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.r007-oct2-167813595100172.qcow2', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=4294967296 backing_file=/data/fkordon/mcc2023-input.qcow2 backing_fmt=qcow2 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
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=====================================================================
Generated by BenchKit 2-5348
Executing tool lolaxred
Input is AirplaneLD-COL-0010, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r007-oct2-167813595100172
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 444K
-rw-r--r-- 1 mcc users 7.7K Feb 26 11:10 CTLCardinality.txt
-rw-r--r-- 1 mcc users 74K Feb 26 11:10 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.6K Feb 26 11:08 CTLFireability.txt
-rw-r--r-- 1 mcc users 49K Feb 26 11:08 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:40 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.5K Jan 29 11:40 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.9K Feb 25 15:30 LTLCardinality.txt
-rw-r--r-- 1 mcc users 24K Feb 25 15:30 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.4K Feb 25 15:30 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Feb 25 15:30 LTLFireability.xml
-rw-r--r-- 1 mcc users 11K Feb 26 11:13 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 93K Feb 26 11:13 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 6.8K Feb 26 11:12 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 54K Feb 26 11:12 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Feb 25 15:30 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Feb 25 15:30 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 5 18:22 equiv_pt
-rw-r--r-- 1 mcc users 5 Mar 5 18:22 instance
-rw-r--r-- 1 mcc users 5 Mar 5 18:22 iscolored
-rw-r--r-- 1 mcc users 40K Mar 5 18:22 model.pnml

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

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

The expected result is a vector of booleans
BOOL_VECTOR

here is the order used to build the result vector(from text file)
FORMULA_NAME AirplaneLD-COL-0010-LTLFireability-00
FORMULA_NAME AirplaneLD-COL-0010-LTLFireability-01
FORMULA_NAME AirplaneLD-COL-0010-LTLFireability-02
FORMULA_NAME AirplaneLD-COL-0010-LTLFireability-03
FORMULA_NAME AirplaneLD-COL-0010-LTLFireability-04
FORMULA_NAME AirplaneLD-COL-0010-LTLFireability-05
FORMULA_NAME AirplaneLD-COL-0010-LTLFireability-06
FORMULA_NAME AirplaneLD-COL-0010-LTLFireability-07
FORMULA_NAME AirplaneLD-COL-0010-LTLFireability-08
FORMULA_NAME AirplaneLD-COL-0010-LTLFireability-09
FORMULA_NAME AirplaneLD-COL-0010-LTLFireability-10
FORMULA_NAME AirplaneLD-COL-0010-LTLFireability-11
FORMULA_NAME AirplaneLD-COL-0010-LTLFireability-12
FORMULA_NAME AirplaneLD-COL-0010-LTLFireability-13
FORMULA_NAME AirplaneLD-COL-0010-LTLFireability-14
FORMULA_NAME AirplaneLD-COL-0010-LTLFireability-15

=== Now, execution of the tool begins

BK_START 1678343833629

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=lolaxred
BK_EXAMINATION=LTLFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=AirplaneLD-COL-0010
Applying reductions before tool lola
Invoking reducer
Running Version 202303021504
[2023-03-09 06:37:16] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, LTLFireability, -timeout, 360, -rebuildPNML]
[2023-03-09 06:37:16] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-09 06:37:16] [INFO ] Detected file is not PT type :http://www.pnml.org/version-2009/grammar/symmetricnet
log4j:WARN No appenders could be found for logger (org.apache.axiom.locator.DefaultOMMetaFactoryLocator).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
[2023-03-09 06:37:16] [WARNING] Using fallBack plugin, rng conformance not checked
[2023-03-09 06:37:17] [INFO ] Load time of PNML (colored model parsed with PNMLFW) : 852 ms
[2023-03-09 06:37:17] [INFO ] Detected 3 constant HL places corresponding to 32 PT places.
[2023-03-09 06:37:17] [INFO ] Imported 20 HL places and 15 HL transitions for a total of 89 PT places and 132.0 transition bindings in 46 ms.
Parsed 16 properties from file /home/mcc/execution/LTLFireability.xml in 53 ms.
Working with output stream class java.io.PrintStream
[2023-03-09 06:37:17] [INFO ] Built PT skeleton of HLPN with 20 places and 15 transitions 56 arcs in 4 ms.
[2023-03-09 06:37:17] [INFO ] Skeletonized 13 HLPN properties in 1 ms. Removed 3 properties that had guard overlaps.
Initial state reduction rules removed 2 formulas.
FORMULA AirplaneLD-COL-0010-LTLFireability-03 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA AirplaneLD-COL-0010-LTLFireability-06 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Computed a total of 20 stabilizing places and 15 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 20 transition count 15
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Remains 2 properties that can be checked using skeleton over-approximation.
Reduce places removed 3 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce redundant transitions removed 1 transitions.
Computed a total of 17 stabilizing places and 14 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 17 transition count 14
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Finished random walk after 110 steps, including 13 resets, run visited all 4 properties in 14 ms. (steps per millisecond=7 )
[2023-03-09 06:37:17] [INFO ] Flatten gal took : 13 ms
[2023-03-09 06:37:17] [INFO ] Flatten gal took : 3 ms
Symmetric sort wr.t. initial and guards and successors and join/free detected :Altitude
Symmetric sort wr.t. initial detected :Altitude
Transition t3_2 : guard parameter $A(Altitude:20) in guard (OR (GEQ $A 9) (EQ $A 19))introduces in Altitude(20) partition with 2 elements
Transition t3_1 : guard parameter $A(Altitude:20) in guard (AND (LT $A 9) (NEQ $A 19))introduces in Altitude(20) partition with 2 elements
Sort wr.t. initial and guards Altitude has partition 2
Applying symmetric unfolding of partitioned symmetric sort :Altitude domain size was 20 reducing to 2 values.
For transition t3_2:(OR (GEQ $A 9) (EQ $A 19)) -> (EQ $A 1)
For transition t3_1:(AND (LT $A 9) (NEQ $A 19)) -> (EQ $A 0)
Symmetric sort wr.t. initial and guards and successors and join/free detected :Speed
Symmetric sort wr.t. initial detected :Speed
Transition t5_2 : guard parameter $S(Speed:10) in guard (OR (LEQ $S 4) (EQ $S 9))introduces in Speed(10) partition with 2 elements
Transition t5_1 : guard parameter $S(Speed:10) in guard (AND (GT $S 4) (NEQ $S 9))introduces in Speed(10) partition with 2 elements
Transition t4_2 : guard parameter $S(Speed:10) in guard (OR (LEQ $S 4) (EQ $S 9))introduces in Speed(10) partition with 2 elements
Transition t4_1 : guard parameter $S(Speed:10) in guard (AND (GT $S 4) (NEQ $S 9))introduces in Speed(10) partition with 2 elements
Sort wr.t. initial and guards Speed has partition 2
Applying symmetric unfolding of partitioned symmetric sort :Speed domain size was 10 reducing to 2 values.
For transition t5_2:(OR (LEQ $S 4) (EQ $S 9)) -> (EQ $S 1)
For transition t5_1:(AND (GT $S 4) (NEQ $S 9)) -> (EQ $S 0)
For transition t4_2:(OR (LEQ $S 4) (EQ $S 9)) -> (EQ $S 1)
For transition t4_1:(AND (GT $S 4) (NEQ $S 9)) -> (EQ $S 0)
Symmetric sort wr.t. initial and guards and successors and join/free detected :Signal
Arc [19:1*[1]] contains constants of sort Signal
Transition t5_2 : constants on arcs in [[19:1*[1]]] introduces in Signal(2) partition with 1 elements that refines current partition to 2 subsets.
Symmetric sort wr.t. initial and guards and successors and join/free detected :Weight
Symmetric sort wr.t. initial detected :Weight
Transition t2_2 : guard parameter $W(Weight:2) in guard (EQ $W 1)introduces in Weight(2) partition with 2 elements
[2023-03-09 06:37:17] [INFO ] Unfolded HLPN to a Petri net with 29 places and 20 transitions 56 arcs in 11 ms.
[2023-03-09 06:37:17] [INFO ] Unfolded 14 HLPN properties in 1 ms.
Initial state reduction rules removed 4 formulas.
[2023-03-09 06:37:17] [INFO ] Reduced 1 identical enabling conditions.
[2023-03-09 06:37:17] [INFO ] Reduced 1 identical enabling conditions.
[2023-03-09 06:37:17] [INFO ] Reduced 1 identical enabling conditions.
[2023-03-09 06:37:17] [INFO ] Reduced 1 identical enabling conditions.
[2023-03-09 06:37:17] [INFO ] Reduced 1 identical enabling conditions.
[2023-03-09 06:37:17] [INFO ] Reduced 1 identical enabling conditions.
[2023-03-09 06:37:17] [INFO ] Reduced 1 identical enabling conditions.
[2023-03-09 06:37:17] [INFO ] Reduced 1 identical enabling conditions.
[2023-03-09 06:37:17] [INFO ] Reduced 1 identical enabling conditions.
[2023-03-09 06:37:17] [INFO ] Reduced 1 identical enabling conditions.
[2023-03-09 06:37:17] [INFO ] Reduced 1 identical enabling conditions.
[2023-03-09 06:37:17] [INFO ] Reduced 1 identical enabling conditions.
Reduce places removed 6 places and 0 transitions.
FORMULA AirplaneLD-COL-0010-LTLFireability-02 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA AirplaneLD-COL-0010-LTLFireability-08 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA AirplaneLD-COL-0010-LTLFireability-10 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA AirplaneLD-COL-0010-LTLFireability-14 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Support contains 17 out of 23 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 23/23 places, 20/20 transitions.
Reduce places removed 3 places and 0 transitions.
Iterating post reduction 0 with 3 rules applied. Total rules applied 3 place count 20 transition count 20
Applied a total of 3 rules in 6 ms. Remains 20 /23 variables (removed 3) and now considering 20/20 (removed 0) transitions.
// Phase 1: matrix 20 rows 20 cols
[2023-03-09 06:37:17] [INFO ] Computed 1 place invariants in 10 ms
[2023-03-09 06:37:17] [INFO ] Implicit Places using invariants in 231 ms returned []
[2023-03-09 06:37:17] [INFO ] Invariant cache hit.
[2023-03-09 06:37:18] [INFO ] Implicit Places using invariants and state equation in 184 ms returned []
Implicit Place search using SMT with State Equation took 445 ms to find 0 implicit places.
[2023-03-09 06:37:18] [INFO ] Invariant cache hit.
[2023-03-09 06:37:18] [INFO ] Dead Transitions using invariants and state equation in 35 ms found 0 transitions.
Starting structural reductions in LTL mode, iteration 1 : 20/23 places, 20/20 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 488 ms. Remains : 20/23 places, 20/20 transitions.
Support contains 17 out of 20 places after structural reductions.
[2023-03-09 06:37:18] [INFO ] Flatten gal took : 3 ms
[2023-03-09 06:37:18] [INFO ] Flatten gal took : 3 ms
[2023-03-09 06:37:18] [INFO ] Input system was already deterministic with 20 transitions.
Finished random walk after 99 steps, including 12 resets, run visited all 15 properties in 8 ms. (steps per millisecond=12 )
FORMULA AirplaneLD-COL-0010-LTLFireability-13 FALSE TECHNIQUES REACHABILITY_KNOWLEDGE
Computed a total of 20 stabilizing places and 20 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 20 transition count 20
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202303021504/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(F((p0||G(p1)))))'
Support contains 2 out of 20 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 20/20 places, 20/20 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 19 transition count 19
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 19 transition count 19
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 3 place count 19 transition count 18
Applied a total of 3 rules in 3 ms. Remains 19 /20 variables (removed 1) and now considering 18/20 (removed 2) transitions.
// Phase 1: matrix 18 rows 19 cols
[2023-03-09 06:37:18] [INFO ] Computed 1 place invariants in 1 ms
[2023-03-09 06:37:18] [INFO ] Implicit Places using invariants in 171 ms returned [9]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 172 ms to find 1 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 18/20 places, 18/20 transitions.
Applied a total of 0 rules in 2 ms. Remains 18 /18 variables (removed 0) and now considering 18/18 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 177 ms. Remains : 18/20 places, 18/20 transitions.
Stuttering acceptance computed with spot in 271 ms :[(AND (NOT p1) (NOT p0)), (AND (NOT p1) (NOT p0))]
Running random walk in product with property : AirplaneLD-COL-0010-LTLFireability-00 automaton TGBA Formula[mat=[[{ cond=(AND p1 (NOT p0)), acceptance={} source=0 dest: 0}, { cond=(AND (NOT p1) (NOT p0)), acceptance={0} source=0 dest: 0}], [{ cond=true, acceptance={} source=1 dest: 0}]], initial=1, aps=[p1:(AND (GEQ s1 1) (GEQ s3 1)), p0:(GEQ s1 1)], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-sensitive], stateDesc=[null, null][false, false]]
Stuttering criterion allowed to conclude after 15 steps with 4 reset in 1 ms.
FORMULA AirplaneLD-COL-0010-LTLFireability-00 FALSE TECHNIQUES STUTTER_TEST
Treatment of property AirplaneLD-COL-0010-LTLFireability-00 finished in 529 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202303021504/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(((!p0&&G(!p1)) U (G((!p0&&G(!p1)))||(!p0&&F(!p2)&&G(!p1))))))'
Support contains 5 out of 20 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 20/20 places, 20/20 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 19 transition count 19
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 19 transition count 19
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 3 place count 19 transition count 18
Applied a total of 3 rules in 1 ms. Remains 19 /20 variables (removed 1) and now considering 18/20 (removed 2) transitions.
[2023-03-09 06:37:19] [INFO ] Invariant cache hit.
[2023-03-09 06:37:19] [INFO ] Implicit Places using invariants in 64 ms returned []
[2023-03-09 06:37:19] [INFO ] Invariant cache hit.
[2023-03-09 06:37:19] [INFO ] Implicit Places using invariants and state equation in 213 ms returned []
Implicit Place search using SMT with State Equation took 280 ms to find 0 implicit places.
[2023-03-09 06:37:19] [INFO ] Invariant cache hit.
[2023-03-09 06:37:19] [INFO ] Dead Transitions using invariants and state equation in 45 ms found 0 transitions.
Starting structural reductions in LTL mode, iteration 1 : 19/20 places, 18/20 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 334 ms. Remains : 19/20 places, 18/20 transitions.
Stuttering acceptance computed with spot in 444 ms :[true, (OR p1 p0), (OR p1 p0), (OR p2 p1), p1, (OR p1 (AND p0 p2))]
Running random walk in product with property : AirplaneLD-COL-0010-LTLFireability-01 automaton TGBA Formula[mat=[[{ cond=true, acceptance={0} source=0 dest: 0}], [{ cond=true, acceptance={} source=1 dest: 2}], [{ cond=(OR p1 p0), acceptance={} source=2 dest: 0}, { cond=(AND (NOT p1) (NOT p0) (NOT p2)), acceptance={} source=2 dest: 4}, { cond=(AND (NOT p1) (NOT p0) p2), acceptance={} source=2 dest: 5}], [{ cond=p1, acceptance={0} source=3 dest: 0}, { cond=(AND (NOT p1) p2), acceptance={0} source=3 dest: 3}, { cond=(AND (NOT p1) (NOT p2)), acceptance={0} source=3 dest: 4}], [{ cond=p1, acceptance={} source=4 dest: 0}, { cond=(NOT p1), acceptance={} source=4 dest: 4}], [{ cond=p1, acceptance={} source=5 dest: 0}, { cond=(AND (NOT p1) p0 p2), acceptance={} source=5 dest: 3}, { cond=(AND (NOT p1) (NOT p2)), acceptance={} source=5 dest: 4}, { cond=(AND (NOT p1) (NOT p0) p2), acceptance={} source=5 dest: 5}]], initial=1, aps=[p1:(AND (GEQ s8 1) (GEQ s11 1)), p0:(AND (GEQ s9 1) (GEQ s13 1)), p2:(AND (GEQ s8 1) (GEQ s10 1))], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, complete, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-sensitive, very-weak, weak, inherently-weak], stateDesc=[null, null, null, null, null, null][false, false, false, false, false, false]]
Entered a terminal (fully accepting) state of product in 21 steps with 2 reset in 2 ms.
FORMULA AirplaneLD-COL-0010-LTLFireability-01 FALSE TECHNIQUES STUTTER_TEST
Treatment of property AirplaneLD-COL-0010-LTLFireability-01 finished in 813 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 U (p1||G(p0))))))'
Support contains 2 out of 20 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 20/20 places, 20/20 transitions.
Graph (complete) has 18 edges and 20 vertex of which 2 are kept as prefixes of interest. Removing 18 places using SCC suffix rule.1 ms
Discarding 18 places :
Also discarding 16 output transitions
Drop transitions removed 16 transitions
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 3 place count 2 transition count 2
Applied a total of 3 rules in 20 ms. Remains 2 /20 variables (removed 18) and now considering 2/20 (removed 18) transitions.
// Phase 1: matrix 2 rows 2 cols
[2023-03-09 06:37:19] [INFO ] Computed 0 place invariants in 24 ms
[2023-03-09 06:37:19] [INFO ] Implicit Places using invariants in 45 ms returned []
[2023-03-09 06:37:19] [INFO ] Invariant cache hit.
[2023-03-09 06:37:20] [INFO ] Implicit Places using invariants and state equation in 29 ms returned []
Implicit Place search using SMT with State Equation took 88 ms to find 0 implicit places.
[2023-03-09 06:37:20] [INFO ] Redundant transitions in 0 ms returned []
[2023-03-09 06:37:20] [INFO ] Invariant cache hit.
[2023-03-09 06:37:20] [INFO ] Dead Transitions using invariants and state equation in 25 ms found 0 transitions.
Starting structural reductions in SI_LTL mode, iteration 1 : 2/20 places, 2/20 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 142 ms. Remains : 2/20 places, 2/20 transitions.
Stuttering acceptance computed with spot in 110 ms :[(AND (NOT p1) (NOT p0)), (AND (NOT p1) (NOT p0))]
Running random walk in product with property : AirplaneLD-COL-0010-LTLFireability-04 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 0}, { cond=(AND (NOT p1) (NOT p0)), acceptance={} source=0 dest: 1}], [{ cond=(AND (NOT p1) p0), acceptance={} source=1 dest: 1}, { cond=(AND (NOT p1) (NOT p0)), acceptance={0} source=1 dest: 1}]], initial=0, aps=[p1:(AND (LT s0 1) (LT s1 1)), p0:(LT s1 1)], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, no-univ-branch, stutter-invariant], stateDesc=[null, null][true, true]]
Product exploration explored 100000 steps with 33333 reset in 207 ms.
Product exploration explored 100000 steps with 33333 reset in 107 ms.
Computed a total of 2 stabilizing places and 2 stable transitions
Complete graph has no SCC; deadlocks are unavoidable. place count 2 transition count 2
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge (and all enablings converge to false).
Detected that all paths lead to deadlock. Applying this knowledge to assert that all AP eventually converge : F ( (Ga|G!a) & (Gb|G!b)...)
Knowledge obtained : [(AND (NOT p1) (NOT p0)), (X (X (NOT (AND (NOT p1) p0)))), (X (X (NOT (AND (NOT p1) (NOT p0))))), (F (G p1)), (F (G p0))]
False Knowledge obtained : [(X (AND (NOT p1) p0)), (X (NOT (AND (NOT p1) p0))), (X (AND (NOT p1) (NOT p0))), (X (NOT (AND (NOT p1) (NOT p0))))]
Property proved to be true thanks to knowledge :(F (G p1))
Knowledge based reduction with 5 factoid took 338 ms. Reduced automaton from 2 states, 4 edges and 2 AP (stutter insensitive) to 1 states, 0 edges and 0 AP (stutter insensitive).
FORMULA AirplaneLD-COL-0010-LTLFireability-04 TRUE TECHNIQUES KNOWLEDGE
Treatment of property AirplaneLD-COL-0010-LTLFireability-04 finished in 982 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202303021504/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X((p0 U X(X(G(p1))))))'
Support contains 4 out of 20 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 20/20 places, 20/20 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 20/20 (removed 0) transitions.
// Phase 1: matrix 20 rows 20 cols
[2023-03-09 06:37:20] [INFO ] Computed 1 place invariants in 1 ms
[2023-03-09 06:37:20] [INFO ] Implicit Places using invariants in 63 ms returned [9]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 64 ms to find 1 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 19/20 places, 20/20 transitions.
Applied a total of 0 rules in 0 ms. Remains 19 /19 variables (removed 0) and now considering 20/20 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 66 ms. Remains : 19/20 places, 20/20 transitions.
Stuttering acceptance computed with spot in 213 ms :[(NOT p1), (NOT p1), (NOT p1), true, (NOT p1)]
Running random walk in product with property : AirplaneLD-COL-0010-LTLFireability-05 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 4}], [{ cond=true, acceptance={} source=1 dest: 2}], [{ cond=p1, acceptance={} source=2 dest: 2}, { cond=(NOT p1), acceptance={} source=2 dest: 3}], [{ cond=true, acceptance={0} source=3 dest: 3}], [{ cond=(NOT p0), acceptance={} source=4 dest: 1}, { cond=(AND p0 p1), acceptance={} source=4 dest: 4}, { cond=(AND p0 (NOT p1)), acceptance={0} source=4 dest: 4}]], initial=0, aps=[p1:(AND (GEQ s5 1) (GEQ s17 1)), p0:(OR (AND (GEQ s7 1) (GEQ s13 1)) (AND (GEQ s5 1) (GEQ s17 1)))], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, complete, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-sensitive], stateDesc=[null, null, null, null, null][false, false, false, false, false]]
Entered a terminal (fully accepting) state of product in 3 steps with 0 reset in 1 ms.
FORMULA AirplaneLD-COL-0010-LTLFireability-05 FALSE TECHNIQUES STUTTER_TEST
Treatment of property AirplaneLD-COL-0010-LTLFireability-05 finished in 308 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' '!(((p0 U G(p1))||F(G((p0 U p2)))))'
Support contains 5 out of 20 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 20/20 places, 20/20 transitions.
Graph (complete) has 18 edges and 20 vertex of which 16 are kept as prefixes of interest. Removing 4 places using SCC suffix rule.0 ms
Discarding 4 places :
Also discarding 4 output transitions
Drop transitions removed 4 transitions
Applied a total of 1 rules in 1 ms. Remains 16 /20 variables (removed 4) and now considering 16/20 (removed 4) transitions.
// Phase 1: matrix 16 rows 16 cols
[2023-03-09 06:37:21] [INFO ] Computed 1 place invariants in 0 ms
[2023-03-09 06:37:21] [INFO ] Implicit Places using invariants in 88 ms returned []
[2023-03-09 06:37:21] [INFO ] Invariant cache hit.
[2023-03-09 06:37:21] [INFO ] Implicit Places using invariants and state equation in 87 ms returned []
Implicit Place search using SMT with State Equation took 183 ms to find 0 implicit places.
[2023-03-09 06:37:21] [INFO ] Redundant transitions in 0 ms returned []
[2023-03-09 06:37:21] [INFO ] Invariant cache hit.
[2023-03-09 06:37:21] [INFO ] Dead Transitions using invariants and state equation in 50 ms found 0 transitions.
Starting structural reductions in SI_LTL mode, iteration 1 : 16/20 places, 16/20 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 265 ms. Remains : 16/20 places, 16/20 transitions.
Stuttering acceptance computed with spot in 347 ms :[(AND (NOT p1) (NOT p2)), (AND (NOT p1) (NOT p2)), (NOT p2), (AND (NOT p1) (NOT p2)), (NOT p2)]
Running random walk in product with property : AirplaneLD-COL-0010-LTLFireability-07 automaton TGBA Formula[mat=[[{ cond=p0, acceptance={} source=0 dest: 0}, { cond=(AND (NOT p1) (NOT p2) p0), acceptance={} source=0 dest: 1}, { cond=(AND (NOT p1) (NOT p0)), acceptance={} source=0 dest: 2}, { cond=(AND p1 (NOT p0)), acceptance={} source=0 dest: 3}], [{ cond=(AND p1 (NOT p2) p0), acceptance={} source=1 dest: 1}, { cond=(AND (NOT p1) (NOT p2) p0), acceptance={0} source=1 dest: 1}, { cond=(AND (NOT p1) (NOT p2) (NOT p0)), acceptance={} source=1 dest: 2}, { cond=(AND p1 (NOT p0)), acceptance={} source=1 dest: 3}], [{ cond=(OR p2 p0), acceptance={} source=2 dest: 2}, { cond=(AND (NOT p2) (NOT p0)), acceptance={0} source=2 dest: 2}, { cond=(AND (NOT p2) p0), acceptance={0} source=2 dest: 4}], [{ cond=(NOT p1), acceptance={} source=3 dest: 2}, { cond=p1, acceptance={} source=3 dest: 3}, { cond=(AND (NOT p1) (NOT p2) p0), acceptance={} source=3 dest: 4}], [{ cond=(AND (NOT p2) (NOT p0)), acceptance={0} source=4 dest: 2}, { cond=(AND (NOT p2) p0), acceptance={0} source=4 dest: 4}]], initial=0, aps=[p0:(AND (GEQ s4 1) (GEQ s15 1)), p1:(GEQ s0 1), p2:(OR (GEQ s0 1) (AND (GEQ s7 1) (GEQ s10 1)))], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, no-univ-branch, stutter-invariant], stateDesc=[null, null, null, null, null][true, true, true, true, true]]
Stuttering criterion allowed to conclude after 8 steps with 0 reset in 1 ms.
FORMULA AirplaneLD-COL-0010-LTLFireability-07 FALSE TECHNIQUES STUTTER_TEST
Treatment of property AirplaneLD-COL-0010-LTLFireability-07 finished in 637 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((X(p1)&&p0))))'
Support contains 3 out of 20 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 20/20 places, 20/20 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 19 transition count 19
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 19 transition count 19
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 3 place count 19 transition count 18
Applied a total of 3 rules in 3 ms. Remains 19 /20 variables (removed 1) and now considering 18/20 (removed 2) transitions.
// Phase 1: matrix 18 rows 19 cols
[2023-03-09 06:37:21] [INFO ] Computed 1 place invariants in 1 ms
[2023-03-09 06:37:21] [INFO ] Implicit Places using invariants in 52 ms returned [9]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 54 ms to find 1 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 18/20 places, 18/20 transitions.
Applied a total of 0 rules in 1 ms. Remains 18 /18 variables (removed 0) and now considering 18/18 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 58 ms. Remains : 18/20 places, 18/20 transitions.
Stuttering acceptance computed with spot in 213 ms :[(OR (NOT p0) (NOT p1)), (OR (NOT p0) (NOT p1)), (NOT p1)]
Running random walk in product with property : AirplaneLD-COL-0010-LTLFireability-09 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 0}, { cond=(NOT p0), acceptance={} source=0 dest: 1}, { cond=p0, acceptance={} source=0 dest: 2}], [{ cond=(NOT p0), acceptance={0} source=1 dest: 1}, { cond=p0, acceptance={0} source=1 dest: 2}], [{ cond=(AND (NOT p0) (NOT p1)), acceptance={0} source=2 dest: 1}, { cond=(AND p0 (NOT p1)), acceptance={0} source=2 dest: 2}]], initial=0, aps=[p0:(AND (GEQ s8 1) (GEQ s9 1)), p1:(AND (GEQ s8 1) (GEQ s10 1))], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, no-univ-branch, stutter-sensitive, weak, inherently-weak], stateDesc=[null, null, null][false, false, false]]
Stuttering criterion allowed to conclude after 7 steps with 0 reset in 1 ms.
FORMULA AirplaneLD-COL-0010-LTLFireability-09 FALSE TECHNIQUES STUTTER_TEST
Treatment of property AirplaneLD-COL-0010-LTLFireability-09 finished in 299 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' '!((!p0 U X((p1 U p2))))'
Support contains 6 out of 20 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 20/20 places, 20/20 transitions.
Applied a total of 0 rules in 1 ms. Remains 20 /20 variables (removed 0) and now considering 20/20 (removed 0) transitions.
// Phase 1: matrix 20 rows 20 cols
[2023-03-09 06:37:22] [INFO ] Computed 1 place invariants in 1 ms
[2023-03-09 06:37:22] [INFO ] Implicit Places using invariants in 47 ms returned [9]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 49 ms to find 1 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 19/20 places, 20/20 transitions.
Applied a total of 0 rules in 0 ms. Remains 19 /19 variables (removed 0) and now considering 20/20 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 51 ms. Remains : 19/20 places, 20/20 transitions.
Stuttering acceptance computed with spot in 234 ms :[(NOT p2), true, (NOT p2), (NOT p2)]
Running random walk in product with property : AirplaneLD-COL-0010-LTLFireability-11 automaton TGBA Formula[mat=[[{ cond=(NOT p0), acceptance={} source=0 dest: 2}, { cond=p0, acceptance={} source=0 dest: 3}], [{ cond=true, acceptance={0} source=1 dest: 1}], [{ cond=(AND (NOT p0) (NOT p2)), acceptance={0} source=2 dest: 2}, { cond=(AND p0 (NOT p2)), acceptance={0} source=2 dest: 3}], [{ cond=(AND (NOT p2) (NOT p1)), acceptance={0} source=3 dest: 1}, { cond=(AND (NOT p2) p1), acceptance={0} source=3 dest: 3}]], initial=0, aps=[p0:(AND (GEQ s7 1) (GEQ s13 1)), p2:(AND (GEQ s8 1) (GEQ s10 1)), p1:(AND (GEQ s5 1) (GEQ s17 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, null, null][false, false, false, false]]
Stuttering criterion allowed to conclude after 6 steps with 0 reset in 0 ms.
FORMULA AirplaneLD-COL-0010-LTLFireability-11 FALSE TECHNIQUES STUTTER_TEST
Treatment of property AirplaneLD-COL-0010-LTLFireability-11 finished in 320 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202303021504/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X((p0&&G(p1))))'
Support contains 3 out of 20 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 20/20 places, 20/20 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 19 transition count 19
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 19 transition count 19
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 3 place count 19 transition count 18
Applied a total of 3 rules in 2 ms. Remains 19 /20 variables (removed 1) and now considering 18/20 (removed 2) transitions.
// Phase 1: matrix 18 rows 19 cols
[2023-03-09 06:37:22] [INFO ] Computed 1 place invariants in 1 ms
[2023-03-09 06:37:22] [INFO ] Implicit Places using invariants in 63 ms returned []
[2023-03-09 06:37:22] [INFO ] Invariant cache hit.
[2023-03-09 06:37:22] [INFO ] Implicit Places using invariants and state equation in 108 ms returned []
Implicit Place search using SMT with State Equation took 174 ms to find 0 implicit places.
[2023-03-09 06:37:22] [INFO ] Invariant cache hit.
[2023-03-09 06:37:22] [INFO ] Dead Transitions using invariants and state equation in 64 ms found 0 transitions.
Starting structural reductions in LTL mode, iteration 1 : 19/20 places, 18/20 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 241 ms. Remains : 19/20 places, 18/20 transitions.
Stuttering acceptance computed with spot in 236 ms :[true, (OR (NOT p0) (NOT p1)), (NOT p1), (OR (NOT p0) (NOT p1))]
Running random walk in product with property : AirplaneLD-COL-0010-LTLFireability-12 automaton TGBA Formula[mat=[[{ cond=true, acceptance={0} source=0 dest: 0}], [{ cond=true, acceptance={} source=1 dest: 3}], [{ cond=(NOT p1), acceptance={} source=2 dest: 0}, { cond=p1, acceptance={} source=2 dest: 2}], [{ cond=(OR (NOT p0) (NOT p1)), acceptance={} source=3 dest: 0}, { cond=(AND p0 p1), acceptance={} source=3 dest: 2}]], initial=1, aps=[p1:(AND (GEQ s9 1) (GEQ s13 1)), p0:(GEQ s0 1)], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, complete, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-sensitive, terminal, very-weak, weak, inherently-weak], stateDesc=[null, null, null, null][false, false, false, false]]
Entered a terminal (fully accepting) state of product in 1 steps with 0 reset in 0 ms.
FORMULA AirplaneLD-COL-0010-LTLFireability-12 FALSE TECHNIQUES STUTTER_TEST
Treatment of property AirplaneLD-COL-0010-LTLFireability-12 finished in 504 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202303021504/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X((p0||F(p1))))'
Support contains 3 out of 20 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 20/20 places, 20/20 transitions.
Applied a total of 0 rules in 0 ms. Remains 20 /20 variables (removed 0) and now considering 20/20 (removed 0) transitions.
// Phase 1: matrix 20 rows 20 cols
[2023-03-09 06:37:22] [INFO ] Computed 1 place invariants in 1 ms
[2023-03-09 06:37:23] [INFO ] Implicit Places using invariants in 93 ms returned [9]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 95 ms to find 1 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 19/20 places, 20/20 transitions.
Applied a total of 0 rules in 0 ms. Remains 19 /19 variables (removed 0) and now considering 20/20 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 96 ms. Remains : 19/20 places, 20/20 transitions.
Stuttering acceptance computed with spot in 165 ms :[(AND (NOT p1) (NOT p0)), (NOT p1), (AND (NOT p1) (NOT p0))]
Running random walk in product with property : AirplaneLD-COL-0010-LTLFireability-15 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 2}], [{ cond=(NOT p1), acceptance={0} source=1 dest: 1}], [{ cond=(AND (NOT p0) (NOT p1)), acceptance={} source=2 dest: 1}]], initial=0, aps=[p1:(GEQ s4 1), p0:(AND (GEQ s5 1) (GEQ s17 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, null][false, false, false]]
Stuttering criterion allowed to conclude after 9 steps with 1 reset in 0 ms.
FORMULA AirplaneLD-COL-0010-LTLFireability-15 FALSE TECHNIQUES STUTTER_TEST
Treatment of property AirplaneLD-COL-0010-LTLFireability-15 finished in 291 ms.
All properties solved by simple procedures.
Total runtime 6935 ms.
ITS solved all properties within timeout

BK_STOP 1678343843810

--------------------
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

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="AirplaneLD-COL-0010"
export BK_EXAMINATION="LTLFireability"
export BK_TOOL="lolaxred"
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 lolaxred"
echo " Input is AirplaneLD-COL-0010, 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 r007-oct2-167813595100172"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/AirplaneLD-COL-0010.tgz
mv AirplaneLD-COL-0010 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 ;