fond
Model Checking Contest 2024
14th edition, Geneva, Switzerland, June 25, 2024
Execution of r378-smll-171683810800135
Last Updated
July 7, 2024

About the Execution of ITS-Tools for SieveSingleMsgMbox-PT-d2m64

Execution Summary
Max Memory
Used (MB)
Time wait (ms) CPU Usage (ms) I/O Wait (ms) Computed Result Execution
Status
4927.932 216341.00 489677.00 577.30 TTFFFFTTTFTFTFTF normal

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.r378-smll-171683810800135.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 SieveSingleMsgMbox-PT-d2m64, examination is ReachabilityFireability
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r378-smll-171683810800135
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 1.6M
-rw-r--r-- 1 mcc users 6.9K May 14 13:22 CTLCardinality.txt
-rw-r--r-- 1 mcc users 71K May 14 13:22 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.4K May 14 13:22 CTLFireability.txt
-rw-r--r-- 1 mcc users 58K May 14 13:22 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.6K Apr 23 07:56 LTLCardinality.txt
-rw-r--r-- 1 mcc users 24K Apr 23 07:56 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.2K May 19 07:33 LTLFireability.txt
-rw-r--r-- 1 mcc users 16K May 19 19:19 LTLFireability.xml
-rw-r--r-- 1 mcc users 12K Apr 12 19:12 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 121K Apr 12 19:12 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 11K Apr 12 19:11 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 92K Apr 12 19:11 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K May 19 07:16 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K 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 6 May 18 16:43 instance
-rw-r--r-- 1 mcc users 6 May 18 16:43 iscolored
-rw-r--r-- 1 mcc users 1.1M 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 SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-00
FORMULA_NAME SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-01
FORMULA_NAME SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-02
FORMULA_NAME SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-03
FORMULA_NAME SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-04
FORMULA_NAME SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-05
FORMULA_NAME SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-06
FORMULA_NAME SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-07
FORMULA_NAME SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-08
FORMULA_NAME SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-09
FORMULA_NAME SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-10
FORMULA_NAME SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-11
FORMULA_NAME SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-12
FORMULA_NAME SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-13
FORMULA_NAME SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-14
FORMULA_NAME SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-15

=== Now, execution of the tool begins

BK_START 1716949992409

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=ReachabilityFireability
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=SieveSingleMsgMbox-PT-d2m64
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
ReachabilityFireability PT
Running Version 202405141337
[2024-05-29 02:33:14] [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]
[2024-05-29 02:33:14] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2024-05-29 02:33:15] [INFO ] Load time of PNML (sax parser for PT used): 626 ms
[2024-05-29 02:33:15] [INFO ] Transformed 2398 places.
[2024-05-29 02:33:15] [INFO ] Transformed 1954 transitions.
[2024-05-29 02:33:15] [INFO ] Parsed PT model containing 2398 places and 1954 transitions and 7816 arcs in 985 ms.
Parsed 16 properties from file /home/mcc/execution/ReachabilityFireability.xml in 40 ms.
Working with output stream class java.io.PrintStream
Deduced a syphon composed of 1984 places in 23 ms
Reduce places removed 1984 places and 0 transitions.
[2024-05-29 02:33:17] [INFO ] Flatten gal took : 597 ms
[2024-05-29 02:33:17] [INFO ] Flatten gal took : 314 ms
RANDOM walk for 40000 steps (8805 resets) in 5323 ms. (7 steps per ms) remains 16/16 properties
BEST_FIRST walk for 4001 steps (173 resets) in 276 ms. (14 steps per ms) remains 16/16 properties
BEST_FIRST walk for 4002 steps (175 resets) in 101 ms. (39 steps per ms) remains 16/16 properties
BEST_FIRST walk for 4003 steps (186 resets) in 120 ms. (33 steps per ms) remains 16/16 properties
[2024-05-29 02:33:17] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality18173147930968360526.gal : 210 ms
BEST_FIRST walk for 4003 steps (394 resets) in 125 ms. (31 steps per ms) remains 16/16 properties
[2024-05-29 02:33:17] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality6357363365335646405.prop : 4 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/ReachabilityCardinality18173147930968360526.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality6357363365335646405.prop' '--nowitness' '--gen-order' 'FOLLOW'
BEST_FIRST walk for 4003 steps (385 resets) in 120 ms. (33 steps per ms) remains 16/16 properties
BEST_FIRST walk for 4002 steps (177 resets) in 96 ms. (41 steps per ms) remains 16/16 properties

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
BEST_FIRST walk for 4002 steps (181 resets) in 121 ms. (32 steps per ms) remains 16/16 properties
BEST_FIRST walk for 4002 steps (160 resets) in 38 ms. (102 steps per ms) remains 16/16 properties
BEST_FIRST walk for 4002 steps (162 resets) in 55 ms. (71 steps per ms) remains 16/16 properties
BEST_FIRST walk for 4002 steps (206 resets) in 64 ms. (61 steps per ms) remains 16/16 properties
BEST_FIRST walk for 4003 steps (190 resets) in 67 ms. (58 steps per ms) remains 16/16 properties
BEST_FIRST walk for 4004 steps (172 resets) in 51 ms. (77 steps per ms) remains 16/16 properties
BEST_FIRST walk for 4001 steps (175 resets) in 98 ms. (40 steps per ms) remains 16/16 properties
BEST_FIRST walk for 4001 steps (171 resets) in 94 ms. (42 steps per ms) remains 16/16 properties
BEST_FIRST walk for 4003 steps (175 resets) in 59 ms. (66 steps per ms) remains 16/16 properties
BEST_FIRST walk for 4002 steps (189 resets) in 115 ms. (34 steps per ms) remains 16/16 properties
Loading property file /tmp/ReachabilityCardinality6357363365335646405.prop.
SDD proceeding with computation,16 properties remain. new max is 4
SDD size :1 after 7
SDD proceeding with computation,16 properties remain. new max is 8
SDD size :7 after 65
SDD proceeding with computation,16 properties remain. new max is 16
SDD size :65 after 346
Interrupted probabilistic random walk after 386610 steps, run timeout after 6001 ms. (steps per millisecond=64 ) properties seen :6 out of 16
Probabilistic random walk after 386610 steps, saw 178716 distinct states, run finished after 6012 ms. (steps per millisecond=64 ) properties seen :6
FORMULA SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-14 TRUE TECHNIQUES TOPOLOGICAL PROBABILISTIC_WALK
FORMULA SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-11 FALSE TECHNIQUES TOPOLOGICAL PROBABILISTIC_WALK
FORMULA SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-09 FALSE TECHNIQUES TOPOLOGICAL PROBABILISTIC_WALK
FORMULA SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-08 TRUE TECHNIQUES TOPOLOGICAL PROBABILISTIC_WALK
FORMULA SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-01 TRUE TECHNIQUES TOPOLOGICAL PROBABILISTIC_WALK
FORMULA SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-00 TRUE TECHNIQUES TOPOLOGICAL PROBABILISTIC_WALK
// Phase 1: matrix 1954 rows 414 cols
[2024-05-29 02:33:24] [INFO ] Computed 6 invariants in 68 ms
[2024-05-29 02:33:24] [INFO ] State equation strengthened by 1674 read => feed constraints.
Reachability property SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-01 is true.
SDD proceeding with computation,15 properties remain. new max is 16
SDD size :346 after 3801
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/89 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 1 (OVERLAPS) 173/262 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 10 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/262 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 10 unsolved
Problem SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-02 is UNSAT
FORMULA SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-02 FALSE TECHNIQUES SMT_REFINEMENT
Problem SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-10 is UNSAT
FORMULA SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-10 TRUE TECHNIQUES SMT_REFINEMENT
Problem SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-12 is UNSAT
FORMULA SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-12 TRUE TECHNIQUES SMT_REFINEMENT
Problem SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-13 is UNSAT
FORMULA SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-13 FALSE TECHNIQUES SMT_REFINEMENT
Problem SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-15 is UNSAT
FORMULA SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-15 FALSE TECHNIQUES SMT_REFINEMENT
At refinement iteration 3 (OVERLAPS) 152/414 variables, 3/6 constraints. Problems are: Problem set: 5 solved, 5 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/414 variables, 0/6 constraints. Problems are: Problem set: 5 solved, 5 unsolved
SDD proceeding with computation,15 properties remain. new max is 32
SDD size :3801 after 4523
At refinement iteration 5 (OVERLAPS) 1954/2368 variables, 414/420 constraints. Problems are: Problem set: 5 solved, 5 unsolved
SDD proceeding with computation,15 properties remain. new max is 64
SDD size :4523 after 5071
At refinement iteration 6 (INCLUDED_ONLY) 0/2368 variables, 1674/2094 constraints. Problems are: Problem set: 5 solved, 5 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/2368 variables, 0/2094 constraints. Problems are: Problem set: 5 solved, 5 unsolved
At refinement iteration 8 (OVERLAPS) 0/2368 variables, 0/2094 constraints. Problems are: Problem set: 5 solved, 5 unsolved
No progress, stopping.
After SMT solving in domain Real declared 2368/2368 variables, and 2094 constraints, problems are : Problem set: 5 solved, 5 unsolved in 3543 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, Generalized P Invariants (flows): 3/3 constraints, State Equation: 414/414 constraints, ReadFeed: 1674/1674 constraints, PredecessorRefiner: 10/7 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 5 solved, 5 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/32 variables, 0/0 constraints. Problems are: Problem set: 5 solved, 5 unsolved
At refinement iteration 1 (OVERLAPS) 145/177 variables, 1/1 constraints. Problems are: Problem set: 5 solved, 5 unsolved
Invariant property SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-11 does not hold.
At refinement iteration 2 (INCLUDED_ONLY) 0/177 variables, 0/1 constraints. Problems are: Problem set: 5 solved, 5 unsolved
SDD proceeding with computation,14 properties remain. new max is 64
SDD size :5071 after 11659
At refinement iteration 3 (OVERLAPS) 52/229 variables, 2/3 constraints. Problems are: Problem set: 5 solved, 5 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/229 variables, 0/3 constraints. Problems are: Problem set: 5 solved, 5 unsolved
At refinement iteration 5 (OVERLAPS) 185/414 variables, 3/6 constraints. Problems are: Problem set: 5 solved, 5 unsolved
[2024-05-29 02:33:29] [INFO ] Deduced a trap composed of 158 places in 495 ms of which 55 ms to minimize.
[2024-05-29 02:33:30] [INFO ] Deduced a trap composed of 106 places in 412 ms of which 5 ms to minimize.
[2024-05-29 02:33:30] [INFO ] Deduced a trap composed of 92 places in 421 ms of which 7 ms to minimize.
[2024-05-29 02:33:31] [INFO ] Deduced a trap composed of 44 places in 379 ms of which 4 ms to minimize.
[2024-05-29 02:33:31] [INFO ] Deduced a trap composed of 106 places in 372 ms of which 4 ms to minimize.
[2024-05-29 02:33:31] [INFO ] Deduced a trap composed of 106 places in 384 ms of which 4 ms to minimize.
[2024-05-29 02:33:32] [INFO ] Deduced a trap composed of 168 places in 292 ms of which 4 ms to minimize.
[2024-05-29 02:33:32] [INFO ] Deduced a trap composed of 224 places in 356 ms of which 4 ms to minimize.
[2024-05-29 02:33:32] [INFO ] Deduced a trap composed of 188 places in 357 ms of which 4 ms to minimize.
[2024-05-29 02:33:33] [INFO ] Deduced a trap composed of 202 places in 355 ms of which 4 ms to minimize.
[2024-05-29 02:33:33] [INFO ] Deduced a trap composed of 189 places in 348 ms of which 4 ms to minimize.
[2024-05-29 02:33:34] [INFO ] Deduced a trap composed of 175 places in 365 ms of which 4 ms to minimize.
SMT process timed out in 10008ms, After SMT, problems are : Problem set: 5 solved, 5 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 32 out of 414 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 414/414 places, 1954/1954 transitions.
Graph (complete) has 2618 edges and 414 vertex of which 388 are kept as prefixes of interest. Removing 26 places using SCC suffix rule.7 ms
Discarding 26 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 2 transitions
Ensure Unique test removed 828 transitions
Reduce isomorphic transitions removed 830 transitions.
Iterating post reduction 0 with 830 rules applied. Total rules applied 831 place count 388 transition count 1124
Discarding 95 places :
Symmetric choice reduction at 1 with 95 rule applications. Total rules 926 place count 293 transition count 714
Iterating global reduction 1 with 95 rules applied. Total rules applied 1021 place count 293 transition count 714
Ensure Unique test removed 11 transitions
Reduce isomorphic transitions removed 11 transitions.
Iterating post reduction 1 with 11 rules applied. Total rules applied 1032 place count 293 transition count 703
Discarding 62 places :
Symmetric choice reduction at 2 with 62 rule applications. Total rules 1094 place count 231 transition count 641
Iterating global reduction 2 with 62 rules applied. Total rules applied 1156 place count 231 transition count 641
Ensure Unique test removed 26 transitions
Reduce isomorphic transitions removed 26 transitions.
Iterating post reduction 2 with 26 rules applied. Total rules applied 1182 place count 231 transition count 615
Discarding 26 places :
Symmetric choice reduction at 3 with 26 rule applications. Total rules 1208 place count 205 transition count 585
Iterating global reduction 3 with 26 rules applied. Total rules applied 1234 place count 205 transition count 585
Ensure Unique test removed 90 transitions
Reduce isomorphic transitions removed 90 transitions.
Iterating post reduction 3 with 90 rules applied. Total rules applied 1324 place count 205 transition count 495
Discarding 5 places :
Symmetric choice reduction at 4 with 5 rule applications. Total rules 1329 place count 200 transition count 484
Iterating global reduction 4 with 5 rules applied. Total rules applied 1334 place count 200 transition count 484
Discarding 5 places :
Symmetric choice reduction at 4 with 5 rule applications. Total rules 1339 place count 195 transition count 479
Iterating global reduction 4 with 5 rules applied. Total rules applied 1344 place count 195 transition count 479
Discarding 3 places :
Symmetric choice reduction at 4 with 3 rule applications. Total rules 1347 place count 192 transition count 475
Iterating global reduction 4 with 3 rules applied. Total rules applied 1350 place count 192 transition count 475
Discarding 2 places :
Symmetric choice reduction at 4 with 2 rule applications. Total rules 1352 place count 190 transition count 473
Iterating global reduction 4 with 2 rules applied. Total rules applied 1354 place count 190 transition count 473
Discarding 2 places :
Symmetric choice reduction at 4 with 2 rule applications. Total rules 1356 place count 188 transition count 471
Iterating global reduction 4 with 2 rules applied. Total rules applied 1358 place count 188 transition count 471
Discarding 1 places :
Symmetric choice reduction at 4 with 1 rule applications. Total rules 1359 place count 187 transition count 470
Iterating global reduction 4 with 1 rules applied. Total rules applied 1360 place count 187 transition count 470
Applied a total of 1360 rules in 272 ms. Remains 187 /414 variables (removed 227) and now considering 470/1954 (removed 1484) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 293 ms. Remains : 187/414 places, 470/1954 transitions.
RANDOM walk for 40000 steps (9001 resets) in 465 ms. (85 steps per ms) remains 5/5 properties
BEST_FIRST walk for 40004 steps (4042 resets) in 350 ms. (113 steps per ms) remains 5/5 properties
BEST_FIRST walk for 40003 steps (4085 resets) in 269 ms. (148 steps per ms) remains 5/5 properties
BEST_FIRST walk for 40001 steps (1905 resets) in 1086 ms. (36 steps per ms) remains 5/5 properties
BEST_FIRST walk for 40002 steps (1816 resets) in 140 ms. (283 steps per ms) remains 5/5 properties
BEST_FIRST walk for 40004 steps (1889 resets) in 141 ms. (281 steps per ms) remains 5/5 properties
Interrupted probabilistic random walk after 387087 steps, run timeout after 3001 ms. (steps per millisecond=128 ) properties seen :1 out of 5
Probabilistic random walk after 387087 steps, saw 181497 distinct states, run finished after 3001 ms. (steps per millisecond=128 ) properties seen :1
FORMULA SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-05 FALSE TECHNIQUES TOPOLOGICAL PROBABILISTIC_WALK
// Phase 1: matrix 470 rows 187 cols
[2024-05-29 02:33:38] [INFO ] Computed 4 invariants in 4 ms
[2024-05-29 02:33:38] [INFO ] State equation strengthened by 326 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/22 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 1 (OVERLAPS) 77/99 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/99 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 3 (OVERLAPS) 14/113 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/113 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 5 (OVERLAPS) 12/125 variables, 2/4 constraints. Problems are: Problem set: 0 solved, 4 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/125 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 7 (OVERLAPS) 375/500 variables, 125/129 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/500 variables, 231/360 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/500 variables, 0/360 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 10 (OVERLAPS) 157/657 variables, 62/422 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/657 variables, 95/517 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/657 variables, 0/517 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 13 (OVERLAPS) 0/657 variables, 0/517 constraints. Problems are: Problem set: 0 solved, 4 unsolved
No progress, stopping.
After SMT solving in domain Real declared 657/657 variables, and 517 constraints, problems are : Problem set: 0 solved, 4 unsolved in 703 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 2/2 constraints, State Equation: 187/187 constraints, ReadFeed: 326/326 constraints, PredecessorRefiner: 4/4 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 4 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/22 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 1 (OVERLAPS) 77/99 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/99 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 3 (OVERLAPS) 14/113 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/113 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 5 (OVERLAPS) 12/125 variables, 2/4 constraints. Problems are: Problem set: 0 solved, 4 unsolved
[2024-05-29 02:33:39] [INFO ] Deduced a trap composed of 31 places in 63 ms of which 2 ms to minimize.
[2024-05-29 02:33:39] [INFO ] Deduced a trap composed of 53 places in 62 ms of which 2 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/125 variables, 2/6 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/125 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 4 unsolved
At refinement iteration 8 (OVERLAPS) 375/500 variables, 125/131 constraints. Problems are: Problem set: 0 solved, 4 unsolved
Reachability property SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-06 is true.
FORMULA SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-06 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
Invariant property SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-04 does not hold.
FORMULA SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-04 FALSE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING
SDD proceeding with computation,12 properties remain. new max is 64
SDD size :11659 after 47843
At refinement iteration 9 (INCLUDED_ONLY) 0/500 variables, 231/362 constraints. Problems are: Problem set: 2 solved, 2 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/500 variables, 0/362 constraints. Problems are: Problem set: 2 solved, 2 unsolved
At refinement iteration 11 (OVERLAPS) 157/657 variables, 62/424 constraints. Problems are: Problem set: 2 solved, 2 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/657 variables, 95/519 constraints. Problems are: Problem set: 2 solved, 2 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/657 variables, 2/521 constraints. Problems are: Problem set: 2 solved, 2 unsolved
SDD proceeding with computation,12 properties remain. new max is 128
SDD size :47843 after 81019
At refinement iteration 14 (INCLUDED_ONLY) 0/657 variables, 0/521 constraints. Problems are: Problem set: 2 solved, 2 unsolved
At refinement iteration 15 (OVERLAPS) 0/657 variables, 0/521 constraints. Problems are: Problem set: 2 solved, 2 unsolved
No progress, stopping.
After SMT solving in domain Int declared 657/657 variables, and 521 constraints, problems are : Problem set: 2 solved, 2 unsolved in 2224 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 2/2 constraints, State Equation: 187/187 constraints, ReadFeed: 326/326 constraints, PredecessorRefiner: 2/4 constraints, Known Traps: 2/2 constraints]
After SMT, in 3002ms problems are : Problem set: 2 solved, 2 unsolved
Parikh walk visited 0 properties in 1269 ms.
Support contains 20 out of 187 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 187/187 places, 470/470 transitions.
Discarding 9 places :
Symmetric choice reduction at 0 with 9 rule applications. Total rules 9 place count 178 transition count 385
Iterating global reduction 0 with 9 rules applied. Total rules applied 18 place count 178 transition count 385
Discarding 9 places :
Symmetric choice reduction at 0 with 9 rule applications. Total rules 27 place count 169 transition count 376
Iterating global reduction 0 with 9 rules applied. Total rules applied 36 place count 169 transition count 376
Ensure Unique test removed 5 transitions
Reduce isomorphic transitions removed 5 transitions.
Iterating post reduction 0 with 5 rules applied. Total rules applied 41 place count 169 transition count 371
Discarding 4 places :
Symmetric choice reduction at 1 with 4 rule applications. Total rules 45 place count 165 transition count 365
Iterating global reduction 1 with 4 rules applied. Total rules applied 49 place count 165 transition count 365
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 1 with 2 rules applied. Total rules applied 51 place count 165 transition count 363
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 52 place count 164 transition count 362
Iterating global reduction 2 with 1 rules applied. Total rules applied 53 place count 164 transition count 362
Discarding 1 places :
Symmetric choice reduction at 2 with 1 rule applications. Total rules 54 place count 163 transition count 361
Iterating global reduction 2 with 1 rules applied. Total rules applied 55 place count 163 transition count 361
Applied a total of 55 rules in 51 ms. Remains 163 /187 variables (removed 24) and now considering 361/470 (removed 109) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 52 ms. Remains : 163/187 places, 361/470 transitions.
RANDOM walk for 40000 steps (8970 resets) in 324 ms. (123 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40002 steps (4148 resets) in 225 ms. (177 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40004 steps (1883 resets) in 168 ms. (236 steps per ms) remains 2/2 properties
Interrupted probabilistic random walk after 519998 steps, run timeout after 3001 ms. (steps per millisecond=173 ) properties seen :0 out of 2
Probabilistic random walk after 519998 steps, saw 239976 distinct states, run finished after 3001 ms. (steps per millisecond=173 ) properties seen :0
// Phase 1: matrix 361 rows 163 cols
[2024-05-29 02:33:45] [INFO ] Computed 4 invariants in 2 ms
[2024-05-29 02:33:45] [INFO ] State equation strengthened by 238 read => feed constraints.
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/20 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 1 (OVERLAPS) 69/89 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/89 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 3 (OVERLAPS) 14/103 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/103 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 5 (OVERLAPS) 10/113 variables, 2/4 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/113 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 7 (OVERLAPS) 344/457 variables, 113/117 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/457 variables, 221/338 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/457 variables, 0/338 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 10 (OVERLAPS) 67/524 variables, 50/388 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/524 variables, 17/405 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/524 variables, 0/405 constraints. Problems are: Problem set: 0 solved, 2 unsolved
SDD proceeding with computation,12 properties remain. new max is 256
SDD size :81019 after 96801
At refinement iteration 13 (OVERLAPS) 0/524 variables, 0/405 constraints. Problems are: Problem set: 0 solved, 2 unsolved
No progress, stopping.
After SMT solving in domain Real declared 524/524 variables, and 405 constraints, problems are : Problem set: 0 solved, 2 unsolved in 590 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 2/2 constraints, State Equation: 163/163 constraints, ReadFeed: 238/238 constraints, PredecessorRefiner: 2/2 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 2 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/20 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 1 (OVERLAPS) 69/89 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/89 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 3 (OVERLAPS) 14/103 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/103 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 5 (OVERLAPS) 10/113 variables, 2/4 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/113 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 7 (OVERLAPS) 344/457 variables, 113/117 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/457 variables, 221/338 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/457 variables, 0/338 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 10 (OVERLAPS) 67/524 variables, 50/388 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/524 variables, 17/405 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/524 variables, 2/407 constraints. Problems are: Problem set: 0 solved, 2 unsolved
[2024-05-29 02:33:47] [INFO ] Deduced a trap composed of 22 places in 65 ms of which 1 ms to minimize.
[2024-05-29 02:33:47] [INFO ] Deduced a trap composed of 51 places in 47 ms of which 2 ms to minimize.
At refinement iteration 13 (INCLUDED_ONLY) 0/524 variables, 2/409 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/524 variables, 0/409 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 15 (OVERLAPS) 0/524 variables, 0/409 constraints. Problems are: Problem set: 0 solved, 2 unsolved
No progress, stopping.
After SMT solving in domain Int declared 524/524 variables, and 409 constraints, problems are : Problem set: 0 solved, 2 unsolved in 2000 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 2/2 constraints, State Equation: 163/163 constraints, ReadFeed: 238/238 constraints, PredecessorRefiner: 2/2 constraints, Known Traps: 2/2 constraints]
After SMT, in 2624ms problems are : Problem set: 0 solved, 2 unsolved
Parikh walk visited 0 properties in 1094 ms.
Support contains 20 out of 163 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 163/163 places, 361/361 transitions.
Applied a total of 0 rules in 15 ms. Remains 163 /163 variables (removed 0) and now considering 361/361 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 15 ms. Remains : 163/163 places, 361/361 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 163/163 places, 361/361 transitions.
Applied a total of 0 rules in 15 ms. Remains 163 /163 variables (removed 0) and now considering 361/361 (removed 0) transitions.
[2024-05-29 02:33:49] [INFO ] Invariant cache hit.
[2024-05-29 02:33:49] [INFO ] Implicit Places using invariants in 183 ms returned []
[2024-05-29 02:33:49] [INFO ] Invariant cache hit.
[2024-05-29 02:33:49] [INFO ] State equation strengthened by 238 read => feed constraints.
[2024-05-29 02:33:50] [INFO ] Implicit Places using invariants and state equation in 921 ms returned []
Implicit Place search using SMT with State Equation took 1123 ms to find 0 implicit places.
[2024-05-29 02:33:50] [INFO ] Redundant transitions in 25 ms returned []
Running 360 sub problems to find dead transitions.
[2024-05-29 02:33:50] [INFO ] Invariant cache hit.
[2024-05-29 02:33:50] [INFO ] State equation strengthened by 238 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/162 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 360 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/162 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 360 unsolved
SDD proceeding with computation,12 properties remain. new max is 512
SDD size :96801 after 112167
At refinement iteration 2 (INCLUDED_ONLY) 0/162 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 360 unsolved
At refinement iteration 3 (OVERLAPS) 1/163 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 360 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/163 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 360 unsolved
At refinement iteration 5 (OVERLAPS) 361/524 variables, 163/167 constraints. Problems are: Problem set: 0 solved, 360 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/524 variables, 238/405 constraints. Problems are: Problem set: 0 solved, 360 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/524 variables, 0/405 constraints. Problems are: Problem set: 0 solved, 360 unsolved
At refinement iteration 8 (OVERLAPS) 0/524 variables, 0/405 constraints. Problems are: Problem set: 0 solved, 360 unsolved
No progress, stopping.
After SMT solving in domain Real declared 524/524 variables, and 405 constraints, problems are : Problem set: 0 solved, 360 unsolved in 24930 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 2/2 constraints, State Equation: 163/163 constraints, ReadFeed: 238/238 constraints, PredecessorRefiner: 360/360 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 360 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/162 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 360 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/162 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 360 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/162 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 360 unsolved
At refinement iteration 3 (OVERLAPS) 1/163 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 360 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/163 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 360 unsolved
At refinement iteration 5 (OVERLAPS) 361/524 variables, 163/167 constraints. Problems are: Problem set: 0 solved, 360 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/524 variables, 238/405 constraints. Problems are: Problem set: 0 solved, 360 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/524 variables, 360/765 constraints. Problems are: Problem set: 0 solved, 360 unsolved
[2024-05-29 02:34:30] [INFO ] Deduced a trap composed of 22 places in 57 ms of which 2 ms to minimize.
[2024-05-29 02:34:30] [INFO ] Deduced a trap composed of 51 places in 36 ms of which 1 ms to minimize.
[2024-05-29 02:34:31] [INFO ] Deduced a trap composed of 58 places in 69 ms of which 2 ms to minimize.
Problem TDEAD61 is UNSAT
Problem TDEAD65 is UNSAT
Problem TDEAD335 is UNSAT
At refinement iteration 8 (INCLUDED_ONLY) 0/524 variables, 3/768 constraints. Problems are: Problem set: 3 solved, 357 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 524/524 variables, and 768 constraints, problems are : Problem set: 3 solved, 357 unsolved in 30047 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 2/2 constraints, State Equation: 163/163 constraints, ReadFeed: 238/238 constraints, PredecessorRefiner: 360/360 constraints, Known Traps: 3/3 constraints]
After SMT, in 56010ms problems are : Problem set: 3 solved, 357 unsolved
Search for dead transitions found 3 dead transitions in 56019ms
Found 3 dead transitions using SMT.
Drop transitions (Dead Transitions using SMT only with invariants) removed 3 transitions
Dead transitions reduction (with SMT) removed 3 transitions
Starting structural reductions in REACHABILITY mode, iteration 1 : 163/163 places, 358/361 transitions.
Graph (complete) has 615 edges and 163 vertex of which 160 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.0 ms
Discarding 3 places :
Also discarding 0 output transitions
Applied a total of 1 rules in 24 ms. Remains 160 /163 variables (removed 3) and now considering 358/358 (removed 0) transitions.
// Phase 1: matrix 358 rows 160 cols
[2024-05-29 02:34:46] [INFO ] Computed 3 invariants in 2 ms
[2024-05-29 02:34:46] [INFO ] Implicit Places using invariants in 132 ms returned []
[2024-05-29 02:34:46] [INFO ] Invariant cache hit.
[2024-05-29 02:34:47] [INFO ] State equation strengthened by 237 read => feed constraints.
[2024-05-29 02:34:47] [INFO ] Implicit Places using invariants and state equation in 960 ms returned []
Implicit Place search using SMT with State Equation took 1098 ms to find 0 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 2 : 160/163 places, 358/361 transitions.
Finished structural reductions in REACHABILITY mode , in 2 iterations and 58315 ms. Remains : 160/163 places, 358/361 transitions.
RANDOM walk for 40000 steps (8943 resets) in 258 ms. (154 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40002 steps (4052 resets) in 203 ms. (196 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40003 steps (1839 resets) in 80 ms. (493 steps per ms) remains 2/2 properties
Interrupted probabilistic random walk after 467216 steps, run timeout after 3001 ms. (steps per millisecond=155 ) properties seen :0 out of 2
Probabilistic random walk after 467216 steps, saw 216755 distinct states, run finished after 3001 ms. (steps per millisecond=155 ) properties seen :0
[2024-05-29 02:34:51] [INFO ] Invariant cache hit.
[2024-05-29 02:34:51] [INFO ] State equation strengthened by 237 read => feed constraints.
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/20 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 1 (OVERLAPS) 76/96 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/96 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 3 (OVERLAPS) 4/100 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/100 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 5 (OVERLAPS) 338/438 variables, 100/103 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/438 variables, 217/320 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/438 variables, 0/320 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 8 (OVERLAPS) 80/518 variables, 60/380 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/518 variables, 20/400 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/518 variables, 0/400 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 11 (OVERLAPS) 0/518 variables, 0/400 constraints. Problems are: Problem set: 0 solved, 2 unsolved
No progress, stopping.
After SMT solving in domain Real declared 518/518 variables, and 400 constraints, problems are : Problem set: 0 solved, 2 unsolved in 434 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 160/160 constraints, ReadFeed: 237/237 constraints, PredecessorRefiner: 2/2 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 2 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/20 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 1 (OVERLAPS) 76/96 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/96 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 3 (OVERLAPS) 4/100 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/100 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 5 (OVERLAPS) 338/438 variables, 100/103 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/438 variables, 217/320 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/438 variables, 0/320 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 8 (OVERLAPS) 80/518 variables, 60/380 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/518 variables, 20/400 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/518 variables, 2/402 constraints. Problems are: Problem set: 0 solved, 2 unsolved
[2024-05-29 02:34:52] [INFO ] Deduced a trap composed of 22 places in 48 ms of which 2 ms to minimize.
[2024-05-29 02:34:52] [INFO ] Deduced a trap composed of 51 places in 36 ms of which 1 ms to minimize.
At refinement iteration 11 (INCLUDED_ONLY) 0/518 variables, 2/404 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/518 variables, 0/404 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 13 (OVERLAPS) 0/518 variables, 0/404 constraints. Problems are: Problem set: 0 solved, 2 unsolved
No progress, stopping.
After SMT solving in domain Int declared 518/518 variables, and 404 constraints, problems are : Problem set: 0 solved, 2 unsolved in 1960 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 160/160 constraints, ReadFeed: 237/237 constraints, PredecessorRefiner: 2/2 constraints, Known Traps: 2/2 constraints]
After SMT, in 2437ms problems are : Problem set: 0 solved, 2 unsolved
Parikh walk visited 0 properties in 1900 ms.
Support contains 20 out of 160 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 160/160 places, 358/358 transitions.
Applied a total of 0 rules in 15 ms. Remains 160 /160 variables (removed 0) and now considering 358/358 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 16 ms. Remains : 160/160 places, 358/358 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 160/160 places, 358/358 transitions.
Applied a total of 0 rules in 14 ms. Remains 160 /160 variables (removed 0) and now considering 358/358 (removed 0) transitions.
[2024-05-29 02:34:55] [INFO ] Invariant cache hit.
[2024-05-29 02:34:55] [INFO ] Implicit Places using invariants in 143 ms returned []
[2024-05-29 02:34:55] [INFO ] Invariant cache hit.
[2024-05-29 02:34:55] [INFO ] State equation strengthened by 237 read => feed constraints.
[2024-05-29 02:34:56] [INFO ] Implicit Places using invariants and state equation in 846 ms returned []
Implicit Place search using SMT with State Equation took 993 ms to find 0 implicit places.
[2024-05-29 02:34:56] [INFO ] Redundant transitions in 6 ms returned []
Running 357 sub problems to find dead transitions.
[2024-05-29 02:34:56] [INFO ] Invariant cache hit.
[2024-05-29 02:34:56] [INFO ] State equation strengthened by 237 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/159 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 357 unsolved
Reachability property SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-14 is true.
SDD proceeding with computation,11 properties remain. new max is 512
SDD size :112167 after 2.45054e+06
At refinement iteration 1 (INCLUDED_ONLY) 0/159 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 357 unsolved
At refinement iteration 2 (OVERLAPS) 1/160 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 357 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/160 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 357 unsolved
Problem TDEAD58 is UNSAT
Problem TDEAD61 is UNSAT
Problem TDEAD330 is UNSAT
At refinement iteration 4 (OVERLAPS) 358/518 variables, 160/163 constraints. Problems are: Problem set: 3 solved, 354 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/518 variables, 237/400 constraints. Problems are: Problem set: 3 solved, 354 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/518 variables, 0/400 constraints. Problems are: Problem set: 3 solved, 354 unsolved
At refinement iteration 7 (OVERLAPS) 0/518 variables, 0/400 constraints. Problems are: Problem set: 3 solved, 354 unsolved
No progress, stopping.
After SMT solving in domain Real declared 518/518 variables, and 400 constraints, problems are : Problem set: 3 solved, 354 unsolved in 23071 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 160/160 constraints, ReadFeed: 237/237 constraints, PredecessorRefiner: 357/357 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 3 solved, 354 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/156 variables, 1/1 constraints. Problems are: Problem set: 3 solved, 354 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/156 variables, 0/1 constraints. Problems are: Problem set: 3 solved, 354 unsolved
At refinement iteration 2 (OVERLAPS) 1/157 variables, 2/3 constraints. Problems are: Problem set: 3 solved, 354 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/157 variables, 0/3 constraints. Problems are: Problem set: 3 solved, 354 unsolved
At refinement iteration 4 (OVERLAPS) 357/514 variables, 157/160 constraints. Problems are: Problem set: 3 solved, 354 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/514 variables, 236/396 constraints. Problems are: Problem set: 3 solved, 354 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/514 variables, 27/423 constraints. Problems are: Problem set: 3 solved, 354 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/514 variables, 0/423 constraints. Problems are: Problem set: 3 solved, 354 unsolved
At refinement iteration 8 (OVERLAPS) 4/518 variables, 3/426 constraints. Problems are: Problem set: 3 solved, 354 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/518 variables, 1/427 constraints. Problems are: Problem set: 3 solved, 354 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 518/518 variables, and 754 constraints, problems are : Problem set: 3 solved, 354 unsolved in 30187 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 160/160 constraints, ReadFeed: 237/237 constraints, PredecessorRefiner: 354/357 constraints, Known Traps: 0/0 constraints]
After SMT, in 54328ms problems are : Problem set: 3 solved, 354 unsolved
Search for dead transitions found 3 dead transitions in 54333ms
Found 3 dead transitions using SMT.
Drop transitions (Dead Transitions using SMT only with invariants) removed 3 transitions
Dead transitions reduction (with SMT) removed 3 transitions
Starting structural reductions in REACHABILITY mode, iteration 1 : 160/160 places, 355/358 transitions.
Graph (complete) has 606 edges and 160 vertex of which 157 are kept as prefixes of interest. Removing 3 places using SCC suffix rule.1 ms
Discarding 3 places :
Also discarding 0 output transitions
Applied a total of 1 rules in 16 ms. Remains 157 /160 variables (removed 3) and now considering 355/355 (removed 0) transitions.
// Phase 1: matrix 355 rows 157 cols
[2024-05-29 02:35:50] [INFO ] Computed 3 invariants in 2 ms
[2024-05-29 02:35:50] [INFO ] Implicit Places using invariants in 125 ms returned []
[2024-05-29 02:35:50] [INFO ] Invariant cache hit.
[2024-05-29 02:35:51] [INFO ] State equation strengthened by 236 read => feed constraints.
[2024-05-29 02:35:51] [INFO ] Implicit Places using invariants and state equation in 831 ms returned []
Implicit Place search using SMT with State Equation took 963 ms to find 0 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 2 : 157/160 places, 355/358 transitions.
Finished structural reductions in REACHABILITY mode , in 2 iterations and 56333 ms. Remains : 157/160 places, 355/358 transitions.
RANDOM walk for 40000 steps (9051 resets) in 261 ms. (152 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40002 steps (4153 resets) in 166 ms. (239 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40002 steps (1837 resets) in 90 ms. (439 steps per ms) remains 2/2 properties
Interrupted probabilistic random walk after 476929 steps, run timeout after 3001 ms. (steps per millisecond=158 ) properties seen :0 out of 2
Probabilistic random walk after 476929 steps, saw 220785 distinct states, run finished after 3001 ms. (steps per millisecond=158 ) properties seen :0
[2024-05-29 02:35:54] [INFO ] Invariant cache hit.
[2024-05-29 02:35:54] [INFO ] State equation strengthened by 236 read => feed constraints.
All remaining problems are real, not stopping.
At refinement iteration 0 (INCLUDED_ONLY) 0/20 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 1 (OVERLAPS) 76/96 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/96 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 3 (OVERLAPS) 4/100 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/100 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 5 (OVERLAPS) 336/436 variables, 100/103 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/436 variables, 217/320 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/436 variables, 0/320 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 8 (OVERLAPS) 76/512 variables, 57/377 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/512 variables, 19/396 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/512 variables, 0/396 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 11 (OVERLAPS) 0/512 variables, 0/396 constraints. Problems are: Problem set: 0 solved, 2 unsolved
No progress, stopping.
After SMT solving in domain Real declared 512/512 variables, and 396 constraints, problems are : Problem set: 0 solved, 2 unsolved in 518 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 157/157 constraints, ReadFeed: 236/236 constraints, PredecessorRefiner: 2/2 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 2 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/20 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 1 (OVERLAPS) 76/96 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/96 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 3 (OVERLAPS) 4/100 variables, 1/3 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/100 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 5 (OVERLAPS) 336/436 variables, 100/103 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/436 variables, 217/320 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/436 variables, 0/320 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 8 (OVERLAPS) 76/512 variables, 57/377 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/512 variables, 19/396 constraints. Problems are: Problem set: 0 solved, 2 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/512 variables, 2/398 constraints. Problems are: Problem set: 0 solved, 2 unsolved
[2024-05-29 02:35:56] [INFO ] Deduced a trap composed of 41 places in 37 ms of which 1 ms to minimize.
Problem SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-03 is UNSAT
FORMULA SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-03 FALSE TECHNIQUES SMT_REFINEMENT
At refinement iteration 11 (INCLUDED_ONLY) 0/512 variables, 1/399 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/512 variables, 0/399 constraints. Problems are: Problem set: 1 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 0/512 variables, 0/399 constraints. Problems are: Problem set: 1 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 512/512 variables, and 399 constraints, problems are : Problem set: 1 solved, 1 unsolved in 936 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 157/157 constraints, ReadFeed: 236/236 constraints, PredecessorRefiner: 2/2 constraints, Known Traps: 1/1 constraints]
After SMT, in 1475ms problems are : Problem set: 1 solved, 1 unsolved
Parikh walk visited 0 properties in 1215 ms.
Support contains 2 out of 157 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 157/157 places, 355/355 transitions.
Discarding 17 places :
Symmetric choice reduction at 0 with 17 rule applications. Total rules 17 place count 140 transition count 194
Iterating global reduction 0 with 17 rules applied. Total rules applied 34 place count 140 transition count 194
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 36 place count 140 transition count 192
Discarding 17 places :
Symmetric choice reduction at 1 with 17 rule applications. Total rules 53 place count 123 transition count 173
Iterating global reduction 1 with 17 rules applied. Total rules applied 70 place count 123 transition count 173
Ensure Unique test removed 8 transitions
Reduce isomorphic transitions removed 8 transitions.
Iterating post reduction 1 with 8 rules applied. Total rules applied 78 place count 123 transition count 165
Discarding 11 places :
Symmetric choice reduction at 2 with 11 rule applications. Total rules 89 place count 112 transition count 146
Iterating global reduction 2 with 11 rules applied. Total rules applied 100 place count 112 transition count 146
Ensure Unique test removed 7 transitions
Reduce isomorphic transitions removed 7 transitions.
Iterating post reduction 2 with 7 rules applied. Total rules applied 107 place count 112 transition count 139
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 110 place count 109 transition count 135
Iterating global reduction 3 with 3 rules applied. Total rules applied 113 place count 109 transition count 135
Discarding 3 places :
Symmetric choice reduction at 3 with 3 rule applications. Total rules 116 place count 106 transition count 132
Iterating global reduction 3 with 3 rules applied. Total rules applied 119 place count 106 transition count 132
Discarding 2 places :
Symmetric choice reduction at 3 with 2 rule applications. Total rules 121 place count 104 transition count 130
Iterating global reduction 3 with 2 rules applied. Total rules applied 123 place count 104 transition count 130
Ensure Unique test removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 3 with 2 rules applied. Total rules applied 125 place count 104 transition count 128
Discarding 2 places :
Symmetric choice reduction at 4 with 2 rule applications. Total rules 127 place count 102 transition count 126
Iterating global reduction 4 with 2 rules applied. Total rules applied 129 place count 102 transition count 126
Discarding 1 places :
Symmetric choice reduction at 4 with 1 rule applications. Total rules 130 place count 101 transition count 125
Iterating global reduction 4 with 1 rules applied. Total rules applied 131 place count 101 transition count 125
Discarding 1 places :
Symmetric choice reduction at 4 with 1 rule applications. Total rules 132 place count 100 transition count 122
Iterating global reduction 4 with 1 rules applied. Total rules applied 133 place count 100 transition count 122
Discarding 1 places :
Symmetric choice reduction at 4 with 1 rule applications. Total rules 134 place count 99 transition count 121
Iterating global reduction 4 with 1 rules applied. Total rules applied 135 place count 99 transition count 121
Discarding 1 places :
Symmetric choice reduction at 4 with 1 rule applications. Total rules 136 place count 98 transition count 120
Iterating global reduction 4 with 1 rules applied. Total rules applied 137 place count 98 transition count 120
Applied a total of 137 rules in 37 ms. Remains 98 /157 variables (removed 59) and now considering 120/355 (removed 235) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 37 ms. Remains : 98/157 places, 120/355 transitions.
RANDOM walk for 40000 steps (8859 resets) in 81 ms. (487 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40003 steps (1919 resets) in 33 ms. (1176 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 2366128 steps, run timeout after 3001 ms. (steps per millisecond=788 ) properties seen :0 out of 1
Probabilistic random walk after 2366128 steps, saw 1056439 distinct states, run finished after 3001 ms. (steps per millisecond=788 ) properties seen :0
// Phase 1: matrix 120 rows 98 cols
[2024-05-29 02:36:00] [INFO ] Computed 3 invariants in 6 ms
[2024-05-29 02:36:00] [INFO ] State equation strengthened by 53 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 79/81 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/81 variables, 12/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/81 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 131/212 variables, 90/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/212 variables, 1/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/212 variables, 41/146 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/212 variables, 0/146 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 6/218 variables, 2/148 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/218 variables, 6/154 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/218 variables, 0/154 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 0/218 variables, 0/154 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 218/218 variables, and 154 constraints, problems are : Problem set: 0 solved, 1 unsolved in 119 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 98/98 constraints, ReadFeed: 53/53 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 79/81 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/81 variables, 12/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/81 variables, 0/14 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 131/212 variables, 90/104 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/212 variables, 1/105 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/212 variables, 41/146 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/212 variables, 1/147 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/212 variables, 0/147 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 6/218 variables, 2/149 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/218 variables, 6/155 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/218 variables, 0/155 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 0/218 variables, 0/155 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 218/218 variables, and 155 constraints, problems are : Problem set: 0 solved, 1 unsolved in 174 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 98/98 constraints, ReadFeed: 53/53 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints]
After SMT, in 305ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 470 ms.
Support contains 2 out of 98 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 98/98 places, 120/120 transitions.
Applied a total of 0 rules in 4 ms. Remains 98 /98 variables (removed 0) and now considering 120/120 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 98/98 places, 120/120 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 98/98 places, 120/120 transitions.
Applied a total of 0 rules in 4 ms. Remains 98 /98 variables (removed 0) and now considering 120/120 (removed 0) transitions.
[2024-05-29 02:36:01] [INFO ] Invariant cache hit.
[2024-05-29 02:36:01] [INFO ] Implicit Places using invariants in 86 ms returned []
[2024-05-29 02:36:01] [INFO ] Invariant cache hit.
[2024-05-29 02:36:01] [INFO ] State equation strengthened by 53 read => feed constraints.
[2024-05-29 02:36:01] [INFO ] Implicit Places using invariants and state equation in 247 ms returned []
Implicit Place search using SMT with State Equation took 338 ms to find 0 implicit places.
[2024-05-29 02:36:01] [INFO ] Redundant transitions in 1 ms returned []
Running 119 sub problems to find dead transitions.
[2024-05-29 02:36:01] [INFO ] Invariant cache hit.
[2024-05-29 02:36:01] [INFO ] State equation strengthened by 53 read => feed constraints.
At refinement iteration 0 (INCLUDED_ONLY) 0/97 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 119 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/97 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 119 unsolved
At refinement iteration 2 (OVERLAPS) 1/98 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 119 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/98 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 119 unsolved
At refinement iteration 4 (OVERLAPS) 120/218 variables, 98/101 constraints. Problems are: Problem set: 0 solved, 119 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/218 variables, 53/154 constraints. Problems are: Problem set: 0 solved, 119 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/218 variables, 0/154 constraints. Problems are: Problem set: 0 solved, 119 unsolved
At refinement iteration 7 (OVERLAPS) 0/218 variables, 0/154 constraints. Problems are: Problem set: 0 solved, 119 unsolved
No progress, stopping.
After SMT solving in domain Real declared 218/218 variables, and 154 constraints, problems are : Problem set: 0 solved, 119 unsolved in 3770 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 98/98 constraints, ReadFeed: 53/53 constraints, PredecessorRefiner: 119/119 constraints, Known Traps: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 119 unsolved
At refinement iteration 0 (INCLUDED_ONLY) 0/97 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 119 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/97 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 119 unsolved
At refinement iteration 2 (OVERLAPS) 1/98 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 119 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/98 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 119 unsolved
At refinement iteration 4 (OVERLAPS) 120/218 variables, 98/101 constraints. Problems are: Problem set: 0 solved, 119 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/218 variables, 53/154 constraints. Problems are: Problem set: 0 solved, 119 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/218 variables, 119/273 constraints. Problems are: Problem set: 0 solved, 119 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/218 variables, 0/273 constraints. Problems are: Problem set: 0 solved, 119 unsolved
At refinement iteration 8 (OVERLAPS) 0/218 variables, 0/273 constraints. Problems are: Problem set: 0 solved, 119 unsolved
No progress, stopping.
After SMT solving in domain Int declared 218/218 variables, and 273 constraints, problems are : Problem set: 0 solved, 119 unsolved in 7340 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 98/98 constraints, ReadFeed: 53/53 constraints, PredecessorRefiner: 119/119 constraints, Known Traps: 0/0 constraints]
After SMT, in 11240ms problems are : Problem set: 0 solved, 119 unsolved
Search for dead transitions found 0 dead transitions in 11241ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 11589 ms. Remains : 98/98 places, 120/120 transitions.
Attempting over-approximation, by ignoring read arcs.
Drop transitions (Empty/Sink Transition effects.) removed 1 transitions
Reduce isomorphic transitions removed 1 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 6 transitions
Trivial Post-agglo rules discarded 6 transitions
Performed 6 trivial Post agglomeration. Transition count delta: 6
Iterating post reduction 0 with 7 rules applied. Total rules applied 7 place count 98 transition count 113
Reduce places removed 6 places and 0 transitions.
Iterating post reduction 1 with 6 rules applied. Total rules applied 13 place count 92 transition count 113
Performed 15 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 15 Pre rules applied. Total rules applied 13 place count 92 transition count 98
Deduced a syphon composed of 15 places in 8 ms
Reduce places removed 15 places and 0 transitions.
Iterating global reduction 2 with 30 rules applied. Total rules applied 43 place count 77 transition count 98
Performed 6 Post agglomeration using F-continuation condition.Transition count delta: 6
Deduced a syphon composed of 6 places in 1 ms
Reduce places removed 6 places and 0 transitions.
Iterating global reduction 2 with 12 rules applied. Total rules applied 55 place count 71 transition count 92
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: -9
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 2 with 2 rules applied. Total rules applied 57 place count 70 transition count 101
Applied a total of 57 rules in 47 ms. Remains 70 /98 variables (removed 28) and now considering 101/120 (removed 19) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 101 rows 70 cols
[2024-05-29 02:36:13] [INFO ] Computed 3 invariants in 1 ms
[2024-05-29 02:36:13] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2024-05-29 02:36:13] [INFO ] After 91ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
[2024-05-29 02:36:13] [INFO ] [Nat]Absence check using 3 positive place invariants in 1 ms returned sat
[2024-05-29 02:36:13] [INFO ] After 47ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2024-05-29 02:36:13] [INFO ] After 66ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2024-05-29 02:36:13] [INFO ] After 129ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2024-05-29 02:36:13] [INFO ] Flatten gal took : 10 ms
[2024-05-29 02:36:13] [INFO ] Flatten gal took : 10 ms
[2024-05-29 02:36:13] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality6370622722613522020.gal : 3 ms
[2024-05-29 02:36:13] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality14995351689794477152.prop : 0 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/ReachabilityCardinality6370622722613522020.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality14995351689794477152.prop' '--nowitness' '--gen-order' 'FOLLOW'

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/ReachabilityCardinality14995351689794477152.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 9
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :9 after 28
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :28 after 37
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :37 after 118
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :118 after 198
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :198 after 354
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :354 after 1654
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1654 after 13868
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :13868 after 254426
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :254426 after 9.19385e+06
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :9.19385e+06 after 3.72817e+08
SDD proceeding with computation,1 properties remain. new max is 8192
SDD size :3.72817e+08 after 1.41184e+10
Detected timeout of ITS tools.
[2024-05-29 02:36:28] [INFO ] Flatten gal took : 9 ms
[2024-05-29 02:36:28] [INFO ] Applying decomposition
[2024-05-29 02:36:28] [INFO ] Flatten gal took : 6 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/graph9434617725758524322.txt' '-o' '/tmp/graph9434617725758524322.bin' '-w' '/tmp/graph9434617725758524322.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202405141337/bin/louvain-linux64' '/tmp/graph9434617725758524322.bin' '-l' '-1' '-v' '-w' '/tmp/graph9434617725758524322.weights' '-q' '0' '-e' '0.001'
[2024-05-29 02:36:28] [INFO ] Decomposing Gal with order
[2024-05-29 02:36:28] [INFO ] Rewriting arrays to variables to allow decomposition.
[2024-05-29 02:36:28] [INFO ] Removed a total of 82 redundant transitions.
[2024-05-29 02:36:28] [INFO ] Flatten gal took : 70 ms
[2024-05-29 02:36:28] [INFO ] Fuse similar labels procedure discarded/fused a total of 41 labels/synchronizations in 14 ms.
[2024-05-29 02:36:28] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality6979224130116722707.gal : 4 ms
[2024-05-29 02:36:28] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality6331652274397622838.prop : 0 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/ReachabilityCardinality6979224130116722707.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality6331652274397622838.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 ...307
Loading property file /tmp/ReachabilityCardinality6331652274397622838.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 8
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :8 after 80
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :80 after 84
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :1254 after 1332
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :2531 after 3357
SDD proceeding with computation,11 properties remain. new max is 1024
SDD size :2.45054e+06 after 2.12568e+07
Reachability property SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-07 is true.
Found states matching all0 target predicate
Will report total states built up to this point. Computation was interrupted after 65 fixpoint passes
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30717 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
[2024-05-29 02:36:44] [INFO ] Flatten gal took : 93 ms
[2024-05-29 02:36:44] [INFO ] Applying decomposition
[2024-05-29 02:36:44] [INFO ] Flatten gal took : 85 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/graph14960001548598086091.txt' '-o' '/tmp/graph14960001548598086091.bin' '-w' '/tmp/graph14960001548598086091.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202405141337/bin/louvain-linux64' '/tmp/graph14960001548598086091.bin' '-l' '-1' '-v' '-w' '/tmp/graph14960001548598086091.weights' '-q' '0' '-e' '0.001'
[2024-05-29 02:36:44] [INFO ] Decomposing Gal with order
[2024-05-29 02:36:44] [INFO ] Rewriting arrays to variables to allow decomposition.
[2024-05-29 02:36:44] [INFO ] Removed a total of 613 redundant transitions.
[2024-05-29 02:36:44] [INFO ] Flatten gal took : 174 ms
[2024-05-29 02:36:44] [INFO ] Fuse similar labels procedure discarded/fused a total of 847 labels/synchronizations in 56 ms.
[2024-05-29 02:36:44] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1292818462015153373.gal : 31 ms
[2024-05-29 02:36:44] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality3905933288287058718.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/ReachabilityCardinality1292818462015153373.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality3905933288287058718.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 ...307
Loading property file /tmp/ReachabilityCardinality3905933288287058718.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :109 after 179
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :15991 after 16043
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :16043 after 16043
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :16043 after 16043
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :16043 after 16043
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :16043 after 16043
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :16043 after 16043
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :16043 after 16043
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :16043 after 16633
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :16633 after 17393
Reachability property SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-07 is true.
FORMULA SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-07 TRUE TECHNIQUES DECISION_DIAGRAMS TOPOLOGICAL COLLATERAL_PROCESSING USE_NUPN
Found states matching all0 target predicate
Will report total states built up to this point. Computation was interrupted after 2049 fixpoint passes
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst\_mod\_flat,982836,3.75443,97288,4114,5889,43769,45333,1193,478733,2018,154466,0
Total reachable state count : 982836

Verifying 1 reachability properties.
Reachability property SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-07 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
SieveSingleMsgMbox-PT-d2m64-ReachabilityFireability-2024-07,72,3.76361,97288,78,147,43769,45333,1199,478733,2023,154466,0
All properties solved without resorting to model-checking.
Total runtime 214271 ms.

BK_STOP 1716950208750

--------------------
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//
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//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//../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="SieveSingleMsgMbox-PT-d2m64"
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 SieveSingleMsgMbox-PT-d2m64, 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 r378-smll-171683810800135"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/SieveSingleMsgMbox-PT-d2m64.tgz
mv SieveSingleMsgMbox-PT-d2m64 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 '' ReachabilityFireability.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
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 ;