About the Execution of LTSMin+red for Philosophers-COL-000500
| Execution Summary | |||||
| Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
| 12317.836 | 2202147.00 | 7599964.00 | 1818.70 | FFFF?FFFFF?FFFTT | normal |
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.r297-tall-167873950000132.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2023-input.qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
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=====================================================================
Generated by BenchKit 2-5348
Executing tool ltsminxred
Input is Philosophers-COL-000500, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r297-tall-167873950000132
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 540K
-rw-r--r-- 1 mcc users 9.1K Feb 25 14:00 CTLCardinality.txt
-rw-r--r-- 1 mcc users 100K Feb 25 14:00 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.6K Feb 25 13:28 CTLFireability.txt
-rw-r--r-- 1 mcc users 50K Feb 25 13:28 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Jan 29 11:40 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.8K Jan 29 11:40 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 3.7K Feb 25 16:33 LTLCardinality.txt
-rw-r--r-- 1 mcc users 26K Feb 25 16:33 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.4K Feb 25 16:33 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Feb 25 16:33 LTLFireability.xml
-rw-r--r-- 1 mcc users 13K Feb 25 14:59 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 136K Feb 25 14:59 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 8.8K Feb 25 14:24 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 77K Feb 25 14:24 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Feb 25 16:33 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Feb 25 16:33 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 5 18:23 equiv_pt
-rw-r--r-- 1 mcc users 7 Mar 5 18:23 instance
-rw-r--r-- 1 mcc users 5 Mar 5 18:23 iscolored
-rw-r--r-- 1 mcc users 31K 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 Philosophers-COL-000500-LTLFireability-00
FORMULA_NAME Philosophers-COL-000500-LTLFireability-01
FORMULA_NAME Philosophers-COL-000500-LTLFireability-02
FORMULA_NAME Philosophers-COL-000500-LTLFireability-03
FORMULA_NAME Philosophers-COL-000500-LTLFireability-04
FORMULA_NAME Philosophers-COL-000500-LTLFireability-05
FORMULA_NAME Philosophers-COL-000500-LTLFireability-06
FORMULA_NAME Philosophers-COL-000500-LTLFireability-07
FORMULA_NAME Philosophers-COL-000500-LTLFireability-08
FORMULA_NAME Philosophers-COL-000500-LTLFireability-09
FORMULA_NAME Philosophers-COL-000500-LTLFireability-10
FORMULA_NAME Philosophers-COL-000500-LTLFireability-11
FORMULA_NAME Philosophers-COL-000500-LTLFireability-12
FORMULA_NAME Philosophers-COL-000500-LTLFireability-13
FORMULA_NAME Philosophers-COL-000500-LTLFireability-14
FORMULA_NAME Philosophers-COL-000500-LTLFireability-15
=== Now, execution of the tool begins
BK_START 1679452666227
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=Philosophers-COL-000500
Applying reductions before tool ltsmin
Invoking reducer
Running Version 202303021504
[2023-03-22 02:37:48] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, LTLFireability, -timeout, 360, -rebuildPNML]
[2023-03-22 02:37:48] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-03-22 02:37:48] [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.
[2023-03-22 02:37:48] [WARNING] Using fallBack plugin, rng conformance not checked
[2023-03-22 02:37:49] [INFO ] Load time of PNML (colored model parsed with PNMLFW) : 826 ms
[2023-03-22 02:37:49] [INFO ] Imported 5 HL places and 5 HL transitions for a total of 2500 PT places and 2500.0 transition bindings in 24 ms.
Parsed 16 properties from file /home/mcc/execution/LTLFireability.xml in 9 ms.
Working with output stream class java.io.PrintStream
[2023-03-22 02:37:49] [INFO ] Built PT skeleton of HLPN with 5 places and 5 transitions 15 arcs in 5 ms.
[2023-03-22 02:37:49] [INFO ] Skeletonized 16 HLPN properties in 2 ms.
Initial state reduction rules removed 3 formulas.
FORMULA Philosophers-COL-000500-LTLFireability-03 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Philosophers-COL-000500-LTLFireability-07 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA Philosophers-COL-000500-LTLFireability-13 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Computed a total of 0 stabilizing places and 0 stable transitions
Remains 3 properties that can be checked using skeleton over-approximation.
Computed a total of 0 stabilizing places and 0 stable transitions
Incomplete random walk after 10039 steps, including 19 resets, run finished after 23 ms. (steps per millisecond=436 ) properties (out of 3) seen :2
Finished Best-First random walk after 7 steps, including 0 resets, run visited all 1 properties in 1 ms. (steps per millisecond=7 )
[2023-03-22 02:37:49] [INFO ] Flatten gal took : 15 ms
[2023-03-22 02:37:49] [INFO ] Flatten gal took : 2 ms
Arc [1:1*[(MOD (ADD (MOD (MINUS $x 1) 500) 500) 500)]] contains successor/predecessor on variables of sort Philo
[2023-03-22 02:37:49] [INFO ] Unfolded HLPN to a Petri net with 2500 places and 2500 transitions 8000 arcs in 49 ms.
[2023-03-22 02:37:49] [INFO ] Unfolded 13 HLPN properties in 4 ms.
Support contains 2500 out of 2500 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 2500/2500 places, 2500/2500 transitions.
Applied a total of 0 rules in 31 ms. Remains 2500 /2500 variables (removed 0) and now considering 2500/2500 (removed 0) transitions.
// Phase 1: matrix 2500 rows 2500 cols
[2023-03-22 02:37:50] [INFO ] Computed 1000 place invariants in 67 ms
[2023-03-22 02:37:51] [INFO ] Implicit Places using invariants in 697 ms returned []
[2023-03-22 02:37:51] [INFO ] Invariant cache hit.
[2023-03-22 02:37:53] [INFO ] Implicit Places using invariants and state equation in 1797 ms returned []
Implicit Place search using SMT with State Equation took 2539 ms to find 0 implicit places.
[2023-03-22 02:37:53] [INFO ] Invariant cache hit.
[2023-03-22 02:37:56] [INFO ] Dead Transitions using invariants and state equation in 3521 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 6095 ms. Remains : 2500/2500 places, 2500/2500 transitions.
Support contains 2500 out of 2500 places after structural reductions.
[2023-03-22 02:37:57] [INFO ] Flatten gal took : 403 ms
[2023-03-22 02:37:58] [INFO ] Flatten gal took : 275 ms
[2023-03-22 02:37:59] [INFO ] Input system was already deterministic with 2500 transitions.
Incomplete random walk after 10000 steps, including 2 resets, run finished after 842 ms. (steps per millisecond=11 ) properties (out of 11) seen :6
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 1121 ms. (steps per millisecond=8 ) properties (out of 5) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 1091 ms. (steps per millisecond=9 ) properties (out of 5) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 1104 ms. (steps per millisecond=9 ) properties (out of 5) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 1387 ms. (steps per millisecond=7 ) properties (out of 5) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 1377 ms. (steps per millisecond=7 ) properties (out of 5) seen :0
Running SMT prover for 5 properties.
[2023-03-22 02:38:06] [INFO ] Invariant cache hit.
[2023-03-22 02:38:10] [INFO ] [Real]Absence check using 1000 positive place invariants in 246 ms returned sat
[2023-03-22 02:38:10] [INFO ] After 1333ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:5
[2023-03-22 02:38:11] [INFO ] [Nat]Absence check using 1000 positive place invariants in 229 ms returned sat
[2023-03-22 02:38:16] [INFO ] After 3296ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :5
[2023-03-22 02:38:18] [INFO ] After 5476ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :5
Attempting to minimize the solution found.
Minimization took 1816 ms.
[2023-03-22 02:38:20] [INFO ] After 9392ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :5
Fused 5 Parikh solutions to 1 different solutions.
Finished Parikh walk after 500 steps, including 0 resets, run visited all 5 properties in 75 ms. (steps per millisecond=6 )
Parikh walk visited 5 properties in 78 ms.
FORMULA Philosophers-COL-000500-LTLFireability-06 FALSE TECHNIQUES REACHABILITY_KNOWLEDGE
Computed a total of 0 stabilizing places and 0 stable transitions
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202303021504/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!((!p0 U (X(p1) U (p1&&G(F(p2))))))'
Support contains 2000 out of 2500 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 2500/2500 places, 2500/2500 transitions.
Applied a total of 0 rules in 51 ms. Remains 2500 /2500 variables (removed 0) and now considering 2500/2500 (removed 0) transitions.
[2023-03-22 02:38:20] [INFO ] Invariant cache hit.
[2023-03-22 02:38:22] [INFO ] Implicit Places using invariants in 1162 ms returned []
[2023-03-22 02:38:22] [INFO ] Invariant cache hit.
[2023-03-22 02:38:24] [INFO ] Implicit Places using invariants and state equation in 2221 ms returned []
Implicit Place search using SMT with State Equation took 3391 ms to find 0 implicit places.
[2023-03-22 02:38:24] [INFO ] Invariant cache hit.
[2023-03-22 02:38:27] [INFO ] Dead Transitions using invariants and state equation in 3222 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 6683 ms. Remains : 2500/2500 places, 2500/2500 transitions.
Stuttering acceptance computed with spot in 391 ms :[(OR (NOT p1) (NOT p2)), (OR (NOT p1) (NOT p2)), (NOT p2), (NOT p2), true]
Running random walk in product with property : Philosophers-COL-000500-LTLFireability-00 automaton TGBA Formula[mat=[[{ cond=(AND (NOT p1) (NOT p0)), acceptance={0} source=0 dest: 0}, { cond=(AND (NOT p1) p0), acceptance={} source=0 dest: 1}, { cond=(AND p1 (NOT p2)), acceptance={} source=0 dest: 2}, { cond=p1, acceptance={} source=0 dest: 3}], [{ cond=(AND p1 (NOT p2)), acceptance={} source=1 dest: 2}, { cond=p1, acceptance={} source=1 dest: 3}, { cond=(NOT p1), acceptance={} source=1 dest: 4}], [{ cond=(NOT p2), acceptance={0} source=2 dest: 2}], [{ cond=(NOT p2), acceptance={} source=3 dest: 2}, { cond=true, acceptance={} source=3 dest: 3}], [{ cond=true, acceptance={0} source=4 dest: 4}]], initial=0, aps=[p1:(OR (AND (GEQ s848 1) (GEQ s1348 1)) (AND (GEQ s552 1) (GEQ s1052 1)) (AND (GEQ s557 1) (GEQ s1057 1)) (AND (GEQ s853 1) (GEQ s1353 1)) (AND (GEQ s838 ...], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, no-univ-branch, stutter-sensitive], stateDesc=[null, null, null, null, null][false, false, false, false, false]]
Entered a terminal (fully accepting) state of product in 36 steps with 1 reset in 21 ms.
FORMULA Philosophers-COL-000500-LTLFireability-00 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Philosophers-COL-000500-LTLFireability-00 finished in 7202 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(F(p0))))'
Support contains 1000 out of 2500 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 2500/2500 places, 2500/2500 transitions.
Applied a total of 0 rules in 157 ms. Remains 2500 /2500 variables (removed 0) and now considering 2500/2500 (removed 0) transitions.
[2023-03-22 02:38:28] [INFO ] Invariant cache hit.
[2023-03-22 02:38:29] [INFO ] Implicit Places using invariants in 1208 ms returned []
[2023-03-22 02:38:29] [INFO ] Invariant cache hit.
[2023-03-22 02:38:31] [INFO ] Implicit Places using invariants and state equation in 2455 ms returned []
Implicit Place search using SMT with State Equation took 3666 ms to find 0 implicit places.
[2023-03-22 02:38:31] [INFO ] Invariant cache hit.
[2023-03-22 02:38:35] [INFO ] Dead Transitions using invariants and state equation in 3328 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 7161 ms. Remains : 2500/2500 places, 2500/2500 transitions.
Stuttering acceptance computed with spot in 145 ms :[(NOT p0), (NOT p0), (NOT p0)]
Running random walk in product with property : Philosophers-COL-000500-LTLFireability-01 automaton TGBA Formula[mat=[[{ cond=(NOT p0), acceptance={0} source=0 dest: 0}], [{ cond=true, acceptance={} source=1 dest: 0}], [{ cond=true, acceptance={} source=2 dest: 1}]], initial=2, aps=[p0:(AND (OR (LT s603 1) (LT s1604 1)) (OR (LT s598 1) (LT s1599 1)) (OR (LT s894 1) (LT s1895 1)) (OR (LT s899 1) (LT s1900 1)) (OR (LT s588 1) (LT s1589 ...], 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]]
Product exploration explored 100000 steps with 8 reset in 3114 ms.
Stack based approach found an accepted trace after 3097 steps with 0 reset with depth 3098 and stack size 3098 in 166 ms.
FORMULA Philosophers-COL-000500-LTLFireability-01 FALSE TECHNIQUES STACK_TEST
Treatment of property Philosophers-COL-000500-LTLFireability-01 finished in 10626 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((G(F(!p0))||(F(!p0)&&X(p0))))))'
Support contains 1000 out of 2500 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 2500/2500 places, 2500/2500 transitions.
Applied a total of 0 rules in 291 ms. Remains 2500 /2500 variables (removed 0) and now considering 2500/2500 (removed 0) transitions.
[2023-03-22 02:38:38] [INFO ] Invariant cache hit.
[2023-03-22 02:38:40] [INFO ] Implicit Places using invariants in 1158 ms returned []
[2023-03-22 02:38:40] [INFO ] Invariant cache hit.
[2023-03-22 02:38:42] [INFO ] Implicit Places using invariants and state equation in 2468 ms returned []
Implicit Place search using SMT with State Equation took 3661 ms to find 0 implicit places.
[2023-03-22 02:38:42] [INFO ] Invariant cache hit.
[2023-03-22 02:38:45] [INFO ] Dead Transitions using invariants and state equation in 3408 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 7380 ms. Remains : 2500/2500 places, 2500/2500 transitions.
Stuttering acceptance computed with spot in 138 ms :[p0, p0]
Running random walk in product with property : Philosophers-COL-000500-LTLFireability-02 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 1}], [{ cond=p0, acceptance={0} source=1 dest: 1}]], initial=0, aps=[p0:(OR (AND (GEQ s261 1) (GEQ s761 1)) (AND (GEQ s256 1) (GEQ s756 1)) (AND (GEQ s246 1) (GEQ s746 1)) (AND (GEQ s266 1) (GEQ s766 1)) (AND (GEQ s276 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 10 reset in 3383 ms.
Stack based approach found an accepted trace after 731 steps with 0 reset with depth 732 and stack size 732 in 68 ms.
FORMULA Philosophers-COL-000500-LTLFireability-02 FALSE TECHNIQUES STACK_TEST
Treatment of property Philosophers-COL-000500-LTLFireability-02 finished in 11009 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((F(p2)||p1))||p0)))'
Support contains 2000 out of 2500 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 2500/2500 places, 2500/2500 transitions.
Applied a total of 0 rules in 16 ms. Remains 2500 /2500 variables (removed 0) and now considering 2500/2500 (removed 0) transitions.
[2023-03-22 02:38:49] [INFO ] Invariant cache hit.
[2023-03-22 02:38:50] [INFO ] Implicit Places using invariants in 546 ms returned []
[2023-03-22 02:38:50] [INFO ] Invariant cache hit.
[2023-03-22 02:38:51] [INFO ] Implicit Places using invariants and state equation in 1519 ms returned []
Implicit Place search using SMT with State Equation took 2095 ms to find 0 implicit places.
[2023-03-22 02:38:51] [INFO ] Invariant cache hit.
[2023-03-22 02:38:54] [INFO ] Dead Transitions using invariants and state equation in 3200 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 5325 ms. Remains : 2500/2500 places, 2500/2500 transitions.
Stuttering acceptance computed with spot in 214 ms :[(AND (NOT p0) (NOT p2) (NOT p1)), (AND (NOT p0) (NOT p2) (NOT p1)), (NOT p2), (AND (NOT p2) (NOT p1))]
Running random walk in product with property : Philosophers-COL-000500-LTLFireability-04 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 1}], [{ cond=(NOT p0), acceptance={} source=1 dest: 3}], [{ cond=(NOT p2), acceptance={0} source=2 dest: 2}], [{ cond=(AND (NOT p1) (NOT p2)), acceptance={} source=3 dest: 2}]], initial=0, aps=[p0:(OR (AND (GEQ s848 1) (GEQ s1348 1)) (AND (GEQ s552 1) (GEQ s1052 1)) (AND (GEQ s557 1) (GEQ s1057 1)) (AND (GEQ s853 1) (GEQ s1353 1)) (AND (GEQ s838 ...], 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]]
Product exploration timeout after 77440 steps with 30953 reset in 10001 ms.
Product exploration timeout after 75630 steps with 30290 reset in 10001 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) p2 (NOT p1))]
False Knowledge obtained : [(X (NOT p0)), (X p0), (X (X (AND (NOT p1) (NOT p2)))), (X (X (NOT (AND (NOT p1) (NOT p2)))))]
Knowledge based reduction with 1 factoid took 187 ms. Reduced automaton from 4 states, 4 edges and 3 AP (stutter sensitive) to 4 states, 4 edges and 3 AP (stutter sensitive).
Stuttering acceptance computed with spot in 212 ms :[(AND (NOT p0) (NOT p2) (NOT p1)), (AND (NOT p0) (NOT p2) (NOT p1)), (NOT p2), (AND (NOT p2) (NOT p1))]
Finished random walk after 1 steps, including 0 resets, run visited all 3 properties in 2 ms. (steps per millisecond=0 )
Knowledge obtained : [(AND (NOT p0) p2 (NOT p1))]
False Knowledge obtained : [(X (NOT p0)), (X p0), (X (X (AND (NOT p1) (NOT p2)))), (X (X (NOT (AND (NOT p1) (NOT p2))))), (F p0), (F (AND (NOT p1) (NOT p2))), (F (NOT p2))]
Knowledge based reduction with 1 factoid took 415 ms. Reduced automaton from 4 states, 4 edges and 3 AP (stutter sensitive) to 4 states, 4 edges and 3 AP (stutter sensitive).
Stuttering acceptance computed with spot in 223 ms :[(AND (NOT p0) (NOT p2) (NOT p1)), (AND (NOT p0) (NOT p2) (NOT p1)), (NOT p2), (AND (NOT p2) (NOT p1))]
Stuttering acceptance computed with spot in 162 ms :[(AND (NOT p0) (NOT p2) (NOT p1)), (AND (NOT p0) (NOT p2) (NOT p1)), (NOT p2), (AND (NOT p2) (NOT p1))]
Support contains 2000 out of 2500 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 2500/2500 places, 2500/2500 transitions.
Applied a total of 0 rules in 13 ms. Remains 2500 /2500 variables (removed 0) and now considering 2500/2500 (removed 0) transitions.
[2023-03-22 02:39:36] [INFO ] Invariant cache hit.
[2023-03-22 02:39:36] [INFO ] Implicit Places using invariants in 574 ms returned []
[2023-03-22 02:39:36] [INFO ] Invariant cache hit.
[2023-03-22 02:39:38] [INFO ] Implicit Places using invariants and state equation in 1609 ms returned []
Implicit Place search using SMT with State Equation took 2209 ms to find 0 implicit places.
[2023-03-22 02:39:38] [INFO ] Invariant cache hit.
[2023-03-22 02:39:41] [INFO ] Dead Transitions using invariants and state equation in 3233 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 5458 ms. Remains : 2500/2500 places, 2500/2500 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) p2 (NOT p1))]
False Knowledge obtained : [(X (NOT p0)), (X p0), (X (X (AND (NOT p1) (NOT p2)))), (X (X (NOT (AND (NOT p1) (NOT p2)))))]
Knowledge based reduction with 1 factoid took 149 ms. Reduced automaton from 4 states, 4 edges and 3 AP (stutter sensitive) to 4 states, 4 edges and 3 AP (stutter sensitive).
Stuttering acceptance computed with spot in 137 ms :[(AND (NOT p0) (NOT p2) (NOT p1)), (AND (NOT p0) (NOT p2) (NOT p1)), (NOT p2), (AND (NOT p2) (NOT p1))]
Finished random walk after 1 steps, including 0 resets, run visited all 3 properties in 2 ms. (steps per millisecond=0 )
Knowledge obtained : [(AND (NOT p0) p2 (NOT p1))]
False Knowledge obtained : [(X (NOT p0)), (X p0), (X (X (AND (NOT p1) (NOT p2)))), (X (X (NOT (AND (NOT p1) (NOT p2))))), (F p0), (F (AND (NOT p1) (NOT p2))), (F (NOT p2))]
Knowledge based reduction with 1 factoid took 211 ms. Reduced automaton from 4 states, 4 edges and 3 AP (stutter sensitive) to 4 states, 4 edges and 3 AP (stutter sensitive).
Stuttering acceptance computed with spot in 137 ms :[(AND (NOT p0) (NOT p2) (NOT p1)), (AND (NOT p0) (NOT p2) (NOT p1)), (NOT p2), (AND (NOT p2) (NOT p1))]
Stuttering acceptance computed with spot in 153 ms :[(AND (NOT p0) (NOT p2) (NOT p1)), (AND (NOT p0) (NOT p2) (NOT p1)), (NOT p2), (AND (NOT p2) (NOT p1))]
Stuttering acceptance computed with spot in 228 ms :[(AND (NOT p0) (NOT p2) (NOT p1)), (AND (NOT p0) (NOT p2) (NOT p1)), (NOT p2), (AND (NOT p2) (NOT p1))]
Product exploration timeout after 79750 steps with 32003 reset in 10001 ms.
Product exploration timeout after 76490 steps with 30621 reset in 10007 ms.
Applying partial POR strategy [false, false, true, true]
Stuttering acceptance computed with spot in 158 ms :[(AND (NOT p0) (NOT p2) (NOT p1)), (AND (NOT p0) (NOT p2) (NOT p1)), (NOT p2), (AND (NOT p2) (NOT p1))]
Support contains 2000 out of 2500 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 2500/2500 places, 2500/2500 transitions.
Applied a total of 0 rules in 104 ms. Remains 2500 /2500 variables (removed 0) and now considering 2500/2500 (removed 0) transitions.
[2023-03-22 02:40:23] [INFO ] Redundant transitions in 205 ms returned []
[2023-03-22 02:40:23] [INFO ] Invariant cache hit.
[2023-03-22 02:40:26] [INFO ] Dead Transitions using invariants and state equation in 3245 ms found 0 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 3591 ms. Remains : 2500/2500 places, 2500/2500 transitions.
Support contains 2000 out of 2500 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 2500/2500 places, 2500/2500 transitions.
Applied a total of 0 rules in 21 ms. Remains 2500 /2500 variables (removed 0) and now considering 2500/2500 (removed 0) transitions.
[2023-03-22 02:40:26] [INFO ] Invariant cache hit.
[2023-03-22 02:40:26] [INFO ] Implicit Places using invariants in 586 ms returned []
[2023-03-22 02:40:26] [INFO ] Invariant cache hit.
[2023-03-22 02:40:28] [INFO ] Implicit Places using invariants and state equation in 1596 ms returned []
Implicit Place search using SMT with State Equation took 2197 ms to find 0 implicit places.
[2023-03-22 02:40:28] [INFO ] Invariant cache hit.
[2023-03-22 02:40:31] [INFO ] Dead Transitions using invariants and state equation in 3171 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 5406 ms. Remains : 2500/2500 places, 2500/2500 transitions.
Treatment of property Philosophers-COL-000500-LTLFireability-04 finished in 102654 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((F(G(p0))&&(G(p2)||p1))))'
Support contains 1500 out of 2500 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 2500/2500 places, 2500/2500 transitions.
Applied a total of 0 rules in 88 ms. Remains 2500 /2500 variables (removed 0) and now considering 2500/2500 (removed 0) transitions.
[2023-03-22 02:40:32] [INFO ] Invariant cache hit.
[2023-03-22 02:40:33] [INFO ] Implicit Places using invariants in 1215 ms returned []
[2023-03-22 02:40:33] [INFO ] Invariant cache hit.
[2023-03-22 02:40:35] [INFO ] Implicit Places using invariants and state equation in 2333 ms returned []
Implicit Place search using SMT with State Equation took 3577 ms to find 0 implicit places.
[2023-03-22 02:40:36] [INFO ] Redundant transitions in 136 ms returned []
[2023-03-22 02:40:36] [INFO ] Invariant cache hit.
[2023-03-22 02:40:39] [INFO ] Dead Transitions using invariants and state equation in 3215 ms found 0 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 7042 ms. Remains : 2500/2500 places, 2500/2500 transitions.
Stuttering acceptance computed with spot in 109 ms :[(OR (NOT p0) (AND (NOT p1) (NOT p2))), (NOT p0), (AND (NOT p1) (NOT p2))]
Running random walk in product with property : Philosophers-COL-000500-LTLFireability-05 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 1}, { cond=(NOT p1), acceptance={} source=0 dest: 2}], [{ cond=p0, acceptance={} source=1 dest: 1}, { cond=(NOT p0), acceptance={0} source=1 dest: 1}], [{ cond=(AND (NOT p1) p2), acceptance={} source=2 dest: 2}, { cond=(AND (NOT p1) (NOT p2)), acceptance={0} source=2 dest: 2}]], initial=0, aps=[p1:(OR (AND (GEQ s171 1) (GEQ s670 1)) (AND (GEQ s467 1) (GEQ s966 1)) (AND (GEQ s181 1) (GEQ s680 1)) (AND (GEQ s477 1) (GEQ s976 1)) (AND (GEQ s161 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 0 reset in 2715 ms.
Stack based approach found an accepted trace after 4474 steps with 0 reset with depth 4475 and stack size 4475 in 200 ms.
FORMULA Philosophers-COL-000500-LTLFireability-05 FALSE TECHNIQUES STACK_TEST
Treatment of property Philosophers-COL-000500-LTLFireability-05 finished in 10101 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(G((!p1&&X(p0))))))))'
Support contains 1500 out of 2500 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 2500/2500 places, 2500/2500 transitions.
Applied a total of 0 rules in 31 ms. Remains 2500 /2500 variables (removed 0) and now considering 2500/2500 (removed 0) transitions.
[2023-03-22 02:40:42] [INFO ] Invariant cache hit.
[2023-03-22 02:40:43] [INFO ] Implicit Places using invariants in 924 ms returned []
[2023-03-22 02:40:43] [INFO ] Invariant cache hit.
[2023-03-22 02:40:45] [INFO ] Implicit Places using invariants and state equation in 2183 ms returned []
Implicit Place search using SMT with State Equation took 3121 ms to find 0 implicit places.
[2023-03-22 02:40:45] [INFO ] Invariant cache hit.
[2023-03-22 02:40:48] [INFO ] Dead Transitions using invariants and state equation in 3291 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 6453 ms. Remains : 2500/2500 places, 2500/2500 transitions.
Stuttering acceptance computed with spot in 158 ms :[true, (AND p1 p0), (OR (NOT p0) p1), (OR (NOT p0) p1), (OR (NOT p0) p1)]
Running random walk in product with property : Philosophers-COL-000500-LTLFireability-08 automaton TGBA Formula[mat=[[{ cond=true, acceptance={0} source=0 dest: 0}], [{ cond=(NOT p0), acceptance={} source=1 dest: 1}, { cond=p0, acceptance={} source=1 dest: 2}], [{ cond=true, acceptance={} source=2 dest: 3}], [{ cond=p1, acceptance={} source=3 dest: 0}, { cond=(NOT p1), acceptance={} source=3 dest: 4}], [{ cond=(OR (NOT p0) p1), acceptance={} source=4 dest: 0}, { cond=(AND p0 (NOT p1)), acceptance={} source=4 dest: 4}]], initial=1, aps=[p0:(OR (AND (GEQ s261 1) (GEQ s761 1)) (AND (GEQ s256 1) (GEQ s756 1)) (AND (GEQ s246 1) (GEQ s746 1)) (AND (GEQ s266 1) (GEQ s766 1)) (AND (GEQ s276 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, null][false, false, false, false, false]]
Entered a terminal (fully accepting) state of product in 2 steps with 0 reset in 1 ms.
FORMULA Philosophers-COL-000500-LTLFireability-08 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Philosophers-COL-000500-LTLFireability-08 finished in 6661 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(G(p0))&&F((p1||G(!p0))))))'
Support contains 1500 out of 2500 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 2500/2500 places, 2500/2500 transitions.
Applied a total of 0 rules in 99 ms. Remains 2500 /2500 variables (removed 0) and now considering 2500/2500 (removed 0) transitions.
[2023-03-22 02:40:49] [INFO ] Invariant cache hit.
[2023-03-22 02:40:50] [INFO ] Implicit Places using invariants in 1186 ms returned []
[2023-03-22 02:40:50] [INFO ] Invariant cache hit.
[2023-03-22 02:40:52] [INFO ] Implicit Places using invariants and state equation in 2630 ms returned []
Implicit Place search using SMT with State Equation took 3834 ms to find 0 implicit places.
[2023-03-22 02:40:53] [INFO ] Redundant transitions in 74 ms returned []
[2023-03-22 02:40:53] [INFO ] Invariant cache hit.
[2023-03-22 02:40:56] [INFO ] Dead Transitions using invariants and state equation in 3246 ms found 0 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 7280 ms. Remains : 2500/2500 places, 2500/2500 transitions.
Stuttering acceptance computed with spot in 118 ms :[(OR (NOT p0) (NOT p1)), (NOT p0), (AND p0 (NOT p1))]
Running random walk in product with property : Philosophers-COL-000500-LTLFireability-09 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 0}, { cond=(NOT p0), acceptance={} source=0 dest: 1}, { cond=(AND p0 (NOT p1)), acceptance={} source=0 dest: 2}], [{ cond=p0, acceptance={} source=1 dest: 1}, { cond=(NOT p0), acceptance={0} source=1 dest: 1}], [{ cond=(AND (NOT p0) (NOT p1)), acceptance={} source=2 dest: 2}, { cond=(AND p0 (NOT p1)), acceptance={0} source=2 dest: 2}]], initial=0, aps=[p0:(OR (GEQ s2211 1) (GEQ s2471 1) (GEQ s2276 1) (GEQ s2406 1) (GEQ s2341 1) (GEQ s2000 1) (GEQ s2130 1) (GEQ s2065 1) (GEQ s2162 1) (GEQ s2227 1) (GEQ s2...], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, no-univ-branch, stutter-invariant], stateDesc=[null, null, null][true, true, true]]
Stuttering criterion allowed to conclude after 80396 steps with 0 reset in 1799 ms.
FORMULA Philosophers-COL-000500-LTLFireability-09 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Philosophers-COL-000500-LTLFireability-09 finished in 9220 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(X(p1))))'
Support contains 1500 out of 2500 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 2500/2500 places, 2500/2500 transitions.
Applied a total of 0 rules in 24 ms. Remains 2500 /2500 variables (removed 0) and now considering 2500/2500 (removed 0) transitions.
[2023-03-22 02:40:58] [INFO ] Invariant cache hit.
[2023-03-22 02:40:59] [INFO ] Implicit Places using invariants in 778 ms returned []
[2023-03-22 02:40:59] [INFO ] Invariant cache hit.
[2023-03-22 02:41:01] [INFO ] Implicit Places using invariants and state equation in 2008 ms returned []
Implicit Place search using SMT with State Equation took 2812 ms to find 0 implicit places.
[2023-03-22 02:41:01] [INFO ] Invariant cache hit.
[2023-03-22 02:41:04] [INFO ] Dead Transitions using invariants and state equation in 3266 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 6124 ms. Remains : 2500/2500 places, 2500/2500 transitions.
Stuttering acceptance computed with spot in 330 ms :[(NOT p1), (NOT p1), (NOT p1), true, (NOT p1), (NOT p1), (NOT p1)]
Running random walk in product with property : Philosophers-COL-000500-LTLFireability-10 automaton TGBA Formula[mat=[[{ cond=(NOT p1), acceptance={} source=0 dest: 3}], [{ cond=true, acceptance={} source=1 dest: 0}], [{ cond=(NOT p0), acceptance={} source=2 dest: 5}, { cond=p0, acceptance={} source=2 dest: 6}], [{ cond=true, acceptance={0} source=3 dest: 3}], [{ cond=(NOT p0), acceptance={} source=4 dest: 1}, { cond=p0, acceptance={} source=4 dest: 2}], [{ cond=(NOT p1), acceptance={} source=5 dest: 0}], [{ cond=(AND (NOT p0) (NOT p1)), acceptance={0} source=6 dest: 5}, { cond=(AND p0 (NOT p1)), acceptance={0} source=6 dest: 6}]], initial=4, aps=[p1:(OR (AND (GEQ s848 1) (GEQ s1348 1)) (AND (GEQ s552 1) (GEQ s1052 1)) (AND (GEQ s557 1) (GEQ s1057 1)) (AND (GEQ s853 1) (GEQ s1353 1)) (AND (GEQ s838 ...], 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, null, null, null][false, false, false, false, false, false, false]]
Product exploration timeout after 76180 steps with 21739 reset in 10003 ms.
Product exploration timeout after 73780 steps with 21080 reset in 10002 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 p1) p0), (X p0), (X (X (NOT (AND (NOT p0) (NOT p1)))))]
False Knowledge obtained : [(X (X (NOT p1))), (X (X p1)), (X (X (AND p0 (NOT p1)))), (X (X (NOT (AND p0 (NOT p1)))))]
Knowledge based reduction with 3 factoid took 230 ms. Reduced automaton from 7 states, 10 edges and 2 AP (stutter sensitive) to 6 states, 7 edges and 2 AP (stutter sensitive).
Stuttering acceptance computed with spot in 205 ms :[(NOT p1), (NOT p1), true, (NOT p1), (NOT p1), (NOT p1)]
Incomplete random walk after 10000 steps, including 2 resets, run finished after 485 ms. (steps per millisecond=20 ) properties (out of 3) seen :2
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 1973 ms. (steps per millisecond=5 ) properties (out of 1) seen :0
Running SMT prover for 1 properties.
[2023-03-22 02:41:47] [INFO ] Invariant cache hit.
[2023-03-22 02:41:48] [INFO ] [Real]Absence check using 1000 positive place invariants in 223 ms returned sat
[2023-03-22 02:41:48] [INFO ] After 677ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
[2023-03-22 02:41:49] [INFO ] [Nat]Absence check using 1000 positive place invariants in 230 ms returned sat
[2023-03-22 02:41:50] [INFO ] After 1280ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2023-03-22 02:41:50] [INFO ] After 1498ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
Attempting to minimize the solution found.
Minimization took 136 ms.
[2023-03-22 02:41:50] [INFO ] After 2267ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
Finished Parikh walk after 500 steps, including 0 resets, run visited all 1 properties in 37 ms. (steps per millisecond=13 )
Parikh walk visited 1 properties in 38 ms.
Knowledge obtained : [(AND (NOT p1) p0), (X p0), (X (X (NOT (AND (NOT p0) (NOT p1)))))]
False Knowledge obtained : [(X (X (NOT p1))), (X (X p1)), (X (X (AND p0 (NOT p1)))), (X (X (NOT (AND p0 (NOT p1))))), (F p1), (F (NOT (AND p0 (NOT p1)))), (F (AND (NOT p0) (NOT p1)))]
Knowledge based reduction with 3 factoid took 343 ms. Reduced automaton from 6 states, 7 edges and 2 AP (stutter sensitive) to 6 states, 7 edges and 2 AP (stutter sensitive).
Stuttering acceptance computed with spot in 215 ms :[(NOT p1), (NOT p1), true, (NOT p1), (NOT p1), (NOT p1)]
Stuttering acceptance computed with spot in 209 ms :[(NOT p1), (NOT p1), true, (NOT p1), (NOT p1), (NOT p1)]
[2023-03-22 02:41:52] [INFO ] Invariant cache hit.
Could not prove EG (NOT p1)
Support contains 1500 out of 2500 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 2500/2500 places, 2500/2500 transitions.
Applied a total of 0 rules in 25 ms. Remains 2500 /2500 variables (removed 0) and now considering 2500/2500 (removed 0) transitions.
[2023-03-22 02:42:07] [INFO ] Invariant cache hit.
[2023-03-22 02:42:08] [INFO ] Implicit Places using invariants in 819 ms returned []
[2023-03-22 02:42:08] [INFO ] Invariant cache hit.
[2023-03-22 02:42:10] [INFO ] Implicit Places using invariants and state equation in 2216 ms returned []
Implicit Place search using SMT with State Equation took 3038 ms to find 0 implicit places.
[2023-03-22 02:42:10] [INFO ] Invariant cache hit.
[2023-03-22 02:42:13] [INFO ] Dead Transitions using invariants and state equation in 3396 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 6462 ms. Remains : 2500/2500 places, 2500/2500 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 p1) p0), (X (X (NOT (AND (NOT p0) (NOT p1)))))]
False Knowledge obtained : [(X (X (AND p0 (NOT p1)))), (X (X (NOT (AND p0 (NOT p1)))))]
Knowledge based reduction with 2 factoid took 148 ms. Reduced automaton from 6 states, 7 edges and 2 AP (stutter sensitive) to 6 states, 7 edges and 2 AP (stutter sensitive).
Stuttering acceptance computed with spot in 231 ms :[(NOT p1), (NOT p1), true, (NOT p1), (NOT p1), (NOT p1)]
Incomplete random walk after 10000 steps, including 2 resets, run finished after 473 ms. (steps per millisecond=21 ) properties (out of 3) seen :2
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 1974 ms. (steps per millisecond=5 ) properties (out of 1) seen :0
Running SMT prover for 1 properties.
[2023-03-22 02:42:37] [INFO ] Invariant cache hit.
[2023-03-22 02:42:38] [INFO ] [Real]Absence check using 1000 positive place invariants in 224 ms returned sat
[2023-03-22 02:42:38] [INFO ] After 655ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
[2023-03-22 02:42:39] [INFO ] [Nat]Absence check using 1000 positive place invariants in 219 ms returned sat
[2023-03-22 02:42:40] [INFO ] After 1329ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2023-03-22 02:42:40] [INFO ] After 1511ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
Attempting to minimize the solution found.
Minimization took 118 ms.
[2023-03-22 02:42:41] [INFO ] After 2262ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
Finished Parikh walk after 500 steps, including 0 resets, run visited all 1 properties in 35 ms. (steps per millisecond=14 )
Parikh walk visited 1 properties in 36 ms.
Knowledge obtained : [(AND (NOT p1) p0), (X (X (NOT (AND (NOT p0) (NOT p1)))))]
False Knowledge obtained : [(X (X (AND p0 (NOT p1)))), (X (X (NOT (AND p0 (NOT p1))))), (F p1), (F (NOT (AND p0 (NOT p1)))), (F (AND (NOT p0) (NOT p1)))]
Knowledge based reduction with 2 factoid took 206 ms. Reduced automaton from 6 states, 7 edges and 2 AP (stutter sensitive) to 6 states, 7 edges and 2 AP (stutter sensitive).
Stuttering acceptance computed with spot in 207 ms :[(NOT p1), (NOT p1), true, (NOT p1), (NOT p1), (NOT p1)]
Stuttering acceptance computed with spot in 221 ms :[(NOT p1), (NOT p1), true, (NOT p1), (NOT p1), (NOT p1)]
[2023-03-22 02:42:42] [INFO ] Invariant cache hit.
Could not prove EG (NOT p1)
Stuttering acceptance computed with spot in 237 ms :[(NOT p1), (NOT p1), true, (NOT p1), (NOT p1), (NOT p1)]
Product exploration timeout after 76160 steps with 21698 reset in 10002 ms.
Product exploration timeout after 73360 steps with 20891 reset in 10001 ms.
Applying partial POR strategy [false, true, true, false, false, false]
Stuttering acceptance computed with spot in 210 ms :[(NOT p1), (NOT p1), true, (NOT p1), (NOT p1), (NOT p1)]
Support contains 1500 out of 2500 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 2500/2500 places, 2500/2500 transitions.
Applied a total of 0 rules in 50 ms. Remains 2500 /2500 variables (removed 0) and now considering 2500/2500 (removed 0) transitions.
[2023-03-22 02:43:18] [INFO ] Redundant transitions in 78 ms returned []
[2023-03-22 02:43:18] [INFO ] Invariant cache hit.
[2023-03-22 02:43:21] [INFO ] Dead Transitions using invariants and state equation in 3409 ms found 0 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 3551 ms. Remains : 2500/2500 places, 2500/2500 transitions.
Support contains 1500 out of 2500 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 2500/2500 places, 2500/2500 transitions.
Applied a total of 0 rules in 25 ms. Remains 2500 /2500 variables (removed 0) and now considering 2500/2500 (removed 0) transitions.
[2023-03-22 02:43:21] [INFO ] Invariant cache hit.
[2023-03-22 02:43:22] [INFO ] Implicit Places using invariants in 808 ms returned []
[2023-03-22 02:43:22] [INFO ] Invariant cache hit.
[2023-03-22 02:43:24] [INFO ] Implicit Places using invariants and state equation in 2056 ms returned []
Implicit Place search using SMT with State Equation took 2865 ms to find 0 implicit places.
[2023-03-22 02:43:24] [INFO ] Invariant cache hit.
[2023-03-22 02:43:27] [INFO ] Dead Transitions using invariants and state equation in 3197 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 6089 ms. Remains : 2500/2500 places, 2500/2500 transitions.
Treatment of property Philosophers-COL-000500-LTLFireability-10 finished in 149580 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(X(p0)) U (p0 U p1)))'
Support contains 1500 out of 2500 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 2500/2500 places, 2500/2500 transitions.
Applied a total of 0 rules in 23 ms. Remains 2500 /2500 variables (removed 0) and now considering 2500/2500 (removed 0) transitions.
[2023-03-22 02:43:27] [INFO ] Invariant cache hit.
[2023-03-22 02:43:28] [INFO ] Implicit Places using invariants in 854 ms returned []
[2023-03-22 02:43:28] [INFO ] Invariant cache hit.
[2023-03-22 02:43:30] [INFO ] Implicit Places using invariants and state equation in 2234 ms returned []
Implicit Place search using SMT with State Equation took 3090 ms to find 0 implicit places.
[2023-03-22 02:43:30] [INFO ] Invariant cache hit.
[2023-03-22 02:43:34] [INFO ] Dead Transitions using invariants and state equation in 3602 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 6717 ms. Remains : 2500/2500 places, 2500/2500 transitions.
Stuttering acceptance computed with spot in 192 ms :[true, p0, p1, (AND p0 p1), p1]
Running random walk in product with property : Philosophers-COL-000500-LTLFireability-11 automaton TGBA Formula[mat=[[{ cond=true, acceptance={0} source=0 dest: 0}], [{ cond=p0, acceptance={0} source=1 dest: 1}], [{ cond=p1, acceptance={} source=2 dest: 0}, { cond=(AND (NOT p0) (NOT p1)), acceptance={} source=2 dest: 3}, { cond=(AND p0 (NOT p1)), acceptance={} source=2 dest: 4}], [{ cond=(AND p0 p1), acceptance={} source=3 dest: 1}, { cond=(AND p0 (NOT p1)), acceptance={} source=3 dest: 3}], [{ cond=p1, acceptance={} source=4 dest: 0}, { cond=(AND p0 (NOT p1)), acceptance={} source=4 dest: 4}]], initial=2, aps=[p0:(OR (AND (GEQ s603 1) (GEQ s1604 1)) (AND (GEQ s598 1) (GEQ s1599 1)) (AND (GEQ s894 1) (GEQ s1895 1)) (AND (GEQ s899 1) (GEQ s1900 1)) (AND (GEQ s588 ...], 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, null][false, false, false, false, false]]
Product exploration explored 100000 steps with 8 reset in 2678 ms.
Stack based approach found an accepted trace after 6667 steps with 1 reset with depth 6666 and stack size 6666 in 269 ms.
FORMULA Philosophers-COL-000500-LTLFireability-11 FALSE TECHNIQUES STACK_TEST
Treatment of property Philosophers-COL-000500-LTLFireability-11 finished in 9899 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 p1)))'
Support contains 1500 out of 2500 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 2500/2500 places, 2500/2500 transitions.
Applied a total of 0 rules in 26 ms. Remains 2500 /2500 variables (removed 0) and now considering 2500/2500 (removed 0) transitions.
[2023-03-22 02:43:37] [INFO ] Invariant cache hit.
[2023-03-22 02:43:38] [INFO ] Implicit Places using invariants in 840 ms returned []
[2023-03-22 02:43:38] [INFO ] Invariant cache hit.
[2023-03-22 02:43:40] [INFO ] Implicit Places using invariants and state equation in 1995 ms returned []
Implicit Place search using SMT with State Equation took 2840 ms to find 0 implicit places.
[2023-03-22 02:43:40] [INFO ] Invariant cache hit.
[2023-03-22 02:43:44] [INFO ] Dead Transitions using invariants and state equation in 3649 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 6518 ms. Remains : 2500/2500 places, 2500/2500 transitions.
Stuttering acceptance computed with spot in 125 ms :[(NOT p1), (NOT p1), true]
Running random walk in product with property : Philosophers-COL-000500-LTLFireability-12 automaton TGBA Formula[mat=[[{ cond=(AND (NOT p1) (NOT p0)), acceptance={0} source=0 dest: 0}, { cond=(AND (NOT p1) p0), acceptance={0} source=0 dest: 2}], [{ cond=true, acceptance={} source=1 dest: 0}], [{ cond=true, acceptance={0} source=2 dest: 2}]], initial=1, aps=[p1:(AND (OR (LT s171 1) (LT s670 1)) (OR (LT s467 1) (LT s966 1)) (OR (LT s181 1) (LT s680 1)) (OR (LT s477 1) (LT s976 1)) (OR (LT s161 1) (LT s660 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]]
Entered a terminal (fully accepting) state of product in 23375 steps with 1 reset in 870 ms.
FORMULA Philosophers-COL-000500-LTLFireability-12 FALSE TECHNIQUES STUTTER_TEST
Treatment of property Philosophers-COL-000500-LTLFireability-12 finished in 7548 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||G(!p1)))))'
Support contains 1500 out of 2500 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 2500/2500 places, 2500/2500 transitions.
Applied a total of 0 rules in 28 ms. Remains 2500 /2500 variables (removed 0) and now considering 2500/2500 (removed 0) transitions.
[2023-03-22 02:43:45] [INFO ] Invariant cache hit.
[2023-03-22 02:43:46] [INFO ] Implicit Places using invariants in 1115 ms returned []
[2023-03-22 02:43:46] [INFO ] Invariant cache hit.
[2023-03-22 02:43:49] [INFO ] Implicit Places using invariants and state equation in 2654 ms returned []
Implicit Place search using SMT with State Equation took 3774 ms to find 0 implicit places.
[2023-03-22 02:43:49] [INFO ] Invariant cache hit.
[2023-03-22 02:43:52] [INFO ] Dead Transitions using invariants and state equation in 3310 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 7122 ms. Remains : 2500/2500 places, 2500/2500 transitions.
Stuttering acceptance computed with spot in 75 ms :[(AND p1 p0), (AND p1 p0)]
Running random walk in product with property : Philosophers-COL-000500-LTLFireability-14 automaton TGBA Formula[mat=[[{ cond=(AND (NOT p1) p0), acceptance={} source=0 dest: 0}, { cond=(AND p1 p0), acceptance={0} source=0 dest: 0}], [{ cond=true, acceptance={} source=1 dest: 0}]], initial=1, aps=[p1:(AND (OR (LT s171 1) (LT s670 1)) (OR (LT s467 1) (LT s966 1)) (OR (LT s181 1) (LT s680 1)) (OR (LT s477 1) (LT s976 1)) (OR (LT s161 1) (LT s660 1)) (...], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-sensitive], stateDesc=[null, null][false, false]]
Product exploration explored 100000 steps with 50000 reset in 9539 ms.
Product exploration explored 100000 steps with 50000 reset in 9959 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 p1) (NOT p0)), (X (NOT (AND (NOT p1) p0))), (X (NOT (AND p1 p0))), (X (X (NOT (AND p1 p0))))]
False Knowledge obtained : [(X (X (AND (NOT p1) p0))), (X (X (NOT (AND (NOT p1) p0))))]
Knowledge sufficient to adopt a stutter insensitive property.
Property proved to be true thanks to knowledge :(AND (NOT p1) (NOT p0))
Knowledge based reduction with 4 factoid took 220 ms. Reduced automaton from 2 states, 3 edges and 2 AP (stutter sensitive) to 1 states, 0 edges and 0 AP (stutter insensitive).
FORMULA Philosophers-COL-000500-LTLFireability-14 TRUE TECHNIQUES KNOWLEDGE
Treatment of property Philosophers-COL-000500-LTLFireability-14 finished in 46900 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 U X(!p0))))))'
Support contains 0 out of 2500 places. Attempting structural reductions.
Property had overlarge support with respect to TGBA, discarding it for now.
Starting structural reductions in SI_LTL mode, iteration 0 : 2500/2500 places, 2500/2500 transitions.
Applied a total of 0 rules in 47 ms. Remains 2500 /2500 variables (removed 0) and now considering 2500/2500 (removed 0) transitions.
[2023-03-22 02:44:32] [INFO ] Invariant cache hit.
[2023-03-22 02:44:33] [INFO ] Implicit Places using invariants in 1222 ms returned []
[2023-03-22 02:44:33] [INFO ] Invariant cache hit.
[2023-03-22 02:44:35] [INFO ] Implicit Places using invariants and state equation in 2528 ms returned []
Implicit Place search using SMT with State Equation took 3781 ms to find 0 implicit places.
[2023-03-22 02:44:36] [INFO ] Redundant transitions in 75 ms returned []
[2023-03-22 02:44:36] [INFO ] Invariant cache hit.
[2023-03-22 02:44:39] [INFO ] Dead Transitions using invariants and state equation in 3377 ms found 0 transitions.
Finished structural reductions in SI_LTL mode , in 1 iterations and 7306 ms. Remains : 2500/2500 places, 2500/2500 transitions.
Stuttering acceptance computed with spot in 13 ms :[false]
Running random walk in product with property : Philosophers-COL-000500-LTLFireability-15 automaton TGBA Formula[mat=[[]], initial=0, aps=[], nbAcceptance=0, properties=[trans-labels, explicit-labels, trans-acc, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-invariant, very-weak, weak, inherently-weak], stateDesc=[null][true]]
Initial state of product has no viable successors after 0 steps with 0 reset in 1 ms.
FORMULA Philosophers-COL-000500-LTLFireability-15 TRUE TECHNIQUES STUTTER_TEST
Treatment of property Philosophers-COL-000500-LTLFireability-15 finished in 7361 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((F(p2)||p1))||p0)))'
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(X(p1))))'
[2023-03-22 02:44:39] [INFO ] Flatten gal took : 146 ms
[2023-03-22 02:44:39] [INFO ] Export to MCC of 2 properties in file /home/mcc/execution/LTLFireability.sr.xml took 29 ms.
[2023-03-22 02:44:39] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml of net with 2500 places, 2500 transitions and 8000 arcs took 11 ms.
Total runtime 411591 ms.
There are residual formulas that ITS could not solve within timeout
pnml2lts-mc model.pnml -s80% --procs=4 --ltl=/tmp/1376/ltl_0_ --buchi-type=spotba --strategy=ufscc --ltl-semantics=spin --state=tree
pnml2lts-mc model.pnml -s80% --procs=4 --ltl=/tmp/1376/ltl_1_ --buchi-type=spotba --strategy=ufscc --ltl-semantics=spin --state=tree
TIME LIMIT: Killed by timeout after 1785 seconds
MemTotal: 16393216 kB
MemFree: 3844804 kB
After kill :
MemTotal: 16393216 kB
MemFree: 16113616 kB
Could not compute solution for formula : Philosophers-COL-000500-LTLFireability-04
Could not compute solution for formula : Philosophers-COL-000500-LTLFireability-10
BK_STOP 1679454868374
--------------------
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 Philosophers-COL-000500-LTLFireability-04
ltl formula formula --ltl=/tmp/1376/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 2500 places, 2500 transitions and 8000 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/1376/ltl_0_
pnml2lts-mc( 0/ 4): Loading Petri net took 0.780 real 0.100 user 0.090 sys
pnml2lts-mc( 0/ 4): LTL layer: formula: /tmp/1376/ltl_0_
pnml2lts-mc( 3/ 4): LTL layer: formula: /tmp/1376/ltl_0_
pnml2lts-mc( 2/ 4): LTL layer: formula: /tmp/1376/ltl_0_
pnml2lts-mc( 1/ 4), ** error **: stack overflow
pnml2lts-mc( 3/ 4), ** error **: stack overflow
pnml2lts-mc( 2/ 4), ** error **: stack overflow
ltl formula name Philosophers-COL-000500-LTLFireability-10
ltl formula formula --ltl=/tmp/1376/ltl_1_
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 2500 places, 2500 transitions and 8000 arcs
pnml2lts-mc( 0/ 4): Petri net Petri analyzed
pnml2lts-mc( 0/ 4): There are no safe places
pnml2lts-mc( 0/ 4): Loading Petri net took 0.290 real 0.100 user 0.060 sys
pnml2lts-mc( 2/ 4): LTL layer: formula: /tmp/1376/ltl_1_
pnml2lts-mc( 3/ 4): LTL layer: formula: /tmp/1376/ltl_1_
pnml2lts-mc( 0/ 4): LTL layer: formula: /tmp/1376/ltl_1_
pnml2lts-mc( 1/ 4): LTL layer: formula: /tmp/1376/ltl_1_
Killing (15) : 1388 1389 1390 1391 1392
Killing (9) : 1388 1389 1390 1391 1392
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="Philosophers-COL-000500"
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 Philosophers-COL-000500, 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 r297-tall-167873950000132"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/Philosophers-COL-000500.tgz
mv Philosophers-COL-000500 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 '
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 ;