Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2026-input.r136-smll-177955811100247.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2026-input.qcow2 backing_fmt=qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
.........................................................................................................................................................................................................
=====================================================================
Generated by BenchKit 2-5973
Executing tool itstools
Input is FlexibleBarrier-PT-14b, examination is QuasiLiveness
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r136-smll-177955811100247
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 1.2M
-rw-r--r-- 1 mcc users 7.8K Mar 7 06:45 CTLCardinality.txt
-rw-r--r-- 1 mcc users 85K Mar 7 06:45 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.2K Mar 7 06:45 CTLFireability.txt
-rw-r--r-- 1 mcc users 46K Mar 7 06:45 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Mar 3 18:30 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 4.0K Mar 15 10:13 LTLCardinality.txt
-rw-r--r-- 1 mcc users 28K Mar 15 10:13 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.4K Mar 15 10:13 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Mar 15 10:13 LTLFireability.xml
-rw-r--r-- 1 mcc users 8.7K Mar 7 06:45 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 84K Mar 7 06:45 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 11K Mar 7 06:45 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 95K Mar 7 06:45 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Mar 15 10:13 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Mar 15 10:13 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 4 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 726K Mar 3 18:30 model.pnml

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

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

The expected result is a vector of booleans
BOOL_VECTOR

FORMULA_NAME QuasiLiveness

=== Now, execution of the tool begins

BK_START 1779618130784

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=QuasiLiveness
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=FlexibleBarrier-PT-14b
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
QuasiLiveness PT
Running Version 202604301425
[2026-05-24 10:22:12] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, QuasiLiveness, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 1800]
[2026-05-24 10:22:12] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-24 10:22:13] [INFO ] Load time of PNML (sax parser for PT used): 463 ms
[2026-05-24 10:22:13] [INFO ] Transformed 2678 places.
[2026-05-24 10:22:13] [INFO ] Transformed 3085 transitions.
[2026-05-24 10:22:13] [INFO ] Found NUPN structural information;
[2026-05-24 10:22:13] [INFO ] Parsed PT model containing 2678 places and 3085 transitions and 7733 arcs in 734 ms.
Starting structural reductions in LIVENESS mode, iteration 0 : 2678/2678 places, 3085/3085 transitions.
Graph (trivial) has 2634 edges and 2678 vertex of which 86 / 2678 are part of one of the 14 SCC in 37 ms
Free SCC test removed 72 places
Ensure Unique test removed 73 transitions
Reduce isomorphic transitions removed 73 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 667 transitions
Trivial Post-agglo rules discarded 667 transitions
Performed 667 trivial Post agglomeration. Transition count delta: 667
Iterating post reduction 0 with 667 rules applied. Total rules applied 668 place count 2606 transition count 2345
Reduce places removed 667 places and 0 transitions.
Iterating post reduction 1 with 667 rules applied. Total rules applied 1335 place count 1939 transition count 2345
Performed 182 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 182 Pre rules applied. Total rules applied 1335 place count 1939 transition count 2163
Deduced a syphon composed of 182 places in 20 ms
Reduce places removed 182 places and 0 transitions.
Iterating global reduction 2 with 364 rules applied. Total rules applied 1699 place count 1757 transition count 2163
Performed 1135 Post agglomeration using F-continuation condition.Transition count delta: 1135
Deduced a syphon composed of 1135 places in 1 ms
Reduce places removed 1135 places and 0 transitions.
Iterating global reduction 2 with 2270 rules applied. Total rules applied 3969 place count 622 transition count 1028
Applied a total of 3969 rules in 561 ms. Remains 622 /2678 variables (removed 2056) and now considering 1028/3085 (removed 2057) transitions.
[2026-05-24 10:22:14] [INFO ] Flow matrix only has 987 transitions (discarded 41 similar events)
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-18331660548062759754.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-7255112900919184759.kers'
[2026-05-24 10:22:14] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-18331660548062759754.kers, --Pflows, --basisKERS=/tmp/petrispot-output-7255112900919184759.kers]
Normalized transition count is 986 out of 987 initially.
Culled 0 columns in 1 ms.
// Phase 1: matrix 986 rows 622 cols 3395 entries
Finished phase 1 with 606 SingleSign rule and 0 generalized
[2026-05-24 10:22:14] [INFO ] Computed 16 invariants in 13 ms
Computed 16 P flows in 15 ms.
Exported basis to /tmp/petrispot-output-7255112900919184759.kers
Total runtime 18 ms.
[2026-05-24 10:22:17] [INFO ] Implicit Places using invariants in 3371 ms returned []
[2026-05-24 10:22:17] [INFO ] Flow matrix only has 987 transitions (discarded 41 similar events)
[2026-05-24 10:22:17] [INFO ] Invariant cache hit.
[2026-05-24 10:22:18] [INFO ] State equation strengthened by 85 read => feed constraints.
[2026-05-24 10:22:22] [INFO ] Implicit Places using invariants and state equation in 4467 ms returned []
Implicit Place search using SMT with State Equation took 7905 ms to find 0 implicit places.
Running 1027 sub problems to find dead transitions.
[2026-05-24 10:22:22] [INFO ] Flow matrix only has 987 transitions (discarded 41 similar events)
[2026-05-24 10:22:22] [INFO ] Invariant cache hit.
[2026-05-24 10:22:22] [INFO ] State equation strengthened by 85 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/621 variables, 621/621 constraints. Problems are: Problem set: 0 solved, 1027 unsolved
Error getting values : (error "Timeout of Z3 solver reached")
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 621/1609 variables, and 621 constraints, problems are : Problem set: 0 solved, 1027 unsolved in 30078 ms.
Refiners :[Domain max(s): 621/622 constraints, Positive P Invariants (semi-flows): 0/16 constraints, State Equation: 0/622 constraints, ReadFeed: 0/85 constraints, PredecessorRefiner: 1027/1027 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1027 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/621 variables, 621/621 constraints. Problems are: Problem set: 0 solved, 1027 unsolved
Error getting values : (error "Timeout of Z3 solver reached")
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 621/1609 variables, and 621 constraints, problems are : Problem set: 0 solved, 1027 unsolved in 30048 ms.
Refiners :[Domain max(s): 621/622 constraints, Positive P Invariants (semi-flows): 0/16 constraints, State Equation: 0/622 constraints, ReadFeed: 0/85 constraints, PredecessorRefiner: 0/1027 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 62176ms problems are : Problem set: 0 solved, 1027 unsolved
Search for dead transitions found 0 dead transitions in 62226ms
Starting structural reductions in LIVENESS mode, iteration 1 : 622/2678 places, 1028/3085 transitions.
Finished structural reductions in LIVENESS mode , in 1 iterations and 70801 ms. Remains : 622/2678 places, 1028/3085 transitions.
Discarding 591 transitions out of 1028. Remains 437
Initial state reduction rules removed 1 formulas.
[2026-05-24 10:23:25] [INFO ] Flatten gal took : 351 ms
[2026-05-24 10:23:26] [INFO ] Flatten gal took : 394 ms
[2026-05-24 10:23:26] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality5214739378454020603.gal : 89 ms
[2026-05-24 10:23:26] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality4979354957514031657.prop : 18 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality5214739378454020603.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality4979354957514031657.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202604301425/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...328
Loading property file /tmp/ReachabilityCardinality4979354957514031657.prop.
RANDOM walk for 40000 steps (2036 resets) in 9436 ms. (4 steps per ms) remains 377/436 properties
BEST_FIRST walk for 404 steps (0 resets) in 14 ms. (26 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 8 ms. (44 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 7 ms. (50 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 7 ms. (50 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 377/377 properties
BEST_FIRST walk for 404 steps (0 resets) in 7 ms. (50 steps per ms) remains 377/377 properties
[2026-05-24 10:23:27] [INFO ] Flow matrix only has 987 transitions (discarded 41 similar events)
[2026-05-24 10:23:27] [INFO ] Invariant cache hit.
Reachability property qltransition_900 is true.
Reachability property qltransition_899 is true.
Reachability property qltransition_898 is true.
Reachability property qltransition_897 is true.
Reachability property qltransition_896 is true.
Reachability property qltransition_895 is true.
Reachability property qltransition_894 is true.
Reachability property qltransition_893 is true.
Reachability property qltransition_892 is true.
Reachability property qltransition_891 is true.
Reachability property qltransition_890 is true.
Reachability property qltransition_889 is true.
Reachability property qltransition_888 is true.
Reachability property qltransition_887 is true.
[2026-05-24 10:23:27] [INFO ] State equation strengthened by 85 read => feed constraints.
SDD proceeding with computation,422 properties remain. new max is 2
SDD size :1 after 362
SDD proceeding with computation,422 properties remain. new max is 4
SDD size :362 after 6784
SDD proceeding with computation,422 properties remain. new max is 8
SDD size :6784 after 8779
SDD proceeding with computation,422 properties remain. new max is 16
SDD size :8779 after 215879
SDD proceeding with computation,422 properties remain. new max is 32
SDD size :215879 after 1.07078e+08
At refinement iteration 0 (INCLUDED_ONLY) 0/561 variables, 561/561 constraints. Problems are: Problem set: 0 solved, 377 unsolved
Error getting values : (error "Timeout of Z3 solver reached")
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 561/1609 variables, and 561 constraints, problems are : Problem set: 0 solved, 377 unsolved in 5015 ms.
Refiners :[Domain max(s): 561/622 constraints, Positive P Invariants (semi-flows): 0/16 constraints, State Equation: 0/622 constraints, ReadFeed: 0/85 constraints, PredecessorRefiner: 377/377 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 377 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/561 variables, 561/561 constraints. Problems are: Problem set: 0 solved, 377 unsolved
Reachability property qltransition_730 is true.
Reachability property qltransition_729 is true.
Reachability property qltransition_728 is true.
Reachability property qltransition_727 is true.
Reachability property qltransition_726 is true.
Reachability property qltransition_725 is true.
Reachability property qltransition_724 is true.
Reachability property qltransition_723 is true.
Reachability property qltransition_722 is true.
Reachability property qltransition_721 is true.
Reachability property qltransition_720 is true.
Reachability property qltransition_719 is true.
Reachability property qltransition_718 is true.
Reachability property qltransition_717 is true.
Reachability property qltransition_706 is true.
Reachability property qltransition_705 is true.
Reachability property qltransition_704 is true.
Reachability property qltransition_703 is true.
Reachability property qltransition_702 is true.
Error getting values : (error "Error writing to Z3 solver: java.io.IOException: Broken pipe")
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 561/1609 variables, and 561 constraints, problems are : Problem set: 19 solved, 358 unsolved in 5015 ms.
Refiners :[Domain max(s): 561/622 constraints, Positive P Invariants (semi-flows): 0/16 constraints, State Equation: 0/622 constraints, ReadFeed: 0/85 constraints, PredecessorRefiner: 0/377 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 10329ms problems are : Problem set: 19 solved, 358 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 533 out of 622 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 622/622 places, 1028/1028 transitions.
Drop transitions (Empty/Sink Transition effects.) removed 42 transitions
Reduce isomorphic transitions removed 42 transitions.
Iterating post reduction 0 with 42 rules applied. Total rules applied 42 place count 622 transition count 986
Discarding 9 places :
Symmetric choice reduction at 1 with 9 rule applications. Total rules 51 place count 613 transition count 977
Iterating global reduction 1 with 9 rules applied. Total rules applied 60 place count 613 transition count 977
Ensure Unique test removed 9 transitions
Reduce isomorphic transitions removed 9 transitions.
Iterating post reduction 1 with 9 rules applied. Total rules applied 69 place count 613 transition count 968
Reachability property qltransition_701 is true.
Free-agglomeration rule applied 27 times.
Iterating global reduction 2 with 27 rules applied. Total rules applied 96 place count 613 transition count 941
Reduce places removed 27 places and 0 transitions.
Iterating post reduction 2 with 27 rules applied. Total rules applied 123 place count 586 transition count 941
Applied a total of 123 rules in 248 ms. Remains 586 /622 variables (removed 36) and now considering 941/1028 (removed 87) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 249 ms. Remains : 586/622 places, 941/1028 transitions.
Reachability property qltransition_700 is true.
Reachability property qltransition_699 is true.
Reachability property qltransition_698 is true.
Reachability property qltransition_697 is true.
Reachability property qltransition_696 is true.
Reachability property qltransition_695 is true.
Reachability property qltransition_694 is true.
Reachability property qltransition_693 is true.
Reachability property qltransition_682 is true.
RANDOM walk for 2603298 steps (143932 resets) in 120004 ms. (21 steps per ms) remains 122/357 properties
BEST_FIRST walk for 40004 steps (8 resets) in 66 ms. (597 steps per ms) remains 121/122 properties
BEST_FIRST walk for 40004 steps (8 resets) in 54 ms. (727 steps per ms) remains 120/121 properties
BEST_FIRST walk for 40004 steps (8 resets) in 57 ms. (689 steps per ms) remains 119/120 properties
BEST_FIRST walk for 40004 steps (8 resets) in 51 ms. (769 steps per ms) remains 118/119 properties
BEST_FIRST walk for 40004 steps (8 resets) in 49 ms. (800 steps per ms) remains 117/118 properties
BEST_FIRST walk for 40004 steps (8 resets) in 50 ms. (784 steps per ms) remains 116/117 properties
BEST_FIRST walk for 40004 steps (8 resets) in 48 ms. (816 steps per ms) remains 115/116 properties
BEST_FIRST walk for 40004 steps (8 resets) in 48 ms. (816 steps per ms) remains 114/115 properties
BEST_FIRST walk for 40004 steps (8 resets) in 50 ms. (784 steps per ms) remains 112/114 properties
BEST_FIRST walk for 40004 steps (8 resets) in 41 ms. (952 steps per ms) remains 110/112 properties
BEST_FIRST walk for 40004 steps (8 resets) in 53 ms. (740 steps per ms) remains 109/110 properties
BEST_FIRST walk for 40004 steps (8 resets) in 55 ms. (714 steps per ms) remains 108/109 properties
BEST_FIRST walk for 40004 steps (8 resets) in 56 ms. (701 steps per ms) remains 107/108 properties
BEST_FIRST walk for 40004 steps (8 resets) in 59 ms. (666 steps per ms) remains 106/107 properties
BEST_FIRST walk for 40004 steps (8 resets) in 59 ms. (666 steps per ms) remains 105/106 properties
BEST_FIRST walk for 40004 steps (8 resets) in 57 ms. (689 steps per ms) remains 104/105 properties
BEST_FIRST walk for 40004 steps (8 resets) in 48 ms. (816 steps per ms) remains 103/104 properties
BEST_FIRST walk for 40004 steps (8 resets) in 46 ms. (851 steps per ms) remains 102/103 properties
BEST_FIRST walk for 40004 steps (8 resets) in 44 ms. (888 steps per ms) remains 101/102 properties
BEST_FIRST walk for 40004 steps (8 resets) in 52 ms. (754 steps per ms) remains 100/101 properties
BEST_FIRST walk for 40004 steps (8 resets) in 45 ms. (869 steps per ms) remains 99/100 properties
BEST_FIRST walk for 40004 steps (8 resets) in 46 ms. (851 steps per ms) remains 98/99 properties
BEST_FIRST walk for 40004 steps (8 resets) in 41 ms. (952 steps per ms) remains 97/98 properties
BEST_FIRST walk for 40004 steps (8 resets) in 63 ms. (625 steps per ms) remains 96/97 properties
BEST_FIRST walk for 40004 steps (8 resets) in 47 ms. (833 steps per ms) remains 95/96 properties
BEST_FIRST walk for 40004 steps (8 resets) in 44 ms. (888 steps per ms) remains 94/95 properties
BEST_FIRST walk for 40004 steps (8 resets) in 44 ms. (888 steps per ms) remains 93/94 properties
BEST_FIRST walk for 40004 steps (8 resets) in 49 ms. (800 steps per ms) remains 92/93 properties
BEST_FIRST walk for 40004 steps (8 resets) in 48 ms. (816 steps per ms) remains 91/92 properties
BEST_FIRST walk for 40004 steps (8 resets) in 48 ms. (816 steps per ms) remains 90/91 properties
BEST_FIRST walk for 40004 steps (8 resets) in 38 ms. (1025 steps per ms) remains 89/90 properties
BEST_FIRST walk for 40003 steps (8 resets) in 34 ms. (1142 steps per ms) remains 88/89 properties
BEST_FIRST walk for 40004 steps (8 resets) in 39 ms. (1000 steps per ms) remains 87/88 properties
BEST_FIRST walk for 40004 steps (8 resets) in 56 ms. (701 steps per ms) remains 86/87 properties
BEST_FIRST walk for 40004 steps (8 resets) in 57 ms. (689 steps per ms) remains 85/86 properties
BEST_FIRST walk for 40004 steps (8 resets) in 53 ms. (740 steps per ms) remains 84/85 properties
BEST_FIRST walk for 40004 steps (8 resets) in 57 ms. (689 steps per ms) remains 83/84 properties
BEST_FIRST walk for 40004 steps (8 resets) in 52 ms. (754 steps per ms) remains 82/83 properties
BEST_FIRST walk for 40004 steps (8 resets) in 52 ms. (754 steps per ms) remains 81/82 properties
BEST_FIRST walk for 40004 steps (8 resets) in 53 ms. (740 steps per ms) remains 80/81 properties
BEST_FIRST walk for 40004 steps (8 resets) in 48 ms. (816 steps per ms) remains 79/80 properties
BEST_FIRST walk for 40004 steps (8 resets) in 59 ms. (666 steps per ms) remains 78/79 properties
BEST_FIRST walk for 40004 steps (8 resets) in 56 ms. (701 steps per ms) remains 77/78 properties
BEST_FIRST walk for 40004 steps (8 resets) in 57 ms. (689 steps per ms) remains 76/77 properties
BEST_FIRST walk for 40004 steps (8 resets) in 60 ms. (655 steps per ms) remains 75/76 properties
BEST_FIRST walk for 40004 steps (8 resets) in 54 ms. (727 steps per ms) remains 74/75 properties
BEST_FIRST walk for 40004 steps (8 resets) in 52 ms. (754 steps per ms) remains 73/74 properties
BEST_FIRST walk for 40004 steps (8 resets) in 46 ms. (851 steps per ms) remains 72/73 properties
BEST_FIRST walk for 40004 steps (8 resets) in 51 ms. (769 steps per ms) remains 71/72 properties
BEST_FIRST walk for 40004 steps (8 resets) in 47 ms. (833 steps per ms) remains 70/71 properties
BEST_FIRST walk for 40004 steps (8 resets) in 60 ms. (655 steps per ms) remains 69/70 properties
BEST_FIRST walk for 40004 steps (8 resets) in 52 ms. (754 steps per ms) remains 68/69 properties
BEST_FIRST walk for 40004 steps (8 resets) in 52 ms. (754 steps per ms) remains 67/68 properties
BEST_FIRST walk for 40004 steps (8 resets) in 47 ms. (833 steps per ms) remains 66/67 properties
BEST_FIRST walk for 40004 steps (8 resets) in 49 ms. (800 steps per ms) remains 65/66 properties
BEST_FIRST walk for 40004 steps (8 resets) in 55 ms. (714 steps per ms) remains 64/65 properties
BEST_FIRST walk for 40003 steps (8 resets) in 55 ms. (714 steps per ms) remains 63/64 properties
BEST_FIRST walk for 40004 steps (8 resets) in 48 ms. (816 steps per ms) remains 62/63 properties
BEST_FIRST walk for 40004 steps (8 resets) in 47 ms. (833 steps per ms) remains 61/62 properties
BEST_FIRST walk for 40004 steps (8 resets) in 57 ms. (689 steps per ms) remains 60/61 properties
BEST_FIRST walk for 40004 steps (8 resets) in 56 ms. (701 steps per ms) remains 59/60 properties
BEST_FIRST walk for 40004 steps (8 resets) in 55 ms. (714 steps per ms) remains 58/59 properties
BEST_FIRST walk for 40003 steps (8 resets) in 47 ms. (833 steps per ms) remains 56/58 properties
BEST_FIRST walk for 40004 steps (8 resets) in 46 ms. (851 steps per ms) remains 55/56 properties
BEST_FIRST walk for 40004 steps (8 resets) in 51 ms. (769 steps per ms) remains 54/55 properties
BEST_FIRST walk for 40003 steps (8 resets) in 82 ms. (481 steps per ms) remains 53/54 properties
BEST_FIRST walk for 40004 steps (8 resets) in 75 ms. (526 steps per ms) remains 52/53 properties
BEST_FIRST walk for 40004 steps (8 resets) in 64 ms. (615 steps per ms) remains 51/52 properties
BEST_FIRST walk for 40004 steps (8 resets) in 70 ms. (563 steps per ms) remains 50/51 properties
BEST_FIRST walk for 40004 steps (8 resets) in 66 ms. (597 steps per ms) remains 49/50 properties
BEST_FIRST walk for 40004 steps (8 resets) in 63 ms. (625 steps per ms) remains 48/49 properties
BEST_FIRST walk for 40004 steps (8 resets) in 54 ms. (727 steps per ms) remains 47/48 properties
BEST_FIRST walk for 40004 steps (8 resets) in 64 ms. (615 steps per ms) remains 46/47 properties
BEST_FIRST walk for 40004 steps (8 resets) in 58 ms. (678 steps per ms) remains 45/46 properties
BEST_FIRST walk for 40004 steps (8 resets) in 58 ms. (678 steps per ms) remains 44/45 properties
BEST_FIRST walk for 40004 steps (8 resets) in 67 ms. (588 steps per ms) remains 43/44 properties
BEST_FIRST walk for 40004 steps (8 resets) in 64 ms. (615 steps per ms) remains 42/43 properties
BEST_FIRST walk for 40004 steps (8 resets) in 59 ms. (666 steps per ms) remains 41/42 properties
BEST_FIRST walk for 40004 steps (8 resets) in 62 ms. (634 steps per ms) remains 40/41 properties
BEST_FIRST walk for 40004 steps (8 resets) in 71 ms. (555 steps per ms) remains 39/40 properties
BEST_FIRST walk for 40004 steps (8 resets) in 59 ms. (666 steps per ms) remains 38/39 properties
BEST_FIRST walk for 40004 steps (8 resets) in 52 ms. (754 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (8 resets) in 40 ms. (975 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (8 resets) in 45 ms. (869 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (8 resets) in 42 ms. (930 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (8 resets) in 42 ms. (930 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (8 resets) in 44 ms. (888 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (8 resets) in 42 ms. (930 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (8 resets) in 39 ms. (1000 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (8 resets) in 42 ms. (930 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (8 resets) in 36 ms. (1081 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (11 resets) in 45 ms. (869 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (10 resets) in 48 ms. (816 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (11 resets) in 44 ms. (888 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 52 ms. (754 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (10 resets) in 49 ms. (800 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 58 ms. (678 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 53 ms. (740 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 46 ms. (851 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 50 ms. (784 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 43 ms. (909 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 36 ms. (1081 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 37 ms. (1052 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (11 resets) in 49 ms. (800 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (11 resets) in 41 ms. (952 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 43 ms. (909 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 39 ms. (1000 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (11 resets) in 43 ms. (909 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 47 ms. (833 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (11 resets) in 45 ms. (869 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (11 resets) in 48 ms. (816 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 46 ms. (851 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (11 resets) in 38 ms. (1025 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (11 resets) in 45 ms. (869 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (10 resets) in 43 ms. (909 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (11 resets) in 49 ms. (800 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (10 resets) in 53 ms. (740 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 49 ms. (800 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 50 ms. (784 steps per ms) remains 38/38 properties
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-16097853986081516571.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-8121194506295851921.kers'
[2026-05-24 10:24:09] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-16097853986081516571.kers, --Pflows, --basisKERS=/tmp/petrispot-output-8121194506295851921.kers]
Culled 0 columns in 1 ms.
// Phase 1: matrix 941 rows 586 cols 3243 entries
Finished phase 1 with 570 SingleSign rule and 0 generalized
[2026-05-24 10:24:09] [INFO ] Computed 16 invariants in 6 ms
Computed 16 P flows in 7 ms.
Exported basis to /tmp/petrispot-output-8121194506295851921.kers
Total runtime 9 ms.
[2026-05-24 10:24:09] [INFO ] State equation strengthened by 97 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/40 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 38 unsolved
At refinement iteration 1 (OVERLAPS) 546/586 variables, 16/16 constraints. Problems are: Problem set: 0 solved, 38 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/586 variables, 0/16 constraints. Problems are: Problem set: 0 solved, 38 unsolved
At refinement iteration 3 (OVERLAPS) 941/1527 variables, 586/602 constraints. Problems are: Problem set: 0 solved, 38 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/1527 variables, 97/699 constraints. Problems are: Problem set: 0 solved, 38 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/1527 variables, 0/699 constraints. Problems are: Problem set: 0 solved, 38 unsolved
At refinement iteration 6 (OVERLAPS) 0/1527 variables, 0/699 constraints. Problems are: Problem set: 0 solved, 38 unsolved
No progress, stopping.
After SMT solving in domain Real declared 1527/1527 variables, and 699 constraints, problems are : Problem set: 0 solved, 38 unsolved in 9298 ms.
Refiners :[Positive P Invariants (semi-flows): 16/16 constraints, State Equation: 586/586 constraints, ReadFeed: 97/97 constraints, PredecessorRefiner: 38/38 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 38 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/40 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 38 unsolved
At refinement iteration 1 (OVERLAPS) 546/586 variables, 16/16 constraints. Problems are: Problem set: 0 solved, 38 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/586 variables, 0/16 constraints. Problems are: Problem set: 0 solved, 38 unsolved
At refinement iteration 3 (OVERLAPS) 941/1527 variables, 586/602 constraints. Problems are: Problem set: 0 solved, 38 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/1527 variables, 97/699 constraints. Problems are: Problem set: 0 solved, 38 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/1527 variables, 38/737 constraints. Problems are: Problem set: 0 solved, 38 unsolved
Reachability property qltransition_681 is true.
At refinement iteration 6 (INCLUDED_ONLY) 0/1527 variables, 0/737 constraints. Problems are: Problem set: 0 solved, 38 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 1527/1527 variables, and 737 constraints, problems are : Problem set: 0 solved, 38 unsolved in 45013 ms.
Refiners :[Positive P Invariants (semi-flows): 16/16 constraints, State Equation: 586/586 constraints, ReadFeed: 97/97 constraints, PredecessorRefiner: 38/38 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 54395ms problems are : Problem set: 0 solved, 38 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 40 out of 586 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 586/586 places, 941/941 transitions.
Discarding 156 places :
Symmetric choice reduction at 0 with 156 rule applications. Total rules 156 place count 430 transition count 785
Iterating global reduction 0 with 156 rules applied. Total rules applied 312 place count 430 transition count 785
Ensure Unique test removed 156 transitions
Reduce isomorphic transitions removed 156 transitions.
Iterating post reduction 0 with 156 rules applied. Total rules applied 468 place count 430 transition count 629
Free-agglomeration rule applied 173 times with reduction of 2 identical transitions.
Iterating global reduction 1 with 173 rules applied. Total rules applied 641 place count 430 transition count 454
Reduce places removed 173 places and 0 transitions.
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 1 with 175 rules applied. Total rules applied 816 place count 257 transition count 452
Discarding 78 places :
Symmetric choice reduction at 2 with 78 rule applications. Total rules 894 place count 179 transition count 374
Iterating global reduction 2 with 78 rules applied. Total rules applied 972 place count 179 transition count 374
Ensure Unique test removed 78 transitions
Reduce isomorphic transitions removed 78 transitions.
Iterating post reduction 2 with 78 rules applied. Total rules applied 1050 place count 179 transition count 296
Applied a total of 1050 rules in 178 ms. Remains 179 /586 variables (removed 407) and now considering 296/941 (removed 645) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 179 ms. Remains : 179/586 places, 296/941 transitions.
RANDOM walk for 290718 steps (3176 resets) in 4372 ms. (66 steps per ms) remains 0/38 properties
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
Able to resolve query QuasiLiveness after proving 437 properties.
FORMULA QuasiLiveness TRUE TECHNIQUES RANDOM_WALK DECISION_DIAGRAMS COLLATERAL_PROCESSING BESTFIRST_WALK TOPOLOGICAL INITIAL_STATE
Total runtime 172985 ms.

BK_STOP 1779618305978

--------------------
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
+ [[ QuasiLiveness = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution QuasiLiveness -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800
+ 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_1.0.0.202604301425.jar
+ VERSION=202604301425
+ echo 'Running Version 202604301425'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination QuasiLiveness -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800

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="FlexibleBarrier-PT-14b"
export BK_EXAMINATION="QuasiLiveness"
export BK_TOOL="itstools"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="1800"
export BK_MEMORY_CONFINEMENT="16384"
export BK_BIN_PATH="/home/mcc/BenchKit/bin/"

# this is specific to your benchmark or test

export BIN_DIR="$HOME/BenchKit/bin"

# remove the execution directoty if it exists (to avoid increse of .vmdk images)
if [ -d execution ] ; then
rm -rf execution
fi

# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-5973"
echo " Executing tool itstools"
echo " Input is FlexibleBarrier-PT-14b, examination is QuasiLiveness"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r136-smll-177955811100247"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/FlexibleBarrier-PT-14b.tgz
mv FlexibleBarrier-PT-14b execution
cd execution
if [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "UpperBounds" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] || [ "QuasiLiveness" = "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 [ "QuasiLiveness" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "QuasiLiveness" != "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 "QuasiLiveness.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 '' QuasiLiveness.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] ; then
echo "FORMULA_NAME QuasiLiveness"
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 ;