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-177969913900108.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2026-input.qcow2 backing_fmt=qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
...........................................
=====================================================================
Generated by BenchKit 2-5973
Executing tool itstools
Input is NeighborGrid-PT-d2n3m1c12, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r194-tall-177969913900108
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 492K
-rw-r--r-- 1 mcc users 6.9K Mar 8 07:15 CTLCardinality.txt
-rw-r--r-- 1 mcc users 67K Mar 8 07:15 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.2K Mar 8 07:15 CTLFireability.txt
-rw-r--r-- 1 mcc users 46K Mar 8 07:15 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Mar 3 18:30 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.4K Mar 3 18:30 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.9K Mar 16 08:06 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K Mar 16 08:06 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.7K Mar 16 08:06 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Mar 16 08:06 LTLFireability.xml
-rw-r--r-- 1 mcc users 12K Mar 8 07:15 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 116K Mar 8 07:15 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 15K Mar 8 07:15 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 110K Mar 8 07:15 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Mar 16 08:06 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Mar 16 08:06 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 10 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rwxr-xr-x 1 mcc users 11K 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 NeighborGrid-PT-d2n3m1c12-LTLFireability-00
FORMULA_NAME NeighborGrid-PT-d2n3m1c12-LTLFireability-01
FORMULA_NAME NeighborGrid-PT-d2n3m1c12-LTLFireability-02
FORMULA_NAME NeighborGrid-PT-d2n3m1c12-LTLFireability-03
FORMULA_NAME NeighborGrid-PT-d2n3m1c12-LTLFireability-04
FORMULA_NAME NeighborGrid-PT-d2n3m1c12-LTLFireability-05
FORMULA_NAME NeighborGrid-PT-d2n3m1c12-LTLFireability-06
FORMULA_NAME NeighborGrid-PT-d2n3m1c12-LTLFireability-07
FORMULA_NAME NeighborGrid-PT-d2n3m1c12-LTLFireability-08
FORMULA_NAME NeighborGrid-PT-d2n3m1c12-LTLFireability-09
FORMULA_NAME NeighborGrid-PT-d2n3m1c12-LTLFireability-10
FORMULA_NAME NeighborGrid-PT-d2n3m1c12-LTLFireability-11
FORMULA_NAME NeighborGrid-PT-d2n3m1c12-LTLFireability-12
FORMULA_NAME NeighborGrid-PT-d2n3m1c12-LTLFireability-13
FORMULA_NAME NeighborGrid-PT-d2n3m1c12-LTLFireability-14
FORMULA_NAME NeighborGrid-PT-d2n3m1c12-LTLFireability-15

=== Now, execution of the tool begins

BK_START 1779719568092

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=LTLFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=NeighborGrid-PT-d2n3m1c12
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
LTLFireability PT
Running Version 202604301425
[2026-05-25 14:32:49] [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]
[2026-05-25 14:32:49] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-25 14:32:49] [INFO ] Load time of PNML (sax parser for PT used): 31 ms
[2026-05-25 14:32:49] [INFO ] Transformed 9 places.
[2026-05-25 14:32:49] [INFO ] Transformed 40 transitions.
[2026-05-25 14:32:49] [INFO ] Parsed PT model containing 9 places and 40 transitions and 80 arcs in 115 ms.
Parsed 16 properties from file /home/mcc/execution/LTLFireability.xml in 10 ms.
Working with output stream class java.io.PrintStream
Initial state reduction rules removed 5 formulas.
FORMULA NeighborGrid-PT-d2n3m1c12-LTLFireability-02 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA NeighborGrid-PT-d2n3m1c12-LTLFireability-05 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA NeighborGrid-PT-d2n3m1c12-LTLFireability-11 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA NeighborGrid-PT-d2n3m1c12-LTLFireability-12 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA NeighborGrid-PT-d2n3m1c12-LTLFireability-14 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Support contains 9 out of 9 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 9/9 places, 40/40 transitions.
Applied a total of 0 rules in 6 ms. Remains 9 /9 variables (removed 0) and now considering 40/40 (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-14967242769214337726.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-6017979210924127043.kers'
[2026-05-25 14:32:49] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-14967242769214337726.kers, --Pflows, --basisKERS=/tmp/petrispot-output-6017979210924127043.kers]
Culled 0 columns in 0 ms.
// Phase 1: matrix 40 rows 9 cols 80 entries
Finished phase 1 with 8 SingleSign rule and 0 generalized
[2026-05-25 14:32:49] [INFO ] Computed 1 invariants in 0 ms
Computed 1 P flows in 1 ms.
Exported basis to /tmp/petrispot-output-6017979210924127043.kers
Total runtime 1 ms.
[2026-05-25 14:32:49] [INFO ] Implicit Places using invariants in 156 ms returned []
[2026-05-25 14:32:49] [INFO ] Invariant cache hit.
[2026-05-25 14:32:49] [INFO ] Implicit Places using invariants and state equation in 58 ms returned []
Implicit Place search using SMT with State Equation took 249 ms to find 0 implicit places.
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 1ms
Finished structural reductions in LTL mode , in 1 iterations and 285 ms. Remains : 9/9 places, 40/40 transitions.
Starting structural reductions in LTL mode, iteration 0 : 9/9 places, 40/40 transitions.
Applied a total of 0 rules in 0 ms. Remains 9 /9 variables (removed 0) and now considering 40/40 (removed 0) transitions.
[2026-05-25 14:32:49] [INFO ] Invariant cache hit.
[2026-05-25 14:32:49] [INFO ] Implicit Places using invariants in 22 ms returned []
[2026-05-25 14:32:49] [INFO ] Invariant cache hit.
[2026-05-25 14:32:49] [INFO ] Implicit Places using invariants and state equation in 39 ms returned []
Implicit Place search using SMT with State Equation took 62 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 62 ms. Remains : 9/9 places, 40/40 transitions.
Support contains 9 out of 9 places after structural reductions.
[2026-05-25 14:32:49] [INFO ] Flatten gal took : 16 ms
[2026-05-25 14:32:49] [INFO ] Flatten gal took : 4 ms
[2026-05-25 14:32:50] [INFO ] Input system was already deterministic with 40 transitions.
RANDOM walk for 105 steps (0 resets) in 16 ms. (6 steps per ms) remains 0/12 properties
Computed a total of 0 stabilizing places and 0 stable transitions
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202604301425/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(F((p0&&X(X(p1))))))'
Support contains 2 out of 9 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 9/9 places, 40/40 transitions.
Applied a total of 0 rules in 1 ms. Remains 9 /9 variables (removed 0) and now considering 40/40 (removed 0) transitions.
[2026-05-25 14:32:50] [INFO ] Invariant cache hit.
[2026-05-25 14:32:50] [INFO ] Implicit Places using invariants in 22 ms returned []
[2026-05-25 14:32:50] [INFO ] Invariant cache hit.
[2026-05-25 14:32:50] [INFO ] Implicit Places using invariants and state equation in 30 ms returned []
Implicit Place search using SMT with State Equation took 54 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 55 ms. Remains : 9/9 places, 40/40 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&&X(X(p1))))))'
Stuttering acceptance computed with spot in 353 ms :[(NOT p1), (NOT p1), (NOT p1), (OR (NOT p0) (NOT p1)), (OR (NOT p0) (NOT p1))]
Running random walk in product with property : NeighborGrid-PT-d2n3m1c12-LTLFireability-00
Product exploration explored 100000 steps with 4983 reset in 284 ms.
Stack based approach found an accepted trace after 23 steps with 2 reset with depth 9 and stack size 9 in 0 ms.
FORMULA NeighborGrid-PT-d2n3m1c12-LTLFireability-00 FALSE TECHNIQUES STACK_TEST
Treatment of property NeighborGrid-PT-d2n3m1c12-LTLFireability-00 finished in 774 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 1 out of 9 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 9/9 places, 40/40 transitions.
Graph (trivial) has 24 edges and 9 vertex of which 8 / 9 are part of one of the 1 SCC in 2 ms
Free SCC test removed 7 places
Ensure Unique test removed 37 transitions
Reduce isomorphic transitions removed 37 transitions.
Applied a total of 1 rules in 10 ms. Remains 2 /9 variables (removed 7) and now considering 3/40 (removed 37) transitions.
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-15304946344606866717.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-13427346444168984224.kers'
[2026-05-25 14:32:51] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-15304946344606866717.kers, --Pflows, --basisKERS=/tmp/petrispot-output-13427346444168984224.kers]
Normalized transition count is 2 out of 3 initially.
Culling duplicate invariants (modulo rational): removing 1 columns.
Culled 1 columns in 0 ms.
// Phase 1: matrix 2 rows 1 cols 2 entries
Finished phase 1 with 1 SingleSign rule and 0 generalized
[2026-05-25 14:32:51] [INFO ] Computed 1 invariants in 0 ms
Computed 1 P flows in 0 ms.
Exported basis to /tmp/petrispot-output-13427346444168984224.kers
Total runtime 0 ms.
[2026-05-25 14:32:51] [INFO ] Implicit Places using invariants in 31 ms returned []
[2026-05-25 14:32:51] [INFO ] Invariant cache hit.
[2026-05-25 14:32:51] [INFO ] Implicit Places using invariants and state equation in 18 ms returned []
Implicit Place search using SMT with State Equation took 51 ms to find 0 implicit places.
[2026-05-25 14:32:51] [INFO ] Redundant transitions in 0 ms returned []
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 0ms
Starting structural reductions in SI_LTL mode, iteration 1 : 2/9 places, 3/40 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 69 ms. Remains : 2/9 places, 3/40 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 27 ms :[(NOT p0)]
Running random walk in product with property : NeighborGrid-PT-d2n3m1c12-LTLFireability-01
Stuttering criterion allowed to conclude after 0 steps with 0 reset in 0 ms.
FORMULA NeighborGrid-PT-d2n3m1c12-LTLFireability-01 FALSE TECHNIQUES STUTTER_TEST
Treatment of property NeighborGrid-PT-d2n3m1c12-LTLFireability-01 finished in 123 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 U X(p1)) U X(X((p2||F(!p0))))))))'
Support contains 3 out of 9 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 9/9 places, 40/40 transitions.
Applied a total of 0 rules in 9 ms. Remains 9 /9 variables (removed 0) and now considering 40/40 (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-4844604368143802899.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-1962379202372893944.kers'
[2026-05-25 14:32:51] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-4844604368143802899.kers, --Pflows, --basisKERS=/tmp/petrispot-output-1962379202372893944.kers]
Culled 0 columns in 0 ms.
// Phase 1: matrix 40 rows 9 cols 80 entries
Finished phase 1 with 8 SingleSign rule and 0 generalized
[2026-05-25 14:32:51] [INFO ] Computed 1 invariants in 0 ms
Computed 1 P flows in 0 ms.
Exported basis to /tmp/petrispot-output-1962379202372893944.kers
Total runtime 0 ms.
[2026-05-25 14:32:51] [INFO ] Implicit Places using invariants in 29 ms returned []
[2026-05-25 14:32:51] [INFO ] Invariant cache hit.
[2026-05-25 14:32:51] [INFO ] Implicit Places using invariants and state equation in 74 ms returned []
Implicit Place search using SMT with State Equation took 104 ms to find 0 implicit places.
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 0ms
Finished structural reductions in LTL mode , in 1 iterations and 114 ms. Remains : 9/9 places, 40/40 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 U X(p1)) U X(X((F(!p0)||p2)))))))'
Stuttering acceptance computed with spot in 502 ms :[(AND p0 (NOT p2)), false, (AND p0 (NOT p2)), false, false, false, false, (AND p0 (NOT p2)), false, false, false, false, false]
Running random walk in product with property : NeighborGrid-PT-d2n3m1c12-LTLFireability-03
Product exploration explored 100000 steps with 32104 reset in 189 ms.
Stack based approach found an accepted trace after 3815 steps with 1209 reset with depth 5 and stack size 5 in 8 ms.
FORMULA NeighborGrid-PT-d2n3m1c12-LTLFireability-03 FALSE TECHNIQUES STACK_TEST
Treatment of property NeighborGrid-PT-d2n3m1c12-LTLFireability-03 finished in 867 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 1 out of 9 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 9/9 places, 40/40 transitions.
Graph (trivial) has 24 edges and 9 vertex of which 8 / 9 are part of one of the 1 SCC in 0 ms
Free SCC test removed 7 places
Ensure Unique test removed 37 transitions
Reduce isomorphic transitions removed 37 transitions.
Applied a total of 1 rules in 1 ms. Remains 2 /9 variables (removed 7) and now considering 3/40 (removed 37) transitions.
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-13161441307028339042.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-5607175303650699645.kers'
[2026-05-25 14:32:52] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-13161441307028339042.kers, --Pflows, --basisKERS=/tmp/petrispot-output-5607175303650699645.kers]
Normalized transition count is 2 out of 3 initially.
Culling duplicate invariants (modulo rational): removing 1 columns.
Culled 1 columns in 0 ms.
// Phase 1: matrix 2 rows 1 cols 2 entries
Finished phase 1 with 1 SingleSign rule and 0 generalized
[2026-05-25 14:32:52] [INFO ] Computed 1 invariants in 0 ms
Computed 1 P flows in 0 ms.
Exported basis to /tmp/petrispot-output-5607175303650699645.kers
Total runtime 0 ms.
[2026-05-25 14:32:52] [INFO ] Implicit Places using invariants in 17 ms returned []
[2026-05-25 14:32:52] [INFO ] Invariant cache hit.
[2026-05-25 14:32:52] [INFO ] Implicit Places using invariants and state equation in 18 ms returned []
Implicit Place search using SMT with State Equation took 37 ms to find 0 implicit places.
[2026-05-25 14:32:52] [INFO ] Redundant transitions in 0 ms returned []
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 0ms
Starting structural reductions in SI_LTL mode, iteration 1 : 2/9 places, 3/40 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 44 ms. Remains : 2/9 places, 3/40 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 42 ms :[(NOT p0)]
Running random walk in product with property : NeighborGrid-PT-d2n3m1c12-LTLFireability-04
Stuttering criterion allowed to conclude after 1 steps with 0 reset in 0 ms.
FORMULA NeighborGrid-PT-d2n3m1c12-LTLFireability-04 FALSE TECHNIQUES STUTTER_TEST
Treatment of property NeighborGrid-PT-d2n3m1c12-LTLFireability-04 finished in 118 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(F((X(p0)||G(p1))))))'
Support contains 2 out of 9 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 9/9 places, 40/40 transitions.
Applied a total of 0 rules in 0 ms. Remains 9 /9 variables (removed 0) and now considering 40/40 (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-7357896388106997924.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-7022463145528434183.kers'
[2026-05-25 14:32:52] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-7357896388106997924.kers, --Pflows, --basisKERS=/tmp/petrispot-output-7022463145528434183.kers]
Culled 0 columns in 0 ms.
// Phase 1: matrix 40 rows 9 cols 80 entries
Finished phase 1 with 8 SingleSign rule and 0 generalized
[2026-05-25 14:32:52] [INFO ] Computed 1 invariants in 0 ms
Computed 1 P flows in 0 ms.
Exported basis to /tmp/petrispot-output-7022463145528434183.kers
Total runtime 0 ms.
[2026-05-25 14:32:52] [INFO ] Implicit Places using invariants in 24 ms returned []
[2026-05-25 14:32:52] [INFO ] Invariant cache hit.
[2026-05-25 14:32:52] [INFO ] Implicit Places using invariants and state equation in 46 ms returned []
Implicit Place search using SMT with State Equation took 74 ms to find 0 implicit places.
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 0ms
Finished structural reductions in LTL mode , in 1 iterations and 74 ms. Remains : 9/9 places, 40/40 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(F((X(p0)||G(p1))))))'
Stuttering acceptance computed with spot in 188 ms :[(AND (NOT p1) (NOT p0)), (AND (NOT p1) (NOT p0)), (AND (NOT p1) (NOT p0)), (AND (NOT p1) (NOT p0))]
Running random walk in product with property : NeighborGrid-PT-d2n3m1c12-LTLFireability-06
Product exploration explored 100000 steps with 23876 reset in 150 ms.
Product exploration explored 100000 steps with 23843 reset in 192 ms.
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Knowledge based reduction with 1 factoid took 63 ms. Reduced automaton from 4 states, 5 edges and 2 AP (stutter sensitive) to 4 states, 5 edges and 2 AP (stutter sensitive).
Reduction of identical properties reduced properties to check from 4 to 3
RANDOM walk for 40010 steps (8 resets) in 241 ms. (165 steps per ms) remains 1/3 properties
BEST_FIRST walk for 40003 steps (8 resets) in 139 ms. (285 steps per ms) remains 1/1 properties
[2026-05-25 14:32:53] [INFO ] Invariant cache hit.
Problem apf3 is UNSAT
After SMT solving in domain Real declared 2/49 variables, and 0 constraints, problems are : Problem set: 1 solved, 0 unsolved in 21 ms.
Refiners :[Positive P Invariants (semi-flows): 0/1 constraints, State Equation: 0/9 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 36ms problems are : Problem set: 1 solved, 0 unsolved
Skipping Parikh replay, no witness traces provided.
Found 1 invariant AP formulas.
Property proved to be true by K+ with min(!phi)
Knowledge based reduction with 2 factoid took 11 ms. Proved property starting from automaton with 4 states, 5 edges and 2 AP (stutter sensitive
Knowledge-based reduction took 235 ms.
FORMULA NeighborGrid-PT-d2n3m1c12-LTLFireability-06 TRUE TECHNIQUES KNOWLEDGE
Treatment of property NeighborGrid-PT-d2n3m1c12-LTLFireability-06 finished in 882 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 2 out of 9 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 9/9 places, 40/40 transitions.
Graph (trivial) has 24 edges and 9 vertex of which 7 / 9 are part of one of the 1 SCC in 1 ms
Free SCC test removed 6 places
Ensure Unique test removed 35 transitions
Reduce isomorphic transitions removed 35 transitions.
Applied a total of 1 rules in 1 ms. Remains 3 /9 variables (removed 6) and now considering 5/40 (removed 35) transitions.
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-2940320664336085828.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-4425960441953552176.kers'
[2026-05-25 14:32:53] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-2940320664336085828.kers, --Pflows, --basisKERS=/tmp/petrispot-output-4425960441953552176.kers]
Normalized transition count is 4 out of 5 initially.
Culled 0 columns in 0 ms.
// Phase 1: matrix 4 rows 3 cols 8 entries
Finished phase 1 with 2 SingleSign rule and 0 generalized
[2026-05-25 14:32:53] [INFO ] Computed 1 invariants in 0 ms
Computed 1 P flows in 0 ms.
Exported basis to /tmp/petrispot-output-4425960441953552176.kers
Total runtime 0 ms.
[2026-05-25 14:32:53] [INFO ] Implicit Places using invariants in 21 ms returned []
[2026-05-25 14:32:53] [INFO ] Invariant cache hit.
[2026-05-25 14:32:53] [INFO ] Implicit Places using invariants and state equation in 22 ms returned []
Implicit Place search using SMT with State Equation took 45 ms to find 0 implicit places.
[2026-05-25 14:32:53] [INFO ] Redundant transitions in 0 ms returned []
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 0ms
Starting structural reductions in SI_LTL mode, iteration 1 : 3/9 places, 5/40 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 52 ms. Remains : 3/9 places, 5/40 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 82 ms :[(NOT p0), (NOT p0)]
Running random walk in product with property : NeighborGrid-PT-d2n3m1c12-LTLFireability-07
Stuttering criterion allowed to conclude after 0 steps with 0 reset in 0 ms.
FORMULA NeighborGrid-PT-d2n3m1c12-LTLFireability-07 FALSE TECHNIQUES STUTTER_TEST
Treatment of property NeighborGrid-PT-d2n3m1c12-LTLFireability-07 finished in 158 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 G(p0)))'
Support contains 1 out of 9 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 9/9 places, 40/40 transitions.
Graph (trivial) has 30 edges and 9 vertex of which 8 / 9 are part of one of the 1 SCC in 0 ms
Free SCC test removed 7 places
Ensure Unique test removed 37 transitions
Reduce isomorphic transitions removed 37 transitions.
Applied a total of 1 rules in 1 ms. Remains 2 /9 variables (removed 7) and now considering 3/40 (removed 37) transitions.
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-9615034136187750036.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-4221092466339773321.kers'
[2026-05-25 14:32:53] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-9615034136187750036.kers, --Pflows, --basisKERS=/tmp/petrispot-output-4221092466339773321.kers]
Normalized transition count is 2 out of 3 initially.
Culling duplicate invariants (modulo rational): removing 1 columns.
Culled 1 columns in 0 ms.
// Phase 1: matrix 2 rows 1 cols 2 entries
Finished phase 1 with 1 SingleSign rule and 0 generalized
[2026-05-25 14:32:53] [INFO ] Computed 1 invariants in 0 ms
Computed 1 P flows in 0 ms.
Exported basis to /tmp/petrispot-output-4221092466339773321.kers
Total runtime 0 ms.
[2026-05-25 14:32:53] [INFO ] Implicit Places using invariants in 16 ms returned []
[2026-05-25 14:32:53] [INFO ] Invariant cache hit.
[2026-05-25 14:32:53] [INFO ] Implicit Places using invariants and state equation in 18 ms returned []
Implicit Place search using SMT with State Equation took 37 ms to find 0 implicit places.
[2026-05-25 14:32:53] [INFO ] Redundant transitions in 0 ms returned []
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 0ms
Starting structural reductions in SI_LTL mode, iteration 1 : 2/9 places, 3/40 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 43 ms. Remains : 2/9 places, 3/40 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 G(p0)))'
Stuttering acceptance computed with spot in 89 ms :[(NOT p0), true, (NOT p0)]
Running random walk in product with property : NeighborGrid-PT-d2n3m1c12-LTLFireability-08
Stuttering criterion allowed to conclude after 0 steps with 0 reset in 0 ms.
FORMULA NeighborGrid-PT-d2n3m1c12-LTLFireability-08 FALSE TECHNIQUES STUTTER_TEST
Treatment of property NeighborGrid-PT-d2n3m1c12-LTLFireability-08 finished in 156 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)||(F(!p0)&&X(!p1))))'
Support contains 2 out of 9 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 9/9 places, 40/40 transitions.
Applied a total of 0 rules in 1 ms. Remains 9 /9 variables (removed 0) and now considering 40/40 (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-1916267024822032375.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-9136778180774267473.kers'
[2026-05-25 14:32:53] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-1916267024822032375.kers, --Pflows, --basisKERS=/tmp/petrispot-output-9136778180774267473.kers]
Culled 0 columns in 0 ms.
// Phase 1: matrix 40 rows 9 cols 80 entries
Finished phase 1 with 8 SingleSign rule and 0 generalized
[2026-05-25 14:32:53] [INFO ] Computed 1 invariants in 0 ms
Computed 1 P flows in 1 ms.
Exported basis to /tmp/petrispot-output-9136778180774267473.kers
Total runtime 1 ms.
[2026-05-25 14:32:53] [INFO ] Implicit Places using invariants in 19 ms returned []
[2026-05-25 14:32:53] [INFO ] Invariant cache hit.
[2026-05-25 14:32:53] [INFO ] Implicit Places using invariants and state equation in 27 ms returned []
Implicit Place search using SMT with State Equation took 48 ms to find 0 implicit places.
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 0ms
Finished structural reductions in LTL mode , in 1 iterations and 49 ms. Remains : 9/9 places, 40/40 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)||(F(!p0)&&X(p1))))'
Stuttering acceptance computed with spot in 187 ms :[true, (NOT p1), (AND (NOT p1) (NOT p0)), (AND (NOT p0) (NOT p1)), (NOT p0)]
Running random walk in product with property : NeighborGrid-PT-d2n3m1c12-LTLFireability-09
Entered a terminal (fully accepting) state of product in 7 steps with 3 reset in 0 ms.
FORMULA NeighborGrid-PT-d2n3m1c12-LTLFireability-09 FALSE TECHNIQUES STUTTER_TEST
Treatment of property NeighborGrid-PT-d2n3m1c12-LTLFireability-09 finished in 259 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(p1)||(!p2 U (p3||G(!p2)))))))'
Support contains 3 out of 9 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 9/9 places, 40/40 transitions.
Applied a total of 0 rules in 1 ms. Remains 9 /9 variables (removed 0) and now considering 40/40 (removed 0) transitions.
[2026-05-25 14:32:53] [INFO ] Invariant cache hit.
[2026-05-25 14:32:53] [INFO ] Implicit Places using invariants in 22 ms returned []
[2026-05-25 14:32:53] [INFO ] Invariant cache hit.
[2026-05-25 14:32:53] [INFO ] Implicit Places using invariants and state equation in 25 ms returned []
Implicit Place search using SMT with State Equation took 50 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 51 ms. Remains : 9/9 places, 40/40 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((p0||G(p1)||(!p2 U (p3||G(!p2)))))))'
Stuttering acceptance computed with spot in 283 ms :[true, (AND (NOT p3) p2), (AND (NOT p3) p2 (NOT p1)), (AND (NOT p3) p2 (NOT p1) (NOT p0)), (NOT p1), (AND (NOT p3) p2 (NOT p1) (NOT p0)), (AND (NOT p3) p2 (NOT p1) (NOT p0))]
Running random walk in product with property : NeighborGrid-PT-d2n3m1c12-LTLFireability-10
Entered a terminal (fully accepting) state of product in 120 steps with 38 reset in 1 ms.
FORMULA NeighborGrid-PT-d2n3m1c12-LTLFireability-10 FALSE TECHNIQUES STUTTER_TEST
Treatment of property NeighborGrid-PT-d2n3m1c12-LTLFireability-10 finished in 362 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(X(X((F(!p0)||G(p1))))) U (!p0 U !p2))))'
Support contains 3 out of 9 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 9/9 places, 40/40 transitions.
Applied a total of 0 rules in 1 ms. Remains 9 /9 variables (removed 0) and now considering 40/40 (removed 0) transitions.
[2026-05-25 14:32:54] [INFO ] Invariant cache hit.
[2026-05-25 14:32:54] [INFO ] Implicit Places using invariants in 18 ms returned []
[2026-05-25 14:32:54] [INFO ] Invariant cache hit.
[2026-05-25 14:32:54] [INFO ] Implicit Places using invariants and state equation in 31 ms returned []
Implicit Place search using SMT with State Equation took 52 ms to find 0 implicit places.
Skipped dead transition search.
Finished structural reductions in LTL mode , in 1 iterations and 53 ms. Remains : 9/9 places, 40/40 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(X(X((F(!p0)||G(p1))))) U (!p0 U !p2))))'
Stuttering acceptance computed with spot in 369 ms :[p2, p2, (AND p0 (NOT p1)), (AND p0 p2 (NOT p1)), (AND p0 (NOT p1)), (AND p0 (NOT p1)), p0, (AND p0 p2 (NOT p1)), (AND p0 p2 (NOT p1))]
Running random walk in product with property : NeighborGrid-PT-d2n3m1c12-LTLFireability-13
Product exploration explored 100000 steps with 39700 reset in 148 ms.
Stack based approach found an accepted trace after 1400 steps with 548 reset with depth 3 and stack size 3 in 2 ms.
FORMULA NeighborGrid-PT-d2n3m1c12-LTLFireability-13 FALSE TECHNIQUES STACK_TEST
Treatment of property NeighborGrid-PT-d2n3m1c12-LTLFireability-13 finished in 623 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))'
Support contains 1 out of 9 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 9/9 places, 40/40 transitions.
Graph (trivial) has 34 edges and 9 vertex of which 8 / 9 are part of one of the 1 SCC in 1 ms
Free SCC test removed 7 places
Ensure Unique test removed 37 transitions
Reduce isomorphic transitions removed 37 transitions.
Applied a total of 1 rules in 2 ms. Remains 2 /9 variables (removed 7) and now considering 3/40 (removed 37) transitions.
Running PetriSpot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.petrispot.binaries_1.0.0.202604301425/bin/petri64' '--loadKERS=/tmp/petrispot-input-14818961351222938909.kers' '--Pflows' '--basisKERS=/tmp/petrispot-output-14959053626084313413.kers'
[2026-05-25 14:32:54] [INFO ] Running PetriSpot with arguments : [--loadKERS=/tmp/petrispot-input-14818961351222938909.kers, --Pflows, --basisKERS=/tmp/petrispot-output-14959053626084313413.kers]
Normalized transition count is 2 out of 3 initially.
Culling duplicate invariants (modulo rational): removing 1 columns.
Culled 1 columns in 0 ms.
// Phase 1: matrix 2 rows 1 cols 2 entries
Finished phase 1 with 1 SingleSign rule and 0 generalized
[2026-05-25 14:32:54] [INFO ] Computed 1 invariants in 0 ms
Computed 1 P flows in 0 ms.
Exported basis to /tmp/petrispot-output-14959053626084313413.kers
Total runtime 0 ms.
[2026-05-25 14:32:54] [INFO ] Implicit Places using invariants in 22 ms returned []
[2026-05-25 14:32:54] [INFO ] Invariant cache hit.
[2026-05-25 14:32:54] [INFO ] Implicit Places using invariants and state equation in 24 ms returned []
Implicit Place search using SMT with State Equation took 49 ms to find 0 implicit places.
[2026-05-25 14:32:54] [INFO ] Redundant transitions in 0 ms returned []
Running 0 sub problems to find dead transitions.
Search for dead transitions found 0 dead transitions in 0ms
Starting structural reductions in SI_LTL mode, iteration 1 : 2/9 places, 3/40 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 55 ms. Remains : 2/9 places, 3/40 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))'
Stuttering acceptance computed with spot in 39 ms :[(NOT p0)]
Running random walk in product with property : NeighborGrid-PT-d2n3m1c12-LTLFireability-15
Stuttering criterion allowed to conclude after 0 steps with 0 reset in 0 ms.
FORMULA NeighborGrid-PT-d2n3m1c12-LTLFireability-15 FALSE TECHNIQUES STUTTER_TEST
Treatment of property NeighborGrid-PT-d2n3m1c12-LTLFireability-15 finished in 128 ms.
All properties solved by simple procedures.
Total runtime 5553 ms.

BK_STOP 1779719574830

--------------------
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="NeighborGrid-PT-d2n3m1c12"
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 NeighborGrid-PT-d2n3m1c12, 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-177969913900108"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/NeighborGrid-PT-d2n3m1c12.tgz
mv NeighborGrid-PT-d2n3m1c12 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 ;