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.r144-smll-177955812600247.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 gold2025
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 r144-smll-177955812600247
=====================================================================

--------------------
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 1779636518050

Invoking MCC driver with
GOLD_TOOL=
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 202505121319
[2026-05-24 15:28:40] [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 15:28:40] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-24 15:28:41] [INFO ] Load time of PNML (sax parser for PT used): 412 ms
[2026-05-24 15:28:41] [INFO ] Transformed 2678 places.
[2026-05-24 15:28:41] [INFO ] Transformed 3085 transitions.
[2026-05-24 15:28:41] [INFO ] Found NUPN structural information;
[2026-05-24 15:28:41] [INFO ] Parsed PT model containing 2678 places and 3085 transitions and 7733 arcs in 648 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 43 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 25 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 658 ms. Remains 622 /2678 variables (removed 2056) and now considering 1028/3085 (removed 2057) transitions.
[2026-05-24 15:28:42] [INFO ] Flow matrix only has 987 transitions (discarded 41 similar events)
// Phase 1: matrix 987 rows 622 cols
[2026-05-24 15:28:42] [INFO ] Computed 16 invariants in 77 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 15:28:44] [INFO ] Implicit Places using invariants in 2359 ms returned []
[2026-05-24 15:28:44] [INFO ] Flow matrix only has 987 transitions (discarded 41 similar events)
[2026-05-24 15:28:44] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 15:28:45] [INFO ] State equation strengthened by 85 read => feed constraints.
[2026-05-24 15:28:48] [INFO ] Implicit Places using invariants and state equation in 4284 ms returned []
Implicit Place search using SMT with State Equation took 6725 ms to find 0 implicit places.
Running 1027 sub problems to find dead transitions.
[2026-05-24 15:28:48] [INFO ] Flow matrix only has 987 transitions (discarded 41 similar events)
[2026-05-24 15:28:48] [INFO ] Invariant cache hit.
[2026-05-24 15:28:48] [INFO ] State equation strengthened by 85 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/621 variables, 621/621 constraints. Problems are: Problem set: 0 solved, 1027 unsolved
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 30098 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
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/621 variables, 621/621 constraints. Problems are: Problem set: 0 solved, 1027 unsolved
Error getting values : (error "ParserException while parsing response: (timeout
org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
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 62424ms problems are : Problem set: 0 solved, 1027 unsolved
Search for dead transitions found 0 dead transitions in 62487ms
Starting structural reductions in LIVENESS mode, iteration 1 : 622/2678 places, 1028/3085 transitions.
Finished structural reductions in LIVENESS mode , in 1 iterations and 69961 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 15:29:52] [INFO ] Flatten gal took : 439 ms
[2026-05-24 15:29:53] [INFO ] Flatten gal took : 210 ms
[2026-05-24 15:29:53] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality13785757271153499777.gal : 93 ms
[2026-05-24 15:29:53] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality2529107041265778390.prop : 30 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality13785757271153499777.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality2529107041265778390.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
RANDOM walk for 40000 steps (2044 resets) in 7742 ms. (5 steps per ms) remains 375/436 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 7 ms. (50 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 7 ms. (50 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 8 ms. (44 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 8 ms. (44 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 7 ms. (50 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 7 ms. (50 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 29 ms. (13 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 7 ms. (50 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 7 ms. (50 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 7 ms. (50 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 4 ms. (80 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 5 ms. (67 steps per ms) remains 375/375 properties
BEST_FIRST walk for 404 steps (0 resets) in 6 ms. (57 steps per ms) remains 375/375 properties
[2026-05-24 15:29:53] [INFO ] Flow matrix only has 987 transitions (discarded 41 similar events)
[2026-05-24 15:29:53] [INFO ] Invariant cache hit.
[2026-05-24 15:29:53] [INFO ] State equation strengthened by 85 read => feed constraints.
Loading property file /tmp/ReachabilityCardinality2529107041265778390.prop.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
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.
SDD proceeding with computation,422 properties remain. new max is 2
SDD size :1 after 343
SDD proceeding with computation,422 properties remain. new max is 4
SDD size :343 after 400
SDD proceeding with computation,422 properties remain. new max is 8
SDD size :400 after 8361
SDD proceeding with computation,422 properties remain. new max is 16
SDD size :8361 after 207937
SDD proceeding with computation,422 properties remain. new max is 32
SDD size :207937 after 6.78163e+06
At refinement iteration 0 (INCLUDED_ONLY) 0/559 variables, 559/559 constraints. Problems are: Problem set: 0 solved, 375 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 559/1609 variables, and 559 constraints, problems are : Problem set: 0 solved, 375 unsolved in 5036 ms.
Refiners :[Domain max(s): 559/622 constraints, Positive P Invariants (semi-flows): 0/16 constraints, State Equation: 0/622 constraints, ReadFeed: 0/85 constraints, PredecessorRefiner: 375/375 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 375 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/559 variables, 559/559 constraints. Problems are: Problem set: 0 solved, 375 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.
Error getting values : (error "ParserException while parsing response: (timeout
org.smtlib.IParser$ParserException: Unbalanced parentheses at end of input")
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 559/1609 variables, and 559 constraints, problems are : Problem set: 17 solved, 358 unsolved in 5017 ms.
Refiners :[Domain max(s): 559/622 constraints, Positive P Invariants (semi-flows): 0/16 constraints, State Equation: 0/622 constraints, ReadFeed: 0/85 constraints, PredecessorRefiner: 0/375 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 10610ms problems are : Problem set: 17 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_702 is true.
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 388 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 389 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.
RANDOM walk for 2576160 steps (142436 resets) in 120004 ms. (21 steps per ms) remains 123/356 properties
BEST_FIRST walk for 40004 steps (8 resets) in 73 ms. (540 steps per ms) remains 122/123 properties
BEST_FIRST walk for 40003 steps (8 resets) in 70 ms. (563 steps per ms) remains 121/122 properties
BEST_FIRST walk for 40004 steps (8 resets) in 58 ms. (678 steps per ms) remains 120/121 properties
BEST_FIRST walk for 40004 steps (8 resets) in 52 ms. (754 steps per ms) remains 118/120 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 54 ms. (727 steps per ms) remains 116/117 properties
BEST_FIRST walk for 40004 steps (8 resets) in 50 ms. (784 steps per ms) remains 115/116 properties
BEST_FIRST walk for 40004 steps (8 resets) in 55 ms. (714 steps per ms) remains 114/115 properties
BEST_FIRST walk for 40004 steps (8 resets) in 59 ms. (666 steps per ms) remains 113/114 properties
BEST_FIRST walk for 40003 steps (8 resets) in 58 ms. (678 steps per ms) remains 112/113 properties
BEST_FIRST walk for 40004 steps (8 resets) in 50 ms. (784 steps per ms) remains 111/112 properties
BEST_FIRST walk for 40004 steps (8 resets) in 59 ms. (666 steps per ms) remains 110/111 properties
BEST_FIRST walk for 40004 steps (8 resets) in 60 ms. (655 steps per ms) remains 109/110 properties
BEST_FIRST walk for 40004 steps (8 resets) in 62 ms. (634 steps per ms) remains 108/109 properties
BEST_FIRST walk for 40004 steps (8 resets) in 52 ms. (754 steps per ms) remains 107/108 properties
BEST_FIRST walk for 40004 steps (8 resets) in 50 ms. (784 steps per ms) remains 106/107 properties
BEST_FIRST walk for 40004 steps (8 resets) in 53 ms. (740 steps per ms) remains 105/106 properties
BEST_FIRST walk for 40004 steps (8 resets) in 50 ms. (784 steps per ms) remains 104/105 properties
BEST_FIRST walk for 40004 steps (8 resets) in 51 ms. (769 steps per ms) remains 103/104 properties
BEST_FIRST walk for 40003 steps (8 resets) in 73 ms. (540 steps per ms) remains 102/103 properties
BEST_FIRST walk for 40003 steps (8 resets) in 48 ms. (816 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 56 ms. (701 steps per ms) remains 99/100 properties
BEST_FIRST walk for 40004 steps (8 resets) in 67 ms. (588 steps per ms) remains 98/99 properties
BEST_FIRST walk for 40004 steps (8 resets) in 68 ms. (579 steps per ms) remains 97/98 properties
BEST_FIRST walk for 40004 steps (8 resets) in 72 ms. (548 steps per ms) remains 96/97 properties
BEST_FIRST walk for 40004 steps (8 resets) in 69 ms. (571 steps per ms) remains 95/96 properties
BEST_FIRST walk for 40004 steps (8 resets) in 67 ms. (588 steps per ms) remains 94/95 properties
BEST_FIRST walk for 40004 steps (8 resets) in 45 ms. (869 steps per ms) remains 93/94 properties
BEST_FIRST walk for 40004 steps (8 resets) in 40 ms. (975 steps per ms) remains 92/93 properties
BEST_FIRST walk for 40004 steps (8 resets) in 38 ms. (1025 steps per ms) remains 91/92 properties
BEST_FIRST walk for 40004 steps (8 resets) in 36 ms. (1081 steps per ms) remains 90/91 properties
BEST_FIRST walk for 40004 steps (8 resets) in 40 ms. (975 steps per ms) remains 89/90 properties
BEST_FIRST walk for 40004 steps (8 resets) in 40 ms. (975 steps per ms) remains 88/89 properties
BEST_FIRST walk for 40004 steps (8 resets) in 40 ms. (975 steps per ms) remains 87/88 properties
BEST_FIRST walk for 40004 steps (8 resets) in 37 ms. (1052 steps per ms) remains 86/87 properties
BEST_FIRST walk for 40004 steps (8 resets) in 42 ms. (930 steps per ms) remains 85/86 properties
BEST_FIRST walk for 40004 steps (8 resets) in 35 ms. (1111 steps per ms) remains 84/85 properties
BEST_FIRST walk for 40004 steps (8 resets) in 43 ms. (909 steps per ms) remains 83/84 properties
BEST_FIRST walk for 40003 steps (8 resets) in 57 ms. (689 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 54 ms. (727 steps per ms) remains 80/81 properties
BEST_FIRST walk for 40004 steps (8 resets) in 57 ms. (689 steps per ms) remains 79/80 properties
BEST_FIRST walk for 40004 steps (8 resets) in 50 ms. (784 steps per ms) remains 78/79 properties
BEST_FIRST walk for 40004 steps (8 resets) in 53 ms. (740 steps per ms) remains 77/78 properties
BEST_FIRST walk for 40004 steps (8 resets) in 52 ms. (754 steps per ms) remains 76/77 properties
BEST_FIRST walk for 40004 steps (8 resets) in 55 ms. (714 steps per ms) remains 75/76 properties
BEST_FIRST walk for 40004 steps (8 resets) in 49 ms. (800 steps per ms) remains 74/75 properties
BEST_FIRST walk for 40004 steps (8 resets) in 62 ms. (634 steps per ms) remains 73/74 properties
BEST_FIRST walk for 40004 steps (8 resets) in 55 ms. (714 steps per ms) remains 72/73 properties
BEST_FIRST walk for 40004 steps (8 resets) in 60 ms. (655 steps per ms) remains 71/72 properties
BEST_FIRST walk for 40004 steps (8 resets) in 57 ms. (689 steps per ms) remains 70/71 properties
BEST_FIRST walk for 40004 steps (8 resets) in 49 ms. (800 steps per ms) remains 69/70 properties
BEST_FIRST walk for 40004 steps (8 resets) in 53 ms. (740 steps per ms) remains 68/69 properties
BEST_FIRST walk for 40004 steps (8 resets) in 43 ms. (909 steps per ms) remains 67/68 properties
BEST_FIRST walk for 40004 steps (8 resets) in 55 ms. (714 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 52 ms. (754 steps per ms) remains 64/65 properties
BEST_FIRST walk for 40004 steps (8 resets) in 48 ms. (816 steps per ms) remains 63/64 properties
BEST_FIRST walk for 40003 steps (8 resets) in 51 ms. (769 steps per ms) remains 62/63 properties
BEST_FIRST walk for 40004 steps (8 resets) in 52 ms. (754 steps per ms) remains 61/62 properties
BEST_FIRST walk for 40004 steps (8 resets) in 47 ms. (833 steps per ms) remains 60/61 properties
BEST_FIRST walk for 40004 steps (8 resets) in 49 ms. (800 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 40004 steps (8 resets) in 50 ms. (784 steps per ms) remains 57/58 properties
BEST_FIRST walk for 40004 steps (8 resets) in 56 ms. (701 steps per ms) remains 56/57 properties
BEST_FIRST walk for 40004 steps (8 resets) in 41 ms. (952 steps per ms) remains 55/56 properties
BEST_FIRST walk for 40004 steps (8 resets) in 40 ms. (975 steps per ms) remains 53/55 properties
BEST_FIRST walk for 40003 steps (8 resets) in 41 ms. (952 steps per ms) remains 52/53 properties
BEST_FIRST walk for 40004 steps (8 resets) in 44 ms. (888 steps per ms) remains 51/52 properties
BEST_FIRST walk for 40004 steps (8 resets) in 42 ms. (930 steps per ms) remains 50/51 properties
BEST_FIRST walk for 40004 steps (8 resets) in 40 ms. (975 steps per ms) remains 49/50 properties
BEST_FIRST walk for 40004 steps (8 resets) in 35 ms. (1111 steps per ms) remains 48/49 properties
BEST_FIRST walk for 40004 steps (8 resets) in 35 ms. (1111 steps per ms) remains 47/48 properties
BEST_FIRST walk for 40004 steps (8 resets) in 41 ms. (952 steps per ms) remains 46/47 properties
BEST_FIRST walk for 40004 steps (8 resets) in 53 ms. (740 steps per ms) remains 45/46 properties
BEST_FIRST walk for 40004 steps (8 resets) in 48 ms. (816 steps per ms) remains 44/45 properties
BEST_FIRST walk for 40004 steps (8 resets) in 58 ms. (678 steps per ms) remains 43/44 properties
BEST_FIRST walk for 40004 steps (8 resets) in 55 ms. (714 steps per ms) remains 42/43 properties
BEST_FIRST walk for 40004 steps (8 resets) in 38 ms. (1025 steps per ms) remains 41/42 properties
BEST_FIRST walk for 40004 steps (8 resets) in 44 ms. (888 steps per ms) remains 40/41 properties
BEST_FIRST walk for 40004 steps (8 resets) in 40 ms. (975 steps per ms) remains 39/40 properties
BEST_FIRST walk for 40004 steps (8 resets) in 38 ms. (1025 steps per ms) remains 38/39 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 (8 resets) in 40 ms. (975 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (8 resets) in 46 ms. (851 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (8 resets) in 35 ms. (1111 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (8 resets) in 28 ms. (1379 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (8 resets) in 27 ms. (1428 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (8 resets) in 33 ms. (1176 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (8 resets) in 32 ms. (1212 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (8 resets) in 27 ms. (1428 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (8 resets) in 32 ms. (1212 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (11 resets) in 34 ms. (1142 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (11 resets) in 32 ms. (1212 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (11 resets) in 53 ms. (740 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 41 ms. (952 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 34 ms. (1142 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (11 resets) in 28 ms. (1379 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (11 resets) in 28 ms. (1379 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (11 resets) in 37 ms. (1052 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 (12 resets) in 37 ms. (1052 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 40 ms. (975 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40003 steps (10 resets) in 36 ms. (1081 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 40 ms. (975 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 (10 resets) in 43 ms. (909 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 38 ms. (1025 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 38 ms. (1025 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 (12 resets) in 38 ms. (1025 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (11 resets) in 34 ms. (1142 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 42 ms. (930 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 42 ms. (930 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 34 ms. (1142 steps per ms) remains 38/38 properties
BEST_FIRST walk for 40004 steps (12 resets) in 28 ms. (1379 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 (11 resets) in 31 ms. (1250 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 37 ms. (1052 steps per ms) remains 38/38 properties
// Phase 1: matrix 941 rows 586 cols
[2026-05-24 15:30:36] [INFO ] Computed 16 invariants in 35 ms
[2026-05-24 15:30:36] [INFO ] State equation strengthened by 97 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
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
Reachability property qltransition_682 is true.
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 10867 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
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
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 45010 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 55972ms 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 1 identical transitions.
Iterating global reduction 1 with 173 rules applied. Total rules applied 641 place count 430 transition count 455
Reduce places removed 173 places and 0 transitions.
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Iterating post reduction 1 with 176 rules applied. Total rules applied 817 place count 257 transition count 452
Discarding 78 places :
Symmetric choice reduction at 2 with 78 rule applications. Total rules 895 place count 179 transition count 374
Iterating global reduction 2 with 78 rules applied. Total rules applied 973 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 1051 place count 179 transition count 296
Applied a total of 1051 rules in 190 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 190 ms. Remains : 179/586 places, 296/941 transitions.
RANDOM walk for 441247 steps (4796 resets) in 6678 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 175083 ms.

BK_STOP 1779636695793

--------------------
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_1.0.0.202505121319.jar
+ VERSION=202505121319
+ echo 'Running Version 202505121319'
+ /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="gold2025"
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 gold2025"
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 r144-smll-177955812600247"
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 ;