Execution Chart

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

Trace from the execution

Formatting '/data/fko/mcc2021-input.r170-oct2-162089287100111.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fko/mcc2021-input.qcow2 cluster_size=65536 lazy_refcounts=off refcount_bits=16
Waiting for the VM to be ready (probing ssh)
.....................
=====================================================================
Generated by BenchKit 2-4028
Executing tool gold2020
Input is PolyORBLF-PT-S02J04T06, examination is ReachabilityCardinality
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r170-oct2-162089287100111
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 1.9M
-rw-r--r-- 1 mcc users 58K May 5 16:58 CTLCardinality.txt
-rw-r--r-- 1 mcc users 246K May 10 09:43 CTLCardinality.xml
-rw-r--r-- 1 mcc users 83K May 5 16:58 CTLFireability.txt
-rw-r--r-- 1 mcc users 418K May 10 09:43 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 6 14:48 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 6.3K May 6 14:48 GenericPropertiesVerdict.xml
-rw-r--r-- 1 mcc users 7.1K Mar 28 16:26 LTLCardinality.txt
-rw-r--r-- 1 mcc users 35K Mar 28 16:26 LTLCardinality.xml
-rw-r--r-- 1 mcc users 8.3K Mar 28 16:26 LTLFireability.txt
-rw-r--r-- 1 mcc users 41K Mar 28 16:26 LTLFireability.xml
-rw-r--r-- 1 mcc users 8.0K Mar 27 09:19 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 30K Mar 27 09:19 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 12K Mar 25 11:52 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 43K Mar 25 11:52 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 2.6K Mar 22 09:16 UpperBounds.txt
-rw-r--r-- 1 mcc users 5.4K Mar 22 09:16 UpperBounds.xml
-rw-r--r-- 1 mcc users 5 May 5 16:51 equiv_col
-rw-r--r-- 1 mcc users 10 May 5 16:51 instance
-rw-r--r-- 1 mcc users 6 May 5 16:51 iscolored
-rw-r--r-- 1 mcc users 862K May 5 16:51 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 PolyORBLF-PT-S02J04T06-ReachabilityCardinality-00
FORMULA_NAME PolyORBLF-PT-S02J04T06-ReachabilityCardinality-01
FORMULA_NAME PolyORBLF-PT-S02J04T06-ReachabilityCardinality-02
FORMULA_NAME PolyORBLF-PT-S02J04T06-ReachabilityCardinality-03
FORMULA_NAME PolyORBLF-PT-S02J04T06-ReachabilityCardinality-04
FORMULA_NAME PolyORBLF-PT-S02J04T06-ReachabilityCardinality-05
FORMULA_NAME PolyORBLF-PT-S02J04T06-ReachabilityCardinality-06
FORMULA_NAME PolyORBLF-PT-S02J04T06-ReachabilityCardinality-07
FORMULA_NAME PolyORBLF-PT-S02J04T06-ReachabilityCardinality-08
FORMULA_NAME PolyORBLF-PT-S02J04T06-ReachabilityCardinality-09
FORMULA_NAME PolyORBLF-PT-S02J04T06-ReachabilityCardinality-10
FORMULA_NAME PolyORBLF-PT-S02J04T06-ReachabilityCardinality-11
FORMULA_NAME PolyORBLF-PT-S02J04T06-ReachabilityCardinality-12
FORMULA_NAME PolyORBLF-PT-S02J04T06-ReachabilityCardinality-13
FORMULA_NAME PolyORBLF-PT-S02J04T06-ReachabilityCardinality-14
FORMULA_NAME PolyORBLF-PT-S02J04T06-ReachabilityCardinality-15

=== Now, execution of the tool begins

BK_START 1621379525348

bash -c /home/mcc/BenchKit/BenchKit_head.sh 2> STDERR ; echo ; echo -n "BK_STOP " ; date -u +%s%3N
[2021-05-18 23:12:07] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityCardinality, -z3path, /home/mcc/BenchKit//z3/bin/z3, -yices2path, /home/mcc/BenchKit//yices/bin/yices, -timeout, 3600, -rebuildPNML]
[2021-05-18 23:12:07] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2021-05-18 23:12:07] [INFO ] Load time of PNML (sax parser for PT used): 90 ms
[2021-05-18 23:12:07] [INFO ] Transformed 476 places.
[2021-05-18 23:12:07] [INFO ] Transformed 920 transitions.
[2021-05-18 23:12:07] [INFO ] Parsed PT model containing 476 places and 920 transitions in 127 ms.
Ensure Unique test removed 96 transitions
Reduce redundant transitions removed 96 transitions.
Parsed 16 properties from file /home/mcc/execution/ReachabilityCardinality.xml in 29 ms.
Working with output stream class java.io.PrintStream
Incomplete random walk after 10000 steps, including 2 resets, run finished after 65 ms. (steps per millisecond=153 ) properties seen :[0, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1]
FORMULA PolyORBLF-PT-S02J04T06-ReachabilityCardinality-15 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-PT-S02J04T06-ReachabilityCardinality-14 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-PT-S02J04T06-ReachabilityCardinality-13 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-PT-S02J04T06-ReachabilityCardinality-12 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-PT-S02J04T06-ReachabilityCardinality-11 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-PT-S02J04T06-ReachabilityCardinality-09 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-PT-S02J04T06-ReachabilityCardinality-08 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-PT-S02J04T06-ReachabilityCardinality-06 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-PT-S02J04T06-ReachabilityCardinality-05 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-PT-S02J04T06-ReachabilityCardinality-03 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
FORMULA PolyORBLF-PT-S02J04T06-ReachabilityCardinality-01 FALSE TECHNIQUES TOPOLOGICAL RANDOM_WALK
Incomplete Best-First random walk after 10000 steps, including 0 resets, run finished after 27 ms. (steps per millisecond=370 ) properties seen :[0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 1 resets, run finished after 21 ms. (steps per millisecond=476 ) properties seen :[0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10000 steps, including 1 resets, run finished after 27 ms. (steps per millisecond=370 ) properties seen :[0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10001 steps, including 0 resets, run finished after 27 ms. (steps per millisecond=370 ) properties seen :[0, 0, 0, 0, 0]
Incomplete Best-First random walk after 10000 steps, including 0 resets, run finished after 22 ms. (steps per millisecond=454 ) properties seen :[0, 0, 0, 0, 0]
[2021-05-18 23:12:07] [INFO ] Flow matrix only has 812 transitions (discarded 12 similar events)
// Phase 1: matrix 812 rows 476 cols
[2021-05-18 23:12:07] [INFO ] Computed 46 place invariants in 33 ms
[2021-05-18 23:12:07] [INFO ] [Real]Absence check using 11 positive place invariants in 19 ms returned sat
[2021-05-18 23:12:07] [INFO ] [Real]Absence check using 11 positive and 35 generalized place invariants in 15 ms returned unsat
[2021-05-18 23:12:07] [INFO ] [Real]Absence check using 11 positive place invariants in 11 ms returned sat
[2021-05-18 23:12:08] [INFO ] [Real]Absence check using 11 positive and 35 generalized place invariants in 27 ms returned sat
[2021-05-18 23:12:08] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-18 23:12:09] [INFO ] [Real]Absence check using state equation in 1072 ms returned sat
[2021-05-18 23:12:09] [INFO ] Solution in real domain found non-integer solution.
[2021-05-18 23:12:09] [INFO ] [Nat]Absence check using 11 positive place invariants in 17 ms returned sat
[2021-05-18 23:12:09] [INFO ] [Nat]Absence check using 11 positive and 35 generalized place invariants in 39 ms returned sat
[2021-05-18 23:12:09] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2021-05-18 23:12:14] [INFO ] [Nat]Absence check using state equation in 4886 ms returned (error "Solver has unexpectedly terminated")
[2021-05-18 23:12:14] [INFO ] [Real]Absence check using 11 positive place invariants in 10 ms returned sat
[2021-05-18 23:12:14] [INFO ] [Real]Absence check using 11 positive and 35 generalized place invariants in 18 ms returned unsat
[2021-05-18 23:12:14] [INFO ] [Real]Absence check using 11 positive place invariants in 11 ms returned sat
[2021-05-18 23:12:14] [INFO ] [Real]Absence check using 11 positive and 35 generalized place invariants in 34 ms returned sat
[2021-05-18 23:12:14] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-18 23:12:15] [INFO ] [Real]Absence check using state equation in 1513 ms returned sat
[2021-05-18 23:12:15] [INFO ] Solution in real domain found non-integer solution.
[2021-05-18 23:12:15] [INFO ] [Nat]Absence check using 11 positive place invariants in 12 ms returned sat
[2021-05-18 23:12:15] [INFO ] [Nat]Absence check using 11 positive and 35 generalized place invariants in 35 ms returned sat
[2021-05-18 23:12:15] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2021-05-18 23:12:17] [INFO ] [Nat]Absence check using state equation in 1295 ms returned sat
[2021-05-18 23:12:17] [INFO ] State equation strengthened by 78 read => feed constraints.
[2021-05-18 23:12:17] [INFO ] [Nat]Added 78 Read/Feed constraints in 518 ms returned sat
[2021-05-18 23:12:18] [INFO ] Deduced a trap composed of 107 places in 346 ms
[2021-05-18 23:12:18] [INFO ] Trap strengthening procedure managed to obtain unsat after adding 1 trap constraints in 408 ms
[2021-05-18 23:12:18] [INFO ] [Real]Absence check using 11 positive place invariants in 17 ms returned sat
[2021-05-18 23:12:18] [INFO ] [Real]Absence check using 11 positive and 35 generalized place invariants in 27 ms returned sat
[2021-05-18 23:12:18] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-18 23:12:19] [INFO ] [Real]Absence check using state equation in 1500 ms returned sat
[2021-05-18 23:12:19] [INFO ] Solution in real domain found non-integer solution.
[2021-05-18 23:12:19] [INFO ] [Nat]Absence check using 11 positive place invariants in 15 ms returned sat
[2021-05-18 23:12:20] [INFO ] [Nat]Absence check using 11 positive and 35 generalized place invariants in 83 ms returned sat
[2021-05-18 23:12:20] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2021-05-18 23:12:24] [INFO ] [Nat]Absence check using state equation in 4846 ms returned (error "Solver has unexpectedly terminated")
FORMULA PolyORBLF-PT-S02J04T06-ReachabilityCardinality-07 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA PolyORBLF-PT-S02J04T06-ReachabilityCardinality-04 FALSE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
FORMULA PolyORBLF-PT-S02J04T06-ReachabilityCardinality-00 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Support contains 12 out of 476 places. Attempting structural reductions.
Starting structural reductions, iteration 0 : 476/476 places, 824/824 transitions.
Ensure Unique test removed 2 places
Performed 41 Post agglomeration using F-continuation condition.Transition count delta: 41
Iterating post reduction 0 with 43 rules applied. Total rules applied 43 place count 474 transition count 783
Reduce places removed 41 places and 0 transitions.
Iterating post reduction 1 with 41 rules applied. Total rules applied 84 place count 433 transition count 783
Performed 52 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 52 Pre rules applied. Total rules applied 84 place count 433 transition count 731
Deduced a syphon composed of 52 places in 2 ms
Reduce places removed 52 places and 0 transitions.
Iterating global reduction 2 with 104 rules applied. Total rules applied 188 place count 381 transition count 731
Performed 42 Post agglomeration using F-continuation condition.Transition count delta: 42
Deduced a syphon composed of 42 places in 14 ms
Reduce places removed 42 places and 0 transitions.
Iterating global reduction 2 with 84 rules applied. Total rules applied 272 place count 339 transition count 689
Free-agglomeration rule (complex) applied 12 times.
Iterating global reduction 2 with 12 rules applied. Total rules applied 284 place count 339 transition count 677
Reduce places removed 12 places and 0 transitions.
Iterating post reduction 2 with 12 rules applied. Total rules applied 296 place count 327 transition count 677
Partial Free-agglomeration rule applied 6 times.
Drop transitions removed 6 transitions
Iterating global reduction 3 with 6 rules applied. Total rules applied 302 place count 327 transition count 677
Applied a total of 302 rules in 248 ms. Remains 327 /476 variables (removed 149) and now considering 677/824 (removed 147) transitions.
[2021-05-18 23:12:25] [INFO ] Flow matrix only has 665 transitions (discarded 12 similar events)
// Phase 1: matrix 665 rows 327 cols
[2021-05-18 23:12:25] [INFO ] Computed 44 place invariants in 24 ms
[2021-05-18 23:12:26] [INFO ] Dead Transitions using invariants and state equation in 1601 ms returned [567, 568, 569, 571, 573, 574, 575, 577, 578, 579, 580, 585, 586, 588, 590, 591, 592, 593, 594, 595, 596, 598, 608, 609, 610, 611, 612, 614, 615, 616, 618, 619, 620, 621, 622, 623, 624, 627, 628, 629, 630, 631, 632, 633, 640, 641, 642, 643, 644, 645, 647, 649, 650, 651, 652, 653, 655, 656, 657, 658, 659, 660, 662, 664, 665, 666]
Found 66 dead transitions using SMT.
Drop transitions removed 66 transitions
Dead transitions reduction (with SMT) triggered by suspicious arc values removed 66 transitions :[666, 665, 664, 662, 660, 659, 658, 657, 656, 655, 653, 652, 651, 650, 649, 647, 645, 644, 643, 642, 641, 640, 633, 632, 631, 630, 629, 628, 627, 624, 623, 622, 621, 620, 619, 618, 616, 615, 614, 612, 611, 610, 609, 608, 598, 596, 595, 594, 593, 592, 591, 590, 588, 586, 585, 580, 579, 578, 577, 575, 574, 573, 571, 569, 568, 567]
Starting structural reductions, iteration 1 : 327/476 places, 611/824 transitions.
Reduce places removed 1 places and 12 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 326 transition count 599
Reduce places removed 12 places and 12 transitions.
Iterating post reduction 1 with 12 rules applied. Total rules applied 13 place count 314 transition count 587
Deduced a syphon composed of 1 places in 0 ms
Applied a total of 13 rules in 18 ms. Remains 314 /327 variables (removed 13) and now considering 587/611 (removed 24) transitions.
Finished structural reductions, in 2 iterations. Remains : 314/476 places, 587/824 transitions.
Deduced a syphon composed of 1 places in 1 ms
Reduce places removed 1 places and 0 transitions.
Incomplete random walk after 1000000 steps, including 582 resets, run finished after 2684 ms. (steps per millisecond=372 ) properties seen :[0, 0]
Incomplete Best-First random walk after 1000001 steps, including 278 resets, run finished after 1391 ms. (steps per millisecond=718 ) properties seen :[0, 0]
Incomplete Best-First random walk after 1000001 steps, including 236 resets, run finished after 1285 ms. (steps per millisecond=778 ) properties seen :[0, 0]
Interrupted probabilistic random walk after 4347041 steps, run timeout after 30001 ms. (steps per millisecond=144 ) properties seen :[0, 0]
Probabilistic random walk after 4347041 steps, saw 1613270 distinct states, run finished after 30002 ms. (steps per millisecond=144 ) properties seen :[0, 0]
[2021-05-18 23:13:02] [INFO ] Flow matrix only has 575 transitions (discarded 12 similar events)
// Phase 1: matrix 575 rows 313 cols
[2021-05-18 23:13:02] [INFO ] Computed 44 place invariants in 15 ms
[2021-05-18 23:13:02] [INFO ] [Real]Absence check using 16 positive place invariants in 52 ms returned unsat
[2021-05-18 23:13:02] [INFO ] [Real]Absence check using 16 positive place invariants in 41 ms returned sat
[2021-05-18 23:13:02] [INFO ] [Real]Absence check using 16 positive and 28 generalized place invariants in 23 ms returned sat
[2021-05-18 23:13:02] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-18 23:13:02] [INFO ] [Real]Absence check using state equation in 471 ms returned sat
[2021-05-18 23:13:02] [INFO ] Solution in real domain found non-integer solution.
[2021-05-18 23:13:02] [INFO ] [Nat]Absence check using 16 positive place invariants in 14 ms returned sat
[2021-05-18 23:13:02] [INFO ] [Nat]Absence check using 16 positive and 28 generalized place invariants in 16 ms returned sat
[2021-05-18 23:13:02] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2021-05-18 23:13:03] [INFO ] [Nat]Absence check using state equation in 516 ms returned sat
[2021-05-18 23:13:03] [INFO ] State equation strengthened by 78 read => feed constraints.
[2021-05-18 23:13:03] [INFO ] [Nat]Added 78 Read/Feed constraints in 265 ms returned sat
[2021-05-18 23:13:03] [INFO ] Deduced a trap composed of 39 places in 213 ms
[2021-05-18 23:13:04] [INFO ] Deduced a trap composed of 12 places in 316 ms
[2021-05-18 23:13:04] [INFO ] Deduced a trap composed of 39 places in 44 ms
[2021-05-18 23:13:04] [INFO ] Trap strengthening (SAT) tested/added 4/3 trap constraints in 671 ms
[2021-05-18 23:13:04] [INFO ] Computed and/alt/rep : 585/7901/573 causal constraints in 59 ms.
[2021-05-18 23:13:21] [INFO ] Added : 545 causal constraints over 109 iterations in 17245 ms. Result :unknown
FORMULA PolyORBLF-PT-S02J04T06-ReachabilityCardinality-02 TRUE TECHNIQUES STRUCTURAL_REDUCTION TOPOLOGICAL SAT_SMT
Incomplete Parikh walk after 279600 steps, including 1000 resets, run finished after 750 ms. (steps per millisecond=372 ) properties seen :[0] could not realise parikh vector
Support contains 4 out of 313 places. Attempting structural reductions.
Starting structural reductions, iteration 0 : 313/313 places, 587/587 transitions.
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Iterating post reduction 0 with 2 rules applied. Total rules applied 2 place count 313 transition count 585
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 4 place count 311 transition count 585
Performed 10 Post agglomeration using F-continuation condition.Transition count delta: 10
Deduced a syphon composed of 10 places in 0 ms
Reduce places removed 10 places and 0 transitions.
Iterating global reduction 2 with 20 rules applied. Total rules applied 24 place count 301 transition count 575
Applied a total of 24 rules in 19 ms. Remains 301 /313 variables (removed 12) and now considering 575/587 (removed 12) transitions.
Finished structural reductions, in 1 iterations. Remains : 301/313 places, 575/587 transitions.
Incomplete random walk after 1000000 steps, including 593 resets, run finished after 2131 ms. (steps per millisecond=469 ) properties seen :[0]
Incomplete Best-First random walk after 1000000 steps, including 251 resets, run finished after 1179 ms. (steps per millisecond=848 ) properties seen :[0]
Interrupted probabilistic random walk after 4597890 steps, run timeout after 30001 ms. (steps per millisecond=153 ) properties seen :[0]
Probabilistic random walk after 4597890 steps, saw 1737277 distinct states, run finished after 30013 ms. (steps per millisecond=153 ) properties seen :[0]
[2021-05-18 23:13:55] [INFO ] Flow matrix only has 563 transitions (discarded 12 similar events)
// Phase 1: matrix 563 rows 301 cols
[2021-05-18 23:13:55] [INFO ] Computed 44 place invariants in 5 ms
[2021-05-18 23:13:55] [INFO ] [Real]Absence check using 15 positive place invariants in 12 ms returned sat
[2021-05-18 23:13:55] [INFO ] [Real]Absence check using 15 positive and 29 generalized place invariants in 25 ms returned sat
[2021-05-18 23:13:55] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-18 23:13:56] [INFO ] [Real]Absence check using state equation in 829 ms returned sat
[2021-05-18 23:13:56] [INFO ] Solution in real domain found non-integer solution.
[2021-05-18 23:13:56] [INFO ] [Nat]Absence check using 15 positive place invariants in 9 ms returned sat
[2021-05-18 23:13:56] [INFO ] [Nat]Absence check using 15 positive and 29 generalized place invariants in 14 ms returned sat
[2021-05-18 23:13:56] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2021-05-18 23:13:57] [INFO ] [Nat]Absence check using state equation in 563 ms returned sat
[2021-05-18 23:13:57] [INFO ] State equation strengthened by 78 read => feed constraints.
[2021-05-18 23:13:57] [INFO ] [Nat]Added 78 Read/Feed constraints in 416 ms returned sat
[2021-05-18 23:13:57] [INFO ] Deduced a trap composed of 37 places in 136 ms
[2021-05-18 23:13:58] [INFO ] Deduced a trap composed of 37 places in 145 ms
[2021-05-18 23:13:58] [INFO ] Deduced a trap composed of 30 places in 169 ms
[2021-05-18 23:13:58] [INFO ] Trap strengthening (SAT) tested/added 4/3 trap constraints in 536 ms
[2021-05-18 23:13:58] [INFO ] Computed and/alt/rep : 573/7889/561 causal constraints in 69 ms.
[2021-05-18 23:14:13] [INFO ] Added : 520 causal constraints over 104 iterations in 15315 ms. Result :sat
[2021-05-18 23:14:13] [INFO ] Deduced a trap composed of 36 places in 129 ms
[2021-05-18 23:14:15] [INFO ] Deduced a trap composed of 92 places in 163 ms
[2021-05-18 23:14:15] [INFO ] Deduced a trap composed of 36 places in 23 ms
[2021-05-18 23:14:15] [INFO ] Trap strengthening (SAT) tested/added 4/3 trap constraints in 1968 ms
Attempting to minimize the solution found.
Minimization took 140 ms.
Incomplete Parikh walk after 161100 steps, including 1000 resets, run finished after 494 ms. (steps per millisecond=326 ) properties seen :[0] could not realise parikh vector
Support contains 4 out of 301 places. Attempting structural reductions.
Starting structural reductions, iteration 0 : 301/301 places, 575/575 transitions.
Applied a total of 0 rules in 10 ms. Remains 301 /301 variables (removed 0) and now considering 575/575 (removed 0) transitions.
Finished structural reductions, in 1 iterations. Remains : 301/301 places, 575/575 transitions.
Starting structural reductions, iteration 0 : 301/301 places, 575/575 transitions.
Applied a total of 0 rules in 9 ms. Remains 301 /301 variables (removed 0) and now considering 575/575 (removed 0) transitions.
[2021-05-18 23:14:16] [INFO ] Flow matrix only has 563 transitions (discarded 12 similar events)
// Phase 1: matrix 563 rows 301 cols
[2021-05-18 23:14:16] [INFO ] Computed 44 place invariants in 6 ms
[2021-05-18 23:14:17] [INFO ] Implicit Places using invariants in 750 ms returned [74, 150, 170, 172, 266, 275]
Discarding 6 places :
Implicit Place search using SMT only with invariants took 764 ms to find 6 implicit places.
[2021-05-18 23:14:17] [INFO ] Redundant transitions in 26 ms returned []
[2021-05-18 23:14:17] [INFO ] Flow matrix only has 563 transitions (discarded 12 similar events)
// Phase 1: matrix 563 rows 295 cols
[2021-05-18 23:14:17] [INFO ] Computed 38 place invariants in 6 ms
[2021-05-18 23:14:19] [INFO ] Dead Transitions using invariants and state equation in 2567 ms returned []
Starting structural reductions, iteration 1 : 295/301 places, 575/575 transitions.
Symmetric choice reduction at 0 with 6 rule applications. Total rules 6 place count 295 transition count 575
Deduced a syphon composed of 6 places in 10 ms
Reduce places removed 6 places and 6 transitions.
Iterating global reduction 0 with 12 rules applied. Total rules applied 18 place count 289 transition count 569
Applied a total of 18 rules in 31 ms. Remains 289 /295 variables (removed 6) and now considering 569/575 (removed 6) transitions.
[2021-05-18 23:14:19] [INFO ] Flow matrix only has 557 transitions (discarded 12 similar events)
// Phase 1: matrix 557 rows 289 cols
[2021-05-18 23:14:19] [INFO ] Computed 38 place invariants in 19 ms
[2021-05-18 23:14:20] [INFO ] Implicit Places using invariants in 570 ms returned []
[2021-05-18 23:14:20] [INFO ] Flow matrix only has 557 transitions (discarded 12 similar events)
// Phase 1: matrix 557 rows 289 cols
[2021-05-18 23:14:20] [INFO ] Computed 38 place invariants in 7 ms
[2021-05-18 23:14:20] [INFO ] State equation strengthened by 78 read => feed constraints.
[2021-05-18 23:14:25] [INFO ] Implicit Places using invariants and state equation in 4824 ms returned []
Implicit Place search using SMT with State Equation took 5396 ms to find 0 implicit places.
Finished structural reductions, in 2 iterations. Remains : 289/301 places, 569/575 transitions.
Incomplete random walk after 1000000 steps, including 605 resets, run finished after 2042 ms. (steps per millisecond=489 ) properties seen :[0]
Incomplete Best-First random walk after 1000001 steps, including 231 resets, run finished after 1133 ms. (steps per millisecond=882 ) properties seen :[0]
Interrupted probabilistic random walk after 3880492 steps, run timeout after 30001 ms. (steps per millisecond=129 ) properties seen :[0]
Probabilistic random walk after 3880492 steps, saw 1525926 distinct states, run finished after 30002 ms. (steps per millisecond=129 ) properties seen :[0]
[2021-05-18 23:14:58] [INFO ] Flow matrix only has 557 transitions (discarded 12 similar events)
// Phase 1: matrix 557 rows 289 cols
[2021-05-18 23:14:58] [INFO ] Computed 38 place invariants in 11 ms
[2021-05-18 23:14:58] [INFO ] [Real]Absence check using 14 positive place invariants in 9 ms returned sat
[2021-05-18 23:14:58] [INFO ] [Real]Absence check using 14 positive and 24 generalized place invariants in 11 ms returned sat
[2021-05-18 23:14:58] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-18 23:14:58] [INFO ] [Real]Absence check using state equation in 500 ms returned sat
[2021-05-18 23:14:58] [INFO ] Solution in real domain found non-integer solution.
[2021-05-18 23:14:58] [INFO ] [Nat]Absence check using 14 positive place invariants in 30 ms returned sat
[2021-05-18 23:14:58] [INFO ] [Nat]Absence check using 14 positive and 24 generalized place invariants in 11 ms returned sat
[2021-05-18 23:14:58] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2021-05-18 23:14:59] [INFO ] [Nat]Absence check using state equation in 745 ms returned sat
[2021-05-18 23:14:59] [INFO ] State equation strengthened by 78 read => feed constraints.
[2021-05-18 23:15:00] [INFO ] [Nat]Added 78 Read/Feed constraints in 333 ms returned sat
[2021-05-18 23:15:00] [INFO ] Deduced a trap composed of 11 places in 157 ms
[2021-05-18 23:15:00] [INFO ] Deduced a trap composed of 36 places in 224 ms
[2021-05-18 23:15:00] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 446 ms
[2021-05-18 23:15:00] [INFO ] Computed and/alt/rep : 567/7870/555 causal constraints in 24 ms.
[2021-05-18 23:15:13] [INFO ] Added : 485 causal constraints over 97 iterations in 12857 ms. Result :sat
[2021-05-18 23:15:14] [INFO ] Deduced a trap composed of 88 places in 1319 ms
[2021-05-18 23:15:15] [INFO ] Deduced a trap composed of 36 places in 141 ms
[2021-05-18 23:15:15] [INFO ] Deduced a trap composed of 36 places in 33 ms
[2021-05-18 23:15:15] [INFO ] Deduced a trap composed of 37 places in 21 ms
[2021-05-18 23:15:15] [INFO ] Trap strengthening (SAT) tested/added 5/4 trap constraints in 2304 ms
Attempting to minimize the solution found.
Minimization took 144 ms.
Incomplete Parikh walk after 172600 steps, including 1000 resets, run finished after 395 ms. (steps per millisecond=436 ) properties seen :[0] could not realise parikh vector
Support contains 4 out of 289 places. Attempting structural reductions.
Starting structural reductions, iteration 0 : 289/289 places, 569/569 transitions.
Applied a total of 0 rules in 9 ms. Remains 289 /289 variables (removed 0) and now considering 569/569 (removed 0) transitions.
Finished structural reductions, in 1 iterations. Remains : 289/289 places, 569/569 transitions.
Starting structural reductions, iteration 0 : 289/289 places, 569/569 transitions.
Applied a total of 0 rules in 8 ms. Remains 289 /289 variables (removed 0) and now considering 569/569 (removed 0) transitions.
[2021-05-18 23:15:16] [INFO ] Flow matrix only has 557 transitions (discarded 12 similar events)
// Phase 1: matrix 557 rows 289 cols
[2021-05-18 23:15:16] [INFO ] Computed 38 place invariants in 5 ms
[2021-05-18 23:15:16] [INFO ] Implicit Places using invariants in 626 ms returned []
[2021-05-18 23:15:16] [INFO ] Flow matrix only has 557 transitions (discarded 12 similar events)
// Phase 1: matrix 557 rows 289 cols
[2021-05-18 23:15:16] [INFO ] Computed 38 place invariants in 9 ms
[2021-05-18 23:15:17] [INFO ] State equation strengthened by 78 read => feed constraints.
[2021-05-18 23:15:21] [INFO ] Implicit Places using invariants and state equation in 4297 ms returned []
Implicit Place search using SMT with State Equation took 4931 ms to find 0 implicit places.
[2021-05-18 23:15:21] [INFO ] Redundant transitions in 9 ms returned []
[2021-05-18 23:15:21] [INFO ] Flow matrix only has 557 transitions (discarded 12 similar events)
// Phase 1: matrix 557 rows 289 cols
[2021-05-18 23:15:21] [INFO ] Computed 38 place invariants in 6 ms
[2021-05-18 23:15:22] [INFO ] Dead Transitions using invariants and state equation in 912 ms returned []
Finished structural reductions, in 1 iterations. Remains : 289/289 places, 569/569 transitions.
Incomplete random walk after 100000 steps, including 66 resets, run finished after 239 ms. (steps per millisecond=418 ) properties seen :[0]
[2021-05-18 23:15:22] [INFO ] Flow matrix only has 557 transitions (discarded 12 similar events)
// Phase 1: matrix 557 rows 289 cols
[2021-05-18 23:15:22] [INFO ] Computed 38 place invariants in 6 ms
[2021-05-18 23:15:22] [INFO ] [Real]Absence check using 14 positive place invariants in 10 ms returned sat
[2021-05-18 23:15:22] [INFO ] [Real]Absence check using 14 positive and 24 generalized place invariants in 14 ms returned sat
[2021-05-18 23:15:22] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-18 23:15:22] [INFO ] [Real]Absence check using state equation in 413 ms returned sat
[2021-05-18 23:15:22] [INFO ] Solution in real domain found non-integer solution.
[2021-05-18 23:15:22] [INFO ] [Nat]Absence check using 14 positive place invariants in 44 ms returned sat
[2021-05-18 23:15:22] [INFO ] [Nat]Absence check using 14 positive and 24 generalized place invariants in 12 ms returned sat
[2021-05-18 23:15:22] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2021-05-18 23:15:23] [INFO ] [Nat]Absence check using state equation in 402 ms returned sat
[2021-05-18 23:15:23] [INFO ] State equation strengthened by 78 read => feed constraints.
[2021-05-18 23:15:23] [INFO ] [Nat]Added 78 Read/Feed constraints in 339 ms returned sat
[2021-05-18 23:15:23] [INFO ] Deduced a trap composed of 11 places in 218 ms
[2021-05-18 23:15:24] [INFO ] Deduced a trap composed of 36 places in 56 ms
[2021-05-18 23:15:24] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 349 ms
[2021-05-18 23:15:24] [INFO ] Computed and/alt/rep : 567/7870/555 causal constraints in 27 ms.
[2021-05-18 23:15:36] [INFO ] Added : 485 causal constraints over 97 iterations in 12626 ms. Result :sat
[2021-05-18 23:15:36] [INFO ] Deduced a trap composed of 88 places in 271 ms
[2021-05-18 23:15:37] [INFO ] Deduced a trap composed of 36 places in 46 ms
[2021-05-18 23:15:37] [INFO ] Deduced a trap composed of 36 places in 117 ms
[2021-05-18 23:15:37] [INFO ] Deduced a trap composed of 37 places in 99 ms
[2021-05-18 23:15:38] [INFO ] Trap strengthening (SAT) tested/added 5/4 trap constraints in 1373 ms
Ensure Unique test removed 12 transitions
Reduce isomorphic transitions removed 12 transitions.
Iterating post reduction 0 with 12 rules applied. Total rules applied 12 place count 289 transition count 557
Performed 6 Post agglomeration using F-continuation condition.Transition count delta: -24
Deduced a syphon composed of 6 places in 1 ms
Reduce places removed 6 places and 0 transitions.
Iterating global reduction 1 with 12 rules applied. Total rules applied 24 place count 283 transition count 581
Free-agglomeration rule applied 6 times.
Iterating global reduction 1 with 6 rules applied. Total rules applied 30 place count 283 transition count 575
Reduce places removed 6 places and 0 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 36 place count 277 transition count 575
Free-agglomeration rule (complex) applied 8 times.
Iterating global reduction 2 with 8 rules applied. Total rules applied 44 place count 277 transition count 567
Reduce places removed 8 places and 0 transitions.
Iterating post reduction 2 with 8 rules applied. Total rules applied 52 place count 269 transition count 567
Drop transitions removed 24 transitions
Redundant transition composition rules discarded 24 transitions
Iterating global reduction 3 with 24 rules applied. Total rules applied 76 place count 269 transition count 543
Applied a total of 76 rules in 57 ms. Remains 269 /289 variables (removed 20) and now considering 543/569 (removed 26) transitions.
// Phase 1: matrix 543 rows 269 cols
[2021-05-18 23:15:38] [INFO ] Computed 38 place invariants in 5 ms
[2021-05-18 23:15:38] [INFO ] [Real]Absence check using 17 positive place invariants in 12 ms returned sat
[2021-05-18 23:15:38] [INFO ] [Real]Absence check using 17 positive and 21 generalized place invariants in 11 ms returned sat
[2021-05-18 23:15:38] [INFO ] [Real]Adding state equation constraints to refine reachable states.
[2021-05-18 23:15:38] [INFO ] [Real]Absence check using state equation in 447 ms returned sat
[2021-05-18 23:15:38] [INFO ] Solution in real domain found non-integer solution.
[2021-05-18 23:15:38] [INFO ] [Nat]Absence check using 17 positive place invariants in 42 ms returned sat
[2021-05-18 23:15:38] [INFO ] [Nat]Absence check using 17 positive and 21 generalized place invariants in 29 ms returned sat
[2021-05-18 23:15:38] [INFO ] [Nat]Adding state equation constraints to refine reachable states.
[2021-05-18 23:15:39] [INFO ] [Nat]Absence check using state equation in 693 ms returned sat
[2021-05-18 23:15:39] [INFO ] Deduced a trap composed of 80 places in 249 ms
[2021-05-18 23:15:39] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 327 ms
[2021-05-18 23:15:39] [INFO ] Computed and/alt/rep : 540/7335/540 causal constraints in 29 ms.
[2021-05-18 23:15:50] [INFO ] Added : 505 causal constraints over 101 iterations in 10742 ms. Result :sat
[2021-05-18 23:15:51] [INFO ] Deduced a trap composed of 33 places in 1141 ms
[2021-05-18 23:15:52] [INFO ] Deduced a trap composed of 113 places in 214 ms
[2021-05-18 23:15:52] [INFO ] Deduced a trap composed of 34 places in 359 ms
[2021-05-18 23:15:52] [INFO ] Deduced a trap composed of 84 places in 176 ms
[2021-05-18 23:15:53] [INFO ] Deduced a trap composed of 33 places in 37 ms
[2021-05-18 23:15:53] [INFO ] Trap strengthening (SAT) tested/added 6/5 trap constraints in 3254 ms
Attempting to minimize the solution found.
Minimization took 177 ms.
[2021-05-18 23:15:53] [INFO ] Export to MCC properties in file /home/mcc/execution/ReachabilityCardinality.sr.xml took 7 ms.
[2021-05-18 23:15:54] [INFO ] Export to PNML in file /home/mcc/execution/model.sr.pnml took 8 ms.
[2021-05-18 23:15:54] [INFO ] Flatten gal took : 130 ms
info: Time: 3600 - MCC
vrfy: Checking ReachabilityCardinality @ PolyORBLF-PT-S02J04T06 @ 3570 seconds
vrfy: finished
info: timeLeft: 3567
rslt: Output for ReachabilityCardinality @ PolyORBLF-PT-S02J04T06

{
"build":
{
"architecture": 64,
"assertions": false,
"build_hostname": "mcc2019",
"build_system": "x86_64-unknown-linux-gnu",
"optimizations": true,
"package_version": "2.0",
"svn_version": "3189M"
},
"call":
{
"exec_host": "mcc2020",
"localtimelimit": 0,
"markinglimit": null,
"parameters":
[
"--pnmlnet",
"model.pnml",
"--xmlformula",
"--formula=ReachabilityCardinality.xml",
"--mcc",
"--donotcomputecapacities",
"--encoder=simplecompressed",
"--check=modelchecking",
"--stubborn=tarjan",
"--stateequation=par",
"--timelimit=3570",
"--localtimelimit=0",
"--json=ReachabilityCardinality.json",
"--jsoninclude=formula,formulastat,net"
],
"starttime": "Tue May 18 23:15:54 2021
",
"timelimit": 3570
},
"child": null,
"exit":
{
"error": null,
"localtimelimitreached": true,
"memory": 20692,
"runtime": 3.000000,
"signal": null,
"timelimitreached": false
},
"files":
{
"formula": "ReachabilityCardinality.xml",
"net": "model.pnml"
},
"formula":
{
"count":
{
"A": 1,
"E": 0,
"F": 0,
"G": 1,
"U": 0,
"X": 0,
"aconj": 0,
"adisj": 1,
"aneg": 0,
"comp": 2,
"cont": 0,
"dl": 0,
"fir": 0,
"nodl": 0,
"place_references": 4,
"taut": 0,
"tconj": 0,
"tdisj": 0,
"tneg": 0,
"transition_references": 0,
"unfir": 0,
"visible_places": 4,
"visible_transitions": 0
},
"processed": "A (G (((p160 <= p175) OR (p103 <= p253))))",
"processed_size": 43,
"rewrites": 2,
"skeleton": "A(G(**))"
},
"net":
{
"arcs": 2883,
"conflict_clusters": 20,
"places": 289,
"places_significant": 251,
"singleton_clusters": 0,
"transitions": 569
},
"task":
{
"search":
{
"store":
{
"encoder": "simple compression",
"type": "prefix"
},
"stubborn":
{
"type": "reachability preserving/insertion"
},
"threads": 1,
"type": "dfs"
},
"stateequation":
{
"literals": 2,
"problems": 2
},
"type": "invariance",
"workflow": "stateequation||search"
}
}
lola: LoLA will run for 3570 seconds at most (--timelimit)
lola: NET
lola: input: PNML file (--pnml)
lola: reading net from model.pnml
lola: reading pnml
lola: PNML file contains place/transition net
lola: finished parsing
lola: closed net file model.pnml
lola: 858/268435456 symbol table entries, 0 collisions
lola: preprocessing...
lola: Size of bit vector: 9248
lola: finding significant places
lola: 289 places, 569 transitions, 251 significant places
lola: compute conflict clusters
lola: computed conflict clusters
lola: Computing conflicting sets
lola: Computing back conflicting sets
lola: TASK
lola: Reading formula in XML format (--xmlformula)
lola: reading pnml
lola: reading formula from ReachabilityCardinality.xml
lola: A (G (((p160 <= p175) OR (p103 <= p253))))
lola: checking invariance
lola: Planning: workflow for reachability check: stateequation||search (--findpath=off)
lola: rewrite Frontend/Parser/formula_rewrite.k:721
lola: rewrite Frontend/Parser/formula_rewrite.k:787
lola: processed formula: A (G (((p160 <= p175) OR (p103 <= p253))))
lola: processed formula length: 43
lola: 2 rewrites
lola: closed formula file ReachabilityCardinality.xml
lola: STORE
lola: using a simple compression encoder (--encoder=simplecompressed)
lola: using a prefix tree store (--store=prefix)
lola: SEARCH (state space)
lola: state space: using reachability graph (--search=depth)
lola: state space: using reachability preserving stubborn set method with insertion algorithm (--stubborn=tarjan)
lola: built state equation task
lola: RUNNING
lola: subprocess will run for 0 seconds at most (--localtimelimit)
lola: state equation task get result started, id 0
lola: rewrite Frontend/Parser/formula_rewrite.k:721
lola: rewrite Frontend/Parser/formula_rewrite.k:787
lola: state equation task get result rewrite finished id 0
lola: state equation task get result unparse finished++ id 0
lola: formula 0: ((p175 + 1 <= p160) AND (p253 + 1 <= p103))
lola: state equation task get result unparse finished id 0
lola: state equation: Generated DNF with 2 literals and 1 conjunctive subformulas
lola: local time limit reached - aborting
lola: state equation: write sara problem file to ReachabilityCardinality-0.sara
lola: state equation: calling and running sara
lola: memory consumption: 20692 KB
lola: time consumption: 3 seconds
lola: print data as JSON (--json)
lola: writing JSON to ReachabilityCardinality.json
lola: closed JSON file ReachabilityCardinality.json
rslt: finished

--------------------
content from stderr:

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="PolyORBLF-PT-S02J04T06"
export BK_EXAMINATION="ReachabilityCardinality"
export BK_TOOL="gold2020"
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 2-4028"
echo " Executing tool gold2020"
echo " Input is PolyORBLF-PT-S02J04T06, examination is ReachabilityCardinality"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r170-oct2-162089287100111"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/PolyORBLF-PT-S02J04T06.tgz
mv PolyORBLF-PT-S02J04T06 execution
cd execution
if [ "ReachabilityCardinality" = "ReachabilityDeadlock" ] || [ "ReachabilityCardinality" = "UpperBounds" ] || [ "ReachabilityCardinality" = "QuasiLiveness" ] || [ "ReachabilityCardinality" = "StableMarking" ] || [ "ReachabilityCardinality" = "Liveness" ] || [ "ReachabilityCardinality" = "OneSafe" ] || [ "ReachabilityCardinality" = "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 [ "ReachabilityCardinality" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityCardinality" != "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 "ReachabilityCardinality.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityCardinality.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityCardinality.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 '' ReachabilityCardinality.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "ReachabilityCardinality" = "ReachabilityDeadlock" ] || [ "ReachabilityCardinality" = "QuasiLiveness" ] || [ "ReachabilityCardinality" = "StableMarking" ] || [ "ReachabilityCardinality" = "Liveness" ] || [ "ReachabilityCardinality" = "OneSafe" ] ; then
echo "FORMULA_NAME ReachabilityCardinality"
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 ;