About the Execution of ITS-Tools for Szymanski-PT-b06
Execution Summary | |||||
Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
0.000 | 766462.00 | 0.00 | 0.00 | FTFF?TTTFFFTFFFF | normal |
Execution Chart
Sorry, for this execution, no execution chart could be reported.
Trace from the execution
Formatting '/data/fkordon/mcc2024-input.r400-tall-171690533300879.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 itstools
Input is Szymanski-PT-b06, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r400-tall-171690533300879
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 4.1M
-rw-r--r-- 1 mcc users 7.7K May 14 13:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 90K May 14 13:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.2K May 14 13:22 CTLFireability.txt
-rw-r--r-- 1 mcc users 55K May 14 13:22 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.6K May 19 07:17 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K May 19 16:45 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.0K May 19 07:36 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K May 19 19:27 LTLFireability.xml
-rw-r--r-- 1 mcc users 11K May 14 13:22 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 110K May 14 13:22 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.7K Apr 11 15:05 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 85K Apr 11 15:05 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.5K May 19 07:16 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.6K May 19 15:31 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 18 16:43 equiv_col
-rw-r--r-- 1 mcc users 4 May 18 16:43 instance
-rw-r--r-- 1 mcc users 6 May 18 16:43 iscolored
-rw-r--r-- 1 mcc users 3.7M May 18 16:43 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 Szymanski-PT-b06-ReachabilityFireability-2024-00
FORMULA_NAME Szymanski-PT-b06-ReachabilityFireability-2024-01
FORMULA_NAME Szymanski-PT-b06-ReachabilityFireability-2024-02
FORMULA_NAME Szymanski-PT-b06-ReachabilityFireability-2024-03
FORMULA_NAME Szymanski-PT-b06-ReachabilityFireability-2024-04
FORMULA_NAME Szymanski-PT-b06-ReachabilityFireability-2024-05
FORMULA_NAME Szymanski-PT-b06-ReachabilityFireability-2024-06
FORMULA_NAME Szymanski-PT-b06-ReachabilityFireability-2024-07
FORMULA_NAME Szymanski-PT-b06-ReachabilityFireability-2024-08
FORMULA_NAME Szymanski-PT-b06-ReachabilityFireability-2024-09
FORMULA_NAME Szymanski-PT-b06-ReachabilityFireability-2024-10
FORMULA_NAME Szymanski-PT-b06-ReachabilityFireability-2024-11
FORMULA_NAME Szymanski-PT-b06-ReachabilityFireability-2024-12
FORMULA_NAME Szymanski-PT-b06-ReachabilityFireability-2024-13
FORMULA_NAME Szymanski-PT-b06-ReachabilityFireability-2024-14
FORMULA_NAME Szymanski-PT-b06-ReachabilityFireability-2024-15
=== Now, execution of the tool begins
BK_START 1717091087195
Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=ReachabilityFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=Szymanski-PT-b06
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
ReachabilityFireability PT
Running Version 202405141337
[2024-05-30 17:44:48] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, ReachabilityFireability, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2024-05-30 17:44:48] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2024-05-30 17:44:48] [INFO ] Load time of PNML (sax parser for PT used): 340 ms
[2024-05-30 17:44:48] [INFO ] Transformed 568 places.
[2024-05-30 17:44:48] [INFO ] Transformed 8320 transitions.
[2024-05-30 17:44:48] [INFO ] Parsed PT model containing 568 places and 8320 transitions and 33408 arcs in 482 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 42 ms.
Working with output stream class java.io.PrintStream
Deduced a syphon composed of 260 places in 17 ms
Reduce places removed 260 places and 256 transitions.
FORMULA Szymanski-PT-b06-ReachabilityFireability-2024-14 FALSE TECHNIQUES TOPOLOGICAL INITIAL_STATE
RANDOM walk for 40008 steps (8 resets) in 2093 ms. (19 steps per ms) remains 14/15 properties
FORMULA Szymanski-PT-b06-ReachabilityFireability-2024-01 TRUE TECHNIQUES TOPOLOGICAL RANDOM_WALK
BEST_FIRST walk for 40003 steps (9 resets) in 1910 ms. (20 steps per ms) remains 14/14 properties
BEST_FIRST walk for 40004 steps (11 resets) in 393 ms. (101 steps per ms) remains 14/14 properties
BEST_FIRST walk for 40004 steps (9 resets) in 228 ms. (174 steps per ms) remains 13/14 properties
FORMULA Szymanski-PT-b06-ReachabilityFireability-2024-07 TRUE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 40002 steps (13 resets) in 245 ms. (162 steps per ms) remains 12/13 properties
FORMULA Szymanski-PT-b06-ReachabilityFireability-2024-12 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 40004 steps (13 resets) in 174 ms. (228 steps per ms) remains 12/12 properties
[2024-05-30 17:44:50] [INFO ] Flatten gal took : 941 ms
BEST_FIRST walk for 40004 steps (10 resets) in 189 ms. (210 steps per ms) remains 11/12 properties
FORMULA Szymanski-PT-b06-ReachabilityFireability-2024-13 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 40003 steps (8 resets) in 227 ms. (175 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40001 steps (11 resets) in 627 ms. (63 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (9 resets) in 228 ms. (174 steps per ms) remains 11/11 properties
BEST_FIRST walk for 40004 steps (11 resets) in 106 ms. (373 steps per ms) remains 10/11 properties
FORMULA Szymanski-PT-b06-ReachabilityFireability-2024-09 FALSE TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 40003 steps (11 resets) in 302 ms. (132 steps per ms) remains 10/10 properties
[2024-05-30 17:44:51] [INFO ] Flow matrix only has 2733 transitions (discarded 5331 similar events)
[2024-05-30 17:44:51] [INFO ] Flatten gal took : 556 ms
// Phase 1: matrix 2733 rows 308 cols
[2024-05-30 17:44:51] [INFO ] Computed 3 invariants in 67 ms
[2024-05-30 17:44:51] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality16814899849194896251.gal : 110 ms
[2024-05-30 17:44:51] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality3348780464575992188.prop : 3 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202405141337/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality16814899849194896251.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality3348780464575992188.prop' '--nowitness' '--gen-order' 'FOLLOW'
[2024-05-30 17:44:51] [INFO ] State equation strengthened by 147 read => feed constraints.
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202405141337/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
Loading property file /tmp/ReachabilityCardinality3348780464575992188.prop.
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/154 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 10 unsolved
Problem Szymanski-PT-b06-ReachabilityFireability-2024-00 is UNSAT
FORMULA Szymanski-PT-b06-ReachabilityFireability-2024-00 FALSE TECHNIQUES SMT_REFINEMENT
Problem Szymanski-PT-b06-ReachabilityFireability-2024-02 is UNSAT
FORMULA Szymanski-PT-b06-ReachabilityFireability-2024-02 FALSE TECHNIQUES SMT_REFINEMENT
Problem Szymanski-PT-b06-ReachabilityFireability-2024-03 is UNSAT
FORMULA Szymanski-PT-b06-ReachabilityFireability-2024-03 FALSE TECHNIQUES SMT_REFINEMENT
Problem Szymanski-PT-b06-ReachabilityFireability-2024-08 is UNSAT
FORMULA Szymanski-PT-b06-ReachabilityFireability-2024-08 FALSE TECHNIQUES SMT_REFINEMENT
At refinement iteration 1 (OVERLAPS) 153/307 variables, 2/2 constraints. Problems are: Problem set: 4 solved, 6 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/307 variables, 0/2 constraints. Problems are: Problem set: 4 solved, 6 unsolved
At refinement iteration 3 (OVERLAPS) 1/308 variables, 1/3 constraints. Problems are: Problem set: 4 solved, 6 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/308 variables, 0/3 constraints. Problems are: Problem set: 4 solved, 6 unsolved
At refinement iteration 5 (OVERLAPS) 2733/3041 variables, 308/311 constraints. Problems are: Problem set: 4 solved, 6 unsolved
SDD proceeding with computation,10 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,10 properties remain. new max is 8
SDD size :5 after 18
SDD proceeding with computation,10 properties remain. new max is 16
SDD size :18 after 80
SDD proceeding with computation,10 properties remain. new max is 32
SDD size :80 after 714
SDD proceeding with computation,10 properties remain. new max is 64
SDD size :714 after 11559
SDD proceeding with computation,10 properties remain. new max is 128
SDD size :11559 after 25722
At refinement iteration 6 (INCLUDED_ONLY) 0/3041 variables, 147/458 constraints. Problems are: Problem set: 4 solved, 6 unsolved
SDD proceeding with computation,10 properties remain. new max is 256
SDD size :25722 after 150696
SDD proceeding with computation,10 properties remain. new max is 512
SDD size :150696 after 266659
At refinement iteration 7 (INCLUDED_ONLY) 0/3041 variables, 0/458 constraints. Problems are: Problem set: 4 solved, 6 unsolved
At refinement iteration 8 (OVERLAPS) 0/3041 variables, 0/458 constraints. Problems are: Problem set: 4 solved, 6 unsolved
No progress, stopping.
After SMT solving in domain Real declared 3041/3041 variables, and 458 constraints, problems are : Problem set: 4 solved, 6 unsolved in 5044 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 308/308 constraints, ReadFeed: 147/147 constraints, PredecessorRefiner: 10/2 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 4 solved, 6 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/104 variables, 0/0 constraints. Problems are: Problem set: 4 solved, 6 unsolved
At refinement iteration 1 (OVERLAPS) 203/307 variables, 2/2 constraints. Problems are: Problem set: 4 solved, 6 unsolved
[2024-05-30 17:44:57] [INFO ] Deduced a trap composed of 73 places in 503 ms of which 21 ms to minimize.
SDD proceeding with computation,10 properties remain. new max is 1024
SDD size :266659 after 305693
[2024-05-30 17:44:58] [INFO ] Deduced a trap composed of 135 places in 479 ms of which 2 ms to minimize.
[2024-05-30 17:44:58] [INFO ] Deduced a trap composed of 130 places in 507 ms of which 14 ms to minimize.
[2024-05-30 17:44:59] [INFO ] Deduced a trap composed of 139 places in 614 ms of which 3 ms to minimize.
[2024-05-30 17:44:59] [INFO ] Deduced a trap composed of 73 places in 509 ms of which 2 ms to minimize.
[2024-05-30 17:45:00] [INFO ] Deduced a trap composed of 73 places in 482 ms of which 2 ms to minimize.
[2024-05-30 17:45:00] [INFO ] Deduced a trap composed of 196 places in 477 ms of which 2 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/307 variables, 7/9 constraints. Problems are: Problem set: 4 solved, 6 unsolved
Reachability property Szymanski-PT-b06-ReachabilityFireability-2024-05 is true.
FORMULA Szymanski-PT-b06-ReachabilityFireability-2024-05 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
At refinement iteration 3 (INCLUDED_ONLY) 0/307 variables, 0/9 constraints. Problems are: Problem set: 5 solved, 5 unsolved
At refinement iteration 4 (OVERLAPS) 1/308 variables, 1/10 constraints. Problems are: Problem set: 5 solved, 5 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/308 variables, 0/10 constraints. Problems are: Problem set: 5 solved, 5 unsolved
SDD proceeding with computation,9 properties remain. new max is 1024
SDD size :305693 after 995230
SMT process timed out in 10751ms, After SMT, problems are : Problem set: 5 solved, 5 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 102 out of 308 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 308/308 places, 8064/8064 transitions.
Graph (complete) has 9195 edges and 308 vertex of which 306 are kept as prefixes of interest. Removing 2 places using SCC suffix rule.20 ms
Discarding 2 places :
Also discarding 0 output transitions
Applied a total of 1 rules in 462 ms. Remains 306 /308 variables (removed 2) and now considering 8064/8064 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 483 ms. Remains : 306/308 places, 8064/8064 transitions.
RANDOM walk for 40013 steps (9 resets) in 269 ms. (148 steps per ms) remains 5/5 properties
BEST_FIRST walk for 40002 steps (10 resets) in 133 ms. (298 steps per ms) remains 5/5 properties
BEST_FIRST walk for 40003 steps (13 resets) in 130 ms. (305 steps per ms) remains 5/5 properties
BEST_FIRST walk for 40003 steps (12 resets) in 151 ms. (263 steps per ms) remains 5/5 properties
BEST_FIRST walk for 40004 steps (14 resets) in 100 ms. (396 steps per ms) remains 5/5 properties
BEST_FIRST walk for 40004 steps (10 resets) in 178 ms. (223 steps per ms) remains 5/5 properties
Invariant property Szymanski-PT-b06-ReachabilityFireability-2024-10 does not hold.
FORMULA Szymanski-PT-b06-ReachabilityFireability-2024-10 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
SDD proceeding with computation,8 properties remain. new max is 1024
SDD size :995230 after 3.5589e+06
Interrupted probabilistic random walk after 113412 steps, run timeout after 3001 ms. (steps per millisecond=37 ) properties seen :0 out of 5
Probabilistic random walk after 113412 steps, saw 56237 distinct states, run finished after 3006 ms. (steps per millisecond=37 ) properties seen :0
[2024-05-30 17:45:05] [INFO ] Flow matrix only has 2733 transitions (discarded 5331 similar events)
// Phase 1: matrix 2733 rows 306 cols
[2024-05-30 17:45:05] [INFO ] Computed 1 invariants in 27 ms
[2024-05-30 17:45:05] [INFO ] State equation strengthened by 147 read => feed constraints.
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/76 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 1 (OVERLAPS) 230/306 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/306 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 3 (OVERLAPS) 2733/3039 variables, 306/307 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/3039 variables, 147/454 constraints. Problems are: Problem set: 0 solved, 4 unsolved
SDD proceeding with computation,8 properties remain. new max is 2048
SDD size :3.5589e+06 after 4.38004e+06
Invariant property Szymanski-PT-b06-ReachabilityFireability-2024-15 does not hold.
FORMULA Szymanski-PT-b06-ReachabilityFireability-2024-15 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
At refinement iteration 5 (INCLUDED_ONLY) 0/3039 variables, 0/454 constraints. Problems are: Problem set: 1 solved, 3 unsolved
At refinement iteration 6 (OVERLAPS) 0/3039 variables, 0/454 constraints. Problems are: Problem set: 1 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 3039/3039 variables, and 454 constraints, problems are : Problem set: 1 solved, 3 unsolved in 6183 ms.
Refiners :[Generalized P Invariants (flows): 1/1 constraints, State Equation: 306/306 constraints, ReadFeed: 147/147 constraints, PredecessorRefiner: 4/1 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 1 solved, 3 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/32 variables, 0/0 constraints. Problems are: Problem set: 1 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 274/306 variables, 1/1 constraints. Problems are: Problem set: 1 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/306 variables, 0/1 constraints. Problems are: Problem set: 1 solved, 3 unsolved
At refinement iteration 3 (OVERLAPS) 2733/3039 variables, 306/307 constraints. Problems are: Problem set: 1 solved, 3 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/3039 variables, 147/454 constraints. Problems are: Problem set: 1 solved, 3 unsolved
SDD proceeding with computation,7 properties remain. new max is 2048
SDD size :4.38004e+06 after 6.2752e+06
At refinement iteration 5 (INCLUDED_ONLY) 0/3039 variables, 1/455 constraints. Problems are: Problem set: 1 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/3039 variables, 0/455 constraints. Problems are: Problem set: 1 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 0/3039 variables, 0/455 constraints. Problems are: Problem set: 1 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 3039/3039 variables, and 455 constraints, problems are : Problem set: 1 solved, 3 unsolved in 12678 ms.
Refiners :[Generalized P Invariants (flows): 1/1 constraints, State Equation: 306/306 constraints, ReadFeed: 147/147 constraints, PredecessorRefiner: 3/1 constraints, Known Traps: 0/0 constraints]
After SMT, in 19110ms problems are : Problem set: 1 solved, 3 unsolved
Parikh walk visited 0 properties in 20 ms.
Support contains 32 out of 306 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 306/306 places, 8064/8064 transitions.
Drop transitions (Empty/Sink Transition effects.) removed 111 transitions
Reduce isomorphic transitions removed 111 transitions.
Iterating post reduction 0 with 111 rules applied. Total rules applied 111 place count 306 transition count 7953
Applied a total of 111 rules in 268 ms. Remains 306 /306 variables (removed 0) and now considering 7953/8064 (removed 111) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 269 ms. Remains : 306/306 places, 7953/8064 transitions.
RANDOM walk for 40012 steps (8 resets) in 160 ms. (248 steps per ms) remains 3/3 properties
BEST_FIRST walk for 40004 steps (10 resets) in 146 ms. (272 steps per ms) remains 3/3 properties
BEST_FIRST walk for 40004 steps (11 resets) in 109 ms. (363 steps per ms) remains 3/3 properties
BEST_FIRST walk for 40002 steps (9 resets) in 53 ms. (740 steps per ms) remains 3/3 properties
Interrupted probabilistic random walk after 146196 steps, run timeout after 3001 ms. (steps per millisecond=48 ) properties seen :0 out of 3
Probabilistic random walk after 146196 steps, saw 77384 distinct states, run finished after 3001 ms. (steps per millisecond=48 ) properties seen :0
[2024-05-30 17:45:28] [INFO ] Flow matrix only has 2622 transitions (discarded 5331 similar events)
// Phase 1: matrix 2622 rows 306 cols
[2024-05-30 17:45:28] [INFO ] Computed 1 invariants in 31 ms
[2024-05-30 17:45:28] [INFO ] State equation strengthened by 147 read => feed constraints.
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/32 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 274/306 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/306 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (OVERLAPS) 2622/2928 variables, 306/307 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/2928 variables, 147/454 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/2928 variables, 0/454 constraints. Problems are: Problem set: 0 solved, 3 unsolved
SDD proceeding with computation,7 properties remain. new max is 4096
SDD size :6.2752e+06 after 7.3783e+06
At refinement iteration 6 (OVERLAPS) 0/2928 variables, 0/454 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 2928/2928 variables, and 454 constraints, problems are : Problem set: 0 solved, 3 unsolved in 2507 ms.
Refiners :[Generalized P Invariants (flows): 1/1 constraints, State Equation: 306/306 constraints, ReadFeed: 147/147 constraints, PredecessorRefiner: 3/1 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/32 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 274/306 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/306 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (OVERLAPS) 2622/2928 variables, 306/307 constraints. Problems are: Problem set: 0 solved, 3 unsolved
Reachability property Szymanski-PT-b06-ReachabilityFireability-2024-11 is true.
FORMULA Szymanski-PT-b06-ReachabilityFireability-2024-11 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
At refinement iteration 4 (INCLUDED_ONLY) 0/2928 variables, 147/454 constraints. Problems are: Problem set: 1 solved, 2 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/2928 variables, 0/454 constraints. Problems are: Problem set: 1 solved, 2 unsolved
At refinement iteration 6 (OVERLAPS) 0/2928 variables, 0/454 constraints. Problems are: Problem set: 1 solved, 2 unsolved
No progress, stopping.
After SMT solving in domain Int declared 2928/2928 variables, and 454 constraints, problems are : Problem set: 1 solved, 2 unsolved in 9597 ms.
Refiners :[Generalized P Invariants (flows): 1/1 constraints, State Equation: 306/306 constraints, ReadFeed: 147/147 constraints, PredecessorRefiner: 2/1 constraints, Known Traps: 0/0 constraints]
After SMT, in 12221ms problems are : Problem set: 1 solved, 2 unsolved
Parikh walk visited 0 properties in 695 ms.
Support contains 30 out of 306 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 306/306 places, 7953/7953 transitions.
Drop transitions (Empty/Sink Transition effects.) removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 306 transition count 7952
Applied a total of 1 rules in 348 ms. Remains 306 /306 variables (removed 0) and now considering 7952/7953 (removed 1) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 348 ms. Remains : 306/306 places, 7952/7953 transitions.
RANDOM walk for 40010 steps (8 resets) in 176 ms. (226 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40004 steps (10 resets) in 84 ms. (470 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40003 steps (12 resets) in 100 ms. (396 steps per ms) remains 2/2 properties
Interrupted probabilistic random walk after 144302 steps, run timeout after 3001 ms. (steps per millisecond=48 ) properties seen :0 out of 2
Probabilistic random walk after 144302 steps, saw 77083 distinct states, run finished after 3004 ms. (steps per millisecond=48 ) properties seen :0
[2024-05-30 17:45:44] [INFO ] Flow matrix only has 2621 transitions (discarded 5331 similar events)
// Phase 1: matrix 2621 rows 306 cols
[2024-05-30 17:45:44] [INFO ] Computed 1 invariants in 30 ms
[2024-05-30 17:45:44] [INFO ] State equation strengthened by 147 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/30 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 1 (OVERLAPS) 276/306 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/306 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (OVERLAPS) 2621/2927 variables, 306/307 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/2927 variables, 147/454 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/2927 variables, 0/454 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 6 (OVERLAPS) 0/2927 variables, 0/454 constraints. Problems are: Problem set: 0 solved, 2 unsolved
No progress, stopping.
After SMT solving in domain Real declared 2927/2927 variables, and 454 constraints, problems are : Problem set: 0 solved, 2 unsolved in 2529 ms.
Refiners :[Generalized P Invariants (flows): 1/1 constraints, State Equation: 306/306 constraints, ReadFeed: 147/147 constraints, PredecessorRefiner: 2/0 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 2 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/30 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 1 (OVERLAPS) 276/306 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/306 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 3 (OVERLAPS) 2621/2927 variables, 306/307 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/2927 variables, 147/454 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/2927 variables, 0/454 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 6 (OVERLAPS) 0/2927 variables, 0/454 constraints. Problems are: Problem set: 0 solved, 2 unsolved
No progress, stopping.
After SMT solving in domain Int declared 2927/2927 variables, and 454 constraints, problems are : Problem set: 0 solved, 2 unsolved in 2538 ms.
Refiners :[Generalized P Invariants (flows): 1/1 constraints, State Equation: 306/306 constraints, ReadFeed: 147/147 constraints, PredecessorRefiner: 2/0 constraints, Known Traps: 0/0 constraints]
After SMT, in 5180ms problems are : Problem set: 0 solved, 2 unsolved
Parikh walk visited 0 properties in 575 ms.
Support contains 30 out of 306 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 306/306 places, 7952/7952 transitions.
Applied a total of 0 rules in 206 ms. Remains 306 /306 variables (removed 0) and now considering 7952/7952 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 206 ms. Remains : 306/306 places, 7952/7952 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 306/306 places, 7952/7952 transitions.
Applied a total of 0 rules in 198 ms. Remains 306 /306 variables (removed 0) and now considering 7952/7952 (removed 0) transitions.
[2024-05-30 17:45:50] [INFO ] Flow matrix only has 2621 transitions (discarded 5331 similar events)
[2024-05-30 17:45:50] [INFO ] Invariant cache hit.
[2024-05-30 17:45:51] [INFO ] Implicit Places using invariants in 438 ms returned []
[2024-05-30 17:45:51] [INFO ] Flow matrix only has 2621 transitions (discarded 5331 similar events)
[2024-05-30 17:45:51] [INFO ] Invariant cache hit.
[2024-05-30 17:45:51] [INFO ] State equation strengthened by 147 read => feed constraints.
SDD proceeding with computation,6 properties remain. new max is 4096
SDD size :7.3783e+06 after 1.31513e+07
[2024-05-30 17:46:22] [INFO ] Performed 119/306 implicitness test of which 0 returned IMPLICIT in 30 seconds.
SDD proceeding with computation,6 properties remain. new max is 8192
SDD size :1.31513e+07 after 1.6076e+07
[2024-05-30 17:46:40] [INFO ] Implicit Places using invariants and state equation in 48766 ms returned []
Implicit Place search using SMT with State Equation took 49215 ms to find 0 implicit places.
[2024-05-30 17:46:41] [INFO ] Redundant transitions in 915 ms returned []
Running 7950 sub problems to find dead transitions.
[2024-05-30 17:46:41] [INFO ] Flow matrix only has 2621 transitions (discarded 5331 similar events)
[2024-05-30 17:46:41] [INFO ] Invariant cache hit.
[2024-05-30 17:46:41] [INFO ] State equation strengthened by 147 read => feed constraints.
Reachability property Szymanski-PT-b06-ReachabilityFireability-2024-06 is true.
FORMULA Szymanski-PT-b06-ReachabilityFireability-2024-06 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
At refinement iteration 0 (INCLUDED_ONLY) 0/306 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 7950 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 306/2927 variables, and 1 constraints, problems are : Problem set: 0 solved, 7950 unsolved in 30161 ms.
Refiners :[Generalized P Invariants (flows): 1/1 constraints, State Equation: 0/306 constraints, ReadFeed: 0/147 constraints, PredecessorRefiner: 7950/7950 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 7950 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/306 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 7950 unsolved
SDD proceeding with computation,5 properties remain. new max is 8192
SDD size :1.6076e+07 after 3.16093e+07
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 306/2927 variables, and 1 constraints, problems are : Problem set: 0 solved, 7950 unsolved in 30107 ms.
Refiners :[Generalized P Invariants (flows): 1/1 constraints, State Equation: 0/306 constraints, ReadFeed: 0/147 constraints, PredecessorRefiner: 0/7950 constraints, Known Traps: 0/0 constraints]
After SMT, in 90328ms problems are : Problem set: 0 solved, 7950 unsolved
Search for dead transitions found 0 dead transitions in 90402ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 140770 ms. Remains : 306/306 places, 7952/7952 transitions.
Attempting over-approximation, by ignoring read arcs.
Graph (trivial) has 4032 edges and 306 vertex of which 25 / 306 are part of one of the 6 SCC in 4 ms
Free SCC test removed 19 places
Drop transitions (Empty/Sink Transition effects.) removed 2475 transitions
Ensure Unique test removed 3023 transitions
Reduce isomorphic transitions removed 5498 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 1 transitions
Trivial Post-agglo rules discarded 1 transitions
Performed 1 trivial Post agglomeration. Transition count delta: 1
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 287 transition count 2453
Reduce places removed 1 places and 0 transitions.
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Iterating post reduction 1 with 2 rules applied. Total rules applied 4 place count 286 transition count 2452
Reduce places removed 1 places and 0 transitions.
Ensure Unique test removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Iterating post reduction 2 with 2 rules applied. Total rules applied 6 place count 285 transition count 2451
Performed 3 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 3 with 3 Pre rules applied. Total rules applied 6 place count 285 transition count 2448
Deduced a syphon composed of 3 places in 1 ms
Reduce places removed 3 places and 0 transitions.
Iterating global reduction 3 with 6 rules applied. Total rules applied 12 place count 282 transition count 2448
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 3 with 4 rules applied. Total rules applied 16 place count 280 transition count 2446
Drop transitions (Redundant composition of simpler transitions.) removed 1 transitions
Redundant transition composition rules discarded 1 transitions
Iterating global reduction 3 with 1 rules applied. Total rules applied 17 place count 280 transition count 2445
Free-agglomeration rule applied 1 times.
Iterating global reduction 3 with 1 rules applied. Total rules applied 18 place count 280 transition count 2444
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 3 with 1 rules applied. Total rules applied 19 place count 279 transition count 2444
Partial Free-agglomeration rule applied 1 times.
Drop transitions (Partial Free agglomeration) removed 1 transitions
Iterating global reduction 4 with 1 rules applied. Total rules applied 20 place count 279 transition count 2444
Applied a total of 20 rules in 471 ms. Remains 279 /306 variables (removed 27) and now considering 2444/7952 (removed 5508) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 2444 rows 279 cols
[2024-05-30 17:48:12] [INFO ] Computed 1 invariants in 12 ms
[2024-05-30 17:48:12] [INFO ] [Real]Absence check using 0 positive and 1 generalized place invariants in 29 ms returned sat
[2024-05-30 17:48:12] [INFO ] After 223ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
[2024-05-30 17:48:12] [INFO ] [Nat]Absence check using 0 positive and 1 generalized place invariants in 2 ms returned sat
SMT process timed out, exceeded limit of 225
[2024-05-30 17:48:12] [INFO ] After 347ms SMT Verify possible using After timeout in natural domain returned unsat :0 sat :1
[2024-05-30 17:48:12] [INFO ] After 439ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
Over-approximation ignoring read arcs solved 0 properties in 1193 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
[2024-05-30 17:48:13] [INFO ] Flatten gal took : 229 ms
[2024-05-30 17:48:13] [INFO ] Applying decomposition
[2024-05-30 17:48:13] [INFO ] Flatten gal took : 222 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202405141337/bin/convert-linux64' '-i' '/tmp/graph169943232415278702.txt' '-o' '/tmp/graph169943232415278702.bin' '-w' '/tmp/graph169943232415278702.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202405141337/bin/louvain-linux64' '/tmp/graph169943232415278702.bin' '-l' '-1' '-v' '-w' '/tmp/graph169943232415278702.weights' '-q' '0' '-e' '0.001'
[2024-05-30 17:48:13] [INFO ] Decomposing Gal with order
[2024-05-30 17:48:13] [INFO ] Rewriting arrays to variables to allow decomposition.
[2024-05-30 17:48:14] [INFO ] Removed a total of 18743 redundant transitions.
[2024-05-30 17:48:14] [INFO ] Flatten gal took : 714 ms
[2024-05-30 17:48:15] [INFO ] Fuse similar labels procedure discarded/fused a total of 1131 labels/synchronizations in 367 ms.
[2024-05-30 17:48:15] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality15255979932989037408.gal : 37 ms
[2024-05-30 17:48:15] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality6210880590536866146.prop : 1 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202405141337/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality15255979932989037408.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality6210880590536866146.prop' '--nowitness'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202405141337/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...308
Loading property file /tmp/ReachabilityCardinality6210880590536866146.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 1
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :1 after 1
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :1 after 8
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :8 after 8
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :8 after 134
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :134 after 3596
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :3596 after 14719
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :14719 after 24978
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :24978 after 30519
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :30519 after 32283
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :32283 after 32651
SDD proceeding with computation,1 properties remain. new max is 8192
SDD size :32651 after 34211
SDD proceeding with computation,1 properties remain. new max is 16384
SDD size :34211 after 35807
SDD proceeding with computation,1 properties remain. new max is 32768
SDD size :35807 after 121834
SDD proceeding with computation,1 properties remain. new max is 65536
SDD size :121834 after 121834
BK_STOP 1717091853657
--------------------
content from stderr:
+ export BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ ReachabilityFireability = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution ReachabilityFireability -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ 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//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202405141337.jar
+ VERSION=202405141337
+ echo 'Running Version 202405141337'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination ReachabilityFireability -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
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="Szymanski-PT-b06"
export BK_EXAMINATION="ReachabilityFireability"
export BK_TOOL="itstools"
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 2-5568"
echo " Executing tool itstools"
echo " Input is Szymanski-PT-b06, examination is ReachabilityFireability"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r400-tall-171690533300879"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/Szymanski-PT-b06.tgz
mv Szymanski-PT-b06 execution
cd execution
if [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "UpperBounds" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] || [ "ReachabilityFireability" = "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 [ "ReachabilityFireability" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "ReachabilityFireability" != "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 "ReachabilityFireability.txt" ] ; then
echo "here is the order used to build the result vector(from text file)"
for x in $(grep Property ReachabilityFireability.txt | cut -d ' ' -f 2 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ -f "ReachabilityFireability.xml" ] ; then # for cunf (txt files deleted;-)
echo echo "here is the order used to build the result vector(from xml file)"
for x in $(grep '
echo "FORMULA_NAME $x"
done
elif [ "ReachabilityFireability" = "ReachabilityDeadlock" ] || [ "ReachabilityFireability" = "QuasiLiveness" ] || [ "ReachabilityFireability" = "StableMarking" ] || [ "ReachabilityFireability" = "Liveness" ] || [ "ReachabilityFireability" = "OneSafe" ] ; then
echo "FORMULA_NAME ReachabilityFireability"
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 ;