Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2024-input.r232-tall-171649621400004.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2024-input.qcow2 backing_fmt=qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
....................
=====================================================================
Generated by BenchKit 2-5568
Executing tool greatspnxred
Input is JoinFreeModules-PT-0003, examination is Liveness
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r232-tall-171649621400004
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 520K
-rw-r--r-- 1 mcc users 7.0K May 14 13:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 77K May 14 13:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.5K May 14 13:22 CTLFireability.txt
-rw-r--r-- 1 mcc users 52K May 14 13:22 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 18 16:42 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 3.5K Apr 22 14:50 LTLCardinality.txt
-rw-r--r-- 1 mcc users 24K Apr 22 14:50 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.2K Apr 22 14:50 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K Apr 22 14:50 LTLFireability.xml
-rw-r--r-- 1 mcc users 13K Apr 11 14:20 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 144K Apr 11 14:20 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 12K Apr 11 14:20 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 110K Apr 11 14:20 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Apr 22 14:50 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Apr 22 14:50 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 18 16:42 equiv_col
-rw-r--r-- 1 mcc users 5 May 18 16:42 instance
-rw-r--r-- 1 mcc users 6 May 18 16:42 iscolored
-rw-r--r-- 1 mcc users 9.4K May 18 16:42 model.pnml

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

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

The expected result is a vector of booleans
BOOL_VECTOR

FORMULA_NAME Liveness

=== Now, execution of the tool begins

BK_START 1716534401248

Invoking MCC driver with
BK_TOOL=greatspnxred
BK_EXAMINATION=Liveness
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=JoinFreeModules-PT-0003
BK_MEMORY_CONFINEMENT=16384
Applying reductions before tool greatspn
Invoking reducer
Running Version 202405141337
[2024-05-24 07:06:42] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, Liveness, -timeout, 180, -rebuildPNML]
[2024-05-24 07:06:42] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2024-05-24 07:06:42] [INFO ] Load time of PNML (sax parser for PT used): 35 ms
[2024-05-24 07:06:42] [INFO ] Transformed 16 places.
[2024-05-24 07:06:42] [INFO ] Transformed 25 transitions.
[2024-05-24 07:06:42] [INFO ] Parsed PT model containing 16 places and 25 transitions and 71 arcs in 131 ms.
Discarding 12 transitions out of 25. Remains 13
Reduce places removed 1 places and 0 transitions.
Built sparse matrix representations for Structural reductions in 3 ms.19330KB memory used
Starting structural reductions in DEADLOCK mode, iteration 0 : 15/15 places, 25/25 transitions.
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Applied a total of 0 rules in 15 ms. Remains 15 /15 variables (removed 0) and now considering 25/25 (removed 0) transitions.
Running 18 sub problems to find dead transitions.
// Phase 1: matrix 25 rows 15 cols
[2024-05-24 07:06:42] [INFO ] Computed 3 invariants in 3 ms
[2024-05-24 07:06:42] [INFO ] State equation strengthened by 3 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 1 (OVERLAPS) 3/15 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 18 unsolved
[2024-05-24 07:06:42] [INFO ] Deduced a trap composed of 3 places in 31 ms of which 7 ms to minimize.
[2024-05-24 07:06:43] [INFO ] Deduced a trap composed of 3 places in 30 ms of which 1 ms to minimize.
[2024-05-24 07:06:43] [INFO ] Deduced a trap composed of 3 places in 22 ms of which 2 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/15 variables, 3/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 4 (OVERLAPS) 24/39 variables, 15/21 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/39 variables, 3/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/39 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 7 (OVERLAPS) 0/39 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
No progress, stopping.
After SMT solving in domain Real declared 39/40 variables, and 24 constraints, problems are : Problem set: 0 solved, 18 unsolved in 473 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 15/15 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 18/18 constraints, Known Traps: 3/3 constraints]
Escalating to Integer solving :Problem set: 0 solved, 18 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 1 (OVERLAPS) 3/15 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/15 variables, 3/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 4 (OVERLAPS) 24/39 variables, 15/21 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/39 variables, 3/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/39 variables, 18/42 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/39 variables, 0/42 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 8 (OVERLAPS) 0/39 variables, 0/42 constraints. Problems are: Problem set: 0 solved, 18 unsolved
No progress, stopping.
After SMT solving in domain Int declared 39/40 variables, and 42 constraints, problems are : Problem set: 0 solved, 18 unsolved in 527 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 15/15 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 18/18 constraints, Known Traps: 3/3 constraints]
After SMT, in 1039ms problems are : Problem set: 0 solved, 18 unsolved
Search for dead transitions found 0 dead transitions in 1052ms
Finished structural reductions in DEADLOCK mode , in 1 iterations and 1120 ms. Remains : 15/15 places, 25/25 transitions.
Starting structural reductions in DEADLOCK mode, iteration 0 : 15/15 places, 25/25 transitions.
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Applied a total of 0 rules in 2 ms. Remains 15 /15 variables (removed 0) and now considering 25/25 (removed 0) transitions.
[2024-05-24 07:06:43] [INFO ] Invariant cache hit.
[2024-05-24 07:06:43] [INFO ] Implicit Places using invariants in 19 ms returned []
[2024-05-24 07:06:43] [INFO ] Invariant cache hit.
[2024-05-24 07:06:43] [INFO ] State equation strengthened by 3 read => feed constraints.
[2024-05-24 07:06:43] [INFO ] Implicit Places using invariants and state equation in 25 ms returned []
Implicit Place search using SMT with State Equation took 60 ms to find 0 implicit places.
[2024-05-24 07:06:43] [INFO ] Redundant transitions in 1 ms returned []
Running 18 sub problems to find dead transitions.
[2024-05-24 07:06:43] [INFO ] Invariant cache hit.
[2024-05-24 07:06:43] [INFO ] State equation strengthened by 3 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 1 (OVERLAPS) 3/15 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 18 unsolved
[2024-05-24 07:06:43] [INFO ] Deduced a trap composed of 3 places in 24 ms of which 1 ms to minimize.
[2024-05-24 07:06:43] [INFO ] Deduced a trap composed of 3 places in 19 ms of which 1 ms to minimize.
[2024-05-24 07:06:44] [INFO ] Deduced a trap composed of 3 places in 17 ms of which 1 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/15 variables, 3/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 4 (OVERLAPS) 24/39 variables, 15/21 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/39 variables, 3/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/39 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 7 (OVERLAPS) 0/39 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
No progress, stopping.
After SMT solving in domain Real declared 39/40 variables, and 24 constraints, problems are : Problem set: 0 solved, 18 unsolved in 339 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 15/15 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 18/18 constraints, Known Traps: 3/3 constraints]
Escalating to Integer solving :Problem set: 0 solved, 18 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 1 (OVERLAPS) 3/15 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/15 variables, 3/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 4 (OVERLAPS) 24/39 variables, 15/21 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/39 variables, 3/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/39 variables, 18/42 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/39 variables, 0/42 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 8 (OVERLAPS) 0/39 variables, 0/42 constraints. Problems are: Problem set: 0 solved, 18 unsolved
No progress, stopping.
After SMT solving in domain Int declared 39/40 variables, and 42 constraints, problems are : Problem set: 0 solved, 18 unsolved in 309 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 15/15 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 18/18 constraints, Known Traps: 3/3 constraints]
After SMT, in 657ms problems are : Problem set: 0 solved, 18 unsolved
Search for dead transitions found 0 dead transitions in 663ms
Finished structural reductions in DEADLOCK mode , in 1 iterations and 731 ms. Remains : 15/15 places, 25/25 transitions.
Random walk for 1250000 steps, including 0 resets, run took 975 ms (no deadlock found). (steps per millisecond=1282 )
Random directed walk for 1250004 steps, including 0 resets, run took 807 ms (no deadlock found). (steps per millisecond=1548 )
[2024-05-24 07:06:46] [INFO ] Invariant cache hit.
[2024-05-24 07:06:46] [INFO ] [Real]Absence check using 3 positive place invariants in 1 ms returned sat
[2024-05-24 07:06:46] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2024-05-24 07:06:46] [INFO ] Solution in real domain found non-integer solution.
[2024-05-24 07:06:46] [INFO ] [Nat]Absence check using 3 positive place invariants in 0 ms returned sat
[2024-05-24 07:06:46] [INFO ] [Nat]Absence check using state equation in 16 ms returned sat
[2024-05-24 07:06:46] [INFO ] State equation strengthened by 3 read => feed constraints.
[2024-05-24 07:06:46] [INFO ] [Nat]Added 3 Read/Feed constraints in 4 ms returned sat
[2024-05-24 07:06:46] [INFO ] Computed and/alt/rep : 18/45/18 causal constraints (skipped 0 transitions) in 2 ms.
[2024-05-24 07:06:46] [INFO ] Added : 10 causal constraints over 2 iterations in 22 ms. Result :sat
Parikh directed walk for 3500 steps, including 163 resets, run took 14 ms. (steps per millisecond=250 )
Random directed walk for 500000 steps, including 0 resets, run took 380 ms (no deadlock found). (steps per millisecond=1315 )
Random walk for 500000 steps, including 0 resets, run took 343 ms (no deadlock found). (steps per millisecond=1457 )
Random directed walk for 500002 steps, including 0 resets, run took 292 ms (no deadlock found). (steps per millisecond=1712 )
Random walk for 500000 steps, including 0 resets, run took 353 ms (no deadlock found). (steps per millisecond=1416 )
Starting structural reductions in DEADLOCK mode, iteration 0 : 15/15 places, 25/25 transitions.
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Computed a total of 0 stabilizing places and 0 stable transitions
Applied a total of 0 rules in 2 ms. Remains 15 /15 variables (removed 0) and now considering 25/25 (removed 0) transitions.
[2024-05-24 07:06:47] [INFO ] Invariant cache hit.
[2024-05-24 07:06:47] [INFO ] Implicit Places using invariants in 23 ms returned []
[2024-05-24 07:06:47] [INFO ] Invariant cache hit.
[2024-05-24 07:06:47] [INFO ] State equation strengthened by 3 read => feed constraints.
[2024-05-24 07:06:47] [INFO ] Implicit Places using invariants and state equation in 30 ms returned []
Implicit Place search using SMT with State Equation took 59 ms to find 0 implicit places.
[2024-05-24 07:06:47] [INFO ] Redundant transitions in 0 ms returned []
Running 18 sub problems to find dead transitions.
[2024-05-24 07:06:47] [INFO ] Invariant cache hit.
[2024-05-24 07:06:47] [INFO ] State equation strengthened by 3 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 1 (OVERLAPS) 3/15 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 18 unsolved
[2024-05-24 07:06:47] [INFO ] Deduced a trap composed of 3 places in 18 ms of which 1 ms to minimize.
[2024-05-24 07:06:47] [INFO ] Deduced a trap composed of 3 places in 16 ms of which 0 ms to minimize.
[2024-05-24 07:06:48] [INFO ] Deduced a trap composed of 3 places in 17 ms of which 0 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/15 variables, 3/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 4 (OVERLAPS) 24/39 variables, 15/21 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/39 variables, 3/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/39 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 7 (OVERLAPS) 0/39 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
No progress, stopping.
After SMT solving in domain Real declared 39/40 variables, and 24 constraints, problems are : Problem set: 0 solved, 18 unsolved in 241 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 15/15 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 18/18 constraints, Known Traps: 3/3 constraints]
Escalating to Integer solving :Problem set: 0 solved, 18 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 1 (OVERLAPS) 3/15 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/15 variables, 3/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 4 (OVERLAPS) 24/39 variables, 15/21 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/39 variables, 3/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/39 variables, 18/42 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/39 variables, 0/42 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 8 (OVERLAPS) 0/39 variables, 0/42 constraints. Problems are: Problem set: 0 solved, 18 unsolved
No progress, stopping.
After SMT solving in domain Int declared 39/40 variables, and 42 constraints, problems are : Problem set: 0 solved, 18 unsolved in 271 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 15/15 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 18/18 constraints, Known Traps: 3/3 constraints]
After SMT, in 520ms problems are : Problem set: 0 solved, 18 unsolved
Search for dead transitions found 0 dead transitions in 521ms
Finished structural reductions in DEADLOCK mode , in 1 iterations and 589 ms. Remains : 15/15 places, 25/25 transitions.
Random walk for 1250000 steps, including 0 resets, run took 862 ms (no deadlock found). (steps per millisecond=1450 )
Random directed walk for 1250006 steps, including 0 resets, run took 758 ms (no deadlock found). (steps per millisecond=1649 )
[2024-05-24 07:06:50] [INFO ] Invariant cache hit.
[2024-05-24 07:06:50] [INFO ] [Real]Absence check using 3 positive place invariants in 0 ms returned sat
[2024-05-24 07:06:50] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2024-05-24 07:06:50] [INFO ] Solution in real domain found non-integer solution.
[2024-05-24 07:06:50] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2024-05-24 07:06:50] [INFO ] [Nat]Absence check using state equation in 10 ms returned sat
[2024-05-24 07:06:50] [INFO ] State equation strengthened by 3 read => feed constraints.
[2024-05-24 07:06:50] [INFO ] [Nat]Added 3 Read/Feed constraints in 5 ms returned sat
[2024-05-24 07:06:50] [INFO ] Computed and/alt/rep : 18/45/18 causal constraints (skipped 0 transitions) in 2 ms.
[2024-05-24 07:06:50] [INFO ] Added : 10 causal constraints over 2 iterations in 21 ms. Result :sat
Parikh directed walk for 3500 steps, including 165 resets, run took 6 ms. (steps per millisecond=583 )
Random directed walk for 500001 steps, including 0 resets, run took 302 ms (no deadlock found). (steps per millisecond=1655 )
Random walk for 500000 steps, including 0 resets, run took 340 ms (no deadlock found). (steps per millisecond=1470 )
Random directed walk for 500004 steps, including 0 resets, run took 295 ms (no deadlock found). (steps per millisecond=1694 )
Random walk for 500000 steps, including 0 resets, run took 349 ms (no deadlock found). (steps per millisecond=1432 )
[2024-05-24 07:06:51] [INFO ] Flatten gal took : 18 ms
Starting structural reductions in LIVENESS mode, iteration 0 : 16/16 places, 25/25 transitions.
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 15 transition count 25
Applied a total of 1 rules in 11 ms. Remains 15 /16 variables (removed 1) and now considering 25/25 (removed 0) transitions.
Running 18 sub problems to find dead transitions.
[2024-05-24 07:06:51] [INFO ] Invariant cache hit.
[2024-05-24 07:06:51] [INFO ] State equation strengthened by 3 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 1 (OVERLAPS) 3/15 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 18 unsolved
[2024-05-24 07:06:51] [INFO ] Deduced a trap composed of 3 places in 13 ms of which 0 ms to minimize.
[2024-05-24 07:06:51] [INFO ] Deduced a trap composed of 3 places in 12 ms of which 1 ms to minimize.
[2024-05-24 07:06:51] [INFO ] Deduced a trap composed of 3 places in 17 ms of which 1 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/15 variables, 3/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 4 (OVERLAPS) 24/39 variables, 15/21 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/39 variables, 3/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/39 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 7 (OVERLAPS) 0/39 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
No progress, stopping.
After SMT solving in domain Real declared 39/40 variables, and 24 constraints, problems are : Problem set: 0 solved, 18 unsolved in 237 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 15/15 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 18/18 constraints, Known Traps: 3/3 constraints]
Escalating to Integer solving :Problem set: 0 solved, 18 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 1 (OVERLAPS) 3/15 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/15 variables, 3/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 4 (OVERLAPS) 24/39 variables, 15/21 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/39 variables, 3/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/39 variables, 18/42 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/39 variables, 0/42 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 8 (OVERLAPS) 0/39 variables, 0/42 constraints. Problems are: Problem set: 0 solved, 18 unsolved
No progress, stopping.
After SMT solving in domain Int declared 39/40 variables, and 42 constraints, problems are : Problem set: 0 solved, 18 unsolved in 276 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 15/15 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 18/18 constraints, Known Traps: 3/3 constraints]
After SMT, in 524ms problems are : Problem set: 0 solved, 18 unsolved
Search for dead transitions found 0 dead transitions in 525ms
[2024-05-24 07:06:52] [INFO ] Invariant cache hit.
[2024-05-24 07:06:52] [INFO ] Implicit Places using invariants in 19 ms returned []
[2024-05-24 07:06:52] [INFO ] Invariant cache hit.
[2024-05-24 07:06:52] [INFO ] State equation strengthened by 3 read => feed constraints.
[2024-05-24 07:06:52] [INFO ] Implicit Places using invariants and state equation in 25 ms returned []
Implicit Place search using SMT with State Equation took 45 ms to find 0 implicit places.
Running 18 sub problems to find dead transitions.
[2024-05-24 07:06:52] [INFO ] Invariant cache hit.
[2024-05-24 07:06:52] [INFO ] State equation strengthened by 3 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 1 (OVERLAPS) 3/15 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 18 unsolved
[2024-05-24 07:06:52] [INFO ] Deduced a trap composed of 3 places in 12 ms of which 1 ms to minimize.
[2024-05-24 07:06:52] [INFO ] Deduced a trap composed of 3 places in 13 ms of which 0 ms to minimize.
[2024-05-24 07:06:52] [INFO ] Deduced a trap composed of 3 places in 13 ms of which 1 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/15 variables, 3/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 4 (OVERLAPS) 24/39 variables, 15/21 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/39 variables, 3/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/39 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 7 (OVERLAPS) 0/39 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
No progress, stopping.
After SMT solving in domain Real declared 39/40 variables, and 24 constraints, problems are : Problem set: 0 solved, 18 unsolved in 212 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 15/15 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 18/18 constraints, Known Traps: 3/3 constraints]
Escalating to Integer solving :Problem set: 0 solved, 18 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 1 (OVERLAPS) 3/15 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/15 variables, 3/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 4 (OVERLAPS) 24/39 variables, 15/21 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/39 variables, 3/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/39 variables, 18/42 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/39 variables, 0/42 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 8 (OVERLAPS) 0/39 variables, 0/42 constraints. Problems are: Problem set: 0 solved, 18 unsolved
No progress, stopping.
After SMT solving in domain Int declared 39/40 variables, and 42 constraints, problems are : Problem set: 0 solved, 18 unsolved in 291 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 15/15 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 18/18 constraints, Known Traps: 3/3 constraints]
After SMT, in 510ms problems are : Problem set: 0 solved, 18 unsolved
Search for dead transitions found 0 dead transitions in 510ms
Starting structural reductions in LIVENESS mode, iteration 1 : 15/16 places, 25/25 transitions.
Finished structural reductions in LIVENESS mode , in 1 iterations and 1092 ms. Remains : 15/16 places, 25/25 transitions.
Discarding 12 transitions out of 25. Remains 13
Initial state reduction rules removed 1 formulas.
RANDOM walk for 625 steps (0 resets) in 52 ms. (11 steps per ms) remains 0/12 properties
Able to resolve query QuasiLiveness after proving 13 properties.
Starting structural reductions in LIVENESS mode, iteration 0 : 16/16 places, 25/25 transitions.
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 15 transition count 25
Applied a total of 1 rules in 1 ms. Remains 15 /16 variables (removed 1) and now considering 25/25 (removed 0) transitions.
Running 18 sub problems to find dead transitions.
[2024-05-24 07:06:52] [INFO ] Invariant cache hit.
[2024-05-24 07:06:52] [INFO ] State equation strengthened by 3 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 1 (OVERLAPS) 3/15 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 18 unsolved
[2024-05-24 07:06:52] [INFO ] Deduced a trap composed of 3 places in 22 ms of which 0 ms to minimize.
[2024-05-24 07:06:52] [INFO ] Deduced a trap composed of 3 places in 14 ms of which 0 ms to minimize.
[2024-05-24 07:06:52] [INFO ] Deduced a trap composed of 3 places in 15 ms of which 1 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/15 variables, 3/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 4 (OVERLAPS) 24/39 variables, 15/21 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/39 variables, 3/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/39 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 7 (OVERLAPS) 0/39 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
No progress, stopping.
After SMT solving in domain Real declared 39/40 variables, and 24 constraints, problems are : Problem set: 0 solved, 18 unsolved in 216 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 15/15 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 18/18 constraints, Known Traps: 3/3 constraints]
Escalating to Integer solving :Problem set: 0 solved, 18 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 1 (OVERLAPS) 3/15 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/15 variables, 3/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 4 (OVERLAPS) 24/39 variables, 15/21 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/39 variables, 3/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/39 variables, 18/42 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/39 variables, 0/42 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 8 (OVERLAPS) 0/39 variables, 0/42 constraints. Problems are: Problem set: 0 solved, 18 unsolved
No progress, stopping.
After SMT solving in domain Int declared 39/40 variables, and 42 constraints, problems are : Problem set: 0 solved, 18 unsolved in 293 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 15/15 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 18/18 constraints, Known Traps: 3/3 constraints]
After SMT, in 517ms problems are : Problem set: 0 solved, 18 unsolved
Search for dead transitions found 0 dead transitions in 517ms
[2024-05-24 07:06:53] [INFO ] Invariant cache hit.
[2024-05-24 07:06:53] [INFO ] Implicit Places using invariants in 16 ms returned []
[2024-05-24 07:06:53] [INFO ] Invariant cache hit.
[2024-05-24 07:06:53] [INFO ] State equation strengthened by 3 read => feed constraints.
[2024-05-24 07:06:53] [INFO ] Implicit Places using invariants and state equation in 23 ms returned []
Implicit Place search using SMT with State Equation took 43 ms to find 0 implicit places.
Running 18 sub problems to find dead transitions.
[2024-05-24 07:06:53] [INFO ] Invariant cache hit.
[2024-05-24 07:06:53] [INFO ] State equation strengthened by 3 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 1 (OVERLAPS) 3/15 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 18 unsolved
[2024-05-24 07:06:53] [INFO ] Deduced a trap composed of 3 places in 16 ms of which 0 ms to minimize.
[2024-05-24 07:06:53] [INFO ] Deduced a trap composed of 3 places in 22 ms of which 1 ms to minimize.
[2024-05-24 07:06:53] [INFO ] Deduced a trap composed of 3 places in 19 ms of which 1 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/15 variables, 3/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 4 (OVERLAPS) 24/39 variables, 15/21 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/39 variables, 3/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/39 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 7 (OVERLAPS) 0/39 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
No progress, stopping.
After SMT solving in domain Real declared 39/40 variables, and 24 constraints, problems are : Problem set: 0 solved, 18 unsolved in 209 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 15/15 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 18/18 constraints, Known Traps: 3/3 constraints]
Escalating to Integer solving :Problem set: 0 solved, 18 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 1 (OVERLAPS) 3/15 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/15 variables, 3/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/15 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 4 (OVERLAPS) 24/39 variables, 15/21 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/39 variables, 3/24 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/39 variables, 18/42 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/39 variables, 0/42 constraints. Problems are: Problem set: 0 solved, 18 unsolved
At refinement iteration 8 (OVERLAPS) 0/39 variables, 0/42 constraints. Problems are: Problem set: 0 solved, 18 unsolved
No progress, stopping.
After SMT solving in domain Int declared 39/40 variables, and 42 constraints, problems are : Problem set: 0 solved, 18 unsolved in 276 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 15/15 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 18/18 constraints, Known Traps: 3/3 constraints]
After SMT, in 511ms problems are : Problem set: 0 solved, 18 unsolved
Search for dead transitions found 0 dead transitions in 512ms
Starting structural reductions in LIVENESS mode, iteration 1 : 15/16 places, 25/25 transitions.
Finished structural reductions in LIVENESS mode , in 1 iterations and 1073 ms. Remains : 15/16 places, 25/25 transitions.
Discarding 12 transitions out of 25. Remains 13
Net is quasi-live, checking if it is reversible to establish liveness.
Net is conservative; using simplified expression for initial state.
Unable to solve all queries for examination Liveness. Remains :1 assertions to prove.
Unable to solve all queries for examination Liveness. Remains :13 assertions to prove.
No /home/mcc/execution/Liveness.xml examination file found. Proceeding without properties.
Parsed 13 properties from file /home/mcc/execution/Liveness.xml in 1 ms.
Working with output stream class java.io.PrintStream
Total runtime 11367 ms.
----------------------------------------------------------------------
GreatSPN-meddly tool, MCC 2023
----------------------------------------------------------------------

Running JoinFreeModules-PT-0003

IS_COLORED=
IS_NUPN=

LOADING PETRI NET FILE /home/mcc/execution/model.pnml (PNML) ...
PNML VERSION 2009, P/T NET.
COLOR CLASSES: 0
CONSTANTS: 0
PLACES: 16
TRANSITIONS: 25
COLOR VARS: 0
MEASURES: 0
LOADING TIME: [User 0.000s, Sys 0.001s]


SAVING FILE /home/mcc/execution/model (.net / .def) ...
EXPORT TIME: [User 0.000s, Sys 0.000s]


----------------------------------------------------------------------
GreatSPN/Meddly.
Copyright (C) 1987-2022, University of Torino, Italy.
website: https://github.com/greatspn/SOURCES

Based on MEDDLY version 0.16.0
Copyright (C) 2009, Iowa State University Research Foundation, Inc.
website: http://meddly.sourceforge.net

Process ID: 665
MODEL NAME: /home/mcc/execution/model
16 places, 25 transitions.

Creating all event NSFs..
Creating all event NSFs..
Creating all event NSFs..
Split: SplitSubtract
Start RS construction.
Split: SplitSubtract
Start RS construction.
Split: SplitSubtract
Start RS construction.
Creating all event NSFs..
Building monolithic NSF...
FORMULA Liveness TRUE TECHNIQUES DECISION_DIAGRAMS PARALLEL_PROCESSING UNFOLDING_TO_PT USE_NUPN TOPOLOGICAL
Ok.
EXITCODE: 0
----------------------------------------------------------------------

BK_STOP 1716534414024

--------------------
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//
++ ls /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202405141337.jar
++ perl -pe 's/.*\.//g'
+ VERSION=202405141337
+ echo 'Running Version 202405141337'
+ /home/mcc/BenchKit/bin//../reducer/bin//../../itstools//itstools/its-tools -pnfolder /home/mcc/execution -examination Liveness -timeout 180 -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="JoinFreeModules-PT-0003"
export BK_EXAMINATION="Liveness"
export BK_TOOL="greatspnxred"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="1800"
export BK_MEMORY_CONFINEMENT="16384"
export BK_BIN_PATH="/home/mcc/BenchKit/bin/"

# this is specific to your benchmark or test

export BIN_DIR="$HOME/BenchKit/bin"

# remove the execution directoty if it exists (to avoid increse of .vmdk images)
if [ -d execution ] ; then
rm -rf execution
fi

# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-5568"
echo " Executing tool greatspnxred"
echo " Input is JoinFreeModules-PT-0003, examination is Liveness"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r232-tall-171649621400004"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/JoinFreeModules-PT-0003.tgz
mv JoinFreeModules-PT-0003 execution
cd execution
if [ "Liveness" = "ReachabilityDeadlock" ] || [ "Liveness" = "UpperBounds" ] || [ "Liveness" = "QuasiLiveness" ] || [ "Liveness" = "StableMarking" ] || [ "Liveness" = "Liveness" ] || [ "Liveness" = "OneSafe" ] || [ "Liveness" = "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 [ "Liveness" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "Liveness" != "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 "Liveness.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property Liveness.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "Liveness.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 '' Liveness.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "Liveness" = "ReachabilityDeadlock" ] || [ "Liveness" = "QuasiLiveness" ] || [ "Liveness" = "StableMarking" ] || [ "Liveness" = "Liveness" ] || [ "Liveness" = "OneSafe" ] ; then
echo "FORMULA_NAME Liveness"
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 ;