Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2024-input.r480-tall-171624188500076.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2024-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 2-5568
Executing tool ltsminxred
Input is CloudOpsManagement-PT-01280by00640, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r480-tall-171624188500076
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 508K
-rw-r--r-- 1 mcc users 10K May 14 13:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 97K May 14 13:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.9K May 14 13:22 CTLFireability.txt
-rw-r--r-- 1 mcc users 47K May 14 13:22 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 18 16:42 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.5K May 18 16:42 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 4.1K Apr 22 14:34 LTLCardinality.txt
-rw-r--r-- 1 mcc users 23K Apr 22 14:34 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.8K Apr 22 14:34 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Apr 22 14:34 LTLFireability.xml
-rw-r--r-- 1 mcc users 12K Apr 11 16:01 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 97K Apr 11 16:01 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 13K Apr 11 16:01 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 98K Apr 11 16:01 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 2.0K Apr 22 14:34 UpperBounds.txt
-rw-r--r-- 1 mcc users 4.0K Apr 22 14:34 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 18 16:42 equiv_col
-rw-r--r-- 1 mcc users 13 May 18 16:42 instance
-rw-r--r-- 1 mcc users 6 May 18 16:42 iscolored
-rw-r--r-- 1 mcc users 17K May 18 16:42 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 CloudOpsManagement-PT-01280by00640-LTLFireability-00
FORMULA_NAME CloudOpsManagement-PT-01280by00640-LTLFireability-01
FORMULA_NAME CloudOpsManagement-PT-01280by00640-LTLFireability-02
FORMULA_NAME CloudOpsManagement-PT-01280by00640-LTLFireability-03
FORMULA_NAME CloudOpsManagement-PT-01280by00640-LTLFireability-04
FORMULA_NAME CloudOpsManagement-PT-01280by00640-LTLFireability-05
FORMULA_NAME CloudOpsManagement-PT-01280by00640-LTLFireability-06
FORMULA_NAME CloudOpsManagement-PT-01280by00640-LTLFireability-07
FORMULA_NAME CloudOpsManagement-PT-01280by00640-LTLFireability-08
FORMULA_NAME CloudOpsManagement-PT-01280by00640-LTLFireability-09
FORMULA_NAME CloudOpsManagement-PT-01280by00640-LTLFireability-10
FORMULA_NAME CloudOpsManagement-PT-01280by00640-LTLFireability-11
FORMULA_NAME CloudOpsManagement-PT-01280by00640-LTLFireability-12
FORMULA_NAME CloudOpsManagement-PT-01280by00640-LTLFireability-13
FORMULA_NAME CloudOpsManagement-PT-01280by00640-LTLFireability-14
FORMULA_NAME CloudOpsManagement-PT-01280by00640-LTLFireability-15

=== Now, execution of the tool begins

BK_START 1717178401912

Invoking MCC driver with
BK_TOOL=ltsminxred
BK_EXAMINATION=LTLFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=CloudOpsManagement-PT-01280by00640
BK_MEMORY_CONFINEMENT=16384
Applying reductions before tool ltsmin
Invoking reducer
Running Version 202405141337
[2024-05-31 18:00:03] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, LTLFireability, -timeout, 360, -rebuildPNML]
[2024-05-31 18:00:03] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2024-05-31 18:00:03] [INFO ] Load time of PNML (sax parser for PT used): 38 ms
[2024-05-31 18:00:03] [INFO ] Transformed 27 places.
[2024-05-31 18:00:03] [INFO ] Transformed 29 transitions.
[2024-05-31 18:00:03] [INFO ] Parsed PT model containing 27 places and 29 transitions and 94 arcs in 149 ms.
Parsed 16 properties from file /home/mcc/execution/LTLFireability.xml in 14 ms.
Working with output stream class java.io.PrintStream
Initial state reduction rules removed 2 formulas.
FORMULA CloudOpsManagement-PT-01280by00640-LTLFireability-01 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA CloudOpsManagement-PT-01280by00640-LTLFireability-09 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Support contains 24 out of 27 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 27/27 places, 29/29 transitions.
Applied a total of 0 rules in 12 ms. Remains 27 /27 variables (removed 0) and now considering 29/29 (removed 0) transitions.
// Phase 1: matrix 29 rows 27 cols
[2024-05-31 18:00:03] [INFO ] Computed 11 invariants in 7 ms
[2024-05-31 18:00:04] [INFO ] Implicit Places using invariants in 234 ms returned [23]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 273 ms to find 1 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 26/27 places, 29/29 transitions.
Applied a total of 0 rules in 3 ms. Remains 26 /26 variables (removed 0) and now considering 29/29 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 305 ms. Remains : 26/27 places, 29/29 transitions.
Support contains 24 out of 26 places after structural reductions.
[2024-05-31 18:00:04] [INFO ] Flatten gal took : 18 ms
[2024-05-31 18:00:04] [INFO ] Flatten gal took : 6 ms
[2024-05-31 18:00:04] [INFO ] Input system was already deterministic with 29 transitions.
Reduction of identical properties reduced properties to check from 23 to 21
RANDOM walk for 41672 steps (8 resets) in 283 ms. (146 steps per ms) remains 4/21 properties
BEST_FIRST walk for 16277 steps (2 resets) in 69 ms. (232 steps per ms) remains 0/4 properties
FORMULA CloudOpsManagement-PT-01280by00640-LTLFireability-06 FALSE TECHNIQUES REACHABILITY_KNOWLEDGE
Computed a total of 0 stabilizing places and 0 stable transitions
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F((G(p0)||G((p0 U p1)))))'
Support contains 2 out of 26 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 26/26 places, 29/29 transitions.
Graph (trivial) has 7 edges and 26 vertex of which 6 / 26 are part of one of the 3 SCC in 3 ms
Free SCC test removed 3 places
Ensure Unique test removed 3 transitions
Reduce isomorphic transitions removed 3 transitions.
Drop transitions (Redundant composition of simpler transitions.) removed 2 transitions
Redundant transition composition rules discarded 2 transitions
Iterating global reduction 0 with 2 rules applied. Total rules applied 3 place count 23 transition count 24
Drop transitions (Trivial Post-Agglo cleanup.) removed 2 transitions
Trivial Post-agglo rules discarded 2 transitions
Performed 2 trivial Post agglomeration. Transition count delta: 2
Iterating post reduction 0 with 2 rules applied. Total rules applied 5 place count 23 transition count 22
Reduce places removed 4 places and 0 transitions.
Iterating post reduction 1 with 4 rules applied. Total rules applied 9 place count 19 transition count 22
Applied a total of 9 rules in 33 ms. Remains 19 /26 variables (removed 7) and now considering 22/29 (removed 7) transitions.
[2024-05-31 18:00:04] [INFO ] Flow matrix only has 19 transitions (discarded 3 similar events)
// Phase 1: matrix 19 rows 19 cols
[2024-05-31 18:00:04] [INFO ] Computed 8 invariants in 2 ms
[2024-05-31 18:00:04] [INFO ] Implicit Places using invariants in 62 ms returned []
[2024-05-31 18:00:04] [INFO ] Flow matrix only has 19 transitions (discarded 3 similar events)
[2024-05-31 18:00:04] [INFO ] Invariant cache hit.
[2024-05-31 18:00:05] [INFO ] State equation strengthened by 3 read => feed constraints.
[2024-05-31 18:00:05] [INFO ] Implicit Places using invariants and state equation in 66 ms returned []
Implicit Place search using SMT with State Equation took 133 ms to find 0 implicit places.
[2024-05-31 18:00:05] [INFO ] Redundant transitions in 0 ms returned []
Running 19 sub problems to find dead transitions.
[2024-05-31 18:00:05] [INFO ] Flow matrix only has 19 transitions (discarded 3 similar events)
[2024-05-31 18:00:05] [INFO ] Invariant cache hit.
[2024-05-31 18:00:05] [INFO ] State equation strengthened by 3 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 19 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 19 unsolved
At refinement iteration 2 (OVERLAPS) 3/19 variables, 7/8 constraints. Problems are: Problem set: 0 solved, 19 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/19 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 19 unsolved
At refinement iteration 4 (OVERLAPS) 18/37 variables, 19/27 constraints. Problems are: Problem set: 0 solved, 19 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/37 variables, 2/29 constraints. Problems are: Problem set: 0 solved, 19 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/37 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 19 unsolved
At refinement iteration 7 (OVERLAPS) 1/38 variables, 1/30 constraints. Problems are: Problem set: 0 solved, 19 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/38 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 19 unsolved
At refinement iteration 9 (OVERLAPS) 0/38 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 19 unsolved
No progress, stopping.
After SMT solving in domain Real declared 38/38 variables, and 30 constraints, problems are : Problem set: 0 solved, 19 unsolved in 467 ms.
Refiners :[Positive P Invariants (semi-flows): 8/8 constraints, State Equation: 19/19 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 19/19 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 19 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/16 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 19 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/16 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 19 unsolved
At refinement iteration 2 (OVERLAPS) 3/19 variables, 7/8 constraints. Problems are: Problem set: 0 solved, 19 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/19 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 19 unsolved
At refinement iteration 4 (OVERLAPS) 18/37 variables, 19/27 constraints. Problems are: Problem set: 0 solved, 19 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/37 variables, 2/29 constraints. Problems are: Problem set: 0 solved, 19 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/37 variables, 19/48 constraints. Problems are: Problem set: 0 solved, 19 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/37 variables, 0/48 constraints. Problems are: Problem set: 0 solved, 19 unsolved
At refinement iteration 8 (OVERLAPS) 1/38 variables, 1/49 constraints. Problems are: Problem set: 0 solved, 19 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/38 variables, 0/49 constraints. Problems are: Problem set: 0 solved, 19 unsolved
At refinement iteration 10 (OVERLAPS) 0/38 variables, 0/49 constraints. Problems are: Problem set: 0 solved, 19 unsolved
No progress, stopping.
After SMT solving in domain Int declared 38/38 variables, and 49 constraints, problems are : Problem set: 0 solved, 19 unsolved in 515 ms.
Refiners :[Positive P Invariants (semi-flows): 8/8 constraints, State Equation: 19/19 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 19/19 constraints, Known Traps: 0/0 constraints]
After SMT, in 1081ms problems are : Problem set: 0 solved, 19 unsolved
Search for dead transitions found 0 dead transitions in 1097ms
Starting structural reductions in SI_LTL mode, iteration 1 : 19/26 places, 22/29 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 1282 ms. Remains : 19/26 places, 22/29 transitions.
Stuttering acceptance computed with spot in 239 ms :[(AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1))]
Running random walk in product with property : CloudOpsManagement-PT-01280by00640-LTLFireability-00
Stuttering criterion allowed to conclude after 3 steps with 0 reset in 3 ms.
FORMULA CloudOpsManagement-PT-01280by00640-LTLFireability-00 FALSE TECHNIQUES STUTTER_TEST
Treatment of property CloudOpsManagement-PT-01280by00640-LTLFireability-00 finished in 1601 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G((F(X(!(p0 U p1)))||G(F(p0)))))'
Support contains 3 out of 26 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 26/26 places, 29/29 transitions.
Graph (trivial) has 9 edges and 26 vertex of which 7 / 26 are part of one of the 3 SCC in 0 ms
Free SCC test removed 4 places
Ensure Unique test removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Drop transitions (Redundant composition of simpler transitions.) removed 1 transitions
Redundant transition composition rules discarded 1 transitions
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 22 transition count 23
Drop transitions (Trivial Post-Agglo cleanup.) removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 0 with 1 rules applied. Total rules applied 3 place count 22 transition count 22
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 5 place count 20 transition count 22
Applied a total of 5 rules in 6 ms. Remains 20 /26 variables (removed 6) and now considering 22/29 (removed 7) transitions.
[2024-05-31 18:00:06] [INFO ] Flow matrix only has 19 transitions (discarded 3 similar events)
// Phase 1: matrix 19 rows 20 cols
[2024-05-31 18:00:06] [INFO ] Computed 9 invariants in 1 ms
[2024-05-31 18:00:06] [INFO ] Implicit Places using invariants in 35 ms returned [15]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 36 ms to find 1 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 19/26 places, 22/29 transitions.
Applied a total of 0 rules in 1 ms. Remains 19 /19 variables (removed 0) and now considering 22/22 (removed 0) transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 44 ms. Remains : 19/26 places, 22/29 transitions.
Stuttering acceptance computed with spot in 70 ms :[(AND (NOT p0) p1), (AND (NOT p0) p1)]
Running random walk in product with property : CloudOpsManagement-PT-01280by00640-LTLFireability-02
Stuttering criterion allowed to conclude after 19 steps with 0 reset in 1 ms.
FORMULA CloudOpsManagement-PT-01280by00640-LTLFireability-02 FALSE TECHNIQUES STUTTER_TEST
Treatment of property CloudOpsManagement-PT-01280by00640-LTLFireability-02 finished in 130 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X((X(F((p0||G(p1))))||(F(p0)&&p2))))'
Support contains 6 out of 26 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 26/26 places, 29/29 transitions.
Applied a total of 0 rules in 1 ms. Remains 26 /26 variables (removed 0) and now considering 29/29 (removed 0) transitions.
// Phase 1: matrix 29 rows 26 cols
[2024-05-31 18:00:06] [INFO ] Computed 10 invariants in 1 ms
[2024-05-31 18:00:06] [INFO ] Implicit Places using invariants in 34 ms returned [16, 19]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 35 ms to find 2 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 24/26 places, 29/29 transitions.
Applied a total of 0 rules in 0 ms. Remains 24 /24 variables (removed 0) and now considering 29/29 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 36 ms. Remains : 24/26 places, 29/29 transitions.
Stuttering acceptance computed with spot in 164 ms :[(AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1)), (AND (NOT p0) (NOT p1))]
Running random walk in product with property : CloudOpsManagement-PT-01280by00640-LTLFireability-03
Product exploration explored 100000 steps with 37500 reset in 202 ms.
Product exploration explored 100000 steps with 37509 reset in 130 ms.
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Knowledge obtained : [(AND (NOT p2) p0 p1), (X p0), (X (X (NOT (AND (NOT p0) p1)))), (X (X (NOT (AND (NOT p0) (NOT p1))))), (X (X p0))]
False Knowledge obtained : [(X p2), (X (NOT p2)), (X (OR (NOT p2) (NOT p0))), (X (NOT (OR (NOT p2) (NOT p0)))), (X (X p1)), (X (X (NOT p1)))]
Property proved to be true thanks to knowledge (Minato strategy)
Knowledge based reduction with 5 factoid took 13 ms. Reduced automaton from 3 states, 4 edges and 3 AP (stutter sensitive) to 1 states, 0 edges and 0 AP (stutter insensitive).
FORMULA CloudOpsManagement-PT-01280by00640-LTLFireability-03 TRUE TECHNIQUES KNOWLEDGE
Treatment of property CloudOpsManagement-PT-01280by00640-LTLFireability-03 finished in 579 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X((G(p0)||X(F(p1)))))'
Support contains 5 out of 26 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 26/26 places, 29/29 transitions.
Applied a total of 0 rules in 1 ms. Remains 26 /26 variables (removed 0) and now considering 29/29 (removed 0) transitions.
[2024-05-31 18:00:07] [INFO ] Invariant cache hit.
[2024-05-31 18:00:07] [INFO ] Implicit Places using invariants in 26 ms returned [16]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 28 ms to find 1 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 25/26 places, 29/29 transitions.
Applied a total of 0 rules in 1 ms. Remains 25 /25 variables (removed 0) and now considering 29/29 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 30 ms. Remains : 25/26 places, 29/29 transitions.
Stuttering acceptance computed with spot in 134 ms :[(NOT p1), (AND (NOT p1) (NOT p0)), (AND (NOT p1) (NOT p0)), (AND (NOT p1) (NOT p0))]
Running random walk in product with property : CloudOpsManagement-PT-01280by00640-LTLFireability-04
Stuttering criterion allowed to conclude after 25 steps with 0 reset in 0 ms.
FORMULA CloudOpsManagement-PT-01280by00640-LTLFireability-04 FALSE TECHNIQUES STUTTER_TEST
Treatment of property CloudOpsManagement-PT-01280by00640-LTLFireability-04 finished in 177 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((G(p0)||((p1||X(F(p2))) U p2)))'
Support contains 3 out of 26 places. Attempting structural reductions.
Property had overlarge support with respect to TGBA, discarding it for now.
Starting structural reductions in SI_LTL mode, iteration 0 : 26/26 places, 29/29 transitions.
Graph (trivial) has 5 edges and 26 vertex of which 4 / 26 are part of one of the 2 SCC in 0 ms
Free SCC test removed 2 places
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Applied a total of 1 rules in 3 ms. Remains 24 /26 variables (removed 2) and now considering 27/29 (removed 2) transitions.
[2024-05-31 18:00:07] [INFO ] Flow matrix only has 25 transitions (discarded 2 similar events)
// Phase 1: matrix 25 rows 24 cols
[2024-05-31 18:00:07] [INFO ] Computed 10 invariants in 1 ms
[2024-05-31 18:00:07] [INFO ] Implicit Places using invariants in 30 ms returned [16, 18]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 31 ms to find 2 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 22/26 places, 27/29 transitions.
Applied a total of 0 rules in 2 ms. Remains 22 /22 variables (removed 0) and now considering 27/27 (removed 0) transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 37 ms. Remains : 22/26 places, 27/29 transitions.
Stuttering acceptance computed with spot in 72 ms :[(NOT p2), (AND (NOT p2) (NOT p0))]
Running random walk in product with property : CloudOpsManagement-PT-01280by00640-LTLFireability-05
Stuttering criterion allowed to conclude after 16 steps with 0 reset in 1 ms.
FORMULA CloudOpsManagement-PT-01280by00640-LTLFireability-05 FALSE TECHNIQUES STUTTER_TEST
Treatment of property CloudOpsManagement-PT-01280by00640-LTLFireability-05 finished in 131 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(F(((p1||X(F(p2)))&&p0))))'
Support contains 8 out of 26 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 26/26 places, 29/29 transitions.
Applied a total of 0 rules in 1 ms. Remains 26 /26 variables (removed 0) and now considering 29/29 (removed 0) transitions.
// Phase 1: matrix 29 rows 26 cols
[2024-05-31 18:00:07] [INFO ] Computed 10 invariants in 0 ms
[2024-05-31 18:00:07] [INFO ] Implicit Places using invariants in 31 ms returned [16, 19]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 32 ms to find 2 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 24/26 places, 29/29 transitions.
Applied a total of 0 rules in 1 ms. Remains 24 /24 variables (removed 0) and now considering 29/29 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 34 ms. Remains : 24/26 places, 29/29 transitions.
Stuttering acceptance computed with spot in 144 ms :[(OR (NOT p0) (AND (NOT p1) (NOT p2))), (OR (NOT p0) (AND (NOT p1) (NOT p2))), (OR (AND (NOT p0) (NOT p2)) (AND (NOT p1) (NOT p2)))]
Running random walk in product with property : CloudOpsManagement-PT-01280by00640-LTLFireability-07
Stuttering criterion allowed to conclude after 12 steps with 0 reset in 0 ms.
FORMULA CloudOpsManagement-PT-01280by00640-LTLFireability-07 FALSE TECHNIQUES STUTTER_TEST
Treatment of property CloudOpsManagement-PT-01280by00640-LTLFireability-07 finished in 199 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((X(p0)&&F(p1)))'
Support contains 3 out of 26 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 26/26 places, 29/29 transitions.
Applied a total of 0 rules in 1 ms. Remains 26 /26 variables (removed 0) and now considering 29/29 (removed 0) transitions.
[2024-05-31 18:00:07] [INFO ] Invariant cache hit.
[2024-05-31 18:00:07] [INFO ] Implicit Places using invariants in 28 ms returned [19]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 30 ms to find 1 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 25/26 places, 29/29 transitions.
Applied a total of 0 rules in 1 ms. Remains 25 /25 variables (removed 0) and now considering 29/29 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 33 ms. Remains : 25/26 places, 29/29 transitions.
Stuttering acceptance computed with spot in 114 ms :[(OR (NOT p0) (NOT p1)), (NOT p0), (NOT p1), true]
Running random walk in product with property : CloudOpsManagement-PT-01280by00640-LTLFireability-08
Entered a terminal (fully accepting) state of product in 1 steps with 0 reset in 1 ms.
FORMULA CloudOpsManagement-PT-01280by00640-LTLFireability-08 FALSE TECHNIQUES STUTTER_TEST
Treatment of property CloudOpsManagement-PT-01280by00640-LTLFireability-08 finished in 173 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(G(p0)))'
Support contains 2 out of 26 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 26/26 places, 29/29 transitions.
Applied a total of 0 rules in 1 ms. Remains 26 /26 variables (removed 0) and now considering 29/29 (removed 0) transitions.
[2024-05-31 18:00:07] [INFO ] Invariant cache hit.
[2024-05-31 18:00:07] [INFO ] Implicit Places using invariants in 40 ms returned [16, 19]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 42 ms to find 2 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 24/26 places, 29/29 transitions.
Applied a total of 0 rules in 0 ms. Remains 24 /24 variables (removed 0) and now considering 29/29 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 43 ms. Remains : 24/26 places, 29/29 transitions.
Stuttering acceptance computed with spot in 92 ms :[true, (NOT p0), (NOT p0)]
Running random walk in product with property : CloudOpsManagement-PT-01280by00640-LTLFireability-10
Entered a terminal (fully accepting) state of product in 7 steps with 0 reset in 0 ms.
FORMULA CloudOpsManagement-PT-01280by00640-LTLFireability-10 FALSE TECHNIQUES STUTTER_TEST
Treatment of property CloudOpsManagement-PT-01280by00640-LTLFireability-10 finished in 156 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G(F(((!p1 U (p2||G(!p1)))||p0))))'
Support contains 3 out of 26 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 26/26 places, 29/29 transitions.
Graph (trivial) has 9 edges and 26 vertex of which 7 / 26 are part of one of the 3 SCC in 0 ms
Free SCC test removed 4 places
Ensure Unique test removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Drop transitions (Redundant composition of simpler transitions.) removed 1 transitions
Redundant transition composition rules discarded 1 transitions
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 22 transition count 23
Drop transitions (Trivial Post-Agglo cleanup.) removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 0 with 1 rules applied. Total rules applied 3 place count 22 transition count 22
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 5 place count 20 transition count 22
Applied a total of 5 rules in 10 ms. Remains 20 /26 variables (removed 6) and now considering 22/29 (removed 7) transitions.
[2024-05-31 18:00:07] [INFO ] Flow matrix only has 19 transitions (discarded 3 similar events)
// Phase 1: matrix 19 rows 20 cols
[2024-05-31 18:00:07] [INFO ] Computed 9 invariants in 1 ms
[2024-05-31 18:00:08] [INFO ] Implicit Places using invariants in 27 ms returned [15]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 28 ms to find 1 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 19/26 places, 22/29 transitions.
Graph (trivial) has 6 edges and 19 vertex of which 2 / 19 are part of one of the 1 SCC in 0 ms
Free SCC test removed 1 places
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Applied a total of 1 rules in 3 ms. Remains 18 /19 variables (removed 1) and now considering 21/22 (removed 1) transitions.
[2024-05-31 18:00:08] [INFO ] Flow matrix only has 17 transitions (discarded 4 similar events)
// Phase 1: matrix 17 rows 18 cols
[2024-05-31 18:00:08] [INFO ] Computed 8 invariants in 1 ms
[2024-05-31 18:00:08] [INFO ] Implicit Places using invariants in 34 ms returned []
[2024-05-31 18:00:08] [INFO ] Flow matrix only has 17 transitions (discarded 4 similar events)
[2024-05-31 18:00:08] [INFO ] Invariant cache hit.
[2024-05-31 18:00:08] [INFO ] State equation strengthened by 3 read => feed constraints.
[2024-05-31 18:00:08] [INFO ] Implicit Places using invariants and state equation in 40 ms returned []
Implicit Place search using SMT with State Equation took 75 ms to find 0 implicit places.
Starting structural reductions in SI_LTL mode, iteration 2 : 18/26 places, 21/29 transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 116 ms. Remains : 18/26 places, 21/29 transitions.
Stuttering acceptance computed with spot in 82 ms :[(AND (NOT p2) (NOT p0) p1), (AND (NOT p2) (NOT p0) p1)]
Running random walk in product with property : CloudOpsManagement-PT-01280by00640-LTLFireability-11
Stuttering criterion allowed to conclude after 20 steps with 0 reset in 1 ms.
FORMULA CloudOpsManagement-PT-01280by00640-LTLFireability-11 FALSE TECHNIQUES STUTTER_TEST
Treatment of property CloudOpsManagement-PT-01280by00640-LTLFireability-11 finished in 217 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F((p0 U (G(p0)||(p0&&(G((p1&&X(!p0)))||(p1&&X(!p0)&&F(p2))))))))'
Support contains 4 out of 26 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 26/26 places, 29/29 transitions.
Graph (trivial) has 9 edges and 26 vertex of which 7 / 26 are part of one of the 3 SCC in 0 ms
Free SCC test removed 4 places
Ensure Unique test removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Drop transitions (Redundant composition of simpler transitions.) removed 1 transitions
Redundant transition composition rules discarded 1 transitions
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 22 transition count 23
Drop transitions (Trivial Post-Agglo cleanup.) removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 0 with 1 rules applied. Total rules applied 3 place count 22 transition count 22
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 5 place count 20 transition count 22
Applied a total of 5 rules in 6 ms. Remains 20 /26 variables (removed 6) and now considering 22/29 (removed 7) transitions.
[2024-05-31 18:00:08] [INFO ] Flow matrix only has 19 transitions (discarded 3 similar events)
// Phase 1: matrix 19 rows 20 cols
[2024-05-31 18:00:08] [INFO ] Computed 9 invariants in 1 ms
[2024-05-31 18:00:08] [INFO ] Implicit Places using invariants in 27 ms returned [15]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 28 ms to find 1 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 19/26 places, 22/29 transitions.
Graph (trivial) has 6 edges and 19 vertex of which 2 / 19 are part of one of the 1 SCC in 0 ms
Free SCC test removed 1 places
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Applied a total of 1 rules in 2 ms. Remains 18 /19 variables (removed 1) and now considering 21/22 (removed 1) transitions.
[2024-05-31 18:00:08] [INFO ] Flow matrix only has 17 transitions (discarded 4 similar events)
// Phase 1: matrix 17 rows 18 cols
[2024-05-31 18:00:08] [INFO ] Computed 8 invariants in 0 ms
[2024-05-31 18:00:08] [INFO ] Implicit Places using invariants in 22 ms returned []
[2024-05-31 18:00:08] [INFO ] Flow matrix only has 17 transitions (discarded 4 similar events)
[2024-05-31 18:00:08] [INFO ] Invariant cache hit.
[2024-05-31 18:00:08] [INFO ] State equation strengthened by 3 read => feed constraints.
[2024-05-31 18:00:08] [INFO ] Implicit Places using invariants and state equation in 41 ms returned []
Implicit Place search using SMT with State Equation took 64 ms to find 0 implicit places.
Starting structural reductions in SI_LTL mode, iteration 2 : 18/26 places, 21/29 transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 100 ms. Remains : 18/26 places, 21/29 transitions.
Stuttering acceptance computed with spot in 229 ms :[(NOT p0), false, (AND (NOT p1) (NOT p0) (NOT p2)), (AND (NOT p0) (NOT p2)), false]
Running random walk in product with property : CloudOpsManagement-PT-01280by00640-LTLFireability-12
Stuttering criterion allowed to conclude after 1 steps with 0 reset in 0 ms.
FORMULA CloudOpsManagement-PT-01280by00640-LTLFireability-12 FALSE TECHNIQUES STUTTER_TEST
Treatment of property CloudOpsManagement-PT-01280by00640-LTLFireability-12 finished in 347 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(G(p0)))'
Support contains 1 out of 26 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 26/26 places, 29/29 transitions.
Applied a total of 0 rules in 1 ms. Remains 26 /26 variables (removed 0) and now considering 29/29 (removed 0) transitions.
// Phase 1: matrix 29 rows 26 cols
[2024-05-31 18:00:08] [INFO ] Computed 10 invariants in 1 ms
[2024-05-31 18:00:08] [INFO ] Implicit Places using invariants in 36 ms returned [16, 19]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 37 ms to find 2 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 24/26 places, 29/29 transitions.
Applied a total of 0 rules in 1 ms. Remains 24 /24 variables (removed 0) and now considering 29/29 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 39 ms. Remains : 24/26 places, 29/29 transitions.
Stuttering acceptance computed with spot in 189 ms :[true, (NOT p0), (NOT p0)]
Running random walk in product with property : CloudOpsManagement-PT-01280by00640-LTLFireability-13
Entered a terminal (fully accepting) state of product in 1 steps with 0 reset in 0 ms.
FORMULA CloudOpsManagement-PT-01280by00640-LTLFireability-13 FALSE TECHNIQUES STUTTER_TEST
Treatment of property CloudOpsManagement-PT-01280by00640-LTLFireability-13 finished in 239 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(F((X(p0)||(!p0&&F(p0))))))'
Support contains 1 out of 26 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 26/26 places, 29/29 transitions.
Applied a total of 0 rules in 1 ms. Remains 26 /26 variables (removed 0) and now considering 29/29 (removed 0) transitions.
[2024-05-31 18:00:08] [INFO ] Invariant cache hit.
[2024-05-31 18:00:08] [INFO ] Implicit Places using invariants in 43 ms returned [16, 19]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 46 ms to find 2 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 24/26 places, 29/29 transitions.
Applied a total of 0 rules in 2 ms. Remains 24 /24 variables (removed 0) and now considering 29/29 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 49 ms. Remains : 24/26 places, 29/29 transitions.
Stuttering acceptance computed with spot in 121 ms :[(NOT p0), (NOT p0), (NOT p0)]
Running random walk in product with property : CloudOpsManagement-PT-01280by00640-LTLFireability-14
Stuttering criterion allowed to conclude after 45 steps with 8 reset in 3 ms.
FORMULA CloudOpsManagement-PT-01280by00640-LTLFireability-14 FALSE TECHNIQUES STUTTER_TEST
Treatment of property CloudOpsManagement-PT-01280by00640-LTLFireability-14 finished in 186 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202405141337/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(F((p0||X((G(p0)||(p1&&X(p2))))))))'
Support contains 3 out of 26 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 26/26 places, 29/29 transitions.
Applied a total of 0 rules in 1 ms. Remains 26 /26 variables (removed 0) and now considering 29/29 (removed 0) transitions.
[2024-05-31 18:00:08] [INFO ] Invariant cache hit.
[2024-05-31 18:00:09] [INFO ] Implicit Places using invariants in 35 ms returned [16, 19]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 37 ms to find 2 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 24/26 places, 29/29 transitions.
Applied a total of 0 rules in 0 ms. Remains 24 /24 variables (removed 0) and now considering 29/29 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 38 ms. Remains : 24/26 places, 29/29 transitions.
Stuttering acceptance computed with spot in 176 ms :[(OR (AND (NOT p0) (NOT p1)) (AND (NOT p0) (NOT p2))), (AND (NOT p0) (NOT p2)), (OR (AND (NOT p0) (NOT p1)) (AND (NOT p0) (NOT p2))), (OR (AND (NOT p0) (NOT p2)) (AND (NOT p0) (NOT p1)))]
Running random walk in product with property : CloudOpsManagement-PT-01280by00640-LTLFireability-15
Stuttering criterion allowed to conclude after 15 steps with 0 reset in 0 ms.
FORMULA CloudOpsManagement-PT-01280by00640-LTLFireability-15 FALSE TECHNIQUES STUTTER_TEST
Treatment of property CloudOpsManagement-PT-01280by00640-LTLFireability-15 finished in 236 ms.
All properties solved by simple procedures.
Total runtime 5898 ms.
ITS solved all properties within timeout

BK_STOP 1717178409266

--------------------
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//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202405141337.jar
+ VERSION=202405141337
+ echo 'Running Version 202405141337'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination LTLFireability -timeout 360 -rebuildPNML

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="CloudOpsManagement-PT-01280by00640"
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 2-5568"
echo " Executing tool ltsminxred"
echo " Input is CloudOpsManagement-PT-01280by00640, 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 r480-tall-171624188500076"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/CloudOpsManagement-PT-01280by00640.tgz
mv CloudOpsManagement-PT-01280by00640 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 ;