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.r194-tall-177969914100444.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 itstools
Input is NQueens-PT-30, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r194-tall-177969914100444
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 1.3M
-rw-r--r-- 1 mcc users 6.6K Mar 8 06:31 CTLCardinality.txt
-rw-r--r-- 1 mcc users 64K Mar 8 06:31 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.0K Mar 8 06:31 CTLFireability.txt
-rw-r--r-- 1 mcc users 36K Mar 8 06:31 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Mar 3 18:30 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.5K Mar 3 18:30 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 4.0K Mar 16 08:20 LTLCardinality.txt
-rw-r--r-- 1 mcc users 28K Mar 16 08:20 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.7K Mar 16 08:20 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K Mar 16 08:20 LTLFireability.xml
-rw-r--r-- 1 mcc users 19K Mar 8 06:31 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 200K Mar 8 06:31 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 13K Mar 8 06:31 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 88K Mar 8 06:31 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Mar 16 08:20 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K Mar 16 08:20 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 759K 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

echo here is the order used to build the result vector(from xml file)
FORMULA_NAME NQueens-PT-30-LTLFireability-00
FORMULA_NAME NQueens-PT-30-LTLFireability-01
FORMULA_NAME NQueens-PT-30-LTLFireability-02
FORMULA_NAME NQueens-PT-30-LTLFireability-03
FORMULA_NAME NQueens-PT-30-LTLFireability-04
FORMULA_NAME NQueens-PT-30-LTLFireability-05
FORMULA_NAME NQueens-PT-30-LTLFireability-06
FORMULA_NAME NQueens-PT-30-LTLFireability-07
FORMULA_NAME NQueens-PT-30-LTLFireability-08
FORMULA_NAME NQueens-PT-30-LTLFireability-09
FORMULA_NAME NQueens-PT-30-LTLFireability-10
FORMULA_NAME NQueens-PT-30-LTLFireability-11
FORMULA_NAME NQueens-PT-30-LTLFireability-12
FORMULA_NAME NQueens-PT-30-LTLFireability-13
FORMULA_NAME NQueens-PT-30-LTLFireability-14
FORMULA_NAME NQueens-PT-30-LTLFireability-15

=== Now, execution of the tool begins

BK_START 1779779969914

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=LTLFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=NQueens-PT-30
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
LTLFireability PT
Running Version 202604301425
[2026-05-26 07:19:31] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, LTLFireability, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2026-05-26 07:19:31] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-26 07:19:31] [INFO ] Load time of PNML (sax parser for PT used): 144 ms
[2026-05-26 07:19:31] [INFO ] Transformed 1080 places.
[2026-05-26 07:19:31] [INFO ] Transformed 900 transitions.
[2026-05-26 07:19:31] [INFO ] Found NUPN structural information;
[2026-05-26 07:19:31] [INFO ] Parsed PT model containing 1080 places and 900 transitions and 4500 arcs in 243 ms.
Parsed 16 properties from file /home/mcc/execution/LTLFireability.xml in 9 ms.
Working with output stream class java.io.PrintStream
Initial state reduction rules removed 2 formulas.
Reduce places removed 2 places and 0 transitions.
FORMULA NQueens-PT-30-LTLFireability-07 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA NQueens-PT-30-LTLFireability-08 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Support contains 97 out of 1078 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 1078/1078 places, 900/900 transitions.
Reduce places removed 900 places and 0 transitions.
Iterating post reduction 0 with 900 rules applied. Total rules applied 900 place count 178 transition count 900
Applied a total of 900 rules in 28 ms. Remains 178 /1078 variables (removed 900) and now considering 900/900 (removed 0) transitions.
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-1195559279038681301.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-5811305418272771553.kers'
[2026-05-26 07:19:31] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-1195559279038681301.kers, --Pflows, --basisKERS=/tmp/petrispot-output-5811305418272771553.kers]
Culled 0 columns in 0 ms.
// Phase 1: matrix 900 rows 178 cols 3600 entries
Finished phase 1 with 74 SingleSign rule and 97 generalized
[2026-05-26 07:19:31] [INFO ] Computed 7 invariants in 32 ms
Computed 7 P flows in 33 ms.
Exported basis to /tmp/petrispot-output-5811305418272771553.kers
Total runtime 34 ms.
[2026-05-26 07:19:41] [INFO ] Implicit Places using invariants in 10210 ms returned []
[2026-05-26 07:19:41] [INFO ] Invariant cache hit.
[2026-05-26 07:22:21] [INFO ] Implicit Places using invariants and state equation in 160018 ms returned []
Implicit Place search using SMT with State Equation took 170274 ms to find 0 implicit places.
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 3ms
Starting structural reductions in LTL mode, iteration 1 : 178/1078 places, 900/900 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 170351 ms. Remains : 178/1078 places, 900/900 transitions.
Starting structural reductions in LTL mode, iteration 0 : 178/178 places, 900/900 transitions.
Applied a total of 0 rules in 4 ms. Remains 178 /178 variables (removed 0) and now considering 900/900 (removed 0) transitions.
[2026-05-26 07:22:21] [INFO ] Invariant cache hit.
[2026-05-26 07:22:31] [INFO ] Implicit Places using invariants in 9966 ms returned []
[2026-05-26 07:22:31] [INFO ] Invariant cache hit.
[2026-05-26 07:25:11] [INFO ] Implicit Places using invariants and state equation in 160019 ms returned []
Implicit Place search using SMT with State Equation took 169993 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 169999 ms. Remains : 178/178 places, 900/900 transitions.
Support contains 97 out of 178 places after structural reductions.
[2026-05-26 07:25:12] [INFO ] Flatten gal took : 177 ms
[2026-05-26 07:25:12] [INFO ] Flatten gal took : 139 ms
[2026-05-26 07:25:12] [INFO ] Input system was already deterministic with 900 transitions.
Support contains 94 out of 178 places (down from 97) after GAL structural reductions.
Reduction of identical properties reduced properties to check from 34 to 32
RANDOM walk for 108 steps (1 resets) in 59 ms. (1 steps per ms) remains 0/32 properties
FORMULA NQueens-PT-30-LTLFireability-15 FALSE TECHNIQUES REACHABILITY_KNOWLEDGE
Computed a total of 178 stabilizing places and 900 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 178 transition count 900
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X((p0||(F(p1)&&X((!p0 U (p2||G(!p0))))))))'
Support contains 11 out of 178 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 178/178 places, 900/900 transitions.
Applied a total of 0 rules in 17 ms. Remains 178 /178 variables (removed 0) and now considering 900/900 (removed 0) transitions.
[2026-05-26 07:25:13] [INFO ] Invariant cache hit.
[2026-05-26 07:25:38] [INFO ] Implicit Places using invariants in 24738 ms returned []
[2026-05-26 07:25:38] [INFO ] Invariant cache hit.
[2026-05-26 07:28:14] [INFO ] Performed 1/178 implicitness test of which 0 returned IMPLICIT in 107 seconds.
[2026-05-26 07:28:18] [INFO ] Implicit Places using invariants and state equation in 160017 ms returned []
Implicit Place search using SMT with State Equation took 184759 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 184777 ms. Remains : 178/178 places, 900/900 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X((p0||(F(p1)&&X((!p0 U (p2||G(!p0))))))))'
Stuttering acceptance computed with spot in 523 ms :[(AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1)), (NOT p1), (AND p0 (NOT p2)), true]
Running random walk in product with property : NQueens-PT-30-LTLFireability-00
Stuttering criterion allowed to conclude after 210 steps with 65 reset in 24 ms.
FORMULA NQueens-PT-30-LTLFireability-00 FALSE TECHNIQUES STUTTER_TEST
Treatment of property NQueens-PT-30-LTLFireability-00 finished in 185402 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(((F(p0) U p1)&&F(p2)&&X(X(G(p3)))))'
Support contains 12 out of 178 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 178/178 places, 900/900 transitions.
Applied a total of 0 rules in 11 ms. Remains 178 /178 variables (removed 0) and now considering 900/900 (removed 0) transitions.
[2026-05-26 07:28:18] [INFO ] Invariant cache hit.
[2026-05-26 07:28:42] [INFO ] Implicit Places using invariants in 23938 ms returned []
[2026-05-26 07:28:42] [INFO ] Invariant cache hit.
[2026-05-26 07:31:22] [INFO ] Implicit Places using invariants and state equation in 160012 ms returned []
Implicit Place search using SMT with State Equation took 183954 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 183966 ms. Remains : 178/178 places, 900/900 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(((F(p0) U p1)&&F(p2)&&X(X(G(p3)))))'
Stuttering acceptance computed with spot in 239 ms :[(OR (NOT p2) (NOT p1) (NOT p3)), (NOT p0), (NOT p1), (NOT p2), (NOT p3), (NOT p3), true]
Running random walk in product with property : NQueens-PT-30-LTLFireability-01
Entered a terminal (fully accepting) state of product in 2 steps with 0 reset in 1 ms.
FORMULA NQueens-PT-30-LTLFireability-01 FALSE TECHNIQUES STUTTER_TEST
Treatment of property NQueens-PT-30-LTLFireability-01 finished in 184257 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((G(p0) U (X(X(X(p1)))&&(G(!p2)||(!p2&&F(!p3))))))'
Support contains 16 out of 178 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 178/178 places, 900/900 transitions.
Applied a total of 0 rules in 4 ms. Remains 178 /178 variables (removed 0) and now considering 900/900 (removed 0) transitions.
[2026-05-26 07:31:23] [INFO ] Invariant cache hit.
[2026-05-26 07:31:46] [INFO ] Implicit Places using invariants in 23317 ms returned []
[2026-05-26 07:31:46] [INFO ] Invariant cache hit.
[2026-05-26 07:33:08] [INFO ] Performed 1/178 implicitness test of which 0 returned IMPLICIT in 33 seconds.
[2026-05-26 07:34:26] [INFO ] Implicit Places using invariants and state equation in 160011 ms returned []
Implicit Place search using SMT with State Equation took 183335 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 183342 ms. Remains : 178/178 places, 900/900 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((G(p0) U (X(X(X(p1)))&&(G(!p2)||(!p2&&F(!p3))))))'
Stuttering acceptance computed with spot in 1884 ms :[(OR (NOT p1) p2), true, (NOT p0), (NOT p1), (NOT p1), (AND p3 p2), (AND p2 p3), (NOT p1), (NOT p1), (AND (NOT p1) (NOT p0)), (NOT p1), (AND (NOT p1) p2 p3), (NOT p1), p3, (AND p3 (NOT p0)), (OR (AND (NOT p1) p3) (AND p2 p3)), (AND (NOT p0) (NOT p1)), (NOT p1), (AND (NOT p1) (NOT p0)), (NOT p1), (AND (NOT p1) p2 p3), (NOT p1), (AND p3 p2 (NOT p1)), (AND p3 (NOT p1)), (AND p3 (NOT p0) (NOT p1)), (AND (NOT p1) p2 p3), (AND (NOT p1) p3), (NOT p1), (NOT p1), (NOT p1), (AND p3 (NOT p1)), (AND (NOT p1) p3), (AND p3 (NOT p1)), (AND p3 (NOT p1) (NOT p0)), (AND (NOT p1) p3), (AND (NOT p1) p3), (AND p3 (NOT p1)), (AND p3 (NOT p1) (NOT p0)), (AND (NOT p1) p3), (AND (NOT p1) p3), (AND p3 (NOT p1)), (AND (NOT p1) p3)]
Running random walk in product with property : NQueens-PT-30-LTLFireability-02
Entered a terminal (fully accepting) state of product in 3 steps with 0 reset in 1 ms.
FORMULA NQueens-PT-30-LTLFireability-02 FALSE TECHNIQUES STUTTER_TEST
Treatment of property NQueens-PT-30-LTLFireability-02 finished in 185348 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G(F((G(p1)||p0))))'
Support contains 7 out of 178 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 178/178 places, 900/900 transitions.
Applied a total of 0 rules in 18 ms. Remains 178 /178 variables (removed 0) and now considering 900/900 (removed 0) transitions.
[2026-05-26 07:34:28] [INFO ] Invariant cache hit.
[2026-05-26 07:34:53] [INFO ] Implicit Places using invariants in 25463 ms returned []
[2026-05-26 07:34:53] [INFO ] Invariant cache hit.
[2026-05-26 07:37:33] [INFO ] Implicit Places using invariants and state equation in 160007 ms returned []
Implicit Place search using SMT with State Equation took 185477 ms to find 0 implicit places.
[2026-05-26 07:37:33] [INFO ] Redundant transitions in 55 ms returned []
Skipped dead transition search.
Finished structural reductions in SI_LTL mode , in 1 iterations and 185560 ms. Remains : 178/178 places, 900/900 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G(F((G(p1)||p0))))'
Stuttering acceptance computed with spot in 80 ms :[(AND (NOT p1) (NOT p0)), (AND (NOT p1) (NOT p0))]
Running random walk in product with property : NQueens-PT-30-LTLFireability-03
Product exploration explored 100000 steps with 8433 reset in 8970 ms.
Product exploration explored 100000 steps with 8423 reset in 8907 ms.
Computed a total of 178 stabilizing places and 900 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 178 transition count 900
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Property proved to be true by K+ with min(!phi)
Knowledge based reduction with 3 factoid took 19 ms. Proved property starting from automaton with 2 states, 4 edges and 2 AP (stutter insensitive
Knowledge-based reduction took 1830 ms.
FORMULA NQueens-PT-30-LTLFireability-03 TRUE TECHNIQUES KNOWLEDGE
Treatment of property NQueens-PT-30-LTLFireability-03 finished in 205392 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(X((p0||G(F((!p0 U (G(!p0)||(!p0&&G(!p1))))))))))'
Support contains 7 out of 178 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 178/178 places, 900/900 transitions.
Applied a total of 0 rules in 5 ms. Remains 178 /178 variables (removed 0) and now considering 900/900 (removed 0) transitions.
[2026-05-26 07:37:53] [INFO ] Invariant cache hit.
[2026-05-26 07:38:18] [INFO ] Implicit Places using invariants in 24942 ms returned []
[2026-05-26 07:38:18] [INFO ] Invariant cache hit.
[2026-05-26 07:40:58] [INFO ] Performed 1/178 implicitness test of which 0 returned IMPLICIT in 111 seconds.
[2026-05-26 07:40:58] [INFO ] Implicit Places using invariants and state equation in 160020 ms returned []
Implicit Place search using SMT with State Equation took 184965 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 184972 ms. Remains : 178/178 places, 900/900 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(X((G(F((!p0 U (G(!p0)||(!p0&&G(!p1))))))||p0))))'
Stuttering acceptance computed with spot in 256 ms :[false, false, false, p0, p0, (AND p0 p1)]
Running random walk in product with property : NQueens-PT-30-LTLFireability-04
Product exploration explored 100000 steps with 12791 reset in 7602 ms.
Product exploration explored 100000 steps with 12341 reset in 7590 ms.
Computed a total of 178 stabilizing places and 900 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 178 transition count 900
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Property proved to be true by K+ with min(!phi)
Knowledge based reduction with 3 factoid took 17 ms. Proved property starting from automaton with 6 states, 13 edges and 2 AP (stutter sensitive
Knowledge-based reduction took 1764 ms.
FORMULA NQueens-PT-30-LTLFireability-04 TRUE TECHNIQUES KNOWLEDGE
Treatment of property NQueens-PT-30-LTLFireability-04 finished in 202234 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G(F(p0)))'
Support contains 4 out of 178 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 178/178 places, 900/900 transitions.
Applied a total of 0 rules in 16 ms. Remains 178 /178 variables (removed 0) and now considering 900/900 (removed 0) transitions.
[2026-05-26 07:41:15] [INFO ] Invariant cache hit.
[2026-05-26 07:41:41] [INFO ] Implicit Places using invariants in 25451 ms returned []
[2026-05-26 07:41:41] [INFO ] Invariant cache hit.
[2026-05-26 07:44:21] [INFO ] Implicit Places using invariants and state equation in 160025 ms returned []
Implicit Place search using SMT with State Equation took 185480 ms to find 0 implicit places.
[2026-05-26 07:44:21] [INFO ] Redundant transitions in 12 ms returned []
Skipped dead transition search.
Finished structural reductions in SI_LTL mode , in 1 iterations and 185518 ms. Remains : 178/178 places, 900/900 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G(F(p0)))'
Stuttering acceptance computed with spot in 89 ms :[(NOT p0), (NOT p0)]
Running random walk in product with property : NQueens-PT-30-LTLFireability-05
Product exploration explored 100000 steps with 9147 reset in 9097 ms.
Product exploration explored 100000 steps with 9281 reset in 9233 ms.
Computed a total of 178 stabilizing places and 900 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 178 transition count 900
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Property proved to be true by K+ with min(!phi)
Knowledge based reduction with 2 factoid took 18 ms. Proved property starting from automaton with 2 states, 3 edges and 1 AP (stutter insensitive
Knowledge-based reduction took 1814 ms.
FORMULA NQueens-PT-30-LTLFireability-05 TRUE TECHNIQUES KNOWLEDGE
Treatment of property NQueens-PT-30-LTLFireability-05 finished in 205789 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(G((X((p1||X(X(p2))))||p0))))'
Support contains 8 out of 178 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 178/178 places, 900/900 transitions.
Applied a total of 0 rules in 7 ms. Remains 178 /178 variables (removed 0) and now considering 900/900 (removed 0) transitions.
[2026-05-26 07:44:41] [INFO ] Invariant cache hit.
[2026-05-26 07:45:06] [INFO ] Implicit Places using invariants in 24724 ms returned []
[2026-05-26 07:45:06] [INFO ] Invariant cache hit.
[2026-05-26 07:47:46] [INFO ] Implicit Places using invariants and state equation in 160005 ms returned []
Implicit Place search using SMT with State Equation took 184751 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 184759 ms. Remains : 178/178 places, 900/900 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(G((X((p1||X(X(p2))))||p0))))'
Stuttering acceptance computed with spot in 211 ms :[(AND (NOT p0) (NOT p1) (NOT p2)), (AND (NOT p0) (NOT p1) (NOT p2)), (AND (NOT p1) (NOT p2)), (NOT p2), (NOT p2), true]
Running random walk in product with property : NQueens-PT-30-LTLFireability-06
Entered a terminal (fully accepting) state of product in 49 steps with 5 reset in 8 ms.
FORMULA NQueens-PT-30-LTLFireability-06 FALSE TECHNIQUES STUTTER_TEST
Treatment of property NQueens-PT-30-LTLFireability-06 finished in 185014 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G((F(p0)||X(X(X(X(F(p1))))))))'
Support contains 7 out of 178 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 178/178 places, 900/900 transitions.
Applied a total of 0 rules in 16 ms. Remains 178 /178 variables (removed 0) and now considering 900/900 (removed 0) transitions.
[2026-05-26 07:47:46] [INFO ] Invariant cache hit.
[2026-05-26 07:48:11] [INFO ] Implicit Places using invariants in 24712 ms returned []
[2026-05-26 07:48:11] [INFO ] Invariant cache hit.
[2026-05-26 07:50:51] [INFO ] Implicit Places using invariants and state equation in 160008 ms returned []
Implicit Place search using SMT with State Equation took 184724 ms to find 0 implicit places.
[2026-05-26 07:50:51] [INFO ] Redundant transitions in 11 ms returned []
Skipped dead transition search.
Finished structural reductions in SI_LTL mode , in 1 iterations and 184758 ms. Remains : 178/178 places, 900/900 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G((F(p0)||X(X(X(X(F(p1))))))))'
Stuttering acceptance computed with spot in 159 ms :[(AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1))]
Running random walk in product with property : NQueens-PT-30-LTLFireability-09
Product exploration explored 100000 steps with 6771 reset in 8864 ms.
Product exploration explored 100000 steps with 6796 reset in 8943 ms.
Computed a total of 178 stabilizing places and 900 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 178 transition count 900
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Property proved to be true by K+ with min(!phi)
Knowledge based reduction with 3 factoid took 12 ms. Proved property starting from automaton with 5 states, 6 edges and 2 AP (stutter insensitive
Knowledge-based reduction took 1804 ms.
FORMULA NQueens-PT-30-LTLFireability-09 TRUE TECHNIQUES KNOWLEDGE
Treatment of property NQueens-PT-30-LTLFireability-09 finished in 204578 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(((p0 U X((p1 U X(p2))))||X(p0)))'
Support contains 11 out of 178 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 178/178 places, 900/900 transitions.
Applied a total of 0 rules in 3 ms. Remains 178 /178 variables (removed 0) and now considering 900/900 (removed 0) transitions.
[2026-05-26 07:51:11] [INFO ] Invariant cache hit.
[2026-05-26 07:51:35] [INFO ] Implicit Places using invariants in 24328 ms returned []
[2026-05-26 07:51:35] [INFO ] Invariant cache hit.
[2026-05-26 07:54:15] [INFO ] Implicit Places using invariants and state equation in 160009 ms returned []
Implicit Place search using SMT with State Equation took 184340 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 184345 ms. Remains : 178/178 places, 900/900 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(((p0 U X((p1 U X(p2))))||X(p0)))'
Stuttering acceptance computed with spot in 215 ms :[true, (AND (NOT p0) (NOT p2)), (NOT p2), (NOT p2), (AND (NOT p0) (NOT p2)), (AND (NOT p0) (NOT p2))]
Running random walk in product with property : NQueens-PT-30-LTLFireability-10
Entered a terminal (fully accepting) state of product in 6 steps with 1 reset in 4 ms.
FORMULA NQueens-PT-30-LTLFireability-10 FALSE TECHNIQUES STUTTER_TEST
Treatment of property NQueens-PT-30-LTLFireability-10 finished in 184604 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X((((F(p0) U X(p1)) U (p2 U p3)) U X(p0))))'
Support contains 15 out of 178 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 178/178 places, 900/900 transitions.
Applied a total of 0 rules in 7 ms. Remains 178 /178 variables (removed 0) and now considering 900/900 (removed 0) transitions.
[2026-05-26 07:54:16] [INFO ] Invariant cache hit.
[2026-05-26 07:54:39] [INFO ] Implicit Places using invariants in 23495 ms returned []
[2026-05-26 07:54:39] [INFO ] Invariant cache hit.
[2026-05-26 07:57:19] [INFO ] Implicit Places using invariants and state equation in 160026 ms returned []
Implicit Place search using SMT with State Equation took 183535 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 183544 ms. Remains : 178/178 places, 900/900 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X((((F(p0) U X(p1)) U (p2 U p3)) U X(p0))))'
Stuttering acceptance computed with spot in 484 ms :[(NOT p0), (NOT p0), (NOT p0), (AND (NOT p0) (NOT p1)), (OR (AND (NOT p0) (NOT p1) p3) (AND (NOT p0) (NOT p1) p2)), (AND (NOT p0) (NOT p3)), (AND (NOT p3) (NOT p2) (NOT p0) (NOT p1)), (NOT p0), (NOT p1), (NOT p3), (AND (NOT p0) p1 (NOT p3))]
Running random walk in product with property : NQueens-PT-30-LTLFireability-11
Stuttering criterion allowed to conclude after 28 steps with 0 reset in 5 ms.
FORMULA NQueens-PT-30-LTLFireability-11 FALSE TECHNIQUES STUTTER_TEST
Treatment of property NQueens-PT-30-LTLFireability-11 finished in 184125 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((X((p0||F(p1))) U (G(p0)||X(p2))))'
Support contains 12 out of 178 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 178/178 places, 900/900 transitions.
Applied a total of 0 rules in 4 ms. Remains 178 /178 variables (removed 0) and now considering 900/900 (removed 0) transitions.
[2026-05-26 07:57:20] [INFO ] Invariant cache hit.
[2026-05-26 07:57:44] [INFO ] Implicit Places using invariants in 24416 ms returned []
[2026-05-26 07:57:44] [INFO ] Invariant cache hit.
[2026-05-26 07:59:06] [INFO ] Performed 1/178 implicitness test of which 0 returned IMPLICIT in 33 seconds.
[2026-05-26 08:00:24] [INFO ] Implicit Places using invariants and state equation in 160018 ms returned []
Implicit Place search using SMT with State Equation took 184443 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 184449 ms. Remains : 178/178 places, 900/900 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((X((F(p0)||p1)) U (G(p1)||X(p2))))'
Stuttering acceptance computed with spot in 121 ms :[(AND (NOT p1) (NOT p2)), (AND (NOT p1) (NOT p2)), (NOT p0)]
Running random walk in product with property : NQueens-PT-30-LTLFireability-12
Stuttering criterion allowed to conclude after 32 steps with 3 reset in 6 ms.
FORMULA NQueens-PT-30-LTLFireability-12 FALSE TECHNIQUES STUTTER_TEST
Treatment of property NQueens-PT-30-LTLFireability-12 finished in 184624 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(((!p0&&G(!p1)&&X(G(p0))) U G(p2)))'
Support contains 12 out of 178 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 178/178 places, 900/900 transitions.
Applied a total of 0 rules in 4 ms. Remains 178 /178 variables (removed 0) and now considering 900/900 (removed 0) transitions.
[2026-05-26 08:00:24] [INFO ] Invariant cache hit.
[2026-05-26 08:00:49] [INFO ] Implicit Places using invariants in 24358 ms returned []
[2026-05-26 08:00:49] [INFO ] Invariant cache hit.
[2026-05-26 08:03:29] [INFO ] Implicit Places using invariants and state equation in 160013 ms returned []
Implicit Place search using SMT with State Equation took 184378 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 184386 ms. Remains : 178/178 places, 900/900 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(((!p0&&G(!p1)&&X(G(p0))) U G(p2)))'
Stuttering acceptance computed with spot in 137 ms :[true, (NOT p2), (OR (NOT p0) (NOT p2) p1), (NOT p2)]
Running random walk in product with property : NQueens-PT-30-LTLFireability-13
Entered a terminal (fully accepting) state of product in 4 steps with 0 reset in 3 ms.
FORMULA NQueens-PT-30-LTLFireability-13 FALSE TECHNIQUES STUTTER_TEST
Treatment of property NQueens-PT-30-LTLFireability-13 finished in 184565 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F(G(p0)))'
Support contains 8 out of 178 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 178/178 places, 900/900 transitions.
Applied a total of 0 rules in 16 ms. Remains 178 /178 variables (removed 0) and now considering 900/900 (removed 0) transitions.
[2026-05-26 08:03:29] [INFO ] Invariant cache hit.
[2026-05-26 08:03:53] [INFO ] Implicit Places using invariants in 24590 ms returned []
[2026-05-26 08:03:53] [INFO ] Invariant cache hit.
[2026-05-26 08:06:33] [INFO ] Implicit Places using invariants and state equation in 160014 ms returned []
Implicit Place search using SMT with State Equation took 184612 ms to find 0 implicit places.
[2026-05-26 08:06:33] [INFO ] Redundant transitions in 14 ms returned []
Skipped dead transition search.
Finished structural reductions in SI_LTL mode , in 1 iterations and 184656 ms. Remains : 178/178 places, 900/900 transitions.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F(G(p0)))'
Stuttering acceptance computed with spot in 45 ms :[(NOT p0)]
Running random walk in product with property : NQueens-PT-30-LTLFireability-14
Product exploration explored 100000 steps with 3584 reset in 5613 ms.
Product exploration explored 100000 steps with 3583 reset in 5579 ms.
Computed a total of 178 stabilizing places and 900 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 178 transition count 900
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Property proved to be true by K+ with min(!phi)
Knowledge based reduction with 2 factoid took 18 ms. Proved property starting from automaton with 1 states, 2 edges and 1 AP (stutter insensitive
Knowledge-based reduction took 1844 ms.
FORMULA NQueens-PT-30-LTLFireability-14 TRUE TECHNIQUES KNOWLEDGE
Treatment of property NQueens-PT-30-LTLFireability-14 finished in 197770 ms.
All properties solved by simple procedures.
Total runtime 2835976 ms.

BK_STOP 1779782807402

--------------------
content from stderr:

+ export BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ LTLFireability = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution LTLFireability -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202604301425.jar
+ VERSION=202604301425
+ echo 'Running Version 202604301425'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination LTLFireability -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600

Sequence of Actions to be Executed by the VM

This is useful if one wants to reexecute the tool in the VM from the submitted image disk.

set -x
# this is for BenchKit: configuration of major elements for the test
export BK_INPUT="NQueens-PT-30"
export BK_EXAMINATION="LTLFireability"
export BK_TOOL="itstools"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"
export BK_BIN_PATH="/home/mcc/BenchKit/bin/"

# this is specific to your benchmark or test

export BIN_DIR="$HOME/BenchKit/bin"

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

# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-5973"
echo " Executing tool itstools"
echo " Input is NQueens-PT-30, examination is LTLFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r194-tall-177969914100444"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/NQueens-PT-30.tgz
mv NQueens-PT-30 execution
cd execution
if [ "LTLFireability" = "ReachabilityDeadlock" ] || [ "LTLFireability" = "UpperBounds" ] || [ "LTLFireability" = "QuasiLiveness" ] || [ "LTLFireability" = "StableMarking" ] || [ "LTLFireability" = "Liveness" ] || [ "LTLFireability" = "OneSafe" ] || [ "LTLFireability" = "StateSpace" ]; then
rm -f GenericPropertiesVerdict.xml
fi
pwd
ls -lh

echo
echo "--------------------"
echo "content from stdout:"
echo
echo "=== Data for post analysis generated by BenchKit (invocation template)"
echo
if [ "LTLFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "LTLFireability" != "StateSpace" ] ; then
echo "The expected result is a vector of booleans"
echo BOOL_VECTOR
else
echo "no data necessary for post analysis"
fi
echo
if [ -f "LTLFireability.xml" ] ; then # for cunf (txt files deleted;-)
echo echo "here is the order used to build the result vector(from xml file)"
for x in $(grep '' LTLFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "LTLFireability" = "ReachabilityDeadlock" ] || [ "LTLFireability" = "QuasiLiveness" ] || [ "LTLFireability" = "StableMarking" ] || [ "LTLFireability" = "Liveness" ] || [ "LTLFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME LTLFireability"
fi
echo
echo "=== Now, execution of the tool begins"
echo
echo -n "BK_START "
date -u +%s%3N
echo
timeout -s 9 $BK_TIME_CONFINEMENT bash -c "/home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n \"BK_STOP \" ; date -u +%s%3N"
if [ $? -eq 137 ] ; then
echo
echo "BK_TIME_CONFINEMENT_REACHED"
fi
echo
echo "--------------------"
echo "content from stderr:"
echo
cat STDERR ;