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.r361-smll-167891810800060.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)
.....................................................................................................................................
=====================================================================
Generated by BenchKit 2-5348
Executing tool ltsminxred
Input is RobotManipulation-PT-00200, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r361-smll-167891810800060
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 408K
-rw-r--r-- 1 mcc users 6.3K Feb 26 05:33 CTLCardinality.txt
-rw-r--r-- 1 mcc users 61K Feb 26 05:33 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.7K Feb 26 05:32 CTLFireability.txt
-rw-r--r-- 1 mcc users 46K Feb 26 05:32 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:41 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.6K Jan 29 11:41 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.8K Feb 25 16:47 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K Feb 25 16:47 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.6K Feb 25 16:48 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Feb 25 16:48 LTLFireability.xml
-rw-r--r-- 1 mcc users 8.2K Feb 26 05:34 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 74K Feb 26 05:34 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 11K Feb 26 05:34 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 78K Feb 26 05:34 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Feb 25 16:48 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Feb 25 16:48 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 equiv_col
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 instance
-rw-r--r-- 1 mcc users 6 Mar 5 18:23 iscolored
-rw-r--r-- 1 mcc users 6.4K Mar 5 18:23 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 RobotManipulation-PT-00200-LTLFireability-00
FORMULA_NAME RobotManipulation-PT-00200-LTLFireability-01
FORMULA_NAME RobotManipulation-PT-00200-LTLFireability-02
FORMULA_NAME RobotManipulation-PT-00200-LTLFireability-03
FORMULA_NAME RobotManipulation-PT-00200-LTLFireability-04
FORMULA_NAME RobotManipulation-PT-00200-LTLFireability-05
FORMULA_NAME RobotManipulation-PT-00200-LTLFireability-06
FORMULA_NAME RobotManipulation-PT-00200-LTLFireability-07
FORMULA_NAME RobotManipulation-PT-00200-LTLFireability-08
FORMULA_NAME RobotManipulation-PT-00200-LTLFireability-09
FORMULA_NAME RobotManipulation-PT-00200-LTLFireability-10
FORMULA_NAME RobotManipulation-PT-00200-LTLFireability-11
FORMULA_NAME RobotManipulation-PT-00200-LTLFireability-12
FORMULA_NAME RobotManipulation-PT-00200-LTLFireability-13
FORMULA_NAME RobotManipulation-PT-00200-LTLFireability-14
FORMULA_NAME RobotManipulation-PT-00200-LTLFireability-15

=== Now, execution of the tool begins

BK_START 1678995711302

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=RobotManipulation-PT-00200
Applying reductions before tool ltsmin
Invoking reducer
Running Version 202303021504
[2023-03-16 19:41:53] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, LTLFireability, -timeout, 360, -rebuildPNML]
[2023-03-16 19:41:53] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-16 19:41:53] [INFO ] Load time of PNML (sax parser for PT used): 35 ms
[2023-03-16 19:41:53] [INFO ] Transformed 15 places.
[2023-03-16 19:41:53] [INFO ] Transformed 11 transitions.
[2023-03-16 19:41:53] [INFO ] Parsed PT model containing 15 places and 11 transitions and 34 arcs in 125 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 3 formulas.
FORMULA RobotManipulation-PT-00200-LTLFireability-01 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA RobotManipulation-PT-00200-LTLFireability-06 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA RobotManipulation-PT-00200-LTLFireability-14 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Support contains 15 out of 15 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Applied a total of 0 rules in 12 ms. Remains 15 /15 variables (removed 0) and now considering 11/11 (removed 0) transitions.
// Phase 1: matrix 11 rows 15 cols
[2023-03-16 19:41:54] [INFO ] Computed 6 place invariants in 4 ms
[2023-03-16 19:41:54] [INFO ] Implicit Places using invariants in 144 ms returned []
[2023-03-16 19:41:54] [INFO ] Invariant cache hit.
[2023-03-16 19:41:54] [INFO ] Implicit Places using invariants and state equation in 48 ms returned []
Implicit Place search using SMT with State Equation took 248 ms to find 0 implicit places.
[2023-03-16 19:41:54] [INFO ] Invariant cache hit.
[2023-03-16 19:41:54] [INFO ] Dead Transitions using invariants and state equation in 53 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 317 ms. Remains : 15/15 places, 11/11 transitions.
Support contains 15 out of 15 places after structural reductions.
[2023-03-16 19:41:54] [INFO ] Flatten gal took : 20 ms
[2023-03-16 19:41:54] [INFO ] Flatten gal took : 5 ms
[2023-03-16 19:41:54] [INFO ] Input system was already deterministic with 11 transitions.
Finished random walk after 4816 steps, including 1 resets, run visited all 14 properties in 115 ms. (steps per millisecond=41 )
FORMULA RobotManipulation-PT-00200-LTLFireability-02 FALSE TECHNIQUES REACHABILITY_KNOWLEDGE
FORMULA RobotManipulation-PT-00200-LTLFireability-00 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_1.0.0.202303021504/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F((p0||G((F(p1) U X(p2))))))'
Support contains 5 out of 15 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 1 places :
Implicit places reduction removed 1 places
Drop transitions removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 0 with 2 rules applied. Total rules applied 2 place count 14 transition count 10
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 1 with 1 rules applied. Total rules applied 3 place count 13 transition count 10
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 1 Pre rules applied. Total rules applied 3 place count 13 transition count 9
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 2 with 2 rules applied. Total rules applied 5 place count 12 transition count 9
Applied a total of 5 rules in 11 ms. Remains 12 /15 variables (removed 3) and now considering 9/11 (removed 2) transitions.
// Phase 1: matrix 9 rows 12 cols
[2023-03-16 19:41:55] [INFO ] Computed 5 place invariants in 1 ms
[2023-03-16 19:41:55] [INFO ] Implicit Places using invariants in 40 ms returned [5]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 42 ms to find 1 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 11/15 places, 9/11 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 11 transition count 8
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 1 with 1 rules applied. Total rules applied 2 place count 10 transition count 8
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 2 with 2 rules applied. Total rules applied 4 place count 9 transition count 7
Applied a total of 4 rules in 2 ms. Remains 9 /11 variables (removed 2) and now considering 7/9 (removed 2) transitions.
// Phase 1: matrix 7 rows 9 cols
[2023-03-16 19:41:55] [INFO ] Computed 4 place invariants in 1 ms
[2023-03-16 19:41:55] [INFO ] Implicit Places using invariants in 29 ms returned []
[2023-03-16 19:41:55] [INFO ] Invariant cache hit.
[2023-03-16 19:41:55] [INFO ] Implicit Places using invariants and state equation in 37 ms returned []
Implicit Place search using SMT with State Equation took 69 ms to find 0 implicit places.
Starting structural reductions in SI_LTL mode, iteration 2 : 9/15 places, 7/11 transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 125 ms. Remains : 9/15 places, 7/11 transitions.
Stuttering acceptance computed with spot in 341 ms :[(AND (NOT p0) (NOT p2)), (AND (NOT p0) (NOT p1) (NOT p2)), (AND (NOT p0) (NOT p2)), false]
Running random walk in product with property : RobotManipulation-PT-00200-LTLFireability-03 automaton TGBA Formula[mat=[[{ cond=(NOT p0), acceptance={} source=0 dest: 0}, { cond=(AND (NOT p0) (NOT p1)), acceptance={} source=0 dest: 1}, { cond=(NOT p0), acceptance={} source=0 dest: 2}], [{ cond=(AND (NOT p0) (NOT p1) (NOT p2)), acceptance={0} source=1 dest: 1}, { cond=(AND (NOT p0) (NOT p1) (NOT p2)), acceptance={} source=1 dest: 3}], [{ cond=(AND (NOT p0) (NOT p1) (NOT p2)), acceptance={} source=2 dest: 1}, { cond=(AND (NOT p0) (NOT p2)), acceptance={0} source=2 dest: 2}], [{ cond=(AND (NOT p0) (NOT p1) p2), acceptance={0} source=3 dest: 1}, { cond=(AND (NOT p0) (NOT p1) p2), acceptance={} source=3 dest: 3}]], initial=0, aps=[p0:(AND (GEQ s3 1) (GEQ s5 1)), p1:(AND (GEQ s7 1) (GEQ s8 1)), p2:(GEQ s4 1)], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, no-univ-branch, stutter-invariant], stateDesc=[null, null, null, null][true, true, true, true]]
Product exploration explored 100000 steps with 23234 reset in 362 ms.
Product exploration explored 100000 steps with 23175 reset in 220 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 p0) (NOT p1) (NOT p2)), (X (AND (NOT p0) (NOT p1))), (X (NOT p0)), (X (AND (NOT p0) (NOT p1) (NOT p2))), (X (AND (NOT p0) (NOT p2))), (X (X (NOT (AND (NOT p0) (NOT p1) p2)))), (X (X (NOT p0))), (X (X (AND (NOT p0) (NOT p2))))]
False Knowledge obtained : [(X (X (AND (NOT p0) (NOT p1)))), (X (X (NOT (AND (NOT p0) (NOT p1))))), (X (X (AND (NOT p0) (NOT p1) (NOT p2)))), (X (X (NOT (AND (NOT p0) (NOT p1) (NOT p2)))))]
Knowledge based reduction with 8 factoid took 489 ms. Reduced automaton from 4 states, 9 edges and 3 AP (stutter insensitive) to 4 states, 9 edges and 3 AP (stutter insensitive).
Stuttering acceptance computed with spot in 180 ms :[(AND (NOT p0) (NOT p2)), (AND (NOT p0) (NOT p1) (NOT p2)), (AND (NOT p0) (NOT p2)), false]
Finished random walk after 3219 steps, including 0 resets, run visited all 5 properties in 6 ms. (steps per millisecond=536 )
Knowledge obtained : [(AND (NOT p0) (NOT p1) (NOT p2)), (X (AND (NOT p0) (NOT p1))), (X (NOT p0)), (X (AND (NOT p0) (NOT p1) (NOT p2))), (X (AND (NOT p0) (NOT p2))), (X (X (NOT (AND (NOT p0) (NOT p1) p2)))), (X (X (NOT p0))), (X (X (AND (NOT p0) (NOT p2))))]
False Knowledge obtained : [(X (X (AND (NOT p0) (NOT p1)))), (X (X (NOT (AND (NOT p0) (NOT p1))))), (X (X (AND (NOT p0) (NOT p1) (NOT p2)))), (X (X (NOT (AND (NOT p0) (NOT p1) (NOT p2))))), (F (AND (NOT p1) (NOT p0) p2)), (F (NOT (AND (NOT p0) (NOT p2)))), (F p0), (F (NOT (AND (NOT p1) (NOT p0) (NOT p2)))), (F (NOT (AND (NOT p1) (NOT p0))))]
Knowledge based reduction with 8 factoid took 585 ms. Reduced automaton from 4 states, 9 edges and 3 AP (stutter insensitive) to 4 states, 9 edges and 3 AP (stutter insensitive).
Stuttering acceptance computed with spot in 170 ms :[(AND (NOT p0) (NOT p2)), (AND (NOT p0) (NOT p1) (NOT p2)), (AND (NOT p0) (NOT p2)), false]
Stuttering acceptance computed with spot in 172 ms :[(AND (NOT p0) (NOT p2)), (AND (NOT p0) (NOT p1) (NOT p2)), (AND (NOT p0) (NOT p2)), false]
[2023-03-16 19:41:57] [INFO ] Invariant cache hit.
[2023-03-16 19:41:57] [INFO ] [Real]Absence check using 4 positive place invariants in 3 ms returned sat
[2023-03-16 19:41:57] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-16 19:41:57] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2023-03-16 19:41:57] [INFO ] Computed and/alt/rep : 6/9/6 causal constraints (skipped 0 transitions) in 2 ms.
[2023-03-16 19:41:57] [INFO ] Solution in real domain found non-integer solution.
[2023-03-16 19:41:58] [INFO ] [Nat]Absence check using 4 positive place invariants in 2 ms returned sat
[2023-03-16 19:41:58] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-16 19:41:58] [INFO ] [Nat]Absence check using state equation in 10 ms returned sat
[2023-03-16 19:41:58] [INFO ] Computed and/alt/rep : 6/9/6 causal constraints (skipped 0 transitions) in 1 ms.
[2023-03-16 19:41:58] [INFO ] Added : 5 causal constraints over 2 iterations in 24 ms. Result :sat
Could not prove EG (AND (NOT p0) (NOT p2))
Support contains 5 out of 9 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 9/9 places, 7/7 transitions.
Applied a total of 0 rules in 1 ms. Remains 9 /9 variables (removed 0) and now considering 7/7 (removed 0) transitions.
[2023-03-16 19:41:58] [INFO ] Invariant cache hit.
[2023-03-16 19:41:58] [INFO ] Implicit Places using invariants in 26 ms returned []
[2023-03-16 19:41:58] [INFO ] Invariant cache hit.
[2023-03-16 19:41:58] [INFO ] Implicit Places using invariants and state equation in 31 ms returned []
Implicit Place search using SMT with State Equation took 60 ms to find 0 implicit places.
[2023-03-16 19:41:58] [INFO ] Redundant transitions in 0 ms returned []
[2023-03-16 19:41:58] [INFO ] Invariant cache hit.
[2023-03-16 19:41:58] [INFO ] Dead Transitions using invariants and state equation in 29 ms found 0 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 99 ms. Remains : 9/9 places, 7/7 transitions.
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 p0) (NOT p1) (NOT p2)), (X (AND (NOT p1) (NOT p0))), (X (NOT p0)), (X (AND (NOT p1) (NOT p0) (NOT p2))), (X (AND (NOT p0) (NOT p2))), (X (X (NOT (AND (NOT p1) (NOT p0) p2)))), (X (X (NOT p0))), (X (X (AND (NOT p0) (NOT p2))))]
False Knowledge obtained : [(X (X (AND (NOT p1) (NOT p0)))), (X (X (NOT (AND (NOT p1) (NOT p0))))), (X (X (AND (NOT p1) (NOT p0) (NOT p2)))), (X (X (NOT (AND (NOT p1) (NOT p0) (NOT p2)))))]
Knowledge based reduction with 8 factoid took 449 ms. Reduced automaton from 4 states, 9 edges and 3 AP (stutter insensitive) to 4 states, 9 edges and 3 AP (stutter insensitive).
Stuttering acceptance computed with spot in 165 ms :[(AND (NOT p0) (NOT p2)), (AND (NOT p0) (NOT p1) (NOT p2)), (AND (NOT p0) (NOT p2)), false]
Finished random walk after 5217 steps, including 1 resets, run visited all 5 properties in 5 ms. (steps per millisecond=1043 )
Knowledge obtained : [(AND (NOT p0) (NOT p1) (NOT p2)), (X (AND (NOT p1) (NOT p0))), (X (NOT p0)), (X (AND (NOT p1) (NOT p0) (NOT p2))), (X (AND (NOT p0) (NOT p2))), (X (X (NOT (AND (NOT p1) (NOT p0) p2)))), (X (X (NOT p0))), (X (X (AND (NOT p0) (NOT p2))))]
False Knowledge obtained : [(X (X (AND (NOT p1) (NOT p0)))), (X (X (NOT (AND (NOT p1) (NOT p0))))), (X (X (AND (NOT p1) (NOT p0) (NOT p2)))), (X (X (NOT (AND (NOT p1) (NOT p0) (NOT p2))))), (F (AND (NOT p1) (NOT p0) p2)), (F (NOT (AND (NOT p0) (NOT p2)))), (F p0), (F (NOT (AND (NOT p1) (NOT p0) (NOT p2)))), (F (NOT (AND (NOT p1) (NOT p0))))]
Knowledge based reduction with 8 factoid took 570 ms. Reduced automaton from 4 states, 9 edges and 3 AP (stutter insensitive) to 4 states, 9 edges and 3 AP (stutter insensitive).
Stuttering acceptance computed with spot in 163 ms :[(AND (NOT p0) (NOT p2)), (AND (NOT p0) (NOT p1) (NOT p2)), (AND (NOT p0) (NOT p2)), false]
Stuttering acceptance computed with spot in 162 ms :[(AND (NOT p0) (NOT p2)), (AND (NOT p0) (NOT p1) (NOT p2)), (AND (NOT p0) (NOT p2)), false]
[2023-03-16 19:41:59] [INFO ] Invariant cache hit.
[2023-03-16 19:41:59] [INFO ] [Real]Absence check using 4 positive place invariants in 2 ms returned sat
[2023-03-16 19:41:59] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2023-03-16 19:41:59] [INFO ] [Real]Absence check using state equation in 7 ms returned sat
[2023-03-16 19:41:59] [INFO ] Computed and/alt/rep : 6/9/6 causal constraints (skipped 0 transitions) in 3 ms.
[2023-03-16 19:41:59] [INFO ] Solution in real domain found non-integer solution.
[2023-03-16 19:41:59] [INFO ] [Nat]Absence check using 4 positive place invariants in 2 ms returned sat
[2023-03-16 19:41:59] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2023-03-16 19:41:59] [INFO ] [Nat]Absence check using state equation in 8 ms returned sat
[2023-03-16 19:41:59] [INFO ] Computed and/alt/rep : 6/9/6 causal constraints (skipped 0 transitions) in 3 ms.
[2023-03-16 19:41:59] [INFO ] Added : 5 causal constraints over 2 iterations in 13 ms. Result :sat
Could not prove EG (AND (NOT p0) (NOT p2))
Stuttering acceptance computed with spot in 262 ms :[(AND (NOT p0) (NOT p2)), (AND (NOT p0) (NOT p1) (NOT p2)), (AND (NOT p0) (NOT p2)), false]
Product exploration explored 100000 steps with 23069 reset in 183 ms.
Product exploration explored 100000 steps with 23162 reset in 159 ms.
Support contains 5 out of 9 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 9/9 places, 7/7 transitions.
Applied a total of 0 rules in 1 ms. Remains 9 /9 variables (removed 0) and now considering 7/7 (removed 0) transitions.
[2023-03-16 19:42:00] [INFO ] Invariant cache hit.
[2023-03-16 19:42:00] [INFO ] Implicit Places using invariants in 26 ms returned []
[2023-03-16 19:42:00] [INFO ] Invariant cache hit.
[2023-03-16 19:42:00] [INFO ] Implicit Places using invariants and state equation in 30 ms returned []
Implicit Place search using SMT with State Equation took 68 ms to find 0 implicit places.
[2023-03-16 19:42:00] [INFO ] Redundant transitions in 0 ms returned []
[2023-03-16 19:42:00] [INFO ] Invariant cache hit.
[2023-03-16 19:42:00] [INFO ] Dead Transitions using invariants and state equation in 47 ms found 0 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 122 ms. Remains : 9/9 places, 7/7 transitions.
Treatment of property RobotManipulation-PT-00200-LTLFireability-03 finished in 5470 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 2 out of 15 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 2 places :
Implicit places reduction removed 2 places
Iterating post reduction 0 with 2 rules applied. Total rules applied 2 place count 13 transition count 11
Applied a total of 2 rules in 0 ms. Remains 13 /15 variables (removed 2) and now considering 11/11 (removed 0) transitions.
// Phase 1: matrix 11 rows 13 cols
[2023-03-16 19:42:00] [INFO ] Computed 4 place invariants in 1 ms
[2023-03-16 19:42:00] [INFO ] Implicit Places using invariants in 34 ms returned [5, 10]
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 : 11/15 places, 11/11 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 10 transition count 10
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 10 transition count 10
Applied a total of 2 rules in 2 ms. Remains 10 /11 variables (removed 1) and now considering 10/11 (removed 1) transitions.
// Phase 1: matrix 10 rows 10 cols
[2023-03-16 19:42:00] [INFO ] Computed 2 place invariants in 2 ms
[2023-03-16 19:42:00] [INFO ] Implicit Places using invariants in 31 ms returned []
[2023-03-16 19:42:00] [INFO ] Invariant cache hit.
[2023-03-16 19:42:00] [INFO ] Implicit Places using invariants and state equation in 29 ms returned []
Implicit Place search using SMT with State Equation took 62 ms to find 0 implicit places.
Starting structural reductions in LTL mode, iteration 2 : 10/15 places, 10/11 transitions.
Finished structural reductions in LTL mode , in 2 iterations and 100 ms. Remains : 10/15 places, 10/11 transitions.
Stuttering acceptance computed with spot in 130 ms :[(OR (NOT p0) p1), (OR (NOT p0) p1), true, p1]
Running random walk in product with property : RobotManipulation-PT-00200-LTLFireability-04 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 1}], [{ cond=p0, acceptance={} source=1 dest: 1}, { cond=(NOT p0), acceptance={} source=1 dest: 2}, { cond=(AND p0 p1), acceptance={} source=1 dest: 3}], [{ cond=true, acceptance={0} source=2 dest: 2}], [{ cond=p1, acceptance={0} source=3 dest: 3}]], initial=0, aps=[p0:(GEQ s6 1), p1:(GEQ s7 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][false, false, false, false]]
Entered a terminal (fully accepting) state of product in 1 steps with 0 reset in 0 ms.
FORMULA RobotManipulation-PT-00200-LTLFireability-04 FALSE TECHNIQUES STUTTER_TEST
Treatment of property RobotManipulation-PT-00200-LTLFireability-04 finished in 263 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))||(G(p1)&&F((p0||G(!p1))))))'
Support contains 4 out of 15 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 1 places :
Implicit places reduction removed 1 places
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 14 transition count 11
Applied a total of 1 rules in 1 ms. Remains 14 /15 variables (removed 1) and now considering 11/11 (removed 0) transitions.
// Phase 1: matrix 11 rows 14 cols
[2023-03-16 19:42:00] [INFO ] Computed 5 place invariants in 1 ms
[2023-03-16 19:42:00] [INFO ] Implicit Places using invariants in 35 ms returned [5, 11]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 52 ms to find 2 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 12/15 places, 11/11 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 11 transition count 10
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 11 transition count 10
Applied a total of 2 rules in 2 ms. Remains 11 /12 variables (removed 1) and now considering 10/11 (removed 1) transitions.
// Phase 1: matrix 10 rows 11 cols
[2023-03-16 19:42:00] [INFO ] Computed 3 place invariants in 0 ms
[2023-03-16 19:42:00] [INFO ] Implicit Places using invariants in 24 ms returned []
[2023-03-16 19:42:00] [INFO ] Invariant cache hit.
[2023-03-16 19:42:01] [INFO ] Implicit Places using invariants and state equation in 33 ms returned []
Implicit Place search using SMT with State Equation took 70 ms to find 0 implicit places.
Starting structural reductions in LTL mode, iteration 2 : 11/15 places, 10/11 transitions.
Finished structural reductions in LTL mode , in 2 iterations and 127 ms. Remains : 11/15 places, 10/11 transitions.
Stuttering acceptance computed with spot in 202 ms :[(NOT p0), (NOT p0), (AND (NOT p0) (NOT p1)), (AND p1 (NOT p0)), true, (NOT p1)]
Running random walk in product with property : RobotManipulation-PT-00200-LTLFireability-05 automaton TGBA Formula[mat=[[{ cond=(NOT p1), acceptance={} source=0 dest: 1}, { cond=p1, acceptance={} source=0 dest: 2}, { cond=(AND p1 (NOT p0)), acceptance={} source=0 dest: 3}], [{ cond=p0, acceptance={} source=1 dest: 1}, { cond=(NOT p0), acceptance={} source=1 dest: 4}], [{ cond=(AND (NOT p1) p0), acceptance={} source=2 dest: 1}, { cond=(AND p1 p0), acceptance={} source=2 dest: 2}, { cond=(AND (NOT p1) (NOT p0)), acceptance={} source=2 dest: 4}, { cond=(AND p1 (NOT p0)), acceptance={} source=2 dest: 5}], [{ cond=(AND (NOT p1) (NOT p0)), acceptance={} source=3 dest: 3}, { cond=(AND p1 (NOT p0)), acceptance={0} source=3 dest: 3}], [{ 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=[p1:(AND (GEQ s0 1) (GEQ s4 1)), p0:(AND (GEQ s2 1) (GEQ s8 1))], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, no-univ-branch, stutter-sensitive], stateDesc=[null, null, null, null, null, null][false, false, false, false, false, false]]
Entered a terminal (fully accepting) state of product in 1 steps with 0 reset in 1 ms.
FORMULA RobotManipulation-PT-00200-LTLFireability-05 FALSE TECHNIQUES STUTTER_TEST
Treatment of property RobotManipulation-PT-00200-LTLFireability-05 finished in 356 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)||G(p1))))'
Support contains 3 out of 15 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 2 places :
Implicit places reduction removed 2 places
Drop transitions removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 0 with 3 rules applied. Total rules applied 3 place count 13 transition count 10
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 1 with 1 rules applied. Total rules applied 4 place count 12 transition count 10
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 1 Pre rules applied. Total rules applied 4 place count 12 transition count 9
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 2 with 2 rules applied. Total rules applied 6 place count 11 transition count 9
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 2 with 4 rules applied. Total rules applied 10 place count 9 transition count 7
Applied a total of 10 rules in 6 ms. Remains 9 /15 variables (removed 6) and now considering 7/11 (removed 4) transitions.
// Phase 1: matrix 7 rows 9 cols
[2023-03-16 19:42:01] [INFO ] Computed 4 place invariants in 1 ms
[2023-03-16 19:42:01] [INFO ] Implicit Places using invariants in 31 ms returned [7, 8]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 36 ms to find 2 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 7/15 places, 7/11 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 6 transition count 6
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 6 transition count 6
Partial Post-agglomeration rule applied 1 times.
Drop transitions removed 1 transitions
Iterating global reduction 0 with 1 rules applied. Total rules applied 3 place count 6 transition count 6
Applied a total of 3 rules in 3 ms. Remains 6 /7 variables (removed 1) and now considering 6/7 (removed 1) transitions.
// Phase 1: matrix 6 rows 6 cols
[2023-03-16 19:42:01] [INFO ] Computed 2 place invariants in 0 ms
[2023-03-16 19:42:01] [INFO ] Implicit Places using invariants in 20 ms returned []
[2023-03-16 19:42:01] [INFO ] Invariant cache hit.
[2023-03-16 19:42:01] [INFO ] Implicit Places using invariants and state equation in 32 ms returned []
Implicit Place search using SMT with State Equation took 57 ms to find 0 implicit places.
Starting structural reductions in SI_LTL mode, iteration 2 : 6/15 places, 6/11 transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 108 ms. Remains : 6/15 places, 6/11 transitions.
Stuttering acceptance computed with spot in 37 ms :[(AND (NOT p0) (NOT p1))]
Running random walk in product with property : RobotManipulation-PT-00200-LTLFireability-07 automaton TGBA Formula[mat=[[{ cond=(AND p0 p1), acceptance={} source=0 dest: 0}, { cond=(AND (NOT p0) p1), acceptance={0} source=0 dest: 0}, { cond=(AND p0 (NOT p1)), acceptance={1} source=0 dest: 0}, { cond=(AND (NOT p0) (NOT p1)), acceptance={0, 1} source=0 dest: 0}]], initial=0, aps=[p0:(OR (LT s1 1) (LT s3 1)), p1:(OR (LT s0 1) (LT s3 1))], nbAcceptance=2, properties=[trans-labels, explicit-labels, trans-acc, complete, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-invariant], stateDesc=[null][true]]
Product exploration explored 100000 steps with 0 reset in 193 ms.
Stack based approach found an accepted trace after 11 steps with 0 reset with depth 12 and stack size 12 in 0 ms.
FORMULA RobotManipulation-PT-00200-LTLFireability-07 FALSE TECHNIQUES STACK_TEST
Treatment of property RobotManipulation-PT-00200-LTLFireability-07 finished in 355 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)&&F(G(p1)))))'
Support contains 2 out of 15 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 2 places :
Implicit places reduction removed 2 places
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 0 with 3 rules applied. Total rules applied 3 place count 13 transition count 10
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 1 with 1 rules applied. Total rules applied 4 place count 12 transition count 10
Performed 2 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 2 Pre rules applied. Total rules applied 4 place count 12 transition count 8
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 2 with 4 rules applied. Total rules applied 8 place count 10 transition count 8
Applied a total of 8 rules in 4 ms. Remains 10 /15 variables (removed 5) and now considering 8/11 (removed 3) transitions.
// Phase 1: matrix 8 rows 10 cols
[2023-03-16 19:42:01] [INFO ] Computed 4 place invariants in 3 ms
[2023-03-16 19:42:01] [INFO ] Implicit Places using invariants in 34 ms returned [4, 7, 8]
Discarding 3 places :
Implicit Place search using SMT only with invariants took 45 ms to find 3 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 7/15 places, 8/11 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 7 transition count 7
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 1 with 1 rules applied. Total rules applied 2 place count 6 transition count 7
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 1 Pre rules applied. Total rules applied 2 place count 6 transition count 6
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 2 with 2 rules applied. Total rules applied 4 place count 5 transition count 6
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 5 place count 4 transition count 5
Iterating global reduction 2 with 1 rules applied. Total rules applied 6 place count 4 transition count 5
Applied a total of 6 rules in 11 ms. Remains 4 /7 variables (removed 3) and now considering 5/8 (removed 3) transitions.
// Phase 1: matrix 5 rows 4 cols
[2023-03-16 19:42:01] [INFO ] Computed 1 place invariants in 0 ms
[2023-03-16 19:42:01] [INFO ] Implicit Places using invariants in 22 ms returned []
[2023-03-16 19:42:01] [INFO ] Invariant cache hit.
[2023-03-16 19:42:01] [INFO ] Implicit Places using invariants and state equation in 26 ms returned []
Implicit Place search using SMT with State Equation took 60 ms to find 0 implicit places.
Starting structural reductions in SI_LTL mode, iteration 2 : 4/15 places, 5/11 transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 121 ms. Remains : 4/15 places, 5/11 transitions.
Stuttering acceptance computed with spot in 115 ms :[(OR (NOT p0) (NOT p1)), (NOT p0), (NOT p1)]
Running random walk in product with property : RobotManipulation-PT-00200-LTLFireability-08 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 0}, { cond=(NOT p0), acceptance={} source=0 dest: 1}, { cond=(NOT p1), acceptance={} source=0 dest: 2}], [{ cond=(NOT p0), acceptance={0} source=1 dest: 1}], [{ cond=p1, acceptance={} source=2 dest: 2}, { cond=(NOT p1), acceptance={0} source=2 dest: 2}]], initial=0, aps=[p0:(GEQ s2 1), p1:(GEQ s3 1)], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, no-univ-branch, stutter-invariant], stateDesc=[null, null, null][true, true, true]]
Product exploration explored 100000 steps with 1 reset in 65 ms.
Stack based approach found an accepted trace after 12 steps with 0 reset with depth 13 and stack size 13 in 0 ms.
FORMULA RobotManipulation-PT-00200-LTLFireability-08 FALSE TECHNIQUES STACK_TEST
Treatment of property RobotManipulation-PT-00200-LTLFireability-08 finished in 318 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||G(p1))))'
Support contains 3 out of 15 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 2 places :
Implicit places reduction removed 2 places
Drop transitions removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 0 with 3 rules applied. Total rules applied 3 place count 13 transition count 10
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 1 with 1 rules applied. Total rules applied 4 place count 12 transition count 10
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 1 Pre rules applied. Total rules applied 4 place count 12 transition count 9
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 2 with 2 rules applied. Total rules applied 6 place count 11 transition count 9
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 2 with 4 rules applied. Total rules applied 10 place count 9 transition count 7
Applied a total of 10 rules in 7 ms. Remains 9 /15 variables (removed 6) and now considering 7/11 (removed 4) transitions.
// Phase 1: matrix 7 rows 9 cols
[2023-03-16 19:42:01] [INFO ] Computed 4 place invariants in 1 ms
[2023-03-16 19:42:01] [INFO ] Implicit Places using invariants in 30 ms returned [7, 8]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 41 ms to find 2 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 7/15 places, 7/11 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 6 transition count 6
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 6 transition count 6
Partial Post-agglomeration rule applied 1 times.
Drop transitions removed 1 transitions
Iterating global reduction 0 with 1 rules applied. Total rules applied 3 place count 6 transition count 6
Applied a total of 3 rules in 3 ms. Remains 6 /7 variables (removed 1) and now considering 6/7 (removed 1) transitions.
// Phase 1: matrix 6 rows 6 cols
[2023-03-16 19:42:01] [INFO ] Computed 2 place invariants in 7 ms
[2023-03-16 19:42:01] [INFO ] Implicit Places using invariants in 27 ms returned []
[2023-03-16 19:42:01] [INFO ] Invariant cache hit.
[2023-03-16 19:42:02] [INFO ] Implicit Places using invariants and state equation in 26 ms returned []
Implicit Place search using SMT with State Equation took 55 ms to find 0 implicit places.
Starting structural reductions in SI_LTL mode, iteration 2 : 6/15 places, 6/11 transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 106 ms. Remains : 6/15 places, 6/11 transitions.
Stuttering acceptance computed with spot in 37 ms :[(AND (NOT p1) p0)]
Running random walk in product with property : RobotManipulation-PT-00200-LTLFireability-09 automaton TGBA Formula[mat=[[{ cond=(AND p1 p0), acceptance={} source=0 dest: 0}, { cond=(AND (NOT p1) p0), acceptance={0} source=0 dest: 0}]], initial=0, aps=[p1:(OR (LT s0 1) (LT s3 1)), p0:(OR (LT s1 1) (LT s3 1))], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-invariant], stateDesc=[null][true]]
Product exploration explored 100000 steps with 13554 reset in 79 ms.
Stack based approach found an accepted trace after 29 steps with 4 reset with depth 6 and stack size 6 in 1 ms.
FORMULA RobotManipulation-PT-00200-LTLFireability-09 FALSE TECHNIQUES STACK_TEST
Treatment of property RobotManipulation-PT-00200-LTLFireability-09 finished in 238 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||X((p1||G((!p0||X(!p2))))))))'
Support contains 5 out of 15 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 1 places :
Implicit places reduction removed 1 places
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 14 transition count 11
Applied a total of 1 rules in 2 ms. Remains 14 /15 variables (removed 1) and now considering 11/11 (removed 0) transitions.
// Phase 1: matrix 11 rows 14 cols
[2023-03-16 19:42:02] [INFO ] Computed 5 place invariants in 7 ms
[2023-03-16 19:42:02] [INFO ] Implicit Places using invariants in 37 ms returned [10]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 38 ms to find 1 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 13/15 places, 11/11 transitions.
Applied a total of 0 rules in 0 ms. Remains 13 /13 variables (removed 0) and now considering 11/11 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 42 ms. Remains : 13/15 places, 11/11 transitions.
Stuttering acceptance computed with spot in 120 ms :[(AND p0 (NOT p1) p2), (AND p0 (NOT p1) p2), (AND p0 (NOT p1) p2)]
Running random walk in product with property : RobotManipulation-PT-00200-LTLFireability-10 automaton TGBA Formula[mat=[[{ cond=p0, acceptance={} source=0 dest: 1}], [{ cond=(AND p0 (NOT p1)), acceptance={} source=1 dest: 1}, { cond=(AND p0 (NOT p1)), acceptance={0} source=1 dest: 2}], [{ cond=(AND p0 (NOT p1) p2), acceptance={} source=2 dest: 1}, { cond=(AND p0 (NOT p1) p2), acceptance={0} source=2 dest: 2}]], initial=0, aps=[p0:(OR (LT s1 1) (LT s5 1)), p1:(GEQ s10 1), p2:(AND (GEQ s11 1) (GEQ s12 1))], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, no-univ-branch, stutter-sensitive], stateDesc=[null, null, null][false, false, false]]
Product exploration explored 100000 steps with 50000 reset in 67 ms.
Product exploration explored 100000 steps with 50000 reset in 68 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 p0 p1 (NOT p2)), (X (NOT (AND p0 (NOT p1)))), (X (X (NOT (AND p0 (NOT p1) p2)))), (X (X (NOT (AND p0 (NOT p1)))))]
False Knowledge obtained : []
Property proved to be true thanks to knowledge :(X (NOT (AND p0 (NOT p1))))
Knowledge based reduction with 4 factoid took 78 ms. Reduced automaton from 3 states, 5 edges and 3 AP (stutter sensitive) to 1 states, 0 edges and 0 AP (stutter insensitive).
FORMULA RobotManipulation-PT-00200-LTLFireability-10 TRUE TECHNIQUES KNOWLEDGE
Treatment of property RobotManipulation-PT-00200-LTLFireability-10 finished in 396 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(!p0)||X(X(X(X(F((X(p2)&&p1))))))))'
Support contains 6 out of 15 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 1 places :
Implicit places reduction removed 1 places
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 14 transition count 11
Applied a total of 1 rules in 1 ms. Remains 14 /15 variables (removed 1) and now considering 11/11 (removed 0) transitions.
[2023-03-16 19:42:02] [INFO ] Invariant cache hit.
[2023-03-16 19:42:02] [INFO ] Implicit Places using invariants in 30 ms returned []
[2023-03-16 19:42:02] [INFO ] Invariant cache hit.
[2023-03-16 19:42:02] [INFO ] Implicit Places using invariants and state equation in 46 ms returned []
Implicit Place search using SMT with State Equation took 93 ms to find 0 implicit places.
[2023-03-16 19:42:02] [INFO ] Invariant cache hit.
[2023-03-16 19:42:02] [INFO ] Dead Transitions using invariants and state equation in 32 ms found 0 transitions.
Starting structural reductions in LTL mode, iteration 1 : 14/15 places, 11/11 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 144 ms. Remains : 14/15 places, 11/11 transitions.
Stuttering acceptance computed with spot in 447 ms :[(NOT p2), (OR (AND p0 (NOT p1)) (AND p0 (NOT p2))), (AND p0 (NOT p2)), (OR (NOT p1) (NOT p2)), (OR (AND p0 (NOT p1)) (AND p0 (NOT p2))), (OR (NOT p1) (NOT p2)), (OR (AND p0 (NOT p1)) (AND p0 (NOT p2))), (OR (NOT p2) (NOT p1)), (OR (NOT p2) (NOT p1)), (OR (AND p0 (NOT p1)) (AND p0 (NOT p2))), (OR (AND p0 (NOT p1)) (AND p0 (NOT p2)))]
Running random walk in product with property : RobotManipulation-PT-00200-LTLFireability-11 automaton TGBA Formula[mat=[[{ cond=(AND p1 (NOT p2)), acceptance={0} source=0 dest: 0}, { cond=(AND (NOT p1) (NOT p2)), acceptance={0} source=0 dest: 3}], [{ cond=(AND p0 p1), acceptance={} source=1 dest: 0}, { cond=(AND (NOT p0) (NOT p1)), acceptance={} source=1 dest: 1}, { cond=(AND (NOT p0) p1), acceptance={} source=1 dest: 2}, { cond=(AND p0 (NOT p1)), acceptance={} source=1 dest: 3}], [{ cond=(AND p0 p1 (NOT p2)), acceptance={} source=2 dest: 0}, { cond=(AND (NOT p0) (NOT p1) (NOT p2)), acceptance={} source=2 dest: 1}, { cond=(AND (NOT p0) p1 (NOT p2)), acceptance={} source=2 dest: 2}, { cond=(AND p0 (NOT p1) (NOT p2)), acceptance={} source=2 dest: 3}], [{ cond=p1, acceptance={0} source=3 dest: 0}, { cond=(NOT p1), acceptance={0} source=3 dest: 3}], [{ cond=(NOT p0), acceptance={} source=4 dest: 1}, { cond=p0, acceptance={} source=4 dest: 3}], [{ cond=true, acceptance={} source=5 dest: 3}], [{ cond=(NOT p0), acceptance={} source=6 dest: 4}, { cond=p0, acceptance={} source=6 dest: 5}], [{ cond=true, acceptance={} source=7 dest: 8}], [{ cond=true, acceptance={} source=8 dest: 5}], [{ cond=(NOT p0), acceptance={} source=9 dest: 6}, { cond=p0, acceptance={} source=9 dest: 8}], [{ cond=p0, acceptance={} source=10 dest: 7}, { cond=(NOT p0), acceptance={} source=10 dest: 9}]], initial=10, aps=[p1:(AND (GEQ s12 1) (GEQ s13 1)), p2:(OR (LT s1 1) (LT s5 1)), p0:(AND (GEQ s7 1) (GEQ s10 1))], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-sensitive, weak, inherently-weak], stateDesc=[null, null, null, null, null, null, null, null, null, null, null][false, false, false, false, false, false, false, false, false, false, false]]
Product exploration explored 100000 steps with 12275 reset in 104 ms.
Stack based approach found an accepted trace after 4881 steps with 595 reset with depth 15 and stack size 15 in 4 ms.
FORMULA RobotManipulation-PT-00200-LTLFireability-11 FALSE TECHNIQUES STACK_TEST
Treatment of property RobotManipulation-PT-00200-LTLFireability-11 finished in 723 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)))&&F(p1)))'
Support contains 5 out of 15 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 1 places :
Implicit places reduction removed 1 places
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 14 transition count 11
Applied a total of 1 rules in 1 ms. Remains 14 /15 variables (removed 1) and now considering 11/11 (removed 0) transitions.
// Phase 1: matrix 11 rows 14 cols
[2023-03-16 19:42:03] [INFO ] Computed 5 place invariants in 1 ms
[2023-03-16 19:42:03] [INFO ] Implicit Places using invariants in 36 ms returned [11]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 37 ms to find 1 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 13/15 places, 11/11 transitions.
Applied a total of 0 rules in 0 ms. Remains 13 /13 variables (removed 0) and now considering 11/11 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 40 ms. Remains : 13/15 places, 11/11 transitions.
Stuttering acceptance computed with spot in 158 ms :[(OR (NOT p1) p0), p0, (NOT p1), p0, true]
Running random walk in product with property : RobotManipulation-PT-00200-LTLFireability-12 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 1}, { cond=(NOT p1), acceptance={} source=0 dest: 2}], [{ cond=true, acceptance={} source=1 dest: 3}], [{ cond=(NOT p1), acceptance={0} source=2 dest: 2}], [{ cond=(NOT p0), acceptance={} source=3 dest: 3}, { cond=p0, acceptance={} source=3 dest: 4}], [{ cond=true, acceptance={0} source=4 dest: 4}]], initial=0, aps=[p1:(OR (GEQ s10 1) (AND (GEQ s2 1) (GEQ s9 1))), p0:(OR (LT s1 1) (LT s5 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][false, false, false, false, false]]
Entered a terminal (fully accepting) state of product in 29 steps with 1 reset in 0 ms.
FORMULA RobotManipulation-PT-00200-LTLFireability-12 FALSE TECHNIQUES STUTTER_TEST
Treatment of property RobotManipulation-PT-00200-LTLFireability-12 finished in 215 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)&&F(!p1))))'
Support contains 4 out of 15 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 1 places :
Implicit places reduction removed 1 places
Drop transitions removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 0 with 2 rules applied. Total rules applied 2 place count 14 transition count 10
Reduce places removed 1 places and 0 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 1 with 2 rules applied. Total rules applied 4 place count 13 transition count 9
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 2 with 1 rules applied. Total rules applied 5 place count 12 transition count 9
Performed 1 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 1 Pre rules applied. Total rules applied 5 place count 12 transition count 8
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 3 with 2 rules applied. Total rules applied 7 place count 11 transition count 8
Applied a total of 7 rules in 5 ms. Remains 11 /15 variables (removed 4) and now considering 8/11 (removed 3) transitions.
// Phase 1: matrix 8 rows 11 cols
[2023-03-16 19:42:03] [INFO ] Computed 5 place invariants in 1 ms
[2023-03-16 19:42:03] [INFO ] Implicit Places using invariants in 34 ms returned [5]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 35 ms to find 1 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 10/15 places, 8/11 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 10 transition count 7
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 1 with 1 rules applied. Total rules applied 2 place count 9 transition count 7
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 2 with 2 rules applied. Total rules applied 4 place count 8 transition count 6
Applied a total of 4 rules in 3 ms. Remains 8 /10 variables (removed 2) and now considering 6/8 (removed 2) transitions.
// Phase 1: matrix 6 rows 8 cols
[2023-03-16 19:42:03] [INFO ] Computed 4 place invariants in 0 ms
[2023-03-16 19:42:03] [INFO ] Implicit Places using invariants in 26 ms returned []
[2023-03-16 19:42:03] [INFO ] Invariant cache hit.
[2023-03-16 19:42:03] [INFO ] Implicit Places using invariants and state equation in 25 ms returned []
Implicit Place search using SMT with State Equation took 55 ms to find 0 implicit places.
Starting structural reductions in SI_LTL mode, iteration 2 : 8/15 places, 6/11 transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 98 ms. Remains : 8/15 places, 6/11 transitions.
Stuttering acceptance computed with spot in 113 ms :[(OR p0 p1), p0, p1]
Running random walk in product with property : RobotManipulation-PT-00200-LTLFireability-13 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 0}, { cond=p0, acceptance={} source=0 dest: 1}, { cond=p1, acceptance={} source=0 dest: 2}], [{ cond=p0, acceptance={0} source=1 dest: 1}], [{ cond=p1, acceptance={0} source=2 dest: 2}]], initial=0, aps=[p0:(AND (GEQ s6 1) (GEQ s7 1)), p1:(AND (GEQ s3 1) (GEQ s4 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 401 reset in 127 ms.
Stack based approach found an accepted trace after 49 steps with 1 reset with depth 40 and stack size 40 in 1 ms.
FORMULA RobotManipulation-PT-00200-LTLFireability-13 FALSE TECHNIQUES STACK_TEST
Treatment of property RobotManipulation-PT-00200-LTLFireability-13 finished in 354 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)))'
Support contains 3 out of 15 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 11/11 transitions.
Discarding 2 places :
Implicit places reduction removed 2 places
Iterating post reduction 0 with 2 rules applied. Total rules applied 2 place count 13 transition count 11
Applied a total of 2 rules in 0 ms. Remains 13 /15 variables (removed 2) and now considering 11/11 (removed 0) transitions.
// Phase 1: matrix 11 rows 13 cols
[2023-03-16 19:42:03] [INFO ] Computed 4 place invariants in 1 ms
[2023-03-16 19:42:03] [INFO ] Implicit Places using invariants in 30 ms returned [5]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 31 ms to find 1 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 12/15 places, 11/11 transitions.
Applied a total of 0 rules in 0 ms. Remains 12 /12 variables (removed 0) and now considering 11/11 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 31 ms. Remains : 12/15 places, 11/11 transitions.
Stuttering acceptance computed with spot in 83 ms :[(NOT p0), (NOT p0)]
Running random walk in product with property : RobotManipulation-PT-00200-LTLFireability-15 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 1}], [{ cond=(NOT p0), acceptance={0} source=1 dest: 1}]], initial=0, aps=[p0:(AND (GEQ s10 1) (GEQ s6 1) (GEQ s9 1))], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-sensitive, very-weak, weak, inherently-weak], stateDesc=[null, null][false, false]]
Product exploration explored 100000 steps with 15113 reset in 111 ms.
Product exploration explored 100000 steps with 15091 reset in 104 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 : [(NOT p0), (X (NOT p0)), (X (X (NOT p0)))]
False Knowledge obtained : []
Knowledge based reduction with 3 factoid took 115 ms. Reduced automaton from 2 states, 2 edges and 1 AP (stutter sensitive) to 1 states, 1 edges and 1 AP (stutter insensitive).
Stuttering acceptance computed with spot in 37 ms :[(NOT p0)]
Finished random walk after 1205 steps, including 0 resets, run visited all 1 properties in 2 ms. (steps per millisecond=602 )
Knowledge obtained : [(NOT p0), (X (NOT p0)), (X (X (NOT p0)))]
False Knowledge obtained : [(F p0)]
Knowledge based reduction with 3 factoid took 143 ms. Reduced automaton from 1 states, 1 edges and 1 AP (stutter insensitive) to 1 states, 1 edges and 1 AP (stutter insensitive).
Stuttering acceptance computed with spot in 36 ms :[(NOT p0)]
Stuttering acceptance computed with spot in 37 ms :[(NOT p0)]
// Phase 1: matrix 11 rows 12 cols
[2023-03-16 19:42:04] [INFO ] Computed 3 place invariants in 1 ms
Proved EG (NOT p0)
Knowledge obtained : [(NOT p0), (X (NOT p0)), (X (X (NOT p0)))]
False Knowledge obtained : [(F p0), (G (NOT p0))]
Property proved to be false thanks to negative knowledge :(G (NOT p0))
Knowledge based reduction with 3 factoid took 82 ms. Reduced automaton from 1 states, 1 edges and 1 AP (stutter insensitive) to 1 states, 1 edges and 0 AP (stutter insensitive).
FORMULA RobotManipulation-PT-00200-LTLFireability-15 FALSE TECHNIQUES KNOWLEDGE
Treatment of property RobotManipulation-PT-00200-LTLFireability-15 finished in 858 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||G((F(p1) U X(p2))))))'
[2023-03-16 19:42:05] [INFO ] Flatten gal took : 3 ms
[2023-03-16 19:42:05] [INFO ] Export to MCC of 1 properties in file /home/mcc/execution/LTLFireability.sr.xml took 2 ms.
[2023-03-16 19:42:05] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 15 places, 11 transitions and 34 arcs took 0 ms.
Total runtime 11256 ms.
There are residual formulas that ITS could not solve within timeout
pnml2lts-mc model.pnml -s80% --procs=4 --ltl=/tmp/1133/ltl_0_ --buchi-type=spotba --strategy=ufscc --ltl-semantics=spin --state=tree
Could not compute solution for formula : RobotManipulation-PT-00200-LTLFireability-03

BK_STOP 1678995726221

--------------------
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_1.0.0.202303021504.jar
+ 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 RobotManipulation-PT-00200-LTLFireability-03
ltl formula formula --ltl=/tmp/1133/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 15 places, 11 transitions and 34 arcs
pnml2lts-mc( 0/ 4): Petri net Petri analyzed
pnml2lts-mc( 0/ 4): There are no safe places
pnml2lts-mc( 1/ 4): LTL layer: formula: /tmp/1133/ltl_0_
pnml2lts-mc( 3/ 4): LTL layer: formula: /tmp/1133/ltl_0_
pnml2lts-mc( 0/ 4): Loading Petri net took 0.000 real 0.000 user 0.000 sys
pnml2lts-mc( 0/ 4): LTL layer: formula: /tmp/1133/ltl_0_
pnml2lts-mc( 2/ 4): LTL layer: formula: /tmp/1133/ltl_0_
pnml2lts-mc( 0/ 4): buchi has 4 states
pnml2lts-mc( 0/ 4), ** error **: area memory exhausted
free(): double free detected in tcache 2

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="RobotManipulation-PT-00200"
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 RobotManipulation-PT-00200, 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 r361-smll-167891810800060"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/RobotManipulation-PT-00200.tgz
mv RobotManipulation-PT-00200 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 ;