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.r096-smll-177946996500227.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)
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=====================================================================
Generated by BenchKit 2-5973
Executing tool gold2025
Input is DES-PT-10a, examination is QuasiLiveness
Time confinement is 1800 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r096-smll-177946996500227
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 532K
-rw-r--r-- 1 mcc users 7.3K Mar 6 18:25 CTLCardinality.txt
-rw-r--r-- 1 mcc users 81K Mar 6 18:25 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.1K Mar 6 18:25 CTLFireability.txt
-rw-r--r-- 1 mcc users 44K Mar 6 18:25 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K Mar 3 18:30 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 3.2K Mar 15 08:56 LTLCardinality.txt
-rw-r--r-- 1 mcc users 23K Mar 15 08:56 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.1K Mar 15 08:56 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K Mar 15 08:56 LTLFireability.xml
-rw-r--r-- 1 mcc users 13K Mar 6 18:25 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 148K Mar 6 18:25 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 9.5K Mar 6 18:25 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 87K Mar 6 18:25 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.5K Mar 15 08:56 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.5K Mar 15 08:56 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 43K 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 1779532695206

Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=QuasiLiveness
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=1800
BK_INPUT=DES-PT-10a
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
QuasiLiveness PT
Running Version 202505121319
[2026-05-23 10:38:17] [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]
[2026-05-23 10:38:17] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-23 10:38:17] [INFO ] Load time of PNML (sax parser for PT used): 154 ms
[2026-05-23 10:38:17] [INFO ] Transformed 155 places.
[2026-05-23 10:38:17] [INFO ] Transformed 112 transitions.
[2026-05-23 10:38:17] [INFO ] Found NUPN structural information;
[2026-05-23 10:38:18] [INFO ] Parsed PT model containing 155 places and 112 transitions and 552 arcs in 380 ms.
Starting structural reductions in LIVENESS mode, iteration 0 : 155/155 places, 112/112 transitions.
Ensure Unique test removed 14 transitions
Reduce isomorphic transitions removed 14 transitions.
Iterating post reduction 0 with 14 rules applied. Total rules applied 14 place count 155 transition count 98
Applied a total of 14 rules in 42 ms. Remains 155 /155 variables (removed 0) and now considering 98/112 (removed 14) transitions.
// Phase 1: matrix 98 rows 155 cols
[2026-05-23 10:38:18] [INFO ] Computed 59 invariants in 18 ms
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 10:38:18] [INFO ] Implicit Places using invariants in 777 ms returned [52]
Discarding 1 places :
Implicit Place search using SMT only with invariants took 867 ms to find 1 implicit places.
Starting structural reductions in LIVENESS mode, iteration 1 : 154/155 places, 98/112 transitions.
Applied a total of 0 rules in 9 ms. Remains 154 /154 variables (removed 0) and now considering 98/98 (removed 0) transitions.
Finished structural reductions in LIVENESS mode , in 2 iterations and 950 ms. Remains : 154/155 places, 98/112 transitions.
Discarding 9 transitions out of 98. Remains 89
Initial state reduction rules removed 1 formulas.
RANDOM walk for 40000 steps (914 resets) in 2334 ms. (17 steps per ms) remains 25/88 properties
BEST_FIRST walk for 4004 steps (17 resets) in 101 ms. (39 steps per ms) remains 25/25 properties
BEST_FIRST walk for 4001 steps (17 resets) in 76 ms. (51 steps per ms) remains 25/25 properties
BEST_FIRST walk for 4002 steps (15 resets) in 51 ms. (76 steps per ms) remains 25/25 properties
BEST_FIRST walk for 4003 steps (16 resets) in 89 ms. (44 steps per ms) remains 25/25 properties
BEST_FIRST walk for 4004 steps (16 resets) in 56 ms. (70 steps per ms) remains 25/25 properties
BEST_FIRST walk for 4003 steps (15 resets) in 68 ms. (58 steps per ms) remains 25/25 properties
BEST_FIRST walk for 4002 steps (17 resets) in 63 ms. (62 steps per ms) remains 25/25 properties
BEST_FIRST walk for 4003 steps (17 resets) in 43 ms. (90 steps per ms) remains 25/25 properties
BEST_FIRST walk for 4003 steps (18 resets) in 40 ms. (97 steps per ms) remains 25/25 properties
BEST_FIRST walk for 4003 steps (19 resets) in 45 ms. (87 steps per ms) remains 25/25 properties
[2026-05-23 10:38:20] [INFO ] Flatten gal took : 188 ms
BEST_FIRST walk for 4004 steps (17 resets) in 53 ms. (74 steps per ms) remains 25/25 properties
BEST_FIRST walk for 4002 steps (18 resets) in 49 ms. (80 steps per ms) remains 25/25 properties
BEST_FIRST walk for 4003 steps (19 resets) in 45 ms. (87 steps per ms) remains 25/25 properties
BEST_FIRST walk for 4004 steps (20 resets) in 58 ms. (67 steps per ms) remains 25/25 properties
[2026-05-23 10:38:20] [INFO ] Flatten gal took : 74 ms
BEST_FIRST walk for 4003 steps (19 resets) in 21 ms. (181 steps per ms) remains 25/25 properties
BEST_FIRST walk for 4003 steps (21 resets) in 16 ms. (235 steps per ms) remains 25/25 properties
BEST_FIRST walk for 4003 steps (22 resets) in 22 ms. (174 steps per ms) remains 25/25 properties
BEST_FIRST walk for 4004 steps (23 resets) in 19 ms. (200 steps per ms) remains 25/25 properties
BEST_FIRST walk for 4003 steps (24 resets) in 18 ms. (210 steps per ms) remains 25/25 properties
BEST_FIRST walk for 4002 steps (20 resets) in 23 ms. (166 steps per ms) remains 25/25 properties
BEST_FIRST walk for 4004 steps (20 resets) in 16 ms. (235 steps per ms) remains 25/25 properties
[2026-05-23 10:38:20] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality12374317089202688308.gal : 27 ms
BEST_FIRST walk for 4003 steps (18 resets) in 32 ms. (121 steps per ms) remains 25/25 properties
[2026-05-23 10:38:20] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality13805599262274864417.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/ReachabilityCardinality12374317089202688308.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality13805599262274864417.prop' '--nowitness' '--gen-order' 'FOLLOW'
BEST_FIRST walk for 4003 steps (20 resets) in 35 ms. (111 steps per ms) remains 25/25 properties

BEST_FIRST walk for 4003 steps (19 resets) in 17 ms. (222 steps per ms) remains 25/25 properties
BEST_FIRST walk for 4003 steps (19 resets) in 14 ms. (266 steps per ms) remains 25/25 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 ...330
// Phase 1: matrix 98 rows 154 cols
Loading property file /tmp/ReachabilityCardinality13805599262274864417.prop.
[2026-05-23 10:38:20] [INFO ] Computed 58 invariants in 13 ms
SDD proceeding with computation,25 properties remain. new max is 4
SDD size :1 after 3
SDD proceeding with computation,25 properties remain. new max is 8
SDD size :3 after 5
SDD proceeding with computation,25 properties remain. new max is 16
SDD size :5 after 12
SDD proceeding with computation,25 properties remain. new max is 32
SDD size :12 after 56
SDD proceeding with computation,25 properties remain. new max is 64
SDD size :56 after 73
SDD proceeding with computation,25 properties remain. new max is 128
SDD size :73 after 657
SDD proceeding with computation,25 properties remain. new max is 256
SDD size :657 after 1957
SDD proceeding with computation,25 properties remain. new max is 512
SDD size :1957 after 4761
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
SDD proceeding with computation,25 properties remain. new max is 1024
SDD size :4761 after 436881
At refinement iteration 0 (INCLUDED_ONLY) 0/30 variables, 30/30 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/30 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 2 (OVERLAPS) 10/40 variables, 6/36 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/40 variables, 10/46 constraints. Problems are: Problem set: 0 solved, 25 unsolved
SDD proceeding with computation,25 properties remain. new max is 2048
SDD size :436881 after 1.63016e+06
At refinement iteration 4 (INCLUDED_ONLY) 0/40 variables, 0/46 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 5 (OVERLAPS) 64/104 variables, 27/73 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/104 variables, 64/137 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/104 variables, 0/137 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 8 (OVERLAPS) 37/141 variables, 23/160 constraints. Problems are: Problem set: 0 solved, 25 unsolved
SDD proceeding with computation,25 properties remain. new max is 4096
All remaining problems are real, not stopping.
At refinement iteration 9 (INCLUDED_ONLY) 0/141 variables, 37/197 constraints. Problems are: Problem set: 0 solved, 25 unsolved
SDD size :1.63016e+06 after 7.78442e+06
At refinement iteration 10 (INCLUDED_ONLY) 0/141 variables, 0/197 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 11 (OVERLAPS) 6/147 variables, 2/199 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/147 variables, 6/205 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/147 variables, 0/205 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 14 (OVERLAPS) 97/244 variables, 147/352 constraints. Problems are: Problem set: 0 solved, 25 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:38:23] [INFO ] Deduced a trap composed of 9 places in 130 ms of which 21 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:38:24] [INFO ] Deduced a trap composed of 10 places in 526 ms of which 4 ms to minimize.
At refinement iteration 15 (INCLUDED_ONLY) 0/244 variables, 2/354 constraints. Problems are: Problem set: 0 solved, 25 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:38:24] [INFO ] Deduced a trap composed of 12 places in 178 ms of which 83 ms to minimize.
At refinement iteration 16 (INCLUDED_ONLY) 0/244 variables, 1/355 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/244 variables, 0/355 constraints. Problems are: Problem set: 0 solved, 25 unsolved
SDD proceeding with computation,25 properties remain. new max is 8192
At refinement iteration 18 (OVERLAPS) 8/252 variables, 7/362 constraints. Problems are: Problem set: 0 solved, 25 unsolved
SDD size :7.78442e+06 after 1.03826e+07
At refinement iteration 19 (INCLUDED_ONLY) 0/252 variables, 7/369 constraints. Problems are: Problem set: 0 solved, 25 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 252/252 variables, and 369 constraints, problems are : Problem set: 0 solved, 25 unsolved in 5017 ms.
Refiners :[Domain max(s): 154/154 constraints, Positive P Invariants (semi-flows): 33/33 constraints, Generalized P Invariants (flows): 25/25 constraints, State Equation: 154/154 constraints, PredecessorRefiner: 25/25 constraints, Known Traps: 3/3 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 25 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/30 variables, 30/30 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/30 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 2 (OVERLAPS) 10/40 variables, 6/36 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/40 variables, 10/46 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/40 variables, 0/46 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 5 (OVERLAPS) 64/104 variables, 27/73 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/104 variables, 64/137 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/104 variables, 1/138 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/104 variables, 0/138 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 9 (OVERLAPS) 37/141 variables, 23/161 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/141 variables, 37/198 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/141 variables, 2/200 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/141 variables, 0/200 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 13 (OVERLAPS) 6/147 variables, 2/202 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/147 variables, 6/208 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/147 variables, 0/208 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 16 (OVERLAPS) 97/244 variables, 147/355 constraints. Problems are: Problem set: 0 solved, 25 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/244 variables, 9/364 constraints. Problems are: Problem set: 0 solved, 25 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 244/252 variables, and 364 constraints, problems are : Problem set: 0 solved, 25 unsolved in 5015 ms.
Refiners :[Domain max(s): 147/154 constraints, Positive P Invariants (semi-flows): 33/33 constraints, Generalized P Invariants (flows): 25/25 constraints, State Equation: 147/154 constraints, PredecessorRefiner: 9/25 constraints, Known Traps: 3/3 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 10182ms problems are : Problem set: 0 solved, 25 unsolved
Skipping Parikh replay, no witness traces provided.
Support contains 30 out of 154 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 154/154 places, 98/98 transitions.
Drop transitions (Empty/Sink Transition effects.) removed 2 transitions
Reduce isomorphic transitions removed 2 transitions.
Iterating post reduction 0 with 2 rules applied. Total rules applied 2 place count 154 transition count 96
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 3 place count 153 transition count 95
Iterating global reduction 1 with 1 rules applied. Total rules applied 4 place count 153 transition count 95
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 8 place count 153 transition count 95
Applied a total of 8 rules in 75 ms. Remains 153 /154 variables (removed 1) and now considering 95/98 (removed 3) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 75 ms. Remains : 153/154 places, 95/98 transitions.
SDD proceeding with computation,25 properties remain. new max is 16384
SDD size :4.5513e+07 after 6.36458e+07
RANDOM walk for 4000000 steps (53856 resets) in 29548 ms. (135 steps per ms) remains 14/25 properties
BEST_FIRST walk for 4000002 steps (9093 resets) in 8497 ms. (470 steps per ms) remains 14/14 properties
BEST_FIRST walk for 4000002 steps (9130 resets) in 7495 ms. (533 steps per ms) remains 14/14 properties
BEST_FIRST walk for 4000004 steps (9089 resets) in 8065 ms. (495 steps per ms) remains 14/14 properties
SDD proceeding with computation,25 properties remain. new max is 32768
SDD size :1.26571e+08 after 2.10778e+08
BEST_FIRST walk for 4000004 steps (8983 resets) in 8277 ms. (483 steps per ms) remains 14/14 properties
BEST_FIRST walk for 4000004 steps (9083 resets) in 7672 ms. (521 steps per ms) remains 14/14 properties
BEST_FIRST walk for 4000004 steps (9082 resets) in 7737 ms. (516 steps per ms) remains 13/14 properties
BEST_FIRST walk for 4000004 steps (6906 resets) in 7498 ms. (533 steps per ms) remains 12/13 properties
BEST_FIRST walk for 4000003 steps (6922 resets) in 7491 ms. (533 steps per ms) remains 12/12 properties
BEST_FIRST walk for 4000004 steps (6984 resets) in 7302 ms. (547 steps per ms) remains 12/12 properties
Reachability property qltransition_45 is true.
BEST_FIRST walk for 4000002 steps (29145 resets) in 8112 ms. (493 steps per ms) remains 12/12 properties
BEST_FIRST walk for 4000004 steps (29112 resets) in 8058 ms. (496 steps per ms) remains 12/12 properties
SDD proceeding with computation,24 properties remain. new max is 32768
SDD size :2.10778e+08 after 5.75579e+08
BEST_FIRST walk for 4000002 steps (29093 resets) in 7681 ms. (520 steps per ms) remains 12/12 properties
BEST_FIRST walk for 4000004 steps (29128 resets) in 8478 ms. (471 steps per ms) remains 12/12 properties
// Phase 1: matrix 95 rows 153 cols
[2026-05-23 10:39:08] [INFO ] Computed 60 invariants in 9 ms
[2026-05-23 10:39:08] [INFO ] State equation strengthened by 2 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/16 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 9/25 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/25 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 74/99 variables, 31/36 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/99 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (OVERLAPS) 44/143 variables, 24/60 constraints. Problems are: Problem set: 0 solved, 12 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/143 variables, 0/60 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (OVERLAPS) 95/238 variables, 143/203 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/238 variables, 2/205 constraints. Problems are: Problem set: 0 solved, 12 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:39:09] [INFO ] Deduced a trap composed of 8 places in 124 ms of which 10 ms to minimize.
At refinement iteration 9 (INCLUDED_ONLY) 0/238 variables, 1/206 constraints. Problems are: Problem set: 0 solved, 12 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:39:09] [INFO ] Deduced a trap composed of 12 places in 119 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:39:09] [INFO ] Deduced a trap composed of 9 places in 53 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:39:09] [INFO ] Deduced a trap composed of 11 places in 66 ms of which 7 ms to minimize.
At refinement iteration 10 (INCLUDED_ONLY) 0/238 variables, 3/209 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/238 variables, 0/209 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 12 (OVERLAPS) 10/248 variables, 10/219 constraints. Problems are: Problem set: 0 solved, 12 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:39:10] [INFO ] Deduced a trap composed of 16 places in 95 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:39:10] [INFO ] Deduced a trap composed of 8 places in 111 ms of which 12 ms to minimize.
At refinement iteration 13 (INCLUDED_ONLY) 0/248 variables, 2/221 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/248 variables, 0/221 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 15 (OVERLAPS) 0/248 variables, 0/221 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Real declared 248/248 variables, and 221 constraints, problems are : Problem set: 0 solved, 12 unsolved in 2454 ms.
Refiners :[Positive P Invariants (semi-flows): 36/36 constraints, Generalized P Invariants (flows): 24/24 constraints, State Equation: 153/153 constraints, ReadFeed: 2/2 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 6/6 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 12 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/16 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 1 (OVERLAPS) 9/25 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/25 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 3 (OVERLAPS) 74/99 variables, 31/36 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/99 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 5 (OVERLAPS) 44/143 variables, 24/60 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/143 variables, 6/66 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/143 variables, 0/66 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 8 (OVERLAPS) 95/238 variables, 143/209 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/238 variables, 2/211 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/238 variables, 5/216 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/238 variables, 0/216 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 12 (OVERLAPS) 10/248 variables, 10/226 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/248 variables, 7/233 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/248 variables, 0/233 constraints. Problems are: Problem set: 0 solved, 12 unsolved
At refinement iteration 15 (OVERLAPS) 0/248 variables, 0/233 constraints. Problems are: Problem set: 0 solved, 12 unsolved
No progress, stopping.
After SMT solving in domain Int declared 248/248 variables, and 233 constraints, problems are : Problem set: 0 solved, 12 unsolved in 4412 ms.
Refiners :[Positive P Invariants (semi-flows): 36/36 constraints, Generalized P Invariants (flows): 24/24 constraints, State Equation: 153/153 constraints, ReadFeed: 2/2 constraints, PredecessorRefiner: 12/12 constraints, Known Traps: 6/6 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 6905ms problems are : Problem set: 0 solved, 12 unsolved
Reachability property qltransition_46 is true.
Parikh walk visited 0 properties in 17730 ms.
Support contains 16 out of 153 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 153/153 places, 95/95 transitions.
Partial Free-agglomeration rule applied 1 times.
Drop transitions (Partial Free agglomeration) removed 1 transitions
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 153 transition count 95
Applied a total of 1 rules in 34 ms. Remains 153 /153 variables (removed 0) and now considering 95/95 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 35 ms. Remains : 153/153 places, 95/95 transitions.
SDD proceeding with computation,23 properties remain. new max is 32768
SDD size :5.75579e+08 after 9.63889e+08
RANDOM walk for 4000000 steps (53878 resets) in 21042 ms. (190 steps per ms) remains 11/12 properties
BEST_FIRST walk for 4000003 steps (9094 resets) in 7178 ms. (557 steps per ms) remains 11/11 properties
BEST_FIRST walk for 4000004 steps (9074 resets) in 7060 ms. (566 steps per ms) remains 11/11 properties
BEST_FIRST walk for 4000004 steps (9137 resets) in 7792 ms. (513 steps per ms) remains 11/11 properties
BEST_FIRST walk for 4000003 steps (9091 resets) in 7205 ms. (555 steps per ms) remains 11/11 properties
BEST_FIRST walk for 4000004 steps (9153 resets) in 7091 ms. (564 steps per ms) remains 11/11 properties
SDD proceeding with computation,23 properties remain. new max is 65536
SDD size :9.63889e+08 after 1.41146e+09
BEST_FIRST walk for 4000003 steps (7020 resets) in 7098 ms. (563 steps per ms) remains 11/11 properties
BEST_FIRST walk for 4000003 steps (6917 resets) in 7269 ms. (550 steps per ms) remains 11/11 properties
BEST_FIRST walk for 4000004 steps (6880 resets) in 7855 ms. (509 steps per ms) remains 11/11 properties
BEST_FIRST walk for 4000004 steps (29127 resets) in 7713 ms. (518 steps per ms) remains 11/11 properties
BEST_FIRST walk for 4000002 steps (29130 resets) in 7805 ms. (512 steps per ms) remains 11/11 properties
BEST_FIRST walk for 4000004 steps (29110 resets) in 7733 ms. (517 steps per ms) remains 11/11 properties
Reachability property qltransition_47 is true.
SDD proceeding with computation,22 properties remain. new max is 65536
SDD size :1.41146e+09 after 1.98573e+09
Interrupted probabilistic random walk after 19347976 steps, run timeout after 90001 ms. (steps per millisecond=214 ) properties seen :0 out of 11
Probabilistic random walk after 19347976 steps, saw 2378145 distinct states, run finished after 90013 ms. (steps per millisecond=214 ) properties seen :0
// Phase 1: matrix 95 rows 153 cols
[2026-05-23 10:41:33] [INFO ] Computed 60 invariants in 3 ms
[2026-05-23 10:41:33] [INFO ] State equation strengthened by 3 read => feed constraints.
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 1 (OVERLAPS) 9/24 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/24 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 3 (OVERLAPS) 74/98 variables, 31/36 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/98 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 5 (OVERLAPS) 45/143 variables, 24/60 constraints. Problems are: Problem set: 0 solved, 11 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/143 variables, 0/60 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 7 (OVERLAPS) 95/238 variables, 143/203 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/238 variables, 3/206 constraints. Problems are: Problem set: 0 solved, 11 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:41:33] [INFO ] Deduced a trap composed of 12 places in 59 ms of which 7 ms to minimize.
At refinement iteration 9 (INCLUDED_ONLY) 0/238 variables, 1/207 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/238 variables, 0/207 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 11 (OVERLAPS) 10/248 variables, 10/217 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/248 variables, 0/217 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 13 (OVERLAPS) 0/248 variables, 0/217 constraints. Problems are: Problem set: 0 solved, 11 unsolved
No progress, stopping.
After SMT solving in domain Real declared 248/248 variables, and 217 constraints, problems are : Problem set: 0 solved, 11 unsolved in 1111 ms.
Refiners :[Positive P Invariants (semi-flows): 36/36 constraints, Generalized P Invariants (flows): 24/24 constraints, State Equation: 153/153 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 11/11 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 11 unsolved
Starting Z3 with timeout 75.0 s and query timeout 7500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/15 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 1 (OVERLAPS) 9/24 variables, 5/5 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/24 variables, 0/5 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 3 (OVERLAPS) 74/98 variables, 31/36 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/98 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 5 (OVERLAPS) 45/143 variables, 24/60 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/143 variables, 1/61 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/143 variables, 0/61 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 8 (OVERLAPS) 95/238 variables, 143/204 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/238 variables, 3/207 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/238 variables, 5/212 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/238 variables, 0/212 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 12 (OVERLAPS) 10/248 variables, 10/222 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/248 variables, 6/228 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/248 variables, 0/228 constraints. Problems are: Problem set: 0 solved, 11 unsolved
At refinement iteration 15 (OVERLAPS) 0/248 variables, 0/228 constraints. Problems are: Problem set: 0 solved, 11 unsolved
No progress, stopping.
After SMT solving in domain Int declared 248/248 variables, and 228 constraints, problems are : Problem set: 0 solved, 11 unsolved in 4329 ms.
Refiners :[Positive P Invariants (semi-flows): 36/36 constraints, Generalized P Invariants (flows): 24/24 constraints, State Equation: 153/153 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 11/11 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 5456ms problems are : Problem set: 0 solved, 11 unsolved
Parikh walk visited 10 properties in 2651 ms.
Support contains 2 out of 153 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 153/153 places, 95/95 transitions.
Applied a total of 0 rules in 9 ms. Remains 153 /153 variables (removed 0) and now considering 95/95 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 9 ms. Remains : 153/153 places, 95/95 transitions.
RANDOM walk for 4000000 steps (53771 resets) in 11107 ms. (360 steps per ms) remains 1/1 properties
BEST_FIRST walk for 4000004 steps (29119 resets) in 5237 ms. (763 steps per ms) remains 1/1 properties
Reachability property qltransition_48 is true.
Interrupted probabilistic random walk after 5793812 steps, run timeout after 12001 ms. (steps per millisecond=482 ) properties seen :0 out of 1
Probabilistic random walk after 5793812 steps, saw 747611 distinct states, run finished after 12001 ms. (steps per millisecond=482 ) properties seen :0
[2026-05-23 10:41:57] [INFO ] Invariant cache hit.
[2026-05-23 10:41:57] [INFO ] State equation strengthened by 3 read => feed constraints.
Starting Z3 with timeout 90.0 s and query timeout 9000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 83/88 variables, 35/36 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/88 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 55/143 variables, 24/60 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/143 variables, 0/60 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 95/238 variables, 143/203 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/238 variables, 3/206 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/238 variables, 0/206 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 10/248 variables, 10/216 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/248 variables, 0/216 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 0/248 variables, 0/216 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 248/248 variables, and 216 constraints, problems are : Problem set: 0 solved, 1 unsolved in 157 ms.
Refiners :[Positive P Invariants (semi-flows): 36/36 constraints, Generalized P Invariants (flows): 24/24 constraints, State Equation: 153/153 constraints, ReadFeed: 3/3 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 90.0 s and query timeout 9000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 83/88 variables, 35/36 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/88 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 55/143 variables, 24/60 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/143 variables, 0/60 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 95/238 variables, 143/203 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/238 variables, 3/206 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/238 variables, 0/206 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 10/248 variables, 10/216 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/248 variables, 1/217 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/248 variables, 0/217 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 0/248 variables, 0/217 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 248/248 variables, and 217 constraints, problems are : Problem set: 0 solved, 1 unsolved in 283 ms.
Refiners :[Positive P Invariants (semi-flows): 36/36 constraints, Generalized P Invariants (flows): 24/24 constraints, State Equation: 153/153 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 448ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 103 ms.
Support contains 2 out of 153 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 153/153 places, 95/95 transitions.
Applied a total of 0 rules in 11 ms. Remains 153 /153 variables (removed 0) and now considering 95/95 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 11 ms. Remains : 153/153 places, 95/95 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 153/153 places, 95/95 transitions.
Applied a total of 0 rules in 8 ms. Remains 153 /153 variables (removed 0) and now considering 95/95 (removed 0) transitions.
[2026-05-23 10:41:58] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 10:41:58] [INFO ] Implicit Places using invariants in 183 ms returned []
[2026-05-23 10:41:58] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 10:41:58] [INFO ] State equation strengthened by 3 read => feed constraints.
[2026-05-23 10:41:58] [INFO ] Implicit Places using invariants and state equation in 319 ms returned []
Implicit Place search using SMT with State Equation took 507 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-23 10:41:58] [INFO ] Redundant transitions in 2 ms returned []
Running 94 sub problems to find dead transitions.
[2026-05-23 10:41:58] [INFO ] Invariant cache hit.
[2026-05-23 10:41:58] [INFO ] State equation strengthened by 3 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/152 variables, 11/11 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/152 variables, 0/11 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 2 (OVERLAPS) 1/153 variables, 36/47 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/153 variables, 13/60 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/153 variables, 0/60 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 5 (OVERLAPS) 95/248 variables, 153/213 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/248 variables, 3/216 constraints. Problems are: Problem set: 0 solved, 94 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:42:01] [INFO ] Deduced a trap composed of 6 places in 33 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:42:01] [INFO ] Deduced a trap composed of 12 places in 56 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:42:01] [INFO ] Deduced a trap composed of 9 places in 47 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:42:01] [INFO ] Deduced a trap composed of 11 places in 46 ms of which 3 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/248 variables, 4/220 constraints. Problems are: Problem set: 0 solved, 94 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:42:01] [INFO ] Deduced a trap composed of 7 places in 31 ms of which 2 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/248 variables, 1/221 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/248 variables, 0/221 constraints. Problems are: Problem set: 0 solved, 94 unsolved
SDD proceeding with computation,21 properties remain. new max is 65536
At refinement iteration 10 (OVERLAPS) 0/248 variables, 0/221 constraints. Problems are: Problem set: 0 solved, 94 unsolved
No progress, stopping.
After SMT solving in domain Real declared 248/248 variables, and 221 constraints, problems are : Problem set: 0 solved, 94 unsolved in 5578 ms.
Refiners :[Positive P Invariants (semi-flows): 36/36 constraints, Generalized P Invariants (flows): 24/24 constraints, State Equation: 153/153 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 94/94 constraints, Known Traps: 5/5 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 94 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/152 variables, 11/11 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/152 variables, 0/11 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 2 (OVERLAPS) 1/153 variables, 36/47 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/153 variables, 13/60 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/153 variables, 5/65 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/153 variables, 0/65 constraints. Problems are: Problem set: 0 solved, 94 unsolved
SDD size :1.98573e+09 after 2.62375e+09
At refinement iteration 6 (OVERLAPS) 95/248 variables, 153/218 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/248 variables, 3/221 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/248 variables, 94/315 constraints. Problems are: Problem set: 0 solved, 94 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:42:09] [INFO ] Deduced a trap composed of 17 places in 52 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:42:10] [INFO ] Deduced a trap composed of 15 places in 61 ms of which 6 ms to minimize.
At refinement iteration 9 (INCLUDED_ONLY) 0/248 variables, 2/317 constraints. Problems are: Problem set: 0 solved, 94 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:42:16] [INFO ] Deduced a trap composed of 8 places in 43 ms of which 4 ms to minimize.
At refinement iteration 10 (INCLUDED_ONLY) 0/248 variables, 1/318 constraints. Problems are: Problem set: 0 solved, 94 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:42:29] [INFO ] Deduced a trap composed of 16 places in 62 ms of which 9 ms to minimize.
At refinement iteration 11 (INCLUDED_ONLY) 0/248 variables, 1/319 constraints. Problems are: Problem set: 0 solved, 94 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 248/248 variables, and 319 constraints, problems are : Problem set: 0 solved, 94 unsolved in 30019 ms.
Refiners :[Positive P Invariants (semi-flows): 36/36 constraints, Generalized P Invariants (flows): 24/24 constraints, State Equation: 153/153 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 94/94 constraints, Known Traps: 9/9 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 35636ms problems are : Problem set: 0 solved, 94 unsolved
Search for dead transitions found 0 dead transitions in 35641ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 36167 ms. Remains : 153/153 places, 95/95 transitions.
RANDOM walk for 400000 steps (5387 resets) in 2986 ms. (133 steps per ms) remains 1/2 properties
Running SMT prover for 1 properties.
[2026-05-23 10:42:35] [INFO ] Invariant cache hit.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-23 10:42:35] [INFO ] [Real]Absence check using 36 positive place invariants in 11 ms returned sat
[2026-05-23 10:42:35] [INFO ] [Real]Absence check using 36 positive and 24 generalized place invariants in 10 ms returned sat
[2026-05-23 10:42:35] [INFO ] After 76ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-23 10:42:35] [INFO ] State equation strengthened by 3 read => feed constraints.
[2026-05-23 10:42:35] [INFO ] After 4ms SMT Verify possible using 3 Read/Feed constraints in real domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-23 10:42:35] [INFO ] After 18ms SMT Verify possible using trap constraints in real domain returned unsat :0 sat :1
[2026-05-23 10:42:35] [INFO ] After 185ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :1
RANDOM walk for 4000000 steps (53987 resets) in 11077 ms. (361 steps per ms) remains 1/1 properties
BEST_FIRST walk for 4000003 steps (29131 resets) in 5215 ms. (766 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 5732062 steps, run timeout after 12001 ms. (steps per millisecond=477 ) properties seen :0 out of 1
Probabilistic random walk after 5732062 steps, saw 740980 distinct states, run finished after 12001 ms. (steps per millisecond=477 ) properties seen :0
[2026-05-23 10:42:51] [INFO ] Invariant cache hit.
[2026-05-23 10:42:51] [INFO ] State equation strengthened by 3 read => feed constraints.
Starting Z3 with timeout 105.0 s and query timeout 10500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 83/88 variables, 35/36 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/88 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 55/143 variables, 24/60 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/143 variables, 0/60 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 95/238 variables, 143/203 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/238 variables, 3/206 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/238 variables, 0/206 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 10/248 variables, 10/216 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/248 variables, 0/216 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 0/248 variables, 0/216 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 248/248 variables, and 216 constraints, problems are : Problem set: 0 solved, 1 unsolved in 161 ms.
Refiners :[Positive P Invariants (semi-flows): 36/36 constraints, Generalized P Invariants (flows): 24/24 constraints, State Equation: 153/153 constraints, ReadFeed: 3/3 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 105.0 s and query timeout 10500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/2 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 3/5 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/5 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 83/88 variables, 35/36 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/88 variables, 0/36 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 55/143 variables, 24/60 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/143 variables, 0/60 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 95/238 variables, 143/203 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/238 variables, 3/206 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/238 variables, 0/206 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 10/248 variables, 10/216 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/248 variables, 1/217 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/248 variables, 0/217 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 0/248 variables, 0/217 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 248/248 variables, and 217 constraints, problems are : Problem set: 0 solved, 1 unsolved in 402 ms.
Refiners :[Positive P Invariants (semi-flows): 36/36 constraints, Generalized P Invariants (flows): 24/24 constraints, State Equation: 153/153 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 575ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 140 ms.
Support contains 2 out of 153 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 153/153 places, 95/95 transitions.
Applied a total of 0 rules in 20 ms. Remains 153 /153 variables (removed 0) and now considering 95/95 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 20 ms. Remains : 153/153 places, 95/95 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 153/153 places, 95/95 transitions.
Applied a total of 0 rules in 9 ms. Remains 153 /153 variables (removed 0) and now considering 95/95 (removed 0) transitions.
[2026-05-23 10:42:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 10:42:52] [INFO ] Implicit Places using invariants in 237 ms returned []
[2026-05-23 10:42:52] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 10:42:52] [INFO ] State equation strengthened by 3 read => feed constraints.
[2026-05-23 10:42:53] [INFO ] Implicit Places using invariants and state equation in 326 ms returned []
Implicit Place search using SMT with State Equation took 566 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-23 10:42:53] [INFO ] Redundant transitions in 3 ms returned []
Running 94 sub problems to find dead transitions.
[2026-05-23 10:42:53] [INFO ] Invariant cache hit.
[2026-05-23 10:42:53] [INFO ] State equation strengthened by 3 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/152 variables, 11/11 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/152 variables, 0/11 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 2 (OVERLAPS) 1/153 variables, 36/47 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/153 variables, 13/60 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/153 variables, 0/60 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 5 (OVERLAPS) 95/248 variables, 153/213 constraints. Problems are: Problem set: 0 solved, 94 unsolved
Reachability property qltransition_49 is true.
At refinement iteration 6 (INCLUDED_ONLY) 0/248 variables, 3/216 constraints. Problems are: Problem set: 0 solved, 94 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:42:56] [INFO ] Deduced a trap composed of 6 places in 39 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:42:56] [INFO ] Deduced a trap composed of 12 places in 67 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:42:56] [INFO ] Deduced a trap composed of 9 places in 60 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:42:57] [INFO ] Deduced a trap composed of 11 places in 61 ms of which 6 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/248 variables, 4/220 constraints. Problems are: Problem set: 0 solved, 94 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:42:57] [INFO ] Deduced a trap composed of 7 places in 33 ms of which 3 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/248 variables, 1/221 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/248 variables, 0/221 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 10 (OVERLAPS) 0/248 variables, 0/221 constraints. Problems are: Problem set: 0 solved, 94 unsolved
No progress, stopping.
After SMT solving in domain Real declared 248/248 variables, and 221 constraints, problems are : Problem set: 0 solved, 94 unsolved in 8493 ms.
Refiners :[Positive P Invariants (semi-flows): 36/36 constraints, Generalized P Invariants (flows): 24/24 constraints, State Equation: 153/153 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 94/94 constraints, Known Traps: 5/5 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 94 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/152 variables, 11/11 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/152 variables, 0/11 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 2 (OVERLAPS) 1/153 variables, 36/47 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/153 variables, 13/60 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/153 variables, 5/65 constraints. Problems are: Problem set: 0 solved, 94 unsolved
SDD proceeding with computation,20 properties remain. new max is 65536
SDD size :2.62375e+09 after 3.20595e+09
At refinement iteration 5 (INCLUDED_ONLY) 0/153 variables, 0/65 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 6 (OVERLAPS) 95/248 variables, 153/218 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/248 variables, 3/221 constraints. Problems are: Problem set: 0 solved, 94 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/248 variables, 94/315 constraints. Problems are: Problem set: 0 solved, 94 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:43:07] [INFO ] Deduced a trap composed of 17 places in 50 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:43:08] [INFO ] Deduced a trap composed of 15 places in 53 ms of which 6 ms to minimize.
At refinement iteration 9 (INCLUDED_ONLY) 0/248 variables, 2/317 constraints. Problems are: Problem set: 0 solved, 94 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:43:14] [INFO ] Deduced a trap composed of 8 places in 38 ms of which 3 ms to minimize.
At refinement iteration 10 (INCLUDED_ONLY) 0/248 variables, 1/318 constraints. Problems are: Problem set: 0 solved, 94 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:43:28] [INFO ] Deduced a trap composed of 16 places in 72 ms of which 11 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 248/248 variables, and 319 constraints, problems are : Problem set: 0 solved, 94 unsolved in 30010 ms.
Refiners :[Positive P Invariants (semi-flows): 36/36 constraints, Generalized P Invariants (flows): 24/24 constraints, State Equation: 153/153 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 94/94 constraints, Known Traps: 9/9 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 38534ms problems are : Problem set: 0 solved, 94 unsolved
Search for dead transitions found 0 dead transitions in 38535ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 39122 ms. Remains : 153/153 places, 95/95 transitions.
RANDOM walk for 400000 steps (5394 resets) in 1095 ms. (364 steps per ms) remains 1/2 properties
Running SMT prover for 1 properties.
[2026-05-23 10:43:32] [INFO ] Invariant cache hit.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-23 10:43:32] [INFO ] [Real]Absence check using 36 positive place invariants in 10 ms returned sat
[2026-05-23 10:43:32] [INFO ] [Real]Absence check using 36 positive and 24 generalized place invariants in 13 ms returned sat
[2026-05-23 10:43:32] [INFO ] After 76ms SMT Verify possible using state equation in real domain returned unsat :0 sat :1
[2026-05-23 10:43:32] [INFO ] State equation strengthened by 3 read => feed constraints.
[2026-05-23 10:43:32] [INFO ] After 4ms SMT Verify possible using 3 Read/Feed constraints in real domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-23 10:43:32] [INFO ] After 17ms SMT Verify possible using trap constraints in real domain returned unsat :0 sat :1
[2026-05-23 10:43:32] [INFO ] After 163ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :1
RANDOM walk for 40000 steps (536 resets) in 171 ms. (232 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40003 steps (89 resets) in 148 ms. (268 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 1371786 steps, run timeout after 3001 ms. (steps per millisecond=457 ) properties seen :0 out of 1
Probabilistic random walk after 1371786 steps, saw 191811 distinct states, run finished after 3001 ms. (steps per millisecond=457 ) properties seen :0
[2026-05-23 10:43:35] [INFO ] Invariant cache hit.
[2026-05-23 10:43:35] [INFO ] State equation strengthened by 3 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) 48/49 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/49 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 69/118 variables, 36/37 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/118 variables, 0/37 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 25/143 variables, 23/60 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (INCLUDED_ONLY) 0/143 variables, 0/60 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 95/238 variables, 143/203 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/238 variables, 3/206 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/238 variables, 0/206 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 10/248 variables, 10/216 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/248 variables, 0/216 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 0/248 variables, 0/216 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 248/248 variables, and 216 constraints, problems are : Problem set: 0 solved, 1 unsolved in 150 ms.
Refiners :[Positive P Invariants (semi-flows): 36/36 constraints, Generalized P Invariants (flows): 24/24 constraints, State Equation: 153/153 constraints, ReadFeed: 3/3 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) 48/49 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/49 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 69/118 variables, 36/37 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/118 variables, 0/37 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 25/143 variables, 23/60 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/143 variables, 0/60 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 95/238 variables, 143/203 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/238 variables, 3/206 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/238 variables, 1/207 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:43:35] [INFO ] Deduced a trap composed of 6 places in 30 ms of which 3 ms to minimize.
At refinement iteration 10 (INCLUDED_ONLY) 0/238 variables, 1/208 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/238 variables, 0/208 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 10/248 variables, 10/218 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/248 variables, 0/218 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 0/248 variables, 0/218 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 248/248 variables, and 218 constraints, problems are : Problem set: 0 solved, 1 unsolved in 238 ms.
Refiners :[Positive P Invariants (semi-flows): 36/36 constraints, Generalized P Invariants (flows): 24/24 constraints, State Equation: 153/153 constraints, ReadFeed: 3/3 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 394ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 140 ms.
Support contains 1 out of 153 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 153/153 places, 95/95 transitions.
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 152 transition count 94
Applied a total of 1 rules in 21 ms. Remains 152 /153 variables (removed 1) and now considering 94/95 (removed 1) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 21 ms. Remains : 152/153 places, 94/95 transitions.
RANDOM walk for 40000 steps (553 resets) in 218 ms. (182 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (91 resets) in 109 ms. (363 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 1355769 steps, run timeout after 3001 ms. (steps per millisecond=451 ) properties seen :0 out of 1
Probabilistic random walk after 1355769 steps, saw 189589 distinct states, run finished after 3001 ms. (steps per millisecond=451 ) properties seen :0
// Phase 1: matrix 94 rows 152 cols
[2026-05-23 10:43:39] [INFO ] Computed 60 invariants in 7 ms
[2026-05-23 10:43:39] [INFO ] State equation strengthened by 2 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) 47/48 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/48 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (OVERLAPS) 40/88 variables, 22/23 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/88 variables, 0/23 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (OVERLAPS) 34/122 variables, 23/46 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/122 variables, 0/46 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 9/131 variables, 9/55 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/131 variables, 0/55 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 81/212 variables, 131/186 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/212 variables, 2/188 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/212 variables, 0/188 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (OVERLAPS) 12/224 variables, 8/196 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/224 variables, 3/199 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/224 variables, 0/199 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 1/225 variables, 1/200 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/225 variables, 1/201 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (INCLUDED_ONLY) 0/225 variables, 0/201 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (OVERLAPS) 12/237 variables, 3/204 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/237 variables, 1/205 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (INCLUDED_ONLY) 0/237 variables, 0/205 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (OVERLAPS) 9/246 variables, 9/214 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/246 variables, 0/214 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (OVERLAPS) 0/246 variables, 0/214 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 246/246 variables, and 214 constraints, problems are : Problem set: 0 solved, 1 unsolved in 177 ms.
Refiners :[Positive P Invariants (semi-flows): 36/36 constraints, Generalized P Invariants (flows): 24/24 constraints, State Equation: 152/152 constraints, ReadFeed: 2/2 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 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) 47/48 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/48 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 40/88 variables, 22/23 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:43:39] [INFO ] Deduced a trap composed of 10 places in 36 ms of which 2 ms to minimize.
At refinement iteration 4 (INCLUDED_ONLY) 0/88 variables, 1/24 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/88 variables, 0/24 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (OVERLAPS) 34/122 variables, 23/47 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/122 variables, 0/47 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (OVERLAPS) 9/131 variables, 9/56 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/131 variables, 0/56 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 81/212 variables, 131/187 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/212 variables, 2/189 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/212 variables, 1/190 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/212 variables, 0/190 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 12/224 variables, 8/198 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (INCLUDED_ONLY) 0/224 variables, 3/201 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 16 (INCLUDED_ONLY) 0/224 variables, 0/201 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 17 (OVERLAPS) 1/225 variables, 1/202 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 18 (INCLUDED_ONLY) 0/225 variables, 1/203 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 19 (INCLUDED_ONLY) 0/225 variables, 0/203 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 20 (OVERLAPS) 12/237 variables, 3/206 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 21 (INCLUDED_ONLY) 0/237 variables, 1/207 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 22 (INCLUDED_ONLY) 0/237 variables, 0/207 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 23 (OVERLAPS) 9/246 variables, 9/216 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 24 (INCLUDED_ONLY) 0/246 variables, 0/216 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 25 (OVERLAPS) 0/246 variables, 0/216 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 246/246 variables, and 216 constraints, problems are : Problem set: 0 solved, 1 unsolved in 293 ms.
Refiners :[Positive P Invariants (semi-flows): 36/36 constraints, Generalized P Invariants (flows): 24/24 constraints, State Equation: 152/152 constraints, ReadFeed: 2/2 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 1/1 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 483ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 52 ms.
Support contains 1 out of 152 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 152/152 places, 94/94 transitions.
Applied a total of 0 rules in 6 ms. Remains 152 /152 variables (removed 0) and now considering 94/94 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 6 ms. Remains : 152/152 places, 94/94 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 152/152 places, 94/94 transitions.
Applied a total of 0 rules in 5 ms. Remains 152 /152 variables (removed 0) and now considering 94/94 (removed 0) transitions.
[2026-05-23 10:43:39] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 10:43:39] [INFO ] Implicit Places using invariants in 196 ms returned []
[2026-05-23 10:43:39] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 10:43:39] [INFO ] State equation strengthened by 2 read => feed constraints.
[2026-05-23 10:43:40] [INFO ] Implicit Places using invariants and state equation in 274 ms returned []
Implicit Place search using SMT with State Equation took 494 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-23 10:43:40] [INFO ] Redundant transitions in 4 ms returned []
Running 91 sub problems to find dead transitions.
[2026-05-23 10:43:40] [INFO ] Invariant cache hit.
[2026-05-23 10:43:40] [INFO ] State equation strengthened by 2 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/149 variables, 36/36 constraints. Problems are: Problem set: 0 solved, 91 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/149 variables, 17/53 constraints. Problems are: Problem set: 0 solved, 91 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/149 variables, 0/53 constraints. Problems are: Problem set: 0 solved, 91 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (OVERLAPS) 2/151 variables, 7/60 constraints. Problems are: Problem set: 0 solved, 91 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/151 variables, 0/60 constraints. Problems are: Problem set: 0 solved, 91 unsolved
At refinement iteration 5 (OVERLAPS) 94/245 variables, 151/211 constraints. Problems are: Problem set: 0 solved, 91 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/245 variables, 2/213 constraints. Problems are: Problem set: 0 solved, 91 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:43:42] [INFO ] Deduced a trap composed of 12 places in 103 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:43:42] [INFO ] Deduced a trap composed of 10 places in 116 ms of which 6 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/245 variables, 2/215 constraints. Problems are: Problem set: 0 solved, 91 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/245 variables, 0/215 constraints. Problems are: Problem set: 0 solved, 91 unsolved
At refinement iteration 9 (OVERLAPS) 1/246 variables, 1/216 constraints. Problems are: Problem set: 0 solved, 91 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:43:44] [INFO ] Deduced a trap composed of 6 places in 87 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:43:44] [INFO ] Deduced a trap composed of 8 places in 86 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:43:44] [INFO ] Deduced a trap composed of 8 places in 80 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:43:45] [INFO ] Deduced a trap composed of 7 places in 84 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:43:45] [INFO ] Deduced a trap composed of 15 places in 100 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:43:45] [INFO ] Deduced a trap composed of 16 places in 99 ms of which 13 ms to minimize.
At refinement iteration 10 (INCLUDED_ONLY) 0/246 variables, 6/222 constraints. Problems are: Problem set: 0 solved, 91 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:43:46] [INFO ] Deduced a trap composed of 7 places in 69 ms of which 5 ms to minimize.
At refinement iteration 11 (INCLUDED_ONLY) 0/246 variables, 1/223 constraints. Problems are: Problem set: 0 solved, 91 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/246 variables, 0/223 constraints. Problems are: Problem set: 0 solved, 91 unsolved
At refinement iteration 13 (OVERLAPS) 0/246 variables, 0/223 constraints. Problems are: Problem set: 0 solved, 91 unsolved
No progress, stopping.
After SMT solving in domain Real declared 246/246 variables, and 223 constraints, problems are : Problem set: 0 solved, 91 unsolved in 8386 ms.
Refiners :[Positive P Invariants (semi-flows): 36/36 constraints, Generalized P Invariants (flows): 24/24 constraints, State Equation: 152/152 constraints, ReadFeed: 2/2 constraints, PredecessorRefiner: 91/91 constraints, Known Traps: 9/9 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 91 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/149 variables, 36/36 constraints. Problems are: Problem set: 0 solved, 91 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/149 variables, 17/53 constraints. Problems are: Problem set: 0 solved, 91 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/149 variables, 9/62 constraints. Problems are: Problem set: 0 solved, 91 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/149 variables, 0/62 constraints. Problems are: Problem set: 0 solved, 91 unsolved
At refinement iteration 4 (OVERLAPS) 2/151 variables, 7/69 constraints. Problems are: Problem set: 0 solved, 91 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:43:49] [INFO ] Deduced a trap composed of 11 places in 66 ms of which 5 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/151 variables, 1/70 constraints. Problems are: Problem set: 0 solved, 91 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:43:50] [INFO ] Deduced a trap composed of 8 places in 59 ms of which 4 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/151 variables, 1/71 constraints. Problems are: Problem set: 0 solved, 91 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/151 variables, 0/71 constraints. Problems are: Problem set: 0 solved, 91 unsolved
At refinement iteration 8 (OVERLAPS) 94/245 variables, 151/222 constraints. Problems are: Problem set: 0 solved, 91 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/245 variables, 2/224 constraints. Problems are: Problem set: 0 solved, 91 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/245 variables, 91/315 constraints. Problems are: Problem set: 0 solved, 91 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:43:52] [INFO ] Deduced a trap composed of 6 places in 36 ms of which 3 ms to minimize.
At refinement iteration 11 (INCLUDED_ONLY) 0/245 variables, 1/316 constraints. Problems are: Problem set: 0 solved, 91 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:44:01] [INFO ] Deduced a trap composed of 14 places in 54 ms of which 5 ms to minimize.
Reachability property qltransition_50 is true.
At refinement iteration 12 (INCLUDED_ONLY) 0/245 variables, 1/317 constraints. Problems are: Problem set: 0 solved, 91 unsolved
SDD proceeding with computation,19 properties remain. new max is 65536
SDD size :3.20595e+09 after 3.76788e+09
At refinement iteration 13 (INCLUDED_ONLY) 0/245 variables, 0/317 constraints. Problems are: Problem set: 0 solved, 91 unsolved
At refinement iteration 14 (OVERLAPS) 1/246 variables, 1/318 constraints. Problems are: Problem set: 0 solved, 91 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 246/246 variables, and 318 constraints, problems are : Problem set: 0 solved, 91 unsolved in 30016 ms.
Refiners :[Positive P Invariants (semi-flows): 36/36 constraints, Generalized P Invariants (flows): 24/24 constraints, State Equation: 152/152 constraints, ReadFeed: 2/2 constraints, PredecessorRefiner: 91/91 constraints, Known Traps: 13/13 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 38451ms problems are : Problem set: 0 solved, 91 unsolved
Search for dead transitions found 0 dead transitions in 38453ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 38964 ms. Remains : 152/152 places, 94/94 transitions.
Attempting over-approximation, by ignoring read arcs.
Partial Free-agglomeration rule applied 1 times.
Drop transitions (Partial Free agglomeration) removed 1 transitions
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 152 transition count 94
Applied a total of 1 rules in 11 ms. Remains 152 /152 variables (removed 0) and now considering 94/94 (removed 0) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 94 rows 152 cols
[2026-05-23 10:44:18] [INFO ] Computed 60 invariants in 3 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-23 10:44:18] [INFO ] [Real]Absence check using 36 positive place invariants in 11 ms returned sat
[2026-05-23 10:44:18] [INFO ] [Real]Absence check using 36 positive and 24 generalized place invariants in 14 ms returned sat
[2026-05-23 10:44:18] [INFO ] After 159ms 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
[2026-05-23 10:44:18] [INFO ] [Nat]Absence check using 36 positive place invariants in 10 ms returned sat
[2026-05-23 10:44:18] [INFO ] [Nat]Absence check using 36 positive and 24 generalized place invariants in 13 ms returned sat
[2026-05-23 10:44:18] [INFO ] After 77ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:44:18] [INFO ] Deduced a trap composed of 5 places in 71 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 10:44:18] [INFO ] Deduced a trap composed of 9 places in 58 ms of which 4 ms to minimize.
[2026-05-23 10:44:19] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 156 ms
TRAPS : Iteration 1
[2026-05-23 10:44:19] [INFO ] After 263ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-23 10:44:19] [INFO ] After 350ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
Over-approximation ignoring read arcs solved 0 properties in 533 ms.
RANDOM walk for 4 steps (0 resets) in 4 ms. (0 steps per ms) remains 0/1 properties
Attempting over-approximation, by ignoring read arcs.
Partial Free-agglomeration rule applied 1 times.
Drop transitions (Partial Free agglomeration) removed 1 transitions
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 153 transition count 95
Applied a total of 1 rules in 12 ms. Remains 153 /153 variables (removed 0) and now considering 95/95 (removed 0) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 95 rows 153 cols
[2026-05-23 10:44:19] [INFO ] Computed 60 invariants in 2 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-23 10:44:19] [INFO ] [Real]Absence check using 36 positive place invariants in 8 ms returned sat
[2026-05-23 10:44:19] [INFO ] [Real]Absence check using 36 positive and 24 generalized place invariants in 13 ms returned sat
[2026-05-23 10:44:19] [INFO ] After 72ms 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
[2026-05-23 10:44:19] [INFO ] [Nat]Absence check using 36 positive place invariants in 12 ms returned sat
[2026-05-23 10:44:19] [INFO ] [Nat]Absence check using 36 positive and 24 generalized place invariants in 13 ms returned sat
[2026-05-23 10:44:19] [INFO ] After 103ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-23 10:44:19] [INFO ] After 136ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-23 10:44:19] [INFO ] After 239ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-23 10:44:19] [INFO ] Flatten gal took : 39 ms
[2026-05-23 10:44:19] [INFO ] Flatten gal took : 16 ms
[2026-05-23 10:44:19] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality4696681166988404539.gal : 5 ms
[2026-05-23 10:44:19] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality1125731445251221802.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/ReachabilityCardinality4696681166988404539.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality1125731445251221802.prop' '--nowitness' '--gen-order' 'FOLLOW'

its-reach command run as :

/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...328
Loading property file /tmp/ReachabilityCardinality1125731445251221802.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 3
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :3 after 5
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :5 after 17
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :17 after 36
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :36 after 129
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :129 after 1397
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :1397 after 1941
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :13397 after 20081
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :20081 after 396225
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :396225 after 4.30089e+06
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :4.30089e+06 after 8.42717e+06
SDD proceeding with computation,1 properties remain. new max is 8192
SDD size :8.42717e+06 after 1.70206e+07
SDD proceeding with computation,1 properties remain. new max is 16384
SDD size :3.97819e+07 after 1.13108e+08
Detected timeout of ITS tools.
[2026-05-23 10:44:34] [INFO ] Flatten gal took : 15 ms
[2026-05-23 10:44:34] [INFO ] Applying decomposition
[2026-05-23 10:44:34] [INFO ] Flatten gal took : 15 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/graph10101892648427408101.txt' '-o' '/tmp/graph10101892648427408101.bin' '-w' '/tmp/graph10101892648427408101.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph10101892648427408101.bin' '-l' '-1' '-v' '-w' '/tmp/graph10101892648427408101.weights' '-q' '0' '-e' '0.001'
[2026-05-23 10:44:34] [INFO ] Decomposing Gal with order
[2026-05-23 10:44:34] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-23 10:44:34] [INFO ] Removed a total of 23 redundant transitions.
[2026-05-23 10:44:34] [INFO ] Flatten gal took : 81 ms
[2026-05-23 10:44:34] [INFO ] Fuse similar labels procedure discarded/fused a total of 2 labels/synchronizations in 14 ms.
[2026-05-23 10:44:34] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality8610247061961164144.gal : 11 ms
[2026-05-23 10:44:34] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality9855139301535670708.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality8610247061961164144.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality9855139301535670708.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 ...307
Loading property file /tmp/ReachabilityCardinality9855139301535670708.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 3
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :3 after 5
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :5 after 457
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :457 after 10749
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :10749 after 9.41189e+07
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :9.41189e+07 after 3.74627e+09
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :1.02559e+11 after 2.02747e+11
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst\_mod\_flat,8.75105e+11,1.18863,32692,3108,660,62935,3067,265,109231,142,12608,0
Total reachable state count : 875104699031

Verifying 1 reachability properties.
Reachability property qltransition_31 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_31,9390,1.19317,32948,113,104,62935,3067,274,109231,146,12608,0
Over-approximation ignoring read arcs solved 0 properties in 17042 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
[2026-05-23 10:44:36] [INFO ] Flatten gal took : 14 ms
[2026-05-23 10:44:36] [INFO ] Applying decomposition
[2026-05-23 10:44:36] [INFO ] Flatten gal took : 12 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/graph1246182021847157722.txt' '-o' '/tmp/graph1246182021847157722.bin' '-w' '/tmp/graph1246182021847157722.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph1246182021847157722.bin' '-l' '-1' '-v' '-w' '/tmp/graph1246182021847157722.weights' '-q' '0' '-e' '0.001'
[2026-05-23 10:44:36] [INFO ] Decomposing Gal with order
[2026-05-23 10:44:36] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-23 10:44:36] [INFO ] Removed a total of 21 redundant transitions.
[2026-05-23 10:44:36] [INFO ] Flatten gal took : 29 ms
[2026-05-23 10:44:36] [INFO ] Fuse similar labels procedure discarded/fused a total of 10 labels/synchronizations in 6 ms.
[2026-05-23 10:44:36] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality10873518484801779252.gal : 6 ms
[2026-05-23 10:44:36] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality16870997160460824889.prop : 0 ms
Invoking ITS tools like this :cd /home/mcc/execution;'/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64' '--gc-threshold' '2000000' '--quiet' '-i' '/tmp/ReachabilityCardinality10873518484801779252.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality16870997160460824889.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 ...309
Loading property file /tmp/ReachabilityCardinality16870997160460824889.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 3
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :3 after 5
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :5 after 461
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :461 after 14535
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :14535 after 1.59409e+09
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :1.59409e+09 after 6.50739e+09
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :3.59692e+11 after 5.69833e+11
Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
petri\_inst\_inst\_mod\_flat,1.60031e+12,1.28136,35224,3784,427,84166,1945,344,62433,145,6612,0
Total reachable state count : 1600305869653

Verifying 1 reachability properties.
Reachability property qltransition_31 is true.

Model ,|S| ,Time ,Mem(kb) ,fin. SDD ,fin. DDD ,peak SDD ,peak DDD ,SDD Hom ,SDD cache peak ,DDD Hom ,DDD cachepeak ,SHom cache
qltransition\_31,3240,1.28903,35480,65,79,84166,1945,353,62433,149,6612,0
Able to resolve query QuasiLiveness after proving 89 properties.
FORMULA QuasiLiveness TRUE TECHNIQUES RANDOM_WALK PARIKH_WALK DECISION_DIAGRAMS COLLATERAL_PROCESSING BESTFIRST_WALK TOPOLOGICAL INITIAL_STATE USE_NUPN
Total runtime 380233 ms.

BK_STOP 1779533077872

--------------------
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="DES-PT-10a"
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 DES-PT-10a, 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 r096-smll-177946996500227"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/DES-PT-10a.tgz
mv DES-PT-10a 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 ;