
Performed 4 trivial Post agglomeration. Transition count delta: 4
Iterating post reduction 0 with 4 rules applied. Total rules applied 4 place count 52 transition count 42
Reduce places removed 4 places and 0 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 1 with 5 rules applied. Total rules applied 9 place count 48 transition count 41
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 10 place count 47 transition count 41
Applied a total of 10 rules in 8 ms. Remains 47 /52 variables (removed 5) and now considering 41/46 (removed 5) transitions.
// Phase 1: matrix 41 rows 47 cols
[2024-05-31 20:24:18] [INFO ] Computed 13 invariants in 1 ms
[2024-05-31 20:24:18] [INFO ] Implicit Places using invariants in 69 ms returned []
[2024-05-31 20:24:18] [INFO ] Invariant cache hit.
[2024-05-31 20:24:18] [INFO ] State equation strengthened by 10 read => feed constraints.
[2024-05-31 20:24:18] [INFO ] Implicit Places using invariants and state equation in 112 ms returned []
Implicit Place search using SMT with State Equation took 188 ms to find 0 implicit places.
Starting structural reductions in SI_LTL mode, iteration 2 : 47/112 places, 41/101 transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 341 ms. Remains : 47/112 places, 41/101 transitions.
Stuttering acceptance computed with spot in 99 ms :[(NOT p0), (NOT p0)]
Running random walk in product with property : AutoFlight-PT-05a-LTLCardinality-04
Stuttering criterion allowed to conclude after 13 steps with 0 reset in 0 ms.
FORMULA AutoFlight-PT-05a-LTLCardinality-04 FALSE TECHNIQUES STUTTER_TEST
Treatment of property AutoFlight-PT-05a-LTLCardinality-04 finished in 457 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((F(X((X(F(p0))&&p0))) U p1))))'
Support contains 4 out of 112 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 112/112 places, 101/101 transitions.
Reduce places removed 1 places and 1 transitions.
Reduce places removed 1 places and 0 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 31 transitions
Trivial Post-agglo rules discarded 31 transitions
Performed 31 trivial Post agglomeration. Transition count delta: 31
Iterating post reduction 0 with 32 rules applied. Total rules applied 32 place count 110 transition count 69
Reduce places removed 31 places and 0 transitions.
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Iterating post reduction 1 with 33 rules applied. Total rules applied 65 place count 79 transition count 67
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 2 with 2 rules applied. Total rules applied 67 place count 77 transition count 67
Performed 7 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 7 Pre rules applied. Total rules applied 67 place count 77 transition count 60
Deduced a syphon composed of 7 places in 0 ms
Reduce places removed 12 places and 0 transitions.
Iterating global reduction 3 with 19 rules applied. Total rules applied 86 place count 65 transition count 60
Drop transitions (Trivial Post-Agglo cleanup.) removed 4 transitions
Trivial Post-agglo rules discarded 4 transitions
Performed 4 trivial Post agglomeration. Transition count delta: 4
Iterating post reduction 3 with 4 rules applied. Total rules applied 90 place count 65 transition count 56
Reduce places removed 4 places and 0 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 4 with 5 rules applied. Total rules applied 95 place count 61 transition count 55
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 5 with 1 rules applied. Total rules applied 96 place count 60 transition count 55
Discarding 1 places :
Symmetric choice reduction at 6 with 1 rule applications. Total rules 97 place count 59 transition count 54
Iterating global reduction 6 with 1 rules applied. Total rules applied 98 place count 59 transition count 54
Performed 12 Post agglomeration using F-continuation condition.Transition count delta: 12
Deduced a syphon composed of 12 places in 0 ms
Reduce places removed 12 places and 0 transitions.
Iterating global reduction 6 with 24 rules applied. Total rules applied 122 place count 47 transition count 42
Applied a total of 122 rules in 23 ms. Remains 47 /112 variables (removed 65) and now considering 42/101 (removed 59) transitions.
// Phase 1: matrix 42 rows 47 cols
[2024-05-31 20:24:18] [INFO ] Computed 12 invariants in 1 ms
[2024-05-31 20:24:18] [INFO ] Implicit Places using invariants in 75 ms returned [40]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 76 ms to find 1 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 46/112 places, 42/101 transitions.
Applied a total of 0 rules in 4 ms. Remains 46 /46 variables (removed 0) and now considering 42/42 (removed 0) transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 103 ms. Remains : 46/112 places, 42/101 transitions.
Stuttering acceptance computed with spot in 249 ms :[(NOT p1), (NOT p1), (AND (NOT p1) (NOT p0)), (AND (NOT p1) (NOT p0))]
Running random walk in product with property : AutoFlight-PT-05a-LTLCardinality-07
Stuttering criterion allowed to conclude after 11 steps with 0 reset in 0 ms.
FORMULA AutoFlight-PT-05a-LTLCardinality-07 FALSE TECHNIQUES STUTTER_TEST
Treatment of property AutoFlight-PT-05a-LTLCardinality-07 finished in 386 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(((F(p0) U p1)||X(p2)))))'
Support contains 6 out of 112 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 112/112 places, 101/101 transitions.
Discarding 2 places :
Symmetric choice reduction at 0 with 2 rule applications. Total rules 2 place count 110 transition count 99
Iterating global reduction 0 with 2 rules applied. Total rules applied 4 place count 110 transition count 99
Applied a total of 4 rules in 5 ms. Remains 110 /112 variables (removed 2) and now considering 99/101 (removed 2) transitions.
// Phase 1: matrix 99 rows 110 cols
[2024-05-31 20:24:19] [INFO ] Computed 18 invariants in 2 ms
[2024-05-31 20:24:19] [INFO ] Implicit Places using invariants in 106 ms returned [39, 100]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 111 ms to find 2 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 108/112 places, 99/101 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 107 transition count 98
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 107 transition count 98
Applied a total of 2 rules in 5 ms. Remains 107 /108 variables (removed 1) and now considering 98/99 (removed 1) transitions.
// Phase 1: matrix 98 rows 107 cols
[2024-05-31 20:24:19] [INFO ] Computed 16 invariants in 2 ms
[2024-05-31 20:24:19] [INFO ] Implicit Places using invariants in 126 ms returned []
[2024-05-31 20:24:19] [INFO ] Invariant cache hit.
[2024-05-31 20:24:19] [INFO ] Implicit Places using invariants and state equation in 181 ms returned []
Implicit Place search using SMT with State Equation took 309 ms to find 0 implicit places.
Starting structural reductions in LTL mode, iteration 2 : 107/112 places, 98/101 transitions.
Finished structural reductions in LTL mode , in 2 iterations and 430 ms. Remains : 107/112 places, 98/101 transitions.
Stuttering acceptance computed with spot in 276 ms :[(AND (NOT p1) (NOT p2)), (AND (NOT p1) (NOT p0) (NOT p2)), (AND (NOT p1) (NOT p2)), (AND (NOT p1) (NOT p0) (NOT p2)), false]
Running random walk in product with property : AutoFlight-PT-05a-LTLCardinality-09
Product exploration explored 100000 steps with 3224 reset in 531 ms.
Product exploration explored 100000 steps with 3195 reset in 425 ms.
Computed a total of 1 stabilizing places and 1 stable transitions
Computed a total of 1 stabilizing places and 1 stable transitions
Knowledge obtained : [(AND p1 p0 p2), (X p2), (X (NOT (AND (NOT p1) (NOT p2)))), (X (NOT (AND (NOT p1) (NOT p0) (NOT p2)))), (X (NOT (AND (NOT p0) (NOT p2)))), (X p0), (X p1), (X (X p2)), (X (X (NOT (AND (NOT p1) (NOT p0))))), (X (X (NOT (AND (NOT p1) (NOT p2))))), (X (X (NOT (AND (NOT p1) (NOT p0) (NOT p2))))), (X (X (NOT (AND (NOT p0) (NOT p2))))), (X (X (NOT (AND (NOT p1) (NOT p0) p2)))), (X (X p0)), (X (X (NOT (AND (NOT p1) p2)))), (X (X p1))]
False Knowledge obtained : []
Knowledge based reduction with 16 factoid took 221 ms. Reduced automaton from 5 states, 15 edges and 3 AP (stutter sensitive) to 5 states, 13 edges and 3 AP (stutter sensitive).
Stuttering acceptance computed with spot in 288 ms :[(AND (NOT p1) (NOT p2)), (AND (NOT p0) (NOT p1) (NOT p2)), (AND (NOT p1) (NOT p2)), (AND (NOT p0) (NOT p1) (NOT p2)), false]
RANDOM walk for 40000 steps (1228 resets) in 1273 ms. (31 steps per ms) remains 5/9 properties
BEST_FIRST walk for 40004 steps (189 resets) in 222 ms. (179 steps per ms) remains 5/5 properties
BEST_FIRST walk for 40004 steps (179 resets) in 112 ms. (354 steps per ms) remains 5/5 properties
BEST_FIRST walk for 40004 steps (183 resets) in 118 ms. (336 steps per ms) remains 5/5 properties
BEST_FIRST walk for 40004 steps (182 resets) in 127 ms. (312 steps per ms) remains 5/5 properties
BEST_FIRST walk for 40003 steps (181 resets) in 374 ms. (106 steps per ms) remains 5/5 properties
[2024-05-31 20:24:22] [INFO ] Invariant cache hit.
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/6 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 5 unsolved
At refinement iteration 1 (OVERLAPS) 64/70 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 5 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/70 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 5 unsolved
At refinement iteration 3 (OVERLAPS) 37/107 variables, 14/16 constraints. Problems are: Problem set: 0 solved, 5 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/107 variables, 0/16 constraints. Problems are: Problem set: 0 solved, 5 unsolved
At refinement iteration 5 (OVERLAPS) 98/205 variables, 107/123 constraints. Problems are: Problem set: 0 solved, 5 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/205 variables, 0/123 constraints. Problems are: Problem set: 0 solved, 5 unsolved
At refinement iteration 7 (OVERLAPS) 0/205 variables, 0/123 constraints. Problems are: Problem set: 0 solved, 5 unsolved
No progress, stopping.
After SMT solving in domain Real declared 205/205 variables, and 123 constraints, problems are : Problem set: 0 solved, 5 unsolved in 324 ms.
Refiners :[Positive P Invariants (semi-flows): 16/16 constraints, State Equation: 107/107 constraints, PredecessorRefiner: 5/5 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 5 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/6 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 5 unsolved
Problem apf1 is UNSAT
Problem apf2 is UNSAT
Problem apf3 is UNSAT
Problem apf4 is UNSAT
Problem apf6 is UNSAT
After SMT solving in domain Int declared 70/205 variables, and 2 constraints, problems are : Problem set: 5 solved, 0 unsolved in 86 ms.
Refiners :[Positive P Invariants (semi-flows): 2/16 constraints, State Equation: 0/107 constraints, PredecessorRefiner: 0/5 constraints, Known Traps: 0/0 constraints]
After SMT, in 425ms problems are : Problem set: 5 solved, 0 unsolved
Skipping Parikh replay, no witness traces provided.
Found 5 invariant AP formulas.
Knowledge obtained : [(AND p1 p0 p2), (X p2), (X (NOT (AND (NOT p1) (NOT p2)))), (X (NOT (AND (NOT p1) (NOT p0) (NOT p2)))), (X (NOT (AND (NOT p0) (NOT p2)))), (X p0), (X p1), (X (X p2)), (X (X (NOT (AND (NOT p1) (NOT p0))))), (X (X (NOT (AND (NOT p1) (NOT p2))))), (X (X (NOT (AND (NOT p1) (NOT p0) (NOT p2))))), (X (X (NOT (AND (NOT p0) (NOT p2))))), (X (X (NOT (AND (NOT p1) (NOT p0) p2)))), (X (X p0)), (X (X (NOT (AND (NOT p1) p2)))), (X (X p1)), (G (OR p2 p0 p1)), (G (OR p2 p0)), (G (OR (NOT p2) p0 p1)), (G (OR p0 p1)), (G (OR p2 p1))]
False Knowledge obtained : [(F (NOT (OR (NOT p2) p1))), (F (NOT p2)), (F (NOT p1)), (F (NOT p0))]
Property proved to be true thanks to knowledge (Minato strategy)
Knowledge based reduction with 21 factoid took 95 ms. Reduced automaton from 5 states, 13 edges and 3 AP (stutter sensitive) to 1 states, 0 edges and 0 AP (stutter insensitive).
FORMULA AutoFlight-PT-05a-LTLCardinality-09 TRUE TECHNIQUES KNOWLEDGE
Treatment of property AutoFlight-PT-05a-LTLCardinality-09 finished in 3497 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(p0)))'
Support contains 7 out of 112 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 112/112 places, 101/101 transitions.
Reduce places removed 1 places and 1 transitions.
Reduce places removed 1 places and 0 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 32 transitions
Trivial Post-agglo rules discarded 32 transitions
Performed 32 trivial Post agglomeration. Transition count delta: 32
Iterating post reduction 0 with 33 rules applied. Total rules applied 33 place count 110 transition count 68
Reduce places removed 32 places and 0 transitions.
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Iterating post reduction 1 with 34 rules applied. Total rules applied 67 place count 78 transition count 66
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 2 with 2 rules applied. Total rules applied 69 place count 76 transition count 66
Performed 5 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 5 Pre rules applied. Total rules applied 69 place count 76 transition count 61
Deduced a syphon composed of 5 places in 1 ms
Reduce places removed 9 places and 0 transitions.
Iterating global reduction 3 with 14 rules applied. Total rules applied 83 place count 67 transition count 61
Drop transitions (Trivial Post-Agglo cleanup.) removed 3 transitions
Trivial Post-agglo rules discarded 3 transitions
Performed 3 trivial Post agglomeration. Transition count delta: 3
Iterating post reduction 3 with 3 rules applied. Total rules applied 86 place count 67 transition count 58
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 4 with 3 rules applied. Total rules applied 89 place count 64 transition count 58
Discarding 1 places :
Symmetric choice reduction at 5 with 1 rule applications. Total rules 90 place count 63 transition count 57
Iterating global reduction 5 with 1 rules applied. Total rules applied 91 place count 63 transition count 57
Performed 12 Post agglomeration using F-continuation condition.Transition count delta: 12
Deduced a syphon composed of 12 places in 0 ms
Reduce places removed 12 places and 0 transitions.
Iterating global reduction 5 with 24 rules applied. Total rules applied 115 place count 51 transition count 45
Applied a total of 115 rules in 17 ms. Remains 51 /112 variables (removed 61) and now considering 45/101 (removed 56) transitions.
// Phase 1: matrix 45 rows 51 cols
[2024-05-31 20:24:22] [INFO ] Computed 13 invariants in 1 ms
[2024-05-31 20:24:22] [INFO ] Implicit Places using invariants in 57 ms returned [44]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 58 ms to find 1 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 50/112 places, 45/101 transitions.
Applied a total of 0 rules in 10 ms. Remains 50 /50 variables (removed 0) and now considering 45/45 (removed 0) transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 85 ms. Remains : 50/112 places, 45/101 transitions.
Stuttering acceptance computed with spot in 101 ms :[(NOT p0), (NOT p0)]
Running random walk in product with property : AutoFlight-PT-05a-LTLCardinality-12
Stuttering criterion allowed to conclude after 17 steps with 1 reset in 0 ms.
FORMULA AutoFlight-PT-05a-LTLCardinality-12 FALSE TECHNIQUES STUTTER_TEST
Treatment of property AutoFlight-PT-05a-LTLCardinality-12 finished in 203 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)&&(p1||X(X(F(p2)))))))'
Support contains 5 out of 112 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 112/112 places, 101/101 transitions.
Applied a total of 0 rules in 1 ms. Remains 112 /112 variables (removed 0) and now considering 101/101 (removed 0) transitions.
// Phase 1: matrix 101 rows 112 cols
[2024-05-31 20:24:22] [INFO ] Computed 18 invariants in 2 ms
[2024-05-31 20:24:22] [INFO ] Implicit Places using invariants in 99 ms returned [39, 102]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 120 ms to find 2 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 110/112 places, 101/101 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 109 transition count 100
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 109 transition count 100
Applied a total of 2 rules in 3 ms. Remains 109 /110 variables (removed 1) and now considering 100/101 (removed 1) transitions.
// Phase 1: matrix 100 rows 109 cols
[2024-05-31 20:24:22] [INFO ] Computed 16 invariants in 2 ms
[2024-05-31 20:24:23] [INFO ] Implicit Places using invariants in 90 ms returned []
[2024-05-31 20:24:23] [INFO ] Invariant cache hit.
[2024-05-31 20:24:23] [INFO ] Implicit Places using invariants and state equation in 155 ms returned []
Implicit Place search using SMT with State Equation took 248 ms to find 0 implicit places.
Starting structural reductions in LTL mode, iteration 2 : 109/112 places, 100/101 transitions.
Finished structural reductions in LTL mode , in 2 iterations and 372 ms. Remains : 109/112 places, 100/101 transitions.
Stuttering acceptance computed with spot in 296 ms :[(NOT p0), (OR (NOT p0) (AND (NOT p1) (NOT p2))), (OR (NOT p0) (NOT p2)), true, (OR (NOT p0) (AND (NOT p1) (NOT p2))), (OR (NOT p2) (NOT p0))]
Running random walk in product with property : AutoFlight-PT-05a-LTLCardinality-14
Stuttering criterion allowed to conclude after 20 steps with 0 reset in 0 ms.
FORMULA AutoFlight-PT-05a-LTLCardinality-14 FALSE TECHNIQUES STUTTER_TEST
Treatment of property AutoFlight-PT-05a-LTLCardinality-14 finished in 690 ms.
All properties solved by simple procedures.
Total runtime 11977 ms.
ITS solved all properties within timeout

BK_STOP 1717187063624

--------------------
content from stderr:

+ 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:
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202405141337.jar
+ VERSION=202405141337
+ echo 'Running Version 202405141337'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination LTLCardinality -timeout 360 -rebuildPNML

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="AutoFlight-PT-05a"
export BK_EXAMINATION="LTLCardinality"
export BK_TOOL="ltsminxred"
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 ltsminxred"
echo " Input is AutoFlight-PT-05a, 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 r468-smll-171620167000123"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/AutoFlight-PT-05a.tgz
mv AutoFlight-PT-05a 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 ;