Execution Chart

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

Trace from the execution

Formatting '/data/fkordon/mcc2026-input.r112-tall-177955701200552.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2026-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 2-5973
Executing tool gold2025
Input is DoubleExponent-PT-010, examination is QuasiLiveness
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r112-tall-177955701200552
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 556K
-rw-r--r-- 1 mcc users 6.3K Mar 6 16:57 CTLCardinality.txt
-rw-r--r-- 1 mcc users 67K Mar 6 16:57 CTLCardinality.xml
-rw-r--r-- 1 mcc users 4.4K Mar 6 16:57 CTLFireability.txt
-rw-r--r-- 1 mcc users 34K Mar 6 16:57 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Mar 3 18:30 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 4.1K Mar 15 09:36 LTLCardinality.txt
-rw-r--r-- 1 mcc users 29K Mar 15 09:36 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.4K Mar 15 09:36 LTLFireability.txt
-rw-r--r-- 1 mcc users 21K Mar 15 09:36 LTLFireability.xml
-rw-r--r-- 1 mcc users 11K Mar 6 16:57 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 106K Mar 6 16:57 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 5.3K Mar 6 16:57 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 37K Mar 6 16:57 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.7K Mar 15 09:36 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Mar 15 09:36 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 4 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 169K Mar 3 18:30 model.pnml

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

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

The expected result is a vector of booleans
BOOL_VECTOR

FORMULA_NAME QuasiLiveness

=== Now, execution of the tool begins

BK_START 1779631441074

Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=QuasiLiveness
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=DoubleExponent-PT-010
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
QuasiLiveness PT
Running Version 202505121319
[2026-05-24 14:04:02] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, QuasiLiveness, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 1800]
[2026-05-24 14:04:02] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-24 14:04:02] [INFO ] Load time of PNML (sax parser for PT used): 83 ms
[2026-05-24 14:04:02] [INFO ] Transformed 534 places.
[2026-05-24 14:04:02] [INFO ] Transformed 498 transitions.
[2026-05-24 14:04:02] [INFO ] Parsed PT model containing 534 places and 498 transitions and 1404 arcs in 173 ms.
Starting structural reductions in LIVENESS mode, iteration 0 : 534/534 places, 498/498 transitions.
Reduce places removed 4 places and 0 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 120 transitions
Trivial Post-agglo rules discarded 120 transitions
Performed 120 trivial Post agglomeration. Transition count delta: 120
Iterating post reduction 0 with 124 rules applied. Total rules applied 124 place count 530 transition count 378
Reduce places removed 120 places and 0 transitions.
Iterating post reduction 1 with 120 rules applied. Total rules applied 244 place count 410 transition count 378
Performed 20 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 20 Pre rules applied. Total rules applied 244 place count 410 transition count 358
Deduced a syphon composed of 20 places in 16 ms
Reduce places removed 20 places and 0 transitions.
Iterating global reduction 2 with 40 rules applied. Total rules applied 284 place count 390 transition count 358
Performed 94 Post agglomeration using F-continuation condition.Transition count delta: 94
Deduced a syphon composed of 94 places in 2 ms
Reduce places removed 94 places and 0 transitions.
Iterating global reduction 2 with 188 rules applied. Total rules applied 472 place count 296 transition count 264
Performed 18 Post agglomeration using F-continuation condition.Transition count delta: 0
Deduced a syphon composed of 18 places in 1 ms
Reduce places removed 18 places and 0 transitions.
Iterating global reduction 2 with 36 rules applied. Total rules applied 508 place count 278 transition count 264
Applied a total of 508 rules in 106 ms. Remains 278 /534 variables (removed 256) and now considering 264/498 (removed 234) transitions.
// Phase 1: matrix 264 rows 278 cols
[2026-05-24 14:04:02] [INFO ] Computed 51 invariants in 54 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:04:03] [INFO ] Implicit Places using invariants in 450 ms returned [229, 230]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 483 ms to find 2 implicit places.
Starting structural reductions in LIVENESS mode, iteration 1 : 276/534 places, 264/498 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 1 place count 276 transition count 263
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 1 with 1 rules applied. Total rules applied 2 place count 275 transition count 263
Performed 3 Post agglomeration using F-continuation condition.Transition count delta: 3
Deduced a syphon composed of 3 places in 2 ms
Reduce places removed 3 places and 0 transitions.
Iterating global reduction 2 with 6 rules applied. Total rules applied 8 place count 272 transition count 260
Applied a total of 8 rules in 16 ms. Remains 272 /276 variables (removed 4) and now considering 260/264 (removed 4) transitions.
// Phase 1: matrix 260 rows 272 cols
[2026-05-24 14:04:03] [INFO ] Computed 49 invariants in 12 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:04:03] [INFO ] Implicit Places using invariants in 181 ms returned []
[2026-05-24 14:04:03] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:04:03] [INFO ] State equation strengthened by 20 read => feed constraints.
[2026-05-24 14:04:04] [INFO ] Implicit Places using invariants and state equation in 1343 ms returned []
Implicit Place search using SMT with State Equation took 1528 ms to find 0 implicit places.
Starting structural reductions in LIVENESS mode, iteration 2 : 272/534 places, 260/498 transitions.
Finished structural reductions in LIVENESS mode , in 2 iterations and 2148 ms. Remains : 272/534 places, 260/498 transitions.
Discarding 58 transitions out of 260. Remains 202
Initial state reduction rules removed 1 formulas.
RANDOM walk for 40000 steps (4878 resets) in 1949 ms. (20 steps per ms) remains 187/201 properties
BEST_FIRST walk for 400 steps (27 resets) in 17 ms. (22 steps per ms) remains 187/187 properties
BEST_FIRST walk for 402 steps (24 resets) in 24 ms. (16 steps per ms) remains 187/187 properties
BEST_FIRST walk for 402 steps (29 resets) in 8 ms. (44 steps per ms) remains 187/187 properties
BEST_FIRST walk for 401 steps (29 resets) in 20 ms. (19 steps per ms) remains 187/187 properties
BEST_FIRST walk for 402 steps (26 resets) in 38 ms. (10 steps per ms) remains 187/187 properties
BEST_FIRST walk for 403 steps (29 resets) in 20 ms. (19 steps per ms) remains 187/187 properties
BEST_FIRST walk for 400 steps (27 resets) in 16 ms. (23 steps per ms) remains 187/187 properties
BEST_FIRST walk for 402 steps (27 resets) in 12 ms. (30 steps per ms) remains 187/187 properties
BEST_FIRST walk for 402 steps (33 resets) in 10 ms. (36 steps per ms) remains 187/187 properties
[2026-05-24 14:04:05] [INFO ] Flatten gal took : 120 ms
BEST_FIRST walk for 402 steps (28 resets) in 10 ms. (36 steps per ms) remains 187/187 properties
BEST_FIRST walk for 402 steps (30 resets) in 8 ms. (44 steps per ms) remains 187/187 properties
BEST_FIRST walk for 402 steps (27 resets) in 9 ms. (40 steps per ms) remains 187/187 properties
BEST_FIRST walk for 401 steps (29 resets) in 9 ms. (40 steps per ms) remains 187/187 properties
BEST_FIRST walk for 401 steps (22 resets) in 7 ms. (50 steps per ms) remains 187/187 properties
[2026-05-24 14:04:05] [INFO ] Flatten gal took : 36 ms
BEST_FIRST walk for 402 steps (27 resets) in 27 ms. (14 steps per ms) remains 187/187 properties
BEST_FIRST walk for 401 steps (29 resets) in 6 ms. (57 steps per ms) remains 187/187 properties
BEST_FIRST walk for 401 steps (26 resets) in 8 ms. (44 steps per ms) remains 187/187 properties
BEST_FIRST walk for 403 steps (34 resets) in 8 ms. (44 steps per ms) remains 187/187 properties
BEST_FIRST walk for 402 steps (30 resets) in 6 ms. (57 steps per ms) remains 187/187 properties
BEST_FIRST walk for 402 steps (29 resets) in 8 ms. (44 steps per ms) remains 187/187 properties
BEST_FIRST walk for 401 steps (32 resets) in 8 ms. (44 steps per ms) remains 187/187 properties
BEST_FIRST walk for 403 steps (25 resets) in 6 ms. (57 steps per ms) remains 187/187 properties
BEST_FIRST walk for 403 steps (30 resets) in 8 ms. (44 steps per ms) remains 187/187 properties
[2026-05-24 14:04:05] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality10076130514160692092.gal : 22 ms
BEST_FIRST walk for 403 steps (26 resets) in 9 ms. (40 steps per ms) remains 187/187 properties
[2026-05-24 14:04:05] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality4380080955223158073.prop : 3 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality10076130514160692092.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality4380080955223158073.prop' '--nowitness' '--gen-order' 'FOLLOW'
BEST_FIRST walk for 402 steps (27 resets) in 6 ms. (57 steps per ms) remains 187/187 properties
BEST_FIRST walk for 400 steps (32 resets) in 10 ms. (36 steps per ms) remains 187/187 properties

BEST_FIRST walk for 402 steps (28 resets) in 16 ms. (23 steps per ms) remains 187/187 properties
BEST_FIRST walk for 402 steps (27 resets) in 13 ms. (28 steps per ms) remains 187/187 properties
its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...329
BEST_FIRST walk for 402 steps (28 resets) in 15 ms. (25 steps per ms) remains 187/187 properties
BEST_FIRST walk for 402 steps (24 resets) in 7 ms. (50 steps per ms) remains 187/187 properties
BEST_FIRST walk for 402 steps (31 resets) in 9 ms. (40 steps per ms) remains 187/187 properties
BEST_FIRST walk for 401 steps (26 resets) in 30 ms. (12 steps per ms) remains 187/187 properties
BEST_FIRST walk for 401 steps (25 resets) in 7 ms. (50 steps per ms) remains 187/187 properties
BEST_FIRST walk for 400 steps (33 resets) in 10 ms. (36 steps per ms) remains 187/187 properties
BEST_FIRST walk for 404 steps (28 resets) in 10 ms. (36 steps per ms) remains 187/187 properties
Loading property file /tmp/ReachabilityCardinality4380080955223158073.prop.
BEST_FIRST walk for 401 steps (29 resets) in 19 ms. (20 steps per ms) remains 187/187 properties
BEST_FIRST walk for 403 steps (27 resets) in 20 ms. (19 steps per ms) remains 187/187 properties
BEST_FIRST walk for 401 steps (28 resets) in 7 ms. (50 steps per ms) remains 187/187 properties
BEST_FIRST walk for 402 steps (27 resets) in 7 ms. (50 steps per ms) remains 187/187 properties
SDD proceeding with computation,187 properties remain. new max is 4
BEST_FIRST walk for 401 steps (24 resets) in 17 ms. (22 steps per ms) remains 187/187 properties
SDD size :1 after 3
SDD proceeding with computation,187 properties remain. new max is 8
SDD size :3 after 8
BEST_FIRST walk for 402 steps (27 resets) in 6 ms. (57 steps per ms) remains 187/187 properties
BEST_FIRST walk for 401 steps (30 resets) in 16 ms. (23 steps per ms) remains 187/187 properties
BEST_FIRST walk for 403 steps (26 resets) in 6 ms. (57 steps per ms) remains 187/187 properties
SDD proceeding with computation,187 properties remain. new max is 16
SDD size :8 after 9
BEST_FIRST walk for 400 steps (28 resets) in 10 ms. (36 steps per ms) remains 187/187 properties
BEST_FIRST walk for 401 steps (32 resets) in 7 ms. (50 steps per ms) remains 187/187 properties
SDD proceeding with computation,187 properties remain. new max is 32
SDD size :9 after 14
BEST_FIRST walk for 400 steps (26 resets) in 8 ms. (44 steps per ms) remains 187/187 properties
BEST_FIRST walk for 401 steps (27 resets) in 6 ms. (57 steps per ms) remains 187/187 properties
BEST_FIRST walk for 400 steps (25 resets) in 6 ms. (57 steps per ms) remains 187/187 properties
BEST_FIRST walk for 401 steps (27 resets) in 7 ms. (50 steps per ms) remains 187/187 properties
BEST_FIRST walk for 401 steps (30 resets) in 7 ms. (50 steps per ms) remains 187/187 properties
SDD proceeding with computation,187 properties remain. new max is 64
SDD size :14 after 29
Reachability property qltransition_94 is true.
SDD proceeding with computation,186 properties remain. new max is 64
SDD size :29 after 62
Reachability property qltransition_250 is true.
Reachability property qltransition_208 is true.
Reachability property qltransition_179 is true.
Reachability property qltransition_178 is true.
Reachability property qltransition_118 is true.
Reachability property qltransition_117 is true.
Reachability property qltransition_116 is true.
Reachability property qltransition_111 is true.
Reachability property qltransition_107 is true.
Reachability property qltransition_28 is true.
SDD proceeding with computation,176 properties remain. new max is 64
SDD size :62 after 81
Reachability property qltransition_230 is true.
Reachability property qltransition_119 is true.
Reachability property qltransition_108 is true.
SDD proceeding with computation,173 properties remain. new max is 64
SDD size :81 after 133
SDD proceeding with computation,173 properties remain. new max is 128
SDD size :133 after 232
Reachability property qltransition_254 is true.
Reachability property qltransition_182 is true.
Reachability property qltransition_181 is true.
Reachability property qltransition_120 is true.
Reachability property qltransition_113 is true.
Reachability property qltransition_112 is true.
Reachability property qltransition_109 is true.
SDD proceeding with computation,166 properties remain. new max is 128
SDD size :232 after 424
SDD proceeding with computation,166 properties remain. new max is 256
SDD size :424 after 763
SDD proceeding with computation,166 properties remain. new max is 512
SDD size :763 after 1326
Reachability property qltransition_252 is true.
Reachability property qltransition_248 is true.
Reachability property qltransition_184 is true.
Reachability property qltransition_122 is true.
Reachability property qltransition_121 is true.
Reachability property qltransition_115 is true.
Reachability property qltransition_110 is true.
Reachability property qltransition_11 is true.
Reachability property qltransition_10 is true.
Reachability property qltransition_9 is true.
Reachability property qltransition_8 is true.
Reachability property qltransition_4 is true.
Reachability property qltransition_1 is true.
Reachability property qltransition_0 is true.
SDD proceeding with computation,152 properties remain. new max is 512
SDD size :1326 after 5359
SDD proceeding with computation,152 properties remain. new max is 1024
SDD size :5359 after 30047
Reachability property qltransition_188 is true.
Reachability property qltransition_125 is true.
Reachability property qltransition_124 is true.
Reachability property qltransition_12 is true.
Reachability property qltransition_6 is true.
Reachability property qltransition_5 is true.
Reachability property qltransition_2 is true.
SDD proceeding with computation,145 properties remain. new max is 1024
SDD size :30047 after 91265
SDD proceeding with computation,145 properties remain. new max is 2048
SDD size :91265 after 163523
SDD proceeding with computation,145 properties remain. new max is 4096
SDD size :163523 after 304117
SDD proceeding with computation,145 properties remain. new max is 8192
SDD size :304117 after 588182
Reachability property qltransition_192 is true.
Reachability property qltransition_186 is true.
Reachability property qltransition_128 is true.
Reachability property qltransition_127 is true.
Reachability property qltransition_25 is true.
Reachability property qltransition_23 is true.
Reachability property qltransition_22 is true.
Reachability property qltransition_18 is true.
Reachability property qltransition_14 is true.
Reachability property qltransition_13 is true.
Reachability property qltransition_7 is true.
Reachability property qltransition_3 is true.
SDD proceeding with computation,133 properties remain. new max is 8192
SDD size :588182 after 1.18021e+06
Reachability property qltransition_190 is true.
Reachability property qltransition_26 is true.
SDD proceeding with computation,131 properties remain. new max is 8192
SDD size :1.18021e+06 after 7.80197e+07
SDD proceeding with computation,131 properties remain. new max is 16384
SDD size :7.80197e+07 after 2.53597e+08
Probabilistic random walk after 100000 steps, saw 50010 distinct states, run finished after 2366 ms. (steps per millisecond=42 ) properties seen :35
[2026-05-24 14:04:08] [INFO ] Invariant cache hit.
[2026-05-24 14:04:08] [INFO ] State equation strengthened by 20 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/180 variables, 29/29 constraints. Problems are: Problem set: 0 solved, 131 unsolved
SDD proceeding with computation,131 properties remain. new max is 32768
SDD size :2.53597e+08 after 8.00333e+08
At refinement iteration 1 (INCLUDED_ONLY) 0/180 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 131 unsolved
At refinement iteration 2 (OVERLAPS) 38/218 variables, 6/35 constraints. Problems are: Problem set: 0 solved, 131 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/218 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 131 unsolved
At refinement iteration 4 (OVERLAPS) 38/256 variables, 10/45 constraints. Problems are: Problem set: 0 solved, 131 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/256 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 131 unsolved
At refinement iteration 6 (OVERLAPS) 4/260 variables, 2/47 constraints. Problems are: Problem set: 0 solved, 131 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 260/532 variables, and 47 constraints, problems are : Problem set: 0 solved, 131 unsolved in 5040 ms.
Refiners :[Positive P Invariants (semi-flows): 0/2 constraints, Generalized P Invariants (flows): 47/47 constraints, State Equation: 0/272 constraints, ReadFeed: 0/20 constraints, PredecessorRefiner: 131/131 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 131 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/180 variables, 29/29 constraints. Problems are: Problem set: 0 solved, 131 unsolved
SDD proceeding with computation,131 properties remain. new max is 65536
SDD size :8.00333e+08 after 2.46555e+09
At refinement iteration 1 (INCLUDED_ONLY) 0/180 variables, 0/29 constraints. Problems are: Problem set: 0 solved, 131 unsolved
At refinement iteration 2 (OVERLAPS) 38/218 variables, 6/35 constraints. Problems are: Problem set: 0 solved, 131 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/218 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 131 unsolved
At refinement iteration 4 (OVERLAPS) 38/256 variables, 10/45 constraints. Problems are: Problem set: 0 solved, 131 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/256 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 131 unsolved
At refinement iteration 6 (OVERLAPS) 4/260 variables, 2/47 constraints. Problems are: Problem set: 0 solved, 131 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/260 variables, 0/47 constraints. Problems are: Problem set: 0 solved, 131 unsolved
At refinement iteration 8 (OVERLAPS) 4/264 variables, 2/49 constraints. Problems are: Problem set: 0 solved, 131 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 264/532 variables, and 49 constraints, problems are : Problem set: 0 solved, 131 unsolved in 5008 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 47/47 constraints, State Equation: 0/272 constraints, ReadFeed: 0/20 constraints, PredecessorRefiner: 0/131 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 10164ms problems are : Problem set: 0 solved, 131 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 180 out of 272 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 272/272 places, 260/260 transitions.
Free-agglomeration rule (complex) applied 9 times.
Iterating global reduction 0 with 9 rules applied. Total rules applied 9 place count 272 transition count 251
Reduce places removed 9 places and 0 transitions.
Iterating post reduction 0 with 9 rules applied. Total rules applied 18 place count 263 transition count 251
Partial Free-agglomeration rule applied 12 times.
Drop transitions (Partial Free agglomeration) removed 12 transitions
Iterating global reduction 1 with 12 rules applied. Total rules applied 30 place count 263 transition count 251
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 1 with 1 rules applied. Total rules applied 31 place count 262 transition count 250
Applied a total of 31 rules in 69 ms. Remains 262 /272 variables (removed 10) and now considering 250/260 (removed 10) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 83 ms. Remains : 262/272 places, 250/260 transitions.
SDD proceeding with computation,131 properties remain. new max is 131072
SDD size :2.46555e+09 after 7.42745e+09
RANDOM walk for 4000000 steps (513534 resets) in 57511 ms. (69 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40001 steps (3417 resets) in 433 ms. (92 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40000 steps (3342 resets) in 588 ms. (67 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40002 steps (3408 resets) in 417 ms. (95 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40000 steps (3359 resets) in 423 ms. (94 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40002 steps (3395 resets) in 380 ms. (104 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40002 steps (3335 resets) in 416 ms. (95 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40001 steps (3375 resets) in 353 ms. (112 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40002 steps (3414 resets) in 402 ms. (99 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40001 steps (3371 resets) in 435 ms. (91 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40002 steps (3438 resets) in 379 ms. (105 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40001 steps (3398 resets) in 490 ms. (81 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40002 steps (3345 resets) in 394 ms. (101 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40000 steps (3419 resets) in 474 ms. (84 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40000 steps (3389 resets) in 366 ms. (108 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40001 steps (3381 resets) in 474 ms. (84 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40002 steps (3404 resets) in 395 ms. (101 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40002 steps (3422 resets) in 436 ms. (91 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40001 steps (3381 resets) in 425 ms. (93 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40000 steps (3378 resets) in 423 ms. (94 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40001 steps (3338 resets) in 454 ms. (87 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40000 steps (3351 resets) in 557 ms. (71 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40001 steps (3403 resets) in 532 ms. (75 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40000 steps (3370 resets) in 421 ms. (94 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40000 steps (3384 resets) in 364 ms. (109 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40001 steps (3380 resets) in 391 ms. (102 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40002 steps (3372 resets) in 467 ms. (85 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40001 steps (3343 resets) in 429 ms. (93 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40002 steps (3412 resets) in 365 ms. (109 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40003 steps (3375 resets) in 346 ms. (115 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40002 steps (3373 resets) in 456 ms. (87 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40001 steps (3425 resets) in 403 ms. (99 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40001 steps (3432 resets) in 405 ms. (98 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40001 steps (3426 resets) in 465 ms. (85 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40000 steps (3399 resets) in 392 ms. (101 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40001 steps (3381 resets) in 535 ms. (74 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40001 steps (3356 resets) in 405 ms. (98 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40002 steps (3349 resets) in 409 ms. (97 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40003 steps (3425 resets) in 377 ms. (105 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40000 steps (3331 resets) in 409 ms. (97 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40001 steps (3387 resets) in 438 ms. (91 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40003 steps (3357 resets) in 424 ms. (94 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40001 steps (3429 resets) in 365 ms. (109 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40002 steps (3417 resets) in 412 ms. (96 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40002 steps (3381 resets) in 426 ms. (93 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40000 steps (3427 resets) in 469 ms. (85 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40002 steps (3401 resets) in 436 ms. (91 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40000 steps (3446 resets) in 394 ms. (101 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40000 steps (3398 resets) in 448 ms. (89 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40003 steps (3409 resets) in 433 ms. (92 steps per ms) remains 131/131 properties
BEST_FIRST walk for 40001 steps (3431 resets) in 459 ms. (86 steps per ms) remains 131/131 properties
Reachability property qltransition_196 is true.
Reachability property qltransition_131 is true.
Reachability property qltransition_130 is true.
Reachability property qltransition_27 is true.
Reachability property qltransition_20 is true.
Reachability property qltransition_19 is true.
Reachability property qltransition_16 is true.
SDD proceeding with computation,124 properties remain. new max is 131072
SDD size :7.42745e+09 after 1.73289e+10
SDD proceeding with computation,124 properties remain. new max is 262144
SDD size :1.73289e+10 after 2.82268e+10
SDD proceeding with computation,124 properties remain. new max is 524288
SDD size :2.82268e+10 after 5.01387e+10
Interrupted probabilistic random walk after 4145726 steps, run timeout after 66001 ms. (steps per millisecond=62 ) properties seen :0 out of 131
Probabilistic random walk after 4145726 steps, saw 2072795 distinct states, run finished after 66005 ms. (steps per millisecond=62 ) properties seen :0
// Phase 1: matrix 250 rows 262 cols
[2026-05-24 14:05:47] [INFO ] Computed 49 invariants in 34 ms
[2026-05-24 14:05:47] [INFO ] State equation strengthened by 24 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/171 variables, 22/22 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/171 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 2 (OVERLAPS) 33/204 variables, 11/33 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 0/33 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 4 (OVERLAPS) 43/247 variables, 11/44 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/247 variables, 0/44 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 6 (OVERLAPS) 5/252 variables, 3/47 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/252 variables, 0/47 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 8 (OVERLAPS) 249/501 variables, 252/299 constraints. Problems are: Problem set: 0 solved, 124 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (INCLUDED_ONLY) 0/501 variables, 24/323 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/501 variables, 0/323 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 11 (OVERLAPS) 10/511 variables, 9/332 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/511 variables, 2/334 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/511 variables, 0/334 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 14 (OVERLAPS) 1/512 variables, 1/335 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/512 variables, 0/335 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 16 (OVERLAPS) 0/512 variables, 0/335 constraints. Problems are: Problem set: 0 solved, 124 unsolved
No progress, stopping.
After SMT solving in domain Real declared 512/512 variables, and 335 constraints, problems are : Problem set: 0 solved, 124 unsolved in 21004 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 47/47 constraints, State Equation: 262/262 constraints, ReadFeed: 24/24 constraints, PredecessorRefiner: 124/124 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 124 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/171 variables, 22/22 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/171 variables, 0/22 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 2 (OVERLAPS) 33/204 variables, 11/33 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/204 variables, 0/33 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 4 (OVERLAPS) 43/247 variables, 11/44 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/247 variables, 0/44 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 6 (OVERLAPS) 5/252 variables, 3/47 constraints. Problems are: Problem set: 0 solved, 124 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:06:10] [INFO ] Deduced a trap composed of 4 places in 51 ms of which 4 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/252 variables, 1/48 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/252 variables, 0/48 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 9 (OVERLAPS) 249/501 variables, 252/300 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/501 variables, 24/324 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/501 variables, 120/444 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/501 variables, 0/444 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 13 (OVERLAPS) 10/511 variables, 9/453 constraints. Problems are: Problem set: 0 solved, 124 unsolved
SDD proceeding with computation,124 properties remain. new max is 1048576
SDD size :5.01387e+10 after 9.44168e+10
At refinement iteration 14 (INCLUDED_ONLY) 0/511 variables, 2/455 constraints. Problems are: Problem set: 0 solved, 124 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 511/512 variables, and 459 constraints, problems are : Problem set: 0 solved, 124 unsolved in 45018 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 47/47 constraints, State Equation: 261/262 constraints, ReadFeed: 24/24 constraints, PredecessorRefiner: 124/124 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 66095ms problems are : Problem set: 0 solved, 124 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 171 out of 262 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 262/262 places, 250/250 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 262 transition count 249
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 261 transition count 249
Partial Free-agglomeration rule applied 4 times.
Drop transitions (Partial Free agglomeration) removed 4 transitions
Iterating global reduction 1 with 4 rules applied. Total rules applied 6 place count 261 transition count 249
Applied a total of 6 rules in 23 ms. Remains 261 /262 variables (removed 1) and now considering 249/250 (removed 1) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 23 ms. Remains : 261/262 places, 249/250 transitions.
RANDOM walk for 4000000 steps (512774 resets) in 39845 ms. (100 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3410 resets) in 353 ms. (113 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3446 resets) in 334 ms. (119 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3364 resets) in 289 ms. (137 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3398 resets) in 342 ms. (116 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3421 resets) in 395 ms. (101 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3382 resets) in 324 ms. (123 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3377 resets) in 388 ms. (102 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3350 resets) in 313 ms. (127 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3376 resets) in 352 ms. (113 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3370 resets) in 380 ms. (104 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3440 resets) in 363 ms. (109 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3434 resets) in 316 ms. (126 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3412 resets) in 382 ms. (104 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3395 resets) in 326 ms. (122 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3415 resets) in 315 ms. (126 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3366 resets) in 423 ms. (94 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3400 resets) in 438 ms. (91 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3469 resets) in 363 ms. (109 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3405 resets) in 347 ms. (114 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3342 resets) in 323 ms. (123 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3389 resets) in 407 ms. (98 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3403 resets) in 325 ms. (122 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3397 resets) in 375 ms. (106 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3382 resets) in 324 ms. (123 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3368 resets) in 347 ms. (114 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40003 steps (3357 resets) in 382 ms. (104 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3380 resets) in 324 ms. (123 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3417 resets) in 405 ms. (98 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3376 resets) in 313 ms. (127 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3400 resets) in 368 ms. (108 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40003 steps (3429 resets) in 320 ms. (124 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3405 resets) in 366 ms. (108 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40003 steps (3389 resets) in 345 ms. (115 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3332 resets) in 452 ms. (88 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3379 resets) in 353 ms. (113 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3395 resets) in 385 ms. (103 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3398 resets) in 408 ms. (97 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3400 resets) in 387 ms. (103 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3409 resets) in 317 ms. (125 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3371 resets) in 433 ms. (92 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3448 resets) in 317 ms. (125 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40003 steps (3435 resets) in 271 ms. (147 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3352 resets) in 308 ms. (129 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3440 resets) in 312 ms. (127 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3374 resets) in 360 ms. (110 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3376 resets) in 314 ms. (126 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3400 resets) in 378 ms. (105 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3380 resets) in 315 ms. (126 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3367 resets) in 409 ms. (97 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3416 resets) in 322 ms. (123 steps per ms) remains 124/124 properties
Interrupted probabilistic random walk after 2715289 steps, run timeout after 51001 ms. (steps per millisecond=53 ) properties seen :0 out of 124
Probabilistic random walk after 2715289 steps, saw 1357746 distinct states, run finished after 51001 ms. (steps per millisecond=53 ) properties seen :0
// Phase 1: matrix 249 rows 261 cols
[2026-05-24 14:08:01] [INFO ] Computed 49 invariants in 16 ms
[2026-05-24 14:08:01] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/171 variables, 20/20 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/171 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 2 (OVERLAPS) 40/211 variables, 13/33 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/211 variables, 0/33 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 4 (OVERLAPS) 33/244 variables, 12/45 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/244 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 6 (OVERLAPS) 7/251 variables, 2/47 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/251 variables, 0/47 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 8 (OVERLAPS) 248/499 variables, 251/298 constraints. Problems are: Problem set: 0 solved, 124 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (INCLUDED_ONLY) 0/499 variables, 26/324 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/499 variables, 0/324 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 11 (OVERLAPS) 10/509 variables, 9/333 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/509 variables, 2/335 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/509 variables, 0/335 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 14 (OVERLAPS) 1/510 variables, 1/336 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/510 variables, 0/336 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 16 (OVERLAPS) 0/510 variables, 0/336 constraints. Problems are: Problem set: 0 solved, 124 unsolved
No progress, stopping.
After SMT solving in domain Real declared 510/510 variables, and 336 constraints, problems are : Problem set: 0 solved, 124 unsolved in 25779 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 47/47 constraints, State Equation: 261/261 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 124/124 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 124 unsolved
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/171 variables, 20/20 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/171 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 2 (OVERLAPS) 40/211 variables, 13/33 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/211 variables, 0/33 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 4 (OVERLAPS) 33/244 variables, 12/45 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/244 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 6 (OVERLAPS) 7/251 variables, 2/47 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/251 variables, 0/47 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 8 (OVERLAPS) 248/499 variables, 251/298 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/499 variables, 26/324 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/499 variables, 120/444 constraints. Problems are: Problem set: 0 solved, 124 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:08:46] [INFO ] Deduced a trap along path composed of 2 places in 22 ms of which 2 ms to minimize.
At refinement iteration 11 (INCLUDED_ONLY) 0/499 variables, 1/445 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/499 variables, 0/445 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 13 (OVERLAPS) 10/509 variables, 9/454 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/509 variables, 2/456 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/509 variables, 4/460 constraints. Problems are: Problem set: 0 solved, 124 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 509/510 variables, and 460 constraints, problems are : Problem set: 0 solved, 124 unsolved in 75014 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 47/47 constraints, State Equation: 260/261 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 124/124 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 100838ms problems are : Problem set: 0 solved, 124 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 171 out of 261 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 261/261 places, 249/249 transitions.
Applied a total of 0 rules in 14 ms. Remains 261 /261 variables (removed 0) and now considering 249/249 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 14 ms. Remains : 261/261 places, 249/249 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 261/261 places, 249/249 transitions.
Applied a total of 0 rules in 7 ms. Remains 261 /261 variables (removed 0) and now considering 249/249 (removed 0) transitions.
[2026-05-24 14:09:42] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:09:42] [INFO ] Implicit Places using invariants in 104 ms returned []
[2026-05-24 14:09:42] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:09:42] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-24 14:09:43] [INFO ] Implicit Places using invariants and state equation in 883 ms returned [20, 26, 143, 213, 252, 258]
[2026-05-24 14:09:43] [INFO ] Actually due to overlaps returned [213, 143]
Discarding 2 places :
Implicit Place search using SMT with State Equation took 991 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 259/261 places, 249/249 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 259 transition count 248
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 258 transition count 248
Applied a total of 2 rules in 28 ms. Remains 258 /259 variables (removed 1) and now considering 248/249 (removed 1) transitions.
// Phase 1: matrix 248 rows 258 cols
[2026-05-24 14:09:43] [INFO ] Computed 47 invariants in 15 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:09:43] [INFO ] Implicit Places using invariants in 100 ms returned []
[2026-05-24 14:09:43] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:09:43] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-24 14:09:44] [INFO ] Implicit Places using invariants and state equation in 764 ms returned [20, 26, 249, 255]
[2026-05-24 14:09:44] [INFO ] Actually due to overlaps returned [255, 249]
Discarding 2 places :
Implicit Place search using SMT with State Equation took 870 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 2 : 256/261 places, 248/249 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 256 transition count 247
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 255 transition count 247
Applied a total of 2 rules in 21 ms. Remains 255 /256 variables (removed 1) and now considering 247/248 (removed 1) transitions.
// Phase 1: matrix 247 rows 255 cols
[2026-05-24 14:09:44] [INFO ] Computed 45 invariants in 15 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:09:44] [INFO ] Implicit Places using invariants in 121 ms returned []
[2026-05-24 14:09:44] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:09:44] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-24 14:09:45] [INFO ] Implicit Places using invariants and state equation in 691 ms returned [20, 26]
Discarding 2 places :
Implicit Place search using SMT with State Equation took 816 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 3 : 253/261 places, 247/249 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 253 transition count 246
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 252 transition count 246
Applied a total of 2 rules in 27 ms. Remains 252 /253 variables (removed 1) and now considering 246/247 (removed 1) transitions.
// Phase 1: matrix 246 rows 252 cols
[2026-05-24 14:09:45] [INFO ] Computed 43 invariants in 14 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:09:45] [INFO ] Implicit Places using invariants in 92 ms returned []
[2026-05-24 14:09:45] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:09:45] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-24 14:09:46] [INFO ] Implicit Places using invariants and state equation in 710 ms returned []
Implicit Place search using SMT with State Equation took 807 ms to find 0 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 4 : 252/261 places, 246/249 transitions.
Finished structural reductions in REACHABILITY mode , in 4 iterations and 3567 ms. Remains : 252/261 places, 246/249 transitions.
RANDOM walk for 4000000 steps (577577 resets) in 38626 ms. (103 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3675 resets) in 351 ms. (113 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40003 steps (3599 resets) in 333 ms. (119 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3667 resets) in 287 ms. (138 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3641 resets) in 345 ms. (115 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3643 resets) in 259 ms. (153 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3642 resets) in 278 ms. (143 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3674 resets) in 329 ms. (121 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3749 resets) in 326 ms. (122 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3674 resets) in 285 ms. (139 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3635 resets) in 371 ms. (107 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3629 resets) in 274 ms. (145 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3626 resets) in 255 ms. (156 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40003 steps (3638 resets) in 278 ms. (143 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3617 resets) in 363 ms. (109 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3730 resets) in 421 ms. (94 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3576 resets) in 355 ms. (112 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3695 resets) in 335 ms. (119 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3593 resets) in 383 ms. (104 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3707 resets) in 274 ms. (145 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40003 steps (3664 resets) in 329 ms. (121 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3691 resets) in 272 ms. (146 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3660 resets) in 404 ms. (98 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3652 resets) in 343 ms. (116 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3648 resets) in 325 ms. (122 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40004 steps (3602 resets) in 389 ms. (102 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3627 resets) in 324 ms. (123 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40003 steps (3705 resets) in 293 ms. (136 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40003 steps (3661 resets) in 319 ms. (125 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3617 resets) in 300 ms. (132 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3700 resets) in 323 ms. (123 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3625 resets) in 282 ms. (141 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40003 steps (3618 resets) in 337 ms. (118 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40003 steps (3677 resets) in 276 ms. (144 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40003 steps (3595 resets) in 340 ms. (117 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3673 resets) in 340 ms. (117 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3615 resets) in 265 ms. (150 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3720 resets) in 302 ms. (132 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40003 steps (3636 resets) in 290 ms. (137 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3649 resets) in 447 ms. (89 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3576 resets) in 323 ms. (123 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3721 resets) in 253 ms. (157 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40004 steps (3617 resets) in 344 ms. (115 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40003 steps (3657 resets) in 333 ms. (119 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3726 resets) in 274 ms. (145 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3668 resets) in 322 ms. (123 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3661 resets) in 339 ms. (117 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3682 resets) in 315 ms. (126 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40004 steps (3676 resets) in 280 ms. (142 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3654 resets) in 307 ms. (129 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40003 steps (3604 resets) in 263 ms. (151 steps per ms) remains 124/124 properties
SDD proceeding with computation,124 properties remain. new max is 2097152
SDD size :9.44168e+10 after 1.7808e+11
Probably explored full state space saw : 681098 states, properties seen :0
Probabilistic random walk after 1362238 steps, saw 681098 distinct states, run finished after 23954 ms. (steps per millisecond=56 ) properties seen :0
Interrupted probabilistic random walk after 2888903 steps, run timeout after 48001 ms. (steps per millisecond=60 ) properties seen :0 out of 124
Exhaustive walk after 2888903 steps, saw 1444524 distinct states, run finished after 48001 ms. (steps per millisecond=60 ) properties seen :0
[2026-05-24 14:11:14] [INFO ] Invariant cache hit.
[2026-05-24 14:11:14] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 90.0 s and query timeout 9000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/171 variables, 28/28 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/171 variables, 0/28 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 2 (OVERLAPS) 51/222 variables, 5/33 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/222 variables, 0/33 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 4 (OVERLAPS) 20/242 variables, 8/41 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/242 variables, 0/41 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 6 (OVERLAPS) 245/487 variables, 242/283 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/487 variables, 26/309 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/487 variables, 0/309 constraints. Problems are: Problem set: 0 solved, 124 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (OVERLAPS) 10/497 variables, 9/318 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/497 variables, 2/320 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/497 variables, 0/320 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 12 (OVERLAPS) 1/498 variables, 1/321 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/498 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 14 (OVERLAPS) 0/498 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 124 unsolved
No progress, stopping.
After SMT solving in domain Real declared 498/498 variables, and 321 constraints, problems are : Problem set: 0 solved, 124 unsolved in 21064 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 124/124 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 124 unsolved
Starting Z3 with timeout 90.0 s and query timeout 9000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/171 variables, 28/28 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/171 variables, 0/28 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 2 (OVERLAPS) 51/222 variables, 5/33 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/222 variables, 0/33 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 4 (OVERLAPS) 20/242 variables, 8/41 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/242 variables, 0/41 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 6 (OVERLAPS) 245/487 variables, 242/283 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/487 variables, 26/309 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/487 variables, 120/429 constraints. Problems are: Problem set: 0 solved, 124 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:11:50] [INFO ] Deduced a trap along path composed of 4 places in 26 ms of which 2 ms to minimize.
At refinement iteration 9 (INCLUDED_ONLY) 0/487 variables, 1/430 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/487 variables, 0/430 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 11 (OVERLAPS) 10/497 variables, 9/439 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/497 variables, 2/441 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/497 variables, 4/445 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/497 variables, 0/445 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 15 (OVERLAPS) 1/498 variables, 1/446 constraints. Problems are: Problem set: 0 solved, 124 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:12:43] [INFO ] Deduced a trap composed of 10 places in 46 ms of which 3 ms to minimize.
At refinement iteration 16 (INCLUDED_ONLY) 0/498 variables, 1/447 constraints. Problems are: Problem set: 0 solved, 124 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:12:54] [INFO ] Deduced a trap composed of 16 places in 85 ms of which 5 ms to minimize.
At refinement iteration 17 (INCLUDED_ONLY) 0/498 variables, 1/448 constraints. Problems are: Problem set: 0 solved, 124 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 498/498 variables, and 448 constraints, problems are : Problem set: 0 solved, 124 unsolved in 90013 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 124/124 constraints, Known Traps: 2/2 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 111095ms problems are : Problem set: 0 solved, 124 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 171 out of 252 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 252/252 places, 246/246 transitions.
Applied a total of 0 rules in 15 ms. Remains 252 /252 variables (removed 0) and now considering 246/246 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 15 ms. Remains : 252/252 places, 246/246 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 252/252 places, 246/246 transitions.
Applied a total of 0 rules in 7 ms. Remains 252 /252 variables (removed 0) and now considering 246/246 (removed 0) transitions.
[2026-05-24 14:13:05] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:13:05] [INFO ] Implicit Places using invariants in 90 ms returned []
[2026-05-24 14:13:05] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:13:06] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-24 14:13:06] [INFO ] Implicit Places using invariants and state equation in 704 ms returned []
Implicit Place search using SMT with State Equation took 800 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-24 14:13:06] [INFO ] Redundant transitions in 16 ms returned []
Running 245 sub problems to find dead transitions.
[2026-05-24 14:13:06] [INFO ] Invariant cache hit.
[2026-05-24 14:13:06] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/251 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/251 variables, 41/43 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/251 variables, 0/43 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 3 (OVERLAPS) 246/497 variables, 251/294 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/497 variables, 26/320 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/497 variables, 0/320 constraints. Problems are: Problem set: 0 solved, 245 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 1/498 variables, 1/321 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/498 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 8 (OVERLAPS) 0/498 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 245 unsolved
No progress, stopping.
After SMT solving in domain Real declared 498/498 variables, and 321 constraints, problems are : Problem set: 0 solved, 245 unsolved in 30010 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 245/245 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 245 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/251 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/251 variables, 41/43 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/251 variables, 0/43 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 3 (OVERLAPS) 246/497 variables, 251/294 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/497 variables, 26/320 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/497 variables, 245/565 constraints. Problems are: Problem set: 0 solved, 245 unsolved
Detected timeout of ITS tools.
[2026-05-24 14:14:05] [INFO ] Flatten gal took : 18 ms
[2026-05-24 14:14:05] [INFO ] Applying decomposition
[2026-05-24 14:14:06] [INFO ] Flatten gal took : 17 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph3076017582897875964.txt' '-o' '/tmp/graph3076017582897875964.bin' '-w' '/tmp/graph3076017582897875964.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph3076017582897875964.bin' '-l' '-1' '-v' '-w' '/tmp/graph3076017582897875964.weights' '-q' '0' '-e' '0.001'
[2026-05-24 14:14:06] [INFO ] Decomposing Gal with order
[2026-05-24 14:14:06] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-24 14:14:06] [INFO ] Removed a total of 201 redundant transitions.
[2026-05-24 14:14:06] [INFO ] Flatten gal took : 67 ms
[2026-05-24 14:14:06] [INFO ] Fuse similar labels procedure discarded/fused a total of 4 labels/synchronizations in 11 ms.
[2026-05-24 14:14:06] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality9031102969789533755.gal : 8 ms
[2026-05-24 14:14:06] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality14050726405232546787.prop : 1 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality9031102969789533755.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality14050726405232546787.prop' '--nowitness'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...308
Loading property file /tmp/ReachabilityCardinality14050726405232546787.prop.
SDD proceeding with computation,124 properties remain. new max is 4
SDD size :1 after 7
SDD proceeding with computation,124 properties remain. new max is 8
SDD size :7 after 21
SDD proceeding with computation,124 properties remain. new max is 16
SDD size :80 after 116
SDD proceeding with computation,124 properties remain. new max is 32
SDD size :244 after 262
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 497/498 variables, and 565 constraints, problems are : Problem set: 0 solved, 245 unsolved in 30014 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 251/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 245/245 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 60065ms problems are : Problem set: 0 solved, 245 unsolved
Search for dead transitions found 0 dead transitions in 60068ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 60903 ms. Remains : 252/252 places, 246/246 transitions.
RANDOM walk for 400000 steps (57581 resets) in 5836 ms. (68 steps per ms) remains 171/171 properties
Running SMT prover for 171 properties.
[2026-05-24 14:14:08] [INFO ] Invariant cache hit.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-24 14:14:08] [INFO ] [Real]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-24 14:14:08] [INFO ] [Real]Absence check using 2 positive and 41 generalized place invariants in 9 ms returned sat
[2026-05-24 14:14:09] [INFO ] After 675ms SMT Verify possible using state equation in real domain returned unsat :0 sat :171
[2026-05-24 14:14:09] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-24 14:14:10] [INFO ] After 1034ms SMT Verify possible using 26 Read/Feed constraints in real domain returned unsat :0 sat :171
TRAPS : Iteration 0
[2026-05-24 14:14:15] [INFO ] After 5611ms SMT Verify possible using trap constraints in real domain returned unsat :0 sat :0 real:171
[2026-05-24 14:14:15] [INFO ] After 6450ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:171
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-24 14:14:15] [INFO ] [Nat]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-24 14:14:15] [INFO ] [Nat]Absence check using 2 positive and 41 generalized place invariants in 8 ms returned sat
[2026-05-24 14:14:16] [INFO ] After 671ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :171
[2026-05-24 14:14:17] [INFO ] After 1886ms SMT Verify possible using 26 Read/Feed constraints in natural domain returned unsat :0 sat :171
TRAPS : Iteration 0
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:18] [INFO ] Deduced a trap composed of 10 places in 60 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:18] [INFO ] Deduced a trap composed of 13 places in 71 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:18] [INFO ] Deduced a trap composed of 12 places in 68 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:18] [INFO ] Deduced a trap composed of 16 places in 87 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:18] [INFO ] Deduced a trap composed of 19 places in 63 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:18] [INFO ] Deduced a trap composed of 19 places in 65 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:18] [INFO ] Deduced a trap composed of 23 places in 64 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:18] [INFO ] Deduced a trap composed of 24 places in 62 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:18] [INFO ] Deduced a trap composed of 21 places in 57 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:18] [INFO ] Deduced a trap composed of 24 places in 75 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:19] [INFO ] Deduced a trap composed of 9 places in 70 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:19] [INFO ] Deduced a trap composed of 4 places in 78 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:19] [INFO ] Deduced a trap composed of 5 places in 74 ms of which 5 ms to minimize.
[2026-05-24 14:14:19] [INFO ] Trap strengthening (SAT) tested/added 14/13 trap constraints in 1317 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:19] [INFO ] Deduced a trap composed of 15 places in 51 ms of which 4 ms to minimize.
[2026-05-24 14:14:19] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 75 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:19] [INFO ] Deduced a trap composed of 21 places in 65 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:19] [INFO ] Deduced a trap composed of 28 places in 57 ms of which 6 ms to minimize.
[2026-05-24 14:14:19] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 179 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:20] [INFO ] Deduced a trap composed of 24 places in 57 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:20] [INFO ] Deduced a trap composed of 26 places in 59 ms of which 5 ms to minimize.
[2026-05-24 14:14:20] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 162 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:20] [INFO ] Deduced a trap composed of 28 places in 55 ms of which 3 ms to minimize.
[2026-05-24 14:14:20] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 76 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:20] [INFO ] Deduced a trap composed of 28 places in 49 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:20] [INFO ] Deduced a trap composed of 32 places in 44 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:21] [INFO ] Deduced a trap composed of 32 places in 49 ms of which 4 ms to minimize.
[2026-05-24 14:14:21] [INFO ] Trap strengthening (SAT) tested/added 4/3 trap constraints in 200 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:21] [INFO ] Deduced a trap composed of 30 places in 58 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:21] [INFO ] Deduced a trap composed of 36 places in 50 ms of which 4 ms to minimize.
[2026-05-24 14:14:21] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 150 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:22] [INFO ] Deduced a trap composed of 32 places in 49 ms of which 2 ms to minimize.
[2026-05-24 14:14:22] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 76 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:22] [INFO ] Deduced a trap composed of 40 places in 45 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:22] [INFO ] Deduced a trap composed of 40 places in 44 ms of which 2 ms to minimize.
[2026-05-24 14:14:22] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 137 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:22] [INFO ] Deduced a trap composed of 20 places in 56 ms of which 4 ms to minimize.
[2026-05-24 14:14:22] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 77 ms
SDD proceeding with computation,124 properties remain. new max is 64
SDD size :1.15341e+06 after 1.15454e+06
TRAPS : Iteration 1
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:26] [INFO ] Deduced a trap composed of 34 places in 48 ms of which 4 ms to minimize.
[2026-05-24 14:14:26] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 75 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:26] [INFO ] Deduced a trap composed of 36 places in 47 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:26] [INFO ] Deduced a trap composed of 38 places in 37 ms of which 4 ms to minimize.
[2026-05-24 14:14:26] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 121 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:27] [INFO ] Deduced a trap composed of 8 places in 75 ms of which 5 ms to minimize.
[2026-05-24 14:14:27] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 105 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:27] [INFO ] Deduced a trap composed of 9 places in 66 ms of which 5 ms to minimize.
[2026-05-24 14:14:27] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 98 ms
TRAPS : Iteration 2
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:32] [INFO ] Deduced a trap composed of 14 places in 60 ms of which 4 ms to minimize.
[2026-05-24 14:14:32] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 93 ms
TRAPS : Iteration 3
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:14:41] [INFO ] Deduced a trap composed of 35 places in 38 ms of which 2 ms to minimize.
[2026-05-24 14:14:42] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 68 ms
TRAPS : Iteration 4
[2026-05-24 14:14:48] [INFO ] After 32505ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :171
[2026-05-24 14:14:49] [INFO ] After 34317ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :171
RANDOM walk for 4000000 steps (577255 resets) in 38653 ms. (103 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3619 resets) in 297 ms. (134 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3668 resets) in 384 ms. (103 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3714 resets) in 376 ms. (106 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3675 resets) in 317 ms. (125 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3653 resets) in 353 ms. (113 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3619 resets) in 299 ms. (133 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3691 resets) in 292 ms. (136 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3690 resets) in 357 ms. (111 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3661 resets) in 289 ms. (137 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40003 steps (3714 resets) in 342 ms. (116 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3656 resets) in 293 ms. (136 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3595 resets) in 337 ms. (118 steps per ms) remains 124/124 properties
SDD proceeding with computation,124 properties remain. new max is 128
SDD size :1.15454e+06 after 5.22048e+06
BEST_FIRST walk for 40000 steps (3652 resets) in 285 ms. (139 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3650 resets) in 292 ms. (136 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3606 resets) in 286 ms. (139 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3648 resets) in 347 ms. (114 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3632 resets) in 295 ms. (135 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3607 resets) in 350 ms. (113 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3674 resets) in 374 ms. (106 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3724 resets) in 338 ms. (118 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3640 resets) in 299 ms. (133 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3669 resets) in 353 ms. (112 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3695 resets) in 309 ms. (129 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3660 resets) in 357 ms. (111 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3639 resets) in 370 ms. (107 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3694 resets) in 315 ms. (126 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3628 resets) in 258 ms. (154 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3628 resets) in 286 ms. (139 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3689 resets) in 313 ms. (127 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40003 steps (3703 resets) in 266 ms. (149 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3573 resets) in 287 ms. (138 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3666 resets) in 283 ms. (140 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3554 resets) in 343 ms. (116 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40003 steps (3671 resets) in 350 ms. (113 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40003 steps (3645 resets) in 316 ms. (126 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3665 resets) in 363 ms. (109 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3739 resets) in 354 ms. (112 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3663 resets) in 305 ms. (130 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3649 resets) in 366 ms. (108 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40003 steps (3635 resets) in 362 ms. (110 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40001 steps (3674 resets) in 267 ms. (149 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3637 resets) in 373 ms. (106 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3582 resets) in 310 ms. (128 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3647 resets) in 268 ms. (148 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3645 resets) in 279 ms. (142 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3704 resets) in 337 ms. (118 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3658 resets) in 297 ms. (134 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3636 resets) in 344 ms. (115 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40000 steps (3649 resets) in 352 ms. (113 steps per ms) remains 124/124 properties
BEST_FIRST walk for 40002 steps (3626 resets) in 353 ms. (113 steps per ms) remains 124/124 properties
Probably explored full state space saw : 681098 states, properties seen :0
Probabilistic random walk after 1362238 steps, saw 681098 distinct states, run finished after 24295 ms. (steps per millisecond=56 ) properties seen :0
Interrupted probabilistic random walk after 2771072 steps, run timeout after 51001 ms. (steps per millisecond=54 ) properties seen :0 out of 124
Exhaustive walk after 2771072 steps, saw 1385610 distinct states, run finished after 51001 ms. (steps per millisecond=54 ) properties seen :0
[2026-05-24 14:16:21] [INFO ] Invariant cache hit.
[2026-05-24 14:16:21] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 105.0 s and query timeout 10500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/171 variables, 28/28 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/171 variables, 0/28 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 2 (OVERLAPS) 51/222 variables, 5/33 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/222 variables, 0/33 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 4 (OVERLAPS) 20/242 variables, 8/41 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/242 variables, 0/41 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 6 (OVERLAPS) 245/487 variables, 242/283 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/487 variables, 26/309 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/487 variables, 0/309 constraints. Problems are: Problem set: 0 solved, 124 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (OVERLAPS) 10/497 variables, 9/318 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/497 variables, 2/320 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/497 variables, 0/320 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 12 (OVERLAPS) 1/498 variables, 1/321 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/498 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 14 (OVERLAPS) 0/498 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 124 unsolved
No progress, stopping.
After SMT solving in domain Real declared 498/498 variables, and 321 constraints, problems are : Problem set: 0 solved, 124 unsolved in 27356 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 124/124 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 124 unsolved
Starting Z3 with timeout 105.0 s and query timeout 10500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/171 variables, 28/28 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/171 variables, 0/28 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 2 (OVERLAPS) 51/222 variables, 5/33 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/222 variables, 0/33 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 4 (OVERLAPS) 20/242 variables, 8/41 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/242 variables, 0/41 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 6 (OVERLAPS) 245/487 variables, 242/283 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/487 variables, 26/309 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/487 variables, 120/429 constraints. Problems are: Problem set: 0 solved, 124 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:17:04] [INFO ] Deduced a trap along path composed of 4 places in 29 ms of which 3 ms to minimize.
At refinement iteration 9 (INCLUDED_ONLY) 0/487 variables, 1/430 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/487 variables, 0/430 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 11 (OVERLAPS) 10/497 variables, 9/439 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/497 variables, 2/441 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/497 variables, 4/445 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/497 variables, 0/445 constraints. Problems are: Problem set: 0 solved, 124 unsolved
At refinement iteration 15 (OVERLAPS) 1/498 variables, 1/446 constraints. Problems are: Problem set: 0 solved, 124 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:17:58] [INFO ] Deduced a trap composed of 10 places in 46 ms of which 4 ms to minimize.
At refinement iteration 16 (INCLUDED_ONLY) 0/498 variables, 1/447 constraints. Problems are: Problem set: 0 solved, 124 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:18:09] [INFO ] Deduced a trap composed of 16 places in 56 ms of which 5 ms to minimize.
At refinement iteration 17 (INCLUDED_ONLY) 0/498 variables, 1/448 constraints. Problems are: Problem set: 0 solved, 124 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:18:29] [INFO ] Deduced a trap composed of 12 places in 70 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:18:29] [INFO ] Deduced a trap composed of 13 places in 74 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:18:29] [INFO ] Deduced a trap composed of 19 places in 79 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:18:29] [INFO ] Deduced a trap composed of 19 places in 63 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:18:30] [INFO ] Deduced a trap composed of 24 places in 56 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:18:30] [INFO ] Deduced a trap composed of 24 places in 55 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:18:30] [INFO ] Deduced a trap composed of 32 places in 51 ms of which 3 ms to minimize.
Error getting values : (error "Error writing to Z3 solver: java.io.IOException: Broken pipe")
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 498/498 variables, and 455 constraints, problems are : Problem set: 0 solved, 124 unsolved in 105020 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 124/124 constraints, Known Traps: 9/9 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 132391ms problems are : Problem set: 0 solved, 124 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 171 out of 252 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 252/252 places, 246/246 transitions.
Applied a total of 0 rules in 13 ms. Remains 252 /252 variables (removed 0) and now considering 246/246 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 18 ms. Remains : 252/252 places, 246/246 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 252/252 places, 246/246 transitions.
Applied a total of 0 rules in 5 ms. Remains 252 /252 variables (removed 0) and now considering 246/246 (removed 0) transitions.
[2026-05-24 14:18:34] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:18:34] [INFO ] Implicit Places using invariants in 71 ms returned []
[2026-05-24 14:18:34] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:18:34] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-24 14:18:35] [INFO ] Implicit Places using invariants and state equation in 711 ms returned []
Implicit Place search using SMT with State Equation took 785 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-24 14:18:35] [INFO ] Redundant transitions in 3 ms returned []
Running 245 sub problems to find dead transitions.
[2026-05-24 14:18:35] [INFO ] Invariant cache hit.
[2026-05-24 14:18:35] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/251 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/251 variables, 41/43 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/251 variables, 0/43 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 3 (OVERLAPS) 246/497 variables, 251/294 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/497 variables, 26/320 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/497 variables, 0/320 constraints. Problems are: Problem set: 0 solved, 245 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 1/498 variables, 1/321 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/498 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 8 (OVERLAPS) 0/498 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 245 unsolved
No progress, stopping.
After SMT solving in domain Real declared 498/498 variables, and 321 constraints, problems are : Problem set: 0 solved, 245 unsolved in 30022 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 245/245 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 245 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/251 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/251 variables, 41/43 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/251 variables, 0/43 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 3 (OVERLAPS) 246/497 variables, 251/294 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/497 variables, 26/320 constraints. Problems are: Problem set: 0 solved, 245 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/497 variables, 245/565 constraints. Problems are: Problem set: 0 solved, 245 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 497/498 variables, and 565 constraints, problems are : Problem set: 0 solved, 245 unsolved in 30015 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 251/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 245/245 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 60063ms problems are : Problem set: 0 solved, 245 unsolved
Search for dead transitions found 0 dead transitions in 60064ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 60874 ms. Remains : 252/252 places, 246/246 transitions.
RANDOM walk for 400000 steps (57850 resets) in 4820 ms. (82 steps per ms) remains 171/171 properties
Running SMT prover for 171 properties.
[2026-05-24 14:19:37] [INFO ] Invariant cache hit.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-24 14:19:37] [INFO ] [Real]Absence check using 2 positive place invariants in 0 ms returned sat
[2026-05-24 14:19:37] [INFO ] [Real]Absence check using 2 positive and 41 generalized place invariants in 9 ms returned sat
[2026-05-24 14:19:37] [INFO ] After 697ms SMT Verify possible using state equation in real domain returned unsat :0 sat :171
[2026-05-24 14:19:37] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-24 14:19:39] [INFO ] After 1076ms SMT Verify possible using 26 Read/Feed constraints in real domain returned unsat :0 sat :171
TRAPS : Iteration 0
[2026-05-24 14:19:43] [INFO ] After 5521ms SMT Verify possible using trap constraints in real domain returned unsat :0 sat :0 real:171
[2026-05-24 14:19:43] [INFO ] After 6355ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:171
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-24 14:19:43] [INFO ] [Nat]Absence check using 2 positive place invariants in 1 ms returned sat
[2026-05-24 14:19:43] [INFO ] [Nat]Absence check using 2 positive and 41 generalized place invariants in 9 ms returned sat
[2026-05-24 14:19:44] [INFO ] After 673ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :171
[2026-05-24 14:19:46] [INFO ] After 1893ms SMT Verify possible using 26 Read/Feed constraints in natural domain returned unsat :0 sat :171
TRAPS : Iteration 0
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:46] [INFO ] Deduced a trap composed of 10 places in 73 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:46] [INFO ] Deduced a trap composed of 13 places in 74 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:46] [INFO ] Deduced a trap composed of 12 places in 63 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:46] [INFO ] Deduced a trap composed of 16 places in 64 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:46] [INFO ] Deduced a trap composed of 19 places in 60 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:46] [INFO ] Deduced a trap composed of 19 places in 59 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:46] [INFO ] Deduced a trap composed of 23 places in 65 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:46] [INFO ] Deduced a trap composed of 24 places in 59 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:47] [INFO ] Deduced a trap composed of 21 places in 61 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:47] [INFO ] Deduced a trap composed of 24 places in 55 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:47] [INFO ] Deduced a trap composed of 9 places in 56 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:47] [INFO ] Deduced a trap composed of 4 places in 71 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:47] [INFO ] Deduced a trap composed of 5 places in 70 ms of which 4 ms to minimize.
[2026-05-24 14:19:47] [INFO ] Trap strengthening (SAT) tested/added 14/13 trap constraints in 1269 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:47] [INFO ] Deduced a trap composed of 15 places in 58 ms of which 4 ms to minimize.
[2026-05-24 14:19:47] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 84 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:47] [INFO ] Deduced a trap composed of 21 places in 62 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:47] [INFO ] Deduced a trap composed of 28 places in 57 ms of which 5 ms to minimize.
[2026-05-24 14:19:47] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 174 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:48] [INFO ] Deduced a trap composed of 24 places in 53 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:48] [INFO ] Deduced a trap composed of 26 places in 58 ms of which 5 ms to minimize.
[2026-05-24 14:19:48] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 161 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:48] [INFO ] Deduced a trap composed of 28 places in 51 ms of which 3 ms to minimize.
[2026-05-24 14:19:48] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 74 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:49] [INFO ] Deduced a trap composed of 28 places in 58 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:49] [INFO ] Deduced a trap composed of 32 places in 48 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:49] [INFO ] Deduced a trap composed of 32 places in 46 ms of which 3 ms to minimize.
[2026-05-24 14:19:49] [INFO ] Trap strengthening (SAT) tested/added 4/3 trap constraints in 214 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:49] [INFO ] Deduced a trap composed of 30 places in 52 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:49] [INFO ] Deduced a trap composed of 36 places in 46 ms of which 4 ms to minimize.
[2026-05-24 14:19:49] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 144 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:50] [INFO ] Deduced a trap composed of 32 places in 52 ms of which 2 ms to minimize.
[2026-05-24 14:19:50] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 77 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:50] [INFO ] Deduced a trap composed of 40 places in 39 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:50] [INFO ] Deduced a trap composed of 40 places in 35 ms of which 2 ms to minimize.
[2026-05-24 14:19:50] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 114 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:50] [INFO ] Deduced a trap composed of 20 places in 61 ms of which 4 ms to minimize.
[2026-05-24 14:19:50] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 83 ms
TRAPS : Iteration 1
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:54] [INFO ] Deduced a trap composed of 34 places in 50 ms of which 4 ms to minimize.
[2026-05-24 14:19:54] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 78 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:55] [INFO ] Deduced a trap composed of 36 places in 48 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:55] [INFO ] Deduced a trap composed of 38 places in 49 ms of which 4 ms to minimize.
[2026-05-24 14:19:55] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 141 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:55] [INFO ] Deduced a trap composed of 8 places in 67 ms of which 5 ms to minimize.
[2026-05-24 14:19:55] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 93 ms
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:19:55] [INFO ] Deduced a trap composed of 9 places in 64 ms of which 5 ms to minimize.
[2026-05-24 14:19:55] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 98 ms
TRAPS : Iteration 2
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:00] [INFO ] Deduced a trap composed of 14 places in 65 ms of which 4 ms to minimize.
[2026-05-24 14:20:00] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 95 ms
TRAPS : Iteration 3
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:10] [INFO ] Deduced a trap composed of 35 places in 41 ms of which 2 ms to minimize.
[2026-05-24 14:20:10] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 75 ms
TRAPS : Iteration 4
[2026-05-24 14:20:16] [INFO ] After 32538ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :171
[2026-05-24 14:20:17] [INFO ] After 34369ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :171
RANDOM walk for 40000 steps (5778 resets) in 88 ms. (449 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (3604 resets) in 101 ms. (392 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 777726 steps, run timeout after 3001 ms. (steps per millisecond=259 ) properties seen :0 out of 1
Probabilistic random walk after 777726 steps, saw 388951 distinct states, run finished after 3001 ms. (steps per millisecond=259 ) properties seen :0
[2026-05-24 14:20:20] [INFO ] Invariant cache hit.
[2026-05-24 14:20:20] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 55/56 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/56 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 56/112 variables, 12/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/112 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 35/147 variables, 10/25 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/147 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 43/190 variables, 5/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/190 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 28/218 variables, 9/39 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/218 variables, 0/39 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 236/454 variables, 218/257 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (INCLUDED_ONLY) 0/454 variables, 24/281 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/454 variables, 0/281 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 37/491 variables, 28/309 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/491 variables, 2/311 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/491 variables, 1/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/491 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 2/493 variables, 2/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/493 variables, 2/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/493 variables, 0/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 5/498 variables, 4/320 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/498 variables, 1/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (INCLUDED_ONLY) 0/498 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (OVERLAPS) 0/498 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 498/498 variables, and 321 constraints, problems are : Problem set: 0 solved, 1 unsolved in 322 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 55/56 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/56 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 56/112 variables, 12/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:21] [INFO ] Deduced a trap composed of 3 places in 44 ms of which 2 ms to minimize.
At refinement iteration 4 (INCLUDED_ONLY) 0/112 variables, 1/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/112 variables, 0/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 35/147 variables, 10/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/147 variables, 0/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 43/190 variables, 5/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/190 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 28/218 variables, 9/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/218 variables, 0/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 236/454 variables, 218/258 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/454 variables, 24/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:21] [INFO ] Deduced a trap along path composed of 5 places in 20 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:21] [INFO ] Deduced a trap along path composed of 2 places in 19 ms of which 0 ms to minimize.
At refinement iteration 14 (INCLUDED_ONLY) 0/454 variables, 2/284 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/454 variables, 0/284 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 37/491 variables, 28/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/491 variables, 2/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/491 variables, 1/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/491 variables, 1/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/491 variables, 0/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 2/493 variables, 2/318 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/493 variables, 2/320 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (INCLUDED_ONLY) 0/493 variables, 0/320 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (OVERLAPS) 5/498 variables, 4/324 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 25 (INCLUDED_ONLY) 0/498 variables, 1/325 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 26 (INCLUDED_ONLY) 0/498 variables, 0/325 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 27 (OVERLAPS) 0/498 variables, 0/325 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 498/498 variables, and 325 constraints, problems are : Problem set: 0 solved, 1 unsolved in 610 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 936ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 52 ms.
Support contains 1 out of 252 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 252/252 places, 246/246 transitions.
Graph (complete) has 834 edges and 252 vertex of which 251 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.4 ms
Discarding 1 places :
Also discarding 0 output 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 2 place count 251 transition count 245
Free-agglomeration rule (complex) applied 25 times.
Iterating global reduction 1 with 25 rules applied. Total rules applied 27 place count 251 transition count 220
Reduce places removed 25 places and 0 transitions.
Iterating post reduction 1 with 25 rules applied. Total rules applied 52 place count 226 transition count 220
Partial Free-agglomeration rule applied 26 times.
Drop transitions (Partial Free agglomeration) removed 26 transitions
Iterating global reduction 2 with 26 rules applied. Total rules applied 78 place count 226 transition count 220
Applied a total of 78 rules in 41 ms. Remains 226 /252 variables (removed 26) and now considering 220/246 (removed 26) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 41 ms. Remains : 226/252 places, 220/246 transitions.
RANDOM walk for 40000 steps (5806 resets) in 137 ms. (289 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40000 steps (3714 resets) in 77 ms. (512 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 775943 steps, run timeout after 3001 ms. (steps per millisecond=258 ) properties seen :0 out of 1
Probabilistic random walk after 775943 steps, saw 388054 distinct states, run finished after 3001 ms. (steps per millisecond=258 ) properties seen :0
// Phase 1: matrix 220 rows 226 cols
[2026-05-24 14:20:24] [INFO ] Computed 43 invariants in 17 ms
[2026-05-24 14:20:25] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 40/41 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/41 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 130/171 variables, 23/24 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/171 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 50/221 variables, 17/41 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:25] [INFO ] Deduced a trap composed of 4 places in 106 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:25] [INFO ] Deduced a trap composed of 7 places in 111 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:25] [INFO ] Deduced a trap composed of 7 places in 108 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:25] [INFO ] Deduced a trap composed of 10 places in 87 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:25] [INFO ] Deduced a trap composed of 13 places in 69 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:25] [INFO ] Deduced a trap composed of 15 places in 73 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:25] [INFO ] Deduced a trap composed of 17 places in 69 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:25] [INFO ] Deduced a trap composed of 18 places in 69 ms of which 6 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/221 variables, 8/49 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/221 variables, 0/49 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 220/441 variables, 221/270 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (INCLUDED_ONLY) 0/441 variables, 38/308 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/441 variables, 0/308 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 5/446 variables, 5/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/446 variables, 2/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/446 variables, 0/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 0/446 variables, 0/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 446/446 variables, and 315 constraints, problems are : Problem set: 0 solved, 1 unsolved in 1006 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, Generalized P Invariants (flows): 40/40 constraints, State Equation: 226/226 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 8/8 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 40/41 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/41 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 130/171 variables, 23/24 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/171 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 50/221 variables, 17/41 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/221 variables, 8/49 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:26] [INFO ] Deduced a trap composed of 3 places in 83 ms of which 5 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/221 variables, 1/50 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/221 variables, 0/50 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 220/441 variables, 221/271 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/441 variables, 38/309 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/441 variables, 1/310 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/441 variables, 0/310 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 5/446 variables, 5/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/446 variables, 2/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/446 variables, 0/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 0/446 variables, 0/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 446/446 variables, and 317 constraints, problems are : Problem set: 0 solved, 1 unsolved in 417 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, Generalized P Invariants (flows): 40/40 constraints, State Equation: 226/226 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 9/9 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 1462ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 46 ms.
Support contains 1 out of 226 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 226/226 places, 220/220 transitions.
Applied a total of 0 rules in 7 ms. Remains 226 /226 variables (removed 0) and now considering 220/220 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 7 ms. Remains : 226/226 places, 220/220 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 226/226 places, 220/220 transitions.
Applied a total of 0 rules in 12 ms. Remains 226 /226 variables (removed 0) and now considering 220/220 (removed 0) transitions.
[2026-05-24 14:20:26] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:20:27] [INFO ] Implicit Places using invariants in 805 ms returned [44, 49, 71, 76, 96, 102, 123, 128, 148, 153, 174, 180]
[2026-05-24 14:20:27] [INFO ] Actually due to overlaps returned [49, 44]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 810 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 224/226 places, 220/220 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 224 transition count 219
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 223 transition count 219
Applied a total of 2 rules in 25 ms. Remains 223 /224 variables (removed 1) and now considering 219/220 (removed 1) transitions.
// Phase 1: matrix 219 rows 223 cols
[2026-05-24 14:20:27] [INFO ] Computed 41 invariants in 9 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:20:27] [INFO ] Implicit Places using invariants in 479 ms returned [68, 73, 93, 99, 120, 125, 145, 150, 171, 177]
[2026-05-24 14:20:27] [INFO ] Actually due to overlaps returned [73, 68]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 483 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 2 : 221/226 places, 219/220 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 221 transition count 218
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 220 transition count 218
Applied a total of 2 rules in 17 ms. Remains 220 /221 variables (removed 1) and now considering 218/219 (removed 1) transitions.
// Phase 1: matrix 218 rows 220 cols
[2026-05-24 14:20:27] [INFO ] Computed 39 invariants in 16 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:20:28] [INFO ] Implicit Places using invariants in 436 ms returned [90, 96, 117, 122, 142, 147, 168, 174]
[2026-05-24 14:20:28] [INFO ] Actually due to overlaps returned [96, 90]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 452 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 3 : 218/226 places, 218/220 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 218 transition count 217
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 217 transition count 217
Applied a total of 2 rules in 10 ms. Remains 217 /218 variables (removed 1) and now considering 217/218 (removed 1) transitions.
// Phase 1: matrix 217 rows 217 cols
[2026-05-24 14:20:28] [INFO ] Computed 37 invariants in 22 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:20:28] [INFO ] Implicit Places using invariants in 533 ms returned [114, 119, 139, 144, 165, 171]
[2026-05-24 14:20:28] [INFO ] Actually due to overlaps returned [119, 114]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 541 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 4 : 215/226 places, 217/220 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 215 transition count 216
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 214 transition count 216
Applied a total of 2 rules in 10 ms. Remains 214 /215 variables (removed 1) and now considering 216/217 (removed 1) transitions.
// Phase 1: matrix 216 rows 214 cols
[2026-05-24 14:20:28] [INFO ] Computed 35 invariants in 12 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:20:29] [INFO ] Implicit Places using invariants in 617 ms returned [136, 141, 162, 168]
[2026-05-24 14:20:29] [INFO ] Actually due to overlaps returned [141, 136]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 623 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 5 : 212/226 places, 216/220 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 212 transition count 215
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 211 transition count 215
Applied a total of 2 rules in 10 ms. Remains 211 /212 variables (removed 1) and now considering 215/216 (removed 1) transitions.
// Phase 1: matrix 215 rows 211 cols
[2026-05-24 14:20:29] [INFO ] Computed 33 invariants in 21 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:20:30] [INFO ] Implicit Places using invariants in 512 ms returned [159, 165]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 516 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 6 : 209/226 places, 215/220 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 209 transition count 214
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 208 transition count 214
Applied a total of 2 rules in 12 ms. Remains 208 /209 variables (removed 1) and now considering 214/215 (removed 1) transitions.
// Phase 1: matrix 214 rows 208 cols
[2026-05-24 14:20:30] [INFO ] Computed 31 invariants in 17 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:20:30] [INFO ] Implicit Places using invariants in 337 ms returned []
[2026-05-24 14:20:30] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:20:30] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:20:32] [INFO ] Implicit Places using invariants and state equation in 1794 ms returned []
Implicit Place search using SMT with State Equation took 2146 ms to find 0 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 7 : 208/226 places, 214/220 transitions.
Finished structural reductions in REACHABILITY mode , in 7 iterations and 5677 ms. Remains : 208/226 places, 214/220 transitions.
RANDOM walk for 40000 steps (5808 resets) in 99 ms. (400 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40001 steps (3678 resets) in 75 ms. (526 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 768326 steps, run timeout after 3001 ms. (steps per millisecond=256 ) properties seen :0 out of 1
Probabilistic random walk after 768326 steps, saw 384247 distinct states, run finished after 3003 ms. (steps per millisecond=255 ) properties seen :0
[2026-05-24 14:20:35] [INFO ] Invariant cache hit.
[2026-05-24 14:20:35] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 100/101 variables, 6/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/101 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 48/149 variables, 5/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/149 variables, 0/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 54/203 variables, 18/29 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:35] [INFO ] Deduced a trap composed of 4 places in 94 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:35] [INFO ] Deduced a trap composed of 7 places in 89 ms of which 7 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/203 variables, 2/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/203 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 214/417 variables, 203/234 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (INCLUDED_ONLY) 0/417 variables, 38/272 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/417 variables, 0/272 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 5/422 variables, 5/277 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/422 variables, 2/279 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/422 variables, 0/279 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 0/422 variables, 0/279 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 422/422 variables, and 279 constraints, problems are : Problem set: 0 solved, 1 unsolved in 443 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 208/208 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 2/2 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 100/101 variables, 6/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/101 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 48/149 variables, 5/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/149 variables, 0/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 54/203 variables, 18/29 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/203 variables, 2/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:35] [INFO ] Deduced a trap composed of 7 places in 88 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:35] [INFO ] Deduced a trap composed of 9 places in 114 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:36] [INFO ] Deduced a trap composed of 10 places in 91 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:36] [INFO ] Deduced a trap composed of 10 places in 85 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:36] [INFO ] Deduced a trap composed of 13 places in 87 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:36] [INFO ] Deduced a trap composed of 13 places in 89 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:36] [INFO ] Deduced a trap composed of 16 places in 88 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:36] [INFO ] Deduced a trap composed of 51 places in 90 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:36] [INFO ] Deduced a trap composed of 16 places in 93 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:20:36] [INFO ] Deduced a trap composed of 51 places in 95 ms of which 19 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/203 variables, 10/41 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/203 variables, 0/41 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 214/417 variables, 203/244 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/417 variables, 38/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/417 variables, 1/283 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/417 variables, 0/283 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 5/422 variables, 5/288 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/422 variables, 2/290 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/422 variables, 0/290 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 0/422 variables, 0/290 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 422/422 variables, and 290 constraints, problems are : Problem set: 0 solved, 1 unsolved in 1361 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 208/208 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 12/12 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 1812ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 42 ms.
Support contains 1 out of 208 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 208/208 places, 214/214 transitions.
Applied a total of 0 rules in 3 ms. Remains 208 /208 variables (removed 0) and now considering 214/214 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 208/208 places, 214/214 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 208/208 places, 214/214 transitions.
Applied a total of 0 rules in 9 ms. Remains 208 /208 variables (removed 0) and now considering 214/214 (removed 0) transitions.
[2026-05-24 14:20:37] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:20:37] [INFO ] Implicit Places using invariants in 282 ms returned []
[2026-05-24 14:20:37] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:20:37] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:20:39] [INFO ] Implicit Places using invariants and state equation in 1770 ms returned []
Implicit Place search using SMT with State Equation took 2055 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-24 14:20:39] [INFO ] Redundant transitions in 4 ms returned []
Running 213 sub problems to find dead transitions.
[2026-05-24 14:20:39] [INFO ] Invariant cache hit.
[2026-05-24 14:20:39] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/207 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/207 variables, 18/20 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/207 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 3 (OVERLAPS) 1/208 variables, 11/31 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/208 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 5 (OVERLAPS) 214/422 variables, 208/239 constraints. Problems are: Problem set: 0 solved, 213 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/422 variables, 38/277 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/422 variables, 0/277 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 8 (OVERLAPS) 0/422 variables, 0/277 constraints. Problems are: Problem set: 0 solved, 213 unsolved
No progress, stopping.
After SMT solving in domain Real declared 422/422 variables, and 277 constraints, problems are : Problem set: 0 solved, 213 unsolved in 13431 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 208/208 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 213/213 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 213 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/207 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/207 variables, 18/20 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/207 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 3 (OVERLAPS) 1/208 variables, 11/31 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/208 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 5 (OVERLAPS) 214/422 variables, 208/239 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/422 variables, 38/277 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/422 variables, 213/490 constraints. Problems are: Problem set: 0 solved, 213 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:04] [INFO ] Deduced a trap composed of 4 places in 64 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:06] [INFO ] Deduced a trap composed of 78 places in 81 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:07] [INFO ] Deduced a trap composed of 75 places in 90 ms of which 18 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:07] [INFO ] Deduced a trap composed of 75 places in 84 ms of which 15 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:08] [INFO ] Deduced a trap composed of 3 places in 84 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:09] [INFO ] Deduced a trap composed of 9 places in 95 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:11] [INFO ] Deduced a trap composed of 12 places in 90 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:11] [INFO ] Deduced a trap composed of 13 places in 98 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:11] [INFO ] Deduced a trap composed of 15 places in 100 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:12] [INFO ] Deduced a trap composed of 20 places in 104 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:12] [INFO ] Deduced a trap composed of 21 places in 105 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:12] [INFO ] Deduced a trap composed of 23 places in 103 ms of which 15 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:13] [INFO ] Deduced a trap composed of 58 places in 151 ms of which 62 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:13] [INFO ] Deduced a trap composed of 59 places in 153 ms of which 60 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:13] [INFO ] Deduced a trap composed of 60 places in 111 ms of which 23 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:14] [INFO ] Deduced a trap composed of 61 places in 133 ms of which 49 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:14] [INFO ] Deduced a trap composed of 63 places in 109 ms of which 22 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:14] [INFO ] Deduced a trap composed of 63 places in 121 ms of which 35 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:14] [INFO ] Deduced a trap composed of 63 places in 132 ms of which 37 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:15] [INFO ] Deduced a trap composed of 63 places in 117 ms of which 29 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/422 variables, 20/510 constraints. Problems are: Problem set: 0 solved, 213 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:20] [INFO ] Deduced a trap composed of 23 places in 48 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:21] [INFO ] Deduced a trap composed of 55 places in 94 ms of which 23 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:21] [INFO ] Deduced a trap composed of 58 places in 107 ms of which 24 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 422/422 variables, and 513 constraints, problems are : Problem set: 0 solved, 213 unsolved in 30014 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 208/208 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 213/213 constraints, Known Traps: 23/23 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 43509ms problems are : Problem set: 0 solved, 213 unsolved
Search for dead transitions found 0 dead transitions in 43513ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 45591 ms. Remains : 208/208 places, 214/214 transitions.
Attempting over-approximation, by ignoring read arcs.
Performed 18 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 0 with 18 Pre rules applied. Total rules applied 0 place count 208 transition count 196
Deduced a syphon composed of 18 places in 0 ms
Reduce places removed 18 places and 0 transitions.
Iterating global reduction 0 with 36 rules applied. Total rules applied 36 place count 190 transition count 196
Discarding 9 places :
Symmetric choice reduction at 0 with 9 rule applications. Total rules 45 place count 181 transition count 187
Iterating global reduction 0 with 9 rules applied. Total rules applied 54 place count 181 transition count 187
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 0 with 2 rules applied. Total rules applied 56 place count 180 transition count 186
Free-agglomeration rule (complex) applied 2 times.
Iterating global reduction 0 with 2 rules applied. Total rules applied 58 place count 180 transition count 184
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 60 place count 178 transition count 184
Applied a total of 60 rules in 29 ms. Remains 178 /208 variables (removed 30) and now considering 184/214 (removed 30) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 184 rows 178 cols
[2026-05-24 14:21:22] [INFO ] Computed 31 invariants in 14 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-24 14:21:22] [INFO ] [Real]Absence check using 13 positive place invariants in 8 ms returned sat
[2026-05-24 14:21:22] [INFO ] [Real]Absence check using 13 positive and 18 generalized place invariants in 3 ms returned sat
[2026-05-24 14:21:22] [INFO ] After 61ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-24 14:21:22] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-24 14:21:22] [INFO ] After 7ms SMT Verify possible using 1 Read/Feed constraints in real domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-24 14:21:22] [INFO ] After 31ms SMT Verify possible using trap constraints in real domain returned unsat :0 sat :1
[2026-05-24 14:21:22] [INFO ] After 148ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :1
Over-approximation ignoring read arcs solved 0 properties in 196 ms.
RANDOM walk for 40000 steps (5756 resets) in 76 ms. (519 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (3678 resets) in 71 ms. (555 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 761316 steps, run timeout after 3001 ms. (steps per millisecond=253 ) properties seen :0 out of 1
Probabilistic random walk after 761316 steps, saw 380744 distinct states, run finished after 3001 ms. (steps per millisecond=253 ) properties seen :0
// Phase 1: matrix 246 rows 252 cols
[2026-05-24 14:21:25] [INFO ] Computed 43 invariants in 15 ms
[2026-05-24 14:21:25] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 55/56 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/56 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 56/112 variables, 12/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/112 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 35/147 variables, 10/25 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/147 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 43/190 variables, 5/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/190 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 28/218 variables, 9/39 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/218 variables, 0/39 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 236/454 variables, 218/257 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (INCLUDED_ONLY) 0/454 variables, 24/281 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/454 variables, 0/281 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 37/491 variables, 28/309 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/491 variables, 2/311 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/491 variables, 1/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/491 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 2/493 variables, 2/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/493 variables, 2/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/493 variables, 0/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 5/498 variables, 4/320 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/498 variables, 1/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (INCLUDED_ONLY) 0/498 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (OVERLAPS) 0/498 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 498/498 variables, and 321 constraints, problems are : Problem set: 0 solved, 1 unsolved in 558 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 55/56 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/56 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 56/112 variables, 12/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/112 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 35/147 variables, 10/25 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/147 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 43/190 variables, 5/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/190 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 28/218 variables, 9/39 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/218 variables, 0/39 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 236/454 variables, 218/257 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/454 variables, 24/281 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:26] [INFO ] Deduced a trap along path composed of 2 places in 22 ms of which 1 ms to minimize.
At refinement iteration 13 (INCLUDED_ONLY) 0/454 variables, 1/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/454 variables, 0/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 37/491 variables, 28/310 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/491 variables, 2/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/491 variables, 1/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/491 variables, 1/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/491 variables, 0/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 2/493 variables, 2/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/493 variables, 2/318 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/493 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (OVERLAPS) 5/498 variables, 4/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (INCLUDED_ONLY) 0/498 variables, 1/323 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:26] [INFO ] Deduced a trap composed of 8 places in 99 ms of which 6 ms to minimize.
At refinement iteration 25 (INCLUDED_ONLY) 0/498 variables, 1/324 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 26 (INCLUDED_ONLY) 0/498 variables, 0/324 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 27 (OVERLAPS) 0/498 variables, 0/324 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 498/498 variables, and 324 constraints, problems are : Problem set: 0 solved, 1 unsolved in 475 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 1061ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 55 ms.
Support contains 1 out of 252 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 252/252 places, 246/246 transitions.
Graph (complete) has 834 edges and 252 vertex of which 251 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.0 ms
Discarding 1 places :
Also discarding 0 output 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 2 place count 251 transition count 245
Free-agglomeration rule (complex) applied 24 times.
Iterating global reduction 1 with 24 rules applied. Total rules applied 26 place count 251 transition count 221
Reduce places removed 24 places and 0 transitions.
Iterating post reduction 1 with 24 rules applied. Total rules applied 50 place count 227 transition count 221
Partial Free-agglomeration rule applied 26 times.
Drop transitions (Partial Free agglomeration) removed 26 transitions
Iterating global reduction 2 with 26 rules applied. Total rules applied 76 place count 227 transition count 221
Applied a total of 76 rules in 17 ms. Remains 227 /252 variables (removed 25) and now considering 221/246 (removed 25) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 17 ms. Remains : 227/252 places, 221/246 transitions.
RANDOM walk for 40000 steps (5679 resets) in 76 ms. (519 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40001 steps (3667 resets) in 72 ms. (547 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 804552 steps, run timeout after 3001 ms. (steps per millisecond=268 ) properties seen :0 out of 1
Probabilistic random walk after 804552 steps, saw 402370 distinct states, run finished after 3001 ms. (steps per millisecond=268 ) properties seen :0
// Phase 1: matrix 221 rows 227 cols
[2026-05-24 14:21:30] [INFO ] Computed 43 invariants in 17 ms
[2026-05-24 14:21:30] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 123/124 variables, 6/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:30] [INFO ] Deduced a trap composed of 3 places in 54 ms of which 3 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/124 variables, 1/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/124 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 4/128 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/128 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 92/220 variables, 33/41 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:30] [INFO ] Deduced a trap composed of 4 places in 81 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:30] [INFO ] Deduced a trap composed of 7 places in 87 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:30] [INFO ] Deduced a trap composed of 7 places in 94 ms of which 7 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/220 variables, 3/44 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/220 variables, 0/44 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 2/222 variables, 1/45 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/222 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 221/443 variables, 222/267 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/443 variables, 38/305 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/443 variables, 0/305 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 5/448 variables, 5/310 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 15 (INCLUDED_ONLY) 0/448 variables, 2/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/448 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 0/448 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 448/448 variables, and 312 constraints, problems are : Problem set: 0 solved, 1 unsolved in 578 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, Generalized P Invariants (flows): 40/40 constraints, State Equation: 227/227 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 4/4 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 123/124 variables, 6/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/124 variables, 1/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/124 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 4/128 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/128 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 92/220 variables, 33/41 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/220 variables, 3/44 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/220 variables, 0/44 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 2/222 variables, 1/45 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/222 variables, 0/45 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 221/443 variables, 222/267 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/443 variables, 38/305 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/443 variables, 1/306 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/443 variables, 0/306 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 5/448 variables, 5/311 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/448 variables, 2/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/448 variables, 0/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 0/448 variables, 0/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 448/448 variables, and 313 constraints, problems are : Problem set: 0 solved, 1 unsolved in 299 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, Generalized P Invariants (flows): 40/40 constraints, State Equation: 227/227 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 4/4 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 905ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 41 ms.
Support contains 1 out of 227 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 227/227 places, 221/221 transitions.
Applied a total of 0 rules in 4 ms. Remains 227 /227 variables (removed 0) and now considering 221/221 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 227/227 places, 221/221 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 227/227 places, 221/221 transitions.
Applied a total of 0 rules in 4 ms. Remains 227 /227 variables (removed 0) and now considering 221/221 (removed 0) transitions.
[2026-05-24 14:21:31] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:21:31] [INFO ] Implicit Places using invariants in 413 ms returned [43, 71, 76, 97, 103, 124, 129, 149, 154, 175, 181]
[2026-05-24 14:21:31] [INFO ] Actually due to overlaps returned [76, 43, 71]
Discarding 3 places :
Implicit Place search using SMT only with invariants took 416 ms to find 3 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 224/227 places, 221/221 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 224 transition count 220
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 223 transition count 220
Partial Free-agglomeration rule applied 1 times.
Drop transitions (Partial Free agglomeration) removed 1 transitions
Iterating global reduction 1 with 1 rules applied. Total rules applied 3 place count 223 transition count 220
Applied a total of 3 rules in 15 ms. Remains 223 /224 variables (removed 1) and now considering 220/221 (removed 1) transitions.
// Phase 1: matrix 220 rows 223 cols
[2026-05-24 14:21:31] [INFO ] Computed 40 invariants in 13 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:21:31] [INFO ] Implicit Places using invariants in 396 ms returned [93, 99, 120, 125, 145, 150, 171, 177]
[2026-05-24 14:21:31] [INFO ] Actually due to overlaps returned [99, 93]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 398 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 2 : 221/227 places, 220/221 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 221 transition count 219
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 220 transition count 219
Applied a total of 2 rules in 22 ms. Remains 220 /221 variables (removed 1) and now considering 219/220 (removed 1) transitions.
// Phase 1: matrix 219 rows 220 cols
[2026-05-24 14:21:31] [INFO ] Computed 38 invariants in 22 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:21:32] [INFO ] Implicit Places using invariants in 336 ms returned [117, 122, 142, 147, 168, 174]
[2026-05-24 14:21:32] [INFO ] Actually due to overlaps returned [122, 117]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 339 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 3 : 218/227 places, 219/221 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 218 transition count 218
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 217 transition count 218
Applied a total of 2 rules in 12 ms. Remains 217 /218 variables (removed 1) and now considering 218/219 (removed 1) transitions.
// Phase 1: matrix 218 rows 217 cols
[2026-05-24 14:21:32] [INFO ] Computed 36 invariants in 16 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:21:32] [INFO ] Implicit Places using invariants in 312 ms returned [139, 144, 165, 171]
[2026-05-24 14:21:32] [INFO ] Actually due to overlaps returned [144, 139]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 315 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 4 : 215/227 places, 218/221 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 215 transition count 217
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 214 transition count 217
Applied a total of 2 rules in 16 ms. Remains 214 /215 variables (removed 1) and now considering 217/218 (removed 1) transitions.
// Phase 1: matrix 217 rows 214 cols
[2026-05-24 14:21:32] [INFO ] Computed 34 invariants in 19 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:21:32] [INFO ] Implicit Places using invariants in 331 ms returned [162, 168]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 333 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 5 : 212/227 places, 217/221 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 212 transition count 216
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 211 transition count 216
Applied a total of 2 rules in 16 ms. Remains 211 /212 variables (removed 1) and now considering 216/217 (removed 1) transitions.
// Phase 1: matrix 216 rows 211 cols
[2026-05-24 14:21:32] [INFO ] Computed 32 invariants in 15 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:21:33] [INFO ] Implicit Places using invariants in 265 ms returned []
[2026-05-24 14:21:33] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:21:33] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:21:35] [INFO ] Implicit Places using invariants and state equation in 2217 ms returned []
Implicit Place search using SMT with State Equation took 2484 ms to find 0 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 6 : 211/227 places, 216/221 transitions.
Finished structural reductions in REACHABILITY mode , in 6 iterations and 4376 ms. Remains : 211/227 places, 216/221 transitions.
RANDOM walk for 40000 steps (5749 resets) in 104 ms. (380 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40001 steps (3658 resets) in 67 ms. (588 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 787328 steps, run timeout after 3001 ms. (steps per millisecond=262 ) properties seen :0 out of 1
Probabilistic random walk after 787328 steps, saw 393740 distinct states, run finished after 3002 ms. (steps per millisecond=262 ) properties seen :0
[2026-05-24 14:21:38] [INFO ] Invariant cache hit.
[2026-05-24 14:21:38] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 129/130 variables, 6/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:38] [INFO ] Deduced a trap composed of 3 places in 59 ms of which 3 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/130 variables, 1/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/130 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 22/152 variables, 6/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/152 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 54/206 variables, 18/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:38] [INFO ] Deduced a trap composed of 4 places in 86 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:38] [INFO ] Deduced a trap composed of 6 places in 86 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:38] [INFO ] Deduced a trap composed of 7 places in 83 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:39] [INFO ] Deduced a trap composed of 7 places in 78 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:39] [INFO ] Deduced a trap composed of 10 places in 81 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:39] [INFO ] Deduced a trap composed of 10 places in 80 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:39] [INFO ] Deduced a trap composed of 13 places in 75 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:39] [INFO ] Deduced a trap composed of 13 places in 56 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:39] [INFO ] Deduced a trap composed of 15 places in 57 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:39] [INFO ] Deduced a trap composed of 16 places in 55 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:39] [INFO ] Deduced a trap composed of 17 places in 50 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:39] [INFO ] Deduced a trap composed of 20 places in 67 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:39] [INFO ] Deduced a trap composed of 20 places in 48 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:39] [INFO ] Deduced a trap composed of 23 places in 46 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:39] [INFO ] Deduced a trap composed of 23 places in 43 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:39] [INFO ] Deduced a trap composed of 25 places in 42 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:39] [INFO ] Deduced a trap composed of 26 places in 44 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:39] [INFO ] Deduced a trap composed of 26 places in 40 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:39] [INFO ] Deduced a trap composed of 29 places in 39 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:40] [INFO ] Deduced a trap composed of 29 places in 35 ms of which 3 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/206 variables, 20/51 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:21:40] [INFO ] Deduced a trap composed of 30 places in 29 ms of which 1 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/206 variables, 1/52 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/206 variables, 0/52 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 216/422 variables, 206/258 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/422 variables, 38/296 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/422 variables, 0/296 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 5/427 variables, 5/301 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/427 variables, 2/303 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/427 variables, 0/303 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 0/427 variables, 0/303 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 427/427 variables, and 303 constraints, problems are : Problem set: 0 solved, 1 unsolved in 1857 ms.
Refiners :[Positive P Invariants (semi-flows): 14/14 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 211/211 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 22/22 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 129/130 variables, 6/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/130 variables, 1/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/130 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 22/152 variables, 6/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/152 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 54/206 variables, 18/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/206 variables, 21/52 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/206 variables, 0/52 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 216/422 variables, 206/258 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/422 variables, 38/296 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/422 variables, 1/297 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/422 variables, 0/297 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 5/427 variables, 5/302 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/427 variables, 2/304 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/427 variables, 0/304 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 0/427 variables, 0/304 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 427/427 variables, and 304 constraints, problems are : Problem set: 0 solved, 1 unsolved in 339 ms.
Refiners :[Positive P Invariants (semi-flows): 14/14 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 211/211 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 22/22 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 2204ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 53 ms.
Support contains 1 out of 211 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 211/211 places, 216/216 transitions.
Applied a total of 0 rules in 4 ms. Remains 211 /211 variables (removed 0) and now considering 216/216 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 211/211 places, 216/216 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 211/211 places, 216/216 transitions.
Applied a total of 0 rules in 4 ms. Remains 211 /211 variables (removed 0) and now considering 216/216 (removed 0) transitions.
[2026-05-24 14:21:40] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:21:41] [INFO ] Implicit Places using invariants in 237 ms returned []
[2026-05-24 14:21:41] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:21:41] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:21:43] [INFO ] Implicit Places using invariants and state equation in 2253 ms returned []
Implicit Place search using SMT with State Equation took 2494 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-24 14:21:43] [INFO ] Redundant transitions in 1 ms returned []
Running 215 sub problems to find dead transitions.
[2026-05-24 14:21:43] [INFO ] Invariant cache hit.
[2026-05-24 14:21:43] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/210 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/210 variables, 18/20 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/210 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 3 (OVERLAPS) 1/211 variables, 12/32 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/211 variables, 0/32 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 5 (OVERLAPS) 216/427 variables, 211/243 constraints. Problems are: Problem set: 0 solved, 215 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/427 variables, 38/281 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/427 variables, 0/281 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 8 (OVERLAPS) 0/427 variables, 0/281 constraints. Problems are: Problem set: 0 solved, 215 unsolved
No progress, stopping.
After SMT solving in domain Real declared 427/427 variables, and 281 constraints, problems are : Problem set: 0 solved, 215 unsolved in 14514 ms.
Refiners :[Positive P Invariants (semi-flows): 14/14 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 211/211 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 215/215 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 215 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/210 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/210 variables, 18/20 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/210 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 3 (OVERLAPS) 1/211 variables, 12/32 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/211 variables, 0/32 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 5 (OVERLAPS) 216/427 variables, 211/243 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/427 variables, 38/281 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/427 variables, 215/496 constraints. Problems are: Problem set: 0 solved, 215 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:10] [INFO ] Deduced a trap composed of 8 places in 64 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:11] [INFO ] Deduced a trap composed of 10 places in 74 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:11] [INFO ] Deduced a trap composed of 14 places in 73 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:11] [INFO ] Deduced a trap composed of 19 places in 93 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:11] [INFO ] Deduced a trap composed of 19 places in 97 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:12] [INFO ] Deduced a trap composed of 23 places in 80 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:12] [INFO ] Deduced a trap composed of 32 places in 93 ms of which 16 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:12] [INFO ] Deduced a trap composed of 57 places in 88 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:12] [INFO ] Deduced a trap composed of 57 places in 93 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:12] [INFO ] Deduced a trap composed of 50 places in 74 ms of which 15 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:13] [INFO ] Deduced a trap composed of 51 places in 89 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:13] [INFO ] Deduced a trap composed of 53 places in 88 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:13] [INFO ] Deduced a trap composed of 54 places in 90 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:13] [INFO ] Deduced a trap composed of 54 places in 99 ms of which 16 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:13] [INFO ] Deduced a trap composed of 54 places in 85 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:13] [INFO ] Deduced a trap composed of 57 places in 86 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:13] [INFO ] Deduced a trap composed of 64 places in 82 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:15] [INFO ] Deduced a trap composed of 49 places in 90 ms of which 19 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/427 variables, 18/514 constraints. Problems are: Problem set: 0 solved, 215 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 427/427 variables, and 514 constraints, problems are : Problem set: 0 solved, 215 unsolved in 30013 ms.
Refiners :[Positive P Invariants (semi-flows): 14/14 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 211/211 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 215/215 constraints, Known Traps: 18/18 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 44573ms problems are : Problem set: 0 solved, 215 unsolved
Search for dead transitions found 0 dead transitions in 44573ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 47083 ms. Remains : 211/211 places, 216/216 transitions.
Attempting over-approximation, by ignoring read arcs.
Performed 18 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 0 with 18 Pre rules applied. Total rules applied 0 place count 211 transition count 198
Deduced a syphon composed of 18 places in 0 ms
Reduce places removed 18 places and 0 transitions.
Iterating global reduction 0 with 36 rules applied. Total rules applied 36 place count 193 transition count 198
Discarding 8 places :
Symmetric choice reduction at 0 with 8 rule applications. Total rules 44 place count 185 transition count 190
Iterating global reduction 0 with 8 rules applied. Total rules applied 52 place count 185 transition count 190
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 0 with 2 rules applied. Total rules applied 54 place count 184 transition count 189
Free-agglomeration rule (complex) applied 2 times.
Iterating global reduction 0 with 2 rules applied. Total rules applied 56 place count 184 transition count 187
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 58 place count 182 transition count 187
Applied a total of 58 rules in 19 ms. Remains 182 /211 variables (removed 29) and now considering 187/216 (removed 29) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 187 rows 182 cols
[2026-05-24 14:22:27] [INFO ] Computed 32 invariants in 5 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-24 14:22:28] [INFO ] [Real]Absence check using 7 positive place invariants in 4 ms returned sat
[2026-05-24 14:22:28] [INFO ] [Real]Absence check using 7 positive and 25 generalized place invariants in 6 ms returned sat
[2026-05-24 14:22:28] [INFO ] After 88ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-24 14:22:28] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-24 14:22:28] [INFO ] After 6ms SMT Verify possible using 1 Read/Feed constraints in real domain returned unsat :0 sat :1
TRAPS : Iteration 0
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:28] [INFO ] Deduced a trap composed of 16 places in 99 ms of which 5 ms to minimize.
TRAPS : Iteration 1
[2026-05-24 14:22:28] [INFO ] After 125ms SMT Verify possible using trap constraints in real domain returned unsat :0 sat :0 real:1
[2026-05-24 14:22:28] [INFO ] After 336ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-24 14:22:28] [INFO ] [Nat]Absence check using 7 positive place invariants in 3 ms returned sat
[2026-05-24 14:22:28] [INFO ] [Nat]Absence check using 7 positive and 25 generalized place invariants in 5 ms returned sat
[2026-05-24 14:22:28] [INFO ] After 61ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-24 14:22:28] [INFO ] After 7ms SMT Verify possible using 1 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:28] [INFO ] Deduced a trap composed of 5 places in 76 ms of which 4 ms to minimize.
[2026-05-24 14:22:28] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 89 ms
TRAPS : Iteration 1
[2026-05-24 14:22:28] [INFO ] After 114ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-24 14:22:28] [INFO ] After 245ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
Over-approximation ignoring read arcs solved 0 properties in 622 ms.
RANDOM walk for 40000 steps (5689 resets) in 64 ms. (615 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (3728 resets) in 46 ms. (851 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 773185 steps, run timeout after 3001 ms. (steps per millisecond=257 ) properties seen :0 out of 1
Probabilistic random walk after 773185 steps, saw 386680 distinct states, run finished after 3001 ms. (steps per millisecond=257 ) properties seen :0
// Phase 1: matrix 246 rows 252 cols
[2026-05-24 14:22:31] [INFO ] Computed 43 invariants in 9 ms
[2026-05-24 14:22:31] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 7/8 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 84/92 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/92 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 55/147 variables, 18/25 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:31] [INFO ] Deduced a trap composed of 3 places in 45 ms of which 2 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/147 variables, 1/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/147 variables, 0/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 43/190 variables, 5/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/190 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 28/218 variables, 9/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/218 variables, 0/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 236/454 variables, 218/258 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/454 variables, 24/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/454 variables, 0/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 15 (OVERLAPS) 37/491 variables, 28/310 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/491 variables, 2/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/491 variables, 1/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/491 variables, 0/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 2/493 variables, 2/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/493 variables, 2/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/493 variables, 0/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 5/498 variables, 4/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (INCLUDED_ONLY) 0/498 variables, 1/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (INCLUDED_ONLY) 0/498 variables, 0/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 25 (OVERLAPS) 0/498 variables, 0/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 498/498 variables, and 322 constraints, problems are : Problem set: 0 solved, 1 unsolved in 347 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 7/8 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 84/92 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/92 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 55/147 variables, 18/25 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/147 variables, 1/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/147 variables, 0/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 43/190 variables, 5/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/190 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 28/218 variables, 9/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/218 variables, 0/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 236/454 variables, 218/258 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/454 variables, 24/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/454 variables, 1/283 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:32] [INFO ] Deduced a trap along path composed of 2 places in 13 ms of which 1 ms to minimize.
At refinement iteration 15 (INCLUDED_ONLY) 0/454 variables, 1/284 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/454 variables, 0/284 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 37/491 variables, 28/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/491 variables, 2/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/491 variables, 1/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/491 variables, 0/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 2/493 variables, 2/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/493 variables, 2/319 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (INCLUDED_ONLY) 0/493 variables, 0/319 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (OVERLAPS) 5/498 variables, 4/323 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 25 (INCLUDED_ONLY) 0/498 variables, 1/324 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 26 (INCLUDED_ONLY) 0/498 variables, 0/324 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 27 (OVERLAPS) 0/498 variables, 0/324 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 498/498 variables, and 324 constraints, problems are : Problem set: 0 solved, 1 unsolved in 447 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 815ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 40 ms.
Support contains 1 out of 252 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 252/252 places, 246/246 transitions.
Graph (complete) has 834 edges and 252 vertex of which 251 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.1 ms
Discarding 1 places :
Also discarding 0 output 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 2 place count 251 transition count 245
Free-agglomeration rule (complex) applied 26 times.
Iterating global reduction 1 with 26 rules applied. Total rules applied 28 place count 251 transition count 219
Reduce places removed 26 places and 0 transitions.
Iterating post reduction 1 with 26 rules applied. Total rules applied 54 place count 225 transition count 219
Partial Free-agglomeration rule applied 25 times.
Drop transitions (Partial Free agglomeration) removed 25 transitions
Iterating global reduction 2 with 25 rules applied. Total rules applied 79 place count 225 transition count 219
Applied a total of 79 rules in 28 ms. Remains 225 /252 variables (removed 27) and now considering 219/246 (removed 27) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 28 ms. Remains : 225/252 places, 219/246 transitions.
RANDOM walk for 40000 steps (5714 resets) in 119 ms. (333 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (3692 resets) in 39 ms. (1000 steps per ms) remains 1/1 properties
Probably explored full state space saw : 355343 states, properties seen :0
Probabilistic random walk after 710692 steps, saw 355343 distinct states, run finished after 2637 ms. (steps per millisecond=269 ) properties seen :0
Interrupted probabilistic random walk after 786257 steps, run timeout after 3041 ms. (steps per millisecond=258 ) properties seen :0 out of 1
Exhaustive walk after 786257 steps, saw 393217 distinct states, run finished after 3041 ms. (steps per millisecond=258 ) properties seen :0
// Phase 1: matrix 219 rows 225 cols
[2026-05-24 14:22:38] [INFO ] Computed 43 invariants in 9 ms
[2026-05-24 14:22:38] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 17/18 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/18 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 117/135 variables, 14/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:38] [INFO ] Deduced a trap composed of 10 places in 54 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:38] [INFO ] Deduced a trap composed of 13 places in 51 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:38] [INFO ] Deduced a trap composed of 14 places in 47 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:38] [INFO ] Deduced a trap composed of 17 places in 43 ms of which 3 ms to minimize.
At refinement iteration 4 (INCLUDED_ONLY) 0/135 variables, 4/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/135 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 83/218 variables, 25/44 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:38] [INFO ] Deduced a trap composed of 4 places in 101 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:38] [INFO ] Deduced a trap composed of 7 places in 110 ms of which 7 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/218 variables, 2/46 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/218 variables, 0/46 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 2/220 variables, 1/47 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/220 variables, 0/47 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 219/439 variables, 220/267 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (INCLUDED_ONLY) 0/439 variables, 38/305 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/439 variables, 0/305 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 5/444 variables, 5/310 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/444 variables, 2/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/444 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 0/444 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 444/444 variables, and 312 constraints, problems are : Problem set: 0 solved, 1 unsolved in 697 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 225/225 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 6/6 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 17/18 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/18 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 117/135 variables, 14/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/135 variables, 4/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/135 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 83/218 variables, 25/44 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/218 variables, 2/46 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:39] [INFO ] Deduced a trap composed of 6 places in 87 ms of which 6 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/218 variables, 1/47 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/218 variables, 0/47 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 2/220 variables, 1/48 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/220 variables, 0/48 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 219/439 variables, 220/268 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/439 variables, 38/306 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/439 variables, 1/307 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/439 variables, 0/307 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 5/444 variables, 5/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/444 variables, 2/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/444 variables, 0/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 0/444 variables, 0/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 444/444 variables, and 314 constraints, problems are : Problem set: 0 solved, 1 unsolved in 383 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 225/225 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 7/7 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 1105ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 26 ms.
Support contains 1 out of 225 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 225/225 places, 219/219 transitions.
Applied a total of 0 rules in 4 ms. Remains 225 /225 variables (removed 0) and now considering 219/219 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 225/225 places, 219/219 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 225/225 places, 219/219 transitions.
Applied a total of 0 rules in 3 ms. Remains 225 /225 variables (removed 0) and now considering 219/219 (removed 0) transitions.
[2026-05-24 14:22:39] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:22:39] [INFO ] Implicit Places using invariants in 475 ms returned [43, 70, 75, 95, 101, 122, 127, 147, 152, 173, 179]
[2026-05-24 14:22:39] [INFO ] Actually due to overlaps returned [75, 43, 70]
Discarding 3 places :
Implicit Place search using SMT only with invariants took 478 ms to find 3 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 222/225 places, 219/219 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 222 transition count 218
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 221 transition count 218
Partial Free-agglomeration rule applied 1 times.
Drop transitions (Partial Free agglomeration) removed 1 transitions
Iterating global reduction 1 with 1 rules applied. Total rules applied 3 place count 221 transition count 218
Applied a total of 3 rules in 14 ms. Remains 221 /222 variables (removed 1) and now considering 218/219 (removed 1) transitions.
// Phase 1: matrix 218 rows 221 cols
[2026-05-24 14:22:39] [INFO ] Computed 40 invariants in 10 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:22:40] [INFO ] Implicit Places using invariants in 371 ms returned [91, 97, 118, 123, 143, 148, 169, 175]
[2026-05-24 14:22:40] [INFO ] Actually due to overlaps returned [97, 91]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 384 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 2 : 219/225 places, 218/219 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 219 transition count 217
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 218 transition count 217
Applied a total of 2 rules in 7 ms. Remains 218 /219 variables (removed 1) and now considering 217/218 (removed 1) transitions.
// Phase 1: matrix 217 rows 218 cols
[2026-05-24 14:22:40] [INFO ] Computed 38 invariants in 11 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:22:40] [INFO ] Implicit Places using invariants in 330 ms returned [115, 120, 140, 145, 166, 172]
[2026-05-24 14:22:40] [INFO ] Actually due to overlaps returned [120, 115]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 341 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 3 : 216/225 places, 217/219 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 216 transition count 216
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 215 transition count 216
Applied a total of 2 rules in 8 ms. Remains 215 /216 variables (removed 1) and now considering 216/217 (removed 1) transitions.
// Phase 1: matrix 216 rows 215 cols
[2026-05-24 14:22:40] [INFO ] Computed 36 invariants in 9 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:22:40] [INFO ] Implicit Places using invariants in 264 ms returned [137, 142, 163, 169]
[2026-05-24 14:22:40] [INFO ] Actually due to overlaps returned [142, 137]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 266 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 4 : 213/225 places, 216/219 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 213 transition count 215
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 212 transition count 215
Applied a total of 2 rules in 6 ms. Remains 212 /213 variables (removed 1) and now considering 215/216 (removed 1) transitions.
// Phase 1: matrix 215 rows 212 cols
[2026-05-24 14:22:40] [INFO ] Computed 34 invariants in 16 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:22:41] [INFO ] Implicit Places using invariants in 290 ms returned [160, 166]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 291 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 5 : 210/225 places, 215/219 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 210 transition count 214
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 209 transition count 214
Applied a total of 2 rules in 7 ms. Remains 209 /210 variables (removed 1) and now considering 214/215 (removed 1) transitions.
// Phase 1: matrix 214 rows 209 cols
[2026-05-24 14:22:41] [INFO ] Computed 32 invariants in 42 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:22:41] [INFO ] Implicit Places using invariants in 291 ms returned []
[2026-05-24 14:22:41] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:22:41] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:22:43] [INFO ] Implicit Places using invariants and state equation in 1844 ms returned []
Implicit Place search using SMT with State Equation took 2149 ms to find 0 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 6 : 209/225 places, 214/219 transitions.
Finished structural reductions in REACHABILITY mode , in 6 iterations and 3955 ms. Remains : 209/225 places, 214/219 transitions.
RANDOM walk for 40000 steps (5767 resets) in 40 ms. (975 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (3665 resets) in 33 ms. (1176 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 825470 steps, run timeout after 3001 ms. (steps per millisecond=275 ) properties seen :0 out of 1
Probabilistic random walk after 825470 steps, saw 412829 distinct states, run finished after 3001 ms. (steps per millisecond=275 ) properties seen :0
[2026-05-24 14:22:46] [INFO ] Invariant cache hit.
[2026-05-24 14:22:46] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 82/83 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/83 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 67/150 variables, 11/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/150 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 54/204 variables, 18/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:46] [INFO ] Deduced a trap composed of 4 places in 85 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:46] [INFO ] Deduced a trap composed of 7 places in 81 ms of which 6 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/204 variables, 2/32 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/204 variables, 0/32 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 214/418 variables, 204/236 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (INCLUDED_ONLY) 0/418 variables, 38/274 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/418 variables, 0/274 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 5/423 variables, 5/279 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/423 variables, 2/281 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/423 variables, 0/281 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 0/423 variables, 0/281 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 423/423 variables, and 281 constraints, problems are : Problem set: 0 solved, 1 unsolved in 425 ms.
Refiners :[Positive P Invariants (semi-flows): 14/14 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 209/209 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 2/2 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 82/83 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/83 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 67/150 variables, 11/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/150 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 54/204 variables, 18/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/204 variables, 2/32 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:46] [INFO ] Deduced a trap composed of 6 places in 90 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:46] [INFO ] Deduced a trap composed of 7 places in 86 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:47] [INFO ] Deduced a trap composed of 9 places in 88 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:47] [INFO ] Deduced a trap composed of 10 places in 88 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:47] [INFO ] Deduced a trap composed of 12 places in 84 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:47] [INFO ] Deduced a trap composed of 13 places in 91 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:47] [INFO ] Deduced a trap composed of 13 places in 89 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:47] [INFO ] Deduced a trap composed of 14 places in 92 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:47] [INFO ] Deduced a trap composed of 16 places in 91 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:47] [INFO ] Deduced a trap composed of 16 places in 82 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:47] [INFO ] Deduced a trap composed of 18 places in 85 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:47] [INFO ] Deduced a trap composed of 18 places in 84 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:47] [INFO ] Deduced a trap composed of 19 places in 92 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:48] [INFO ] Deduced a trap composed of 19 places in 76 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:48] [INFO ] Deduced a trap composed of 53 places in 89 ms of which 15 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:48] [INFO ] Deduced a trap composed of 19 places in 88 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:48] [INFO ] Deduced a trap composed of 52 places in 81 ms of which 15 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:48] [INFO ] Deduced a trap composed of 52 places in 95 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:48] [INFO ] Deduced a trap composed of 55 places in 96 ms of which 17 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:48] [INFO ] Deduced a trap composed of 15 places in 73 ms of which 9 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/204 variables, 20/52 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:48] [INFO ] Deduced a trap composed of 56 places in 99 ms of which 17 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:48] [INFO ] Deduced a trap composed of 10 places in 90 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:48] [INFO ] Deduced a trap composed of 54 places in 79 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:22:48] [INFO ] Deduced a trap composed of 54 places in 97 ms of which 18 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/204 variables, 4/56 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/204 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 214/418 variables, 204/260 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/418 variables, 38/298 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/418 variables, 1/299 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/418 variables, 0/299 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 5/423 variables, 5/304 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/423 variables, 2/306 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/423 variables, 0/306 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 0/423 variables, 0/306 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 423/423 variables, and 306 constraints, problems are : Problem set: 0 solved, 1 unsolved in 2551 ms.
Refiners :[Positive P Invariants (semi-flows): 14/14 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 209/209 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 26/26 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 2981ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 31 ms.
Support contains 1 out of 209 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 209/209 places, 214/214 transitions.
Applied a total of 0 rules in 3 ms. Remains 209 /209 variables (removed 0) and now considering 214/214 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 209/209 places, 214/214 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 209/209 places, 214/214 transitions.
Applied a total of 0 rules in 3 ms. Remains 209 /209 variables (removed 0) and now considering 214/214 (removed 0) transitions.
[2026-05-24 14:22:49] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:22:49] [INFO ] Implicit Places using invariants in 266 ms returned []
[2026-05-24 14:22:49] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:22:49] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:22:51] [INFO ] Implicit Places using invariants and state equation in 1844 ms returned []
Implicit Place search using SMT with State Equation took 2122 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-24 14:22:51] [INFO ] Redundant transitions in 1 ms returned []
Running 213 sub problems to find dead transitions.
[2026-05-24 14:22:51] [INFO ] Invariant cache hit.
[2026-05-24 14:22:51] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/208 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/208 variables, 18/20 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/208 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 3 (OVERLAPS) 1/209 variables, 12/32 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/209 variables, 0/32 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 5 (OVERLAPS) 214/423 variables, 209/241 constraints. Problems are: Problem set: 0 solved, 213 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/423 variables, 38/279 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/423 variables, 0/279 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 8 (OVERLAPS) 0/423 variables, 0/279 constraints. Problems are: Problem set: 0 solved, 213 unsolved
No progress, stopping.
After SMT solving in domain Real declared 423/423 variables, and 279 constraints, problems are : Problem set: 0 solved, 213 unsolved in 13475 ms.
Refiners :[Positive P Invariants (semi-flows): 14/14 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 209/209 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 213/213 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 213 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/208 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/208 variables, 18/20 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/208 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 3 (OVERLAPS) 1/209 variables, 12/32 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/209 variables, 0/32 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 5 (OVERLAPS) 214/423 variables, 209/241 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/423 variables, 38/279 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/423 variables, 213/492 constraints. Problems are: Problem set: 0 solved, 213 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:15] [INFO ] Deduced a trap composed of 29 places in 28 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:16] [INFO ] Deduced a trap composed of 8 places in 72 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:16] [INFO ] Deduced a trap composed of 4 places in 49 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:19] [INFO ] Deduced a trap composed of 3 places in 77 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:21] [INFO ] Deduced a trap composed of 9 places in 79 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:22] [INFO ] Deduced a trap composed of 12 places in 59 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:22] [INFO ] Deduced a trap composed of 15 places in 56 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:22] [INFO ] Deduced a trap composed of 19 places in 64 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:23] [INFO ] Deduced a trap composed of 13 places in 69 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:23] [INFO ] Deduced a trap composed of 18 places in 64 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:24] [INFO ] Deduced a trap composed of 21 places in 52 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:24] [INFO ] Deduced a trap composed of 22 places in 50 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:24] [INFO ] Deduced a trap composed of 25 places in 52 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:24] [INFO ] Deduced a trap composed of 28 places in 48 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:25] [INFO ] Deduced a trap composed of 31 places in 41 ms of which 2 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:25] [INFO ] Deduced a trap composed of 32 places in 47 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:25] [INFO ] Deduced a trap composed of 39 places in 92 ms of which 17 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:25] [INFO ] Deduced a trap composed of 40 places in 88 ms of which 18 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:27] [INFO ] Deduced a trap composed of 28 places in 40 ms of which 2 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/423 variables, 19/511 constraints. Problems are: Problem set: 0 solved, 213 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:34] [INFO ] Deduced a trap composed of 10 places in 77 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:34] [INFO ] Deduced a trap composed of 65 places in 88 ms of which 16 ms to minimize.
SMT process timed out in 43540ms, After SMT, problems are : Problem set: 0 solved, 213 unsolved
Search for dead transitions found 0 dead transitions in 43540ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 45672 ms. Remains : 209/209 places, 214/214 transitions.
Attempting over-approximation, by ignoring read arcs.
Performed 18 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 0 with 18 Pre rules applied. Total rules applied 0 place count 209 transition count 196
Deduced a syphon composed of 18 places in 0 ms
Reduce places removed 18 places and 0 transitions.
Iterating global reduction 0 with 36 rules applied. Total rules applied 36 place count 191 transition count 196
Discarding 8 places :
Symmetric choice reduction at 0 with 8 rule applications. Total rules 44 place count 183 transition count 188
Iterating global reduction 0 with 8 rules applied. Total rules applied 52 place count 183 transition count 188
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 0 with 2 rules applied. Total rules applied 54 place count 182 transition count 187
Free-agglomeration rule (complex) applied 2 times.
Iterating global reduction 0 with 2 rules applied. Total rules applied 56 place count 182 transition count 185
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 58 place count 180 transition count 185
Applied a total of 58 rules in 26 ms. Remains 180 /209 variables (removed 29) and now considering 185/214 (removed 29) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 185 rows 180 cols
[2026-05-24 14:23:35] [INFO ] Computed 32 invariants in 16 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-24 14:23:35] [INFO ] [Real]Absence check using 14 positive place invariants in 9 ms returned sat
[2026-05-24 14:23:35] [INFO ] [Real]Absence check using 14 positive and 18 generalized place invariants in 3 ms returned sat
[2026-05-24 14:23:35] [INFO ] After 76ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-24 14:23:35] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-24 14:23:35] [INFO ] After 12ms SMT Verify possible using 1 Read/Feed constraints in real domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-24 14:23:35] [INFO ] After 26ms SMT Verify possible using trap constraints in real domain returned unsat :0 sat :1
[2026-05-24 14:23:35] [INFO ] After 164ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :1
Over-approximation ignoring read arcs solved 0 properties in 216 ms.
RANDOM walk for 40000 steps (5831 resets) in 74 ms. (533 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40001 steps (3711 resets) in 40 ms. (975 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 775287 steps, run timeout after 3001 ms. (steps per millisecond=258 ) properties seen :0 out of 1
Probabilistic random walk after 775287 steps, saw 387727 distinct states, run finished after 3001 ms. (steps per millisecond=258 ) properties seen :0
// Phase 1: matrix 246 rows 252 cols
[2026-05-24 14:23:38] [INFO ] Computed 43 invariants in 16 ms
[2026-05-24 14:23:38] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 54/55 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/55 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 57/112 variables, 13/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:38] [INFO ] Deduced a trap composed of 3 places in 52 ms of which 2 ms to minimize.
At refinement iteration 4 (INCLUDED_ONLY) 0/112 variables, 1/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/112 variables, 0/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 35/147 variables, 10/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/147 variables, 0/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 43/190 variables, 5/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/190 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 28/218 variables, 9/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/218 variables, 0/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 236/454 variables, 218/258 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/454 variables, 24/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/454 variables, 0/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 37/491 variables, 28/310 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/491 variables, 2/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/491 variables, 1/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/491 variables, 0/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 2/493 variables, 2/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/493 variables, 2/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/493 variables, 0/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 5/498 variables, 4/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (INCLUDED_ONLY) 0/498 variables, 1/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (INCLUDED_ONLY) 0/498 variables, 0/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 25 (OVERLAPS) 0/498 variables, 0/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 498/498 variables, and 322 constraints, problems are : Problem set: 0 solved, 1 unsolved in 356 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 54/55 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/55 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 57/112 variables, 13/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/112 variables, 1/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/112 variables, 0/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 35/147 variables, 10/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/147 variables, 0/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 43/190 variables, 5/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/190 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 28/218 variables, 9/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/218 variables, 0/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 236/454 variables, 218/258 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/454 variables, 24/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/454 variables, 1/283 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:38] [INFO ] Deduced a trap along path composed of 5 places in 26 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:38] [INFO ] Deduced a trap along path composed of 2 places in 16 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:38] [INFO ] Deduced a trap along path composed of 2 places in 25 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:38] [INFO ] Deduced a trap along path composed of 2 places in 23 ms of which 1 ms to minimize.
At refinement iteration 15 (INCLUDED_ONLY) 0/454 variables, 4/287 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/454 variables, 0/287 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 37/491 variables, 28/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/491 variables, 2/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/491 variables, 1/318 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:39] [INFO ] Deduced a trap along path composed of 8 places in 28 ms of which 1 ms to minimize.
At refinement iteration 20 (INCLUDED_ONLY) 0/491 variables, 1/319 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/491 variables, 0/319 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 2/493 variables, 2/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (INCLUDED_ONLY) 0/493 variables, 2/323 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (INCLUDED_ONLY) 0/493 variables, 0/323 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 25 (OVERLAPS) 5/498 variables, 4/327 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 26 (INCLUDED_ONLY) 0/498 variables, 1/328 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 27 (INCLUDED_ONLY) 0/498 variables, 0/328 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 28 (OVERLAPS) 0/498 variables, 0/328 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 498/498 variables, and 328 constraints, problems are : Problem set: 0 solved, 1 unsolved in 885 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 5/5 constraints]
After SMT, in 1261ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 103 ms.
Support contains 1 out of 252 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 252/252 places, 246/246 transitions.
Graph (complete) has 834 edges and 252 vertex of which 251 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.0 ms
Discarding 1 places :
Also discarding 0 output 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 2 place count 251 transition count 245
Free-agglomeration rule (complex) applied 24 times.
Iterating global reduction 1 with 24 rules applied. Total rules applied 26 place count 251 transition count 221
Reduce places removed 24 places and 0 transitions.
Iterating post reduction 1 with 24 rules applied. Total rules applied 50 place count 227 transition count 221
Partial Free-agglomeration rule applied 25 times.
Drop transitions (Partial Free agglomeration) removed 25 transitions
Iterating global reduction 2 with 25 rules applied. Total rules applied 75 place count 227 transition count 221
Applied a total of 75 rules in 11 ms. Remains 227 /252 variables (removed 25) and now considering 221/246 (removed 25) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 11 ms. Remains : 227/252 places, 221/246 transitions.
RANDOM walk for 40000 steps (5724 resets) in 87 ms. (454 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40001 steps (3626 resets) in 44 ms. (888 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 765789 steps, run timeout after 3001 ms. (steps per millisecond=255 ) properties seen :0 out of 1
Probabilistic random walk after 765789 steps, saw 382983 distinct states, run finished after 3001 ms. (steps per millisecond=255 ) properties seen :0
// Phase 1: matrix 221 rows 227 cols
[2026-05-24 14:23:42] [INFO ] Computed 43 invariants in 14 ms
[2026-05-24 14:23:42] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 82/83 variables, 8/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/83 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 114/197 variables, 22/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:42] [INFO ] Deduced a trap composed of 4 places in 90 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:42] [INFO ] Deduced a trap composed of 6 places in 81 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:43] [INFO ] Deduced a trap composed of 7 places in 95 ms of which 6 ms to minimize.
At refinement iteration 4 (INCLUDED_ONLY) 0/197 variables, 3/33 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/197 variables, 0/33 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 25/222 variables, 11/44 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/222 variables, 0/44 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 221/443 variables, 222/266 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/443 variables, 38/304 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/443 variables, 0/304 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 5/448 variables, 5/309 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/448 variables, 2/311 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/448 variables, 0/311 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 0/448 variables, 0/311 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 448/448 variables, and 311 constraints, problems are : Problem set: 0 solved, 1 unsolved in 519 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 227/227 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 3/3 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 82/83 variables, 8/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/83 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 114/197 variables, 22/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/197 variables, 3/33 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:43] [INFO ] Deduced a trap composed of 3 places in 89 ms of which 4 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/197 variables, 1/34 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/197 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 25/222 variables, 11/45 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:43] [INFO ] Deduced a trap composed of 10 places in 85 ms of which 7 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/222 variables, 1/46 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/222 variables, 0/46 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 221/443 variables, 222/268 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/443 variables, 38/306 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/443 variables, 1/307 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/443 variables, 0/307 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 5/448 variables, 5/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/448 variables, 2/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/448 variables, 0/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 0/448 variables, 0/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 448/448 variables, and 314 constraints, problems are : Problem set: 0 solved, 1 unsolved in 476 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 227/227 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 5/5 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 1014ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 32 ms.
Support contains 1 out of 227 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 227/227 places, 221/221 transitions.
Applied a total of 0 rules in 3 ms. Remains 227 /227 variables (removed 0) and now considering 221/221 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 227/227 places, 221/221 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 227/227 places, 221/221 transitions.
Applied a total of 0 rules in 3 ms. Remains 227 /227 variables (removed 0) and now considering 221/221 (removed 0) transitions.
[2026-05-24 14:23:43] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:23:44] [INFO ] Implicit Places using invariants in 485 ms returned [72, 77, 97, 103, 124, 129, 149, 154, 175, 181]
[2026-05-24 14:23:44] [INFO ] Actually due to overlaps returned [77, 72]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 489 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 225/227 places, 221/221 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 225 transition count 220
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 224 transition count 220
Applied a total of 2 rules in 6 ms. Remains 224 /225 variables (removed 1) and now considering 220/221 (removed 1) transitions.
// Phase 1: matrix 220 rows 224 cols
[2026-05-24 14:23:44] [INFO ] Computed 41 invariants in 17 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:23:44] [INFO ] Implicit Places using invariants in 360 ms returned [94, 100, 121, 126, 146, 151, 172, 178]
[2026-05-24 14:23:44] [INFO ] Actually due to overlaps returned [100, 94]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 361 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 2 : 222/227 places, 220/221 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 222 transition count 219
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 221 transition count 219
Applied a total of 2 rules in 9 ms. Remains 221 /222 variables (removed 1) and now considering 219/220 (removed 1) transitions.
// Phase 1: matrix 219 rows 221 cols
[2026-05-24 14:23:44] [INFO ] Computed 39 invariants in 7 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:23:44] [INFO ] Implicit Places using invariants in 360 ms returned [118, 123, 143, 148, 169, 175]
[2026-05-24 14:23:44] [INFO ] Actually due to overlaps returned [123, 118]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 362 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 3 : 219/227 places, 219/221 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 219 transition count 218
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 218 transition count 218
Applied a total of 2 rules in 9 ms. Remains 218 /219 variables (removed 1) and now considering 218/219 (removed 1) transitions.
// Phase 1: matrix 218 rows 218 cols
[2026-05-24 14:23:44] [INFO ] Computed 37 invariants in 17 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:23:45] [INFO ] Implicit Places using invariants in 331 ms returned [140, 145, 166, 172]
[2026-05-24 14:23:45] [INFO ] Actually due to overlaps returned [145, 140]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 333 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 4 : 216/227 places, 218/221 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 216 transition count 217
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 215 transition count 217
Applied a total of 2 rules in 6 ms. Remains 215 /216 variables (removed 1) and now considering 217/218 (removed 1) transitions.
// Phase 1: matrix 217 rows 215 cols
[2026-05-24 14:23:45] [INFO ] Computed 35 invariants in 14 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:23:45] [INFO ] Implicit Places using invariants in 277 ms returned [163, 169]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 278 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 5 : 213/227 places, 217/221 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 213 transition count 216
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 212 transition count 216
Applied a total of 2 rules in 7 ms. Remains 212 /213 variables (removed 1) and now considering 216/217 (removed 1) transitions.
// Phase 1: matrix 216 rows 212 cols
[2026-05-24 14:23:45] [INFO ] Computed 33 invariants in 17 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:23:45] [INFO ] Implicit Places using invariants in 301 ms returned []
[2026-05-24 14:23:45] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:23:45] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:23:47] [INFO ] Implicit Places using invariants and state equation in 1875 ms returned []
Implicit Place search using SMT with State Equation took 2178 ms to find 0 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 6 : 212/227 places, 216/221 transitions.
Finished structural reductions in REACHABILITY mode , in 6 iterations and 4041 ms. Remains : 212/227 places, 216/221 transitions.
RANDOM walk for 40000 steps (5719 resets) in 93 ms. (425 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40001 steps (3702 resets) in 56 ms. (701 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 818358 steps, run timeout after 3001 ms. (steps per millisecond=272 ) properties seen :0 out of 1
Probabilistic random walk after 818358 steps, saw 409272 distinct states, run finished after 3003 ms. (steps per millisecond=272 ) properties seen :0
[2026-05-24 14:23:50] [INFO ] Invariant cache hit.
[2026-05-24 14:23:50] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 112/113 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/113 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 16/129 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/129 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 78/207 variables, 29/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:50] [INFO ] Deduced a trap composed of 4 places in 88 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:51] [INFO ] Deduced a trap composed of 6 places in 80 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:51] [INFO ] Deduced a trap composed of 7 places in 82 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:51] [INFO ] Deduced a trap composed of 9 places in 84 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:51] [INFO ] Deduced a trap composed of 9 places in 78 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:51] [INFO ] Deduced a trap composed of 10 places in 78 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:51] [INFO ] Deduced a trap composed of 10 places in 79 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:51] [INFO ] Deduced a trap composed of 13 places in 73 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:23:51] [INFO ] Deduced a trap composed of 13 places in 72 ms of which 7 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/207 variables, 9/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/207 variables, 0/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 216/423 variables, 207/247 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/423 variables, 38/285 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/423 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 5/428 variables, 5/290 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/428 variables, 2/292 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/428 variables, 0/292 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 0/428 variables, 0/292 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 428/428 variables, and 292 constraints, problems are : Problem set: 0 solved, 1 unsolved in 1069 ms.
Refiners :[Positive P Invariants (semi-flows): 4/4 constraints, Generalized P Invariants (flows): 29/29 constraints, State Equation: 212/212 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 9/9 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 112/113 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/113 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 16/129 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/129 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 78/207 variables, 29/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/207 variables, 9/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/207 variables, 0/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 216/423 variables, 207/247 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/423 variables, 38/285 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/423 variables, 1/286 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/423 variables, 0/286 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 5/428 variables, 5/291 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/428 variables, 2/293 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/428 variables, 0/293 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 0/428 variables, 0/293 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 428/428 variables, and 293 constraints, problems are : Problem set: 0 solved, 1 unsolved in 311 ms.
Refiners :[Positive P Invariants (semi-flows): 4/4 constraints, Generalized P Invariants (flows): 29/29 constraints, State Equation: 212/212 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 9/9 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 1387ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 29 ms.
Support contains 1 out of 212 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 212/212 places, 216/216 transitions.
Applied a total of 0 rules in 21 ms. Remains 212 /212 variables (removed 0) and now considering 216/216 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21 ms. Remains : 212/212 places, 216/216 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 212/212 places, 216/216 transitions.
Applied a total of 0 rules in 8 ms. Remains 212 /212 variables (removed 0) and now considering 216/216 (removed 0) transitions.
[2026-05-24 14:23:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:23:52] [INFO ] Implicit Places using invariants in 255 ms returned []
[2026-05-24 14:23:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:23:52] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:23:54] [INFO ] Implicit Places using invariants and state equation in 1914 ms returned []
Implicit Place search using SMT with State Equation took 2173 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-24 14:23:54] [INFO ] Redundant transitions in 2 ms returned []
Running 215 sub problems to find dead transitions.
[2026-05-24 14:23:54] [INFO ] Invariant cache hit.
[2026-05-24 14:23:54] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/211 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/211 variables, 29/31 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/211 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 3 (OVERLAPS) 1/212 variables, 2/33 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/212 variables, 0/33 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 5 (OVERLAPS) 216/428 variables, 212/245 constraints. Problems are: Problem set: 0 solved, 215 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/428 variables, 38/283 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/428 variables, 0/283 constraints. Problems are: Problem set: 0 solved, 215 unsolved
Detected timeout of ITS tools.
At refinement iteration 8 (OVERLAPS) 0/428 variables, 0/283 constraints. Problems are: Problem set: 0 solved, 215 unsolved
No progress, stopping.
After SMT solving in domain Real declared 428/428 variables, and 283 constraints, problems are : Problem set: 0 solved, 215 unsolved in 12827 ms.
Refiners :[Positive P Invariants (semi-flows): 4/4 constraints, Generalized P Invariants (flows): 29/29 constraints, State Equation: 212/212 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 215/215 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 215 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/211 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/211 variables, 29/31 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/211 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 3 (OVERLAPS) 1/212 variables, 2/33 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/212 variables, 0/33 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 5 (OVERLAPS) 216/428 variables, 212/245 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/428 variables, 38/283 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/428 variables, 215/498 constraints. Problems are: Problem set: 0 solved, 215 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:17] [INFO ] Deduced a trap composed of 15 places in 79 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:18] [INFO ] Deduced a trap composed of 63 places in 83 ms of which 16 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:18] [INFO ] Deduced a trap composed of 65 places in 84 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:18] [INFO ] Deduced a trap composed of 66 places in 80 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:18] [INFO ] Deduced a trap composed of 68 places in 77 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:18] [INFO ] Deduced a trap composed of 46 places in 92 ms of which 18 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:18] [INFO ] Deduced a trap composed of 48 places in 85 ms of which 19 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:19] [INFO ] Deduced a trap composed of 4 places in 77 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:20] [INFO ] Deduced a trap composed of 6 places in 86 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:20] [INFO ] Deduced a trap composed of 7 places in 81 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:21] [INFO ] Deduced a trap composed of 8 places in 75 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:21] [INFO ] Deduced a trap composed of 10 places in 66 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:22] [INFO ] Deduced a trap composed of 18 places in 61 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:23] [INFO ] Deduced a trap composed of 19 places in 67 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:23] [INFO ] Deduced a trap composed of 41 places in 101 ms of which 18 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:24] [INFO ] Deduced a trap composed of 41 places in 98 ms of which 18 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:24] [INFO ] Deduced a trap composed of 42 places in 87 ms of which 18 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:24] [INFO ] Deduced a trap composed of 45 places in 89 ms of which 19 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:24] [INFO ] Deduced a trap composed of 48 places in 90 ms of which 20 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:24] [INFO ] Deduced a trap composed of 49 places in 93 ms of which 21 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/428 variables, 20/518 constraints. Problems are: Problem set: 0 solved, 215 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:31] [INFO ] Deduced a trap composed of 68 places in 84 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:31] [INFO ] Deduced a trap composed of 71 places in 79 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:32] [INFO ] Deduced a trap composed of 74 places in 92 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:32] [INFO ] Deduced a trap composed of 76 places in 79 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:33] [INFO ] Deduced a trap composed of 49 places in 84 ms of which 18 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:34] [INFO ] Deduced a trap composed of 51 places in 92 ms of which 18 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:34] [INFO ] Deduced a trap composed of 49 places in 85 ms of which 18 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:34] [INFO ] Deduced a trap composed of 51 places in 83 ms of which 18 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:34] [INFO ] Deduced a trap composed of 55 places in 86 ms of which 20 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:34] [INFO ] Deduced a trap composed of 57 places in 87 ms of which 20 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:34] [INFO ] Deduced a trap composed of 55 places in 91 ms of which 22 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:34] [INFO ] Deduced a trap composed of 57 places in 82 ms of which 15 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:35] [INFO ] Deduced a trap composed of 43 places in 88 ms of which 18 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:35] [INFO ] Deduced a trap composed of 45 places in 91 ms of which 18 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:35] [INFO ] Deduced a trap composed of 55 places in 82 ms of which 17 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:35] [INFO ] Deduced a trap composed of 57 places in 87 ms of which 21 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:35] [INFO ] Deduced a trap composed of 55 places in 78 ms of which 17 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:35] [INFO ] Deduced a trap composed of 57 places in 83 ms of which 21 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:35] [INFO ] Deduced a trap composed of 61 places in 91 ms of which 18 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:35] [INFO ] Deduced a trap composed of 63 places in 84 ms of which 20 ms to minimize.
At refinement iteration 9 (INCLUDED_ONLY) 0/428 variables, 20/538 constraints. Problems are: Problem set: 0 solved, 215 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 428/428 variables, and 538 constraints, problems are : Problem set: 0 solved, 215 unsolved in 30015 ms.
Refiners :[Positive P Invariants (semi-flows): 4/4 constraints, Generalized P Invariants (flows): 29/29 constraints, State Equation: 212/212 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 215/215 constraints, Known Traps: 40/40 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 42871ms problems are : Problem set: 0 solved, 215 unsolved
Search for dead transitions found 0 dead transitions in 42872ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 45069 ms. Remains : 212/212 places, 216/216 transitions.
Attempting over-approximation, by ignoring read arcs.
Performed 18 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 0 with 18 Pre rules applied. Total rules applied 0 place count 212 transition count 198
Deduced a syphon composed of 18 places in 0 ms
Reduce places removed 18 places and 0 transitions.
Iterating global reduction 0 with 36 rules applied. Total rules applied 36 place count 194 transition count 198
Discarding 8 places :
Symmetric choice reduction at 0 with 8 rule applications. Total rules 44 place count 186 transition count 190
Iterating global reduction 0 with 8 rules applied. Total rules applied 52 place count 186 transition count 190
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 0 with 2 rules applied. Total rules applied 54 place count 185 transition count 189
Free-agglomeration rule (complex) applied 2 times.
Iterating global reduction 0 with 2 rules applied. Total rules applied 56 place count 185 transition count 187
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 58 place count 183 transition count 187
Applied a total of 58 rules in 11 ms. Remains 183 /212 variables (removed 29) and now considering 187/216 (removed 29) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 187 rows 183 cols
[2026-05-24 14:24:37] [INFO ] Computed 33 invariants in 9 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-24 14:24:37] [INFO ] [Real]Absence check using 8 positive place invariants in 5 ms returned sat
[2026-05-24 14:24:37] [INFO ] [Real]Absence check using 8 positive and 25 generalized place invariants in 6 ms returned sat
[2026-05-24 14:24:37] [INFO ] After 83ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-24 14:24:37] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-24 14:24:37] [INFO ] After 9ms SMT Verify possible using 1 Read/Feed constraints in real domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-24 14:24:37] [INFO ] After 21ms SMT Verify possible using trap constraints in real domain returned unsat :0 sat :1
[2026-05-24 14:24:37] [INFO ] After 167ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :1
Over-approximation ignoring read arcs solved 0 properties in 192 ms.
RANDOM walk for 40000 steps (5816 resets) in 66 ms. (597 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40001 steps (3684 resets) in 33 ms. (1176 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 790139 steps, run timeout after 3001 ms. (steps per millisecond=263 ) properties seen :0 out of 1
Probabilistic random walk after 790139 steps, saw 395152 distinct states, run finished after 3001 ms. (steps per millisecond=263 ) properties seen :0
// Phase 1: matrix 246 rows 252 cols
[2026-05-24 14:24:40] [INFO ] Computed 43 invariants in 16 ms
[2026-05-24 14:24:40] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 33/39 variables, 4/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/39 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 82/121 variables, 10/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/121 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 69/190 variables, 15/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:40] [INFO ] Deduced a trap composed of 3 places in 59 ms of which 4 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/190 variables, 1/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/190 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 28/218 variables, 9/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/218 variables, 0/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 236/454 variables, 218/258 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/454 variables, 24/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/454 variables, 0/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 15 (OVERLAPS) 37/491 variables, 28/310 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/491 variables, 2/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/491 variables, 1/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/491 variables, 0/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 2/493 variables, 2/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/493 variables, 2/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/493 variables, 0/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 5/498 variables, 4/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (INCLUDED_ONLY) 0/498 variables, 1/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (INCLUDED_ONLY) 0/498 variables, 0/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 25 (OVERLAPS) 0/498 variables, 0/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 498/498 variables, and 322 constraints, problems are : Problem set: 0 solved, 1 unsolved in 270 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 33/39 variables, 4/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/39 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 82/121 variables, 10/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/121 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 69/190 variables, 15/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/190 variables, 1/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/190 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 28/218 variables, 9/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/218 variables, 0/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 236/454 variables, 218/258 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/454 variables, 24/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/454 variables, 0/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 37/491 variables, 28/310 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/491 variables, 2/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/491 variables, 1/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/491 variables, 1/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:41] [INFO ] Deduced a trap along path composed of 4 places in 31 ms of which 1 ms to minimize.
At refinement iteration 19 (INCLUDED_ONLY) 0/491 variables, 1/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/491 variables, 0/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 2/493 variables, 2/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/493 variables, 2/319 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:41] [INFO ] Deduced a trap along path composed of 2 places in 19 ms of which 1 ms to minimize.
At refinement iteration 23 (INCLUDED_ONLY) 0/493 variables, 0/319 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (OVERLAPS) 5/498 variables, 4/323 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 25 (INCLUDED_ONLY) 0/498 variables, 1/324 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:41] [INFO ] Deduced a trap composed of 24 places in 57 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:41] [INFO ] Deduced a trap composed of 20 places in 49 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:41] [INFO ] Deduced a trap composed of 24 places in 54 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:41] [INFO ] Deduced a trap composed of 26 places in 52 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:41] [INFO ] Deduced a trap composed of 28 places in 50 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:42] [INFO ] Deduced a trap composed of 24 places in 52 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:42] [INFO ] Deduced a trap composed of 32 places in 49 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:42] [INFO ] Deduced a trap composed of 28 places in 52 ms of which 5 ms to minimize.
At refinement iteration 26 (INCLUDED_ONLY) 0/498 variables, 8/332 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 27 (INCLUDED_ONLY) 0/498 variables, 1/333 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 28 (INCLUDED_ONLY) 0/498 variables, 0/333 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 29 (OVERLAPS) 0/498 variables, 0/333 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 498/498 variables, and 333 constraints, problems are : Problem set: 0 solved, 1 unsolved in 1766 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 9/9 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 2058ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 177 ms.
Support contains 1 out of 252 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 252/252 places, 246/246 transitions.
Graph (complete) has 834 edges and 252 vertex of which 251 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.0 ms
Discarding 1 places :
Also discarding 0 output 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 2 place count 251 transition count 245
Free-agglomeration rule (complex) applied 27 times.
Iterating global reduction 1 with 27 rules applied. Total rules applied 29 place count 251 transition count 218
Reduce places removed 27 places and 0 transitions.
Iterating post reduction 1 with 27 rules applied. Total rules applied 56 place count 224 transition count 218
Partial Free-agglomeration rule applied 25 times.
Drop transitions (Partial Free agglomeration) removed 25 transitions
Iterating global reduction 2 with 25 rules applied. Total rules applied 81 place count 224 transition count 218
Applied a total of 81 rules in 12 ms. Remains 224 /252 variables (removed 28) and now considering 218/246 (removed 28) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 12 ms. Remains : 224/252 places, 218/246 transitions.
RANDOM walk for 40000 steps (5758 resets) in 75 ms. (526 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (3683 resets) in 85 ms. (465 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 794554 steps, run timeout after 3001 ms. (steps per millisecond=264 ) properties seen :0 out of 1
Probabilistic random walk after 794554 steps, saw 397370 distinct states, run finished after 3001 ms. (steps per millisecond=264 ) properties seen :0
// Phase 1: matrix 218 rows 224 cols
[2026-05-24 14:24:45] [INFO ] Computed 43 invariants in 18 ms
[2026-05-24 14:24:45] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 124/130 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:45] [INFO ] Deduced a trap composed of 107 places in 62 ms of which 7 ms to minimize.
At refinement iteration 4 (INCLUDED_ONLY) 0/130 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/130 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 12/142 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/142 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 77/219 variables, 35/42 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:46] [INFO ] Deduced a trap composed of 3 places in 93 ms of which 4 ms to minimize.
At refinement iteration 9 (INCLUDED_ONLY) 0/219 variables, 1/43 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/219 variables, 0/43 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 218/437 variables, 219/262 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (INCLUDED_ONLY) 0/437 variables, 38/300 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/437 variables, 0/300 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 5/442 variables, 5/305 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/442 variables, 2/307 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/442 variables, 0/307 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 0/442 variables, 0/307 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 442/442 variables, and 307 constraints, problems are : Problem set: 0 solved, 1 unsolved in 346 ms.
Refiners :[Positive P Invariants (semi-flows): 7/7 constraints, Generalized P Invariants (flows): 36/36 constraints, State Equation: 224/224 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 2/2 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 124/130 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/130 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/130 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 12/142 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/142 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 77/219 variables, 35/42 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/219 variables, 1/43 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/219 variables, 0/43 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 218/437 variables, 219/262 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/437 variables, 38/300 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/437 variables, 1/301 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:46] [INFO ] Deduced a trap composed of 6 places in 92 ms of which 6 ms to minimize.
At refinement iteration 14 (INCLUDED_ONLY) 0/437 variables, 1/302 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/437 variables, 0/302 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 5/442 variables, 5/307 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/442 variables, 2/309 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/442 variables, 0/309 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 0/442 variables, 0/309 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 442/442 variables, and 309 constraints, problems are : Problem set: 0 solved, 1 unsolved in 479 ms.
Refiners :[Positive P Invariants (semi-flows): 7/7 constraints, Generalized P Invariants (flows): 36/36 constraints, State Equation: 224/224 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 3/3 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 849ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 26 ms.
Support contains 1 out of 224 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 224/224 places, 218/218 transitions.
Applied a total of 0 rules in 4 ms. Remains 224 /224 variables (removed 0) and now considering 218/218 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 224/224 places, 218/218 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 224/224 places, 218/218 transitions.
Applied a total of 0 rules in 4 ms. Remains 224 /224 variables (removed 0) and now considering 218/218 (removed 0) transitions.
[2026-05-24 14:24:46] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:24:47] [INFO ] Implicit Places using invariants in 562 ms returned [43, 48, 69, 74, 94, 100, 121, 126, 146, 151, 172, 178]
[2026-05-24 14:24:47] [INFO ] Actually due to overlaps returned [48, 43]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 565 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 222/224 places, 218/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 222 transition count 217
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 221 transition count 217
Applied a total of 2 rules in 8 ms. Remains 221 /222 variables (removed 1) and now considering 217/218 (removed 1) transitions.
// Phase 1: matrix 217 rows 221 cols
[2026-05-24 14:24:47] [INFO ] Computed 41 invariants in 8 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:24:47] [INFO ] Implicit Places using invariants in 510 ms returned [66, 71, 91, 97, 118, 123, 143, 148, 169, 175]
[2026-05-24 14:24:47] [INFO ] Actually due to overlaps returned [71, 66]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 512 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 2 : 219/224 places, 217/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 219 transition count 216
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 218 transition count 216
Applied a total of 2 rules in 10 ms. Remains 218 /219 variables (removed 1) and now considering 216/217 (removed 1) transitions.
// Phase 1: matrix 216 rows 218 cols
[2026-05-24 14:24:47] [INFO ] Computed 39 invariants in 11 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:24:48] [INFO ] Implicit Places using invariants in 430 ms returned [88, 94, 115, 120, 140, 145, 166, 172]
[2026-05-24 14:24:48] [INFO ] Actually due to overlaps returned [94, 88]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 432 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 3 : 216/224 places, 216/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 216 transition count 215
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 215 transition count 215
Applied a total of 2 rules in 10 ms. Remains 215 /216 variables (removed 1) and now considering 215/216 (removed 1) transitions.
// Phase 1: matrix 215 rows 215 cols
[2026-05-24 14:24:48] [INFO ] Computed 37 invariants in 9 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:24:48] [INFO ] Implicit Places using invariants in 380 ms returned [112, 117, 137, 142, 163, 169]
[2026-05-24 14:24:48] [INFO ] Actually due to overlaps returned [117, 112]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 380 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 4 : 213/224 places, 215/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 213 transition count 214
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 212 transition count 214
Applied a total of 2 rules in 8 ms. Remains 212 /213 variables (removed 1) and now considering 214/215 (removed 1) transitions.
// Phase 1: matrix 214 rows 212 cols
[2026-05-24 14:24:48] [INFO ] Computed 35 invariants in 12 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:24:48] [INFO ] Implicit Places using invariants in 356 ms returned [134, 139, 160, 166]
[2026-05-24 14:24:48] [INFO ] Actually due to overlaps returned [139, 134]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 359 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 5 : 210/224 places, 214/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 210 transition count 213
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 209 transition count 213
Applied a total of 2 rules in 15 ms. Remains 209 /210 variables (removed 1) and now considering 213/214 (removed 1) transitions.
// Phase 1: matrix 213 rows 209 cols
[2026-05-24 14:24:49] [INFO ] Computed 33 invariants in 11 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:24:49] [INFO ] Implicit Places using invariants in 339 ms returned [157, 163]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 340 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 6 : 207/224 places, 213/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 207 transition count 212
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 206 transition count 212
Applied a total of 2 rules in 9 ms. Remains 206 /207 variables (removed 1) and now considering 212/213 (removed 1) transitions.
// Phase 1: matrix 212 rows 206 cols
[2026-05-24 14:24:49] [INFO ] Computed 31 invariants in 11 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:24:49] [INFO ] Implicit Places using invariants in 322 ms returned []
[2026-05-24 14:24:49] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:24:49] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:24:51] [INFO ] Implicit Places using invariants and state equation in 2086 ms returned []
Implicit Place search using SMT with State Equation took 2408 ms to find 0 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 7 : 206/224 places, 212/218 transitions.
Finished structural reductions in REACHABILITY mode , in 7 iterations and 5061 ms. Remains : 206/224 places, 212/218 transitions.
RANDOM walk for 40000 steps (5740 resets) in 57 ms. (689 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (3684 resets) in 43 ms. (909 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 803799 steps, run timeout after 3001 ms. (steps per millisecond=267 ) properties seen :0 out of 1
Probabilistic random walk after 803799 steps, saw 401988 distinct states, run finished after 3001 ms. (steps per millisecond=267 ) properties seen :0
[2026-05-24 14:24:54] [INFO ] Invariant cache hit.
[2026-05-24 14:24:54] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 125/131 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/131 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 20/151 variables, 5/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/151 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 50/201 variables, 17/29 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:54] [INFO ] Deduced a trap composed of 4 places in 77 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:55] [INFO ] Deduced a trap composed of 7 places in 80 ms of which 7 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/201 variables, 2/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/201 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 212/413 variables, 201/232 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/413 variables, 38/270 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (INCLUDED_ONLY) 0/413 variables, 0/270 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 5/418 variables, 5/275 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/418 variables, 2/277 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/418 variables, 0/277 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 0/418 variables, 0/277 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 418/418 variables, and 277 constraints, problems are : Problem set: 0 solved, 1 unsolved in 336 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 206/206 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 2/2 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 125/131 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/131 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 20/151 variables, 5/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/151 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 50/201 variables, 17/29 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/201 variables, 2/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:55] [INFO ] Deduced a trap composed of 10 places in 85 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:55] [INFO ] Deduced a trap composed of 15 places in 87 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:55] [INFO ] Deduced a trap composed of 16 places in 89 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:55] [INFO ] Deduced a trap composed of 50 places in 90 ms of which 16 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:55] [INFO ] Deduced a trap composed of 50 places in 87 ms of which 18 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:55] [INFO ] Deduced a trap composed of 50 places in 89 ms of which 16 ms to minimize.
At refinement iteration 9 (INCLUDED_ONLY) 0/201 variables, 6/37 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/201 variables, 0/37 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 212/413 variables, 201/238 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/413 variables, 38/276 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/413 variables, 1/277 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:56] [INFO ] Deduced a trap composed of 15 places in 60 ms of which 4 ms to minimize.
At refinement iteration 14 (INCLUDED_ONLY) 0/413 variables, 1/278 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:56] [INFO ] Deduced a trap along path composed of 5 places in 19 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:56] [INFO ] Deduced a trap along path composed of 8 places in 26 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:24:56] [INFO ] Deduced a trap along path composed of 8 places in 27 ms of which 1 ms to minimize.
At refinement iteration 15 (INCLUDED_ONLY) 0/413 variables, 3/281 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/413 variables, 0/281 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 5/418 variables, 5/286 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/418 variables, 2/288 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/418 variables, 0/288 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 0/418 variables, 0/288 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 418/418 variables, and 288 constraints, problems are : Problem set: 0 solved, 1 unsolved in 1234 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 206/206 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 9/9 constraints, Known Traps Along Path: 3/3 constraints]
After SMT, in 1576ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 98 ms.
Support contains 1 out of 206 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 206/206 places, 212/212 transitions.
Applied a total of 0 rules in 5 ms. Remains 206 /206 variables (removed 0) and now considering 212/212 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 206/206 places, 212/212 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 206/206 places, 212/212 transitions.
Applied a total of 0 rules in 3 ms. Remains 206 /206 variables (removed 0) and now considering 212/212 (removed 0) transitions.
[2026-05-24 14:24:56] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:24:56] [INFO ] Implicit Places using invariants in 306 ms returned []
[2026-05-24 14:24:56] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:24:56] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:24:58] [INFO ] Implicit Places using invariants and state equation in 2041 ms returned []
Implicit Place search using SMT with State Equation took 2349 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-24 14:24:58] [INFO ] Redundant transitions in 1 ms returned []
Running 211 sub problems to find dead transitions.
[2026-05-24 14:24:58] [INFO ] Invariant cache hit.
[2026-05-24 14:24:58] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/205 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/205 variables, 18/20 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/205 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 3 (OVERLAPS) 1/206 variables, 11/31 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 5 (OVERLAPS) 212/418 variables, 206/237 constraints. Problems are: Problem set: 0 solved, 211 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/418 variables, 38/275 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/418 variables, 0/275 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 8 (OVERLAPS) 0/418 variables, 0/275 constraints. Problems are: Problem set: 0 solved, 211 unsolved
No progress, stopping.
After SMT solving in domain Real declared 418/418 variables, and 275 constraints, problems are : Problem set: 0 solved, 211 unsolved in 13199 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 206/206 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 211/211 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 211 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/205 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/205 variables, 18/20 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/205 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 3 (OVERLAPS) 1/206 variables, 11/31 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 5 (OVERLAPS) 212/418 variables, 206/237 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/418 variables, 38/275 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/418 variables, 211/486 constraints. Problems are: Problem set: 0 solved, 211 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:23] [INFO ] Deduced a trap composed of 4 places in 84 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:24] [INFO ] Deduced a trap composed of 8 places in 84 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:25] [INFO ] Deduced a trap composed of 6 places in 62 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:25] [INFO ] Deduced a trap composed of 7 places in 70 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:26] [INFO ] Deduced a trap composed of 10 places in 63 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:26] [INFO ] Deduced a trap composed of 16 places in 57 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:27] [INFO ] Deduced a trap composed of 10 places in 67 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:30] [INFO ] Deduced a trap composed of 18 places in 53 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:30] [INFO ] Deduced a trap composed of 22 places in 49 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:30] [INFO ] Deduced a trap composed of 19 places in 51 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:31] [INFO ] Deduced a trap composed of 53 places in 99 ms of which 27 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:31] [INFO ] Deduced a trap composed of 53 places in 85 ms of which 20 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:31] [INFO ] Deduced a trap composed of 3 places in 53 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:32] [INFO ] Deduced a trap composed of 21 places in 53 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:32] [INFO ] Deduced a trap composed of 24 places in 46 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:32] [INFO ] Deduced a trap composed of 25 places in 49 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:32] [INFO ] Deduced a trap composed of 28 places in 56 ms of which 4 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/418 variables, 17/503 constraints. Problems are: Problem set: 0 solved, 211 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:39] [INFO ] Deduced a trap composed of 12 places in 54 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:41] [INFO ] Deduced a trap composed of 66 places in 81 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:41] [INFO ] Deduced a trap composed of 69 places in 68 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:41] [INFO ] Deduced a trap composed of 74 places in 81 ms of which 15 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:41] [INFO ] Deduced a trap composed of 77 places in 81 ms of which 18 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:41] [INFO ] Deduced a trap composed of 81 places in 81 ms of which 16 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 418/418 variables, and 509 constraints, problems are : Problem set: 0 solved, 211 unsolved in 30011 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 206/206 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 211/211 constraints, Known Traps: 23/23 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 43266ms problems are : Problem set: 0 solved, 211 unsolved
Search for dead transitions found 0 dead transitions in 43267ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 45625 ms. Remains : 206/206 places, 212/212 transitions.
Attempting over-approximation, by ignoring read arcs.
Performed 18 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 0 with 18 Pre rules applied. Total rules applied 0 place count 206 transition count 194
Deduced a syphon composed of 18 places in 0 ms
Reduce places removed 18 places and 0 transitions.
Iterating global reduction 0 with 36 rules applied. Total rules applied 36 place count 188 transition count 194
Discarding 9 places :
Symmetric choice reduction at 0 with 9 rule applications. Total rules 45 place count 179 transition count 185
Iterating global reduction 0 with 9 rules applied. Total rules applied 54 place count 179 transition count 185
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Deduced a syphon composed of 1 places in 1 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 0 with 2 rules applied. Total rules applied 56 place count 178 transition count 184
Free-agglomeration rule (complex) applied 2 times.
Iterating global reduction 0 with 2 rules applied. Total rules applied 58 place count 178 transition count 182
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 60 place count 176 transition count 182
Applied a total of 60 rules in 17 ms. Remains 176 /206 variables (removed 30) and now considering 182/212 (removed 30) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 182 rows 176 cols
[2026-05-24 14:25:42] [INFO ] Computed 31 invariants in 12 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-24 14:25:42] [INFO ] [Real]Absence check using 13 positive place invariants in 8 ms returned sat
[2026-05-24 14:25:42] [INFO ] [Real]Absence check using 13 positive and 18 generalized place invariants in 3 ms returned sat
[2026-05-24 14:25:42] [INFO ] After 69ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-24 14:25:42] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-24 14:25:42] [INFO ] After 26ms SMT Verify possible using 1 Read/Feed constraints in real domain returned unsat :0 sat :0 real:1
[2026-05-24 14:25:42] [INFO ] After 143ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-24 14:25:42] [INFO ] [Nat]Absence check using 13 positive place invariants in 7 ms returned sat
[2026-05-24 14:25:42] [INFO ] [Nat]Absence check using 13 positive and 18 generalized place invariants in 3 ms returned sat
[2026-05-24 14:25:42] [INFO ] After 89ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-24 14:25:42] [INFO ] After 15ms SMT Verify possible using 1 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-24 14:25:42] [INFO ] After 30ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-24 14:25:42] [INFO ] After 177ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
Over-approximation ignoring read arcs solved 0 properties in 352 ms.
RANDOM walk for 40000 steps (5773 resets) in 64 ms. (615 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (3647 resets) in 36 ms. (1081 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 774273 steps, run timeout after 3001 ms. (steps per millisecond=258 ) properties seen :0 out of 1
Probabilistic random walk after 774273 steps, saw 387223 distinct states, run finished after 3001 ms. (steps per millisecond=258 ) properties seen :0
// Phase 1: matrix 246 rows 252 cols
[2026-05-24 14:25:45] [INFO ] Computed 43 invariants in 14 ms
[2026-05-24 14:25:45] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 24/28 variables, 7/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/28 variables, 1/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/28 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 85/113 variables, 7/16 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/113 variables, 1/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/113 variables, 0/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 56/169 variables, 18/35 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:45] [INFO ] Deduced a trap composed of 3 places in 51 ms of which 3 ms to minimize.
At refinement iteration 10 (INCLUDED_ONLY) 0/169 variables, 1/36 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/169 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 43/212 variables, 5/41 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/212 variables, 0/41 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 28/240 variables, 9/50 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/240 variables, 0/50 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 219/459 variables, 214/264 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/459 variables, 23/287 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 18 (INCLUDED_ONLY) 0/459 variables, 0/287 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 32/491 variables, 23/310 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/491 variables, 2/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/491 variables, 1/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/491 variables, 0/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (OVERLAPS) 2/493 variables, 2/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (INCLUDED_ONLY) 0/493 variables, 2/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 25 (INCLUDED_ONLY) 0/493 variables, 0/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 26 (OVERLAPS) 5/498 variables, 4/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 27 (INCLUDED_ONLY) 0/498 variables, 1/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 28 (INCLUDED_ONLY) 0/498 variables, 0/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 29 (OVERLAPS) 0/498 variables, 0/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 498/498 variables, and 322 constraints, problems are : Problem set: 0 solved, 1 unsolved in 432 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/4 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/4 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 24/28 variables, 7/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/28 variables, 1/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/28 variables, 1/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/28 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 85/113 variables, 7/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/113 variables, 1/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/113 variables, 0/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 56/169 variables, 18/36 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/169 variables, 1/37 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/169 variables, 0/37 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 43/212 variables, 5/42 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/212 variables, 0/42 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 28/240 variables, 9/51 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/240 variables, 0/51 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 219/459 variables, 214/265 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/459 variables, 23/288 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/459 variables, 0/288 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 32/491 variables, 23/311 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/491 variables, 2/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/491 variables, 1/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (INCLUDED_ONLY) 0/491 variables, 0/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (OVERLAPS) 2/493 variables, 2/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 25 (INCLUDED_ONLY) 0/493 variables, 2/318 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 26 (INCLUDED_ONLY) 0/493 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 27 (OVERLAPS) 5/498 variables, 4/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 28 (INCLUDED_ONLY) 0/498 variables, 1/323 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:46] [INFO ] Deduced a trap composed of 8 places in 75 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:46] [INFO ] Deduced a trap composed of 19 places in 56 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:46] [INFO ] Deduced a trap composed of 19 places in 52 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:46] [INFO ] Deduced a trap composed of 16 places in 59 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:46] [INFO ] Deduced a trap composed of 13 places in 63 ms of which 5 ms to minimize.
At refinement iteration 29 (INCLUDED_ONLY) 0/498 variables, 5/328 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:46] [INFO ] Deduced a trap along path composed of 6 places in 30 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:46] [INFO ] Deduced a trap along path composed of 5 places in 26 ms of which 0 ms to minimize.
At refinement iteration 30 (INCLUDED_ONLY) 0/498 variables, 2/330 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 31 (INCLUDED_ONLY) 0/498 variables, 0/330 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 32 (OVERLAPS) 0/498 variables, 0/330 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 498/498 variables, and 330 constraints, problems are : Problem set: 0 solved, 1 unsolved in 813 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 6/6 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 1265ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 98 ms.
Support contains 1 out of 252 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 252/252 places, 246/246 transitions.
Graph (complete) has 834 edges and 252 vertex of which 251 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.0 ms
Discarding 1 places :
Also discarding 0 output 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 2 place count 251 transition count 245
Free-agglomeration rule (complex) applied 26 times.
Iterating global reduction 1 with 26 rules applied. Total rules applied 28 place count 251 transition count 219
Reduce places removed 26 places and 0 transitions.
Iterating post reduction 1 with 26 rules applied. Total rules applied 54 place count 225 transition count 219
Partial Free-agglomeration rule applied 25 times.
Drop transitions (Partial Free agglomeration) removed 25 transitions
Iterating global reduction 2 with 25 rules applied. Total rules applied 79 place count 225 transition count 219
Applied a total of 79 rules in 12 ms. Remains 225 /252 variables (removed 27) and now considering 219/246 (removed 27) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 12 ms. Remains : 225/252 places, 219/246 transitions.
RANDOM walk for 40000 steps (5730 resets) in 59 ms. (666 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (3632 resets) in 52 ms. (754 steps per ms) remains 1/1 properties
Probably explored full state space saw : 355343 states, properties seen :0
Probabilistic random walk after 710692 steps, saw 355343 distinct states, run finished after 2719 ms. (steps per millisecond=261 ) properties seen :0
Interrupted probabilistic random walk after 786257 steps, run timeout after 3048 ms. (steps per millisecond=257 ) properties seen :0 out of 1
Exhaustive walk after 786257 steps, saw 393217 distinct states, run finished after 3048 ms. (steps per millisecond=257 ) properties seen :0
// Phase 1: matrix 219 rows 225 cols
[2026-05-24 14:25:52] [INFO ] Computed 43 invariants in 16 ms
[2026-05-24 14:25:52] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 149/150 variables, 11/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/150 variables, 0/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 68/218 variables, 29/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:52] [INFO ] Deduced a trap composed of 4 places in 82 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:52] [INFO ] Deduced a trap composed of 6 places in 81 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:53] [INFO ] Deduced a trap composed of 7 places in 83 ms of which 7 ms to minimize.
At refinement iteration 4 (INCLUDED_ONLY) 0/218 variables, 3/43 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/218 variables, 0/43 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 2/220 variables, 1/44 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:53] [INFO ] Deduced a trap composed of 9 places in 82 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:53] [INFO ] Deduced a trap composed of 10 places in 90 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:53] [INFO ] Deduced a trap composed of 10 places in 81 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:53] [INFO ] Deduced a trap composed of 13 places in 75 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:53] [INFO ] Deduced a trap composed of 13 places in 64 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:53] [INFO ] Deduced a trap composed of 17 places in 66 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:53] [INFO ] Deduced a trap composed of 18 places in 63 ms of which 6 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/220 variables, 7/51 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/220 variables, 0/51 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 219/439 variables, 220/271 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/439 variables, 38/309 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/439 variables, 0/309 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 5/444 variables, 5/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/444 variables, 2/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/444 variables, 0/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 0/444 variables, 0/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 444/444 variables, and 316 constraints, problems are : Problem set: 0 solved, 1 unsolved in 1057 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 30/30 constraints, State Equation: 225/225 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 10/10 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 149/150 variables, 11/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/150 variables, 0/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 68/218 variables, 29/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/218 variables, 9/49 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/218 variables, 0/49 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 2/220 variables, 1/50 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/220 variables, 1/51 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/220 variables, 0/51 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 219/439 variables, 220/271 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/439 variables, 38/309 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/439 variables, 1/310 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:54] [INFO ] Deduced a trap composed of 19 places in 72 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:25:54] [INFO ] Deduced a trap composed of 16 places in 69 ms of which 7 ms to minimize.
At refinement iteration 12 (INCLUDED_ONLY) 0/439 variables, 2/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/439 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 5/444 variables, 5/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/444 variables, 2/319 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/444 variables, 0/319 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 0/444 variables, 0/319 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 444/444 variables, and 319 constraints, problems are : Problem set: 0 solved, 1 unsolved in 491 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 30/30 constraints, State Equation: 225/225 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 12/12 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 1570ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 88 ms.
Support contains 1 out of 225 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 225/225 places, 219/219 transitions.
Applied a total of 0 rules in 3 ms. Remains 225 /225 variables (removed 0) and now considering 219/219 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 225/225 places, 219/219 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 225/225 places, 219/219 transitions.
Applied a total of 0 rules in 3 ms. Remains 225 /225 variables (removed 0) and now considering 219/219 (removed 0) transitions.
[2026-05-24 14:25:54] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:25:54] [INFO ] Implicit Places using invariants in 555 ms returned [43, 48, 70, 75, 95, 101, 122, 127, 147, 152, 173, 179]
[2026-05-24 14:25:54] [INFO ] Actually due to overlaps returned [48, 43]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 557 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 223/225 places, 219/219 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 223 transition count 218
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 222 transition count 218
Applied a total of 2 rules in 15 ms. Remains 222 /223 variables (removed 1) and now considering 218/219 (removed 1) transitions.
// Phase 1: matrix 218 rows 222 cols
[2026-05-24 14:25:54] [INFO ] Computed 41 invariants in 17 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:25:55] [INFO ] Implicit Places using invariants in 481 ms returned [67, 72, 92, 98, 119, 124, 144, 149, 170, 176]
[2026-05-24 14:25:55] [INFO ] Actually due to overlaps returned [72, 67]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 482 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 2 : 220/225 places, 218/219 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 220 transition count 217
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 219 transition count 217
Applied a total of 2 rules in 10 ms. Remains 219 /220 variables (removed 1) and now considering 217/218 (removed 1) transitions.
// Phase 1: matrix 217 rows 219 cols
[2026-05-24 14:25:55] [INFO ] Computed 39 invariants in 14 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:25:55] [INFO ] Implicit Places using invariants in 448 ms returned [89, 95, 116, 121, 141, 146, 167, 173]
[2026-05-24 14:25:55] [INFO ] Actually due to overlaps returned [95, 89]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 450 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 3 : 217/225 places, 217/219 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 217 transition count 216
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 216 transition count 216
Applied a total of 2 rules in 9 ms. Remains 216 /217 variables (removed 1) and now considering 216/217 (removed 1) transitions.
// Phase 1: matrix 216 rows 216 cols
[2026-05-24 14:25:55] [INFO ] Computed 37 invariants in 11 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:25:56] [INFO ] Implicit Places using invariants in 365 ms returned [113, 118, 138, 143, 164, 170]
[2026-05-24 14:25:56] [INFO ] Actually due to overlaps returned [118, 113]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 366 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 4 : 214/225 places, 216/219 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 214 transition count 215
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 213 transition count 215
Applied a total of 2 rules in 10 ms. Remains 213 /214 variables (removed 1) and now considering 215/216 (removed 1) transitions.
// Phase 1: matrix 215 rows 213 cols
[2026-05-24 14:25:56] [INFO ] Computed 35 invariants in 15 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:25:56] [INFO ] Implicit Places using invariants in 380 ms returned [135, 140, 161, 167]
[2026-05-24 14:25:56] [INFO ] Actually due to overlaps returned [140, 135]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 382 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 5 : 211/225 places, 215/219 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 211 transition count 214
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 210 transition count 214
Applied a total of 2 rules in 20 ms. Remains 210 /211 variables (removed 1) and now considering 214/215 (removed 1) transitions.
// Phase 1: matrix 214 rows 210 cols
[2026-05-24 14:25:56] [INFO ] Computed 33 invariants in 10 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:25:56] [INFO ] Implicit Places using invariants in 311 ms returned [158, 164]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 314 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 6 : 208/225 places, 214/219 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 208 transition count 213
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 207 transition count 213
Applied a total of 2 rules in 6 ms. Remains 207 /208 variables (removed 1) and now considering 213/214 (removed 1) transitions.
// Phase 1: matrix 213 rows 207 cols
[2026-05-24 14:25:56] [INFO ] Computed 31 invariants in 13 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:25:57] [INFO ] Implicit Places using invariants in 312 ms returned []
[2026-05-24 14:25:57] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:25:57] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:25:58] [INFO ] Implicit Places using invariants and state equation in 1571 ms returned []
Implicit Place search using SMT with State Equation took 1883 ms to find 0 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 7 : 207/225 places, 213/219 transitions.
Finished structural reductions in REACHABILITY mode , in 7 iterations and 4507 ms. Remains : 207/225 places, 213/219 transitions.
RANDOM walk for 40000 steps (5832 resets) in 67 ms. (588 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40003 steps (3680 resets) in 41 ms. (952 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 798096 steps, run timeout after 3001 ms. (steps per millisecond=265 ) properties seen :0 out of 1
Probabilistic random walk after 798096 steps, saw 399140 distinct states, run finished after 3001 ms. (steps per millisecond=265 ) properties seen :0
[2026-05-24 14:26:01] [INFO ] Invariant cache hit.
[2026-05-24 14:26:01] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 147/148 variables, 11/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:02] [INFO ] Deduced a trap composed of 3 places in 61 ms of which 3 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/148 variables, 1/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/148 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 54/202 variables, 18/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:02] [INFO ] Deduced a trap composed of 4 places in 79 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:02] [INFO ] Deduced a trap composed of 7 places in 76 ms of which 5 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/202 variables, 2/32 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/202 variables, 0/32 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 213/415 variables, 202/234 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/415 variables, 38/272 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (INCLUDED_ONLY) 0/415 variables, 0/272 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 5/420 variables, 5/277 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/420 variables, 2/279 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/420 variables, 0/279 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 0/420 variables, 0/279 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 420/420 variables, and 279 constraints, problems are : Problem set: 0 solved, 1 unsolved in 456 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 207/207 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 3/3 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 147/148 variables, 11/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/148 variables, 1/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/148 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 54/202 variables, 18/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/202 variables, 2/32 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/202 variables, 0/32 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 213/415 variables, 202/234 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/415 variables, 38/272 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/415 variables, 1/273 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/415 variables, 0/273 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 5/420 variables, 5/278 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/420 variables, 2/280 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:02] [INFO ] Deduced a trap composed of 19 places in 57 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:02] [INFO ] Deduced a trap composed of 16 places in 56 ms of which 5 ms to minimize.
At refinement iteration 13 (INCLUDED_ONLY) 0/420 variables, 2/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:02] [INFO ] Deduced a trap along path composed of 4 places in 25 ms of which 1 ms to minimize.
At refinement iteration 14 (INCLUDED_ONLY) 0/420 variables, 1/283 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/420 variables, 0/283 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 0/420 variables, 0/283 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 420/420 variables, and 283 constraints, problems are : Problem set: 0 solved, 1 unsolved in 502 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 207/207 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 5/5 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 963ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 79 ms.
Support contains 1 out of 207 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 207/207 places, 213/213 transitions.
Applied a total of 0 rules in 3 ms. Remains 207 /207 variables (removed 0) and now considering 213/213 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 207/207 places, 213/213 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 207/207 places, 213/213 transitions.
Applied a total of 0 rules in 3 ms. Remains 207 /207 variables (removed 0) and now considering 213/213 (removed 0) transitions.
[2026-05-24 14:26:02] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:26:03] [INFO ] Implicit Places using invariants in 298 ms returned []
[2026-05-24 14:26:03] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:26:03] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:26:04] [INFO ] Implicit Places using invariants and state equation in 1579 ms returned []
Implicit Place search using SMT with State Equation took 1887 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-24 14:26:04] [INFO ] Redundant transitions in 3 ms returned []
Running 212 sub problems to find dead transitions.
[2026-05-24 14:26:04] [INFO ] Invariant cache hit.
[2026-05-24 14:26:04] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/206 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/206 variables, 18/20 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/206 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 3 (OVERLAPS) 1/207 variables, 11/31 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/207 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 5 (OVERLAPS) 213/420 variables, 207/238 constraints. Problems are: Problem set: 0 solved, 212 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/420 variables, 38/276 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/420 variables, 0/276 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 8 (OVERLAPS) 0/420 variables, 0/276 constraints. Problems are: Problem set: 0 solved, 212 unsolved
No progress, stopping.
After SMT solving in domain Real declared 420/420 variables, and 276 constraints, problems are : Problem set: 0 solved, 212 unsolved in 14220 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 207/207 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 212/212 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 212 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/206 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/206 variables, 18/20 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/206 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 3 (OVERLAPS) 1/207 variables, 11/31 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/207 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 5 (OVERLAPS) 213/420 variables, 207/238 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/420 variables, 38/276 constraints. Problems are: Problem set: 0 solved, 212 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/420 variables, 212/488 constraints. Problems are: Problem set: 0 solved, 212 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:29] [INFO ] Deduced a trap composed of 71 places in 73 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:31] [INFO ] Deduced a trap composed of 4 places in 70 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:31] [INFO ] Deduced a trap composed of 6 places in 71 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:32] [INFO ] Deduced a trap composed of 7 places in 74 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:32] [INFO ] Deduced a trap composed of 8 places in 70 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:33] [INFO ] Deduced a trap composed of 7 places in 65 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:34] [INFO ] Deduced a trap composed of 10 places in 84 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:34] [INFO ] Deduced a trap composed of 15 places in 89 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:34] [INFO ] Deduced a trap composed of 20 places in 92 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:35] [INFO ] Deduced a trap composed of 22 places in 88 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:35] [INFO ] Deduced a trap composed of 23 places in 81 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:35] [INFO ] Deduced a trap composed of 26 places in 94 ms of which 15 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:36] [INFO ] Deduced a trap composed of 16 places in 85 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:36] [INFO ] Deduced a trap composed of 19 places in 86 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:36] [INFO ] Deduced a trap composed of 28 places in 85 ms of which 16 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:36] [INFO ] Deduced a trap composed of 32 places in 92 ms of which 17 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:37] [INFO ] Deduced a trap composed of 26 places in 93 ms of which 15 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:37] [INFO ] Deduced a trap composed of 30 places in 89 ms of which 17 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:38] [INFO ] Deduced a trap composed of 19 places in 51 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:39] [INFO ] Deduced a trap composed of 56 places in 88 ms of which 16 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/420 variables, 20/508 constraints. Problems are: Problem set: 0 solved, 212 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 420/420 variables, and 508 constraints, problems are : Problem set: 0 solved, 212 unsolved in 30021 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 207/207 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 212/212 constraints, Known Traps: 20/20 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 44295ms problems are : Problem set: 0 solved, 212 unsolved
Search for dead transitions found 0 dead transitions in 44295ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 46192 ms. Remains : 207/207 places, 213/213 transitions.
Attempting over-approximation, by ignoring read arcs.
Performed 18 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 0 with 18 Pre rules applied. Total rules applied 0 place count 207 transition count 195
Deduced a syphon composed of 18 places in 0 ms
Reduce places removed 18 places and 0 transitions.
Iterating global reduction 0 with 36 rules applied. Total rules applied 36 place count 189 transition count 195
Discarding 9 places :
Symmetric choice reduction at 0 with 9 rule applications. Total rules 45 place count 180 transition count 186
Iterating global reduction 0 with 9 rules applied. Total rules applied 54 place count 180 transition count 186
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 0 with 2 rules applied. Total rules applied 56 place count 179 transition count 185
Free-agglomeration rule (complex) applied 2 times.
Iterating global reduction 0 with 2 rules applied. Total rules applied 58 place count 179 transition count 183
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 60 place count 177 transition count 183
Applied a total of 60 rules in 13 ms. Remains 177 /207 variables (removed 30) and now considering 183/213 (removed 30) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 183 rows 177 cols
[2026-05-24 14:26:49] [INFO ] Computed 31 invariants in 13 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-24 14:26:49] [INFO ] [Real]Absence check using 13 positive place invariants in 8 ms returned sat
[2026-05-24 14:26:49] [INFO ] [Real]Absence check using 13 positive and 18 generalized place invariants in 3 ms returned sat
[2026-05-24 14:26:49] [INFO ] After 96ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-24 14:26:49] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-24 14:26:49] [INFO ] After 9ms SMT Verify possible using 1 Read/Feed constraints in real domain returned unsat :0 sat :1
TRAPS : Iteration 0
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:49] [INFO ] Deduced a trap composed of 5 places in 66 ms of which 4 ms to minimize.
TRAPS : Iteration 1
[2026-05-24 14:26:49] [INFO ] After 98ms SMT Verify possible using trap constraints in real domain returned unsat :0 sat :0 real:1
[2026-05-24 14:26:49] [INFO ] After 241ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-24 14:26:49] [INFO ] [Nat]Absence check using 13 positive place invariants in 8 ms returned sat
[2026-05-24 14:26:49] [INFO ] [Nat]Absence check using 13 positive and 18 generalized place invariants in 3 ms returned sat
[2026-05-24 14:26:49] [INFO ] After 101ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-24 14:26:49] [INFO ] After 10ms SMT Verify possible using 1 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:49] [INFO ] Deduced a trap composed of 5 places in 65 ms of which 3 ms to minimize.
[2026-05-24 14:26:49] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 79 ms
TRAPS : Iteration 1
[2026-05-24 14:26:49] [INFO ] After 111ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-24 14:26:49] [INFO ] After 270ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
Over-approximation ignoring read arcs solved 0 properties in 539 ms.
RANDOM walk for 40000 steps (5696 resets) in 64 ms. (615 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (3646 resets) in 34 ms. (1142 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 771765 steps, run timeout after 3001 ms. (steps per millisecond=257 ) properties seen :0 out of 1
Probabilistic random walk after 771765 steps, saw 385967 distinct states, run finished after 3001 ms. (steps per millisecond=257 ) properties seen :0
// Phase 1: matrix 246 rows 252 cols
[2026-05-24 14:26:52] [INFO ] Computed 43 invariants in 15 ms
[2026-05-24 14:26:52] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 29/30 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/30 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 91/121 variables, 14/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/121 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 69/190 variables, 15/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:52] [INFO ] Deduced a trap composed of 3 places in 56 ms of which 3 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/190 variables, 1/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/190 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 28/218 variables, 9/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/218 variables, 0/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 236/454 variables, 218/258 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/454 variables, 24/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (INCLUDED_ONLY) 0/454 variables, 0/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 37/491 variables, 28/310 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/491 variables, 2/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/491 variables, 1/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/491 variables, 0/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 2/493 variables, 2/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/493 variables, 2/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/493 variables, 0/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 5/498 variables, 4/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/498 variables, 1/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/498 variables, 0/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (OVERLAPS) 0/498 variables, 0/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 498/498 variables, and 322 constraints, problems are : Problem set: 0 solved, 1 unsolved in 450 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 29/30 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/30 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 91/121 variables, 14/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/121 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 69/190 variables, 15/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/190 variables, 1/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/190 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 28/218 variables, 9/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/218 variables, 0/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 236/454 variables, 218/258 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/454 variables, 24/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/454 variables, 0/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 37/491 variables, 28/310 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/491 variables, 2/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/491 variables, 1/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/491 variables, 1/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:53] [INFO ] Deduced a trap composed of 4 places in 60 ms of which 3 ms to minimize.
At refinement iteration 17 (INCLUDED_ONLY) 0/491 variables, 1/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/491 variables, 0/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 2/493 variables, 2/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/493 variables, 2/319 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/493 variables, 0/319 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 5/498 variables, 4/323 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (INCLUDED_ONLY) 0/498 variables, 1/324 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (INCLUDED_ONLY) 0/498 variables, 0/324 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 25 (OVERLAPS) 0/498 variables, 0/324 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 498/498 variables, and 324 constraints, problems are : Problem set: 0 solved, 1 unsolved in 745 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 2/2 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 1215ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 49 ms.
Support contains 1 out of 252 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 252/252 places, 246/246 transitions.
Graph (complete) has 834 edges and 252 vertex of which 251 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.0 ms
Discarding 1 places :
Also discarding 0 output 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 2 place count 251 transition count 245
Free-agglomeration rule (complex) applied 27 times.
Iterating global reduction 1 with 27 rules applied. Total rules applied 29 place count 251 transition count 218
Reduce places removed 27 places and 0 transitions.
Iterating post reduction 1 with 27 rules applied. Total rules applied 56 place count 224 transition count 218
Partial Free-agglomeration rule applied 25 times.
Drop transitions (Partial Free agglomeration) removed 25 transitions
Iterating global reduction 2 with 25 rules applied. Total rules applied 81 place count 224 transition count 218
Applied a total of 81 rules in 11 ms. Remains 224 /252 variables (removed 28) and now considering 218/246 (removed 28) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 11 ms. Remains : 224/252 places, 218/246 transitions.
RANDOM walk for 40000 steps (5732 resets) in 76 ms. (519 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40001 steps (3673 resets) in 54 ms. (727 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 790804 steps, run timeout after 3001 ms. (steps per millisecond=263 ) properties seen :0 out of 1
Probabilistic random walk after 790804 steps, saw 395485 distinct states, run finished after 3001 ms. (steps per millisecond=263 ) properties seen :0
// Phase 1: matrix 218 rows 224 cols
[2026-05-24 14:26:57] [INFO ] Computed 43 invariants in 17 ms
[2026-05-24 14:26:57] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 84/85 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/85 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 53/138 variables, 2/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:57] [INFO ] Deduced a trap composed of 111 places in 60 ms of which 8 ms to minimize.
At refinement iteration 4 (INCLUDED_ONLY) 0/138 variables, 1/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/138 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 81/219 variables, 36/42 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:57] [INFO ] Deduced a trap composed of 3 places in 98 ms of which 5 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/219 variables, 1/43 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/219 variables, 0/43 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 218/437 variables, 219/262 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/437 variables, 38/300 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/437 variables, 0/300 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 5/442 variables, 5/305 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/442 variables, 2/307 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/442 variables, 0/307 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 0/442 variables, 0/307 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 442/442 variables, and 307 constraints, problems are : Problem set: 0 solved, 1 unsolved in 434 ms.
Refiners :[Positive P Invariants (semi-flows): 7/7 constraints, Generalized P Invariants (flows): 36/36 constraints, State Equation: 224/224 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 2/2 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 84/85 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/85 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 53/138 variables, 2/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/138 variables, 1/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/138 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 81/219 variables, 36/42 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/219 variables, 1/43 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:57] [INFO ] Deduced a trap composed of 4 places in 88 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:57] [INFO ] Deduced a trap composed of 6 places in 86 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:57] [INFO ] Deduced a trap composed of 7 places in 89 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:26:57] [INFO ] Deduced a trap composed of 7 places in 83 ms of which 6 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/219 variables, 4/47 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/219 variables, 0/47 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 218/437 variables, 219/266 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/437 variables, 38/304 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/437 variables, 1/305 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/437 variables, 0/305 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 5/442 variables, 5/310 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/442 variables, 2/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/442 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 0/442 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 442/442 variables, and 312 constraints, problems are : Problem set: 0 solved, 1 unsolved in 694 ms.
Refiners :[Positive P Invariants (semi-flows): 7/7 constraints, Generalized P Invariants (flows): 36/36 constraints, State Equation: 224/224 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 6/6 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 1149ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 45 ms.
Support contains 1 out of 224 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 224/224 places, 218/218 transitions.
Applied a total of 0 rules in 3 ms. Remains 224 /224 variables (removed 0) and now considering 218/218 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 224/224 places, 218/218 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 224/224 places, 218/218 transitions.
Applied a total of 0 rules in 4 ms. Remains 224 /224 variables (removed 0) and now considering 218/218 (removed 0) transitions.
[2026-05-24 14:26:58] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:26:58] [INFO ] Implicit Places using invariants in 567 ms returned [43, 48, 69, 74, 94, 100, 121, 126, 146, 151, 172, 178]
[2026-05-24 14:26:58] [INFO ] Actually due to overlaps returned [48, 43]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 568 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 222/224 places, 218/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 222 transition count 217
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 221 transition count 217
Applied a total of 2 rules in 11 ms. Remains 221 /222 variables (removed 1) and now considering 217/218 (removed 1) transitions.
// Phase 1: matrix 217 rows 221 cols
[2026-05-24 14:26:58] [INFO ] Computed 41 invariants in 12 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:26:59] [INFO ] Implicit Places using invariants in 477 ms returned [66, 71, 91, 97, 118, 123, 143, 148, 169, 175]
[2026-05-24 14:26:59] [INFO ] Actually due to overlaps returned [71, 66]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 478 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 2 : 219/224 places, 217/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 219 transition count 216
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 218 transition count 216
Applied a total of 2 rules in 10 ms. Remains 218 /219 variables (removed 1) and now considering 216/217 (removed 1) transitions.
// Phase 1: matrix 216 rows 218 cols
[2026-05-24 14:26:59] [INFO ] Computed 39 invariants in 13 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:26:59] [INFO ] Implicit Places using invariants in 408 ms returned [88, 94, 115, 120, 140, 145, 166, 172]
[2026-05-24 14:26:59] [INFO ] Actually due to overlaps returned [94, 88]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 409 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 3 : 216/224 places, 216/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 216 transition count 215
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 215 transition count 215
Applied a total of 2 rules in 11 ms. Remains 215 /216 variables (removed 1) and now considering 215/216 (removed 1) transitions.
// Phase 1: matrix 215 rows 215 cols
[2026-05-24 14:26:59] [INFO ] Computed 37 invariants in 14 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:27:00] [INFO ] Implicit Places using invariants in 391 ms returned [112, 117, 137, 142, 163, 169]
[2026-05-24 14:27:00] [INFO ] Actually due to overlaps returned [117, 112]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 394 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 4 : 213/224 places, 215/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 213 transition count 214
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 212 transition count 214
Applied a total of 2 rules in 8 ms. Remains 212 /213 variables (removed 1) and now considering 214/215 (removed 1) transitions.
// Phase 1: matrix 214 rows 212 cols
[2026-05-24 14:27:00] [INFO ] Computed 35 invariants in 12 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:27:00] [INFO ] Implicit Places using invariants in 340 ms returned [134, 139, 160, 166]
[2026-05-24 14:27:00] [INFO ] Actually due to overlaps returned [139, 134]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 342 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 5 : 210/224 places, 214/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 210 transition count 213
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 209 transition count 213
Applied a total of 2 rules in 10 ms. Remains 209 /210 variables (removed 1) and now considering 213/214 (removed 1) transitions.
// Phase 1: matrix 213 rows 209 cols
[2026-05-24 14:27:00] [INFO ] Computed 33 invariants in 15 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:27:00] [INFO ] Implicit Places using invariants in 328 ms returned [157, 163]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 329 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 6 : 207/224 places, 213/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 207 transition count 212
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 206 transition count 212
Applied a total of 2 rules in 9 ms. Remains 206 /207 variables (removed 1) and now considering 212/213 (removed 1) transitions.
// Phase 1: matrix 212 rows 206 cols
[2026-05-24 14:27:00] [INFO ] Computed 31 invariants in 15 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:27:01] [INFO ] Implicit Places using invariants in 302 ms returned []
[2026-05-24 14:27:01] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:27:01] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:27:03] [INFO ] Implicit Places using invariants and state equation in 1960 ms returned []
Implicit Place search using SMT with State Equation took 2263 ms to find 0 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 7 : 206/224 places, 212/218 transitions.
Finished structural reductions in REACHABILITY mode , in 7 iterations and 4847 ms. Remains : 206/224 places, 212/218 transitions.
RANDOM walk for 40000 steps (5851 resets) in 67 ms. (588 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (3660 resets) in 37 ms. (1052 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 795828 steps, run timeout after 3001 ms. (steps per millisecond=265 ) properties seen :0 out of 1
Probabilistic random walk after 795828 steps, saw 398003 distinct states, run finished after 3001 ms. (steps per millisecond=265 ) properties seen :0
[2026-05-24 14:27:06] [INFO ] Invariant cache hit.
[2026-05-24 14:27:06] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 86/87 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/87 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 60/147 variables, 6/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/147 variables, 0/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 54/201 variables, 18/29 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:06] [INFO ] Deduced a trap composed of 4 places in 89 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:06] [INFO ] Deduced a trap composed of 7 places in 85 ms of which 7 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/201 variables, 2/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/201 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 212/413 variables, 201/232 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (INCLUDED_ONLY) 0/413 variables, 38/270 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/413 variables, 0/270 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 5/418 variables, 5/275 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/418 variables, 2/277 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/418 variables, 0/277 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 0/418 variables, 0/277 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 418/418 variables, and 277 constraints, problems are : Problem set: 0 solved, 1 unsolved in 398 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 206/206 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 2/2 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 86/87 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/87 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 60/147 variables, 6/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/147 variables, 0/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 54/201 variables, 18/29 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/201 variables, 2/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/201 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 212/413 variables, 201/232 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/413 variables, 38/270 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/413 variables, 1/271 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:06] [INFO ] Deduced a trap along path composed of 4 places in 26 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:06] [INFO ] Deduced a trap along path composed of 8 places in 20 ms of which 1 ms to minimize.
At refinement iteration 11 (INCLUDED_ONLY) 0/413 variables, 2/273 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/413 variables, 0/273 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 5/418 variables, 5/278 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/418 variables, 2/280 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/418 variables, 0/280 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 0/418 variables, 0/280 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 418/418 variables, and 280 constraints, problems are : Problem set: 0 solved, 1 unsolved in 414 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 206/206 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 2/2 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 819ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 48 ms.
Support contains 1 out of 206 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 206/206 places, 212/212 transitions.
Applied a total of 0 rules in 3 ms. Remains 206 /206 variables (removed 0) and now considering 212/212 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 206/206 places, 212/212 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 206/206 places, 212/212 transitions.
Applied a total of 0 rules in 3 ms. Remains 206 /206 variables (removed 0) and now considering 212/212 (removed 0) transitions.
[2026-05-24 14:27:06] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:27:07] [INFO ] Implicit Places using invariants in 305 ms returned []
[2026-05-24 14:27:07] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:27:07] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:27:09] [INFO ] Implicit Places using invariants and state equation in 1943 ms returned []
Implicit Place search using SMT with State Equation took 2250 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-24 14:27:09] [INFO ] Redundant transitions in 2 ms returned []
Running 211 sub problems to find dead transitions.
[2026-05-24 14:27:09] [INFO ] Invariant cache hit.
[2026-05-24 14:27:09] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/205 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/205 variables, 18/20 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/205 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 3 (OVERLAPS) 1/206 variables, 11/31 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 5 (OVERLAPS) 212/418 variables, 206/237 constraints. Problems are: Problem set: 0 solved, 211 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/418 variables, 38/275 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/418 variables, 0/275 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 8 (OVERLAPS) 0/418 variables, 0/275 constraints. Problems are: Problem set: 0 solved, 211 unsolved
No progress, stopping.
After SMT solving in domain Real declared 418/418 variables, and 275 constraints, problems are : Problem set: 0 solved, 211 unsolved in 13400 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 206/206 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 211/211 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 211 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/205 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/205 variables, 18/20 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/205 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 3 (OVERLAPS) 1/206 variables, 11/31 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 5 (OVERLAPS) 212/418 variables, 206/237 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/418 variables, 38/275 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/418 variables, 211/486 constraints. Problems are: Problem set: 0 solved, 211 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:34] [INFO ] Deduced a trap composed of 4 places in 90 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:34] [INFO ] Deduced a trap composed of 8 places in 80 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:36] [INFO ] Deduced a trap composed of 6 places in 63 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:36] [INFO ] Deduced a trap composed of 7 places in 67 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:37] [INFO ] Deduced a trap composed of 10 places in 58 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:37] [INFO ] Deduced a trap composed of 16 places in 54 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:37] [INFO ] Deduced a trap composed of 10 places in 80 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:41] [INFO ] Deduced a trap composed of 18 places in 54 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:41] [INFO ] Deduced a trap composed of 22 places in 54 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:41] [INFO ] Deduced a trap composed of 19 places in 53 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:41] [INFO ] Deduced a trap composed of 53 places in 93 ms of which 27 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:41] [INFO ] Deduced a trap composed of 53 places in 94 ms of which 20 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:42] [INFO ] Deduced a trap composed of 3 places in 66 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:43] [INFO ] Deduced a trap composed of 21 places in 44 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:43] [INFO ] Deduced a trap composed of 24 places in 48 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:43] [INFO ] Deduced a trap composed of 25 places in 48 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:43] [INFO ] Deduced a trap composed of 28 places in 42 ms of which 3 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/418 variables, 17/503 constraints. Problems are: Problem set: 0 solved, 211 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:49] [INFO ] Deduced a trap composed of 12 places in 52 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:51] [INFO ] Deduced a trap composed of 66 places in 77 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:51] [INFO ] Deduced a trap composed of 69 places in 75 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:52] [INFO ] Deduced a trap composed of 74 places in 83 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:52] [INFO ] Deduced a trap composed of 77 places in 87 ms of which 18 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:52] [INFO ] Deduced a trap composed of 81 places in 77 ms of which 17 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 418/418 variables, and 509 constraints, problems are : Problem set: 0 solved, 211 unsolved in 30014 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 206/206 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 211/211 constraints, Known Traps: 23/23 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 43470ms problems are : Problem set: 0 solved, 211 unsolved
Search for dead transitions found 0 dead transitions in 43472ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 45733 ms. Remains : 206/206 places, 212/212 transitions.
Attempting over-approximation, by ignoring read arcs.
Performed 18 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 0 with 18 Pre rules applied. Total rules applied 0 place count 206 transition count 194
Deduced a syphon composed of 18 places in 1 ms
Reduce places removed 18 places and 0 transitions.
Iterating global reduction 0 with 36 rules applied. Total rules applied 36 place count 188 transition count 194
Discarding 9 places :
Symmetric choice reduction at 0 with 9 rule applications. Total rules 45 place count 179 transition count 185
Iterating global reduction 0 with 9 rules applied. Total rules applied 54 place count 179 transition count 185
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 0 with 2 rules applied. Total rules applied 56 place count 178 transition count 184
Free-agglomeration rule (complex) applied 2 times.
Iterating global reduction 0 with 2 rules applied. Total rules applied 58 place count 178 transition count 182
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 60 place count 176 transition count 182
Applied a total of 60 rules in 11 ms. Remains 176 /206 variables (removed 30) and now considering 182/212 (removed 30) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 182 rows 176 cols
[2026-05-24 14:27:52] [INFO ] Computed 31 invariants in 14 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-24 14:27:52] [INFO ] [Real]Absence check using 13 positive place invariants in 6 ms returned sat
[2026-05-24 14:27:52] [INFO ] [Real]Absence check using 13 positive and 18 generalized place invariants in 2 ms returned sat
[2026-05-24 14:27:52] [INFO ] After 74ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-24 14:27:52] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-24 14:27:52] [INFO ] After 15ms SMT Verify possible using 1 Read/Feed constraints in real domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-24 14:27:52] [INFO ] After 29ms SMT Verify possible using trap constraints in real domain returned unsat :0 sat :1
[2026-05-24 14:27:52] [INFO ] After 150ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :1
Over-approximation ignoring read arcs solved 0 properties in 178 ms.
RANDOM walk for 40000 steps (5833 resets) in 68 ms. (579 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40001 steps (3694 resets) in 63 ms. (625 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 788604 steps, run timeout after 3001 ms. (steps per millisecond=262 ) properties seen :0 out of 1
Probabilistic random walk after 788604 steps, saw 394385 distinct states, run finished after 3001 ms. (steps per millisecond=262 ) properties seen :0
// Phase 1: matrix 246 rows 252 cols
[2026-05-24 14:27:55] [INFO ] Computed 43 invariants in 28 ms
[2026-05-24 14:27:55] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 29/30 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/30 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 91/121 variables, 14/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/121 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 69/190 variables, 15/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/190 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 28/218 variables, 9/39 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/218 variables, 0/39 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (OVERLAPS) 236/454 variables, 218/257 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/454 variables, 24/281 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/454 variables, 0/281 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 37/491 variables, 28/309 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/491 variables, 2/311 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/491 variables, 1/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/491 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 2/493 variables, 2/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/493 variables, 2/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/493 variables, 0/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 5/498 variables, 4/320 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/498 variables, 1/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/498 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 0/498 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 498/498 variables, and 321 constraints, problems are : Problem set: 0 solved, 1 unsolved in 387 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 29/30 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/30 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 91/121 variables, 14/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/121 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 69/190 variables, 15/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/190 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 28/218 variables, 9/39 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/218 variables, 0/39 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 236/454 variables, 218/257 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/454 variables, 24/281 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/454 variables, 0/281 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 37/491 variables, 28/309 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/491 variables, 2/311 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/491 variables, 1/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/491 variables, 1/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:56] [INFO ] Deduced a trap composed of 4 places in 60 ms of which 4 ms to minimize.
At refinement iteration 16 (INCLUDED_ONLY) 0/491 variables, 1/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:56] [INFO ] Deduced a trap along path composed of 9 places in 31 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:57] [INFO ] Deduced a trap along path composed of 4 places in 28 ms of which 1 ms to minimize.
At refinement iteration 17 (INCLUDED_ONLY) 0/491 variables, 2/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/491 variables, 0/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 2/493 variables, 2/318 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/493 variables, 2/320 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/493 variables, 0/320 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 5/498 variables, 4/324 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (INCLUDED_ONLY) 0/498 variables, 1/325 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:57] [INFO ] Deduced a trap composed of 9 places in 77 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:57] [INFO ] Deduced a trap composed of 8 places in 68 ms of which 5 ms to minimize.
At refinement iteration 24 (INCLUDED_ONLY) 0/498 variables, 2/327 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:57] [INFO ] Deduced a trap along path composed of 8 places in 37 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:57] [INFO ] Deduced a trap along path composed of 11 places in 34 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:57] [INFO ] Deduced a trap along path composed of 4 places in 40 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:58] [INFO ] Deduced a trap along path composed of 4 places in 32 ms of which 0 ms to minimize.
At refinement iteration 25 (INCLUDED_ONLY) 0/498 variables, 4/331 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:58] [INFO ] Deduced a trap composed of 21 places in 57 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:58] [INFO ] Deduced a trap composed of 28 places in 47 ms of which 2 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:58] [INFO ] Deduced a trap composed of 32 places in 50 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:27:58] [INFO ] Deduced a trap composed of 26 places in 50 ms of which 5 ms to minimize.
At refinement iteration 26 (INCLUDED_ONLY) 0/498 variables, 4/335 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 27 (INCLUDED_ONLY) 0/498 variables, 0/335 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 28 (OVERLAPS) 0/498 variables, 0/335 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 498/498 variables, and 335 constraints, problems are : Problem set: 0 solved, 1 unsolved in 2143 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 7/7 constraints, Known Traps Along Path: 6/6 constraints]
After SMT, in 2565ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 515 ms.
Support contains 1 out of 252 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 252/252 places, 246/246 transitions.
Graph (complete) has 834 edges and 252 vertex of which 251 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.1 ms
Discarding 1 places :
Also discarding 0 output 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 2 place count 251 transition count 245
Free-agglomeration rule (complex) applied 27 times.
Iterating global reduction 1 with 27 rules applied. Total rules applied 29 place count 251 transition count 218
Reduce places removed 27 places and 0 transitions.
Iterating post reduction 1 with 27 rules applied. Total rules applied 56 place count 224 transition count 218
Partial Free-agglomeration rule applied 24 times.
Drop transitions (Partial Free agglomeration) removed 24 transitions
Iterating global reduction 2 with 24 rules applied. Total rules applied 80 place count 224 transition count 218
Applied a total of 80 rules in 20 ms. Remains 224 /252 variables (removed 28) and now considering 218/246 (removed 28) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21 ms. Remains : 224/252 places, 218/246 transitions.
RANDOM walk for 40000 steps (5730 resets) in 55 ms. (714 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40001 steps (3727 resets) in 37 ms. (1052 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 803976 steps, run timeout after 3001 ms. (steps per millisecond=267 ) properties seen :0 out of 1
Probabilistic random walk after 803976 steps, saw 402081 distinct states, run finished after 3001 ms. (steps per millisecond=267 ) properties seen :0
// Phase 1: matrix 218 rows 224 cols
[2026-05-24 14:28:02] [INFO ] Computed 43 invariants in 15 ms
[2026-05-24 14:28:02] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 125/126 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/126 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 12/138 variables, 3/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/138 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 81/219 variables, 36/41 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:02] [INFO ] Deduced a trap composed of 3 places in 98 ms of which 5 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/219 variables, 1/42 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/219 variables, 0/42 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 218/437 variables, 219/261 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (INCLUDED_ONLY) 0/437 variables, 38/299 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/437 variables, 0/299 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 5/442 variables, 5/304 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/442 variables, 2/306 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/442 variables, 0/306 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 0/442 variables, 0/306 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 442/442 variables, and 306 constraints, problems are : Problem set: 0 solved, 1 unsolved in 425 ms.
Refiners :[Positive P Invariants (semi-flows): 7/7 constraints, Generalized P Invariants (flows): 36/36 constraints, State Equation: 224/224 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 125/126 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/126 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 12/138 variables, 3/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/138 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 81/219 variables, 36/41 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/219 variables, 1/42 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:02] [INFO ] Deduced a trap composed of 4 places in 97 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:02] [INFO ] Deduced a trap composed of 6 places in 106 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:02] [INFO ] Deduced a trap composed of 7 places in 97 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:02] [INFO ] Deduced a trap composed of 9 places in 93 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:03] [INFO ] Deduced a trap composed of 10 places in 95 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:03] [INFO ] Deduced a trap composed of 10 places in 92 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:03] [INFO ] Deduced a trap composed of 13 places in 93 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:03] [INFO ] Deduced a trap composed of 15 places in 92 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:03] [INFO ] Deduced a trap composed of 16 places in 97 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:03] [INFO ] Deduced a trap composed of 17 places in 97 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:03] [INFO ] Deduced a trap composed of 19 places in 91 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:03] [INFO ] Deduced a trap composed of 19 places in 96 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:03] [INFO ] Deduced a trap composed of 22 places in 93 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:04] [INFO ] Deduced a trap composed of 24 places in 96 ms of which 16 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:04] [INFO ] Deduced a trap composed of 25 places in 94 ms of which 16 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:04] [INFO ] Deduced a trap composed of 27 places in 103 ms of which 19 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:04] [INFO ] Deduced a trap composed of 28 places in 100 ms of which 20 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:04] [INFO ] Deduced a trap composed of 35 places in 109 ms of which 28 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:04] [INFO ] Deduced a trap composed of 42 places in 163 ms of which 81 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:04] [INFO ] Deduced a trap composed of 21 places in 90 ms of which 13 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/219 variables, 20/62 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:04] [INFO ] Deduced a trap composed of 22 places in 90 ms of which 16 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:04] [INFO ] Deduced a trap composed of 18 places in 94 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:05] [INFO ] Deduced a trap composed of 44 places in 119 ms of which 36 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:05] [INFO ] Deduced a trap composed of 26 places in 97 ms of which 17 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:05] [INFO ] Deduced a trap composed of 47 places in 130 ms of which 49 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:05] [INFO ] Deduced a trap composed of 47 places in 124 ms of which 36 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:05] [INFO ] Deduced a trap composed of 48 places in 138 ms of which 62 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:05] [INFO ] Deduced a trap composed of 47 places in 109 ms of which 25 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:05] [INFO ] Deduced a trap composed of 48 places in 104 ms of which 27 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:05] [INFO ] Deduced a trap composed of 30 places in 104 ms of which 22 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:06] [INFO ] Deduced a trap composed of 36 places in 124 ms of which 43 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:06] [INFO ] Deduced a trap composed of 42 places in 117 ms of which 42 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:06] [INFO ] Deduced a trap composed of 46 places in 103 ms of which 30 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:06] [INFO ] Deduced a trap composed of 48 places in 124 ms of which 37 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:06] [INFO ] Deduced a trap composed of 49 places in 128 ms of which 48 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:06] [INFO ] Deduced a trap composed of 45 places in 122 ms of which 45 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:06] [INFO ] Deduced a trap composed of 48 places in 119 ms of which 37 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:06] [INFO ] Deduced a trap composed of 48 places in 115 ms of which 35 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:07] [INFO ] Deduced a trap composed of 49 places in 112 ms of which 35 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:07] [INFO ] Deduced a trap composed of 42 places in 260 ms of which 174 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/219 variables, 20/82 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:07] [INFO ] Deduced a trap composed of 42 places in 150 ms of which 68 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:07] [INFO ] Deduced a trap composed of 16 places in 90 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:07] [INFO ] Deduced a trap composed of 12 places in 91 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:07] [INFO ] Deduced a trap composed of 42 places in 118 ms of which 37 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:07] [INFO ] Deduced a trap composed of 43 places in 135 ms of which 36 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:08] [INFO ] Deduced a trap composed of 43 places in 126 ms of which 40 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:08] [INFO ] Deduced a trap composed of 44 places in 123 ms of which 38 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:08] [INFO ] Deduced a trap composed of 44 places in 123 ms of which 42 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:08] [INFO ] Deduced a trap composed of 44 places in 111 ms of which 30 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:08] [INFO ] Deduced a trap composed of 45 places in 127 ms of which 44 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:08] [INFO ] Deduced a trap composed of 45 places in 112 ms of which 32 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:08] [INFO ] Deduced a trap composed of 45 places in 110 ms of which 30 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:08] [INFO ] Deduced a trap composed of 43 places in 110 ms of which 28 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:09] [INFO ] Deduced a trap composed of 44 places in 112 ms of which 29 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:09] [INFO ] Deduced a trap composed of 45 places in 110 ms of which 26 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:09] [INFO ] Deduced a trap composed of 45 places in 121 ms of which 26 ms to minimize.
At refinement iteration 9 (INCLUDED_ONLY) 0/219 variables, 16/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/219 variables, 0/98 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 218/437 variables, 219/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/437 variables, 38/355 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/437 variables, 1/356 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:09] [INFO ] Deduced a trap along path composed of 6 places in 31 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:09] [INFO ] Deduced a trap along path composed of 5 places in 19 ms of which 1 ms to minimize.
At refinement iteration 14 (INCLUDED_ONLY) 0/437 variables, 2/358 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/437 variables, 0/358 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 5/442 variables, 5/363 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/442 variables, 2/365 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/442 variables, 0/365 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 0/442 variables, 0/365 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 442/442 variables, and 365 constraints, problems are : Problem set: 0 solved, 1 unsolved in 7614 ms.
Refiners :[Positive P Invariants (semi-flows): 7/7 constraints, Generalized P Invariants (flows): 36/36 constraints, State Equation: 224/224 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 57/57 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 8063ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 57 ms.
Support contains 1 out of 224 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 224/224 places, 218/218 transitions.
Applied a total of 0 rules in 4 ms. Remains 224 /224 variables (removed 0) and now considering 218/218 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 224/224 places, 218/218 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 224/224 places, 218/218 transitions.
Applied a total of 0 rules in 3 ms. Remains 224 /224 variables (removed 0) and now considering 218/218 (removed 0) transitions.
[2026-05-24 14:28:10] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:28:10] [INFO ] Implicit Places using invariants in 567 ms returned [43, 48, 69, 74, 94, 100, 121, 126, 146, 151, 172, 178]
[2026-05-24 14:28:10] [INFO ] Actually due to overlaps returned [48, 43]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 569 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 222/224 places, 218/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 222 transition count 217
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 221 transition count 217
Applied a total of 2 rules in 9 ms. Remains 221 /222 variables (removed 1) and now considering 217/218 (removed 1) transitions.
// Phase 1: matrix 217 rows 221 cols
[2026-05-24 14:28:10] [INFO ] Computed 41 invariants in 14 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:28:11] [INFO ] Implicit Places using invariants in 482 ms returned [66, 71, 91, 97, 118, 123, 143, 148, 169, 175]
[2026-05-24 14:28:11] [INFO ] Actually due to overlaps returned [71, 66]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 483 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 2 : 219/224 places, 217/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 219 transition count 216
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 218 transition count 216
Applied a total of 2 rules in 10 ms. Remains 218 /219 variables (removed 1) and now considering 216/217 (removed 1) transitions.
// Phase 1: matrix 216 rows 218 cols
[2026-05-24 14:28:11] [INFO ] Computed 39 invariants in 10 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:28:11] [INFO ] Implicit Places using invariants in 423 ms returned [88, 94, 115, 120, 140, 145, 166, 172]
[2026-05-24 14:28:11] [INFO ] Actually due to overlaps returned [94, 88]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 424 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 3 : 216/224 places, 216/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 216 transition count 215
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 215 transition count 215
Applied a total of 2 rules in 12 ms. Remains 215 /216 variables (removed 1) and now considering 215/216 (removed 1) transitions.
// Phase 1: matrix 215 rows 215 cols
[2026-05-24 14:28:11] [INFO ] Computed 37 invariants in 14 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:28:12] [INFO ] Implicit Places using invariants in 377 ms returned [112, 117, 137, 142, 163, 169]
[2026-05-24 14:28:12] [INFO ] Actually due to overlaps returned [117, 112]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 379 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 4 : 213/224 places, 215/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 213 transition count 214
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 212 transition count 214
Applied a total of 2 rules in 10 ms. Remains 212 /213 variables (removed 1) and now considering 214/215 (removed 1) transitions.
// Phase 1: matrix 214 rows 212 cols
[2026-05-24 14:28:12] [INFO ] Computed 35 invariants in 8 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:28:12] [INFO ] Implicit Places using invariants in 345 ms returned [134, 139, 160, 166]
[2026-05-24 14:28:12] [INFO ] Actually due to overlaps returned [139, 134]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 346 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 5 : 210/224 places, 214/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 210 transition count 213
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 209 transition count 213
Applied a total of 2 rules in 10 ms. Remains 209 /210 variables (removed 1) and now considering 213/214 (removed 1) transitions.
// Phase 1: matrix 213 rows 209 cols
[2026-05-24 14:28:12] [INFO ] Computed 33 invariants in 12 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:28:12] [INFO ] Implicit Places using invariants in 328 ms returned [157, 163]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 328 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 6 : 207/224 places, 213/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 207 transition count 212
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 206 transition count 212
Applied a total of 2 rules in 9 ms. Remains 206 /207 variables (removed 1) and now considering 212/213 (removed 1) transitions.
// Phase 1: matrix 212 rows 206 cols
[2026-05-24 14:28:12] [INFO ] Computed 31 invariants in 13 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:28:13] [INFO ] Implicit Places using invariants in 306 ms returned []
[2026-05-24 14:28:13] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:28:13] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:28:15] [INFO ] Implicit Places using invariants and state equation in 2506 ms returned []
Implicit Place search using SMT with State Equation took 2813 ms to find 0 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 7 : 206/224 places, 212/218 transitions.
Finished structural reductions in REACHABILITY mode , in 7 iterations and 5409 ms. Remains : 206/224 places, 212/218 transitions.
RANDOM walk for 40000 steps (5737 resets) in 56 ms. (701 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (3627 resets) in 34 ms. (1142 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 791868 steps, run timeout after 3001 ms. (steps per millisecond=263 ) properties seen :0 out of 1
Probabilistic random walk after 791868 steps, saw 396015 distinct states, run finished after 3001 ms. (steps per millisecond=263 ) properties seen :0
[2026-05-24 14:28:18] [INFO ] Invariant cache hit.
[2026-05-24 14:28:18] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 126/127 variables, 6/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/127 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 20/147 variables, 5/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:18] [INFO ] Deduced a trap composed of 69 places in 74 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:18] [INFO ] Deduced a trap composed of 69 places in 73 ms of which 13 ms to minimize.
At refinement iteration 4 (INCLUDED_ONLY) 0/147 variables, 2/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/147 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 54/201 variables, 18/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/201 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 212/413 variables, 201/232 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/413 variables, 38/270 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:19] [INFO ] Deduced a trap composed of 15 places in 90 ms of which 10 ms to minimize.
At refinement iteration 10 (INCLUDED_ONLY) 0/413 variables, 1/271 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/413 variables, 0/271 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 5/418 variables, 5/276 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/418 variables, 2/278 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/418 variables, 0/278 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 0/418 variables, 0/278 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 418/418 variables, and 278 constraints, problems are : Problem set: 0 solved, 1 unsolved in 556 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 206/206 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 3/3 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 126/127 variables, 6/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/127 variables, 0/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 20/147 variables, 5/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/147 variables, 2/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/147 variables, 0/13 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 54/201 variables, 18/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/201 variables, 1/32 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:19] [INFO ] Deduced a trap composed of 3 places in 82 ms of which 4 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/201 variables, 1/33 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/201 variables, 0/33 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 212/413 variables, 201/234 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/413 variables, 38/272 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/413 variables, 1/273 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:19] [INFO ] Deduced a trap composed of 16 places in 57 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:19] [INFO ] Deduced a trap composed of 13 places in 69 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:19] [INFO ] Deduced a trap composed of 10 places in 55 ms of which 5 ms to minimize.
At refinement iteration 13 (INCLUDED_ONLY) 0/413 variables, 3/276 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/413 variables, 0/276 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 5/418 variables, 5/281 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/418 variables, 2/283 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/418 variables, 0/283 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 0/418 variables, 0/283 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 418/418 variables, and 283 constraints, problems are : Problem set: 0 solved, 1 unsolved in 698 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 206/206 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 7/7 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 1263ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 63 ms.
Support contains 1 out of 206 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 206/206 places, 212/212 transitions.
Applied a total of 0 rules in 3 ms. Remains 206 /206 variables (removed 0) and now considering 212/212 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 206/206 places, 212/212 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 206/206 places, 212/212 transitions.
Applied a total of 0 rules in 3 ms. Remains 206 /206 variables (removed 0) and now considering 212/212 (removed 0) transitions.
[2026-05-24 14:28:19] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:28:20] [INFO ] Implicit Places using invariants in 299 ms returned []
[2026-05-24 14:28:20] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:28:20] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:28:22] [INFO ] Implicit Places using invariants and state equation in 2527 ms returned []
Implicit Place search using SMT with State Equation took 2830 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-24 14:28:22] [INFO ] Redundant transitions in 1 ms returned []
Running 211 sub problems to find dead transitions.
[2026-05-24 14:28:22] [INFO ] Invariant cache hit.
[2026-05-24 14:28:22] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/205 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/205 variables, 18/20 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/205 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 3 (OVERLAPS) 1/206 variables, 11/31 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 5 (OVERLAPS) 212/418 variables, 206/237 constraints. Problems are: Problem set: 0 solved, 211 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/418 variables, 38/275 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/418 variables, 0/275 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 8 (OVERLAPS) 0/418 variables, 0/275 constraints. Problems are: Problem set: 0 solved, 211 unsolved
No progress, stopping.
After SMT solving in domain Real declared 418/418 variables, and 275 constraints, problems are : Problem set: 0 solved, 211 unsolved in 12938 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 206/206 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 211/211 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 211 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/205 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/205 variables, 18/20 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/205 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 3 (OVERLAPS) 1/206 variables, 11/31 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 5 (OVERLAPS) 212/418 variables, 206/237 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/418 variables, 38/275 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/418 variables, 211/486 constraints. Problems are: Problem set: 0 solved, 211 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:48] [INFO ] Deduced a trap composed of 29 places in 38 ms of which 2 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:48] [INFO ] Deduced a trap composed of 4 places in 96 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:49] [INFO ] Deduced a trap composed of 3 places in 76 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:50] [INFO ] Deduced a trap composed of 13 places in 91 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:50] [INFO ] Deduced a trap composed of 48 places in 100 ms of which 29 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:51] [INFO ] Deduced a trap composed of 49 places in 103 ms of which 26 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:51] [INFO ] Deduced a trap composed of 16 places in 89 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:51] [INFO ] Deduced a trap composed of 51 places in 96 ms of which 30 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:51] [INFO ] Deduced a trap composed of 52 places in 98 ms of which 29 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:51] [INFO ] Deduced a trap composed of 52 places in 105 ms of which 28 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:51] [INFO ] Deduced a trap composed of 21 places in 78 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:51] [INFO ] Deduced a trap composed of 22 places in 79 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:51] [INFO ] Deduced a trap composed of 24 places in 88 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:52] [INFO ] Deduced a trap composed of 25 places in 89 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:52] [INFO ] Deduced a trap composed of 28 places in 86 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:52] [INFO ] Deduced a trap composed of 56 places in 92 ms of which 25 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:52] [INFO ] Deduced a trap composed of 56 places in 112 ms of which 37 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:52] [INFO ] Deduced a trap composed of 57 places in 101 ms of which 28 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:52] [INFO ] Deduced a trap composed of 15 places in 56 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:28:52] [INFO ] Deduced a trap composed of 19 places in 46 ms of which 3 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/418 variables, 20/506 constraints. Problems are: Problem set: 0 solved, 211 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:03] [INFO ] Deduced a trap along path composed of 9 places in 50 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:04] [INFO ] Deduced a trap along path composed of 4 places in 44 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:04] [INFO ] Deduced a trap along path composed of 8 places in 31 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:05] [INFO ] Deduced a trap along path composed of 8 places in 26 ms of which 1 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 418/418 variables, and 510 constraints, problems are : Problem set: 0 solved, 211 unsolved in 30012 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 206/206 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 211/211 constraints, Known Traps: 20/20 constraints, Known Traps Along Path: 4/4 constraints]
After SMT, in 42995ms problems are : Problem set: 0 solved, 211 unsolved
Search for dead transitions found 0 dead transitions in 42997ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 45836 ms. Remains : 206/206 places, 212/212 transitions.
Attempting over-approximation, by ignoring read arcs.
Performed 17 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 0 with 17 Pre rules applied. Total rules applied 0 place count 206 transition count 195
Deduced a syphon composed of 17 places in 1 ms
Reduce places removed 17 places and 0 transitions.
Iterating global reduction 0 with 34 rules applied. Total rules applied 34 place count 189 transition count 195
Discarding 9 places :
Symmetric choice reduction at 0 with 9 rule applications. Total rules 43 place count 180 transition count 186
Iterating global reduction 0 with 9 rules applied. Total rules applied 52 place count 180 transition count 186
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 0 with 2 rules applied. Total rules applied 54 place count 179 transition count 185
Free-agglomeration rule (complex) applied 2 times.
Iterating global reduction 0 with 2 rules applied. Total rules applied 56 place count 179 transition count 183
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 58 place count 177 transition count 183
Applied a total of 58 rules in 13 ms. Remains 177 /206 variables (removed 29) and now considering 183/212 (removed 29) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 183 rows 177 cols
[2026-05-24 14:29:05] [INFO ] Computed 31 invariants in 7 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-24 14:29:05] [INFO ] [Real]Absence check using 13 positive place invariants in 7 ms returned sat
[2026-05-24 14:29:05] [INFO ] [Real]Absence check using 13 positive and 18 generalized place invariants in 3 ms returned sat
[2026-05-24 14:29:05] [INFO ] After 73ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-24 14:29:05] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-24 14:29:05] [INFO ] After 12ms SMT Verify possible using 1 Read/Feed constraints in real domain returned unsat :0 sat :1
TRAPS : Iteration 0
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:06] [INFO ] Deduced a trap composed of 5 places in 78 ms of which 5 ms to minimize.
TRAPS : Iteration 1
[2026-05-24 14:29:06] [INFO ] After 110ms SMT Verify possible using trap constraints in real domain returned unsat :0 sat :0 real:1
[2026-05-24 14:29:06] [INFO ] After 227ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-24 14:29:06] [INFO ] [Nat]Absence check using 13 positive place invariants in 7 ms returned sat
[2026-05-24 14:29:06] [INFO ] [Nat]Absence check using 13 positive and 18 generalized place invariants in 3 ms returned sat
[2026-05-24 14:29:06] [INFO ] After 77ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-24 14:29:06] [INFO ] After 6ms SMT Verify possible using 1 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:06] [INFO ] Deduced a trap composed of 5 places in 66 ms of which 4 ms to minimize.
[2026-05-24 14:29:06] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 85 ms
TRAPS : Iteration 1
[2026-05-24 14:29:06] [INFO ] After 118ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-24 14:29:06] [INFO ] After 243ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
Over-approximation ignoring read arcs solved 0 properties in 495 ms.
RANDOM walk for 40000 steps (5810 resets) in 56 ms. (701 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (3681 resets) in 52 ms. (754 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 784784 steps, run timeout after 3001 ms. (steps per millisecond=261 ) properties seen :0 out of 1
Probabilistic random walk after 784784 steps, saw 392474 distinct states, run finished after 3001 ms. (steps per millisecond=261 ) properties seen :0
// Phase 1: matrix 246 rows 252 cols
[2026-05-24 14:29:09] [INFO ] Computed 43 invariants in 16 ms
[2026-05-24 14:29:09] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 32/33 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/33 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 88/121 variables, 12/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/121 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 69/190 variables, 15/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:09] [INFO ] Deduced a trap composed of 3 places in 59 ms of which 3 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/190 variables, 1/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/190 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 28/218 variables, 9/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/218 variables, 0/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 236/454 variables, 218/258 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/454 variables, 24/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (INCLUDED_ONLY) 0/454 variables, 0/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 37/491 variables, 28/310 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/491 variables, 2/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/491 variables, 1/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/491 variables, 0/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 2/493 variables, 2/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/493 variables, 2/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/493 variables, 0/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 5/498 variables, 4/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/498 variables, 1/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/498 variables, 0/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (OVERLAPS) 0/498 variables, 0/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 498/498 variables, and 322 constraints, problems are : Problem set: 0 solved, 1 unsolved in 364 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 32/33 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/33 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 88/121 variables, 12/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/121 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 69/190 variables, 15/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/190 variables, 1/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/190 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 28/218 variables, 9/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/218 variables, 0/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 236/454 variables, 218/258 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/454 variables, 24/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:09] [INFO ] Deduced a trap along path composed of 2 places in 19 ms of which 0 ms to minimize.
At refinement iteration 12 (INCLUDED_ONLY) 0/454 variables, 1/283 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/454 variables, 0/283 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 37/491 variables, 28/311 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/491 variables, 2/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/491 variables, 1/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/491 variables, 1/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/491 variables, 0/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 2/493 variables, 2/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/493 variables, 2/319 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/493 variables, 0/319 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 5/498 variables, 4/323 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (INCLUDED_ONLY) 0/498 variables, 1/324 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:10] [INFO ] Deduced a trap composed of 4 places in 84 ms of which 4 ms to minimize.
At refinement iteration 24 (INCLUDED_ONLY) 0/498 variables, 1/325 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 25 (INCLUDED_ONLY) 0/498 variables, 0/325 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 26 (OVERLAPS) 0/498 variables, 0/325 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 498/498 variables, and 325 constraints, problems are : Problem set: 0 solved, 1 unsolved in 736 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 2/2 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 1120ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 71 ms.
Support contains 1 out of 252 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 252/252 places, 246/246 transitions.
Graph (complete) has 834 edges and 252 vertex of which 251 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.0 ms
Discarding 1 places :
Also discarding 0 output 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 2 place count 251 transition count 245
Free-agglomeration rule (complex) applied 25 times.
Iterating global reduction 1 with 25 rules applied. Total rules applied 27 place count 251 transition count 220
Reduce places removed 25 places and 0 transitions.
Iterating post reduction 1 with 25 rules applied. Total rules applied 52 place count 226 transition count 220
Partial Free-agglomeration rule applied 27 times.
Drop transitions (Partial Free agglomeration) removed 27 transitions
Iterating global reduction 2 with 27 rules applied. Total rules applied 79 place count 226 transition count 220
Applied a total of 79 rules in 12 ms. Remains 226 /252 variables (removed 26) and now considering 220/246 (removed 26) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 13 ms. Remains : 226/252 places, 220/246 transitions.
RANDOM walk for 40000 steps (5716 resets) in 71 ms. (555 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40001 steps (3597 resets) in 36 ms. (1081 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 763356 steps, run timeout after 3001 ms. (steps per millisecond=254 ) properties seen :0 out of 1
Probabilistic random walk after 763356 steps, saw 381757 distinct states, run finished after 3002 ms. (steps per millisecond=254 ) properties seen :0
// Phase 1: matrix 220 rows 226 cols
[2026-05-24 14:29:13] [INFO ] Computed 43 invariants in 15 ms
[2026-05-24 14:29:13] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 43/44 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/44 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 133/177 variables, 25/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/177 variables, 0/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 44/221 variables, 15/41 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:13] [INFO ] Deduced a trap composed of 4 places in 98 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:13] [INFO ] Deduced a trap composed of 6 places in 94 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:13] [INFO ] Deduced a trap composed of 7 places in 94 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:14] [INFO ] Deduced a trap composed of 7 places in 90 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:14] [INFO ] Deduced a trap composed of 9 places in 87 ms of which 9 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/221 variables, 5/46 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/221 variables, 0/46 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 220/441 variables, 221/267 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (INCLUDED_ONLY) 0/441 variables, 38/305 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/441 variables, 0/305 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 5/446 variables, 5/310 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/446 variables, 2/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/446 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 0/446 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 446/446 variables, and 312 constraints, problems are : Problem set: 0 solved, 1 unsolved in 834 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, Generalized P Invariants (flows): 40/40 constraints, State Equation: 226/226 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 5/5 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 43/44 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/44 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 133/177 variables, 25/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/177 variables, 0/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 44/221 variables, 15/41 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/221 variables, 5/46 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:14] [INFO ] Deduced a trap composed of 10 places in 100 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:14] [INFO ] Deduced a trap composed of 10 places in 104 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:14] [INFO ] Deduced a trap composed of 13 places in 113 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:14] [INFO ] Deduced a trap composed of 15 places in 108 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:15] [INFO ] Deduced a trap composed of 16 places in 101 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:15] [INFO ] Deduced a trap composed of 19 places in 98 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:15] [INFO ] Deduced a trap composed of 42 places in 159 ms of which 54 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:15] [INFO ] Deduced a trap composed of 21 places in 102 ms of which 15 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:15] [INFO ] Deduced a trap composed of 16 places in 115 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:15] [INFO ] Deduced a trap composed of 43 places in 176 ms of which 75 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/221 variables, 10/56 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/221 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 220/441 variables, 221/277 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/441 variables, 38/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/441 variables, 1/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/441 variables, 0/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 5/446 variables, 5/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/446 variables, 2/323 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/446 variables, 0/323 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 0/446 variables, 0/323 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 446/446 variables, and 323 constraints, problems are : Problem set: 0 solved, 1 unsolved in 1651 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, Generalized P Invariants (flows): 40/40 constraints, State Equation: 226/226 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 15/15 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 2507ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 70 ms.
Support contains 1 out of 226 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 226/226 places, 220/220 transitions.
Applied a total of 0 rules in 9 ms. Remains 226 /226 variables (removed 0) and now considering 220/220 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 10 ms. Remains : 226/226 places, 220/220 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 226/226 places, 220/220 transitions.
Applied a total of 0 rules in 4 ms. Remains 226 /226 variables (removed 0) and now considering 220/220 (removed 0) transitions.
[2026-05-24 14:29:16] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:29:16] [INFO ] Implicit Places using invariants in 599 ms returned [43, 48, 70, 75, 96, 102, 123, 128, 148, 153, 174, 180]
[2026-05-24 14:29:16] [INFO ] Actually due to overlaps returned [48, 43]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 601 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 224/226 places, 220/220 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 224 transition count 219
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 223 transition count 219
Applied a total of 2 rules in 11 ms. Remains 223 /224 variables (removed 1) and now considering 219/220 (removed 1) transitions.
// Phase 1: matrix 219 rows 223 cols
[2026-05-24 14:29:16] [INFO ] Computed 41 invariants in 13 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:29:17] [INFO ] Implicit Places using invariants in 492 ms returned [67, 72, 93, 99, 120, 125, 145, 150, 171, 177]
[2026-05-24 14:29:17] [INFO ] Actually due to overlaps returned [72, 67]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 494 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 2 : 221/226 places, 219/220 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 221 transition count 218
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 220 transition count 218
Applied a total of 2 rules in 11 ms. Remains 220 /221 variables (removed 1) and now considering 218/219 (removed 1) transitions.
// Phase 1: matrix 218 rows 220 cols
[2026-05-24 14:29:17] [INFO ] Computed 39 invariants in 14 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:29:17] [INFO ] Implicit Places using invariants in 450 ms returned [90, 96, 117, 122, 142, 147, 168, 174]
[2026-05-24 14:29:17] [INFO ] Actually due to overlaps returned [96, 90]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 452 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 3 : 218/226 places, 218/220 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 218 transition count 217
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 217 transition count 217
Applied a total of 2 rules in 18 ms. Remains 217 /218 variables (removed 1) and now considering 217/218 (removed 1) transitions.
// Phase 1: matrix 217 rows 217 cols
[2026-05-24 14:29:17] [INFO ] Computed 37 invariants in 13 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:29:18] [INFO ] Implicit Places using invariants in 386 ms returned [114, 119, 139, 144, 165, 171]
[2026-05-24 14:29:18] [INFO ] Actually due to overlaps returned [119, 114]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 387 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 4 : 215/226 places, 217/220 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 215 transition count 216
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 214 transition count 216
Applied a total of 2 rules in 10 ms. Remains 214 /215 variables (removed 1) and now considering 216/217 (removed 1) transitions.
// Phase 1: matrix 216 rows 214 cols
[2026-05-24 14:29:18] [INFO ] Computed 35 invariants in 12 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:29:18] [INFO ] Implicit Places using invariants in 367 ms returned [136, 141, 162, 168]
[2026-05-24 14:29:18] [INFO ] Actually due to overlaps returned [141, 136]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 370 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 5 : 212/226 places, 216/220 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 212 transition count 215
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 211 transition count 215
Applied a total of 2 rules in 12 ms. Remains 211 /212 variables (removed 1) and now considering 215/216 (removed 1) transitions.
// Phase 1: matrix 215 rows 211 cols
[2026-05-24 14:29:18] [INFO ] Computed 33 invariants in 17 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:29:18] [INFO ] Implicit Places using invariants in 345 ms returned [159, 165]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 346 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 6 : 209/226 places, 215/220 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 209 transition count 214
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 208 transition count 214
Applied a total of 2 rules in 9 ms. Remains 208 /209 variables (removed 1) and now considering 214/215 (removed 1) transitions.
// Phase 1: matrix 214 rows 208 cols
[2026-05-24 14:29:18] [INFO ] Computed 31 invariants in 15 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:29:19] [INFO ] Implicit Places using invariants in 316 ms returned []
[2026-05-24 14:29:19] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:29:19] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:29:22] [INFO ] Implicit Places using invariants and state equation in 3165 ms returned []
Implicit Place search using SMT with State Equation took 3481 ms to find 0 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 7 : 208/226 places, 214/220 transitions.
Finished structural reductions in REACHABILITY mode , in 7 iterations and 6206 ms. Remains : 208/226 places, 214/220 transitions.
RANDOM walk for 40000 steps (5762 resets) in 95 ms. (416 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40001 steps (3692 resets) in 36 ms. (1081 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 760361 steps, run timeout after 3001 ms. (steps per millisecond=253 ) properties seen :0 out of 1
Probabilistic random walk after 760361 steps, saw 380267 distinct states, run finished after 3001 ms. (steps per millisecond=253 ) properties seen :0
[2026-05-24 14:29:25] [INFO ] Invariant cache hit.
[2026-05-24 14:29:25] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 88/89 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/89 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 60/149 variables, 6/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:25] [INFO ] Deduced a trap composed of 85 places in 76 ms of which 7 ms to minimize.
At refinement iteration 4 (INCLUDED_ONLY) 0/149 variables, 1/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/149 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 54/203 variables, 18/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:25] [INFO ] Deduced a trap composed of 4 places in 99 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:25] [INFO ] Deduced a trap composed of 7 places in 74 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:25] [INFO ] Deduced a trap composed of 9 places in 74 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:25] [INFO ] Deduced a trap composed of 10 places in 67 ms of which 6 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/203 variables, 4/34 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/203 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 214/417 variables, 203/237 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/417 variables, 38/275 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/417 variables, 0/275 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 5/422 variables, 5/280 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/422 variables, 2/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/422 variables, 0/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 0/422 variables, 0/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 422/422 variables, and 282 constraints, problems are : Problem set: 0 solved, 1 unsolved in 667 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 208/208 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 5/5 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 88/89 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/89 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 60/149 variables, 6/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/149 variables, 1/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/149 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 54/203 variables, 18/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/203 variables, 4/34 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/203 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 214/417 variables, 203/237 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/417 variables, 38/275 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/417 variables, 1/276 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/417 variables, 0/276 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 5/422 variables, 5/281 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/422 variables, 2/283 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/422 variables, 0/283 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 0/422 variables, 0/283 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 422/422 variables, and 283 constraints, problems are : Problem set: 0 solved, 1 unsolved in 355 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 208/208 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 5/5 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 1028ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 58 ms.
Support contains 1 out of 208 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 208/208 places, 214/214 transitions.
Applied a total of 0 rules in 3 ms. Remains 208 /208 variables (removed 0) and now considering 214/214 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 208/208 places, 214/214 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 208/208 places, 214/214 transitions.
Applied a total of 0 rules in 3 ms. Remains 208 /208 variables (removed 0) and now considering 214/214 (removed 0) transitions.
[2026-05-24 14:29:26] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:29:26] [INFO ] Implicit Places using invariants in 279 ms returned []
[2026-05-24 14:29:26] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:29:26] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:29:29] [INFO ] Implicit Places using invariants and state equation in 3127 ms returned []
Implicit Place search using SMT with State Equation took 3407 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-24 14:29:29] [INFO ] Redundant transitions in 1 ms returned []
Running 213 sub problems to find dead transitions.
[2026-05-24 14:29:29] [INFO ] Invariant cache hit.
[2026-05-24 14:29:29] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/207 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/207 variables, 18/20 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/207 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 3 (OVERLAPS) 1/208 variables, 11/31 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/208 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 5 (OVERLAPS) 214/422 variables, 208/239 constraints. Problems are: Problem set: 0 solved, 213 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/422 variables, 38/277 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/422 variables, 0/277 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 8 (OVERLAPS) 0/422 variables, 0/277 constraints. Problems are: Problem set: 0 solved, 213 unsolved
No progress, stopping.
After SMT solving in domain Real declared 422/422 variables, and 277 constraints, problems are : Problem set: 0 solved, 213 unsolved in 14262 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 208/208 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 213/213 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 213 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/207 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/207 variables, 18/20 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/207 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 3 (OVERLAPS) 1/208 variables, 11/31 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/208 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 5 (OVERLAPS) 214/422 variables, 208/239 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/422 variables, 38/277 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/422 variables, 213/490 constraints. Problems are: Problem set: 0 solved, 213 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:54] [INFO ] Deduced a trap composed of 19 places in 58 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:55] [INFO ] Deduced a trap composed of 34 places in 29 ms of which 2 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:57] [INFO ] Deduced a trap composed of 4 places in 75 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:58] [INFO ] Deduced a trap composed of 12 places in 54 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:59] [INFO ] Deduced a trap composed of 18 places in 45 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:59] [INFO ] Deduced a trap composed of 22 places in 52 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:29:59] [INFO ] Deduced a trap composed of 23 places in 48 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:00] [INFO ] Deduced a trap composed of 26 places in 43 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:00] [INFO ] Deduced a trap composed of 27 places in 47 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:00] [INFO ] Deduced a trap composed of 29 places in 36 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:01] [INFO ] Deduced a trap composed of 30 places in 44 ms of which 2 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:02] [INFO ] Deduced a trap composed of 38 places in 96 ms of which 23 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:03] [INFO ] Deduced a trap composed of 61 places in 90 ms of which 20 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:03] [INFO ] Deduced a trap composed of 62 places in 89 ms of which 18 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:03] [INFO ] Deduced a trap composed of 60 places in 86 ms of which 22 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:03] [INFO ] Deduced a trap composed of 16 places in 44 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:05] [INFO ] Deduced a trap composed of 13 places in 64 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:05] [INFO ] Deduced a trap composed of 8 places in 62 ms of which 4 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/422 variables, 18/508 constraints. Problems are: Problem set: 0 solved, 213 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 422/422 variables, and 508 constraints, problems are : Problem set: 0 solved, 213 unsolved in 30020 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 208/208 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 213/213 constraints, Known Traps: 18/18 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 44343ms problems are : Problem set: 0 solved, 213 unsolved
Search for dead transitions found 0 dead transitions in 44344ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 47765 ms. Remains : 208/208 places, 214/214 transitions.
Attempting over-approximation, by ignoring read arcs.
Performed 18 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 0 with 18 Pre rules applied. Total rules applied 0 place count 208 transition count 196
Deduced a syphon composed of 18 places in 0 ms
Reduce places removed 18 places and 0 transitions.
Iterating global reduction 0 with 36 rules applied. Total rules applied 36 place count 190 transition count 196
Discarding 9 places :
Symmetric choice reduction at 0 with 9 rule applications. Total rules 45 place count 181 transition count 187
Iterating global reduction 0 with 9 rules applied. Total rules applied 54 place count 181 transition count 187
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 0 with 2 rules applied. Total rules applied 56 place count 180 transition count 186
Free-agglomeration rule (complex) applied 2 times.
Iterating global reduction 0 with 2 rules applied. Total rules applied 58 place count 180 transition count 184
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 60 place count 178 transition count 184
Applied a total of 60 rules in 11 ms. Remains 178 /208 variables (removed 30) and now considering 184/214 (removed 30) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 184 rows 178 cols
[2026-05-24 14:30:14] [INFO ] Computed 31 invariants in 12 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-24 14:30:14] [INFO ] [Real]Absence check using 13 positive place invariants in 8 ms returned sat
[2026-05-24 14:30:14] [INFO ] [Real]Absence check using 13 positive and 18 generalized place invariants in 2 ms returned sat
[2026-05-24 14:30:14] [INFO ] After 78ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-24 14:30:14] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-24 14:30:14] [INFO ] After 8ms SMT Verify possible using 1 Read/Feed constraints in real domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-24 14:30:14] [INFO ] After 28ms SMT Verify possible using trap constraints in real domain returned unsat :0 sat :1
[2026-05-24 14:30:14] [INFO ] After 167ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :1
Over-approximation ignoring read arcs solved 0 properties in 192 ms.
RANDOM walk for 40000 steps (5772 resets) in 62 ms. (634 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40001 steps (3624 resets) in 79 ms. (500 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 773683 steps, run timeout after 3001 ms. (steps per millisecond=257 ) properties seen :0 out of 1
Probabilistic random walk after 773683 steps, saw 386925 distinct states, run finished after 3001 ms. (steps per millisecond=257 ) properties seen :0
// Phase 1: matrix 246 rows 252 cols
[2026-05-24 14:30:17] [INFO ] Computed 43 invariants in 15 ms
[2026-05-24 14:30:17] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 32/33 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/33 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 88/121 variables, 12/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/121 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 69/190 variables, 15/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/190 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 28/218 variables, 9/39 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/218 variables, 0/39 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 236/454 variables, 218/257 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/454 variables, 24/281 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/454 variables, 0/281 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 37/491 variables, 28/309 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/491 variables, 2/311 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/491 variables, 1/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/491 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 2/493 variables, 2/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/493 variables, 2/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/493 variables, 0/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 5/498 variables, 4/320 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/498 variables, 1/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/498 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 0/498 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 498/498 variables, and 321 constraints, problems are : Problem set: 0 solved, 1 unsolved in 282 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 32/33 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/33 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 88/121 variables, 12/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/121 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 69/190 variables, 15/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:17] [INFO ] Deduced a trap composed of 3 places in 58 ms of which 3 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/190 variables, 1/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/190 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 28/218 variables, 9/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/218 variables, 0/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 236/454 variables, 218/258 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/454 variables, 24/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:18] [INFO ] Deduced a trap along path composed of 2 places in 22 ms of which 1 ms to minimize.
At refinement iteration 12 (INCLUDED_ONLY) 0/454 variables, 1/283 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/454 variables, 0/283 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 37/491 variables, 28/311 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/491 variables, 2/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/491 variables, 1/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/491 variables, 1/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:18] [INFO ] Deduced a trap along path composed of 8 places in 24 ms of which 0 ms to minimize.
At refinement iteration 18 (INCLUDED_ONLY) 0/491 variables, 1/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/491 variables, 0/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 2/493 variables, 2/318 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/493 variables, 2/320 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/493 variables, 0/320 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (OVERLAPS) 5/498 variables, 4/324 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (INCLUDED_ONLY) 0/498 variables, 1/325 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:18] [INFO ] Deduced a trap composed of 12 places in 65 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:18] [INFO ] Deduced a trap composed of 13 places in 69 ms of which 6 ms to minimize.
At refinement iteration 25 (INCLUDED_ONLY) 0/498 variables, 2/327 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:18] [INFO ] Deduced a trap along path composed of 5 places in 33 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:18] [INFO ] Deduced a trap along path composed of 6 places in 31 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:18] [INFO ] Deduced a trap along path composed of 8 places in 29 ms of which 0 ms to minimize.
At refinement iteration 26 (INCLUDED_ONLY) 0/498 variables, 3/330 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 27 (INCLUDED_ONLY) 0/498 variables, 0/330 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 28 (OVERLAPS) 0/498 variables, 0/330 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 498/498 variables, and 330 constraints, problems are : Problem set: 0 solved, 1 unsolved in 879 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 3/3 constraints, Known Traps Along Path: 5/5 constraints]
After SMT, in 1180ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 76 ms.
Support contains 1 out of 252 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 252/252 places, 246/246 transitions.
Graph (complete) has 834 edges and 252 vertex of which 251 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.0 ms
Discarding 1 places :
Also discarding 0 output 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 2 place count 251 transition count 245
Free-agglomeration rule (complex) applied 26 times.
Iterating global reduction 1 with 26 rules applied. Total rules applied 28 place count 251 transition count 219
Reduce places removed 26 places and 0 transitions.
Iterating post reduction 1 with 26 rules applied. Total rules applied 54 place count 225 transition count 219
Partial Free-agglomeration rule applied 25 times.
Drop transitions (Partial Free agglomeration) removed 25 transitions
Iterating global reduction 2 with 25 rules applied. Total rules applied 79 place count 225 transition count 219
Applied a total of 79 rules in 11 ms. Remains 225 /252 variables (removed 27) and now considering 219/246 (removed 27) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 11 ms. Remains : 225/252 places, 219/246 transitions.
RANDOM walk for 40000 steps (5781 resets) in 90 ms. (439 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40003 steps (3654 resets) in 43 ms. (909 steps per ms) remains 1/1 properties
Probably explored full state space saw : 355343 states, properties seen :0
Probabilistic random walk after 710692 steps, saw 355343 distinct states, run finished after 2691 ms. (steps per millisecond=264 ) properties seen :0
Interrupted probabilistic random walk after 799988 steps, run timeout after 3001 ms. (steps per millisecond=266 ) properties seen :0 out of 1
Exhaustive walk after 799988 steps, saw 400094 distinct states, run finished after 3002 ms. (steps per millisecond=266 ) properties seen :0
// Phase 1: matrix 219 rows 225 cols
[2026-05-24 14:30:24] [INFO ] Computed 43 invariants in 19 ms
[2026-05-24 14:30:24] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 136/137 variables, 8/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/137 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 2/139 variables, 1/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/139 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 79/218 variables, 31/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:24] [INFO ] Deduced a trap composed of 4 places in 95 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:24] [INFO ] Deduced a trap composed of 6 places in 100 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:24] [INFO ] Deduced a trap composed of 7 places in 97 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:25] [INFO ] Deduced a trap composed of 7 places in 98 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:25] [INFO ] Deduced a trap composed of 10 places in 99 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:25] [INFO ] Deduced a trap composed of 10 places in 96 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:25] [INFO ] Deduced a trap composed of 13 places in 104 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:25] [INFO ] Deduced a trap composed of 13 places in 93 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:25] [INFO ] Deduced a trap composed of 16 places in 94 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:25] [INFO ] Deduced a trap composed of 16 places in 97 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:25] [INFO ] Deduced a trap composed of 19 places in 92 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:25] [INFO ] Deduced a trap composed of 20 places in 76 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:25] [INFO ] Deduced a trap composed of 23 places in 68 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:25] [INFO ] Deduced a trap composed of 24 places in 57 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:26] [INFO ] Deduced a trap composed of 25 places in 60 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:26] [INFO ] Deduced a trap composed of 26 places in 57 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:26] [INFO ] Deduced a trap composed of 26 places in 59 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:26] [INFO ] Deduced a trap composed of 27 places in 60 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:26] [INFO ] Deduced a trap composed of 41 places in 61 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:26] [INFO ] Deduced a trap composed of 31 places in 58 ms of which 8 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/218 variables, 20/60 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:26] [INFO ] Deduced a trap composed of 22 places in 52 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:26] [INFO ] Deduced a trap composed of 44 places in 62 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:26] [INFO ] Deduced a trap composed of 18 places in 58 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:26] [INFO ] Deduced a trap composed of 46 places in 64 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:26] [INFO ] Deduced a trap composed of 42 places in 67 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:26] [INFO ] Deduced a trap composed of 45 places in 58 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:26] [INFO ] Deduced a trap composed of 47 places in 55 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:26] [INFO ] Deduced a trap composed of 29 places in 55 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:26] [INFO ] Deduced a trap composed of 29 places in 54 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:27] [INFO ] Deduced a trap composed of 40 places in 55 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:27] [INFO ] Deduced a trap composed of 43 places in 59 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:27] [INFO ] Deduced a trap composed of 45 places in 58 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:27] [INFO ] Deduced a trap composed of 41 places in 56 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:27] [INFO ] Deduced a trap composed of 44 places in 54 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:27] [INFO ] Deduced a trap composed of 46 places in 60 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:27] [INFO ] Deduced a trap composed of 26 places in 67 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:27] [INFO ] Deduced a trap composed of 37 places in 60 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:27] [INFO ] Deduced a trap composed of 38 places in 56 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:27] [INFO ] Deduced a trap composed of 39 places in 69 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:27] [INFO ] Deduced a trap composed of 40 places in 60 ms of which 6 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/218 variables, 20/80 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:27] [INFO ] Deduced a trap composed of 41 places in 65 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:27] [INFO ] Deduced a trap composed of 42 places in 61 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:27] [INFO ] Deduced a trap composed of 42 places in 57 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:27] [INFO ] Deduced a trap composed of 43 places in 59 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:27] [INFO ] Deduced a trap composed of 44 places in 53 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:28] [INFO ] Deduced a trap composed of 37 places in 54 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:28] [INFO ] Deduced a trap composed of 38 places in 58 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:28] [INFO ] Deduced a trap composed of 39 places in 58 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:28] [INFO ] Deduced a trap composed of 22 places in 63 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:28] [INFO ] Deduced a trap composed of 40 places in 59 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:28] [INFO ] Deduced a trap composed of 41 places in 55 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:28] [INFO ] Deduced a trap composed of 42 places in 55 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:28] [INFO ] Deduced a trap composed of 40 places in 65 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:28] [INFO ] Deduced a trap composed of 41 places in 60 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:28] [INFO ] Deduced a trap composed of 42 places in 60 ms of which 6 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/218 variables, 15/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (INCLUDED_ONLY) 0/218 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 2/220 variables, 1/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/220 variables, 0/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 219/439 variables, 220/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/439 variables, 38/354 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/439 variables, 0/354 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 5/444 variables, 5/359 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/444 variables, 2/361 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/444 variables, 0/361 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 0/444 variables, 0/361 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 444/444 variables, and 361 constraints, problems are : Problem set: 0 solved, 1 unsolved in 4364 ms.
Refiners :[Positive P Invariants (semi-flows): 11/11 constraints, Generalized P Invariants (flows): 32/32 constraints, State Equation: 225/225 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 55/55 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 136/137 variables, 8/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/137 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 2/139 variables, 1/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/139 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 79/218 variables, 31/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/218 variables, 55/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/218 variables, 0/95 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 2/220 variables, 1/96 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:29] [INFO ] Deduced a trap composed of 9 places in 81 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:29] [INFO ] Deduced a trap composed of 10 places in 79 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:29] [INFO ] Deduced a trap composed of 15 places in 62 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:29] [INFO ] Deduced a trap composed of 20 places in 61 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:29] [INFO ] Deduced a trap composed of 37 places in 59 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:29] [INFO ] Deduced a trap composed of 38 places in 58 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:29] [INFO ] Deduced a trap composed of 39 places in 61 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:29] [INFO ] Deduced a trap composed of 39 places in 59 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:29] [INFO ] Deduced a trap composed of 40 places in 57 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:29] [INFO ] Deduced a trap composed of 41 places in 62 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:29] [INFO ] Deduced a trap composed of 39 places in 63 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:29] [INFO ] Deduced a trap composed of 38 places in 58 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:29] [INFO ] Deduced a trap composed of 36 places in 60 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:29] [INFO ] Deduced a trap composed of 38 places in 64 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:30] [INFO ] Deduced a trap composed of 39 places in 61 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:30] [INFO ] Deduced a trap composed of 37 places in 70 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:30] [INFO ] Deduced a trap composed of 38 places in 64 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:30] [INFO ] Deduced a trap composed of 40 places in 56 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:30] [INFO ] Deduced a trap composed of 39 places in 59 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:30] [INFO ] Deduced a trap composed of 40 places in 61 ms of which 7 ms to minimize.
At refinement iteration 9 (INCLUDED_ONLY) 0/220 variables, 20/116 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:30] [INFO ] Deduced a trap composed of 40 places in 58 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:30] [INFO ] Deduced a trap composed of 40 places in 56 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:30] [INFO ] Deduced a trap composed of 41 places in 57 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:30] [INFO ] Deduced a trap composed of 39 places in 72 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:30] [INFO ] Deduced a trap composed of 40 places in 67 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:30] [INFO ] Deduced a trap composed of 40 places in 67 ms of which 7 ms to minimize.
At refinement iteration 10 (INCLUDED_ONLY) 0/220 variables, 6/122 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/220 variables, 0/122 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 219/439 variables, 220/342 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/439 variables, 38/380 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/439 variables, 1/381 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:31] [INFO ] Deduced a trap composed of 3 places in 95 ms of which 4 ms to minimize.
At refinement iteration 15 (INCLUDED_ONLY) 0/439 variables, 1/382 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:31] [INFO ] Deduced a trap along path composed of 6 places in 34 ms of which 0 ms to minimize.
At refinement iteration 16 (INCLUDED_ONLY) 0/439 variables, 1/383 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/439 variables, 0/383 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 5/444 variables, 5/388 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/444 variables, 2/390 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/444 variables, 0/390 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 0/444 variables, 0/390 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 444/444 variables, and 390 constraints, problems are : Problem set: 0 solved, 1 unsolved in 2669 ms.
Refiners :[Positive P Invariants (semi-flows): 11/11 constraints, Generalized P Invariants (flows): 32/32 constraints, State Equation: 225/225 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 82/82 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 7058ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 93 ms.
Support contains 1 out of 225 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 225/225 places, 219/219 transitions.
Applied a total of 0 rules in 4 ms. Remains 225 /225 variables (removed 0) and now considering 219/219 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 225/225 places, 219/219 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 225/225 places, 219/219 transitions.
Applied a total of 0 rules in 3 ms. Remains 225 /225 variables (removed 0) and now considering 219/219 (removed 0) transitions.
[2026-05-24 14:30:31] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:30:32] [INFO ] Implicit Places using invariants in 564 ms returned [43, 48, 70, 75, 95, 101, 122, 127, 147, 152, 173, 179]
[2026-05-24 14:30:32] [INFO ] Actually due to overlaps returned [48, 43]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 565 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 223/225 places, 219/219 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 223 transition count 218
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 222 transition count 218
Applied a total of 2 rules in 10 ms. Remains 222 /223 variables (removed 1) and now considering 218/219 (removed 1) transitions.
// Phase 1: matrix 218 rows 222 cols
[2026-05-24 14:30:32] [INFO ] Computed 41 invariants in 14 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:30:32] [INFO ] Implicit Places using invariants in 503 ms returned [67, 72, 92, 98, 119, 124, 144, 149, 170, 176]
[2026-05-24 14:30:32] [INFO ] Actually due to overlaps returned [72, 67]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 507 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 2 : 220/225 places, 218/219 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 220 transition count 217
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 219 transition count 217
Applied a total of 2 rules in 8 ms. Remains 219 /220 variables (removed 1) and now considering 217/218 (removed 1) transitions.
// Phase 1: matrix 217 rows 219 cols
[2026-05-24 14:30:32] [INFO ] Computed 39 invariants in 18 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:30:33] [INFO ] Implicit Places using invariants in 432 ms returned [89, 95, 116, 121, 141, 146, 167, 173]
[2026-05-24 14:30:33] [INFO ] Actually due to overlaps returned [95, 89]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 433 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 3 : 217/225 places, 217/219 transitions.
Partial Free-agglomeration rule applied 2 times.
Drop transitions (Partial Free agglomeration) removed 2 transitions
Iterating global reduction 0 with 2 rules applied. Total rules applied 2 place count 217 transition count 217
Applied a total of 2 rules in 8 ms. Remains 217 /217 variables (removed 0) and now considering 217/217 (removed 0) transitions.
// Phase 1: matrix 217 rows 217 cols
[2026-05-24 14:30:33] [INFO ] Computed 37 invariants in 13 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:30:33] [INFO ] Implicit Places using invariants in 402 ms returned [114, 119, 139, 144, 165, 171]
[2026-05-24 14:30:33] [INFO ] Actually due to overlaps returned [119, 114]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 404 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 4 : 215/225 places, 217/219 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 215 transition count 216
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 214 transition count 216
Applied a total of 2 rules in 12 ms. Remains 214 /215 variables (removed 1) and now considering 216/217 (removed 1) transitions.
// Phase 1: matrix 216 rows 214 cols
[2026-05-24 14:30:33] [INFO ] Computed 35 invariants in 15 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:30:34] [INFO ] Implicit Places using invariants in 353 ms returned [136, 141, 162, 168]
[2026-05-24 14:30:34] [INFO ] Actually due to overlaps returned [141, 136]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 354 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 5 : 212/225 places, 216/219 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 212 transition count 215
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 211 transition count 215
Applied a total of 2 rules in 10 ms. Remains 211 /212 variables (removed 1) and now considering 215/216 (removed 1) transitions.
// Phase 1: matrix 215 rows 211 cols
[2026-05-24 14:30:34] [INFO ] Computed 33 invariants in 15 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:30:34] [INFO ] Implicit Places using invariants in 317 ms returned [159, 165]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 318 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 6 : 209/225 places, 215/219 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 209 transition count 214
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 208 transition count 214
Applied a total of 2 rules in 10 ms. Remains 208 /209 variables (removed 1) and now considering 214/215 (removed 1) transitions.
// Phase 1: matrix 214 rows 208 cols
[2026-05-24 14:30:34] [INFO ] Computed 31 invariants in 14 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:30:34] [INFO ] Implicit Places using invariants in 305 ms returned []
[2026-05-24 14:30:34] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:30:34] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:30:37] [INFO ] Implicit Places using invariants and state equation in 2411 ms returned []
Implicit Place search using SMT with State Equation took 2717 ms to find 0 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 7 : 208/225 places, 214/219 transitions.
Finished structural reductions in REACHABILITY mode , in 7 iterations and 5360 ms. Remains : 208/225 places, 214/219 transitions.
RANDOM walk for 40000 steps (5748 resets) in 74 ms. (533 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (3622 resets) in 60 ms. (655 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 790131 steps, run timeout after 3001 ms. (steps per millisecond=263 ) properties seen :0 out of 1
Probabilistic random walk after 790131 steps, saw 395154 distinct states, run finished after 3001 ms. (steps per millisecond=263 ) properties seen :0
[2026-05-24 14:30:40] [INFO ] Invariant cache hit.
[2026-05-24 14:30:40] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 128/129 variables, 6/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:40] [INFO ] Deduced a trap composed of 3 places in 56 ms of which 2 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/129 variables, 1/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/129 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 20/149 variables, 5/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/149 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 54/203 variables, 18/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/203 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 214/417 variables, 203/233 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/417 variables, 38/271 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:40] [INFO ] Deduced a trap composed of 19 places in 101 ms of which 13 ms to minimize.
At refinement iteration 10 (INCLUDED_ONLY) 0/417 variables, 1/272 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/417 variables, 0/272 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 5/422 variables, 5/277 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/422 variables, 2/279 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/422 variables, 0/279 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 0/422 variables, 0/279 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 422/422 variables, and 279 constraints, problems are : Problem set: 0 solved, 1 unsolved in 429 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 208/208 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 2/2 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 128/129 variables, 6/6 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/129 variables, 1/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/129 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 20/149 variables, 5/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/149 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 54/203 variables, 18/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/203 variables, 1/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/203 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 214/417 variables, 203/234 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/417 variables, 38/272 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/417 variables, 1/273 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:40] [INFO ] Deduced a trap composed of 16 places in 70 ms of which 5 ms to minimize.
At refinement iteration 12 (INCLUDED_ONLY) 0/417 variables, 1/274 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:40] [INFO ] Deduced a trap along path composed of 5 places in 27 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:40] [INFO ] Deduced a trap along path composed of 4 places in 28 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:40] [INFO ] Deduced a trap along path composed of 5 places in 31 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:30:41] [INFO ] Deduced a trap along path composed of 4 places in 29 ms of which 1 ms to minimize.
At refinement iteration 13 (INCLUDED_ONLY) 0/417 variables, 4/278 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/417 variables, 0/278 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 5/422 variables, 5/283 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/422 variables, 2/285 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/422 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 0/422 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 422/422 variables, and 285 constraints, problems are : Problem set: 0 solved, 1 unsolved in 601 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 208/208 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 3/3 constraints, Known Traps Along Path: 4/4 constraints]
After SMT, in 1035ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 79 ms.
Support contains 1 out of 208 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 208/208 places, 214/214 transitions.
Applied a total of 0 rules in 4 ms. Remains 208 /208 variables (removed 0) and now considering 214/214 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 208/208 places, 214/214 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 208/208 places, 214/214 transitions.
Applied a total of 0 rules in 3 ms. Remains 208 /208 variables (removed 0) and now considering 214/214 (removed 0) transitions.
[2026-05-24 14:30:41] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:30:41] [INFO ] Implicit Places using invariants in 319 ms returned []
[2026-05-24 14:30:41] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:30:41] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:30:43] [INFO ] Implicit Places using invariants and state equation in 2363 ms returned []
Implicit Place search using SMT with State Equation took 2685 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-24 14:30:43] [INFO ] Redundant transitions in 1 ms returned []
Running 213 sub problems to find dead transitions.
[2026-05-24 14:30:43] [INFO ] Invariant cache hit.
[2026-05-24 14:30:43] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/207 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/207 variables, 18/20 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/207 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 3 (OVERLAPS) 1/208 variables, 11/31 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/208 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 5 (OVERLAPS) 214/422 variables, 208/239 constraints. Problems are: Problem set: 0 solved, 213 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/422 variables, 38/277 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/422 variables, 0/277 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 8 (OVERLAPS) 0/422 variables, 0/277 constraints. Problems are: Problem set: 0 solved, 213 unsolved
No progress, stopping.
After SMT solving in domain Real declared 422/422 variables, and 277 constraints, problems are : Problem set: 0 solved, 213 unsolved in 13276 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 208/208 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 213/213 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 213 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/207 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/207 variables, 18/20 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/207 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 3 (OVERLAPS) 1/208 variables, 11/31 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/208 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 5 (OVERLAPS) 214/422 variables, 208/239 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/422 variables, 38/277 constraints. Problems are: Problem set: 0 solved, 213 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/422 variables, 213/490 constraints. Problems are: Problem set: 0 solved, 213 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:07] [INFO ] Deduced a trap composed of 12 places in 57 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:07] [INFO ] Deduced a trap composed of 86 places in 69 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:08] [INFO ] Deduced a trap composed of 4 places in 70 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:08] [INFO ] Deduced a trap composed of 9 places in 67 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:09] [INFO ] Deduced a trap composed of 15 places in 48 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:09] [INFO ] Deduced a trap composed of 18 places in 51 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:09] [INFO ] Deduced a trap composed of 22 places in 44 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:09] [INFO ] Deduced a trap composed of 22 places in 43 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:09] [INFO ] Deduced a trap composed of 26 places in 45 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:09] [INFO ] Deduced a trap composed of 25 places in 46 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:09] [INFO ] Deduced a trap composed of 28 places in 35 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:09] [INFO ] Deduced a trap composed of 29 places in 33 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:12] [INFO ] Deduced a trap composed of 76 places in 79 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:12] [INFO ] Deduced a trap composed of 73 places in 80 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:12] [INFO ] Deduced a trap composed of 83 places in 69 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:12] [INFO ] Deduced a trap composed of 83 places in 71 ms of which 11 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/422 variables, 16/506 constraints. Problems are: Problem set: 0 solved, 213 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:24] [INFO ] Deduced a trap along path composed of 4 places in 40 ms of which 1 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 422/422 variables, and 507 constraints, problems are : Problem set: 0 solved, 213 unsolved in 30014 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 208/208 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 213/213 constraints, Known Traps: 16/16 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 43348ms problems are : Problem set: 0 solved, 213 unsolved
Search for dead transitions found 0 dead transitions in 43350ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 46050 ms. Remains : 208/208 places, 214/214 transitions.
Attempting over-approximation, by ignoring read arcs.
Performed 17 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 0 with 17 Pre rules applied. Total rules applied 0 place count 208 transition count 197
Deduced a syphon composed of 17 places in 0 ms
Reduce places removed 17 places and 0 transitions.
Iterating global reduction 0 with 34 rules applied. Total rules applied 34 place count 191 transition count 197
Discarding 9 places :
Symmetric choice reduction at 0 with 9 rule applications. Total rules 43 place count 182 transition count 188
Iterating global reduction 0 with 9 rules applied. Total rules applied 52 place count 182 transition count 188
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Deduced a syphon composed of 1 places in 1 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 0 with 2 rules applied. Total rules applied 54 place count 181 transition count 187
Free-agglomeration rule (complex) applied 2 times.
Iterating global reduction 0 with 2 rules applied. Total rules applied 56 place count 181 transition count 185
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 58 place count 179 transition count 185
Applied a total of 58 rules in 13 ms. Remains 179 /208 variables (removed 29) and now considering 185/214 (removed 29) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 185 rows 179 cols
[2026-05-24 14:31:27] [INFO ] Computed 31 invariants in 12 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-24 14:31:27] [INFO ] [Real]Absence check using 13 positive place invariants in 8 ms returned sat
[2026-05-24 14:31:27] [INFO ] [Real]Absence check using 13 positive and 18 generalized place invariants in 2 ms returned sat
[2026-05-24 14:31:27] [INFO ] After 77ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-24 14:31:27] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-24 14:31:27] [INFO ] After 8ms SMT Verify possible using 1 Read/Feed constraints in real domain returned unsat :0 sat :1
TRAPS : Iteration 0
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:27] [INFO ] Deduced a trap composed of 48 places in 100 ms of which 24 ms to minimize.
TRAPS : Iteration 1
[2026-05-24 14:31:27] [INFO ] After 128ms SMT Verify possible using trap constraints in real domain returned unsat :0 sat :0 real:1
[2026-05-24 14:31:27] [INFO ] After 259ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-24 14:31:27] [INFO ] [Nat]Absence check using 13 positive place invariants in 9 ms returned sat
[2026-05-24 14:31:27] [INFO ] [Nat]Absence check using 13 positive and 18 generalized place invariants in 2 ms returned sat
[2026-05-24 14:31:27] [INFO ] After 72ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-24 14:31:27] [INFO ] After 7ms SMT Verify possible using 1 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:27] [INFO ] Deduced a trap composed of 46 places in 99 ms of which 24 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:27] [INFO ] Deduced a trap composed of 47 places in 96 ms of which 23 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:27] [INFO ] Deduced a trap composed of 19 places in 83 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:28] [INFO ] Deduced a trap composed of 16 places in 82 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:28] [INFO ] Deduced a trap composed of 48 places in 89 ms of which 19 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:28] [INFO ] Deduced a trap composed of 48 places in 87 ms of which 19 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:28] [INFO ] Deduced a trap composed of 49 places in 93 ms of which 22 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:28] [INFO ] Deduced a trap composed of 46 places in 98 ms of which 26 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:28] [INFO ] Deduced a trap composed of 47 places in 93 ms of which 23 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:28] [INFO ] Deduced a trap composed of 20 places in 81 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:28] [INFO ] Deduced a trap composed of 48 places in 96 ms of which 22 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:28] [INFO ] Deduced a trap composed of 47 places in 98 ms of which 23 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:29] [INFO ] Deduced a trap composed of 48 places in 105 ms of which 33 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:29] [INFO ] Deduced a trap composed of 48 places in 94 ms of which 26 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:29] [INFO ] Deduced a trap composed of 49 places in 84 ms of which 16 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:29] [INFO ] Deduced a trap composed of 49 places in 111 ms of which 42 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:29] [INFO ] Deduced a trap composed of 49 places in 99 ms of which 25 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:29] [INFO ] Deduced a trap composed of 50 places in 95 ms of which 24 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:29] [INFO ] Deduced a trap composed of 50 places in 110 ms of which 30 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:29] [INFO ] Deduced a trap composed of 50 places in 90 ms of which 17 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:29] [INFO ] Deduced a trap composed of 52 places in 86 ms of which 17 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:30] [INFO ] Deduced a trap composed of 23 places in 94 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:30] [INFO ] Deduced a trap composed of 51 places in 93 ms of which 23 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:30] [INFO ] Deduced a trap composed of 53 places in 82 ms of which 20 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:30] [INFO ] Deduced a trap composed of 49 places in 115 ms of which 45 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:30] [INFO ] Deduced a trap composed of 52 places in 88 ms of which 25 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:30] [INFO ] Deduced a trap composed of 53 places in 85 ms of which 20 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:30] [INFO ] Deduced a trap composed of 50 places in 94 ms of which 28 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:30] [INFO ] Deduced a trap composed of 53 places in 104 ms of which 37 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:30] [INFO ] Deduced a trap composed of 54 places in 93 ms of which 20 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:30] [INFO ] Deduced a trap composed of 23 places in 76 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:31] [INFO ] Deduced a trap composed of 51 places in 86 ms of which 19 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:31] [INFO ] Deduced a trap composed of 51 places in 91 ms of which 24 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:31] [INFO ] Deduced a trap composed of 55 places in 104 ms of which 31 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:31] [INFO ] Deduced a trap composed of 55 places in 91 ms of which 24 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:31] [INFO ] Deduced a trap composed of 52 places in 91 ms of which 21 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:31] [INFO ] Deduced a trap composed of 52 places in 97 ms of which 27 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:31] [INFO ] Deduced a trap composed of 56 places in 87 ms of which 21 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:31] [INFO ] Deduced a trap composed of 56 places in 98 ms of which 30 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:31] [INFO ] Deduced a trap composed of 53 places in 88 ms of which 25 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:31] [INFO ] Deduced a trap composed of 54 places in 84 ms of which 20 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:32] [INFO ] Deduced a trap composed of 54 places in 83 ms of which 17 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:32] [INFO ] Deduced a trap composed of 54 places in 85 ms of which 19 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:32] [INFO ] Deduced a trap composed of 57 places in 80 ms of which 17 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:32] [INFO ] Deduced a trap composed of 57 places in 83 ms of which 17 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:32] [INFO ] Deduced a trap composed of 57 places in 96 ms of which 30 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:32] [INFO ] Deduced a trap composed of 58 places in 83 ms of which 19 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:32] [INFO ] Deduced a trap composed of 58 places in 80 ms of which 17 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:32] [INFO ] Deduced a trap composed of 58 places in 86 ms of which 23 ms to minimize.
[2026-05-24 14:31:32] [INFO ] Trap strengthening (SAT) tested/added 50/49 trap constraints in 5067 ms
TRAPS : Iteration 1
[2026-05-24 14:31:32] [INFO ] After 5118ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-24 14:31:32] [INFO ] After 5251ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
Over-approximation ignoring read arcs solved 0 properties in 5538 ms.
RANDOM walk for 40000 steps (5799 resets) in 70 ms. (563 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (3665 resets) in 64 ms. (615 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 780846 steps, run timeout after 3001 ms. (steps per millisecond=260 ) properties seen :0 out of 1
Probabilistic random walk after 780846 steps, saw 390505 distinct states, run finished after 3001 ms. (steps per millisecond=260 ) properties seen :0
// Phase 1: matrix 246 rows 252 cols
[2026-05-24 14:31:35] [INFO ] Computed 43 invariants in 8 ms
[2026-05-24 14:31:35] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 32/33 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/33 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 88/121 variables, 12/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/121 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 69/190 variables, 15/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/190 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 28/218 variables, 9/39 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/218 variables, 0/39 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 236/454 variables, 218/257 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/454 variables, 24/281 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/454 variables, 0/281 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 37/491 variables, 28/309 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/491 variables, 2/311 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/491 variables, 1/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/491 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 2/493 variables, 2/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/493 variables, 2/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/493 variables, 0/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 5/498 variables, 4/320 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/498 variables, 1/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/498 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 0/498 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 498/498 variables, and 321 constraints, problems are : Problem set: 0 solved, 1 unsolved in 290 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 32/33 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/33 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 88/121 variables, 12/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/121 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 69/190 variables, 15/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:36] [INFO ] Deduced a trap composed of 3 places in 50 ms of which 4 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/190 variables, 1/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/190 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 28/218 variables, 9/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/218 variables, 0/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 236/454 variables, 218/258 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/454 variables, 24/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:36] [INFO ] Deduced a trap along path composed of 2 places in 22 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:36] [INFO ] Deduced a trap along path composed of 2 places in 13 ms of which 0 ms to minimize.
At refinement iteration 12 (INCLUDED_ONLY) 0/454 variables, 2/284 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/454 variables, 0/284 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 37/491 variables, 28/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/491 variables, 2/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/491 variables, 1/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/491 variables, 1/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/491 variables, 0/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 2/493 variables, 2/318 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/493 variables, 2/320 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/493 variables, 0/320 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 5/498 variables, 4/324 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (INCLUDED_ONLY) 0/498 variables, 1/325 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (INCLUDED_ONLY) 0/498 variables, 0/325 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 25 (OVERLAPS) 0/498 variables, 0/325 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 498/498 variables, and 325 constraints, problems are : Problem set: 0 solved, 1 unsolved in 466 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 2/2 constraints]
After SMT, in 767ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 98 ms.
Support contains 1 out of 252 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 252/252 places, 246/246 transitions.
Graph (complete) has 834 edges and 252 vertex of which 251 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.0 ms
Discarding 1 places :
Also discarding 0 output 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 2 place count 251 transition count 245
Free-agglomeration rule (complex) applied 24 times.
Iterating global reduction 1 with 24 rules applied. Total rules applied 26 place count 251 transition count 221
Reduce places removed 24 places and 0 transitions.
Iterating post reduction 1 with 24 rules applied. Total rules applied 50 place count 227 transition count 221
Partial Free-agglomeration rule applied 26 times.
Drop transitions (Partial Free agglomeration) removed 26 transitions
Iterating global reduction 2 with 26 rules applied. Total rules applied 76 place count 227 transition count 221
Applied a total of 76 rules in 11 ms. Remains 227 /252 variables (removed 25) and now considering 221/246 (removed 25) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 12 ms. Remains : 227/252 places, 221/246 transitions.
RANDOM walk for 40000 steps (5729 resets) in 83 ms. (476 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40001 steps (3677 resets) in 56 ms. (701 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 792062 steps, run timeout after 3001 ms. (steps per millisecond=263 ) properties seen :0 out of 1
Probabilistic random walk after 792062 steps, saw 396114 distinct states, run finished after 3001 ms. (steps per millisecond=263 ) properties seen :0
// Phase 1: matrix 221 rows 227 cols
[2026-05-24 14:31:39] [INFO ] Computed 43 invariants in 18 ms
[2026-05-24 14:31:39] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 86/87 variables, 8/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/87 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 111/198 variables, 24/32 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:39] [INFO ] Deduced a trap composed of 4 places in 81 ms of which 7 ms to minimize.
At refinement iteration 4 (INCLUDED_ONLY) 0/198 variables, 1/33 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/198 variables, 0/33 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 24/222 variables, 9/42 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:40] [INFO ] Deduced a trap composed of 6 places in 83 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:40] [INFO ] Deduced a trap composed of 7 places in 87 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:40] [INFO ] Deduced a trap composed of 7 places in 77 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:40] [INFO ] Deduced a trap composed of 10 places in 79 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:40] [INFO ] Deduced a trap composed of 10 places in 85 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:40] [INFO ] Deduced a trap composed of 13 places in 92 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:40] [INFO ] Deduced a trap composed of 13 places in 65 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:40] [INFO ] Deduced a trap composed of 16 places in 60 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:40] [INFO ] Deduced a trap composed of 20 places in 57 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:40] [INFO ] Deduced a trap composed of 20 places in 56 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:40] [INFO ] Deduced a trap composed of 22 places in 51 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:40] [INFO ] Deduced a trap composed of 24 places in 57 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:40] [INFO ] Deduced a trap composed of 25 places in 67 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:40] [INFO ] Deduced a trap composed of 35 places in 54 ms of which 5 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/222 variables, 14/56 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/222 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 221/443 variables, 222/278 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/443 variables, 38/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:41] [INFO ] Deduced a trap composed of 3 places in 87 ms of which 4 ms to minimize.
At refinement iteration 11 (INCLUDED_ONLY) 0/443 variables, 1/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/443 variables, 0/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 5/448 variables, 5/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/448 variables, 2/324 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 15 (INCLUDED_ONLY) 0/448 variables, 0/324 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 0/448 variables, 0/324 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 448/448 variables, and 324 constraints, problems are : Problem set: 0 solved, 1 unsolved in 1569 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 227/227 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 16/16 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 86/87 variables, 8/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/87 variables, 1/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/87 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 111/198 variables, 24/33 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/198 variables, 13/46 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/198 variables, 0/46 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 24/222 variables, 9/55 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/222 variables, 2/57 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/222 variables, 0/57 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 221/443 variables, 222/279 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/443 variables, 38/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/443 variables, 1/318 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/443 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 5/448 variables, 5/323 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/448 variables, 2/325 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/448 variables, 0/325 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 0/448 variables, 0/325 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 448/448 variables, and 325 constraints, problems are : Problem set: 0 solved, 1 unsolved in 391 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 227/227 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 16/16 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 1983ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 88 ms.
Support contains 1 out of 227 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 227/227 places, 221/221 transitions.
Applied a total of 0 rules in 3 ms. Remains 227 /227 variables (removed 0) and now considering 221/221 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 227/227 places, 221/221 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 227/227 places, 221/221 transitions.
Applied a total of 0 rules in 3 ms. Remains 227 /227 variables (removed 0) and now considering 221/221 (removed 0) transitions.
[2026-05-24 14:31:41] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:31:42] [INFO ] Implicit Places using invariants in 384 ms returned [43, 48, 69, 96, 102, 124, 129, 149, 154, 175, 181]
[2026-05-24 14:31:42] [INFO ] Actually due to overlaps returned [102, 48, 43, 96]
Discarding 4 places :
Implicit Place search using SMT only with invariants took 386 ms to find 4 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 223/227 places, 221/221 transitions.
Free-agglomeration rule (complex) applied 2 times.
Iterating global reduction 0 with 2 rules applied. Total rules applied 2 place count 223 transition count 219
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 4 place count 221 transition count 219
Applied a total of 4 rules in 10 ms. Remains 221 /223 variables (removed 2) and now considering 219/221 (removed 2) transitions.
// Phase 1: matrix 219 rows 221 cols
[2026-05-24 14:31:42] [INFO ] Computed 39 invariants in 10 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:31:42] [INFO ] Implicit Places using invariants in 343 ms returned [66, 118, 123, 143, 148, 169, 175]
[2026-05-24 14:31:42] [INFO ] Actually due to overlaps returned [123, 66, 118]
Discarding 3 places :
Implicit Place search using SMT only with invariants took 344 ms to find 3 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 2 : 218/227 places, 219/221 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 218 transition count 218
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 217 transition count 218
Partial Free-agglomeration rule applied 1 times.
Drop transitions (Partial Free agglomeration) removed 1 transitions
Iterating global reduction 1 with 1 rules applied. Total rules applied 3 place count 217 transition count 218
Applied a total of 3 rules in 13 ms. Remains 217 /218 variables (removed 1) and now considering 218/219 (removed 1) transitions.
// Phase 1: matrix 218 rows 217 cols
[2026-05-24 14:31:42] [INFO ] Computed 36 invariants in 17 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:31:42] [INFO ] Implicit Places using invariants in 344 ms returned [139, 144, 165, 171]
[2026-05-24 14:31:42] [INFO ] Actually due to overlaps returned [144, 139]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 345 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 3 : 215/227 places, 218/221 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 215 transition count 217
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 214 transition count 217
Applied a total of 2 rules in 9 ms. Remains 214 /215 variables (removed 1) and now considering 217/218 (removed 1) transitions.
// Phase 1: matrix 217 rows 214 cols
[2026-05-24 14:31:42] [INFO ] Computed 34 invariants in 15 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:31:43] [INFO ] Implicit Places using invariants in 304 ms returned [162, 168]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 305 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 4 : 212/227 places, 217/221 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 212 transition count 216
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 211 transition count 216
Applied a total of 2 rules in 11 ms. Remains 211 /212 variables (removed 1) and now considering 216/217 (removed 1) transitions.
// Phase 1: matrix 216 rows 211 cols
[2026-05-24 14:31:43] [INFO ] Computed 32 invariants in 9 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:31:43] [INFO ] Implicit Places using invariants in 274 ms returned []
[2026-05-24 14:31:43] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:31:43] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:31:45] [INFO ] Implicit Places using invariants and state equation in 2220 ms returned []
Implicit Place search using SMT with State Equation took 2496 ms to find 0 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 5 : 211/227 places, 216/221 transitions.
Finished structural reductions in REACHABILITY mode , in 5 iterations and 3923 ms. Remains : 211/227 places, 216/221 transitions.
RANDOM walk for 40000 steps (5754 resets) in 93 ms. (425 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40001 steps (3660 resets) in 47 ms. (833 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 814443 steps, run timeout after 3001 ms. (steps per millisecond=271 ) properties seen :0 out of 1
Probabilistic random walk after 814443 steps, saw 407309 distinct states, run finished after 3001 ms. (steps per millisecond=271 ) properties seen :0
[2026-05-24 14:31:48] [INFO ] Invariant cache hit.
[2026-05-24 14:31:48] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 103/104 variables, 7/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:48] [INFO ] Deduced a trap composed of 3 places in 43 ms of which 2 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/104 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/104 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 1/105 variables, 1/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/105 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 81/186 variables, 15/24 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:49] [INFO ] Deduced a trap composed of 4 places in 72 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:49] [INFO ] Deduced a trap composed of 6 places in 71 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:31:49] [INFO ] Deduced a trap composed of 7 places in 63 ms of which 6 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/186 variables, 3/27 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/186 variables, 0/27 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 20/206 variables, 7/34 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/206 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 216/422 variables, 206/240 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/422 variables, 38/278 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/422 variables, 0/278 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 5/427 variables, 5/283 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/427 variables, 2/285 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/427 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 0/427 variables, 0/285 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 427/427 variables, and 285 constraints, problems are : Problem set: 0 solved, 1 unsolved in 555 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, Generalized P Invariants (flows): 29/29 constraints, State Equation: 211/211 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 4/4 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 103/104 variables, 7/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/104 variables, 1/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/104 variables, 0/8 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (OVERLAPS) 1/105 variables, 1/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/105 variables, 0/9 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 81/186 variables, 15/24 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/186 variables, 3/27 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/186 variables, 0/27 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 20/206 variables, 7/34 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/206 variables, 0/34 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 216/422 variables, 206/240 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/422 variables, 38/278 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/422 variables, 1/279 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/422 variables, 0/279 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 5/427 variables, 5/284 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/427 variables, 2/286 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/427 variables, 0/286 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 0/427 variables, 0/286 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 427/427 variables, and 286 constraints, problems are : Problem set: 0 solved, 1 unsolved in 316 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, Generalized P Invariants (flows): 29/29 constraints, State Equation: 211/211 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 4/4 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 876ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 89 ms.
Support contains 1 out of 211 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 211/211 places, 216/216 transitions.
Applied a total of 0 rules in 3 ms. Remains 211 /211 variables (removed 0) and now considering 216/216 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 211/211 places, 216/216 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 211/211 places, 216/216 transitions.
Applied a total of 0 rules in 3 ms. Remains 211 /211 variables (removed 0) and now considering 216/216 (removed 0) transitions.
[2026-05-24 14:31:49] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:31:50] [INFO ] Implicit Places using invariants in 284 ms returned []
[2026-05-24 14:31:50] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:31:50] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:31:52] [INFO ] Implicit Places using invariants and state equation in 2209 ms returned []
Implicit Place search using SMT with State Equation took 2495 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-24 14:31:52] [INFO ] Redundant transitions in 1 ms returned []
Running 215 sub problems to find dead transitions.
[2026-05-24 14:31:52] [INFO ] Invariant cache hit.
[2026-05-24 14:31:52] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/210 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/210 variables, 23/25 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/210 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 3 (OVERLAPS) 1/211 variables, 1/26 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/211 variables, 6/32 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/211 variables, 0/32 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 6 (OVERLAPS) 216/427 variables, 211/243 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/427 variables, 38/281 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/427 variables, 0/281 constraints. Problems are: Problem set: 0 solved, 215 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (OVERLAPS) 0/427 variables, 0/281 constraints. Problems are: Problem set: 0 solved, 215 unsolved
No progress, stopping.
After SMT solving in domain Real declared 427/427 variables, and 281 constraints, problems are : Problem set: 0 solved, 215 unsolved in 18692 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, Generalized P Invariants (flows): 29/29 constraints, State Equation: 211/211 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 215/215 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 215 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/210 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/210 variables, 23/25 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/210 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 3 (OVERLAPS) 1/211 variables, 1/26 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/211 variables, 6/32 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/211 variables, 0/32 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 6 (OVERLAPS) 216/427 variables, 211/243 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/427 variables, 38/281 constraints. Problems are: Problem set: 0 solved, 215 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/427 variables, 215/496 constraints. Problems are: Problem set: 0 solved, 215 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:21] [INFO ] Deduced a trap composed of 33 places in 37 ms of which 2 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:21] [INFO ] Deduced a trap composed of 4 places in 63 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:22] [INFO ] Deduced a trap composed of 3 places in 74 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:24] [INFO ] Deduced a trap composed of 9 places in 82 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:24] [INFO ] Deduced a trap composed of 12 places in 73 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:25] [INFO ] Deduced a trap composed of 13 places in 83 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:25] [INFO ] Deduced a trap composed of 10 places in 76 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:25] [INFO ] Deduced a trap composed of 13 places in 83 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:26] [INFO ] Deduced a trap composed of 16 places in 83 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:26] [INFO ] Deduced a trap composed of 22 places in 85 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:26] [INFO ] Deduced a trap composed of 39 places in 103 ms of which 30 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:26] [INFO ] Deduced a trap composed of 32 places in 91 ms of which 17 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:27] [INFO ] Deduced a trap composed of 30 places in 32 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:27] [INFO ] Deduced a trap composed of 28 places in 41 ms of which 2 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:27] [INFO ] Deduced a trap composed of 29 places in 87 ms of which 16 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:27] [INFO ] Deduced a trap composed of 37 places in 88 ms of which 21 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:28] [INFO ] Deduced a trap composed of 62 places in 91 ms of which 23 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:28] [INFO ] Deduced a trap composed of 62 places in 75 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:28] [INFO ] Deduced a trap composed of 62 places in 86 ms of which 20 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:28] [INFO ] Deduced a trap composed of 63 places in 82 ms of which 19 ms to minimize.
At refinement iteration 9 (INCLUDED_ONLY) 0/427 variables, 20/516 constraints. Problems are: Problem set: 0 solved, 215 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:35] [INFO ] Deduced a trap composed of 6 places in 66 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:35] [INFO ] Deduced a trap composed of 10 places in 65 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:35] [INFO ] Deduced a trap composed of 41 places in 76 ms of which 16 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:36] [INFO ] Deduced a trap composed of 70 places in 86 ms of which 15 ms to minimize.
At refinement iteration 10 (INCLUDED_ONLY) 0/427 variables, 4/520 constraints. Problems are: Problem set: 0 solved, 215 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 427/427 variables, and 520 constraints, problems are : Problem set: 0 solved, 215 unsolved in 30014 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, Generalized P Invariants (flows): 29/29 constraints, State Equation: 211/211 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 215/215 constraints, Known Traps: 24/24 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 48738ms problems are : Problem set: 0 solved, 215 unsolved
Search for dead transitions found 0 dead transitions in 48738ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 51245 ms. Remains : 211/211 places, 216/216 transitions.
Attempting over-approximation, by ignoring read arcs.
Performed 18 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 0 with 18 Pre rules applied. Total rules applied 0 place count 211 transition count 198
Deduced a syphon composed of 18 places in 0 ms
Reduce places removed 18 places and 0 transitions.
Iterating global reduction 0 with 36 rules applied. Total rules applied 36 place count 193 transition count 198
Discarding 8 places :
Symmetric choice reduction at 0 with 8 rule applications. Total rules 44 place count 185 transition count 190
Iterating global reduction 0 with 8 rules applied. Total rules applied 52 place count 185 transition count 190
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 0 with 2 rules applied. Total rules applied 54 place count 184 transition count 189
Free-agglomeration rule (complex) applied 2 times.
Iterating global reduction 0 with 2 rules applied. Total rules applied 56 place count 184 transition count 187
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 58 place count 182 transition count 187
Applied a total of 58 rules in 10 ms. Remains 182 /211 variables (removed 29) and now considering 187/216 (removed 29) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 187 rows 182 cols
[2026-05-24 14:32:41] [INFO ] Computed 32 invariants in 14 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-24 14:32:41] [INFO ] [Real]Absence check using 14 positive place invariants in 9 ms returned sat
[2026-05-24 14:32:41] [INFO ] [Real]Absence check using 14 positive and 18 generalized place invariants in 3 ms returned sat
[2026-05-24 14:32:41] [INFO ] After 67ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-24 14:32:41] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-24 14:32:41] [INFO ] After 7ms SMT Verify possible using 1 Read/Feed constraints in real domain returned unsat :0 sat :1
TRAPS : Iteration 0
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:41] [INFO ] Deduced a trap composed of 5 places in 70 ms of which 4 ms to minimize.
TRAPS : Iteration 1
[2026-05-24 14:32:41] [INFO ] After 94ms SMT Verify possible using trap constraints in real domain returned unsat :0 sat :0 real:1
[2026-05-24 14:32:41] [INFO ] After 208ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-24 14:32:41] [INFO ] [Nat]Absence check using 14 positive place invariants in 9 ms returned sat
[2026-05-24 14:32:41] [INFO ] [Nat]Absence check using 14 positive and 18 generalized place invariants in 2 ms returned sat
[2026-05-24 14:32:41] [INFO ] After 69ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-24 14:32:41] [INFO ] After 8ms SMT Verify possible using 1 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:41] [INFO ] Deduced a trap composed of 5 places in 69 ms of which 4 ms to minimize.
[2026-05-24 14:32:41] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 82 ms
TRAPS : Iteration 1
[2026-05-24 14:32:41] [INFO ] After 107ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-24 14:32:41] [INFO ] After 238ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
Over-approximation ignoring read arcs solved 0 properties in 472 ms.
RANDOM walk for 40000 steps (5804 resets) in 64 ms. (615 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40001 steps (3681 resets) in 49 ms. (800 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 768788 steps, run timeout after 3001 ms. (steps per millisecond=256 ) properties seen :0 out of 1
Probabilistic random walk after 768788 steps, saw 384477 distinct states, run finished after 3001 ms. (steps per millisecond=256 ) properties seen :0
// Phase 1: matrix 246 rows 252 cols
[2026-05-24 14:32:44] [INFO ] Computed 43 invariants in 14 ms
[2026-05-24 14:32:44] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 33/39 variables, 4/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/39 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 82/121 variables, 10/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/121 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 69/190 variables, 15/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:44] [INFO ] Deduced a trap composed of 3 places in 52 ms of which 3 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/190 variables, 1/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/190 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 28/218 variables, 9/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/218 variables, 0/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 236/454 variables, 218/258 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/454 variables, 24/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/454 variables, 0/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 15 (OVERLAPS) 37/491 variables, 28/310 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/491 variables, 2/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/491 variables, 1/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/491 variables, 0/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 2/493 variables, 2/315 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/493 variables, 2/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/493 variables, 0/317 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 5/498 variables, 4/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (INCLUDED_ONLY) 0/498 variables, 1/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (INCLUDED_ONLY) 0/498 variables, 0/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 25 (OVERLAPS) 0/498 variables, 0/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 498/498 variables, and 322 constraints, problems are : Problem set: 0 solved, 1 unsolved in 256 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 33/39 variables, 4/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/39 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 82/121 variables, 10/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/121 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 69/190 variables, 15/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/190 variables, 1/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/190 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 28/218 variables, 9/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/218 variables, 0/40 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 236/454 variables, 218/258 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/454 variables, 24/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/454 variables, 1/283 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/454 variables, 0/283 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 491/498 variables, and 311 constraints, problems are : Problem set: 0 solved, 1 unsolved in 864 ms.
Refiners :[Positive P Invariants (semi-flows): 0/2 constraints, Generalized P Invariants (flows): 39/41 constraints, State Equation: 246/252 constraints, ReadFeed: 24/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 1150ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 12 ms.
Support contains 1 out of 252 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 252/252 places, 246/246 transitions.
Graph (complete) has 834 edges and 252 vertex of which 251 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.0 ms
Discarding 1 places :
Also discarding 0 output 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 2 place count 251 transition count 245
Free-agglomeration rule (complex) applied 27 times.
Iterating global reduction 1 with 27 rules applied. Total rules applied 29 place count 251 transition count 218
Reduce places removed 27 places and 0 transitions.
Iterating post reduction 1 with 27 rules applied. Total rules applied 56 place count 224 transition count 218
Partial Free-agglomeration rule applied 25 times.
Drop transitions (Partial Free agglomeration) removed 25 transitions
Iterating global reduction 2 with 25 rules applied. Total rules applied 81 place count 224 transition count 218
Applied a total of 81 rules in 11 ms. Remains 224 /252 variables (removed 28) and now considering 218/246 (removed 28) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 11 ms. Remains : 224/252 places, 218/246 transitions.
RANDOM walk for 40000 steps (5714 resets) in 53 ms. (740 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40000 steps (3679 resets) in 32 ms. (1212 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 794290 steps, run timeout after 3001 ms. (steps per millisecond=264 ) properties seen :0 out of 1
Probabilistic random walk after 794290 steps, saw 397238 distinct states, run finished after 3001 ms. (steps per millisecond=264 ) properties seen :0
// Phase 1: matrix 218 rows 224 cols
[2026-05-24 14:32:48] [INFO ] Computed 43 invariants in 18 ms
[2026-05-24 14:32:48] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 124/130 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:48] [INFO ] Deduced a trap composed of 109 places in 68 ms of which 7 ms to minimize.
At refinement iteration 4 (INCLUDED_ONLY) 0/130 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/130 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 12/142 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/142 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 77/219 variables, 35/42 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:49] [INFO ] Deduced a trap composed of 3 places in 91 ms of which 5 ms to minimize.
At refinement iteration 9 (INCLUDED_ONLY) 0/219 variables, 1/43 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/219 variables, 0/43 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 218/437 variables, 219/262 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (INCLUDED_ONLY) 0/437 variables, 38/300 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/437 variables, 0/300 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 5/442 variables, 5/305 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/442 variables, 2/307 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/442 variables, 0/307 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 0/442 variables, 0/307 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 442/442 variables, and 307 constraints, problems are : Problem set: 0 solved, 1 unsolved in 377 ms.
Refiners :[Positive P Invariants (semi-flows): 7/7 constraints, Generalized P Invariants (flows): 36/36 constraints, State Equation: 224/224 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 2/2 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 124/130 variables, 2/3 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/130 variables, 1/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/130 variables, 0/4 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 12/142 variables, 3/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/142 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 77/219 variables, 35/42 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/219 variables, 1/43 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/219 variables, 0/43 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 218/437 variables, 219/262 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/437 variables, 38/300 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/437 variables, 1/301 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:49] [INFO ] Deduced a trap composed of 6 places in 77 ms of which 6 ms to minimize.
At refinement iteration 14 (INCLUDED_ONLY) 0/437 variables, 1/302 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/437 variables, 0/302 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 5/442 variables, 5/307 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/442 variables, 2/309 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/442 variables, 0/309 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 0/442 variables, 0/309 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 442/442 variables, and 309 constraints, problems are : Problem set: 0 solved, 1 unsolved in 503 ms.
Refiners :[Positive P Invariants (semi-flows): 7/7 constraints, Generalized P Invariants (flows): 36/36 constraints, State Equation: 224/224 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 3/3 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 903ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 20 ms.
Support contains 1 out of 224 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 224/224 places, 218/218 transitions.
Applied a total of 0 rules in 3 ms. Remains 224 /224 variables (removed 0) and now considering 218/218 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 224/224 places, 218/218 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 224/224 places, 218/218 transitions.
Applied a total of 0 rules in 3 ms. Remains 224 /224 variables (removed 0) and now considering 218/218 (removed 0) transitions.
[2026-05-24 14:32:49] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:32:50] [INFO ] Implicit Places using invariants in 565 ms returned [43, 48, 69, 74, 94, 100, 121, 126, 146, 151, 172, 178]
[2026-05-24 14:32:50] [INFO ] Actually due to overlaps returned [48, 43]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 567 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 222/224 places, 218/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 222 transition count 217
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 221 transition count 217
Applied a total of 2 rules in 9 ms. Remains 221 /222 variables (removed 1) and now considering 217/218 (removed 1) transitions.
// Phase 1: matrix 217 rows 221 cols
[2026-05-24 14:32:50] [INFO ] Computed 41 invariants in 9 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:32:50] [INFO ] Implicit Places using invariants in 483 ms returned [66, 71, 91, 97, 118, 123, 143, 148, 169, 175]
[2026-05-24 14:32:50] [INFO ] Actually due to overlaps returned [71, 66]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 485 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 2 : 219/224 places, 217/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 219 transition count 216
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 218 transition count 216
Applied a total of 2 rules in 9 ms. Remains 218 /219 variables (removed 1) and now considering 216/217 (removed 1) transitions.
// Phase 1: matrix 216 rows 218 cols
[2026-05-24 14:32:50] [INFO ] Computed 39 invariants in 15 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:32:51] [INFO ] Implicit Places using invariants in 415 ms returned [88, 94, 115, 120, 140, 145, 166, 172]
[2026-05-24 14:32:51] [INFO ] Actually due to overlaps returned [94, 88]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 416 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 3 : 216/224 places, 216/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 216 transition count 215
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 215 transition count 215
Applied a total of 2 rules in 10 ms. Remains 215 /216 variables (removed 1) and now considering 215/216 (removed 1) transitions.
// Phase 1: matrix 215 rows 215 cols
[2026-05-24 14:32:51] [INFO ] Computed 37 invariants in 16 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:32:51] [INFO ] Implicit Places using invariants in 359 ms returned [112, 117, 137, 142, 163, 169]
[2026-05-24 14:32:51] [INFO ] Actually due to overlaps returned [117, 112]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 360 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 4 : 213/224 places, 215/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 213 transition count 214
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 212 transition count 214
Applied a total of 2 rules in 10 ms. Remains 212 /213 variables (removed 1) and now considering 214/215 (removed 1) transitions.
// Phase 1: matrix 214 rows 212 cols
[2026-05-24 14:32:51] [INFO ] Computed 35 invariants in 14 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:32:51] [INFO ] Implicit Places using invariants in 362 ms returned [134, 139, 160, 166]
[2026-05-24 14:32:51] [INFO ] Actually due to overlaps returned [139, 134]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 363 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 5 : 210/224 places, 214/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 210 transition count 213
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 209 transition count 213
Applied a total of 2 rules in 12 ms. Remains 209 /210 variables (removed 1) and now considering 213/214 (removed 1) transitions.
// Phase 1: matrix 213 rows 209 cols
[2026-05-24 14:32:51] [INFO ] Computed 33 invariants in 15 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:32:52] [INFO ] Implicit Places using invariants in 338 ms returned [157, 163]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 339 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 6 : 207/224 places, 213/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 207 transition count 212
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 206 transition count 212
Applied a total of 2 rules in 10 ms. Remains 206 /207 variables (removed 1) and now considering 212/213 (removed 1) transitions.
// Phase 1: matrix 212 rows 206 cols
[2026-05-24 14:32:52] [INFO ] Computed 31 invariants in 12 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:32:52] [INFO ] Implicit Places using invariants in 309 ms returned []
[2026-05-24 14:32:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:32:52] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:32:54] [INFO ] Implicit Places using invariants and state equation in 1944 ms returned []
Implicit Place search using SMT with State Equation took 2254 ms to find 0 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 7 : 206/224 places, 212/218 transitions.
Finished structural reductions in REACHABILITY mode , in 7 iterations and 4849 ms. Remains : 206/224 places, 212/218 transitions.
RANDOM walk for 40000 steps (5737 resets) in 45 ms. (869 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40001 steps (3593 resets) in 54 ms. (727 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 792126 steps, run timeout after 3001 ms. (steps per millisecond=263 ) properties seen :0 out of 1
Probabilistic random walk after 792126 steps, saw 396146 distinct states, run finished after 3001 ms. (steps per millisecond=263 ) properties seen :0
[2026-05-24 14:32:57] [INFO ] Invariant cache hit.
[2026-05-24 14:32:57] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 125/131 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/131 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 20/151 variables, 5/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/151 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 50/201 variables, 17/29 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:57] [INFO ] Deduced a trap composed of 4 places in 86 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:57] [INFO ] Deduced a trap composed of 7 places in 80 ms of which 8 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/201 variables, 2/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/201 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 212/413 variables, 201/232 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/413 variables, 38/270 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (INCLUDED_ONLY) 0/413 variables, 0/270 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 5/418 variables, 5/275 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/418 variables, 2/277 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/418 variables, 0/277 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 0/418 variables, 0/277 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 418/418 variables, and 277 constraints, problems are : Problem set: 0 solved, 1 unsolved in 389 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 206/206 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 2/2 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 5/6 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/6 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 125/131 variables, 6/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/131 variables, 0/7 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 20/151 variables, 5/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/151 variables, 0/12 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 50/201 variables, 17/29 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/201 variables, 2/31 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:58] [INFO ] Deduced a trap composed of 10 places in 91 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:58] [INFO ] Deduced a trap composed of 15 places in 86 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:58] [INFO ] Deduced a trap composed of 16 places in 86 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:58] [INFO ] Deduced a trap composed of 17 places in 94 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:58] [INFO ] Deduced a trap composed of 19 places in 90 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:58] [INFO ] Deduced a trap composed of 20 places in 88 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:58] [INFO ] Deduced a trap composed of 52 places in 96 ms of which 17 ms to minimize.
At refinement iteration 9 (INCLUDED_ONLY) 0/201 variables, 7/38 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/201 variables, 0/38 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 212/413 variables, 201/239 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/413 variables, 38/277 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/413 variables, 1/278 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:59] [INFO ] Deduced a trap composed of 3 places in 77 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:32:59] [INFO ] Deduced a trap composed of 10 places in 69 ms of which 5 ms to minimize.
At refinement iteration 14 (INCLUDED_ONLY) 0/413 variables, 2/280 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/413 variables, 0/280 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 5/418 variables, 5/285 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/418 variables, 2/287 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/418 variables, 0/287 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 0/418 variables, 0/287 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 418/418 variables, and 287 constraints, problems are : Problem set: 0 solved, 1 unsolved in 1268 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 206/206 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 11/11 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 1663ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 22 ms.
Support contains 1 out of 206 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 206/206 places, 212/212 transitions.
Applied a total of 0 rules in 7 ms. Remains 206 /206 variables (removed 0) and now considering 212/212 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 7 ms. Remains : 206/206 places, 212/212 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 206/206 places, 212/212 transitions.
Applied a total of 0 rules in 4 ms. Remains 206 /206 variables (removed 0) and now considering 212/212 (removed 0) transitions.
[2026-05-24 14:32:59] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:32:59] [INFO ] Implicit Places using invariants in 287 ms returned []
[2026-05-24 14:32:59] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:32:59] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:33:01] [INFO ] Implicit Places using invariants and state equation in 1949 ms returned []
Implicit Place search using SMT with State Equation took 2237 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-24 14:33:01] [INFO ] Redundant transitions in 1 ms returned []
Running 211 sub problems to find dead transitions.
[2026-05-24 14:33:01] [INFO ] Invariant cache hit.
[2026-05-24 14:33:01] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/205 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/205 variables, 18/20 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/205 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 3 (OVERLAPS) 1/206 variables, 11/31 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 5 (OVERLAPS) 212/418 variables, 206/237 constraints. Problems are: Problem set: 0 solved, 211 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/418 variables, 38/275 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/418 variables, 0/275 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 8 (OVERLAPS) 0/418 variables, 0/275 constraints. Problems are: Problem set: 0 solved, 211 unsolved
No progress, stopping.
After SMT solving in domain Real declared 418/418 variables, and 275 constraints, problems are : Problem set: 0 solved, 211 unsolved in 13632 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 206/206 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 211/211 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 211 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/205 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/205 variables, 18/20 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/205 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 3 (OVERLAPS) 1/206 variables, 11/31 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/206 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 5 (OVERLAPS) 212/418 variables, 206/237 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/418 variables, 38/275 constraints. Problems are: Problem set: 0 solved, 211 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/418 variables, 211/486 constraints. Problems are: Problem set: 0 solved, 211 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:26] [INFO ] Deduced a trap composed of 4 places in 88 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:27] [INFO ] Deduced a trap composed of 8 places in 79 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:28] [INFO ] Deduced a trap composed of 6 places in 63 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:28] [INFO ] Deduced a trap composed of 7 places in 73 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:29] [INFO ] Deduced a trap composed of 10 places in 63 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:29] [INFO ] Deduced a trap composed of 16 places in 53 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:29] [INFO ] Deduced a trap composed of 10 places in 70 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:33] [INFO ] Deduced a trap composed of 18 places in 55 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:33] [INFO ] Deduced a trap composed of 22 places in 55 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:33] [INFO ] Deduced a trap composed of 19 places in 48 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:33] [INFO ] Deduced a trap composed of 53 places in 102 ms of which 30 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:34] [INFO ] Deduced a trap composed of 53 places in 94 ms of which 21 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:34] [INFO ] Deduced a trap composed of 3 places in 67 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:35] [INFO ] Deduced a trap composed of 21 places in 48 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:35] [INFO ] Deduced a trap composed of 24 places in 50 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:35] [INFO ] Deduced a trap composed of 25 places in 49 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:35] [INFO ] Deduced a trap composed of 28 places in 58 ms of which 10 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/418 variables, 17/503 constraints. Problems are: Problem set: 0 solved, 211 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:42] [INFO ] Deduced a trap composed of 12 places in 59 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:44] [INFO ] Deduced a trap composed of 66 places in 79 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:44] [INFO ] Deduced a trap composed of 69 places in 86 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:44] [INFO ] Deduced a trap composed of 74 places in 82 ms of which 15 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:44] [INFO ] Deduced a trap composed of 77 places in 81 ms of which 18 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:44] [INFO ] Deduced a trap composed of 81 places in 82 ms of which 17 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 418/418 variables, and 509 constraints, problems are : Problem set: 0 solved, 211 unsolved in 30009 ms.
Refiners :[Positive P Invariants (semi-flows): 13/13 constraints, Generalized P Invariants (flows): 18/18 constraints, State Equation: 206/206 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 211/211 constraints, Known Traps: 23/23 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 43698ms problems are : Problem set: 0 solved, 211 unsolved
Search for dead transitions found 0 dead transitions in 43699ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 45949 ms. Remains : 206/206 places, 212/212 transitions.
Attempting over-approximation, by ignoring read arcs.
Performed 18 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 0 with 18 Pre rules applied. Total rules applied 0 place count 206 transition count 194
Deduced a syphon composed of 18 places in 1 ms
Reduce places removed 18 places and 0 transitions.
Iterating global reduction 0 with 36 rules applied. Total rules applied 36 place count 188 transition count 194
Discarding 9 places :
Symmetric choice reduction at 0 with 9 rule applications. Total rules 45 place count 179 transition count 185
Iterating global reduction 0 with 9 rules applied. Total rules applied 54 place count 179 transition count 185
Performed 1 Post agglomeration using F-continuation condition.Transition count delta: 1
Deduced a syphon composed of 1 places in 0 ms
Reduce places removed 1 places and 0 transitions.
Iterating global reduction 0 with 2 rules applied. Total rules applied 56 place count 178 transition count 184
Free-agglomeration rule (complex) applied 2 times.
Iterating global reduction 0 with 2 rules applied. Total rules applied 58 place count 178 transition count 182
Reduce places removed 2 places and 0 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 60 place count 176 transition count 182
Applied a total of 60 rules in 11 ms. Remains 176 /206 variables (removed 30) and now considering 182/212 (removed 30) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 182 rows 176 cols
[2026-05-24 14:33:45] [INFO ] Computed 31 invariants in 10 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-24 14:33:45] [INFO ] [Real]Absence check using 13 positive place invariants in 8 ms returned sat
[2026-05-24 14:33:45] [INFO ] [Real]Absence check using 13 positive and 18 generalized place invariants in 3 ms returned sat
[2026-05-24 14:33:45] [INFO ] After 141ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:1
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-24 14:33:45] [INFO ] [Nat]Absence check using 13 positive place invariants in 8 ms returned sat
[2026-05-24 14:33:45] [INFO ] [Nat]Absence check using 13 positive and 18 generalized place invariants in 3 ms returned sat
[2026-05-24 14:33:45] [INFO ] After 111ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
[2026-05-24 14:33:45] [INFO ] State equation strengthened by 1 read => feed constraints.
[2026-05-24 14:33:45] [INFO ] After 16ms SMT Verify possible using 1 Read/Feed constraints in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-24 14:33:45] [INFO ] After 31ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-24 14:33:45] [INFO ] After 201ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
Over-approximation ignoring read arcs solved 0 properties in 368 ms.
RANDOM walk for 40000 steps (5785 resets) in 66 ms. (597 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40001 steps (3689 resets) in 62 ms. (634 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 770639 steps, run timeout after 3001 ms. (steps per millisecond=256 ) properties seen :0 out of 1
Probabilistic random walk after 770639 steps, saw 385404 distinct states, run finished after 3001 ms. (steps per millisecond=256 ) properties seen :0
// Phase 1: matrix 246 rows 252 cols
[2026-05-24 14:33:48] [INFO ] Computed 43 invariants in 11 ms
[2026-05-24 14:33:48] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 29/30 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/30 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 91/121 variables, 14/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/121 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 69/190 variables, 15/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/190 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 28/218 variables, 9/39 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/218 variables, 0/39 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 236/454 variables, 218/257 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/454 variables, 24/281 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/454 variables, 0/281 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 12 (OVERLAPS) 37/491 variables, 28/309 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/491 variables, 2/311 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/491 variables, 1/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/491 variables, 0/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (OVERLAPS) 2/493 variables, 2/314 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/493 variables, 2/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/493 variables, 0/316 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (OVERLAPS) 5/498 variables, 4/320 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/498 variables, 1/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/498 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (OVERLAPS) 0/498 variables, 0/321 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 498/498 variables, and 321 constraints, problems are : Problem set: 0 solved, 1 unsolved in 380 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 29/30 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/30 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 91/121 variables, 14/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/121 variables, 0/15 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 69/190 variables, 15/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/190 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 28/218 variables, 9/39 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/218 variables, 0/39 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 236/454 variables, 218/257 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/454 variables, 24/281 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/454 variables, 1/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/454 variables, 0/282 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 37/491 variables, 28/310 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/491 variables, 2/312 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/491 variables, 1/313 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:49] [INFO ] Deduced a trap along path composed of 8 places in 28 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:49] [INFO ] Deduced a trap along path composed of 8 places in 31 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:49] [INFO ] Deduced a trap along path composed of 4 places in 31 ms of which 1 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:49] [INFO ] Deduced a trap along path composed of 4 places in 24 ms of which 0 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:49] [INFO ] Deduced a trap along path composed of 4 places in 22 ms of which 0 ms to minimize.
At refinement iteration 16 (INCLUDED_ONLY) 0/491 variables, 5/318 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/491 variables, 0/318 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 2/493 variables, 2/320 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/493 variables, 2/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:50] [INFO ] Deduced a trap along path composed of 2 places in 19 ms of which 0 ms to minimize.
At refinement iteration 20 (INCLUDED_ONLY) 0/493 variables, 0/322 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 5/498 variables, 4/326 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/498 variables, 1/327 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:50] [INFO ] Deduced a trap composed of 19 places in 45 ms of which 3 ms to minimize.
At refinement iteration 23 (INCLUDED_ONLY) 0/498 variables, 1/328 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (INCLUDED_ONLY) 0/498 variables, 1/329 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 25 (INCLUDED_ONLY) 0/498 variables, 0/329 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 26 (OVERLAPS) 0/498 variables, 0/329 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 498/498 variables, and 329 constraints, problems are : Problem set: 0 solved, 1 unsolved in 1670 ms.
Refiners :[Positive P Invariants (semi-flows): 2/2 constraints, Generalized P Invariants (flows): 41/41 constraints, State Equation: 252/252 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 6/6 constraints]
After SMT, in 2066ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 49 ms.
Support contains 1 out of 252 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 252/252 places, 246/246 transitions.
Graph (complete) has 834 edges and 252 vertex of which 251 are kept as prefixes of interest. Removing 1 places using SCC suffix rule.0 ms
Discarding 1 places :
Also discarding 0 output 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 2 place count 251 transition count 245
Free-agglomeration rule (complex) applied 27 times.
Iterating global reduction 1 with 27 rules applied. Total rules applied 29 place count 251 transition count 218
Reduce places removed 27 places and 0 transitions.
Iterating post reduction 1 with 27 rules applied. Total rules applied 56 place count 224 transition count 218
Partial Free-agglomeration rule applied 25 times.
Drop transitions (Partial Free agglomeration) removed 25 transitions
Iterating global reduction 2 with 25 rules applied. Total rules applied 81 place count 224 transition count 218
Applied a total of 81 rules in 18 ms. Remains 224 /252 variables (removed 28) and now considering 218/246 (removed 28) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 18 ms. Remains : 224/252 places, 218/246 transitions.
RANDOM walk for 40000 steps (5814 resets) in 66 ms. (597 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40003 steps (3619 resets) in 47 ms. (833 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 787813 steps, run timeout after 3001 ms. (steps per millisecond=262 ) properties seen :0 out of 1
Probabilistic random walk after 787813 steps, saw 393990 distinct states, run finished after 3001 ms. (steps per millisecond=262 ) properties seen :0
// Phase 1: matrix 218 rows 224 cols
[2026-05-24 14:33:53] [INFO ] Computed 43 invariants in 12 ms
[2026-05-24 14:33:53] [INFO ] State equation strengthened by 38 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 125/126 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/126 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 12/138 variables, 3/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/138 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 81/219 variables, 36/41 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-24 14:33:54] [INFO ] Deduced a trap composed of 3 places in 95 ms of which 5 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/219 variables, 1/42 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/219 variables, 0/42 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 218/437 variables, 219/261 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 9 (INCLUDED_ONLY) 0/437 variables, 38/299 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/437 variables, 0/299 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (OVERLAPS) 5/442 variables, 5/304 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/442 variables, 2/306 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/442 variables, 0/306 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 0/442 variables, 0/306 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 442/442 variables, and 306 constraints, problems are : Problem set: 0 solved, 1 unsolved in 433 ms.
Refiners :[Positive P Invariants (semi-flows): 7/7 constraints, Generalized P Invariants (flows): 36/36 constraints, State Equation: 224/224 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 125/126 variables, 2/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/126 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 12/138 variables, 3/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/138 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 81/219 variables, 36/41 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/219 variables, 1/42 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/219 variables, 0/42 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 218/437 variables, 219/261 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/437 variables, 38/299 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/437 variables, 1/300 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/437 variables, 0/300 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 5/442 variables, 5/305 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/442 variables, 2/307 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/442 variables, 0/307 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 0/442 variables, 0/307 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 442/442 variables, and 307 constraints, problems are : Problem set: 0 solved, 1 unsolved in 492 ms.
Refiners :[Positive P Invariants (semi-flows): 7/7 constraints, Generalized P Invariants (flows): 36/36 constraints, State Equation: 224/224 constraints, ReadFeed: 38/38 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 941ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 42 ms.
Support contains 1 out of 224 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 224/224 places, 218/218 transitions.
Applied a total of 0 rules in 4 ms. Remains 224 /224 variables (removed 0) and now considering 218/218 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 224/224 places, 218/218 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 224/224 places, 218/218 transitions.
Applied a total of 0 rules in 10 ms. Remains 224 /224 variables (removed 0) and now considering 218/218 (removed 0) transitions.
[2026-05-24 14:33:54] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:33:55] [INFO ] Implicit Places using invariants in 532 ms returned [43, 48, 69, 74, 94, 100, 121, 126, 146, 151, 172, 178]
[2026-05-24 14:33:55] [INFO ] Actually due to overlaps returned [48, 43]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 534 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 1 : 222/224 places, 218/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 222 transition count 217
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 221 transition count 217
Applied a total of 2 rules in 9 ms. Remains 221 /222 variables (removed 1) and now considering 217/218 (removed 1) transitions.
// Phase 1: matrix 217 rows 221 cols
[2026-05-24 14:33:55] [INFO ] Computed 41 invariants in 8 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:33:55] [INFO ] Implicit Places using invariants in 488 ms returned [66, 71, 91, 97, 118, 123, 143, 148, 169, 175]
[2026-05-24 14:33:55] [INFO ] Actually due to overlaps returned [71, 66]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 489 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 2 : 219/224 places, 217/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 219 transition count 216
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 218 transition count 216
Applied a total of 2 rules in 12 ms. Remains 218 /219 variables (removed 1) and now considering 216/217 (removed 1) transitions.
// Phase 1: matrix 216 rows 218 cols
[2026-05-24 14:33:55] [INFO ] Computed 39 invariants in 23 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:33:56] [INFO ] Implicit Places using invariants in 434 ms returned [88, 94, 115, 120, 140, 145, 166, 172]
[2026-05-24 14:33:56] [INFO ] Actually due to overlaps returned [94, 88]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 438 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 3 : 216/224 places, 216/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 216 transition count 215
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 215 transition count 215
Applied a total of 2 rules in 12 ms. Remains 215 /216 variables (removed 1) and now considering 215/216 (removed 1) transitions.
// Phase 1: matrix 215 rows 215 cols
[2026-05-24 14:33:56] [INFO ] Computed 37 invariants in 14 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:33:56] [INFO ] Implicit Places using invariants in 365 ms returned [112, 117, 137, 142, 163, 169]
[2026-05-24 14:33:56] [INFO ] Actually due to overlaps returned [117, 112]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 366 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 4 : 213/224 places, 215/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 213 transition count 214
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 212 transition count 214
Applied a total of 2 rules in 10 ms. Remains 212 /213 variables (removed 1) and now considering 214/215 (removed 1) transitions.
// Phase 1: matrix 214 rows 212 cols
[2026-05-24 14:33:56] [INFO ] Computed 35 invariants in 14 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:33:57] [INFO ] Implicit Places using invariants in 354 ms returned [134, 139, 160, 166]
[2026-05-24 14:33:57] [INFO ] Actually due to overlaps returned [139, 134]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 356 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 5 : 210/224 places, 214/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 210 transition count 213
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 209 transition count 213
Applied a total of 2 rules in 9 ms. Remains 209 /210 variables (removed 1) and now considering 213/214 (removed 1) transitions.
// Phase 1: matrix 213 rows 209 cols
[2026-05-24 14:33:57] [INFO ] Computed 33 invariants in 13 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:33:57] [INFO ] Implicit Places using invariants in 325 ms returned [157, 163]
Discarding 2 places :
Implicit Place search using SMT only with invariants took 326 ms to find 2 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 6 : 207/224 places, 213/218 transitions.
Free-agglomeration rule (complex) applied 1 times.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 207 transition count 212
Reduce places removed 1 places and 0 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 2 place count 206 transition count 212
Applied a total of 2 rules in 10 ms. Remains 206 /207 variables (removed 1) and now considering 212/213 (removed 1) transitions.
// Phase 1: matrix 212 rows 206 cols
[2026-05-24 14:33:57] [INFO ] Computed 31 invariants in 13 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:33:57] [INFO ] Implicit Places using invariants in 305 ms returned []
[2026-05-24 14:33:57] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-24 14:33:57] [INFO ] State equation strengthened by 38 read => feed constraints.
[2026-05-24 14:33:59] [INFO ] Implicit Places using invariants and state equation in 1609 ms returned []
Implicit Place search using SMT with State Equation took 1916 ms to find 0 implicit places.
Starting structural reductions in REACHABILITY mode, iteration 7 : 206/224 places, 212/218 transitions.
Finished structural reductions in REACHABILITY mode , in 7 iterations and 4497 ms. Remains : 206/224 places, 212/218 transitions.
RANDOM walk for 40000 steps (5826 resets) in 64 ms. (615 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40000 steps (3674 resets) in 35 ms. (1111 steps per ms) remains 1/1 properties

BK_TIME_CONFINEMENT_REACHED

--------------------
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
+ [[ QuasiLiveness = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution QuasiLiveness -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ sed s/.jar//
++ perl -pe 's/.*\.//g'
++ ls /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/plugins/fr.lip6.move.gal.application.pnmcc_1.0.0.202505121319.jar
+ VERSION=202505121319
+ echo 'Running Version 202505121319'
+ /home/mcc/BenchKit/bin//../itstools/bin//..//itstools/its-tools -pnfolder /home/mcc/execution -examination QuasiLiveness -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 1800

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="DoubleExponent-PT-010"
export BK_EXAMINATION="QuasiLiveness"
export BK_TOOL="gold2025"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="1800"
export BK_MEMORY_CONFINEMENT="16384"
export BK_BIN_PATH="/home/mcc/BenchKit/bin/"

# this is specific to your benchmark or test

export BIN_DIR="$HOME/BenchKit/bin"

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

# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-5973"
echo " Executing tool gold2025"
echo " Input is DoubleExponent-PT-010, examination is QuasiLiveness"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r112-tall-177955701200552"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/DoubleExponent-PT-010.tgz
mv DoubleExponent-PT-010 execution
cd execution
if [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "UpperBounds" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] || [ "QuasiLiveness" = "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 [ "QuasiLiveness" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "QuasiLiveness" != "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 "QuasiLiveness.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 '' QuasiLiveness.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
echo "FORMULA_NAME $x"
done
elif [ "QuasiLiveness" = "ReachabilityDeadlock" ] || [ "QuasiLiveness" = "QuasiLiveness" ] || [ "QuasiLiveness" = "StableMarking" ] || [ "QuasiLiveness" = "Liveness" ] || [ "QuasiLiveness" = "OneSafe" ] ; then
echo "FORMULA_NAME QuasiLiveness"
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 ;