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.r064-smll-177946904400297.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)
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=====================================================================
Generated by BenchKit 2-5973
Executing tool gold2025
Input is CloudDeployment-PT-4b, examination is QuasiLiveness
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r064-smll-177946904400297
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 948K
-rw-r--r-- 1 mcc users 6.2K Mar 6 11:04 CTLCardinality.txt
-rw-r--r-- 1 mcc users 62K Mar 6 11:04 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.6K Mar 6 11:04 CTLFireability.txt
-rw-r--r-- 1 mcc users 51K Mar 6 11:04 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Mar 3 18:30 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 3.8K Mar 15 08:15 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K Mar 15 08:15 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.4K Mar 15 08:15 LTLFireability.txt
-rw-r--r-- 1 mcc users 20K Mar 15 08:15 LTLFireability.xml
-rw-r--r-- 1 mcc users 7.0K Mar 6 11:04 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 62K Mar 6 11:04 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 7.1K Mar 6 11:04 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 57K Mar 6 11:04 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Mar 15 08:15 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Mar 15 08:15 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 3 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 591K 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 1779485219918

Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=QuasiLiveness
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=CloudDeployment-PT-4b
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
QuasiLiveness PT
Running Version 202505121319
[2026-05-22 21:27:02] [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]
[2026-05-22 21:27:02] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-22 21:27:03] [INFO ] Load time of PNML (sax parser for PT used): 433 ms
[2026-05-22 21:27:03] [INFO ] Transformed 1182 places.
[2026-05-22 21:27:03] [INFO ] Transformed 1824 transitions.
[2026-05-22 21:27:03] [INFO ] Found NUPN structural information;
[2026-05-22 21:27:03] [INFO ] Parsed PT model containing 1182 places and 1824 transitions and 8741 arcs in 699 ms.
Starting structural reductions in LIVENESS mode, iteration 0 : 1182/1182 places, 1824/1824 transitions.
Graph (trivial) has 1202 edges and 1182 vertex of which 336 / 1182 are part of one of the 32 SCC in 16 ms
Free SCC test removed 304 places
Ensure Unique test removed 340 transitions
Reduce isomorphic transitions removed 340 transitions.
Ensure Unique test removed 1 places
Reduce places removed 5 places and 0 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 432 transitions
Trivial Post-agglo rules discarded 432 transitions
Performed 432 trivial Post agglomeration. Transition count delta: 432
Iterating post reduction 0 with 437 rules applied. Total rules applied 438 place count 873 transition count 1052
Reduce places removed 432 places and 0 transitions.
Iterating post reduction 1 with 432 rules applied. Total rules applied 870 place count 441 transition count 1052
Performed 16 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 16 Pre rules applied. Total rules applied 870 place count 441 transition count 1036
Deduced a syphon composed of 16 places in 15 ms
Reduce places removed 16 places and 0 transitions.
Iterating global reduction 2 with 32 rules applied. Total rules applied 902 place count 425 transition count 1036
Performed 240 Post agglomeration using F-continuation condition.Transition count delta: 240
Deduced a syphon composed of 240 places in 2 ms
Reduce places removed 240 places and 0 transitions.
Iterating global reduction 2 with 480 rules applied. Total rules applied 1382 place count 185 transition count 796
Ensure Unique test removed 12 transitions
Reduce isomorphic transitions removed 12 transitions.
Iterating post reduction 2 with 12 rules applied. Total rules applied 1394 place count 185 transition count 784
Performed 24 Post agglomeration using F-continuation condition with reduction of 56 identical transitions.
Deduced a syphon composed of 24 places in 2 ms
Reduce places removed 24 places and 0 transitions.
Iterating global reduction 3 with 48 rules applied. Total rules applied 1442 place count 161 transition count 876
Applied a total of 1442 rules in 317 ms. Remains 161 /1182 variables (removed 1021) and now considering 876/1824 (removed 948) transitions.
[2026-05-22 21:27:04] [INFO ] Flow matrix only has 745 transitions (discarded 131 similar events)
// Phase 1: matrix 745 rows 161 cols
[2026-05-22 21:27:04] [INFO ] Computed 12 invariants in 30 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-22 21:27:05] [INFO ] Implicit Places using invariants in 1383 ms returned []
[2026-05-22 21:27:05] [INFO ] Flow matrix only has 745 transitions (discarded 131 similar events)
[2026-05-22 21:27:05] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-22 21:27:06] [INFO ] State equation strengthened by 205 read => feed constraints.
[2026-05-22 21:27:11] [INFO ] Implicit Places using invariants and state equation in 6268 ms returned []
Implicit Place search using SMT with State Equation took 7709 ms to find 0 implicit places.
Running 875 sub problems to find dead transitions.
[2026-05-22 21:27:11] [INFO ] Flow matrix only has 745 transitions (discarded 131 similar events)
[2026-05-22 21:27:11] [INFO ] Invariant cache hit.
[2026-05-22 21:27:11] [INFO ] State equation strengthened by 205 read => feed constraints.
Excessive predecessor constraint size, skipping predecessor.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/160 variables, 160/160 constraints. Problems are: Problem set: 0 solved, 875 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/160 variables, 12/172 constraints. Problems are: Problem set: 0 solved, 875 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/160 variables, 0/172 constraints. Problems are: Problem set: 0 solved, 875 unsolved
At refinement iteration 3 (OVERLAPS) 744/904 variables, 160/332 constraints. Problems are: Problem set: 0 solved, 875 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/904 variables, 204/536 constraints. Problems are: Problem set: 0 solved, 875 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 Real declared 904/906 variables, and 536 constraints, problems are : Problem set: 0 solved, 875 unsolved in 30078 ms.
Refiners :[Domain max(s): 160/161 constraints, Generalized P Invariants (flows): 12/12 constraints, State Equation: 160/161 constraints, ReadFeed: 204/205 constraints, PredecessorRefiner: 875/618 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 875 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/160 variables, 160/160 constraints. Problems are: Problem set: 0 solved, 875 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/160 variables, 12/172 constraints. Problems are: Problem set: 0 solved, 875 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/160 variables, 0/172 constraints. Problems are: Problem set: 0 solved, 875 unsolved
At refinement iteration 3 (OVERLAPS) 744/904 variables, 160/332 constraints. Problems are: Problem set: 0 solved, 875 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/904 variables, 204/536 constraints. Problems are: Problem set: 0 solved, 875 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 904/906 variables, and 1154 constraints, problems are : Problem set: 0 solved, 875 unsolved in 30701 ms.
Refiners :[Domain max(s): 160/161 constraints, Generalized P Invariants (flows): 12/12 constraints, State Equation: 160/161 constraints, ReadFeed: 204/205 constraints, PredecessorRefiner: 875/618 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 63206ms problems are : Problem set: 0 solved, 875 unsolved
Search for dead transitions found 0 dead transitions in 63253ms
Starting structural reductions in LIVENESS mode, iteration 1 : 161/1182 places, 876/1824 transitions.
Finished structural reductions in LIVENESS mode , in 1 iterations and 71329 ms. Remains : 161/1182 places, 876/1824 transitions.
Discarding 443 transitions out of 876. Remains 433
Initial state reduction rules removed 1 formulas.
[2026-05-22 21:28:16] [INFO ] Flatten gal took : 667 ms
[2026-05-22 21:28:17] [INFO ] Flatten gal took : 384 ms
[2026-05-22 21:28:17] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality9010150448151086254.gal : 117 ms
[2026-05-22 21:28:17] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality990615321317460343.prop : 35 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/ReachabilityCardinality9010150448151086254.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality990615321317460343.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 ...327
RANDOM walk for 40000 steps (1714 resets) in 8720 ms. (4 steps per ms) remains 353/432 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 11 ms. (33 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 8 ms. (44 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 12 ms. (31 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 7 ms. (50 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 8 ms. (44 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 8 ms. (44 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 13 ms. (28 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 7 ms. (50 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 7 ms. (50 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 11 ms. (33 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 8 ms. (44 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 8 ms. (44 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 9 ms. (40 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 7 ms. (50 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 7 ms. (50 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 8 ms. (44 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 10 ms. (36 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 8 ms. (44 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 7 ms. (50 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 7 ms. (50 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 13 ms. (28 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 7 ms. (50 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 9 ms. (40 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 9 ms. (40 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 7 ms. (50 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 9 ms. (40 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 6 ms. (57 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 353/353 properties
BEST_FIRST walk for 404 steps (8 resets) in 5 ms. (67 steps per ms) remains 353/353 properties
[2026-05-22 21:28:17] [INFO ] Flow matrix only has 745 transitions (discarded 131 similar events)
[2026-05-22 21:28:17] [INFO ] Invariant cache hit.
Loading property file /tmp/ReachabilityCardinality990615321317460343.prop.
[2026-05-22 21:28:17] [INFO ] State equation strengthened by 205 read => feed constraints.
Reachability property qltransition_698 is true.
Reachability property qltransition_696 is true.
Reachability property qltransition_694 is true.
Reachability property qltransition_692 is true.
Reachability property qltransition_86 is true.
Reachability property qltransition_64 is true.
Reachability property qltransition_42 is true.
Reachability property qltransition_20 is true.
SDD proceeding with computation,424 properties remain. new max is 2
SDD size :1 after 7
SDD proceeding with computation,424 properties remain. new max is 4
SDD size :7 after 21
SDD proceeding with computation,424 properties remain. new max is 8
SDD size :21 after 31
Reachability property qltransition_754 is true.
Reachability property qltransition_752 is true.
Reachability property qltransition_750 is true.
Reachability property qltransition_748 is true.
Reachability property qltransition_385 is true.
Reachability property qltransition_384 is true.
Reachability property qltransition_382 is true.
Reachability property qltransition_380 is true.
Reachability property qltransition_376 is true.
SDD proceeding with computation,415 properties remain. new max is 8
SDD size :31 after 601
Reachability property qltransition_389 is true.
Reachability property qltransition_388 is true.
Reachability property qltransition_387 is true.
Reachability property qltransition_386 is true.
SDD proceeding with computation,411 properties remain. new max is 8
SDD size :601 after 1027
SDD proceeding with computation,411 properties remain. new max is 16
SDD size :1027 after 1033
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
SDD proceeding with computation,411 properties remain. new max is 32
SDD size :1033 after 1073
SDD proceeding with computation,411 properties remain. new max is 64
SDD size :1073 after 1147
Reachability property qltransition_369 is true.
SDD proceeding with computation,410 properties remain. new max is 64
SDD size :1147 after 2171
Reachability property qltransition_366 is true.
Reachability property qltransition_363 is true.
Reachability property qltransition_362 is true.
Reachability property qltransition_75 is true.
Reachability property qltransition_72 is true.
SDD proceeding with computation,405 properties remain. new max is 64
SDD size :2171 after 4873
SDD proceeding with computation,405 properties remain. new max is 128
SDD size :4873 after 7011
SDD proceeding with computation,405 properties remain. new max is 256
SDD size :7011 after 11577
Reachability property qltransition_395 is true.
SDD proceeding with computation,404 properties remain. new max is 256
SDD size :11577 after 25561
Reachability property qltransition_392 is true.
Reachability property qltransition_383 is true.
At refinement iteration 0 (INCLUDED_ONLY) 0/132 variables, 132/132 constraints. Problems are: Problem set: 3 solved, 350 unsolved
Reachability property qltransition_377 is true.
Reachability property qltransition_53 is true.
Reachability property qltransition_50 is true.
SDD proceeding with computation,399 properties remain. new max is 256
SDD size :25561 after 66766
SDD proceeding with computation,399 properties remain. new max is 512
SDD size :66766 after 345337
SDD proceeding with computation,399 properties remain. new max is 1024
SDD size :345337 after 1.66422e+06
At refinement iteration 1 (INCLUDED_ONLY) 0/132 variables, 0/132 constraints. Problems are: Problem set: 10 solved, 343 unsolved
At refinement iteration 2 (OVERLAPS) 28/160 variables, 12/144 constraints. Problems are: Problem set: 10 solved, 343 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/160 variables, 28/172 constraints. Problems are: Problem set: 10 solved, 343 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 160/906 variables, and 172 constraints, problems are : Problem set: 10 solved, 343 unsolved in 5036 ms.
Refiners :[Domain max(s): 160/161 constraints, Generalized P Invariants (flows): 12/12 constraints, State Equation: 0/161 constraints, ReadFeed: 0/205 constraints, PredecessorRefiner: 353/96 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 10 solved, 343 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
Reachability property qltransition_818 is true.
Reachability property qltransition_816 is true.
Reachability property qltransition_814 is true.
Reachability property qltransition_812 is true.
Reachability property qltransition_810 is true.
Reachability property qltransition_808 is true.
Reachability property qltransition_806 is true.
Reachability property qltransition_804 is true.
Reachability property qltransition_796 is true.
Reachability property qltransition_770 is true.
At refinement iteration 0 (INCLUDED_ONLY) 0/122 variables, 122/122 constraints. Problems are: Problem set: 16 solved, 337 unsolved
Reachability property qltransition_762 is true.
Reachability property qltransition_760 is true.
At refinement iteration 1 (INCLUDED_ONLY) 0/122 variables, 0/122 constraints. Problems are: Problem set: 18 solved, 335 unsolved
At refinement iteration 2 (OVERLAPS) 28/150 variables, 12/134 constraints. Problems are: Problem set: 18 solved, 335 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/150 variables, 28/162 constraints. Problems are: Problem set: 18 solved, 335 unsolved
Reachability property qltransition_758 is true.
Solver is answering 'unknown', stopping.
Reachability property qltransition_756 is true.
After SMT solving in domain Int declared 150/906 variables, and 162 constraints, problems are : Problem set: 19 solved, 334 unsolved in 5019 ms.
Refiners :[Domain max(s): 150/161 constraints, Generalized P Invariants (flows): 12/12 constraints, State Equation: 0/161 constraints, ReadFeed: 0/205 constraints, PredecessorRefiner: 257/96 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 10976ms problems are : Problem set: 19 solved, 334 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 114 out of 161 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 161/161 places, 876/876 transitions.
Drop transitions (Empty/Sink Transition effects.) removed 36 transitions
Reduce isomorphic transitions removed 36 transitions.
Iterating post reduction 0 with 36 rules applied. Total rules applied 36 place count 161 transition count 840
Reachability property qltransition_740 is true.
Reachability property qltransition_714 is true.
Drop transitions (Redundant composition of simpler transitions.) removed 68 transitions
Redundant transition composition rules discarded 68 transitions
Iterating global reduction 1 with 68 rules applied. Total rules applied 104 place count 161 transition count 772
Free-agglomeration rule applied 2 times.
Iterating global reduction 1 with 2 rules applied. Total rules applied 106 place count 161 transition count 770
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 108 place count 159 transition count 770
Applied a total of 108 rules in 131 ms. Remains 159 /161 variables (removed 2) and now considering 770/876 (removed 106) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 132 ms. Remains : 159/161 places, 770/876 transitions.
RANDOM walk for 3246878 steps (119223 resets) in 120004 ms. (27 steps per ms) remains 322/331 properties
BEST_FIRST walk for 40003 steps (121 resets) in 197 ms. (202 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (124 resets) in 225 ms. (177 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (120 resets) in 206 ms. (193 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (164 resets) in 259 ms. (153 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40003 steps (190 resets) in 272 ms. (146 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (219 resets) in 304 ms. (131 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (223 resets) in 295 ms. (135 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (196 resets) in 258 ms. (154 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40003 steps (201 resets) in 275 ms. (144 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (227 resets) in 277 ms. (143 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (243 resets) in 356 ms. (112 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (221 resets) in 308 ms. (129 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (220 resets) in 297 ms. (134 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (260 resets) in 238 ms. (167 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40003 steps (269 resets) in 212 ms. (187 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (232 resets) in 179 ms. (222 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40003 steps (245 resets) in 217 ms. (183 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (279 resets) in 317 ms. (125 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (287 resets) in 330 ms. (120 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (159 resets) in 277 ms. (143 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (172 resets) in 266 ms. (149 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40003 steps (198 resets) in 277 ms. (143 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (208 resets) in 249 ms. (160 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (174 resets) in 278 ms. (143 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (182 resets) in 205 ms. (194 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (209 resets) in 246 ms. (161 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (223 resets) in 199 ms. (200 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (202 resets) in 212 ms. (187 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (207 resets) in 234 ms. (170 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40003 steps (249 resets) in 314 ms. (126 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40003 steps (252 resets) in 319 ms. (125 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40003 steps (212 resets) in 245 ms. (162 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40003 steps (217 resets) in 259 ms. (153 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40003 steps (264 resets) in 247 ms. (161 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (272 resets) in 227 ms. (175 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40003 steps (139 resets) in 173 ms. (229 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (148 resets) in 221 ms. (180 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40003 steps (175 resets) in 208 ms. (191 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (184 resets) in 259 ms. (153 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40003 steps (149 resets) in 244 ms. (163 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (156 resets) in 219 ms. (181 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40003 steps (186 resets) in 232 ms. (171 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40003 steps (199 resets) in 229 ms. (173 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40003 steps (168 resets) in 213 ms. (186 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (178 resets) in 229 ms. (173 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (210 resets) in 226 ms. (176 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40003 steps (229 resets) in 253 ms. (157 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (200 resets) in 243 ms. (163 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40003 steps (200 resets) in 218 ms. (182 steps per ms) remains 322/322 properties
BEST_FIRST walk for 40004 steps (230 resets) in 249 ms. (160 steps per ms) remains 322/322 properties
Reachability property qltransition_706 is true.
Reachability property qltransition_704 is true.
Reachability property qltransition_702 is true.
Reachability property qltransition_700 is true.
Interrupted probabilistic random walk after 8751220 steps, run timeout after 102001 ms. (steps per millisecond=85 ) properties seen :5 out of 322
Probabilistic random walk after 8751220 steps, saw 1319594 distinct states, run finished after 102015 ms. (steps per millisecond=85 ) properties seen :5
[2026-05-22 21:30:45] [INFO ] Flow matrix only has 674 transitions (discarded 96 similar events)
// Phase 1: matrix 674 rows 159 cols
[2026-05-22 21:30:45] [INFO ] Computed 12 invariants in 8 ms
[2026-05-22 21:30:45] [INFO ] State equation strengthened by 184 read => feed constraints.
Reachability property qltransition_684 is true.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/95 variables, 95/95 constraints. Problems are: Problem set: 0 solved, 313 unsolved
Reachability property qltransition_658 is true.
Reachability property qltransition_608 is true.
Reachability property qltransition_604 is true.
Reachability property qltransition_600 is true.
Reachability property qltransition_596 is true.
Reachability property qltransition_572 is true.
At refinement iteration 1 (INCLUDED_ONLY) 0/95 variables, 0/95 constraints. Problems are: Problem set: 6 solved, 307 unsolved
Reachability property qltransition_568 is true.
At refinement iteration 2 (OVERLAPS) 32/127 variables, 12/107 constraints. Problems are: Problem set: 7 solved, 306 unsolved
Reachability property qltransition_564 is true.
Reachability property qltransition_560 is true.
Reachability property qltransition_556 is true.
Reachability property qltransition_552 is true.
Reachability property qltransition_548 is true.
Reachability property qltransition_544 is true.
Reachability property qltransition_540 is true.
Reachability property qltransition_536 is true.
At refinement iteration 3 (INCLUDED_ONLY) 0/127 variables, 32/139 constraints. Problems are: Problem set: 7 solved, 306 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/127 variables, 0/139 constraints. Problems are: Problem set: 15 solved, 298 unsolved
At refinement iteration 5 (OVERLAPS) 660/787 variables, 127/266 constraints. Problems are: Problem set: 15 solved, 298 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/787 variables, 174/440 constraints. Problems are: Problem set: 15 solved, 298 unsolved
Reachability property qltransition_532 is true.
At refinement iteration 7 (INCLUDED_ONLY) 0/787 variables, 0/440 constraints. Problems are: Problem set: 16 solved, 297 unsolved
Problem qltransition_90 is UNSAT
FORMULA QuasiLiveness FALSE TECHNIQUES RANDOM_WALK PROBABILISTIC_WALK DECISION_DIAGRAMS COLLATERAL_PROCESSING SMT_REFINEMENT TOPOLOGICAL INITIAL_STATE
SMT process timed out in 28643ms, After SMT, problems are : Problem set: 17 solved, 296 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 79 out of 159 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 159/159 places, 770/770 transitions.
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: -13
Deduced a syphon composed of 2 places in 1 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 0 with 4 rules applied. Total rules applied 4 place count 157 transition count 783
Drop transitions (Empty/Sink Transition effects.) removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 6 place count 157 transition count 781
Drop transitions (Redundant composition of simpler transitions.) removed 14 transitions
Redundant transition composition rules discarded 14 transitions
Iterating global reduction 1 with 14 rules applied. Total rules applied 20 place count 157 transition count 767
Free-agglomeration rule applied 4 times.
Iterating global reduction 1 with 4 rules applied. Total rules applied 24 place count 157 transition count 763
Reduce places removed 4 places and 0 transitions.
Drop transitions (Empty/Sink Transition effects.) removed 3 transitions
Ensure Unique test removed 12 transitions
Reduce isomorphic transitions removed 15 transitions.
Iterating post reduction 1 with 19 rules applied. Total rules applied 43 place count 153 transition count 748
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 44 place count 152 transition count 743
Iterating global reduction 2 with 1 rules applied. Total rules applied 45 place count 152 transition count 743
Applied a total of 45 rules in 139 ms. Remains 152 /159 variables (removed 7) and now considering 743/770 (removed 27) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 139 ms. Remains : 152/159 places, 743/770 transitions.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
Total runtime 251096 ms.

BK_STOP 1779485474302

--------------------
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="CloudDeployment-PT-4b"
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 CloudDeployment-PT-4b, 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 r064-smll-177946904400297"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/CloudDeployment-PT-4b.tgz
mv CloudDeployment-PT-4b 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 ;