Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2023-input.r073-smll-167814399500396.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2023-input.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 2-5348
Executing tool ltsminxred
Input is CloudDeployment-PT-4a, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r073-smll-167814399500396
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 612K
-rw-r--r-- 1 mcc users 7.2K Feb 25 15:01 CTLCardinality.txt
-rw-r--r-- 1 mcc users 84K Feb 25 15:01 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.3K Feb 25 14:54 CTLFireability.txt
-rw-r--r-- 1 mcc users 61K Feb 25 14:54 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:40 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.8K Jan 29 11:40 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.3K Feb 25 15:45 LTLCardinality.txt
-rw-r--r-- 1 mcc users 23K Feb 25 15:45 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.3K Feb 25 15:45 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Feb 25 15:45 LTLFireability.xml
-rw-r--r-- 1 mcc users 13K Feb 25 15:10 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 138K Feb 25 15:10 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 5.5K Feb 25 15:06 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 40K Feb 25 15:06 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Feb 25 15:45 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Feb 25 15:45 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 equiv_col
-rw-r--r-- 1 mcc users 3 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 156K Mar 5 18:22 model.pnml

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

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

The expected result is a vector of booleans
BOOL_VECTOR

here is the order used to build the result vector(from text file)
FORMULA_NAME CloudDeployment-PT-4a-LTLFireability-00
FORMULA_NAME CloudDeployment-PT-4a-LTLFireability-01
FORMULA_NAME CloudDeployment-PT-4a-LTLFireability-02
FORMULA_NAME CloudDeployment-PT-4a-LTLFireability-03
FORMULA_NAME CloudDeployment-PT-4a-LTLFireability-04
FORMULA_NAME CloudDeployment-PT-4a-LTLFireability-05
FORMULA_NAME CloudDeployment-PT-4a-LTLFireability-06
FORMULA_NAME CloudDeployment-PT-4a-LTLFireability-07
FORMULA_NAME CloudDeployment-PT-4a-LTLFireability-08
FORMULA_NAME CloudDeployment-PT-4a-LTLFireability-09
FORMULA_NAME CloudDeployment-PT-4a-LTLFireability-10
FORMULA_NAME CloudDeployment-PT-4a-LTLFireability-11
FORMULA_NAME CloudDeployment-PT-4a-LTLFireability-12
FORMULA_NAME CloudDeployment-PT-4a-LTLFireability-13
FORMULA_NAME CloudDeployment-PT-4a-LTLFireability-14
FORMULA_NAME CloudDeployment-PT-4a-LTLFireability-15

=== Now, execution of the tool begins

BK_START 1678464801757

bash -c /home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n "BK_STOP " ; date -u +%s%3N
Invoking MCC driver with
BK_TOOL=ltsminxred
BK_EXAMINATION=LTLFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=CloudDeployment-PT-4a
Applying reductions before tool ltsmin
Invoking reducer
Running Version 202303021504
[2023-03-10 16:13:24] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, LTLFireability, -timeout, 360, -rebuildPNML]
[2023-03-10 16:13:24] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-10 16:13:24] [INFO ] Load time of PNML (sax parser for PT used): 123 ms
[2023-03-10 16:13:24] [INFO ] Transformed 141 places.
[2023-03-10 16:13:24] [INFO ] Transformed 475 transitions.
[2023-03-10 16:13:24] [INFO ] Found NUPN structural information;
[2023-03-10 16:13:24] [INFO ] Parsed PT model containing 141 places and 475 transitions and 2657 arcs in 325 ms.
Parsed 16 properties from file /home/mcc/execution/LTLFireability.xml in 12 ms.
Working with output stream class java.io.PrintStream
Initial state reduction rules removed 2 formulas.
Ensure Unique test removed 52 transitions
Reduce redundant transitions removed 52 transitions.
FORMULA CloudDeployment-PT-4a-LTLFireability-04 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA CloudDeployment-PT-4a-LTLFireability-12 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Support contains 36 out of 141 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 141/141 places, 423/423 transitions.
Ensure Unique test removed 8 places
Iterating post reduction 0 with 8 rules applied. Total rules applied 8 place count 133 transition count 423
Discarding 2 places :
Symmetric choice reduction at 1 with 2 rule applications. Total rules 10 place count 131 transition count 421
Iterating global reduction 1 with 2 rules applied. Total rules applied 12 place count 131 transition count 421
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 13 place count 130 transition count 420
Iterating global reduction 1 with 1 rules applied. Total rules applied 14 place count 130 transition count 420
Drop transitions removed 38 transitions
Redundant transition composition rules discarded 38 transitions
Iterating global reduction 1 with 38 rules applied. Total rules applied 52 place count 130 transition count 382
Applied a total of 52 rules in 60 ms. Remains 130 /141 variables (removed 11) and now considering 382/423 (removed 41) transitions.
[2023-03-10 16:13:25] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
// Phase 1: matrix 223 rows 130 cols
[2023-03-10 16:13:25] [INFO ] Computed 16 place invariants in 13 ms
[2023-03-10 16:13:25] [INFO ] Implicit Places using invariants in 302 ms returned []
[2023-03-10 16:13:25] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:25] [INFO ] Invariant cache hit.
[2023-03-10 16:13:25] [INFO ] State equation strengthened by 87 read => feed constraints.
[2023-03-10 16:13:25] [INFO ] Implicit Places using invariants and state equation in 298 ms returned []
Implicit Place search using SMT with State Equation took 647 ms to find 0 implicit places.
[2023-03-10 16:13:25] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:25] [INFO ] Invariant cache hit.
[2023-03-10 16:13:26] [INFO ] Dead Transitions using invariants and state equation in 320 ms found 0 transitions.
Starting structural reductions in LTL mode, iteration 1 : 130/141 places, 382/423 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 1029 ms. Remains : 130/141 places, 382/423 transitions.
Support contains 36 out of 130 places after structural reductions.
[2023-03-10 16:13:26] [INFO ] Flatten gal took : 87 ms
[2023-03-10 16:13:26] [INFO ] Flatten gal took : 45 ms
[2023-03-10 16:13:26] [INFO ] Input system was already deterministic with 382 transitions.
Incomplete random walk after 10000 steps, including 166 resets, run finished after 694 ms. (steps per millisecond=14 ) properties (out of 28) seen :23
Incomplete Best-First random walk after 10001 steps, including 19 resets, run finished after 48 ms. (steps per millisecond=208 ) properties (out of 5) seen :3
Finished Best-First random walk after 3735 steps, including 5 resets, run visited all 2 properties in 10 ms. (steps per millisecond=373 )
FORMULA CloudDeployment-PT-4a-LTLFireability-11 FALSE TECHNIQUES REACHABILITY_KNOWLEDGE
Computed a total of 62 stabilizing places and 246 stable transitions
Graph (complete) has 1092 edges and 130 vertex of which 129 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.7 ms
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202303021504/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((G(F(p0))||G(p1)))'
Support contains 6 out of 130 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 130/130 places, 382/382 transitions.
Graph (trivial) has 154 edges and 130 vertex of which 40 / 130 are part of one of the 12 SCC in 5 ms
Free SCC test removed 28 places
Ensure Unique test removed 72 transitions
Reduce isomorphic transitions removed 72 transitions.
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 5 place count 98 transition count 286
Iterating global reduction 0 with 4 rules applied. Total rules applied 9 place count 98 transition count 286
Performed 11 Post agglomeration using F-continuation condition.Transition count delta: -22
Deduced a syphon composed of 11 places in 1 ms
Reduce places removed 11 places and 0 transitions.
Iterating global reduction 0 with 22 rules applied. Total rules applied 31 place count 87 transition count 308
Drop transitions removed 48 transitions
Redundant transition composition rules discarded 48 transitions
Iterating global reduction 0 with 48 rules applied. Total rules applied 79 place count 87 transition count 260
Applied a total of 79 rules in 86 ms. Remains 87 /130 variables (removed 43) and now considering 260/382 (removed 122) transitions.
[2023-03-10 16:13:27] [INFO ] Flow matrix only has 117 transitions (discarded 143 similar events)
// Phase 1: matrix 117 rows 87 cols
[2023-03-10 16:13:27] [INFO ] Computed 16 place invariants in 2 ms
[2023-03-10 16:13:27] [INFO ] Implicit Places using invariants in 121 ms returned []
[2023-03-10 16:13:27] [INFO ] Flow matrix only has 117 transitions (discarded 143 similar events)
[2023-03-10 16:13:27] [INFO ] Invariant cache hit.
[2023-03-10 16:13:28] [INFO ] State equation strengthened by 67 read => feed constraints.
[2023-03-10 16:13:28] [INFO ] Implicit Places using invariants and state equation in 207 ms returned []
Implicit Place search using SMT with State Equation took 331 ms to find 0 implicit places.
[2023-03-10 16:13:28] [INFO ] Redundant transitions in 259 ms returned []
[2023-03-10 16:13:28] [INFO ] Flow matrix only has 117 transitions (discarded 143 similar events)
[2023-03-10 16:13:28] [INFO ] Invariant cache hit.
[2023-03-10 16:13:28] [INFO ] Dead Transitions using invariants and state equation in 195 ms found 0 transitions.
Starting structural reductions in SI_LTL mode, iteration 1 : 87/130 places, 260/382 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 878 ms. Remains : 87/130 places, 260/382 transitions.
Stuttering acceptance computed with spot in 276 ms :[(AND (NOT p1) (NOT p0)), (NOT p0), (NOT p0)]
Running random walk in product with property : CloudDeployment-PT-4a-LTLFireability-00 automaton TGBA Formula[mat=[[{ cond=p1, acceptance={} source=0 dest: 0}, { cond=(AND (NOT p0) (NOT p1)), acceptance={} source=0 dest: 1}, { cond=(NOT p1), acceptance={} source=0 dest: 2}], [{ cond=(NOT p0), acceptance={0} source=1 dest: 1}], [{ cond=(NOT p0), acceptance={} source=2 dest: 1}, { cond=true, acceptance={} source=2 dest: 2}]], initial=0, aps=[p1:(OR (NEQ s31 1) (NEQ s32 1) (NEQ s42 1) (NEQ s76 1) (NEQ s85 1)), p0:(EQ s60 1)], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, no-univ-branch, stutter-invariant, very-weak, weak, inherently-weak], stateDesc=[null, null, null][true, true, true]]
Product exploration explored 100000 steps with 0 reset in 292 ms.
Product exploration explored 100000 steps with 0 reset in 210 ms.
Computed a total of 51 stabilizing places and 188 stable transitions
Graph (complete) has 872 edges and 87 vertex of which 86 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.3 ms
Computed a total of 51 stabilizing places and 188 stable transitions
Detected a total of 51/87 stabilizing places and 188/260 transitions leading to convergence knowledge of the form 'F(Gp|G!p)' for 2/2 atomic propositions.
Knowledge obtained : [(AND p1 (NOT p0)), (X (NOT p0)), (X (NOT (AND (NOT p0) (NOT p1)))), (X p1), true, (X (X (NOT (AND (NOT p0) (NOT p1))))), (X (X p1)), (F (OR (G p1) (G (NOT p1)))), (F (OR (G p0) (G (NOT p0))))]
False Knowledge obtained : [(X (X (NOT p0))), (X (X p0))]
Knowledge based reduction with 9 factoid took 560 ms. Reduced automaton from 3 states, 6 edges and 2 AP (stutter insensitive) to 3 states, 6 edges and 2 AP (stutter insensitive).
Stuttering acceptance computed with spot in 120 ms :[(AND (NOT p1) (NOT p0)), (NOT p0), (NOT p0)]
Finished random walk after 2630 steps, including 60 resets, run visited all 3 properties in 65 ms. (steps per millisecond=40 )
Knowledge obtained : [(AND p1 (NOT p0)), (X (NOT p0)), (X (NOT (AND (NOT p0) (NOT p1)))), (X p1), true, (X (X (NOT (AND (NOT p0) (NOT p1))))), (X (X p1)), (F (OR (G p1) (G (NOT p1)))), (F (OR (G p0) (G (NOT p0))))]
False Knowledge obtained : [(X (X (NOT p0))), (X (X p0)), (F (NOT p1)), (F p0), (F (AND (NOT p1) (NOT p0)))]
Knowledge based reduction with 9 factoid took 502 ms. Reduced automaton from 3 states, 6 edges and 2 AP (stutter insensitive) to 3 states, 6 edges and 2 AP (stutter insensitive).
Stuttering acceptance computed with spot in 125 ms :[(AND (NOT p1) (NOT p0)), (NOT p0), (NOT p0)]
Stuttering acceptance computed with spot in 118 ms :[(AND (NOT p1) (NOT p0)), (NOT p0), (NOT p0)]
Support contains 6 out of 87 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 87/87 places, 260/260 transitions.
Applied a total of 0 rules in 19 ms. Remains 87 /87 variables (removed 0) and now considering 260/260 (removed 0) transitions.
[2023-03-10 16:13:30] [INFO ] Flow matrix only has 117 transitions (discarded 143 similar events)
[2023-03-10 16:13:30] [INFO ] Invariant cache hit.
[2023-03-10 16:13:31] [INFO ] Implicit Places using invariants in 76 ms returned []
[2023-03-10 16:13:31] [INFO ] Flow matrix only has 117 transitions (discarded 143 similar events)
[2023-03-10 16:13:31] [INFO ] Invariant cache hit.
[2023-03-10 16:13:31] [INFO ] State equation strengthened by 67 read => feed constraints.
[2023-03-10 16:13:31] [INFO ] Implicit Places using invariants and state equation in 178 ms returned []
Implicit Place search using SMT with State Equation took 258 ms to find 0 implicit places.
[2023-03-10 16:13:31] [INFO ] Redundant transitions in 243 ms returned []
[2023-03-10 16:13:31] [INFO ] Flow matrix only has 117 transitions (discarded 143 similar events)
[2023-03-10 16:13:31] [INFO ] Invariant cache hit.
[2023-03-10 16:13:31] [INFO ] Dead Transitions using invariants and state equation in 203 ms found 0 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 731 ms. Remains : 87/87 places, 260/260 transitions.
Computed a total of 51 stabilizing places and 188 stable transitions
Graph (complete) has 872 edges and 87 vertex of which 86 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.3 ms
Computed a total of 51 stabilizing places and 188 stable transitions
Detected a total of 51/87 stabilizing places and 188/260 transitions leading to convergence knowledge of the form 'F(Gp|G!p)' for 2/2 atomic propositions.
Knowledge obtained : [(AND p1 (NOT p0)), (X (NOT p0)), (X (NOT (AND (NOT p1) (NOT p0)))), (X p1), true, (X (X (NOT (AND (NOT p1) (NOT p0))))), (X (X p1)), (F (OR (G p1) (G (NOT p1)))), (F (OR (G p0) (G (NOT p0))))]
False Knowledge obtained : [(X (X (NOT p0))), (X (X p0))]
Knowledge based reduction with 9 factoid took 935 ms. Reduced automaton from 3 states, 6 edges and 2 AP (stutter insensitive) to 3 states, 6 edges and 2 AP (stutter insensitive).
Stuttering acceptance computed with spot in 209 ms :[(AND (NOT p1) (NOT p0)), (NOT p0), (NOT p0)]
Finished random walk after 2213 steps, including 54 resets, run visited all 3 properties in 14 ms. (steps per millisecond=158 )
Knowledge obtained : [(AND p1 (NOT p0)), (X (NOT p0)), (X (NOT (AND (NOT p1) (NOT p0)))), (X p1), true, (X (X (NOT (AND (NOT p1) (NOT p0))))), (X (X p1)), (F (OR (G p1) (G (NOT p1)))), (F (OR (G p0) (G (NOT p0))))]
False Knowledge obtained : [(X (X (NOT p0))), (X (X p0)), (F (NOT p1)), (F p0), (F (AND (NOT p1) (NOT p0)))]
Knowledge based reduction with 9 factoid took 806 ms. Reduced automaton from 3 states, 6 edges and 2 AP (stutter insensitive) to 3 states, 6 edges and 2 AP (stutter insensitive).
Stuttering acceptance computed with spot in 146 ms :[(AND (NOT p1) (NOT p0)), (NOT p0), (NOT p0)]
Stuttering acceptance computed with spot in 148 ms :[(AND (NOT p1) (NOT p0)), (NOT p0), (NOT p0)]
Stuttering acceptance computed with spot in 136 ms :[(AND (NOT p1) (NOT p0)), (NOT p0), (NOT p0)]
Product exploration explored 100000 steps with 0 reset in 129 ms.
Product exploration explored 100000 steps with 0 reset in 271 ms.
Support contains 6 out of 87 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 87/87 places, 260/260 transitions.
Applied a total of 0 rules in 15 ms. Remains 87 /87 variables (removed 0) and now considering 260/260 (removed 0) transitions.
[2023-03-10 16:13:34] [INFO ] Flow matrix only has 117 transitions (discarded 143 similar events)
[2023-03-10 16:13:34] [INFO ] Invariant cache hit.
[2023-03-10 16:13:34] [INFO ] Implicit Places using invariants in 81 ms returned []
[2023-03-10 16:13:34] [INFO ] Flow matrix only has 117 transitions (discarded 143 similar events)
[2023-03-10 16:13:34] [INFO ] Invariant cache hit.
[2023-03-10 16:13:34] [INFO ] State equation strengthened by 67 read => feed constraints.
[2023-03-10 16:13:34] [INFO ] Implicit Places using invariants and state equation in 187 ms returned []
Implicit Place search using SMT with State Equation took 270 ms to find 0 implicit places.
[2023-03-10 16:13:35] [INFO ] Redundant transitions in 210 ms returned []
[2023-03-10 16:13:35] [INFO ] Flow matrix only has 117 transitions (discarded 143 similar events)
[2023-03-10 16:13:35] [INFO ] Invariant cache hit.
[2023-03-10 16:13:35] [INFO ] Dead Transitions using invariants and state equation in 224 ms found 0 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 727 ms. Remains : 87/87 places, 260/260 transitions.
Treatment of property CloudDeployment-PT-4a-LTLFireability-00 finished in 7692 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202303021504/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G((F(p0)&&(X(G(p1))||G(p2)))))'
Support contains 6 out of 130 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 130/130 places, 382/382 transitions.
Applied a total of 0 rules in 4 ms. Remains 130 /130 variables (removed 0) and now considering 382/382 (removed 0) transitions.
[2023-03-10 16:13:35] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
// Phase 1: matrix 223 rows 130 cols
[2023-03-10 16:13:35] [INFO ] Computed 16 place invariants in 6 ms
[2023-03-10 16:13:35] [INFO ] Implicit Places using invariants in 88 ms returned []
[2023-03-10 16:13:35] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:35] [INFO ] Invariant cache hit.
[2023-03-10 16:13:35] [INFO ] State equation strengthened by 87 read => feed constraints.
[2023-03-10 16:13:35] [INFO ] Implicit Places using invariants and state equation in 219 ms returned []
Implicit Place search using SMT with State Equation took 313 ms to find 0 implicit places.
[2023-03-10 16:13:35] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:35] [INFO ] Invariant cache hit.
[2023-03-10 16:13:35] [INFO ] Dead Transitions using invariants and state equation in 226 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 547 ms. Remains : 130/130 places, 382/382 transitions.
Stuttering acceptance computed with spot in 243 ms :[(OR (NOT p0) (AND (NOT p1) (NOT p2))), (NOT p0), (NOT p1), (AND (NOT p2) (NOT p1)), true, (AND (NOT p2) p1)]
Running random walk in product with property : CloudDeployment-PT-4a-LTLFireability-01 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 0}, { cond=(NOT p0), acceptance={} source=0 dest: 1}, { cond=(NOT p2), acceptance={} source=0 dest: 2}, { cond=p2, acceptance={} source=0 dest: 3}], [{ cond=(NOT p0), acceptance={0} source=1 dest: 1}], [{ cond=(AND p2 p1), acceptance={} source=2 dest: 2}, { cond=(NOT p1), acceptance={} source=2 dest: 4}], [{ cond=(AND (NOT p2) (NOT p1)), acceptance={} source=3 dest: 4}, { cond=(AND p2 (NOT p1)), acceptance={} source=3 dest: 5}], [{ cond=true, acceptance={0} source=4 dest: 4}], [{ cond=(AND (NOT p2) p1), acceptance={} source=5 dest: 4}, { cond=(AND p2 p1), acceptance={} source=5 dest: 5}]], initial=0, aps=[p0:(EQ s67 1), p2:(AND (EQ s1 1) (EQ s2 1) (EQ s14 1) (EQ s119 1) (EQ s128 1)), p1:(EQ s67 0)], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, no-univ-branch, stutter-sensitive, very-weak, weak, inherently-weak], stateDesc=[null, null, null, null, null, null][false, false, false, false, false, false]]
Stuttering criterion allowed to conclude after 1 steps with 0 reset in 0 ms.
FORMULA CloudDeployment-PT-4a-LTLFireability-01 FALSE TECHNIQUES STUTTER_TEST
Treatment of property CloudDeployment-PT-4a-LTLFireability-01 finished in 816 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202303021504/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(((X(G(p0))||G(p1)) U p0)))'
Support contains 6 out of 130 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 130/130 places, 382/382 transitions.
Applied a total of 0 rules in 20 ms. Remains 130 /130 variables (removed 0) and now considering 382/382 (removed 0) transitions.
[2023-03-10 16:13:36] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:36] [INFO ] Invariant cache hit.
[2023-03-10 16:13:36] [INFO ] Implicit Places using invariants in 80 ms returned []
[2023-03-10 16:13:36] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:36] [INFO ] Invariant cache hit.
[2023-03-10 16:13:36] [INFO ] State equation strengthened by 87 read => feed constraints.
[2023-03-10 16:13:36] [INFO ] Implicit Places using invariants and state equation in 229 ms returned []
Implicit Place search using SMT with State Equation took 312 ms to find 0 implicit places.
[2023-03-10 16:13:36] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:36] [INFO ] Invariant cache hit.
[2023-03-10 16:13:36] [INFO ] Dead Transitions using invariants and state equation in 284 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 619 ms. Remains : 130/130 places, 382/382 transitions.
Stuttering acceptance computed with spot in 214 ms :[(NOT p0), (NOT p0), (NOT p0), (AND (NOT p0) (NOT p1)), true, (NOT p1)]
Running random walk in product with property : CloudDeployment-PT-4a-LTLFireability-02 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 1}], [{ cond=(NOT p0), acceptance={0} source=1 dest: 1}, { cond=(AND (NOT p0) (NOT p1)), acceptance={0} source=1 dest: 2}, { cond=(AND (NOT p0) p1), acceptance={0} source=1 dest: 3}], [{ cond=p0, acceptance={} source=2 dest: 2}, { cond=(NOT p0), acceptance={} source=2 dest: 4}], [{ cond=(AND p0 (NOT p1)), acceptance={} source=3 dest: 2}, { cond=(AND p0 p1), acceptance={} source=3 dest: 3}, { cond=(AND (NOT p0) (NOT p1)), acceptance={} source=3 dest: 4}, { cond=(AND (NOT p0) p1), acceptance={} source=3 dest: 5}], [{ cond=true, acceptance={0} source=4 dest: 4}], [{ cond=(NOT p1), acceptance={} source=5 dest: 4}, { cond=p1, acceptance={} source=5 dest: 5}]], initial=0, aps=[p0:(AND (EQ s53 1) (EQ s54 1) (EQ s76 1) (EQ s119 1) (EQ s128 1)), p1:(NEQ s83 1)], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, no-univ-branch, stutter-sensitive, very-weak, weak, inherently-weak], stateDesc=[null, null, null, null, null, null][false, false, false, false, false, false]]
Stuttering criterion allowed to conclude after 1 steps with 0 reset in 0 ms.
FORMULA CloudDeployment-PT-4a-LTLFireability-02 FALSE TECHNIQUES STUTTER_TEST
Treatment of property CloudDeployment-PT-4a-LTLFireability-02 finished in 854 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202303021504/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(G(((p1||X(p2))&&p0))))'
Support contains 8 out of 130 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 130/130 places, 382/382 transitions.
Applied a total of 0 rules in 4 ms. Remains 130 /130 variables (removed 0) and now considering 382/382 (removed 0) transitions.
[2023-03-10 16:13:37] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:37] [INFO ] Invariant cache hit.
[2023-03-10 16:13:37] [INFO ] Implicit Places using invariants in 99 ms returned []
[2023-03-10 16:13:37] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:37] [INFO ] Invariant cache hit.
[2023-03-10 16:13:37] [INFO ] State equation strengthened by 87 read => feed constraints.
[2023-03-10 16:13:37] [INFO ] Implicit Places using invariants and state equation in 248 ms returned []
Implicit Place search using SMT with State Equation took 349 ms to find 0 implicit places.
[2023-03-10 16:13:37] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:37] [INFO ] Invariant cache hit.
[2023-03-10 16:13:37] [INFO ] Dead Transitions using invariants and state equation in 278 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 633 ms. Remains : 130/130 places, 382/382 transitions.
Stuttering acceptance computed with spot in 154 ms :[true, (OR (NOT p0) (AND (NOT p1) (NOT p2))), (OR (NOT p0) (AND (NOT p1) (NOT p2))), (OR (NOT p0) (NOT p2))]
Running random walk in product with property : CloudDeployment-PT-4a-LTLFireability-03 automaton TGBA Formula[mat=[[{ cond=true, acceptance={0} source=0 dest: 0}], [{ cond=true, acceptance={} source=1 dest: 2}], [{ cond=(NOT p0), acceptance={} source=2 dest: 0}, { cond=(AND p0 p1), acceptance={} source=2 dest: 2}, { cond=(AND p0 (NOT p1)), acceptance={} source=2 dest: 3}], [{ cond=(OR (NOT p0) (NOT p2)), acceptance={} source=3 dest: 0}, { cond=(AND p0 p1 p2), acceptance={} source=3 dest: 2}, { cond=(AND p0 (NOT p1) p2), acceptance={} source=3 dest: 3}]], initial=1, aps=[p0:(AND (EQ s27 1) (EQ s28 1) (EQ s50 1) (EQ s119 1) (EQ s128 1)), p1:(EQ s51 0), p2:(AND (EQ s79 1) (EQ s115 1))], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, complete, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-sensitive, terminal, weak, inherently-weak], stateDesc=[null, null, null, null][false, false, false, false]]
Entered a terminal (fully accepting) state of product in 1 steps with 0 reset in 1 ms.
FORMULA CloudDeployment-PT-4a-LTLFireability-03 FALSE TECHNIQUES STUTTER_TEST
Treatment of property CloudDeployment-PT-4a-LTLFireability-03 finished in 806 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202303021504/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(X(G((!p0&&X((!p0 U (!p1||G(!p0)))))))))'
Support contains 2 out of 130 places. Attempting structural reductions.
Property had overlarge support with respect to TGBA, discarding it for now.
Starting structural reductions in LTL mode, iteration 0 : 130/130 places, 382/382 transitions.
Applied a total of 0 rules in 4 ms. Remains 130 /130 variables (removed 0) and now considering 382/382 (removed 0) transitions.
[2023-03-10 16:13:37] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:37] [INFO ] Invariant cache hit.
[2023-03-10 16:13:37] [INFO ] Implicit Places using invariants in 100 ms returned []
[2023-03-10 16:13:37] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:37] [INFO ] Invariant cache hit.
[2023-03-10 16:13:38] [INFO ] State equation strengthened by 87 read => feed constraints.
[2023-03-10 16:13:38] [INFO ] Implicit Places using invariants and state equation in 252 ms returned []
Implicit Place search using SMT with State Equation took 359 ms to find 0 implicit places.
[2023-03-10 16:13:38] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:38] [INFO ] Invariant cache hit.
[2023-03-10 16:13:38] [INFO ] Dead Transitions using invariants and state equation in 267 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 631 ms. Remains : 130/130 places, 382/382 transitions.
Stuttering acceptance computed with spot in 128 ms :[true, p0, p0, p0]
Running random walk in product with property : CloudDeployment-PT-4a-LTLFireability-05 automaton TGBA Formula[mat=[[{ cond=true, acceptance={0} source=0 dest: 0}], [{ cond=true, acceptance={} source=1 dest: 3}], [{ cond=true, acceptance={} source=2 dest: 1}], [{ cond=p0, acceptance={} source=3 dest: 0}, { cond=(NOT p0), acceptance={} source=3 dest: 3}]], initial=2, aps=[p0:(AND (EQ s28 1) (EQ s30 1))], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, complete, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-sensitive, terminal, very-weak, weak, inherently-weak], stateDesc=[null, null, null, null][false, false, false, false]]
Product exploration explored 100000 steps with 0 reset in 132 ms.
Entered a terminal (fully accepting) state of product in 68 steps with 0 reset in 4 ms.
FORMULA CloudDeployment-PT-4a-LTLFireability-05 FALSE TECHNIQUES STUTTER_TEST
Treatment of property CloudDeployment-PT-4a-LTLFireability-05 finished in 914 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202303021504/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F(p0))'
Support contains 1 out of 130 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 130/130 places, 382/382 transitions.
Graph (trivial) has 160 edges and 130 vertex of which 40 / 130 are part of one of the 12 SCC in 1 ms
Free SCC test removed 28 places
Ensure Unique test removed 72 transitions
Reduce isomorphic transitions removed 72 transitions.
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 5 place count 98 transition count 286
Iterating global reduction 0 with 4 rules applied. Total rules applied 9 place count 98 transition count 286
Performed 12 Post agglomeration using F-continuation condition.Transition count delta: -28
Deduced a syphon composed of 12 places in 0 ms
Reduce places removed 12 places and 0 transitions.
Iterating global reduction 0 with 24 rules applied. Total rules applied 33 place count 86 transition count 314
Drop transitions removed 56 transitions
Redundant transition composition rules discarded 56 transitions
Iterating global reduction 0 with 56 rules applied. Total rules applied 89 place count 86 transition count 258
Applied a total of 89 rules in 39 ms. Remains 86 /130 variables (removed 44) and now considering 258/382 (removed 124) transitions.
[2023-03-10 16:13:38] [INFO ] Flow matrix only has 115 transitions (discarded 143 similar events)
// Phase 1: matrix 115 rows 86 cols
[2023-03-10 16:13:38] [INFO ] Computed 16 place invariants in 3 ms
[2023-03-10 16:13:38] [INFO ] Implicit Places using invariants in 83 ms returned []
[2023-03-10 16:13:38] [INFO ] Flow matrix only has 115 transitions (discarded 143 similar events)
[2023-03-10 16:13:38] [INFO ] Invariant cache hit.
[2023-03-10 16:13:38] [INFO ] State equation strengthened by 67 read => feed constraints.
[2023-03-10 16:13:39] [INFO ] Implicit Places using invariants and state equation in 185 ms returned []
Implicit Place search using SMT with State Equation took 273 ms to find 0 implicit places.
[2023-03-10 16:13:39] [INFO ] Redundant transitions in 210 ms returned []
[2023-03-10 16:13:39] [INFO ] Flow matrix only has 115 transitions (discarded 143 similar events)
[2023-03-10 16:13:39] [INFO ] Invariant cache hit.
[2023-03-10 16:13:39] [INFO ] Dead Transitions using invariants and state equation in 213 ms found 0 transitions.
Starting structural reductions in SI_LTL mode, iteration 1 : 86/130 places, 258/382 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 748 ms. Remains : 86/130 places, 258/382 transitions.
Stuttering acceptance computed with spot in 53 ms :[(NOT p0)]
Running random walk in product with property : CloudDeployment-PT-4a-LTLFireability-06 automaton TGBA Formula[mat=[[{ cond=(NOT p0), acceptance={0} source=0 dest: 0}]], initial=0, aps=[p0:(EQ s2 1)], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, colored, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-invariant, very-weak, weak, inherently-weak], stateDesc=[null][true]]
Product exploration explored 100000 steps with 50000 reset in 1317 ms.
Product exploration explored 100000 steps with 50000 reset in 1283 ms.
Computed a total of 50 stabilizing places and 186 stable transitions
Graph (complete) has 868 edges and 86 vertex of which 85 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.2 ms
Computed a total of 50 stabilizing places and 186 stable transitions
Detected a total of 50/86 stabilizing places and 186/258 transitions leading to convergence knowledge of the form 'F(Gp|G!p)' for 1/1 atomic propositions.
Knowledge obtained : [(NOT p0), (X p0), (X (X p0)), (F (OR (G p0) (G (NOT p0))))]
False Knowledge obtained : []
Property proved to be true thanks to knowledge :(X p0)
Knowledge based reduction with 4 factoid took 87 ms. Reduced automaton from 1 states, 1 edges and 1 AP (stutter insensitive) to 1 states, 0 edges and 0 AP (stutter insensitive).
FORMULA CloudDeployment-PT-4a-LTLFireability-06 TRUE TECHNIQUES KNOWLEDGE
Treatment of property CloudDeployment-PT-4a-LTLFireability-06 finished in 3511 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202303021504/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F(G(p0)))'
Support contains 6 out of 130 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 130/130 places, 382/382 transitions.
Graph (trivial) has 159 edges and 130 vertex of which 40 / 130 are part of one of the 12 SCC in 1 ms
Free SCC test removed 28 places
Ensure Unique test removed 72 transitions
Reduce isomorphic transitions removed 72 transitions.
Discarding 4 places :
Symmetric choice reduction at 0 with 4 rule applications. Total rules 5 place count 98 transition count 286
Iterating global reduction 0 with 4 rules applied. Total rules applied 9 place count 98 transition count 286
Performed 12 Post agglomeration using F-continuation condition.Transition count delta: -28
Deduced a syphon composed of 12 places in 0 ms
Reduce places removed 12 places and 0 transitions.
Iterating global reduction 0 with 24 rules applied. Total rules applied 33 place count 86 transition count 314
Drop transitions removed 56 transitions
Redundant transition composition rules discarded 56 transitions
Iterating global reduction 0 with 56 rules applied. Total rules applied 89 place count 86 transition count 258
Applied a total of 89 rules in 39 ms. Remains 86 /130 variables (removed 44) and now considering 258/382 (removed 124) transitions.
[2023-03-10 16:13:42] [INFO ] Flow matrix only has 115 transitions (discarded 143 similar events)
[2023-03-10 16:13:42] [INFO ] Invariant cache hit.
[2023-03-10 16:13:42] [INFO ] Implicit Places using invariants in 78 ms returned []
[2023-03-10 16:13:42] [INFO ] Flow matrix only has 115 transitions (discarded 143 similar events)
[2023-03-10 16:13:42] [INFO ] Invariant cache hit.
[2023-03-10 16:13:42] [INFO ] State equation strengthened by 67 read => feed constraints.
[2023-03-10 16:13:42] [INFO ] Implicit Places using invariants and state equation in 169 ms returned []
Implicit Place search using SMT with State Equation took 250 ms to find 0 implicit places.
[2023-03-10 16:13:42] [INFO ] Redundant transitions in 214 ms returned []
[2023-03-10 16:13:42] [INFO ] Flow matrix only has 115 transitions (discarded 143 similar events)
[2023-03-10 16:13:42] [INFO ] Invariant cache hit.
[2023-03-10 16:13:42] [INFO ] Dead Transitions using invariants and state equation in 176 ms found 0 transitions.
Starting structural reductions in SI_LTL mode, iteration 1 : 86/130 places, 258/382 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 689 ms. Remains : 86/130 places, 258/382 transitions.
Stuttering acceptance computed with spot in 38 ms :[(NOT p0)]
Running random walk in product with property : CloudDeployment-PT-4a-LTLFireability-07 automaton TGBA Formula[mat=[[{ cond=p0, acceptance={} source=0 dest: 0}, { cond=(NOT p0), acceptance={0} source=0 dest: 0}]], initial=0, aps=[p0:(AND (OR (EQ s0 1) (AND (EQ s32 1) (EQ s37 1)) (AND (EQ s31 1) (EQ s32 1) (EQ s45 1) (EQ s76 1))) (OR (EQ s32 0) (EQ s37 0)))], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, complete, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-invariant], stateDesc=[null][true]]
Stuttering criterion allowed to conclude after 2 steps with 0 reset in 0 ms.
FORMULA CloudDeployment-PT-4a-LTLFireability-07 FALSE TECHNIQUES STUTTER_TEST
Treatment of property CloudDeployment-PT-4a-LTLFireability-07 finished in 745 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202303021504/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X((G(p0)&&F(p1))))'
Support contains 8 out of 130 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 130/130 places, 382/382 transitions.
Applied a total of 0 rules in 3 ms. Remains 130 /130 variables (removed 0) and now considering 382/382 (removed 0) transitions.
[2023-03-10 16:13:43] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
// Phase 1: matrix 223 rows 130 cols
[2023-03-10 16:13:43] [INFO ] Computed 16 place invariants in 1 ms
[2023-03-10 16:13:43] [INFO ] Implicit Places using invariants in 88 ms returned []
[2023-03-10 16:13:43] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:43] [INFO ] Invariant cache hit.
[2023-03-10 16:13:43] [INFO ] State equation strengthened by 87 read => feed constraints.
[2023-03-10 16:13:43] [INFO ] Implicit Places using invariants and state equation in 223 ms returned []
Implicit Place search using SMT with State Equation took 316 ms to find 0 implicit places.
[2023-03-10 16:13:43] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:43] [INFO ] Invariant cache hit.
[2023-03-10 16:13:43] [INFO ] Dead Transitions using invariants and state equation in 277 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 597 ms. Remains : 130/130 places, 382/382 transitions.
Stuttering acceptance computed with spot in 141 ms :[(NOT p0), (OR (NOT p1) (NOT p0)), true, (OR (NOT p0) (NOT p1))]
Running random walk in product with property : CloudDeployment-PT-4a-LTLFireability-08 automaton TGBA Formula[mat=[[{ cond=p0, acceptance={} source=0 dest: 0}, { cond=(NOT p0), acceptance={} source=0 dest: 2}], [{ cond=true, acceptance={} source=1 dest: 3}], [{ cond=true, acceptance={0} source=2 dest: 2}], [{ cond=(AND p0 p1), acceptance={0} source=3 dest: 0}, { cond=(NOT p0), acceptance={0} source=3 dest: 2}, { cond=(AND p0 (NOT p1)), acceptance={0} source=3 dest: 3}]], initial=1, aps=[p0:(OR (EQ s53 0) (EQ s54 0) (EQ s67 0) (EQ s119 0) (EQ s128 0)), p1:(OR (EQ s28 0) (EQ s80 0) (EQ s101 1))], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, complete, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-sensitive, very-weak, weak, inherently-weak], stateDesc=[null, null, null, null][false, false, false, false]]
Stuttering criterion allowed to conclude after 1 steps with 0 reset in 1 ms.
FORMULA CloudDeployment-PT-4a-LTLFireability-08 FALSE TECHNIQUES STUTTER_TEST
Treatment of property CloudDeployment-PT-4a-LTLFireability-08 finished in 754 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202303021504/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((X(F(p0))&&F(p1)))'
Support contains 5 out of 130 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 130/130 places, 382/382 transitions.
Applied a total of 0 rules in 2 ms. Remains 130 /130 variables (removed 0) and now considering 382/382 (removed 0) transitions.
[2023-03-10 16:13:43] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:43] [INFO ] Invariant cache hit.
[2023-03-10 16:13:43] [INFO ] Implicit Places using invariants in 86 ms returned []
[2023-03-10 16:13:43] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:43] [INFO ] Invariant cache hit.
[2023-03-10 16:13:44] [INFO ] State equation strengthened by 87 read => feed constraints.
[2023-03-10 16:13:44] [INFO ] Implicit Places using invariants and state equation in 239 ms returned []
Implicit Place search using SMT with State Equation took 327 ms to find 0 implicit places.
[2023-03-10 16:13:44] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:44] [INFO ] Invariant cache hit.
[2023-03-10 16:13:44] [INFO ] Dead Transitions using invariants and state equation in 284 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 618 ms. Remains : 130/130 places, 382/382 transitions.
Stuttering acceptance computed with spot in 116 ms :[(OR (NOT p1) (NOT p0)), (NOT p0), (NOT p1)]
Running random walk in product with property : CloudDeployment-PT-4a-LTLFireability-09 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 1}, { cond=(NOT p1), acceptance={} source=0 dest: 2}], [{ cond=(NOT p0), acceptance={} source=1 dest: 1}], [{ cond=(NOT p1), acceptance={} source=2 dest: 2}]], initial=0, aps=[p1:(OR (EQ s79 0) (EQ s80 0) (EQ s104 0) (EQ s118 0)), p0:(EQ s77 0)], nbAcceptance=0, properties=[trans-labels, explicit-labels, trans-acc, no-univ-branch, stutter-sensitive, very-weak, weak, inherently-weak], stateDesc=[null, null, null][false, false, false]]
Product exploration explored 100000 steps with 50000 reset in 1507 ms.
Product exploration explored 100000 steps with 50000 reset in 1417 ms.
Computed a total of 62 stabilizing places and 246 stable transitions
Graph (complete) has 1092 edges and 130 vertex of which 129 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.4 ms
Computed a total of 62 stabilizing places and 246 stable transitions
Detected a total of 62/130 stabilizing places and 246/382 transitions leading to convergence knowledge of the form 'F(Gp|G!p)' for 1/2 atomic propositions.
Knowledge obtained : [(AND p1 p0), (X p1), (X p0), (X (X p1)), (F (OR (G p0) (G (NOT p0))))]
False Knowledge obtained : [(X (X (NOT p0))), (X (X p0))]
Property proved to be true thanks to knowledge :(X p0)
Knowledge based reduction with 5 factoid took 154 ms. Reduced automaton from 3 states, 4 edges and 2 AP (stutter sensitive) to 1 states, 0 edges and 0 AP (stutter insensitive).
FORMULA CloudDeployment-PT-4a-LTLFireability-09 TRUE TECHNIQUES KNOWLEDGE
Treatment of property CloudDeployment-PT-4a-LTLFireability-09 finished in 3834 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202303021504/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G(F((p0||G(p1)))))'
Support contains 9 out of 130 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 130/130 places, 382/382 transitions.
Graph (trivial) has 155 edges and 130 vertex of which 39 / 130 are part of one of the 12 SCC in 1 ms
Free SCC test removed 27 places
Ensure Unique test removed 66 transitions
Reduce isomorphic transitions removed 66 transitions.
Discarding 3 places :
Symmetric choice reduction at 0 with 3 rule applications. Total rules 4 place count 100 transition count 298
Iterating global reduction 0 with 3 rules applied. Total rules applied 7 place count 100 transition count 298
Performed 12 Post agglomeration using F-continuation condition.Transition count delta: -28
Deduced a syphon composed of 12 places in 0 ms
Reduce places removed 12 places and 0 transitions.
Iterating global reduction 0 with 24 rules applied. Total rules applied 31 place count 88 transition count 326
Drop transitions removed 56 transitions
Redundant transition composition rules discarded 56 transitions
Iterating global reduction 0 with 56 rules applied. Total rules applied 87 place count 88 transition count 270
Applied a total of 87 rules in 31 ms. Remains 88 /130 variables (removed 42) and now considering 270/382 (removed 112) transitions.
[2023-03-10 16:13:47] [INFO ] Flow matrix only has 118 transitions (discarded 152 similar events)
// Phase 1: matrix 118 rows 88 cols
[2023-03-10 16:13:47] [INFO ] Computed 16 place invariants in 2 ms
[2023-03-10 16:13:47] [INFO ] Implicit Places using invariants in 65 ms returned []
[2023-03-10 16:13:47] [INFO ] Flow matrix only has 118 transitions (discarded 152 similar events)
[2023-03-10 16:13:47] [INFO ] Invariant cache hit.
[2023-03-10 16:13:47] [INFO ] State equation strengthened by 67 read => feed constraints.
[2023-03-10 16:13:47] [INFO ] Implicit Places using invariants and state equation in 156 ms returned []
Implicit Place search using SMT with State Equation took 225 ms to find 0 implicit places.
[2023-03-10 16:13:48] [INFO ] Redundant transitions in 208 ms returned []
[2023-03-10 16:13:48] [INFO ] Flow matrix only has 118 transitions (discarded 152 similar events)
[2023-03-10 16:13:48] [INFO ] Invariant cache hit.
[2023-03-10 16:13:48] [INFO ] Dead Transitions using invariants and state equation in 170 ms found 0 transitions.
Starting structural reductions in SI_LTL mode, iteration 1 : 88/130 places, 270/382 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 643 ms. Remains : 88/130 places, 270/382 transitions.
Stuttering acceptance computed with spot in 76 ms :[(AND (NOT p1) (NOT p0)), (AND (NOT p1) (NOT p0))]
Running random walk in product with property : CloudDeployment-PT-4a-LTLFireability-10 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 0}, { cond=(AND (NOT p1) (NOT p0)), acceptance={} source=0 dest: 1}], [{ cond=(AND p1 (NOT p0)), acceptance={} source=1 dest: 1}, { cond=(AND (NOT p1) (NOT p0)), acceptance={0} source=1 dest: 1}]], initial=0, aps=[p1:(AND (EQ s33 1) (EQ s34 1) (EQ s47 1) (EQ s78 1)), p0:(AND (EQ s16 1) (EQ s17 1) (EQ s26 1) (EQ s77 1) (EQ s86 1))], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, no-univ-branch, stutter-invariant], stateDesc=[null, null][true, true]]
Stuttering criterion allowed to conclude after 3 steps with 0 reset in 0 ms.
FORMULA CloudDeployment-PT-4a-LTLFireability-10 FALSE TECHNIQUES STUTTER_TEST
Treatment of property CloudDeployment-PT-4a-LTLFireability-10 finished in 737 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202303021504/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(F((X((X(p1)&&p0))||G(p2)))))'
Support contains 7 out of 130 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 130/130 places, 382/382 transitions.
Applied a total of 0 rules in 4 ms. Remains 130 /130 variables (removed 0) and now considering 382/382 (removed 0) transitions.
[2023-03-10 16:13:48] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
// Phase 1: matrix 223 rows 130 cols
[2023-03-10 16:13:48] [INFO ] Computed 16 place invariants in 2 ms
[2023-03-10 16:13:48] [INFO ] Implicit Places using invariants in 76 ms returned []
[2023-03-10 16:13:48] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:48] [INFO ] Invariant cache hit.
[2023-03-10 16:13:48] [INFO ] State equation strengthened by 87 read => feed constraints.
[2023-03-10 16:13:48] [INFO ] Implicit Places using invariants and state equation in 210 ms returned []
Implicit Place search using SMT with State Equation took 290 ms to find 0 implicit places.
[2023-03-10 16:13:48] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:48] [INFO ] Invariant cache hit.
[2023-03-10 16:13:48] [INFO ] Dead Transitions using invariants and state equation in 266 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 563 ms. Remains : 130/130 places, 382/382 transitions.
Stuttering acceptance computed with spot in 200 ms :[(OR (AND (NOT p0) (NOT p2)) (AND (NOT p1) (NOT p2))), (OR (AND (NOT p0) (NOT p2)) (AND (NOT p1) (NOT p2))), (AND (NOT p1) (NOT p2)), (OR (AND (NOT p0) (NOT p2)) (AND (NOT p1) (NOT p2)))]
Running random walk in product with property : CloudDeployment-PT-4a-LTLFireability-13 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 1}], [{ cond=(AND p2 (NOT p0)), acceptance={} source=1 dest: 1}, { cond=(AND (NOT p2) (NOT p0)), acceptance={0} source=1 dest: 1}, { cond=(AND p2 p0), acceptance={} source=1 dest: 2}, { cond=(AND (NOT p2) p0), acceptance={0} source=1 dest: 2}], [{ cond=(AND p2 (NOT p0) (NOT p1)), acceptance={} source=2 dest: 1}, { cond=(AND (NOT p2) (NOT p0) (NOT p1)), acceptance={0} source=2 dest: 1}, { cond=(AND p2 p0 (NOT p1)), acceptance={} source=2 dest: 2}, { cond=(AND (NOT p2) p0 (NOT p1)), acceptance={0} source=2 dest: 2}], [{ cond=true, acceptance={} source=3 dest: 0}]], initial=3, aps=[p2:(OR (EQ s2 0) (EQ s54 0)), p0:(AND (EQ s1 1) (EQ s2 1) (EQ s6 1) (EQ s119 1) (EQ s128 1)), p1:(AND (EQ s28 1) (EQ s54 1))], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-sensitive], stateDesc=[null, null, null, null][false, false, false, false]]
Stuttering criterion allowed to conclude after 1 steps with 0 reset in 0 ms.
FORMULA CloudDeployment-PT-4a-LTLFireability-13 FALSE TECHNIQUES STUTTER_TEST
Treatment of property CloudDeployment-PT-4a-LTLFireability-13 finished in 787 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202303021504/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(G(p0)))'
Support contains 1 out of 130 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 130/130 places, 382/382 transitions.
Applied a total of 0 rules in 1 ms. Remains 130 /130 variables (removed 0) and now considering 382/382 (removed 0) transitions.
[2023-03-10 16:13:49] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:49] [INFO ] Invariant cache hit.
[2023-03-10 16:13:49] [INFO ] Implicit Places using invariants in 148 ms returned []
[2023-03-10 16:13:49] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:49] [INFO ] Invariant cache hit.
[2023-03-10 16:13:49] [INFO ] State equation strengthened by 87 read => feed constraints.
[2023-03-10 16:13:49] [INFO ] Implicit Places using invariants and state equation in 445 ms returned []
Implicit Place search using SMT with State Equation took 595 ms to find 0 implicit places.
[2023-03-10 16:13:49] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:49] [INFO ] Invariant cache hit.
[2023-03-10 16:13:49] [INFO ] Dead Transitions using invariants and state equation in 213 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 812 ms. Remains : 130/130 places, 382/382 transitions.
Stuttering acceptance computed with spot in 173 ms :[true, (NOT p0), (NOT p0)]
Running random walk in product with property : CloudDeployment-PT-4a-LTLFireability-14 automaton TGBA Formula[mat=[[{ cond=true, acceptance={0} source=0 dest: 0}], [{ cond=true, acceptance={} source=1 dest: 2}], [{ cond=(NOT p0), acceptance={} source=2 dest: 0}, { cond=p0, acceptance={} source=2 dest: 2}]], initial=1, aps=[p0:(NEQ s69 1)], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, complete, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-sensitive, terminal, very-weak, weak, inherently-weak], stateDesc=[null, null, null][false, false, false]]
Entered a terminal (fully accepting) state of product in 43 steps with 0 reset in 0 ms.
FORMULA CloudDeployment-PT-4a-LTLFireability-14 FALSE TECHNIQUES STUTTER_TEST
Treatment of property CloudDeployment-PT-4a-LTLFireability-14 finished in 1001 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202303021504/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X((p0&&G((p1&&F(p2))))))'
Support contains 10 out of 130 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 130/130 places, 382/382 transitions.
Applied a total of 0 rules in 1 ms. Remains 130 /130 variables (removed 0) and now considering 382/382 (removed 0) transitions.
[2023-03-10 16:13:50] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:50] [INFO ] Invariant cache hit.
[2023-03-10 16:13:50] [INFO ] Implicit Places using invariants in 71 ms returned []
[2023-03-10 16:13:50] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:50] [INFO ] Invariant cache hit.
[2023-03-10 16:13:50] [INFO ] State equation strengthened by 87 read => feed constraints.
[2023-03-10 16:13:50] [INFO ] Implicit Places using invariants and state equation in 376 ms returned []
Implicit Place search using SMT with State Equation took 461 ms to find 0 implicit places.
[2023-03-10 16:13:50] [INFO ] Flow matrix only has 223 transitions (discarded 159 similar events)
[2023-03-10 16:13:50] [INFO ] Invariant cache hit.
[2023-03-10 16:13:51] [INFO ] Dead Transitions using invariants and state equation in 392 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 859 ms. Remains : 130/130 places, 382/382 transitions.
Stuttering acceptance computed with spot in 206 ms :[(OR (NOT p0) (NOT p1) (NOT p2)), (OR (NOT p0) (NOT p1) (NOT p2)), true, (NOT p2), (OR (NOT p2) (NOT p1))]
Running random walk in product with property : CloudDeployment-PT-4a-LTLFireability-15 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 1}], [{ cond=(OR (NOT p0) (NOT p1)), acceptance={} source=1 dest: 2}, { cond=(AND p0 p1 (NOT p2)), acceptance={} source=1 dest: 3}, { cond=(AND p0 p1), acceptance={} source=1 dest: 4}], [{ cond=true, acceptance={0} source=2 dest: 2}], [{ cond=(NOT p2), acceptance={0} source=3 dest: 3}], [{ cond=(NOT p1), acceptance={} source=4 dest: 2}, { cond=(AND p1 (NOT p2)), acceptance={} source=4 dest: 3}, { cond=p1, acceptance={} source=4 dest: 4}]], initial=0, aps=[p0:(OR (EQ s18 1) (EQ s30 1)), p1:(OR (EQ s18 0) (EQ s27 0) (EQ s28 0) (EQ s40 0) (EQ s119 0) (EQ s128 0)), p2:(AND (EQ s1 1) (EQ s2 1) (EQ s23 1) (EQ s11...], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, no-univ-branch, stutter-sensitive, very-weak, weak, inherently-weak], stateDesc=[null, null, null, null, null][false, false, false, false, false]]
Entered a terminal (fully accepting) state of product in 1 steps with 0 reset in 0 ms.
FORMULA CloudDeployment-PT-4a-LTLFireability-15 FALSE TECHNIQUES STUTTER_TEST
Treatment of property CloudDeployment-PT-4a-LTLFireability-15 finished in 1086 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202303021504/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((G(F(p0))||G(p1)))'
[2023-03-10 16:13:51] [INFO ] Flatten gal took : 34 ms
[2023-03-10 16:13:51] [INFO ] Export to MCC of 1 properties in file /home/mcc/execution/LTLFireability.sr.xml took 3 ms.
[2023-03-10 16:13:51] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 130 places, 382 transitions and 2301 arcs took 6 ms.
Total runtime 27049 ms.
There are residual formulas that ITS could not solve within timeout
pnml2lts-mc model.pnml -s80% --procs=4 --ltl=/tmp/1120/ltl_0_ --buchi-type=spotba --strategy=ufscc --ltl-semantics=spin --state=tree
Could not compute solution for formula : CloudDeployment-PT-4a-LTLFireability-00

BK_STOP 1678464832797

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

+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
+ export PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ PYTHONPATH=/home/mcc/BenchKit/itstools/pylibs
+ export LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
+ LD_LIBRARY_PATH=/home/mcc/BenchKit/itstools/pylibs:
++ sed s/.jar//
++ ls /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202303021504.jar
++ perl -pe 's/.*\.//g'
+ VERSION=202303021504
+ echo 'Running Version 202303021504'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination LTLFireability -timeout 360 -rebuildPNML
mcc2023
ltl formula name CloudDeployment-PT-4a-LTLFireability-00
ltl formula formula --ltl=/tmp/1120/ltl_0_
pnml2lts-mc: =============================================================================
pnml2lts-mc: Runtime environment could only preallocate 15 GB while requesting 240 GB.
pnml2lts-mc: Configure your system limits to exploit all memory.
pnml2lts-mc: =============================================================================
pnml2lts-mc( 0/ 4): Loading model from model.pnml
pnml2lts-mc( 0/ 4): Edge label is id
Warning: program compiled against libxml 210 using older 209
Warning: program compiled against libxml 210 using older 209
Warning: program compiled against libxml 210 using older 209
Warning: program compiled against libxml 210 using older 209
pnml2lts-mc( 0/ 4): Petri net has 130 places, 382 transitions and 2301 arcs
pnml2lts-mc( 0/ 4): Petri net Petri analyzed
pnml2lts-mc( 0/ 4): There are no safe places
pnml2lts-mc( 0/ 4): Loading Petri net took 0.050 real 0.010 user 0.020 sys
pnml2lts-mc( 2/ 4): LTL layer: formula: /tmp/1120/ltl_0_
pnml2lts-mc( 3/ 4): LTL layer: formula: /tmp/1120/ltl_0_
pnml2lts-mc( 1/ 4): LTL layer: formula: /tmp/1120/ltl_0_
pnml2lts-mc( 0/ 4): LTL layer: formula: /tmp/1120/ltl_0_
pnml2lts-mc( 0/ 4): buchi has 3 states
pnml2lts-mc( 0/ 4): Weak Buchi automaton detected, adding non-accepting as progress label.
pnml2lts-mc( 0/ 4), ** error **: area memory exhausted
double free or corruption (fasttop)

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-4a"
export BK_EXAMINATION="LTLFireability"
export BK_TOOL="ltsminxred"
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 2-5348"
echo " Executing tool ltsminxred"
echo " Input is CloudDeployment-PT-4a, 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 r073-smll-167814399500396"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/CloudDeployment-PT-4a.tgz
mv CloudDeployment-PT-4a 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.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property LTLFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -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 ;