Execution Chart

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Trace from the execution

Formatting '/data/fkordon/mcc2025-input.r184-tall-174889264500612.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2025-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 2-5832
Executing tool itstools
Input is RwMutex-PT-r0010w0010, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r184-tall-174889264500612
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 468K
-rw-r--r-- 1 mcc users 6.1K May 29 14:47 CTLCardinality.txt
-rw-r--r-- 1 mcc users 62K May 29 14:47 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.3K May 29 14:47 CTLFireability.txt
-rw-r--r-- 1 mcc users 61K May 29 14:47 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 29 14:32 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.5K May 29 14:32 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.4K May 29 14:47 LTLCardinality.txt
-rw-r--r-- 1 mcc users 24K May 29 14:47 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K May 29 14:47 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K May 29 14:47 LTLFireability.xml
-rw-r--r-- 1 mcc users 9.1K May 29 14:47 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 94K May 29 14:47 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.4K May 29 14:47 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 85K May 29 14:47 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K May 29 14:47 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K May 29 14:47 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 29 14:32 equiv_col
-rw-r--r-- 1 mcc users 11 May 29 14:32 instance
-rw-r--r-- 1 mcc users 6 May 29 14:32 iscolored
-rw-r--r-- 1 mcc users 27K May 29 14:32 model.pnml

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

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

The expected result is a vector of booleans
BOOL_VECTOR

echo here is the order used to build the result vector(from xml file)
FORMULA_NAME RwMutex-PT-r0010w0010-LTLFireability-00
FORMULA_NAME RwMutex-PT-r0010w0010-LTLFireability-01
FORMULA_NAME RwMutex-PT-r0010w0010-LTLFireability-02
FORMULA_NAME RwMutex-PT-r0010w0010-LTLFireability-03
FORMULA_NAME RwMutex-PT-r0010w0010-LTLFireability-04
FORMULA_NAME RwMutex-PT-r0010w0010-LTLFireability-05
FORMULA_NAME RwMutex-PT-r0010w0010-LTLFireability-06
FORMULA_NAME RwMutex-PT-r0010w0010-LTLFireability-07
FORMULA_NAME RwMutex-PT-r0010w0010-LTLFireability-08
FORMULA_NAME RwMutex-PT-r0010w0010-LTLFireability-09
FORMULA_NAME RwMutex-PT-r0010w0010-LTLFireability-10
FORMULA_NAME RwMutex-PT-r0010w0010-LTLFireability-11
FORMULA_NAME RwMutex-PT-r0010w0010-LTLFireability-12
FORMULA_NAME RwMutex-PT-r0010w0010-LTLFireability-13
FORMULA_NAME RwMutex-PT-r0010w0010-LTLFireability-14
FORMULA_NAME RwMutex-PT-r0010w0010-LTLFireability-15

=== Now, execution of the tool begins

BK_START 1749146341209

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=LTLFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=RwMutex-PT-r0010w0010
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
LTLFireability PT
Running Version 202505121319
[2025-06-05 17:59:02] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, LTLFireability, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2025-06-05 17:59:02] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2025-06-05 17:59:02] [INFO ] Load time of PNML (sax parser for PT used): 50 ms
[2025-06-05 17:59:02] [INFO ] Transformed 50 places.
[2025-06-05 17:59:02] [INFO ] Transformed 40 transitions.
[2025-06-05 17:59:02] [INFO ] Found NUPN structural information;
[2025-06-05 17:59:02] [INFO ] Parsed PT model containing 50 places and 40 transitions and 300 arcs in 135 ms.
Parsed 16 properties from file /home/mcc/execution/LTLFireability.xml in 10 ms.
Working with output stream class java.io.PrintStream
Initial state reduction rules removed 5 formulas.
FORMULA RwMutex-PT-r0010w0010-LTLFireability-01 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA RwMutex-PT-r0010w0010-LTLFireability-03 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA RwMutex-PT-r0010w0010-LTLFireability-04 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA RwMutex-PT-r0010w0010-LTLFireability-12 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA RwMutex-PT-r0010w0010-LTLFireability-13 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Support contains 28 out of 50 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 50/50 places, 40/40 transitions.
Applied a total of 0 rules in 7 ms. Remains 50 /50 variables (removed 0) and now considering 40/40 (removed 0) transitions.
// Phase 1: matrix 40 rows 50 cols
[2025-06-05 17:59:02] [INFO ] Computed 30 invariants in 8 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:02] [INFO ] Implicit Places using invariants in 197 ms returned [1, 2, 3, 7, 8, 10, 11, 13, 22, 33, 44, 46, 47, 48, 49]
Discarding 15 places :
Implicit Place search using SMT only with invariants took 240 ms to find 15 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 35/50 places, 40/40 transitions.
Applied a total of 0 rules in 2 ms. Remains 35 /35 variables (removed 0) and now considering 40/40 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 268 ms. Remains : 35/50 places, 40/40 transitions.
Support contains 28 out of 35 places after structural reductions.
[2025-06-05 17:59:03] [INFO ] Flatten gal took : 26 ms
[2025-06-05 17:59:03] [INFO ] Flatten gal took : 11 ms
[2025-06-05 17:59:03] [INFO ] Input system was already deterministic with 40 transitions.
Support contains 27 out of 35 places (down from 28) after GAL structural reductions.
Reduction of identical properties reduced properties to check from 20 to 17
RANDOM walk for 36105 steps (7 resets) in 639 ms. (56 steps per ms) remains 0/17 properties
Computed a total of 0 stabilizing places and 0 stable transitions
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202505121319/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X((G(p0) U X(X(X(G((F(p1) U (p2&&X(p2))))))))))'
Support contains 3 out of 35 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 35/35 places, 40/40 transitions.
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 4 place count 31 transition count 36
Iterating global reduction 0 with 4 rules applied. Total rules applied 8 place count 31 transition count 36
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 0 with 4 rules applied. Total rules applied 12 place count 31 transition count 32
Applied a total of 12 rules in 8 ms. Remains 31 /35 variables (removed 4) and now considering 32/40 (removed 8) transitions.
// Phase 1: matrix 32 rows 31 cols
[2025-06-05 17:59:03] [INFO ] Computed 15 invariants in 1 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:03] [INFO ] Implicit Places using invariants in 35 ms returned [1, 2, 3, 4, 5]
Discarding 5 places :
Implicit Place search using SMT only with invariants took 37 ms to find 5 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 26/35 places, 32/40 transitions.
Discarding 3 places :
Symmetric choice reduction at 0 with 3 rule applications. Total rules 3 place count 23 transition count 29
Iterating global reduction 0 with 3 rules applied. Total rules applied 6 place count 23 transition count 29
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Iterating post reduction 0 with 3 rules applied. Total rules applied 9 place count 23 transition count 26
Applied a total of 9 rules in 2 ms. Remains 23 /26 variables (removed 3) and now considering 26/32 (removed 6) transitions.
// Phase 1: matrix 26 rows 23 cols
[2025-06-05 17:59:03] [INFO ] Computed 10 invariants in 1 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:03] [INFO ] Implicit Places using invariants in 23 ms returned []
[2025-06-05 17:59:03] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:04] [INFO ] Implicit Places using invariants and state equation in 45 ms returned []
Implicit Place search using SMT with State Equation took 70 ms to find 0 implicit places.
Starting structural reductions in LTL mode, iteration 2 : 23/35 places, 26/40 transitions.
Finished structural reductions in LTL mode , in 2 iterations and 117 ms. Remains : 23/35 places, 26/40 transitions.
Stuttering acceptance computed with spot in 1409 ms :[(NOT p2), (NOT p2), (NOT p2), (AND (NOT p0) (NOT p2)), (NOT p2), (NOT p2), (NOT p1), (NOT p2), (NOT p2), (NOT p2), (AND (NOT p0) (NOT p2)), (AND (NOT p0) (NOT p2)), (NOT p2), (NOT p2), (AND (NOT p0) (NOT p2)), (AND (NOT p1) (NOT p0) (NOT p2)), (AND (NOT p1) (NOT p2)), (AND (NOT p1) (NOT p2)), (NOT p2), (NOT p2), (AND (NOT p1) (NOT p2)), (NOT p2), (NOT p2), (AND (NOT p1) (NOT p2)), (NOT p2), (AND (NOT p1) (NOT p0) (NOT p2)), (AND (NOT p0) (NOT p2)), (AND (NOT p1) (NOT p2)), (NOT p2), (AND (NOT p0) (NOT p2)), (AND (NOT p1) (NOT p0) (NOT p2)), (AND (NOT p0) (NOT p2)), (AND (NOT p0) (NOT p2)), (AND (NOT p1) (NOT p0))]
Running random walk in product with property : RwMutex-PT-r0010w0010-LTLFireability-00
Product exploration explored 100000 steps with 6 reset in 287 ms.
Stack based approach found an accepted trace after 12 steps with 0 reset with depth 13 and stack size 13 in 0 ms.
FORMULA RwMutex-PT-r0010w0010-LTLFireability-00 FALSE TECHNIQUES STACK_TEST
Treatment of property RwMutex-PT-r0010w0010-LTLFireability-00 finished in 1917 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202505121319/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G(F(p0)))'
Support contains 1 out of 35 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 35/35 places, 40/40 transitions.
Graph (trivial) has 18 edges and 35 vertex of which 18 / 35 are part of one of the 9 SCC in 2 ms
Free SCC test removed 9 places
Ensure Unique test removed 9 transitions
Reduce isomorphic transitions removed 9 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 10 transitions
Trivial Post-agglo rules discarded 10 transitions
Performed 10 trivial Post agglomeration. Transition count delta: 10
Iterating post reduction 0 with 10 rules applied. Total rules applied 11 place count 26 transition count 21
Reduce places removed 24 places and 0 transitions.
Ensure Unique test removed 17 transitions
Reduce isomorphic transitions removed 17 transitions.
Iterating post reduction 1 with 41 rules applied. Total rules applied 52 place count 2 transition count 4
Drop transitions (Redundant composition of simpler transitions.) removed 1 transitions
Redundant transition composition rules discarded 1 transitions
Iterating global reduction 2 with 1 rules applied. Total rules applied 53 place count 2 transition count 3
Applied a total of 53 rules in 14 ms. Remains 2 /35 variables (removed 33) and now considering 3/40 (removed 37) transitions.
// Phase 1: matrix 3 rows 2 cols
[2025-06-05 17:59:05] [INFO ] Computed 1 invariants in 1 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:05] [INFO ] Implicit Places using invariants in 15 ms returned []
[2025-06-05 17:59:05] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:05] [INFO ] Implicit Places using invariants and state equation in 19 ms returned []
Implicit Place search using SMT with State Equation took 35 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2025-06-05 17:59:05] [INFO ] Redundant transitions in 0 ms returned []
Running 1 sub problems to find dead transitions.
[2025-06-05 17:59:05] [INFO ] Invariant cache hit.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/1 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (OVERLAPS) 1/2 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/2 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/2 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 2/4 variables, 2/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/4 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 0/4 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 4/5 variables, and 5 constraints, problems are : Problem set: 0 solved, 1 unsolved in 40 ms.
Refiners :[Domain max(s): 2/2 constraints, Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 2/2 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/1 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (OVERLAPS) 1/2 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/2 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/2 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 2/4 variables, 2/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/4 variables, 1/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/4 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 0/4 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 4/5 variables, and 6 constraints, problems are : Problem set: 0 solved, 1 unsolved in 40 ms.
Refiners :[Domain max(s): 2/2 constraints, Positive P Invariants (semi-flows): 1/1 constraints, State Equation: 2/2 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 92ms problems are : Problem set: 0 solved, 1 unsolved
Search for dead transitions found 0 dead transitions in 97ms
Starting structural reductions in SI_LTL mode, iteration 1 : 2/35 places, 3/40 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 154 ms. Remains : 2/35 places, 3/40 transitions.
Stuttering acceptance computed with spot in 73 ms :[(NOT p0), (NOT p0)]
Running random walk in product with property : RwMutex-PT-r0010w0010-LTLFireability-02
Stuttering criterion allowed to conclude after 5 steps with 0 reset in 0 ms.
FORMULA RwMutex-PT-r0010w0010-LTLFireability-02 FALSE TECHNIQUES STUTTER_TEST
Treatment of property RwMutex-PT-r0010w0010-LTLFireability-02 finished in 245 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202505121319/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(G((G(p0)||X((G(p0) U (p1||X(!p0))))))))'
Support contains 12 out of 35 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 35/35 places, 40/40 transitions.
Discarding 3 places :
Symmetric choice reduction at 0 with 3 rule applications. Total rules 3 place count 32 transition count 37
Iterating global reduction 0 with 3 rules applied. Total rules applied 6 place count 32 transition count 37
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Iterating post reduction 0 with 3 rules applied. Total rules applied 9 place count 32 transition count 34
Applied a total of 9 rules in 3 ms. Remains 32 /35 variables (removed 3) and now considering 34/40 (removed 6) transitions.
// Phase 1: matrix 34 rows 32 cols
[2025-06-05 17:59:06] [INFO ] Computed 15 invariants in 1 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:06] [INFO ] Implicit Places using invariants in 32 ms returned [2, 3, 4, 5]
Discarding 4 places :
Implicit Place search using SMT only with invariants took 33 ms to find 4 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 28/35 places, 34/40 transitions.
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 4 place count 24 transition count 30
Iterating global reduction 0 with 4 rules applied. Total rules applied 8 place count 24 transition count 30
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 0 with 4 rules applied. Total rules applied 12 place count 24 transition count 26
Applied a total of 12 rules in 6 ms. Remains 24 /28 variables (removed 4) and now considering 26/34 (removed 8) transitions.
// Phase 1: matrix 26 rows 24 cols
[2025-06-05 17:59:06] [INFO ] Computed 11 invariants in 0 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:06] [INFO ] Implicit Places using invariants in 25 ms returned []
[2025-06-05 17:59:06] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:06] [INFO ] Implicit Places using invariants and state equation in 40 ms returned []
Implicit Place search using SMT with State Equation took 67 ms to find 0 implicit places.
Starting structural reductions in LTL mode, iteration 2 : 24/35 places, 26/40 transitions.
Finished structural reductions in LTL mode , in 2 iterations and 110 ms. Remains : 24/35 places, 26/40 transitions.
Stuttering acceptance computed with spot in 283 ms :[false, false, (AND p0 (NOT p1)), false, p0, false, (AND p0 (NOT p1)), true, (NOT p0)]
Running random walk in product with property : RwMutex-PT-r0010w0010-LTLFireability-05
Entered a terminal (fully accepting) state of product in 112 steps with 21 reset in 3 ms.
FORMULA RwMutex-PT-r0010w0010-LTLFireability-05 FALSE TECHNIQUES STUTTER_TEST
Treatment of property RwMutex-PT-r0010w0010-LTLFireability-05 finished in 418 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202505121319/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G((F(p0)&&F(G(p1)))))'
Support contains 2 out of 35 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 35/35 places, 40/40 transitions.
Graph (trivial) has 20 edges and 35 vertex of which 20 / 35 are part of one of the 10 SCC in 0 ms
Free SCC test removed 10 places
Ensure Unique test removed 10 transitions
Reduce isomorphic transitions removed 10 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 8 transitions
Trivial Post-agglo rules discarded 8 transitions
Performed 8 trivial Post agglomeration. Transition count delta: 8
Iterating post reduction 0 with 8 rules applied. Total rules applied 9 place count 25 transition count 22
Reduce places removed 12 places and 0 transitions.
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 1 with 19 rules applied. Total rules applied 28 place count 13 transition count 15
Drop transitions (Redundant composition of simpler transitions.) removed 1 transitions
Redundant transition composition rules discarded 1 transitions
Iterating global reduction 2 with 1 rules applied. Total rules applied 29 place count 13 transition count 14
Applied a total of 29 rules in 6 ms. Remains 13 /35 variables (removed 22) and now considering 14/40 (removed 26) transitions.
[2025-06-05 17:59:06] [INFO ] Flow matrix only has 5 transitions (discarded 9 similar events)
// Phase 1: matrix 5 rows 13 cols
[2025-06-05 17:59:06] [INFO ] Computed 11 invariants in 0 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:06] [INFO ] Implicit Places using invariants in 24 ms returned [0]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 27 ms to find 1 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 12/35 places, 14/40 transitions.
Applied a total of 0 rules in 2 ms. Remains 12 /12 variables (removed 0) and now considering 14/14 (removed 0) transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 36 ms. Remains : 12/35 places, 14/40 transitions.
Stuttering acceptance computed with spot in 93 ms :[(OR (NOT p0) (NOT p1)), (NOT p0), (NOT p1)]
Running random walk in product with property : RwMutex-PT-r0010w0010-LTLFireability-06
Product exploration explored 100000 steps with 0 reset in 147 ms.
Stack based approach found an accepted trace after 10 steps with 0 reset with depth 11 and stack size 5 in 0 ms.
FORMULA RwMutex-PT-r0010w0010-LTLFireability-06 FALSE TECHNIQUES STACK_TEST
Treatment of property RwMutex-PT-r0010w0010-LTLFireability-06 finished in 290 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202505121319/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(G((F((p0&&F(p1))) U (p1 U X(X(p0)))))))'
Support contains 2 out of 35 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 35/35 places, 40/40 transitions.
Discarding 3 places :
Symmetric choice reduction at 0 with 3 rule applications. Total rules 3 place count 32 transition count 37
Iterating global reduction 0 with 3 rules applied. Total rules applied 6 place count 32 transition count 37
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Iterating post reduction 0 with 3 rules applied. Total rules applied 9 place count 32 transition count 34
Applied a total of 9 rules in 4 ms. Remains 32 /35 variables (removed 3) and now considering 34/40 (removed 6) transitions.
// Phase 1: matrix 34 rows 32 cols
[2025-06-05 17:59:06] [INFO ] Computed 15 invariants in 2 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:06] [INFO ] Implicit Places using invariants in 46 ms returned [1, 2, 3, 4, 5]
Discarding 5 places :
Implicit Place search using SMT only with invariants took 48 ms to find 5 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 27/35 places, 34/40 transitions.
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 4 place count 23 transition count 30
Iterating global reduction 0 with 4 rules applied. Total rules applied 8 place count 23 transition count 30
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 0 with 4 rules applied. Total rules applied 12 place count 23 transition count 26
Applied a total of 12 rules in 1 ms. Remains 23 /27 variables (removed 4) and now considering 26/34 (removed 8) transitions.
// Phase 1: matrix 26 rows 23 cols
[2025-06-05 17:59:06] [INFO ] Computed 10 invariants in 0 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:06] [INFO ] Implicit Places using invariants in 18 ms returned []
[2025-06-05 17:59:06] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:06] [INFO ] Implicit Places using invariants and state equation in 25 ms returned []
Implicit Place search using SMT with State Equation took 46 ms to find 0 implicit places.
Starting structural reductions in LTL mode, iteration 2 : 23/35 places, 26/40 transitions.
Finished structural reductions in LTL mode , in 2 iterations and 100 ms. Remains : 23/35 places, 26/40 transitions.
Stuttering acceptance computed with spot in 481 ms :[(NOT p0), (NOT p0), (NOT p0), (NOT p0), (AND (NOT p1) (NOT p0)), (NOT p0), (AND (NOT p1) (NOT p0)), (NOT p0), (NOT p0), (OR (NOT p0) (NOT p1)), (NOT p1)]
Running random walk in product with property : RwMutex-PT-r0010w0010-LTLFireability-07
Product exploration explored 100000 steps with 3 reset in 145 ms.
Stack based approach found an accepted trace after 9 steps with 0 reset with depth 10 and stack size 10 in 0 ms.
FORMULA RwMutex-PT-r0010w0010-LTLFireability-07 FALSE TECHNIQUES STACK_TEST
Treatment of property RwMutex-PT-r0010w0010-LTLFireability-07 finished in 769 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202505121319/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X((!p0 U (G(p1) U X(!p0)))))'
Support contains 2 out of 35 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 35/35 places, 40/40 transitions.
Discarding 3 places :
Symmetric choice reduction at 0 with 3 rule applications. Total rules 3 place count 32 transition count 37
Iterating global reduction 0 with 3 rules applied. Total rules applied 6 place count 32 transition count 37
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Iterating post reduction 0 with 3 rules applied. Total rules applied 9 place count 32 transition count 34
Applied a total of 9 rules in 1 ms. Remains 32 /35 variables (removed 3) and now considering 34/40 (removed 6) transitions.
// Phase 1: matrix 34 rows 32 cols
[2025-06-05 17:59:07] [INFO ] Computed 15 invariants in 2 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:07] [INFO ] Implicit Places using invariants in 35 ms returned [1, 2, 3, 4, 5]
Discarding 5 places :
Implicit Place search using SMT only with invariants took 36 ms to find 5 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 27/35 places, 34/40 transitions.
Discarding 5 places :
Symmetric choice reduction at 0 with 5 rule applications. Total rules 5 place count 22 transition count 29
Iterating global reduction 0 with 5 rules applied. Total rules applied 10 place count 22 transition count 29
Ensure Unique test removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 15 place count 22 transition count 24
Applied a total of 15 rules in 1 ms. Remains 22 /27 variables (removed 5) and now considering 24/34 (removed 10) transitions.
// Phase 1: matrix 24 rows 22 cols
[2025-06-05 17:59:07] [INFO ] Computed 10 invariants in 0 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:07] [INFO ] Implicit Places using invariants in 19 ms returned []
[2025-06-05 17:59:07] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:07] [INFO ] Implicit Places using invariants and state equation in 34 ms returned []
Implicit Place search using SMT with State Equation took 53 ms to find 0 implicit places.
Starting structural reductions in LTL mode, iteration 2 : 22/35 places, 24/40 transitions.
Finished structural reductions in LTL mode , in 2 iterations and 91 ms. Remains : 22/35 places, 24/40 transitions.
Stuttering acceptance computed with spot in 235 ms :[p0, p0, p0, p0, (AND (NOT p1) p0), true, (NOT p1)]
Running random walk in product with property : RwMutex-PT-r0010w0010-LTLFireability-08
Entered a terminal (fully accepting) state of product in 2 steps with 0 reset in 0 ms.
FORMULA RwMutex-PT-r0010w0010-LTLFireability-08 FALSE TECHNIQUES STUTTER_TEST
Treatment of property RwMutex-PT-r0010w0010-LTLFireability-08 finished in 354 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202505121319/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((X(X(G(p0)))||G(p1)))'
Support contains 1 out of 35 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 35/35 places, 40/40 transitions.
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 4 place count 31 transition count 36
Iterating global reduction 0 with 4 rules applied. Total rules applied 8 place count 31 transition count 36
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 0 with 4 rules applied. Total rules applied 12 place count 31 transition count 32
Applied a total of 12 rules in 2 ms. Remains 31 /35 variables (removed 4) and now considering 32/40 (removed 8) transitions.
// Phase 1: matrix 32 rows 31 cols
[2025-06-05 17:59:07] [INFO ] Computed 15 invariants in 0 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:07] [INFO ] Implicit Places using invariants in 33 ms returned [1, 2, 3, 4, 5]
Discarding 5 places :
Implicit Place search using SMT only with invariants took 34 ms to find 5 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 26/35 places, 32/40 transitions.
Discarding 5 places :
Symmetric choice reduction at 0 with 5 rule applications. Total rules 5 place count 21 transition count 27
Iterating global reduction 0 with 5 rules applied. Total rules applied 10 place count 21 transition count 27
Ensure Unique test removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 15 place count 21 transition count 22
Applied a total of 15 rules in 1 ms. Remains 21 /26 variables (removed 5) and now considering 22/32 (removed 10) transitions.
// Phase 1: matrix 22 rows 21 cols
[2025-06-05 17:59:07] [INFO ] Computed 10 invariants in 0 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:07] [INFO ] Implicit Places using invariants in 25 ms returned []
[2025-06-05 17:59:07] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:07] [INFO ] Implicit Places using invariants and state equation in 36 ms returned []
Implicit Place search using SMT with State Equation took 63 ms to find 0 implicit places.
Starting structural reductions in LTL mode, iteration 2 : 21/35 places, 22/40 transitions.
Finished structural reductions in LTL mode , in 2 iterations and 100 ms. Remains : 21/35 places, 22/40 transitions.
Stuttering acceptance computed with spot in 230 ms :[true, (NOT p0), (AND (NOT p0) (NOT p1)), (NOT p1), (AND (NOT p0) (NOT p1)), (NOT p0), (AND (NOT p1) (NOT p0))]
Running random walk in product with property : RwMutex-PT-r0010w0010-LTLFireability-09
Entered a terminal (fully accepting) state of product in 5 steps with 0 reset in 0 ms.
FORMULA RwMutex-PT-r0010w0010-LTLFireability-09 FALSE TECHNIQUES STUTTER_TEST
Treatment of property RwMutex-PT-r0010w0010-LTLFireability-09 finished in 348 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202505121319/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(((p0&&(F(p0) U p1)) U X((!p2||F(p3)))))'
Support contains 15 out of 35 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 35/35 places, 40/40 transitions.
Discarding 3 places :
Symmetric choice reduction at 0 with 3 rule applications. Total rules 3 place count 32 transition count 37
Iterating global reduction 0 with 3 rules applied. Total rules applied 6 place count 32 transition count 37
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Iterating post reduction 0 with 3 rules applied. Total rules applied 9 place count 32 transition count 34
Applied a total of 9 rules in 3 ms. Remains 32 /35 variables (removed 3) and now considering 34/40 (removed 6) transitions.
// Phase 1: matrix 34 rows 32 cols
[2025-06-05 17:59:08] [INFO ] Computed 15 invariants in 2 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:08] [INFO ] Implicit Places using invariants in 35 ms returned [1, 2, 4]
Discarding 3 places :
Implicit Place search using SMT only with invariants took 36 ms to find 3 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 29/35 places, 34/40 transitions.
Discarding 3 places :
Symmetric choice reduction at 0 with 3 rule applications. Total rules 3 place count 26 transition count 31
Iterating global reduction 0 with 3 rules applied. Total rules applied 6 place count 26 transition count 31
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Iterating post reduction 0 with 3 rules applied. Total rules applied 9 place count 26 transition count 28
Applied a total of 9 rules in 1 ms. Remains 26 /29 variables (removed 3) and now considering 28/34 (removed 6) transitions.
// Phase 1: matrix 28 rows 26 cols
[2025-06-05 17:59:08] [INFO ] Computed 12 invariants in 1 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:08] [INFO ] Implicit Places using invariants in 19 ms returned []
[2025-06-05 17:59:08] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:08] [INFO ] Implicit Places using invariants and state equation in 35 ms returned []
Implicit Place search using SMT with State Equation took 55 ms to find 0 implicit places.
Starting structural reductions in LTL mode, iteration 2 : 26/35 places, 28/40 transitions.
Finished structural reductions in LTL mode , in 2 iterations and 95 ms. Remains : 26/35 places, 28/40 transitions.
Stuttering acceptance computed with spot in 295 ms :[(AND p2 (NOT p3)), (AND (NOT p3) p2), (AND (NOT p1) p2 (NOT p3)), (AND p2 (NOT p3)), (NOT p3), (AND (NOT p0) (NOT p3)), (AND (NOT p1) (NOT p3))]
Running random walk in product with property : RwMutex-PT-r0010w0010-LTLFireability-10
Product exploration explored 100000 steps with 50000 reset in 350 ms.
Product exploration explored 100000 steps with 50000 reset in 147 ms.
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Knowledge obtained : [(AND (NOT p0) p1 p2 (NOT p3)), (X (NOT p2)), (X (NOT (AND p0 p2 (NOT p3)))), (X (NOT (AND (NOT p0) (NOT p1) p2 (NOT p3)))), (X (NOT (AND p0 (NOT p1) p2 (NOT p3)))), (X (NOT (AND p2 (NOT p3)))), (X (NOT (AND (NOT p0) p2 (NOT p3)))), (X (NOT (AND (NOT p1) p2 (NOT p3)))), (X (X (NOT (AND p0 p2 (NOT p3))))), (X (X (NOT (AND (NOT p0) (NOT p1) p2 (NOT p3))))), (X (X (NOT (AND (NOT p1) p2 (NOT p3))))), (X (X (NOT (AND p0 (NOT p1) p2 (NOT p3))))), (X (X (NOT p3)))]
False Knowledge obtained : [(X p3), (X (NOT p3)), (X p0), (X (NOT p0)), (X p1), (X (NOT p1)), (X (X p2)), (X (X (NOT p2))), (X (X (AND (NOT p0) (NOT p3)))), (X (X (NOT (AND (NOT p0) (NOT p3))))), (X (X (AND (NOT p0) p2 (NOT p3)))), (X (X (NOT (AND (NOT p0) p2 (NOT p3))))), (X (X (AND (NOT p1) (NOT p3)))), (X (X (NOT (AND (NOT p1) (NOT p3))))), (X (X (AND (NOT p0) (NOT p1) (NOT p3)))), (X (X (NOT (AND (NOT p0) (NOT p1) (NOT p3))))), (X (X (AND p2 (NOT p3)))), (X (X (NOT (AND p2 (NOT p3))))), (X (X p0)), (X (X (NOT p0))), (X (X p1)), (X (X (NOT p1)))]
Property proved to be true thanks to knowledge (Minato strategy)
Knowledge based reduction with 13 factoid took 28 ms. Reduced automaton from 7 states, 13 edges and 4 AP (stutter sensitive) to 1 states, 0 edges and 0 AP (stutter insensitive).
FORMULA RwMutex-PT-r0010w0010-LTLFireability-10 TRUE TECHNIQUES KNOWLEDGE
Treatment of property RwMutex-PT-r0010w0010-LTLFireability-10 finished in 955 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202505121319/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F((G((F((p0||G(!p1)))&&F(!p1)))||(X(X(!p1))&&F((!p1&&F((p0||G(!p1)))))))))'
Support contains 12 out of 35 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 35/35 places, 40/40 transitions.
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 4 place count 31 transition count 36
Iterating global reduction 0 with 4 rules applied. Total rules applied 8 place count 31 transition count 36
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 0 with 4 rules applied. Total rules applied 12 place count 31 transition count 32
Applied a total of 12 rules in 3 ms. Remains 31 /35 variables (removed 4) and now considering 32/40 (removed 8) transitions.
// Phase 1: matrix 32 rows 31 cols
[2025-06-05 17:59:09] [INFO ] Computed 15 invariants in 0 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:09] [INFO ] Implicit Places using invariants in 29 ms returned [1, 3, 5]
Discarding 3 places :
Implicit Place search using SMT only with invariants took 30 ms to find 3 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 28/35 places, 32/40 transitions.
Discarding 3 places :
Symmetric choice reduction at 0 with 3 rule applications. Total rules 3 place count 25 transition count 29
Iterating global reduction 0 with 3 rules applied. Total rules applied 6 place count 25 transition count 29
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Iterating post reduction 0 with 3 rules applied. Total rules applied 9 place count 25 transition count 26
Applied a total of 9 rules in 2 ms. Remains 25 /28 variables (removed 3) and now considering 26/32 (removed 6) transitions.
// Phase 1: matrix 26 rows 25 cols
[2025-06-05 17:59:09] [INFO ] Computed 12 invariants in 0 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:09] [INFO ] Implicit Places using invariants in 21 ms returned []
[2025-06-05 17:59:09] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:09] [INFO ] Implicit Places using invariants and state equation in 31 ms returned []
Implicit Place search using SMT with State Equation took 56 ms to find 0 implicit places.
Starting structural reductions in LTL mode, iteration 2 : 25/35 places, 26/40 transitions.
Finished structural reductions in LTL mode , in 2 iterations and 91 ms. Remains : 25/35 places, 26/40 transitions.
Stuttering acceptance computed with spot in 358 ms :[p1, (AND (NOT p0) p1), p1, p1, (AND (NOT p0) p1), (AND (NOT p0) p1), (AND (NOT p0) p1), p1, (AND (NOT p0) p1)]
Running random walk in product with property : RwMutex-PT-r0010w0010-LTLFireability-11
Product exploration explored 100000 steps with 486 reset in 193 ms.
Product exploration explored 100000 steps with 419 reset in 217 ms.
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Knowledge obtained : [(AND p0 p1), (X (NOT (AND (NOT p0) p1))), (X (AND (NOT p0) (NOT p1))), (X (NOT p0)), (X (NOT p1)), (X (X (NOT (AND (NOT p0) p1))))]
False Knowledge obtained : [(X (X (AND (NOT p0) (NOT p1)))), (X (X (NOT (AND (NOT p0) (NOT p1))))), (X (X p0)), (X (X (NOT p0))), (X (X p1)), (X (X (NOT p1)))]
Knowledge based reduction with 6 factoid took 259 ms. Reduced automaton from 9 states, 22 edges and 2 AP (stutter sensitive) to 7 states, 12 edges and 2 AP (stutter sensitive).
Stuttering acceptance computed with spot in 271 ms :[p1, (AND (NOT p0) p1), p1, p1, (AND (NOT p0) p1), p1, (AND (NOT p0) p1)]
RANDOM walk for 40000 steps (8 resets) in 251 ms. (158 steps per ms) remains 1/4 properties
BEST_FIRST walk for 40004 steps (8 resets) in 208 ms. (191 steps per ms) remains 1/1 properties
[2025-06-05 17:59:10] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Problem apf0 is UNSAT
After SMT solving in domain Real declared 25/51 variables, and 12 constraints, problems are : Problem set: 1 solved, 0 unsolved in 20 ms.
Refiners :[Positive P Invariants (semi-flows): 12/12 constraints, State Equation: 0/25 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 27ms problems are : Problem set: 1 solved, 0 unsolved
Skipping Parikh replay, no witness traces provided.
Found 1 invariant AP formulas.
Knowledge obtained : [(AND p0 p1), (X (NOT (AND (NOT p0) p1))), (X (AND (NOT p0) (NOT p1))), (X (NOT p0)), (X (NOT p1)), (X (X (NOT (AND (NOT p0) p1)))), (G (OR p0 (NOT p1)))]
False Knowledge obtained : [(X (X (AND (NOT p0) (NOT p1)))), (X (X (NOT (AND (NOT p0) (NOT p1))))), (X (X p0)), (X (X (NOT p0))), (X (X p1)), (X (X (NOT p1))), (F (NOT p1)), (F (NOT p0)), (F (NOT (OR p0 p1)))]
Knowledge based reduction with 7 factoid took 320 ms. Reduced automaton from 7 states, 12 edges and 2 AP (stutter sensitive) to 3 states, 3 edges and 1 AP (stutter sensitive).
Stuttering acceptance computed with spot in 109 ms :[p1, p1, p1]
Stuttering acceptance computed with spot in 105 ms :[p1, p1, p1]
[2025-06-05 17:59:11] [INFO ] Invariant cache hit.
Starting Z3 with timeout 15.0 s and query timeout 1500.0 ms
[2025-06-05 17:59:11] [INFO ] [Real]Absence check using 12 positive place invariants in 2 ms returned sat
[2025-06-05 17:59:11] [INFO ] [Real]Absence check using state equation in 6 ms returned sat
[2025-06-05 17:59:11] [INFO ] Computed and/alt/rep : 13/13/13 causal constraints (skipped 0 transitions) in 2 ms.
[2025-06-05 17:59:11] [INFO ] Added : 0 causal constraints over 0 iterations in 10 ms. Result :sat
Could not prove EG p1
Support contains 11 out of 25 places. Attempting structural reductions.
Property had overlarge support with respect to TGBA, discarding it for now.
Starting structural reductions in LTL mode, iteration 0 : 25/25 places, 26/26 transitions.
Applied a total of 0 rules in 1 ms. Remains 25 /25 variables (removed 0) and now considering 26/26 (removed 0) transitions.
[2025-06-05 17:59:11] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:11] [INFO ] Implicit Places using invariants in 30 ms returned []
[2025-06-05 17:59:11] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:11] [INFO ] Implicit Places using invariants and state equation in 33 ms returned []
Implicit Place search using SMT with State Equation took 64 ms to find 0 implicit places.
Running 13 sub problems to find dead transitions.
[2025-06-05 17:59:11] [INFO ] Invariant cache hit.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/13 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 1 (OVERLAPS) 12/25 variables, 12/12 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/25 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 3 (OVERLAPS) 26/51 variables, 25/37 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/51 variables, 0/37 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 5 (OVERLAPS) 0/51 variables, 0/37 constraints. Problems are: Problem set: 0 solved, 13 unsolved
No progress, stopping.
After SMT solving in domain Real declared 51/51 variables, and 37 constraints, problems are : Problem set: 0 solved, 13 unsolved in 198 ms.
Refiners :[Positive P Invariants (semi-flows): 12/12 constraints, State Equation: 25/25 constraints, PredecessorRefiner: 13/13 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 13 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/13 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 1 (OVERLAPS) 12/25 variables, 12/12 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/25 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 3 (OVERLAPS) 26/51 variables, 25/37 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/51 variables, 13/50 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/51 variables, 0/50 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 6 (OVERLAPS) 0/51 variables, 0/50 constraints. Problems are: Problem set: 0 solved, 13 unsolved
No progress, stopping.
After SMT solving in domain Int declared 51/51 variables, and 50 constraints, problems are : Problem set: 0 solved, 13 unsolved in 169 ms.
Refiners :[Positive P Invariants (semi-flows): 12/12 constraints, State Equation: 25/25 constraints, PredecessorRefiner: 13/13 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 372ms problems are : Problem set: 0 solved, 13 unsolved
Search for dead transitions found 0 dead transitions in 372ms
Finished structural reductions in LTL mode , in 1 iterations and 438 ms. Remains : 25/25 places, 26/26 transitions.
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Knowledge obtained : [p1]
False Knowledge obtained : [(X (X p1)), (X (X (NOT p1)))]
Knowledge based reduction with 1 factoid took 101 ms. Reduced automaton from 3 states, 3 edges and 1 AP (stutter sensitive) to 3 states, 3 edges and 1 AP (stutter sensitive).
Stuttering acceptance computed with spot in 78 ms :[p1, p1, p1]
RANDOM walk for 4 steps (0 resets) in 4 ms. (0 steps per ms) remains 0/1 properties
Knowledge obtained : [p1]
False Knowledge obtained : [(X (X p1)), (X (X (NOT p1))), (F (NOT p1))]
Knowledge based reduction with 1 factoid took 133 ms. Reduced automaton from 3 states, 3 edges and 1 AP (stutter sensitive) to 3 states, 3 edges and 1 AP (stutter sensitive).
Stuttering acceptance computed with spot in 114 ms :[p1, p1, p1]
Stuttering acceptance computed with spot in 105 ms :[p1, p1, p1]
[2025-06-05 17:59:12] [INFO ] Invariant cache hit.
Starting Z3 with timeout 15.0 s and query timeout 1500.0 ms
[2025-06-05 17:59:12] [INFO ] [Real]Absence check using 12 positive place invariants in 4 ms returned sat
[2025-06-05 17:59:12] [INFO ] [Real]Absence check using state equation in 11 ms returned sat
[2025-06-05 17:59:12] [INFO ] Computed and/alt/rep : 13/13/13 causal constraints (skipped 0 transitions) in 2 ms.
[2025-06-05 17:59:12] [INFO ] Added : 0 causal constraints over 0 iterations in 18 ms. Result :sat
Could not prove EG p1
Stuttering acceptance computed with spot in 92 ms :[p1, p1, p1]
Product exploration explored 100000 steps with 30249 reset in 120 ms.
Product exploration explored 100000 steps with 30244 reset in 128 ms.
Applying partial POR strategy [true, false, false]
Stuttering acceptance computed with spot in 110 ms :[p1, p1, p1]
Support contains 11 out of 25 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 25/25 places, 26/26 transitions.
Applied a total of 0 rules in 1 ms. Remains 25 /25 variables (removed 0) and now considering 26/26 (removed 0) transitions.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2025-06-05 17:59:13] [INFO ] Redundant transitions in 0 ms returned []
Running 13 sub problems to find dead transitions.
[2025-06-05 17:59:13] [INFO ] Invariant cache hit.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/13 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 1 (OVERLAPS) 12/25 variables, 12/12 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/25 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 3 (OVERLAPS) 26/51 variables, 25/37 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/51 variables, 0/37 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 5 (OVERLAPS) 0/51 variables, 0/37 constraints. Problems are: Problem set: 0 solved, 13 unsolved
No progress, stopping.
After SMT solving in domain Real declared 51/51 variables, and 37 constraints, problems are : Problem set: 0 solved, 13 unsolved in 176 ms.
Refiners :[Positive P Invariants (semi-flows): 12/12 constraints, State Equation: 25/25 constraints, PredecessorRefiner: 13/13 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 13 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/13 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 1 (OVERLAPS) 12/25 variables, 12/12 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/25 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 3 (OVERLAPS) 26/51 variables, 25/37 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/51 variables, 13/50 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/51 variables, 0/50 constraints. Problems are: Problem set: 0 solved, 13 unsolved
At refinement iteration 6 (OVERLAPS) 0/51 variables, 0/50 constraints. Problems are: Problem set: 0 solved, 13 unsolved
No progress, stopping.
After SMT solving in domain Int declared 51/51 variables, and 50 constraints, problems are : Problem set: 0 solved, 13 unsolved in 196 ms.
Refiners :[Positive P Invariants (semi-flows): 12/12 constraints, State Equation: 25/25 constraints, PredecessorRefiner: 13/13 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 376ms problems are : Problem set: 0 solved, 13 unsolved
Search for dead transitions found 0 dead transitions in 376ms
Finished structural reductions in SI_LTL mode , in 1 iterations and 382 ms. Remains : 25/25 places, 26/26 transitions.
Built C files in :
/tmp/ltsmin8212590129653862416
[2025-06-05 17:59:13] [INFO ] Built C files in 7ms conformant to PINS (ltsmin variant)in folder :/tmp/ltsmin8212590129653862416
Running compilation step : cd /tmp/ltsmin8212590129653862416;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202505121319/bin/limit_time.pl' '3' 'gcc' '-c' '-I/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202505121319/bin/include/' '-I.' '-std=c99' '-fPIC' '-O0' 'model.c'
Compilation finished in 197 ms.
Running link step : cd /tmp/ltsmin8212590129653862416;'gcc' '-shared' '-o' 'gal.so' 'model.o'
Link finished in 43 ms.
Running LTSmin : cd /tmp/ltsmin8212590129653862416;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.ltsmin.binaries_1.0.0.202505121319/bin/pins2lts-mc-linux64' './gal.so' '--threads=8' '--when' '--hoa' '/tmp/stateBased380235377305531893.hoa' '--buchi-type=spotba'
LTSmin run took 128 ms.
FORMULA RwMutex-PT-r0010w0010-LTLFireability-11 TRUE TECHNIQUES EXPLICIT LTSMIN SAT_SMT
Treatment of property RwMutex-PT-r0010w0010-LTLFireability-11 finished in 4715 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202505121319/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(((p0&&F(p1))||(X(p2) U ((!p1&&X(p2))||X(G(p2)))))))'
Support contains 12 out of 35 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 35/35 places, 40/40 transitions.
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 4 place count 31 transition count 36
Iterating global reduction 0 with 4 rules applied. Total rules applied 8 place count 31 transition count 36
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 0 with 4 rules applied. Total rules applied 12 place count 31 transition count 32
Applied a total of 12 rules in 1 ms. Remains 31 /35 variables (removed 4) and now considering 32/40 (removed 8) transitions.
// Phase 1: matrix 32 rows 31 cols
[2025-06-05 17:59:13] [INFO ] Computed 15 invariants in 0 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:13] [INFO ] Implicit Places using invariants in 27 ms returned [1, 2, 3, 4]
Discarding 4 places :
Implicit Place search using SMT only with invariants took 28 ms to find 4 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 27/35 places, 32/40 transitions.
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 4 place count 23 transition count 28
Iterating global reduction 0 with 4 rules applied. Total rules applied 8 place count 23 transition count 28
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 0 with 4 rules applied. Total rules applied 12 place count 23 transition count 24
Applied a total of 12 rules in 0 ms. Remains 23 /27 variables (removed 4) and now considering 24/32 (removed 8) transitions.
// Phase 1: matrix 24 rows 23 cols
[2025-06-05 17:59:13] [INFO ] Computed 11 invariants in 0 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:13] [INFO ] Implicit Places using invariants in 18 ms returned []
[2025-06-05 17:59:13] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:13] [INFO ] Implicit Places using invariants and state equation in 36 ms returned []
Implicit Place search using SMT with State Equation took 55 ms to find 0 implicit places.
Starting structural reductions in LTL mode, iteration 2 : 23/35 places, 24/40 transitions.
Finished structural reductions in LTL mode , in 2 iterations and 84 ms. Remains : 23/35 places, 24/40 transitions.
Stuttering acceptance computed with spot in 219 ms :[true, (NOT p2), (AND (NOT p1) (NOT p2)), (NOT p1), (OR (AND (NOT p1) (NOT p2)) (AND (NOT p0) (NOT p2))), (OR (AND (NOT p1) (NOT p2)) (AND (NOT p0) (NOT p2))), (NOT p2)]
Running random walk in product with property : RwMutex-PT-r0010w0010-LTLFireability-14
Product exploration explored 100000 steps with 11098 reset in 132 ms.
Stack based approach found an accepted trace after 26 steps with 2 reset with depth 20 and stack size 20 in 1 ms.
FORMULA RwMutex-PT-r0010w0010-LTLFireability-14 FALSE TECHNIQUES STACK_TEST
Treatment of property RwMutex-PT-r0010w0010-LTLFireability-14 finished in 453 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202505121319/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(G(p0)))'
Support contains 11 out of 35 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 35/35 places, 40/40 transitions.
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 4 place count 31 transition count 36
Iterating global reduction 0 with 4 rules applied. Total rules applied 8 place count 31 transition count 36
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 0 with 4 rules applied. Total rules applied 12 place count 31 transition count 32
Applied a total of 12 rules in 1 ms. Remains 31 /35 variables (removed 4) and now considering 32/40 (removed 8) transitions.
// Phase 1: matrix 32 rows 31 cols
[2025-06-05 17:59:14] [INFO ] Computed 15 invariants in 1 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:14] [INFO ] Implicit Places using invariants in 33 ms returned [1, 2, 3, 4]
Discarding 4 places :
Implicit Place search using SMT only with invariants took 34 ms to find 4 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 27/35 places, 32/40 transitions.
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 4 place count 23 transition count 28
Iterating global reduction 0 with 4 rules applied. Total rules applied 8 place count 23 transition count 28
Ensure Unique test removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 0 with 4 rules applied. Total rules applied 12 place count 23 transition count 24
Applied a total of 12 rules in 1 ms. Remains 23 /27 variables (removed 4) and now considering 24/32 (removed 8) transitions.
// Phase 1: matrix 24 rows 23 cols
[2025-06-05 17:59:14] [INFO ] Computed 11 invariants in 0 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:14] [INFO ] Implicit Places using invariants in 19 ms returned []
[2025-06-05 17:59:14] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-06-05 17:59:14] [INFO ] Implicit Places using invariants and state equation in 27 ms returned []
Implicit Place search using SMT with State Equation took 48 ms to find 0 implicit places.
Starting structural reductions in LTL mode, iteration 2 : 23/35 places, 24/40 transitions.
Finished structural reductions in LTL mode , in 2 iterations and 84 ms. Remains : 23/35 places, 24/40 transitions.
Stuttering acceptance computed with spot in 91 ms :[true, (NOT p0), (NOT p0)]
Running random walk in product with property : RwMutex-PT-r0010w0010-LTLFireability-15
Entered a terminal (fully accepting) state of product in 568 steps with 0 reset in 2 ms.
FORMULA RwMutex-PT-r0010w0010-LTLFireability-15 FALSE TECHNIQUES STUTTER_TEST
Treatment of property RwMutex-PT-r0010w0010-LTLFireability-15 finished in 190 ms.
All properties solved by simple procedures.
Total runtime 12095 ms.

BK_STOP 1749146354547

--------------------
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
+ [[ LTLFireability = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution LTLFireability -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202505121319.jar
+ VERSION=202505121319
+ echo 'Running Version 202505121319'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination LTLFireability -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="RwMutex-PT-r0010w0010"
export BK_EXAMINATION="LTLFireability"
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 2-5832"
echo " Executing tool itstools"
echo " Input is RwMutex-PT-r0010w0010, 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 r184-tall-174889264500612"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/RwMutex-PT-r0010w0010.tgz
mv RwMutex-PT-r0010w0010 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.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 ;