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.r399-tall-171690530700604.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)
..................
=====================================================================
Generated by BenchKit 2-5568
Executing tool greatspnxred
Input is Sudoku-PT-AN05, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r399-tall-171690530700604
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 2.9M
-rw-r--r-- 1 mcc users 46K Apr 12 11:35 CTLCardinality.txt
-rw-r--r-- 1 mcc users 251K Apr 12 11:35 CTLCardinality.xml
-rw-r--r-- 1 mcc users 94K Apr 12 11:31 CTLFireability.txt
-rw-r--r-- 1 mcc users 473K Apr 12 11:31 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 18 16:43 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.6K May 18 16:43 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 38K Apr 23 08:00 LTLCardinality.txt
-rw-r--r-- 1 mcc users 141K Apr 23 08:00 LTLCardinality.xml
-rw-r--r-- 1 mcc users 59K Apr 23 08:00 LTLFireability.txt
-rw-r--r-- 1 mcc users 224K Apr 23 08:00 LTLFireability.xml
-rw-r--r-- 1 mcc users 48K Apr 12 11:41 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 288K Apr 12 11:41 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 193K Apr 12 11:37 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 931K Apr 12 11:37 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 4.0K Apr 23 08:00 UpperBounds.txt
-rw-r--r-- 1 mcc users 9.9K Apr 23 08:00 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 May 18 16:43 equiv_col
-rw-r--r-- 1 mcc users 5 May 18 16:43 instance
-rw-r--r-- 1 mcc users 6 May 18 16:43 iscolored
-rw-r--r-- 1 mcc users 80K May 18 16:43 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 Sudoku-PT-AN05-LTLFireability-00
FORMULA_NAME Sudoku-PT-AN05-LTLFireability-01
FORMULA_NAME Sudoku-PT-AN05-LTLFireability-02
FORMULA_NAME Sudoku-PT-AN05-LTLFireability-03
FORMULA_NAME Sudoku-PT-AN05-LTLFireability-04
FORMULA_NAME Sudoku-PT-AN05-LTLFireability-05
FORMULA_NAME Sudoku-PT-AN05-LTLFireability-06
FORMULA_NAME Sudoku-PT-AN05-LTLFireability-07
FORMULA_NAME Sudoku-PT-AN05-LTLFireability-08
FORMULA_NAME Sudoku-PT-AN05-LTLFireability-09
FORMULA_NAME Sudoku-PT-AN05-LTLFireability-10
FORMULA_NAME Sudoku-PT-AN05-LTLFireability-11
FORMULA_NAME Sudoku-PT-AN05-LTLFireability-12
FORMULA_NAME Sudoku-PT-AN05-LTLFireability-13
FORMULA_NAME Sudoku-PT-AN05-LTLFireability-14
FORMULA_NAME Sudoku-PT-AN05-LTLFireability-15

=== Now, execution of the tool begins

BK_START 1717057922167

Invoking MCC driver with
BK_TOOL=greatspnxred
BK_EXAMINATION=LTLFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=Sudoku-PT-AN05
BK_MEMORY_CONFINEMENT=16384
Applying reductions before tool greatspn
Invoking reducer
Running Version 202405141337
[2024-05-30 08:32:03] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, LTLFireability, -timeout, 360, -rebuildPNML]
[2024-05-30 08:32:03] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2024-05-30 08:32:03] [INFO ] Load time of PNML (sax parser for PT used): 74 ms
[2024-05-30 08:32:03] [INFO ] Transformed 200 places.
[2024-05-30 08:32:03] [INFO ] Transformed 125 transitions.
[2024-05-30 08:32:03] [INFO ] Found NUPN structural information;
[2024-05-30 08:32:03] [INFO ] Parsed PT model containing 200 places and 125 transitions and 500 arcs in 173 ms.
Parsed 16 properties from file /home/mcc/execution/LTLFireability.xml in 24 ms.
Working with output stream class java.io.PrintStream
Initial state reduction rules removed 3 formulas.
FORMULA Sudoku-PT-AN05-LTLFireability-01 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Sudoku-PT-AN05-LTLFireability-03 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Sudoku-PT-AN05-LTLFireability-08 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Support contains 75 out of 200 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 200/200 places, 125/125 transitions.
Reduce places removed 125 places and 0 transitions.
Iterating post reduction 0 with 125 rules applied. Total rules applied 125 place count 75 transition count 125
Applied a total of 125 rules in 20 ms. Remains 75 /200 variables (removed 125) and now considering 125/125 (removed 0) transitions.
// Phase 1: matrix 125 rows 75 cols
[2024-05-30 08:32:03] [INFO ] Computed 14 invariants in 18 ms
[2024-05-30 08:32:03] [INFO ] Implicit Places using invariants in 154 ms returned []
[2024-05-30 08:32:03] [INFO ] Invariant cache hit.
[2024-05-30 08:32:04] [INFO ] Implicit Places using invariants and state equation in 80 ms returned []
Implicit Place search using SMT with State Equation took 265 ms to find 0 implicit places.
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 1ms
Starting structural reductions in LTL mode, iteration 1 : 75/200 places, 125/125 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 304 ms. Remains : 75/200 places, 125/125 transitions.
Support contains 75 out of 75 places after structural reductions.
[2024-05-30 08:32:04] [INFO ] Flatten gal took : 48 ms
[2024-05-30 08:32:04] [INFO ] Flatten gal took : 40 ms
[2024-05-30 08:32:04] [INFO ] Input system was already deterministic with 125 transitions.
Reduction of identical properties reduced properties to check from 20 to 14
RANDOM walk for 161 steps (6 resets) in 19 ms. (8 steps per ms) remains 0/14 properties
FORMULA Sudoku-PT-AN05-LTLFireability-09 FALSE TECHNIQUES REACHABILITY_KNOWLEDGE
Computed a total of 75 stabilizing places and 125 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 75 transition count 125
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
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((X(p2)&&p1))&&p0)))'
Support contains 75 out of 75 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 75/75 places, 125/125 transitions.
Applied a total of 0 rules in 2 ms. Remains 75 /75 variables (removed 0) and now considering 125/125 (removed 0) transitions.
[2024-05-30 08:32:05] [INFO ] Invariant cache hit.
[2024-05-30 08:32:05] [INFO ] Implicit Places using invariants in 35 ms returned []
[2024-05-30 08:32:05] [INFO ] Invariant cache hit.
[2024-05-30 08:32:05] [INFO ] Implicit Places using invariants and state equation in 100 ms returned []
Implicit Place search using SMT with State Equation took 139 ms to find 0 implicit places.
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 0ms
Finished structural reductions in LTL mode , in 1 iterations and 141 ms. Remains : 75/75 places, 125/125 transitions.
Stuttering acceptance computed with spot in 449 ms :[(NOT p2), (OR (NOT p1) (NOT p2)), (OR (NOT p2) (NOT p0) (NOT p1)), (OR (NOT p1) (NOT p2) (NOT p0)), true]
Running random walk in product with property : Sudoku-PT-AN05-LTLFireability-00
Entered a terminal (fully accepting) state of product in 1 steps with 0 reset in 1 ms.
FORMULA Sudoku-PT-AN05-LTLFireability-00 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Sudoku-PT-AN05-LTLFireability-00 finished in 655 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))||G(p1))))'
Support contains 75 out of 75 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 75/75 places, 125/125 transitions.
Applied a total of 0 rules in 7 ms. Remains 75 /75 variables (removed 0) and now considering 125/125 (removed 0) transitions.
[2024-05-30 08:32:05] [INFO ] Invariant cache hit.
[2024-05-30 08:32:05] [INFO ] Implicit Places using invariants in 35 ms returned []
[2024-05-30 08:32:05] [INFO ] Invariant cache hit.
[2024-05-30 08:32:06] [INFO ] Implicit Places using invariants and state equation in 87 ms returned []
Implicit Place search using SMT with State Equation took 125 ms to find 0 implicit places.
[2024-05-30 08:32:06] [INFO ] Redundant transitions in 2 ms returned []
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 0ms
Finished structural reductions in SI_LTL mode , in 1 iterations and 140 ms. Remains : 75/75 places, 125/125 transitions.
Stuttering acceptance computed with spot in 78 ms :[(AND (NOT p1) (NOT p0)), (AND (NOT p1) (NOT p0))]
Running random walk in product with property : Sudoku-PT-AN05-LTLFireability-02
Product exploration explored 100000 steps with 4546 reset in 1048 ms.
Product exploration explored 100000 steps with 4542 reset in 974 ms.
Computed a total of 75 stabilizing places and 125 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 75 transition count 125
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Knowledge obtained : [(AND (NOT p1) p0), (X (NOT (AND p1 (NOT p0)))), (X p0), (X (NOT (AND (NOT p1) (NOT p0)))), (X (NOT p1)), (X (X (NOT (AND p1 (NOT p0))))), (X (X p0)), (X (X (NOT (AND (NOT p1) (NOT p0))))), (X (X (NOT p1))), (F (G p1)), (F (G (NOT p0)))]
False Knowledge obtained : []
Property proved to be true thanks to knowledge (Minato strategy)
Knowledge based reduction with 11 factoid took 17 ms. Reduced automaton from 2 states, 4 edges and 2 AP (stutter insensitive) to 1 states, 0 edges and 0 AP (stutter insensitive).
FORMULA Sudoku-PT-AN05-LTLFireability-02 TRUE TECHNIQUES KNOWLEDGE
Treatment of property Sudoku-PT-AN05-LTLFireability-02 finished in 2434 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(p1)||p0)))'
Support contains 75 out of 75 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 75/75 places, 125/125 transitions.
Applied a total of 0 rules in 5 ms. Remains 75 /75 variables (removed 0) and now considering 125/125 (removed 0) transitions.
[2024-05-30 08:32:08] [INFO ] Invariant cache hit.
[2024-05-30 08:32:08] [INFO ] Implicit Places using invariants in 32 ms returned []
[2024-05-30 08:32:08] [INFO ] Invariant cache hit.
[2024-05-30 08:32:08] [INFO ] Implicit Places using invariants and state equation in 68 ms returned []
Implicit Place search using SMT with State Equation took 103 ms to find 0 implicit places.
[2024-05-30 08:32:08] [INFO ] Redundant transitions in 2 ms returned []
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 0ms
Finished structural reductions in SI_LTL mode , in 1 iterations and 114 ms. Remains : 75/75 places, 125/125 transitions.
Stuttering acceptance computed with spot in 71 ms :[(AND (NOT p0) (NOT p1)), (NOT p1)]
Running random walk in product with property : Sudoku-PT-AN05-LTLFireability-04
Stuttering criterion allowed to conclude after 20 steps with 0 reset in 1 ms.
FORMULA Sudoku-PT-AN05-LTLFireability-04 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Sudoku-PT-AN05-LTLFireability-04 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(X(p1))||p0) U G(!p1)))'
Support contains 75 out of 75 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 75/75 places, 125/125 transitions.
Applied a total of 0 rules in 1 ms. Remains 75 /75 variables (removed 0) and now considering 125/125 (removed 0) transitions.
[2024-05-30 08:32:08] [INFO ] Invariant cache hit.
[2024-05-30 08:32:08] [INFO ] Implicit Places using invariants in 37 ms returned []
[2024-05-30 08:32:08] [INFO ] Invariant cache hit.
[2024-05-30 08:32:08] [INFO ] Implicit Places using invariants and state equation in 60 ms returned []
Implicit Place search using SMT with State Equation took 98 ms to find 0 implicit places.
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 0ms
Finished structural reductions in LTL mode , in 1 iterations and 104 ms. Remains : 75/75 places, 125/125 transitions.
Stuttering acceptance computed with spot in 250 ms :[p1, (NOT p1), false, (NOT p1), true, false, p1]
Running random walk in product with property : Sudoku-PT-AN05-LTLFireability-05
Product exploration explored 100000 steps with 4546 reset in 1231 ms.
Product exploration explored 100000 steps with 4554 reset in 1250 ms.
Computed a total of 75 stabilizing places and 125 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 75 transition count 125
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Knowledge obtained : [(AND p1 p0), (X p1), (X (NOT (AND p1 (NOT p0)))), (X p0), (X (NOT (AND (NOT p1) (NOT p0)))), (X (X p1)), (X (X (NOT (AND p1 (NOT p0))))), (X (X p0)), (X (X (NOT (AND (NOT p1) (NOT p0))))), (F (G (NOT p1))), (F (G (NOT p0)))]
False Knowledge obtained : []
Knowledge based reduction with 11 factoid took 145 ms. Reduced automaton from 7 states, 12 edges and 2 AP (stutter sensitive) to 7 states, 12 edges and 2 AP (stutter sensitive).
Stuttering acceptance computed with spot in 240 ms :[p1, (NOT p1), false, (NOT p1), true, false, p1]
Reduction of identical properties reduced properties to check from 4 to 2
RANDOM walk for 40000 steps (1819 resets) in 1075 ms. (37 steps per ms) remains 1/2 properties
BEST_FIRST walk for 40004 steps (47 resets) in 1710 ms. (23 steps per ms) remains 1/1 properties
[2024-05-30 08:32:12] [INFO ] Invariant cache hit.
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/75 variables, 75/75 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/75 variables, 14/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/75 variables, 0/89 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 125/200 variables, 75/164 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/200 variables, 0/164 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 0/200 variables, 0/164 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 200/200 variables, and 164 constraints, problems are : Problem set: 0 solved, 1 unsolved in 198 ms.
Refiners :[Domain max(s): 75/75 constraints, Generalized P Invariants (flows): 14/14 constraints, State Equation: 75/75 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Problem apf1 is UNSAT
After SMT solving in domain Int declared 75/200 variables, and 75 constraints, problems are : Problem set: 1 solved, 0 unsolved in 42 ms.
Refiners :[Domain max(s): 75/75 constraints, Generalized P Invariants (flows): 0/14 constraints, State Equation: 0/75 constraints, PredecessorRefiner: 0/1 constraints, Known Traps: 0/0 constraints]
After SMT, in 409ms problems are : Problem set: 1 solved, 0 unsolved
Skipping Parikh replay, no witness traces provided.
Found 1 invariant AP formulas.
Knowledge obtained : [(AND p1 p0), (X p1), (X (NOT (AND p1 (NOT p0)))), (X p0), (X (NOT (AND (NOT p1) (NOT p0)))), (X (X p1)), (X (X (NOT (AND p1 (NOT p0))))), (X (X p0)), (X (X (NOT (AND (NOT p1) (NOT p0))))), (F (G (NOT p1))), (F (G (NOT p0))), (G (OR (NOT p1) p0))]
False Knowledge obtained : [(F (NOT (OR p1 p0))), (F (NOT p1)), (F (NOT p0))]
Knowledge based reduction with 12 factoid took 292 ms. Reduced automaton from 7 states, 12 edges and 2 AP (stutter sensitive) to 6 states, 10 edges and 2 AP (stutter sensitive).
Stuttering acceptance computed with spot in 223 ms :[p1, false, (NOT p1), true, false, p1]
Stuttering acceptance computed with spot in 230 ms :[p1, false, (NOT p1), true, false, p1]
[2024-05-30 08:32:13] [INFO ] Invariant cache hit.
[2024-05-30 08:32:14] [INFO ] [Real]Absence check using 0 positive and 14 generalized place invariants in 15 ms returned sat
[2024-05-30 08:32:14] [INFO ] [Real]Absence check using state equation in 159 ms returned sat
[2024-05-30 08:32:14] [INFO ] Solution in real domain found non-integer solution.
[2024-05-30 08:32:14] [INFO ] [Nat]Absence check using 0 positive and 14 generalized place invariants in 13 ms returned sat
[2024-05-30 08:32:15] [INFO ] [Nat]Absence check using state equation in 86 ms returned sat
[2024-05-30 08:32:15] [INFO ] Computed and/alt/rep : 0/0/0 causal constraints (skipped 0 transitions) in 11 ms.
[2024-05-30 08:32:15] [INFO ] Added : 0 causal constraints over 0 iterations in 36 ms. Result :sat
Could not prove EG p1
Support contains 75 out of 75 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 75/75 places, 125/125 transitions.
Applied a total of 0 rules in 1 ms. Remains 75 /75 variables (removed 0) and now considering 125/125 (removed 0) transitions.
[2024-05-30 08:32:15] [INFO ] Invariant cache hit.
[2024-05-30 08:32:15] [INFO ] Implicit Places using invariants in 30 ms returned []
[2024-05-30 08:32:15] [INFO ] Invariant cache hit.
[2024-05-30 08:32:15] [INFO ] Implicit Places using invariants and state equation in 98 ms returned []
Implicit Place search using SMT with State Equation took 132 ms to find 0 implicit places.
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 0ms
Finished structural reductions in LTL mode , in 1 iterations and 133 ms. Remains : 75/75 places, 125/125 transitions.
Computed a total of 75 stabilizing places and 125 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 75 transition count 125
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Knowledge obtained : [(AND p1 p0), (X p1), (X p0), (X (X p1)), (X (X p0)), (F (G (NOT p1))), (F (G (NOT p0)))]
False Knowledge obtained : []
Knowledge based reduction with 7 factoid took 98 ms. Reduced automaton from 6 states, 10 edges and 2 AP (stutter sensitive) to 6 states, 10 edges and 2 AP (stutter sensitive).
Stuttering acceptance computed with spot in 175 ms :[p1, false, (NOT p1), true, false, p1]
Reduction of identical properties reduced properties to check from 2 to 1
RANDOM walk for 87 steps (0 resets) in 5 ms. (14 steps per ms) remains 0/1 properties
Knowledge obtained : [(AND p1 p0), (X p1), (X p0), (X (X p1)), (X (X p0)), (F (G (NOT p1))), (F (G (NOT p0)))]
False Knowledge obtained : [(F (NOT p1)), (F (NOT p0))]
Knowledge based reduction with 7 factoid took 186 ms. Reduced automaton from 6 states, 10 edges and 2 AP (stutter sensitive) to 6 states, 10 edges and 2 AP (stutter sensitive).
Stuttering acceptance computed with spot in 197 ms :[p1, false, (NOT p1), true, false, p1]
Stuttering acceptance computed with spot in 220 ms :[p1, false, (NOT p1), true, false, p1]
[2024-05-30 08:32:16] [INFO ] Invariant cache hit.
[2024-05-30 08:32:16] [INFO ] [Real]Absence check using 0 positive and 14 generalized place invariants in 17 ms returned sat
[2024-05-30 08:32:16] [INFO ] [Real]Absence check using state equation in 156 ms returned sat
[2024-05-30 08:32:16] [INFO ] Solution in real domain found non-integer solution.
[2024-05-30 08:32:17] [INFO ] [Nat]Absence check using 0 positive and 14 generalized place invariants in 12 ms returned sat
[2024-05-30 08:32:17] [INFO ] [Nat]Absence check using state equation in 84 ms returned sat
[2024-05-30 08:32:17] [INFO ] Computed and/alt/rep : 0/0/0 causal constraints (skipped 0 transitions) in 5 ms.
[2024-05-30 08:32:17] [INFO ] Added : 0 causal constraints over 0 iterations in 24 ms. Result :sat
Could not prove EG p1
Stuttering acceptance computed with spot in 233 ms :[p1, false, (NOT p1), true, false, p1]
Product exploration explored 100000 steps with 4548 reset in 1037 ms.
Product exploration explored 100000 steps with 4548 reset in 1064 ms.
Applying partial POR strategy [false, false, true, true, true, true]
Stuttering acceptance computed with spot in 205 ms :[p1, false, (NOT p1), true, false, p1]
Support contains 75 out of 75 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 75/75 places, 125/125 transitions.
Applied a total of 0 rules in 3 ms. Remains 75 /75 variables (removed 0) and now considering 125/125 (removed 0) transitions.
[2024-05-30 08:32:20] [INFO ] Redundant transitions in 4 ms returned []
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 0ms
Finished structural reductions in SI_LTL mode , in 1 iterations and 13 ms. Remains : 75/75 places, 125/125 transitions.
Support contains 75 out of 75 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 75/75 places, 125/125 transitions.
Applied a total of 0 rules in 0 ms. Remains 75 /75 variables (removed 0) and now considering 125/125 (removed 0) transitions.
[2024-05-30 08:32:20] [INFO ] Invariant cache hit.
[2024-05-30 08:32:20] [INFO ] Implicit Places using invariants in 32 ms returned []
[2024-05-30 08:32:20] [INFO ] Invariant cache hit.
[2024-05-30 08:32:20] [INFO ] Implicit Places using invariants and state equation in 75 ms returned []
Implicit Place search using SMT with State Equation took 110 ms to find 0 implicit places.
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 0ms
Finished structural reductions in LTL mode , in 1 iterations and 111 ms. Remains : 75/75 places, 125/125 transitions.
Treatment of property Sudoku-PT-AN05-LTLFireability-05 finished in 11865 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(p1)&&p0)))'
Support contains 75 out of 75 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 75/75 places, 125/125 transitions.
Applied a total of 0 rules in 5 ms. Remains 75 /75 variables (removed 0) and now considering 125/125 (removed 0) transitions.
[2024-05-30 08:32:20] [INFO ] Invariant cache hit.
[2024-05-30 08:32:20] [INFO ] Implicit Places using invariants in 135 ms returned []
[2024-05-30 08:32:20] [INFO ] Invariant cache hit.
[2024-05-30 08:32:20] [INFO ] Implicit Places using invariants and state equation in 59 ms returned []
Implicit Place search using SMT with State Equation took 196 ms to find 0 implicit places.
[2024-05-30 08:32:20] [INFO ] Redundant transitions in 3 ms returned []
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 0ms
Finished structural reductions in SI_LTL mode , in 1 iterations and 211 ms. Remains : 75/75 places, 125/125 transitions.
Stuttering acceptance computed with spot in 78 ms :[(OR (NOT p1) (NOT p0)), (NOT p1)]
Running random walk in product with property : Sudoku-PT-AN05-LTLFireability-06
Stuttering criterion allowed to conclude after 22 steps with 0 reset in 1 ms.
FORMULA Sudoku-PT-AN05-LTLFireability-06 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Sudoku-PT-AN05-LTLFireability-06 finished in 380 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(G(p0))))'
Support contains 75 out of 75 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 75/75 places, 125/125 transitions.
Applied a total of 0 rules in 1 ms. Remains 75 /75 variables (removed 0) and now considering 125/125 (removed 0) transitions.
[2024-05-30 08:32:20] [INFO ] Invariant cache hit.
[2024-05-30 08:32:20] [INFO ] Implicit Places using invariants in 32 ms returned []
[2024-05-30 08:32:20] [INFO ] Invariant cache hit.
[2024-05-30 08:32:20] [INFO ] Implicit Places using invariants and state equation in 52 ms returned []
Implicit Place search using SMT with State Equation took 86 ms to find 0 implicit places.
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 0ms
Finished structural reductions in LTL mode , in 1 iterations and 87 ms. Remains : 75/75 places, 125/125 transitions.
Stuttering acceptance computed with spot in 147 ms :[true, (NOT p0), (NOT p0), (NOT p0)]
Running random walk in product with property : Sudoku-PT-AN05-LTLFireability-07
Entered a terminal (fully accepting) state of product in 20 steps with 0 reset in 0 ms.
FORMULA Sudoku-PT-AN05-LTLFireability-07 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Sudoku-PT-AN05-LTLFireability-07 finished in 248 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((X(p1)&&p0)))))'
Support contains 6 out of 75 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 75/75 places, 125/125 transitions.
Applied a total of 0 rules in 8 ms. Remains 75 /75 variables (removed 0) and now considering 125/125 (removed 0) transitions.
[2024-05-30 08:32:21] [INFO ] Invariant cache hit.
[2024-05-30 08:32:21] [INFO ] Implicit Places using invariants in 91 ms returned []
[2024-05-30 08:32:21] [INFO ] Invariant cache hit.
[2024-05-30 08:32:21] [INFO ] Implicit Places using invariants and state equation in 130 ms returned []
Implicit Place search using SMT with State Equation took 222 ms to find 0 implicit places.
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 0ms
Finished structural reductions in LTL mode , in 1 iterations and 230 ms. Remains : 75/75 places, 125/125 transitions.
Stuttering acceptance computed with spot in 169 ms :[(NOT p1), (OR (NOT p0) (NOT p1)), (OR (NOT p0) (NOT p1)), (OR (NOT p1) (NOT p0))]
Running random walk in product with property : Sudoku-PT-AN05-LTLFireability-10
Stuttering criterion allowed to conclude after 30 steps with 2 reset in 1 ms.
FORMULA Sudoku-PT-AN05-LTLFireability-10 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Sudoku-PT-AN05-LTLFireability-10 finished in 421 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(F(p0)))'
Support contains 3 out of 75 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 75/75 places, 125/125 transitions.
Applied a total of 0 rules in 5 ms. Remains 75 /75 variables (removed 0) and now considering 125/125 (removed 0) transitions.
[2024-05-30 08:32:21] [INFO ] Invariant cache hit.
[2024-05-30 08:32:21] [INFO ] Implicit Places using invariants in 93 ms returned []
[2024-05-30 08:32:21] [INFO ] Invariant cache hit.
[2024-05-30 08:32:21] [INFO ] Implicit Places using invariants and state equation in 125 ms returned []
Implicit Place search using SMT with State Equation took 219 ms to find 0 implicit places.
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 0ms
Finished structural reductions in LTL mode , in 1 iterations and 224 ms. Remains : 75/75 places, 125/125 transitions.
Stuttering acceptance computed with spot in 84 ms :[(NOT p0), (NOT p0)]
Running random walk in product with property : Sudoku-PT-AN05-LTLFireability-11
Product exploration explored 100000 steps with 12080 reset in 1138 ms.
Product exploration explored 100000 steps with 12029 reset in 1087 ms.
Computed a total of 75 stabilizing places and 125 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 75 transition count 125
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Knowledge obtained : [(NOT p0), (F (G p0))]
False Knowledge obtained : [(X (NOT p0)), (X p0), (X (X (NOT p0))), (X (X p0))]
Property proved to be true thanks to knowledge (Minato strategy)
Knowledge based reduction with 2 factoid took 16 ms. Reduced automaton from 2 states, 2 edges and 1 AP (stutter sensitive) to 1 states, 0 edges and 0 AP (stutter insensitive).
FORMULA Sudoku-PT-AN05-LTLFireability-11 TRUE TECHNIQUES KNOWLEDGE
Treatment of property Sudoku-PT-AN05-LTLFireability-11 finished in 2640 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)&&F(p1))))'
Support contains 6 out of 75 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 75/75 places, 125/125 transitions.
Applied a total of 0 rules in 12 ms. Remains 75 /75 variables (removed 0) and now considering 125/125 (removed 0) transitions.
[2024-05-30 08:32:24] [INFO ] Invariant cache hit.
[2024-05-30 08:32:24] [INFO ] Implicit Places using invariants in 92 ms returned []
[2024-05-30 08:32:24] [INFO ] Invariant cache hit.
[2024-05-30 08:32:24] [INFO ] Implicit Places using invariants and state equation in 126 ms returned []
Implicit Place search using SMT with State Equation took 220 ms to find 0 implicit places.
[2024-05-30 08:32:24] [INFO ] Redundant transitions in 1 ms returned []
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 0ms
Finished structural reductions in SI_LTL mode , in 1 iterations and 238 ms. Remains : 75/75 places, 125/125 transitions.
Stuttering acceptance computed with spot in 113 ms :[(OR (NOT p0) (NOT p1)), (NOT p0), (NOT p1)]
Running random walk in product with property : Sudoku-PT-AN05-LTLFireability-12
Stuttering criterion allowed to conclude after 21 steps with 0 reset in 1 ms.
FORMULA Sudoku-PT-AN05-LTLFireability-12 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Sudoku-PT-AN05-LTLFireability-12 finished in 363 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((F(G((p0 U p1)))||G(p2))))'
Support contains 6 out of 75 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 75/75 places, 125/125 transitions.
Applied a total of 0 rules in 10 ms. Remains 75 /75 variables (removed 0) and now considering 125/125 (removed 0) transitions.
[2024-05-30 08:32:24] [INFO ] Invariant cache hit.
[2024-05-30 08:32:24] [INFO ] Implicit Places using invariants in 84 ms returned []
[2024-05-30 08:32:24] [INFO ] Invariant cache hit.
[2024-05-30 08:32:24] [INFO ] Implicit Places using invariants and state equation in 121 ms returned []
Implicit Place search using SMT with State Equation took 207 ms to find 0 implicit places.
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 0ms
Finished structural reductions in LTL mode , in 1 iterations and 219 ms. Remains : 75/75 places, 125/125 transitions.
Stuttering acceptance computed with spot in 166 ms :[(AND (NOT p1) (NOT p2)), (NOT p1), (NOT p1), (AND (NOT p1) (NOT p2))]
Running random walk in product with property : Sudoku-PT-AN05-LTLFireability-13
Stuttering criterion allowed to conclude after 20 steps with 0 reset in 1 ms.
FORMULA Sudoku-PT-AN05-LTLFireability-13 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Sudoku-PT-AN05-LTLFireability-13 finished in 408 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)||X(X(X((G(p1) U p2))))))'
Support contains 9 out of 75 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 75/75 places, 125/125 transitions.
Applied a total of 0 rules in 3 ms. Remains 75 /75 variables (removed 0) and now considering 125/125 (removed 0) transitions.
[2024-05-30 08:32:24] [INFO ] Invariant cache hit.
[2024-05-30 08:32:24] [INFO ] Implicit Places using invariants in 81 ms returned []
[2024-05-30 08:32:24] [INFO ] Invariant cache hit.
[2024-05-30 08:32:25] [INFO ] Implicit Places using invariants and state equation in 119 ms returned []
Implicit Place search using SMT with State Equation took 201 ms to find 0 implicit places.
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 0ms
Finished structural reductions in LTL mode , in 1 iterations and 205 ms. Remains : 75/75 places, 125/125 transitions.
Stuttering acceptance computed with spot in 574 ms :[(AND (NOT p0) (NOT p2)), (NOT p2), (AND (NOT p0) (NOT p2)), (NOT p2), (NOT p2), true, (NOT p1), (AND (NOT p0) (NOT p2)), (AND (NOT p0) (NOT p2)), (NOT p0), (AND (NOT p1) (NOT p0))]
Running random walk in product with property : Sudoku-PT-AN05-LTLFireability-14
Entered a terminal (fully accepting) state of product in 32 steps with 5 reset in 1 ms.
FORMULA Sudoku-PT-AN05-LTLFireability-14 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Sudoku-PT-AN05-LTLFireability-14 finished in 801 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((F(p0)&&X(G(p1)))))'
Support contains 6 out of 75 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 75/75 places, 125/125 transitions.
Applied a total of 0 rules in 3 ms. Remains 75 /75 variables (removed 0) and now considering 125/125 (removed 0) transitions.
[2024-05-30 08:32:25] [INFO ] Invariant cache hit.
[2024-05-30 08:32:25] [INFO ] Implicit Places using invariants in 84 ms returned []
[2024-05-30 08:32:25] [INFO ] Invariant cache hit.
[2024-05-30 08:32:25] [INFO ] Implicit Places using invariants and state equation in 122 ms returned []
Implicit Place search using SMT with State Equation took 208 ms to find 0 implicit places.
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 0ms
Finished structural reductions in LTL mode , in 1 iterations and 212 ms. Remains : 75/75 places, 125/125 transitions.
Stuttering acceptance computed with spot in 179 ms :[(NOT p1), (OR (NOT p1) (NOT p0)), (OR (NOT p1) (NOT p0)), true, (OR (NOT p0) (NOT p1))]
Running random walk in product with property : Sudoku-PT-AN05-LTLFireability-15
Entered a terminal (fully accepting) state of product in 8 steps with 0 reset in 1 ms.
FORMULA Sudoku-PT-AN05-LTLFireability-15 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Sudoku-PT-AN05-LTLFireability-15 finished in 412 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(p1))||p0) U G(!p1)))'
[2024-05-30 08:32:26] [INFO ] Flatten gal took : 13 ms
[2024-05-30 08:32:26] [INFO ] Export to MCC of 1 properties in file /home/mcc/execution/LTLFireability.sr.xml took 8 ms.
[2024-05-30 08:32:26] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 75 places, 125 transitions and 375 arcs took 3 ms.
Total runtime 22936 ms.
There are residual formulas that ITS could not solve within timeout
----------------------------------------------------------------------
GreatSPN-meddly tool, MCC 2023
----------------------------------------------------------------------

Running Sudoku-PT-AN05

IS_COLORED=
IS_NUPN=

LOADING PETRI NET FILE /home/mcc/execution/404/model.pnml (PNML) ...
PNML VERSION 2009, P/T NET.
COLOR CLASSES: 0
CONSTANTS: 0
PLACES: 75
TRANSITIONS: 125
COLOR VARS: 0
MEASURES: 0
LOADING TIME: [User 0.000s, Sys 0.003s]


SAVING FILE /home/mcc/execution/404/model (.net / .def) ...
EXPORT TIME: [User 0.000s, Sys 0.000s]


----------------------------------------------------------------------
GreatSPN/Meddly.
Copyright (C) 1987-2022, University of Torino, Italy.
website: https://github.com/greatspn/SOURCES

Based on MEDDLY version 0.16.0
Copyright (C) 2009, Iowa State University Research Foundation, Inc.
website: http://meddly.sourceforge.net

Process ID: 1142
MODEL NAME: /home/mcc/execution/404/model
75 places, 125 transitions.

Creating all event NSFs..
Creating all event NSFs..
Creating all event NSFs..
Creating all event NSFs..
Split: SplitSubtract
Start RS construction.
Split: SplitSubtract
Start RS construction.
Split: SplitSubtract
Start RS construction.
Split: SplitSubtract
Start RS construction.

BK_TIME_CONFINEMENT_REACHED

--------------------
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 LTLFireability -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="Sudoku-PT-AN05"
export BK_EXAMINATION="LTLFireability"
export BK_TOOL="greatspnxred"
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 greatspnxred"
echo " Input is Sudoku-PT-AN05, examination is LTLFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r399-tall-171690530700604"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/Sudoku-PT-AN05.tgz
mv Sudoku-PT-AN05 execution
cd execution
if [ "LTLFireability" = "ReachabilityDeadlock" ] || [ "LTLFireability" = "UpperBounds" ] || [ "LTLFireability" = "QuasiLiveness" ] || [ "LTLFireability" = "StableMarking" ] || [ "LTLFireability" = "Liveness" ] || [ "LTLFireability" = "OneSafe" ] || [ "LTLFireability" = "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 [ "LTLFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "LTLFireability" != "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 "LTLFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property LTLFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "LTLFireability.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 '' LTLFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "LTLFireability" = "ReachabilityDeadlock" ] || [ "LTLFireability" = "QuasiLiveness" ] || [ "LTLFireability" = "StableMarking" ] || [ "LTLFireability" = "Liveness" ] || [ "LTLFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME LTLFireability"
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 ;