fond
Model Checking Contest 2023
13th edition, Paris, France, April 26, 2023 (at TOOLympics II)
Execution of r521-tall-167987246700468
Last Updated
May 14, 2023

About the Execution of LTSMin+red for PGCD-PT-D04N025

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
740.436 11541.00 17764.00 259.80 FTFFFTTFFTFTFFTF 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.r521-tall-167987246700468.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2023-input.qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
...................................................................................................................
=====================================================================
Generated by BenchKit 2-5348
Executing tool ltsminxred
Input is PGCD-PT-D04N025, examination is LTLFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r521-tall-167987246700468
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 456K
-rw-r--r-- 1 mcc users 6.6K Mar 23 15:25 CTLCardinality.txt
-rw-r--r-- 1 mcc users 72K Mar 23 15:25 CTLCardinality.xml
-rw-r--r-- 1 mcc users 4.3K Mar 23 15:23 CTLFireability.txt
-rw-r--r-- 1 mcc users 37K Mar 23 15:23 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.6K Apr 7 12:03 LTLCardinality.txt
-rw-r--r-- 1 mcc users 25K Apr 7 12:03 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.1K Apr 7 12:03 LTLFireability.txt
-rw-r--r-- 1 mcc users 17K Apr 7 12:03 LTLFireability.xml
-rw-r--r-- 1 mcc users 1 Mar 26 22:42 NewModel
-rw-r--r-- 1 mcc users 12K Mar 23 15:25 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 127K Mar 23 15:25 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 8.7K Mar 23 15:25 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 81K Mar 23 15:25 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Apr 7 12:03 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K Apr 7 12:03 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 Mar 26 22:42 equiv_col
-rw-r--r-- 1 mcc users 8 Mar 26 22:42 instance
-rw-r--r-- 1 mcc users 6 Mar 26 22:42 iscolored
-rw-r--r-- 1 mcc users 9.3K Mar 31 16:48 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 PGCD-PT-D04N025-LTLFireability-00
FORMULA_NAME PGCD-PT-D04N025-LTLFireability-01
FORMULA_NAME PGCD-PT-D04N025-LTLFireability-02
FORMULA_NAME PGCD-PT-D04N025-LTLFireability-03
FORMULA_NAME PGCD-PT-D04N025-LTLFireability-04
FORMULA_NAME PGCD-PT-D04N025-LTLFireability-05
FORMULA_NAME PGCD-PT-D04N025-LTLFireability-06
FORMULA_NAME PGCD-PT-D04N025-LTLFireability-07
FORMULA_NAME PGCD-PT-D04N025-LTLFireability-08
FORMULA_NAME PGCD-PT-D04N025-LTLFireability-09
FORMULA_NAME PGCD-PT-D04N025-LTLFireability-10
FORMULA_NAME PGCD-PT-D04N025-LTLFireability-11
FORMULA_NAME PGCD-PT-D04N025-LTLFireability-12
FORMULA_NAME PGCD-PT-D04N025-LTLFireability-13
FORMULA_NAME PGCD-PT-D04N025-LTLFireability-14
FORMULA_NAME PGCD-PT-D04N025-LTLFireability-15

=== Now, execution of the tool begins

BK_START 1680940967860

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=PGCD-PT-D04N025
Applying reductions before tool ltsmin
Invoking reducer
Running Version 202304061127
[2023-04-08 08:02:49] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, LTLFireability, -timeout, 360, -rebuildPNML]
[2023-04-08 08:02:49] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2023-04-08 08:02:49] [INFO ] Load time of PNML (sax parser for PT used): 25 ms
[2023-04-08 08:02:49] [INFO ] Transformed 15 places.
[2023-04-08 08:02:49] [INFO ] Transformed 15 transitions.
[2023-04-08 08:02:49] [INFO ] Parsed PT model containing 15 places and 15 transitions and 70 arcs in 117 ms.
Parsed 16 properties from file /home/mcc/execution/LTLFireability.xml in 11 ms.
Working with output stream class java.io.PrintStream
Initial state reduction rules removed 5 formulas.
FORMULA PGCD-PT-D04N025-LTLFireability-01 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA PGCD-PT-D04N025-LTLFireability-02 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA PGCD-PT-D04N025-LTLFireability-05 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA PGCD-PT-D04N025-LTLFireability-06 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
FORMULA PGCD-PT-D04N025-LTLFireability-09 TRUE TECHNIQUES TOPOLOGICAL INITIAL_STATE
Support contains 15 out of 15 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 15/15 transitions.
Applied a total of 0 rules in 9 ms. Remains 15 /15 variables (removed 0) and now considering 15/15 (removed 0) transitions.
// Phase 1: matrix 15 rows 15 cols
[2023-04-08 08:02:50] [INFO ] Computed 6 invariants in 15 ms
[2023-04-08 08:02:50] [INFO ] Dead Transitions using invariants and state equation in 145 ms found 0 transitions.
[2023-04-08 08:02:50] [INFO ] Invariant cache hit.
[2023-04-08 08:02:50] [INFO ] Implicit Places using invariants in 33 ms returned []
[2023-04-08 08:02:50] [INFO ] Invariant cache hit.
[2023-04-08 08:02:50] [INFO ] State equation strengthened by 5 read => feed constraints.
[2023-04-08 08:02:50] [INFO ] Implicit Places using invariants and state equation in 41 ms returned []
Implicit Place search using SMT with State Equation took 77 ms to find 0 implicit places.
[2023-04-08 08:02:50] [INFO ] Invariant cache hit.
[2023-04-08 08:02:50] [INFO ] Dead Transitions using invariants and state equation in 49 ms found 0 transitions.
Finished structural reductions in LTL mode , in 1 iterations and 309 ms. Remains : 15/15 places, 15/15 transitions.
Support contains 15 out of 15 places after structural reductions.
[2023-04-08 08:02:50] [INFO ] Flatten gal took : 15 ms
[2023-04-08 08:02:50] [INFO ] Flatten gal took : 4 ms
[2023-04-08 08:02:50] [INFO ] Input system was already deterministic with 15 transitions.
Incomplete random walk after 10000 steps, including 2 resets, run finished after 45 ms. (steps per millisecond=222 ) properties (out of 17) seen :16
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 29 ms. (steps per millisecond=344 ) properties (out of 1) seen :0
Running SMT prover for 1 properties.
[2023-04-08 08:02:50] [INFO ] Invariant cache hit.
[2023-04-08 08:02:50] [INFO ] After 19ms SMT Verify possible using all constraints in real domain returned unsat :1 sat :0
Fused 1 Parikh solutions to 0 different solutions.
Parikh walk visited 0 properties in 0 ms.
Successfully simplified 1 atomic propositions for a total of 11 simplifications.
Computed a total of 0 stabilizing places and 0 stable transitions
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202304061127/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(X((!p0 U G(!p1)))))'
Support contains 6 out of 15 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 15/15 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 15/15 (removed 0) transitions.
[2023-04-08 08:02:50] [INFO ] Invariant cache hit.
[2023-04-08 08:02:50] [INFO ] Dead Transitions using invariants and state equation in 39 ms found 0 transitions.
[2023-04-08 08:02:50] [INFO ] Invariant cache hit.
[2023-04-08 08:02:50] [INFO ] Implicit Places using invariants in 39 ms returned [10, 11, 14]
Discarding 3 places :
Implicit Place search using SMT only with invariants took 48 ms to find 3 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 12/15 places, 15/15 transitions.
Applied a total of 0 rules in 0 ms. Remains 12 /12 variables (removed 0) and now considering 15/15 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 90 ms. Remains : 12/15 places, 15/15 transitions.
ANTLR Tool version 4.9.3 used for code generation does not match the current runtime version 4.7.2ANTLR Runtime version 4.9.3 used for parser compilation does not match the current runtime version 4.7.2ANTLR Tool version 4.9.3 used for code generation does not match the current runtime version 4.7.2ANTLR Runtime version 4.9.3 used for parser compilation does not match the current runtime version 4.7.2Stuttering acceptance computed with spot in 318 ms :[p1, p1, p1, true, p1]
Running random walk in product with property : PGCD-PT-D04N025-LTLFireability-00 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 1}], [{ cond=true, acceptance={} source=1 dest: 2}], [{ cond=(AND (NOT p1) (NOT p0)), acceptance={} source=2 dest: 2}, { cond=(AND p1 (NOT p0)), acceptance={0} source=2 dest: 2}, { cond=(AND p1 p0), acceptance={} source=2 dest: 3}, { cond=(AND (NOT p1) p0), acceptance={} source=2 dest: 4}], [{ cond=true, acceptance={0} source=3 dest: 3}], [{ cond=p1, acceptance={} source=4 dest: 3}, { cond=(NOT p1), acceptance={} source=4 dest: 4}]], initial=0, aps=[p1:(AND (GEQ s3 1) (GEQ s8 1) (GEQ s11 1)), p0:(OR (AND (GEQ s3 1) (GEQ s8 1) (GEQ s11 1)) (AND (GEQ s2 1) (GEQ s7 1) (GEQ s10 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 2 steps with 0 reset in 3 ms.
FORMULA PGCD-PT-D04N025-LTLFireability-00 FALSE TECHNIQUES STUTTER_TEST
Treatment of property PGCD-PT-D04N025-LTLFireability-00 finished in 465 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202304061127/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(p0))'
Support contains 4 out of 15 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 15/15 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 15/15 (removed 0) transitions.
[2023-04-08 08:02:51] [INFO ] Invariant cache hit.
[2023-04-08 08:02:51] [INFO ] Dead Transitions using invariants and state equation in 34 ms found 0 transitions.
[2023-04-08 08:02:51] [INFO ] Invariant cache hit.
[2023-04-08 08:02:51] [INFO ] Implicit Places using invariants in 39 ms returned [10, 12, 13]
Discarding 3 places :
Implicit Place search using SMT only with invariants took 40 ms to find 3 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 12/15 places, 15/15 transitions.
Applied a total of 0 rules in 0 ms. Remains 12 /12 variables (removed 0) and now considering 15/15 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 78 ms. Remains : 12/15 places, 15/15 transitions.
Stuttering acceptance computed with spot in 301 ms :[(NOT p0), (NOT p0), true]
Running random walk in product with property : PGCD-PT-D04N025-LTLFireability-03 automaton TGBA Formula[mat=[[{ cond=(NOT p0), acceptance={} source=0 dest: 2}], [{ cond=true, acceptance={} source=1 dest: 0}], [{ cond=true, acceptance={0} source=2 dest: 2}]], initial=1, aps=[p0:(AND (GEQ s1 3) (GEQ s10 1) (OR (LT s4 3) (LT s11 1)))], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-sensitive, terminal, very-weak, weak, inherently-weak], stateDesc=[null, null, null][false, false, false]]
Entered a terminal (fully accepting) state of product in 1 steps with 0 reset in 1 ms.
FORMULA PGCD-PT-D04N025-LTLFireability-03 FALSE TECHNIQUES STUTTER_TEST
Treatment of property PGCD-PT-D04N025-LTLFireability-03 finished in 396 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202304061127/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(G(p0)))'
Support contains 2 out of 15 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 15/15 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 15/15 (removed 0) transitions.
[2023-04-08 08:02:51] [INFO ] Invariant cache hit.
[2023-04-08 08:02:51] [INFO ] Dead Transitions using invariants and state equation in 40 ms found 0 transitions.
[2023-04-08 08:02:51] [INFO ] Invariant cache hit.
[2023-04-08 08:02:51] [INFO ] Implicit Places using invariants in 37 ms returned [10, 11, 13, 14]
Discarding 4 places :
Implicit Place search using SMT only with invariants took 38 ms to find 4 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 11/15 places, 15/15 transitions.
Applied a total of 0 rules in 1 ms. Remains 11 /11 variables (removed 0) and now considering 15/15 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 81 ms. Remains : 11/15 places, 15/15 transitions.
Stuttering acceptance computed with spot in 94 ms :[true, (NOT p0), (NOT p0)]
Running random walk in product with property : PGCD-PT-D04N025-LTLFireability-04 automaton TGBA Formula[mat=[[{ cond=true, acceptance={0} source=0 dest: 0}], [{ cond=true, acceptance={} source=1 dest: 2}], [{ cond=(NOT p0), acceptance={} source=2 dest: 0}, { cond=p0, acceptance={} source=2 dest: 2}]], initial=1, aps=[p0:(OR (LT s2 3) (LT s10 1))], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, complete, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-sensitive, terminal, very-weak, weak, inherently-weak], stateDesc=[null, null, null][false, false, false]]
Entered a terminal (fully accepting) state of product in 30 steps with 0 reset in 1 ms.
FORMULA PGCD-PT-D04N025-LTLFireability-04 FALSE TECHNIQUES STUTTER_TEST
Treatment of property PGCD-PT-D04N025-LTLFireability-04 finished in 192 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202304061127/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(((!p0 U !p1)&&X(p2))))'
Support contains 5 out of 15 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 15/15 transitions.
Applied a total of 0 rules in 0 ms. Remains 15 /15 variables (removed 0) and now considering 15/15 (removed 0) transitions.
[2023-04-08 08:02:51] [INFO ] Invariant cache hit.
[2023-04-08 08:02:51] [INFO ] Dead Transitions using invariants and state equation in 34 ms found 0 transitions.
[2023-04-08 08:02:51] [INFO ] Invariant cache hit.
[2023-04-08 08:02:52] [INFO ] Implicit Places using invariants in 32 ms returned [10, 11, 13]
Discarding 3 places :
Implicit Place search using SMT only with invariants took 33 ms to find 3 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 12/15 places, 15/15 transitions.
Applied a total of 0 rules in 1 ms. Remains 12 /12 variables (removed 0) and now considering 15/15 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 69 ms. Remains : 12/15 places, 15/15 transitions.
Stuttering acceptance computed with spot in 225 ms :[(OR (NOT p2) p1), (OR (NOT p2) p1), true, p1, (NOT p2)]
Running random walk in product with property : PGCD-PT-D04N025-LTLFireability-07 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 1}], [{ cond=(AND p1 p0), acceptance={} source=1 dest: 2}, { cond=(AND p1 (NOT p0)), acceptance={} source=1 dest: 3}, { cond=(OR (NOT p1) (NOT p0)), acceptance={} source=1 dest: 4}], [{ cond=true, acceptance={} source=2 dest: 2}], [{ cond=(AND p1 p0), acceptance={} source=3 dest: 2}, { cond=(AND p1 (NOT p0)), acceptance={} source=3 dest: 3}], [{ cond=(NOT p2), acceptance={} source=4 dest: 2}]], initial=0, aps=[p1:(OR (LT s2 3) (LT s10 1)), p0:(OR (LT s2 1) (LT s7 1) (LT s10 1)), p2:(AND (GEQ s4 3) (GEQ s11 1))], nbAcceptance=0, properties=[trans-labels, explicit-labels, trans-acc, no-univ-branch, stutter-sensitive, very-weak, weak, inherently-weak], stateDesc=[null, null, null, null, null][false, false, false, false, false]]
Entered a terminal (fully accepting) state of product in 2 steps with 0 reset in 0 ms.
FORMULA PGCD-PT-D04N025-LTLFireability-07 FALSE TECHNIQUES STUTTER_TEST
Treatment of property PGCD-PT-D04N025-LTLFireability-07 finished in 314 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202304061127/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(F(p0)))'
Support contains 3 out of 15 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 15/15 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 15/15 (removed 0) transitions.
[2023-04-08 08:02:52] [INFO ] Invariant cache hit.
[2023-04-08 08:02:52] [INFO ] Dead Transitions using invariants and state equation in 35 ms found 0 transitions.
[2023-04-08 08:02:52] [INFO ] Invariant cache hit.
[2023-04-08 08:02:52] [INFO ] Implicit Places using invariants in 31 ms returned [10, 11, 12, 14]
Discarding 4 places :
Implicit Place search using SMT only with invariants took 32 ms to find 4 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 11/15 places, 15/15 transitions.
Applied a total of 0 rules in 1 ms. Remains 11 /11 variables (removed 0) and now considering 15/15 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 71 ms. Remains : 11/15 places, 15/15 transitions.
Stuttering acceptance computed with spot in 73 ms :[(NOT p0), (NOT p0)]
Running random walk in product with property : PGCD-PT-D04N025-LTLFireability-08 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 1}], [{ cond=(NOT p0), acceptance={0} source=1 dest: 1}]], initial=0, aps=[p0:(AND (GEQ s3 1) (GEQ s8 1) (GEQ s10 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 35831 reset in 193 ms.
Stack based approach found an accepted trace after 83 steps with 28 reset with depth 11 and stack size 11 in 0 ms.
FORMULA PGCD-PT-D04N025-LTLFireability-08 FALSE TECHNIQUES STACK_TEST
Treatment of property PGCD-PT-D04N025-LTLFireability-08 finished in 350 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202304061127/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G(F((G(!p0)||(!p0&&G(F(!p1)))))))'
Support contains 3 out of 15 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 15/15 places, 15/15 transitions.
Applied a total of 0 rules in 6 ms. Remains 15 /15 variables (removed 0) and now considering 15/15 (removed 0) transitions.
[2023-04-08 08:02:52] [INFO ] Invariant cache hit.
[2023-04-08 08:02:52] [INFO ] Dead Transitions using invariants and state equation in 48 ms found 0 transitions.
[2023-04-08 08:02:52] [INFO ] Invariant cache hit.
[2023-04-08 08:02:52] [INFO ] Implicit Places using invariants in 51 ms returned [10, 11, 12, 13]
Discarding 4 places :
Implicit Place search using SMT only with invariants took 52 ms to find 4 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 11/15 places, 15/15 transitions.
Applied a total of 0 rules in 2 ms. Remains 11 /11 variables (removed 0) and now considering 15/15 (removed 0) transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 108 ms. Remains : 11/15 places, 15/15 transitions.
Stuttering acceptance computed with spot in 136 ms :[p0, (AND p1 p0), p0]
Running random walk in product with property : PGCD-PT-D04N025-LTLFireability-10 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 0}, { cond=(AND p1 p0), acceptance={} source=0 dest: 1}, { cond=p0, acceptance={} source=0 dest: 2}], [{ cond=(AND p1 (NOT p0)), acceptance={} source=1 dest: 1}, { cond=(AND p1 p0), acceptance={0} source=1 dest: 1}], [{ cond=p0, acceptance={0} source=2 dest: 2}]], initial=0, aps=[p1:(AND (GEQ s4 1) (GEQ s9 1) (GEQ s10 1)), p0:(AND (GEQ s4 3) (GEQ s10 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 309 reset in 190 ms.
Stack based approach found an accepted trace after 118 steps with 2 reset with depth 61 and stack size 57 in 0 ms.
FORMULA PGCD-PT-D04N025-LTLFireability-10 FALSE TECHNIQUES STACK_TEST
Treatment of property PGCD-PT-D04N025-LTLFireability-10 finished in 459 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202304061127/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(((G(p1) U p2)||(F(G(!p3)) U !p3)||p0)))'
Support contains 9 out of 15 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 15/15 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 15/15 (removed 0) transitions.
[2023-04-08 08:02:53] [INFO ] Invariant cache hit.
[2023-04-08 08:02:53] [INFO ] Dead Transitions using invariants and state equation in 31 ms found 0 transitions.
[2023-04-08 08:02:53] [INFO ] Invariant cache hit.
[2023-04-08 08:02:53] [INFO ] Implicit Places using invariants in 43 ms returned [11]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 45 ms to find 1 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 14/15 places, 15/15 transitions.
Applied a total of 0 rules in 0 ms. Remains 14 /14 variables (removed 0) and now considering 15/15 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 80 ms. Remains : 14/15 places, 15/15 transitions.
Stuttering acceptance computed with spot in 307 ms :[(AND (NOT p0) (NOT p2) p3), (AND (NOT p0) (NOT p2) p3), p3, (AND (NOT p2) p3), (AND p3 (NOT p1))]
Running random walk in product with property : PGCD-PT-D04N025-LTLFireability-11 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 1}], [{ cond=(AND (NOT p0) (NOT p2) (NOT p1) p3), acceptance={} source=1 dest: 2}, { cond=(AND (NOT p0) (NOT p2) p1 p3), acceptance={} source=1 dest: 3}, { cond=(AND (NOT p0) (NOT p2) p1 p3), acceptance={} source=1 dest: 4}], [{ cond=(NOT p3), acceptance={} source=2 dest: 2}, { cond=p3, acceptance={0} source=2 dest: 2}], [{ cond=(AND (NOT p2) (NOT p1)), acceptance={} source=3 dest: 2}, { cond=(AND (NOT p2) p1 (NOT p3)), acceptance={} source=3 dest: 3}, { cond=(AND (NOT p2) p1 p3), acceptance={0} source=3 dest: 3}, { cond=(AND (NOT p2) p1), acceptance={} source=3 dest: 4}], [{ cond=(NOT p1), acceptance={} source=4 dest: 2}, { cond=p1, acceptance={} source=4 dest: 4}]], initial=0, aps=[p0:(OR (LT s3 3) (LT s12 1)), p2:(AND (GEQ s0 3) (GEQ s10 1)), p1:(AND (GEQ s4 3) (GEQ s13 1)), p3:(OR (LT s2 1) (LT s7 1) (LT s11 1))], 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]]
Product exploration explored 100000 steps with 50000 reset in 102 ms.
Product exploration explored 100000 steps with 50000 reset in 120 ms.
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Knowledge obtained : [(AND p0 (NOT p2) (NOT p1) (NOT p3)), (X (NOT (AND (NOT p0) (NOT p2) p1 p3))), (X (NOT (AND (NOT p0) (NOT p2) (NOT p1) p3))), (X (X (NOT (AND (NOT p2) p1 p3))))]
False Knowledge obtained : [(X (X (AND (NOT p2) p1))), (X (X (NOT (AND (NOT p2) p1)))), (X (X (NOT p3))), (X (X p3)), (X (X (AND (NOT p2) p1 (NOT p3)))), (X (X (NOT (AND (NOT p2) p1 (NOT p3))))), (X (X (AND (NOT p2) (NOT p1)))), (X (X (NOT (AND (NOT p2) (NOT p1))))), (X (X (NOT p1))), (X (X p1))]
Property proved to be true thanks to knowledge (Minato strategy)
Knowledge based reduction with 4 factoid took 20 ms. Reduced automaton from 5 states, 12 edges and 4 AP (stutter sensitive) to 1 states, 0 edges and 0 AP (stutter insensitive).
FORMULA PGCD-PT-D04N025-LTLFireability-11 TRUE TECHNIQUES KNOWLEDGE
Treatment of property PGCD-PT-D04N025-LTLFireability-11 finished in 662 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202304061127/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X(G((X(p0)&&(p1||X(p1))))))'
Support contains 3 out of 15 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 15/15 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 15/15 (removed 0) transitions.
[2023-04-08 08:02:53] [INFO ] Invariant cache hit.
[2023-04-08 08:02:53] [INFO ] Dead Transitions using invariants and state equation in 26 ms found 0 transitions.
[2023-04-08 08:02:53] [INFO ] Invariant cache hit.
[2023-04-08 08:02:53] [INFO ] Implicit Places using invariants in 26 ms returned [11, 12, 13, 14]
Discarding 4 places :
Implicit Place search using SMT only with invariants took 27 ms to find 4 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 11/15 places, 15/15 transitions.
Applied a total of 0 rules in 1 ms. Remains 11 /11 variables (removed 0) and now considering 15/15 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 56 ms. Remains : 11/15 places, 15/15 transitions.
Stuttering acceptance computed with spot in 182 ms :[true, (OR (NOT p0) (NOT p1)), (OR (NOT p1) (NOT p0)), (OR (NOT p1) (NOT p0)), (OR (NOT p0) (NOT p1))]
Running random walk in product with property : PGCD-PT-D04N025-LTLFireability-12 automaton TGBA Formula[mat=[[{ cond=true, acceptance={0} source=0 dest: 0}], [{ cond=(NOT p0), acceptance={} source=1 dest: 0}, { cond=(AND p1 p0), acceptance={} source=1 dest: 1}, { cond=(AND (NOT p1) p0), acceptance={} source=1 dest: 2}], [{ cond=(OR (NOT p1) (NOT p0)), acceptance={} source=2 dest: 0}, { cond=(AND p1 p0), acceptance={} source=2 dest: 1}], [{ cond=true, acceptance={} source=3 dest: 4}], [{ cond=p1, acceptance={} source=4 dest: 1}, { cond=(NOT p1), acceptance={} source=4 dest: 2}]], initial=3, aps=[p0:(OR (LT s0 1) (LT s5 1) (LT s10 1)), p1:(AND (GEQ s0 1) (GEQ s5 1))], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, complete, deterministic, no-univ-branch, unambiguous, semi-deterministic, stutter-sensitive, terminal, weak, inherently-weak], stateDesc=[null, null, null, null, null][false, false, false, false, false]]
Entered a terminal (fully accepting) state of product in 2 steps with 0 reset in 0 ms.
FORMULA PGCD-PT-D04N025-LTLFireability-12 FALSE TECHNIQUES STUTTER_TEST
Treatment of property PGCD-PT-D04N025-LTLFireability-12 finished in 253 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202304061127/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(X((!p0||G(F(p0)))))'
Support contains 3 out of 15 places. Attempting structural reductions.
Starting structural reductions in LTL mode, iteration 0 : 15/15 places, 15/15 transitions.
Applied a total of 0 rules in 2 ms. Remains 15 /15 variables (removed 0) and now considering 15/15 (removed 0) transitions.
[2023-04-08 08:02:53] [INFO ] Invariant cache hit.
[2023-04-08 08:02:54] [INFO ] Dead Transitions using invariants and state equation in 28 ms found 0 transitions.
[2023-04-08 08:02:54] [INFO ] Invariant cache hit.
[2023-04-08 08:02:54] [INFO ] Implicit Places using invariants in 24 ms returned [10, 12, 13, 14]
Discarding 4 places :
Implicit Place search using SMT only with invariants took 25 ms to find 4 implicit places.
Starting structural reductions in LTL mode, iteration 1 : 11/15 places, 15/15 transitions.
Applied a total of 0 rules in 0 ms. Remains 11 /11 variables (removed 0) and now considering 15/15 (removed 0) transitions.
Finished structural reductions in LTL mode , in 2 iterations and 56 ms. Remains : 11/15 places, 15/15 transitions.
Stuttering acceptance computed with spot in 164 ms :[false, false, (NOT p0), (NOT p0)]
Running random walk in product with property : PGCD-PT-D04N025-LTLFireability-13 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 1}], [{ cond=p0, acceptance={} source=1 dest: 2}], [{ cond=true, acceptance={} source=2 dest: 2}, { cond=(NOT p0), acceptance={} source=2 dest: 3}], [{ cond=(NOT p0), acceptance={0} source=3 dest: 3}]], initial=0, aps=[p0:(OR (LT s1 1) (LT s6 1) (LT s10 1))], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, no-univ-branch, stutter-sensitive, very-weak, weak, inherently-weak], stateDesc=[null, null, null, null][false, false, false, false]]
Product exploration explored 100000 steps with 4433 reset in 130 ms.
Stack based approach found an accepted trace after 32 steps with 13 reset with depth 7 and stack size 7 in 0 ms.
FORMULA PGCD-PT-D04N025-LTLFireability-13 FALSE TECHNIQUES STACK_TEST
Treatment of property PGCD-PT-D04N025-LTLFireability-13 finished in 364 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202304061127/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(G(F((!p0||G(F(p1))))))'
Support contains 3 out of 15 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 15/15 places, 15/15 transitions.
Applied a total of 0 rules in 1 ms. Remains 15 /15 variables (removed 0) and now considering 15/15 (removed 0) transitions.
[2023-04-08 08:02:54] [INFO ] Invariant cache hit.
[2023-04-08 08:02:54] [INFO ] Dead Transitions using invariants and state equation in 31 ms found 0 transitions.
[2023-04-08 08:02:54] [INFO ] Invariant cache hit.
[2023-04-08 08:02:54] [INFO ] Implicit Places using invariants in 34 ms returned [10, 11, 13, 14]
Discarding 4 places :
Implicit Place search using SMT only with invariants took 35 ms to find 4 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 11/15 places, 15/15 transitions.
Applied a total of 0 rules in 1 ms. Remains 11 /11 variables (removed 0) and now considering 15/15 (removed 0) transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 70 ms. Remains : 11/15 places, 15/15 transitions.
Stuttering acceptance computed with spot in 107 ms :[(AND p0 (NOT p1)), (AND p0 (NOT p1))]
Running random walk in product with property : PGCD-PT-D04N025-LTLFireability-14 automaton TGBA Formula[mat=[[{ cond=true, acceptance={} source=0 dest: 0}, { cond=(AND p0 (NOT p1)), acceptance={} source=0 dest: 1}], [{ cond=(AND p0 (NOT p1)), acceptance={0} source=1 dest: 1}]], initial=0, aps=[p0:(OR (LT s2 1) (LT s7 1) (LT s10 1)), p1:(OR (LT s2 1) (LT s7 1))], nbAcceptance=1, properties=[trans-labels, explicit-labels, trans-acc, no-univ-branch, stutter-invariant, very-weak, weak, inherently-weak], stateDesc=[null, null][true, true]]
Product exploration explored 100000 steps with 0 reset in 128 ms.
Product exploration explored 100000 steps with 0 reset in 206 ms.
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Knowledge obtained : [(AND (NOT p0) (NOT p1)), (X (NOT (AND p0 (NOT p1)))), (X (X (NOT (AND p0 (NOT p1)))))]
False Knowledge obtained : []
Knowledge based reduction with 3 factoid took 107 ms. Reduced automaton from 2 states, 3 edges and 2 AP (stutter insensitive) to 2 states, 3 edges and 2 AP (stutter insensitive).
Stuttering acceptance computed with spot in 83 ms :[(AND p0 (NOT p1)), (AND p0 (NOT p1))]
Incomplete random walk after 10022 steps, including 2 resets, run finished after 11 ms. (steps per millisecond=911 ) properties (out of 1) seen :0
Incomplete Best-First random walk after 10001 steps, including 2 resets, run finished after 12 ms. (steps per millisecond=833 ) properties (out of 1) seen :0
Interrupted probabilistic random walk after 2574763 steps, run timeout after 3001 ms. (steps per millisecond=857 ) properties seen :{}
Probabilistic random walk after 2574763 steps, saw 1460674 distinct states, run finished after 3002 ms. (steps per millisecond=857 ) properties seen :0
Running SMT prover for 1 properties.
// Phase 1: matrix 15 rows 11 cols
[2023-04-08 08:02:58] [INFO ] Computed 2 invariants in 2 ms
[2023-04-08 08:02:58] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2023-04-08 08:02:58] [INFO ] After 38ms SMT Verify possible using all constraints in real domain returned unsat :1 sat :0
Fused 1 Parikh solutions to 0 different solutions.
Parikh walk visited 0 properties in 0 ms.
Found 1 invariant AP formulas.
Knowledge obtained : [(AND (NOT p0) (NOT p1)), (X (NOT (AND p0 (NOT p1)))), (X (X (NOT (AND p0 (NOT p1))))), (G (NOT (AND p0 (NOT p1))))]
False Knowledge obtained : []
Property proved to be true thanks to knowledge (Minato strategy)
Knowledge based reduction with 4 factoid took 15 ms. Reduced automaton from 2 states, 3 edges and 2 AP (stutter insensitive) to 1 states, 0 edges and 0 AP (stutter insensitive).
FORMULA PGCD-PT-D04N025-LTLFireability-14 TRUE TECHNIQUES KNOWLEDGE
Treatment of property PGCD-PT-D04N025-LTLFireability-14 finished in 3814 ms.
Running Spot : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.ltl.spot.binaries_1.0.0.202304061127/bin/ltl2tgba-linux64' '--check=stutter' '--hoaf=tv' '-f' '!(F((p0&&G((!p1&&F(p2))))))'
Support contains 4 out of 15 places. Attempting structural reductions.
Starting structural reductions in SI_LTL mode, iteration 0 : 15/15 places, 15/15 transitions.
Applied a total of 0 rules in 2 ms. Remains 15 /15 variables (removed 0) and now considering 15/15 (removed 0) transitions.
// Phase 1: matrix 15 rows 15 cols
[2023-04-08 08:02:58] [INFO ] Computed 6 invariants in 0 ms
[2023-04-08 08:02:58] [INFO ] Dead Transitions using invariants and state equation in 33 ms found 0 transitions.
[2023-04-08 08:02:58] [INFO ] Invariant cache hit.
[2023-04-08 08:02:58] [INFO ] Implicit Places using invariants in 31 ms returned [10, 11, 12, 14]
Discarding 4 places :
Implicit Place search using SMT only with invariants took 34 ms to find 4 implicit places.
Starting structural reductions in SI_LTL mode, iteration 1 : 11/15 places, 15/15 transitions.
Applied a total of 0 rules in 1 ms. Remains 11 /11 variables (removed 0) and now considering 15/15 (removed 0) transitions.
Finished structural reductions in SI_LTL mode , in 2 iterations and 71 ms. Remains : 11/15 places, 15/15 transitions.
Stuttering acceptance computed with spot in 137 ms :[(OR (NOT p0) (NOT p2) p1), (NOT p2), (OR (NOT p2) p1)]
Running random walk in product with property : PGCD-PT-D04N025-LTLFireability-15 automaton TGBA Formula[mat=[[{ cond=(OR (NOT p0) p1), acceptance={0} source=0 dest: 0}, { cond=(AND p0 (NOT p1) (NOT p2)), acceptance={} source=0 dest: 1}, { cond=(AND p0 (NOT p1)), acceptance={} source=0 dest: 2}], [{ cond=(NOT p2), acceptance={0} source=1 dest: 1}], [{ cond=p1, acceptance={0} source=2 dest: 0}, { cond=(AND (NOT p1) (NOT p2)), acceptance={} source=2 dest: 1}, { cond=(NOT p1), acceptance={} source=2 dest: 2}]], initial=0, aps=[p0:(OR (AND (GEQ s3 3) (GEQ s10 1)) (AND (GEQ s0 1) (GEQ s5 1))), p1:(AND (GEQ s0 1) (GEQ s5 1)), p2:(OR (LT s3 3) (LT s10 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 131 reset in 143 ms.
Stack based approach found an accepted trace after 84 steps with 1 reset with depth 44 and stack size 44 in 0 ms.
FORMULA PGCD-PT-D04N025-LTLFireability-15 FALSE TECHNIQUES STACK_TEST
Treatment of property PGCD-PT-D04N025-LTLFireability-15 finished in 365 ms.
All properties solved by simple procedures.
Total runtime 9024 ms.
ITS solved all properties within timeout

BK_STOP 1680940979401

--------------------
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_1.0.0.202304061127.jar
+ VERSION=202304061127
+ echo 'Running Version 202304061127'
+ /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="PGCD-PT-D04N025"
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 PGCD-PT-D04N025, 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 r521-tall-167987246700468"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/PGCD-PT-D04N025.tgz
mv PGCD-PT-D04N025 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 ;