About the Execution of 2025-gold for DoubleLock-PT-p2s1
| Execution Summary | |||||
| Max Memory Used (MB) |
Time wait (ms) | CPU Usage (ms) | I/O Wait (ms) | Computed Result | Execution Status |
| 13442.523 | 3600000.00 | 3899218.00 | 22465.60 | 10 1 0 1 inf 1 1 1 ? 1 1 1 ? ? 1 10 | normal |
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.r127-smll-177955743800004.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 DoubleLock-PT-p2s1, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r127-smll-177955743800004
=====================================================================
--------------------
preparation of the directory to be used:
/home/mcc/execution
total 540K
-rw-r--r-- 1 mcc users 6.7K Mar 6 18:11 CTLCardinality.txt
-rw-r--r-- 1 mcc users 73K Mar 6 18:11 CTLCardinality.xml
-rw-r--r-- 1 mcc users 4.7K Mar 6 18:10 CTLFireability.txt
-rw-r--r-- 1 mcc users 40K Mar 6 18:10 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.9K Mar 15 09:39 LTLCardinality.txt
-rw-r--r-- 1 mcc users 30K Mar 15 09:39 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.2K Mar 15 09:39 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K Mar 15 09:39 LTLFireability.xml
-rw-r--r-- 1 mcc users 9.4K Mar 6 18:11 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 97K Mar 6 18:11 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 12K Mar 6 18:11 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 104K Mar 6 18:11 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.6K Mar 15 09:39 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.7K Mar 15 09:39 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 5 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 97K 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 positive values
NUM_VECTOR
echo here is the order used to build the result vector(from xml file)
FORMULA_NAME DoubleLock-PT-p2s1-UpperBounds-00
FORMULA_NAME DoubleLock-PT-p2s1-UpperBounds-01
FORMULA_NAME DoubleLock-PT-p2s1-UpperBounds-02
FORMULA_NAME DoubleLock-PT-p2s1-UpperBounds-03
FORMULA_NAME DoubleLock-PT-p2s1-UpperBounds-04
FORMULA_NAME DoubleLock-PT-p2s1-UpperBounds-05
FORMULA_NAME DoubleLock-PT-p2s1-UpperBounds-06
FORMULA_NAME DoubleLock-PT-p2s1-UpperBounds-07
FORMULA_NAME DoubleLock-PT-p2s1-UpperBounds-08
FORMULA_NAME DoubleLock-PT-p2s1-UpperBounds-09
FORMULA_NAME DoubleLock-PT-p2s1-UpperBounds-10
FORMULA_NAME DoubleLock-PT-p2s1-UpperBounds-11
FORMULA_NAME DoubleLock-PT-p2s1-UpperBounds-12
FORMULA_NAME DoubleLock-PT-p2s1-UpperBounds-13
FORMULA_NAME DoubleLock-PT-p2s1-UpperBounds-14
FORMULA_NAME DoubleLock-PT-p2s1-UpperBounds-15
=== Now, execution of the tool begins
BK_START 1779560619895
Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=DoubleLock-PT-p2s1
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
UpperBounds PT
Running Version 202505121319
[2026-05-23 18:23:41] [INFO ] Running its-tools with arguments : [-pnfolder, /home/mcc/execution, -examination, UpperBounds, -its, -ltsmin, -greatspnpath, /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/, -order, META, -manyOrder, -smt, -timeout, 3600]
[2026-05-23 18:23:41] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-23 18:23:42] [INFO ] Load time of PNML (sax parser for PT used): 128 ms
[2026-05-23 18:23:42] [INFO ] Transformed 64 places.
[2026-05-23 18:23:42] [INFO ] Transformed 212 transitions.
[2026-05-23 18:23:42] [INFO ] Parsed PT model containing 64 places and 212 transitions and 860 arcs in 292 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 11 ms.
Deduced a syphon composed of 8 places in 2 ms
Reduce places removed 8 places and 8 transitions.
FORMULA DoubleLock-PT-p2s1-UpperBounds-02 0 TECHNIQUES TOPOLOGICAL INITIAL_STATE
Current structural bounds on expressions (Initially) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2026-05-23 18:23:42] [INFO ] Flow matrix only has 152 transitions (discarded 52 similar events)
// Phase 1: matrix 152 rows 56 cols
[2026-05-23 18:23:42] [INFO ] Computed 4 invariants in 21 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10] Max Struct:[10, 1, 1, +inf, 1, 1, 1, +inf, 1, 1, 1, +inf, +inf, 1, 10]
FORMULA DoubleLock-PT-p2s1-UpperBounds-15 10 TECHNIQUES TOPOLOGICAL INITIAL_STATE
RANDOM walk for 10000 steps (50 resets) in 72 ms. (136 steps per ms)
FORMULA DoubleLock-PT-p2s1-UpperBounds-14 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA DoubleLock-PT-p2s1-UpperBounds-11 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA DoubleLock-PT-p2s1-UpperBounds-10 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA DoubleLock-PT-p2s1-UpperBounds-09 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA DoubleLock-PT-p2s1-UpperBounds-07 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA DoubleLock-PT-p2s1-UpperBounds-06 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA DoubleLock-PT-p2s1-UpperBounds-05 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA DoubleLock-PT-p2s1-UpperBounds-03 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA DoubleLock-PT-p2s1-UpperBounds-01 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 50004 steps (34 resets) in 95 ms. (520 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[8, 19, 6, 7, 13] Max Struct:[10, +inf, +inf, +inf, +inf]
[2026-05-23 18:23:42] [INFO ] Flow matrix only has 152 transitions (discarded 52 similar events)
[2026-05-23 18:23:42] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 18:23:42] [INFO ] [Real]Absence check using 3 positive place invariants in 8 ms returned sat
[2026-05-23 18:23:42] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:23:42] [INFO ] [Real]Absence check using state equation in 129 ms returned sat
[2026-05-23 18:23:42] [INFO ] State equation strengthened by 27 read => feed constraints.
[2026-05-23 18:23:42] [INFO ] [Real]Added 27 Read/Feed constraints in 23 ms returned sat
[2026-05-23 18:23:42] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 18:23:43] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-23 18:23:43] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:23:43] [INFO ] [Nat]Absence check using state equation in 90 ms returned sat
[2026-05-23 18:23:43] [INFO ] [Nat]Added 27 Read/Feed constraints in 15 ms returned sat
[2026-05-23 18:23:43] [INFO ] Computed and/alt/rep : 67/466/67 causal constraints (skipped 83 transitions) in 64 ms.
[2026-05-23 18:23:43] [INFO ] Added : 5 causal constraints over 2 iterations in 132 ms. Result :sat
Minimization took 56 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 18:23:43] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-23 18:23:43] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 2 ms returned sat
[2026-05-23 18:23:43] [INFO ] [Real]Absence check using state equation in 83 ms returned sat
[2026-05-23 18:23:43] [INFO ] [Real]Added 27 Read/Feed constraints in 15 ms returned sat
[2026-05-23 18:23:43] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 18:23:43] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-23 18:23:43] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:23:43] [INFO ] [Nat]Absence check using state equation in 69 ms returned sat
[2026-05-23 18:23:43] [INFO ] [Nat]Added 27 Read/Feed constraints in 15 ms returned sat
[2026-05-23 18:23:43] [INFO ] Computed and/alt/rep : 67/466/67 causal constraints (skipped 83 transitions) in 25 ms.
[2026-05-23 18:23:43] [INFO ] Added : 9 causal constraints over 2 iterations in 91 ms. Result :sat
Minimization took 43 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 18:23:43] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-23 18:23:43] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:23:43] [INFO ] [Real]Absence check using state equation in 60 ms returned sat
[2026-05-23 18:23:43] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 18:23:43] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-23 18:23:43] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:23:44] [INFO ] [Nat]Absence check using state equation in 71 ms returned sat
[2026-05-23 18:23:44] [INFO ] [Nat]Added 27 Read/Feed constraints in 16 ms returned sat
[2026-05-23 18:23:44] [INFO ] Computed and/alt/rep : 67/466/67 causal constraints (skipped 83 transitions) in 33 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 18:23:44] [INFO ] Deduced a trap composed of 16 places in 91 ms of which 8 ms to minimize.
[2026-05-23 18:23:44] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 125 ms
[2026-05-23 18:23:44] [INFO ] Added : 7 causal constraints over 2 iterations in 226 ms. Result :sat
Minimization took 40 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 18:23:44] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-23 18:23:44] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:23:44] [INFO ] [Real]Absence check using state equation in 67 ms returned sat
[2026-05-23 18:23:44] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 18:23:44] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-23 18:23:44] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:23:44] [INFO ] [Nat]Absence check using state equation in 70 ms returned sat
[2026-05-23 18:23:44] [INFO ] [Nat]Added 27 Read/Feed constraints in 12 ms returned sat
[2026-05-23 18:23:44] [INFO ] Computed and/alt/rep : 67/466/67 causal constraints (skipped 83 transitions) in 25 ms.
[2026-05-23 18:23:44] [INFO ] Added : 23 causal constraints over 5 iterations in 143 ms. Result :sat
Minimization took 51 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 18:23:44] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-23 18:23:44] [INFO ] [Real]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:23:44] [INFO ] [Real]Absence check using state equation in 56 ms returned sat
[2026-05-23 18:23:44] [INFO ] [Real]Added 27 Read/Feed constraints in 10 ms returned sat
[2026-05-23 18:23:44] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 18:23:44] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-23 18:23:44] [INFO ] [Nat]Absence check using 3 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:23:45] [INFO ] [Nat]Absence check using state equation in 57 ms returned sat
[2026-05-23 18:23:45] [INFO ] [Nat]Added 27 Read/Feed constraints in 10 ms returned sat
[2026-05-23 18:23:45] [INFO ] Computed and/alt/rep : 67/466/67 causal constraints (skipped 83 transitions) in 25 ms.
[2026-05-23 18:23:45] [INFO ] Added : 45 causal constraints over 9 iterations in 204 ms. Result :sat
Minimization took 161 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[8, 19, 6, 7, 13] Max Struct:[10, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[8, 19, 6, 7, 13] Max Struct:[10, +inf, +inf, +inf, +inf]
Support contains 5 out of 56 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 56/56 places, 204/204 transitions.
Graph (complete) has 357 edges and 56 vertex of which 52 are kept as prefixes of interest. Removing 4 places using SCC suffix rule.2 ms
Discarding 4 places :
Also discarding 0 output 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 3 place count 52 transition count 202
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 4 place count 51 transition count 198
Iterating global reduction 1 with 1 rules applied. Total rules applied 5 place count 51 transition count 198
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 6 place count 50 transition count 194
Iterating global reduction 1 with 1 rules applied. Total rules applied 7 place count 50 transition count 194
Applied a total of 7 rules in 48 ms. Remains 50 /56 variables (removed 6) and now considering 194/204 (removed 10) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 60 ms. Remains : 50/56 places, 194/204 transitions.
[2026-05-23 18:23:45] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {12=1, 25=1, 87=1, 88=1, 133=2}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {12=1, 25=1, 93=1, 94=1, 141=2}
Produces a positive solution
Incomplete random walk after 10000 steps, including 33 resets, run finished after 70 ms. (steps per millisecond=142 ) properties (out of 5) seen :[5, 10, 5, 5, 5]
Current structural bounds on expressions (after cover walk) : Max Seen:[8, 19, 6, 7, 13] Max Struct:[10, +inf, +inf, +inf, +inf]
[2026-05-23 18:23:46] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
// Phase 1: matrix 145 rows 50 cols
[2026-05-23 18:23:46] [INFO ] Computed 2 invariants in 3 ms
Current structural bounds on expressions (after invariants) : Max Seen:[8, 19, 6, 7, 13] Max Struct:[10, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2785 resets) in 1976 ms. (505 steps per ms)
FORMULA DoubleLock-PT-p2s1-UpperBounds-00 10 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 4000003 steps (454 resets) in 2625 ms. (1523 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[19, 13, 53, 16] Max Struct:[+inf, +inf, +inf, +inf]
[2026-05-23 18:23:50] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
[2026-05-23 18:23:50] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:23:50] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-23 18:23:50] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 2 ms returned sat
[2026-05-23 18:23:50] [INFO ] [Real]Absence check using state equation in 84 ms returned sat
[2026-05-23 18:23:50] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:23:50] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-23 18:23:50] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 2 ms returned sat
[2026-05-23 18:23:51] [INFO ] [Nat]Absence check using state equation in 53 ms returned sat
[2026-05-23 18:23:51] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:23:51] [INFO ] [Nat]Added 26 Read/Feed constraints in 11 ms returned sat
[2026-05-23 18:23:51] [INFO ] Computed and/alt/rep : 62/426/62 causal constraints (skipped 81 transitions) in 23 ms.
[2026-05-23 18:23:51] [INFO ] Added : 11 causal constraints over 3 iterations in 82 ms. Result :sat
Minimization took 71 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:23:51] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-23 18:23:51] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:23:51] [INFO ] [Real]Absence check using state equation in 47 ms returned sat
[2026-05-23 18:23:51] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:23:51] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-23 18:23:51] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:23:51] [INFO ] [Nat]Absence check using state equation in 60 ms returned sat
[2026-05-23 18:23:51] [INFO ] [Nat]Added 26 Read/Feed constraints in 13 ms returned sat
[2026-05-23 18:23:51] [INFO ] Computed and/alt/rep : 62/426/62 causal constraints (skipped 81 transitions) in 22 ms.
[2026-05-23 18:23:51] [INFO ] Added : 42 causal constraints over 9 iterations in 184 ms. Result :sat
Minimization took 67 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:23:51] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-23 18:23:51] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:23:51] [INFO ] [Real]Absence check using state equation in 48 ms returned sat
[2026-05-23 18:23:51] [INFO ] [Real]Added 26 Read/Feed constraints in 12 ms returned sat
[2026-05-23 18:23:51] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:23:51] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-23 18:23:51] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:23:51] [INFO ] [Nat]Absence check using state equation in 49 ms returned sat
[2026-05-23 18:23:51] [INFO ] [Nat]Added 26 Read/Feed constraints in 10 ms returned sat
[2026-05-23 18:23:51] [INFO ] Computed and/alt/rep : 62/426/62 causal constraints (skipped 81 transitions) in 21 ms.
[2026-05-23 18:23:52] [INFO ] Added : 33 causal constraints over 8 iterations in 166 ms. Result :sat
Minimization took 61 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:23:52] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-23 18:23:52] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:23:52] [INFO ] [Real]Absence check using state equation in 48 ms returned sat
[2026-05-23 18:23:52] [INFO ] [Real]Added 26 Read/Feed constraints in 10 ms returned sat
[2026-05-23 18:23:52] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:23:52] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-23 18:23:52] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 10 ms returned sat
[2026-05-23 18:23:52] [INFO ] [Nat]Absence check using state equation in 53 ms returned sat
[2026-05-23 18:23:52] [INFO ] [Nat]Added 26 Read/Feed constraints in 15 ms returned sat
[2026-05-23 18:23:52] [INFO ] Computed and/alt/rep : 62/426/62 causal constraints (skipped 81 transitions) in 22 ms.
[2026-05-23 18:23:52] [INFO ] Added : 39 causal constraints over 8 iterations in 177 ms. Result :sat
Minimization took 79 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[19, 13, 53, 16] Max Struct:[+inf, +inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[19, 13, 53, 16] Max Struct:[+inf, +inf, +inf, +inf]
Support contains 4 out of 50 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 194/194 transitions.
Applied a total of 0 rules in 11 ms. Remains 50 /50 variables (removed 0) and now considering 194/194 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 11 ms. Remains : 50/50 places, 194/194 transitions.
[2026-05-23 18:23:52] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {12=1, 25=1, 87=1, 88=1, 133=2}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {12=1, 25=1, 93=1, 94=1, 141=2}
Produces a positive solution
Incomplete random walk after 10000 steps, including 35 resets, run finished after 138 ms. (steps per millisecond=72 ) properties (out of 4) seen :[2147483647, 6, 6, 6]
Current structural bounds on expressions (after cover walk) : Max Seen:[+inf, 13, 53, 16] Max Struct:[+inf, +inf, +inf, +inf]
[2026-05-23 18:23:52] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
[2026-05-23 18:23:52] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[+inf, 13, 53, 16] Max Struct:[+inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (2820 resets) in 1807 ms. (553 steps per ms)
FORMULA DoubleLock-PT-p2s1-UpperBounds-04 +inf TECHNIQUES TOPOLOGICAL RANDOM_WALK
BEST_FIRST walk for 3000003 steps (431 resets) in 1833 ms. (1635 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[13, 55, 17] Max Struct:[+inf, +inf, +inf]
[2026-05-23 18:23:56] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
[2026-05-23 18:23:56] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:23:56] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-23 18:23:56] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 2 ms returned sat
[2026-05-23 18:23:56] [INFO ] [Real]Absence check using state equation in 81 ms returned sat
[2026-05-23 18:23:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:23:56] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-23 18:23:56] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:23:56] [INFO ] [Nat]Absence check using state equation in 50 ms returned sat
[2026-05-23 18:23:56] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:23:56] [INFO ] [Nat]Added 26 Read/Feed constraints in 12 ms returned sat
[2026-05-23 18:23:56] [INFO ] Computed and/alt/rep : 62/426/62 causal constraints (skipped 81 transitions) in 36 ms.
[2026-05-23 18:23:57] [INFO ] Added : 42 causal constraints over 9 iterations in 210 ms. Result :sat
Minimization took 70 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:23:57] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-23 18:23:57] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:23:57] [INFO ] [Real]Absence check using state equation in 50 ms returned sat
[2026-05-23 18:23:57] [INFO ] [Real]Added 26 Read/Feed constraints in 10 ms returned sat
[2026-05-23 18:23:57] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:23:57] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-23 18:23:57] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:23:57] [INFO ] [Nat]Absence check using state equation in 54 ms returned sat
[2026-05-23 18:23:57] [INFO ] [Nat]Added 26 Read/Feed constraints in 11 ms returned sat
[2026-05-23 18:23:57] [INFO ] Computed and/alt/rep : 62/426/62 causal constraints (skipped 81 transitions) in 17 ms.
[2026-05-23 18:23:57] [INFO ] Added : 33 causal constraints over 8 iterations in 162 ms. Result :sat
Minimization took 62 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:23:57] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-23 18:23:57] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:23:57] [INFO ] [Real]Absence check using state equation in 47 ms returned sat
[2026-05-23 18:23:57] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:23:57] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-23 18:23:57] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:23:57] [INFO ] [Nat]Absence check using state equation in 51 ms returned sat
[2026-05-23 18:23:57] [INFO ] [Nat]Added 26 Read/Feed constraints in 10 ms returned sat
[2026-05-23 18:23:57] [INFO ] Computed and/alt/rep : 62/426/62 causal constraints (skipped 81 transitions) in 17 ms.
[2026-05-23 18:23:57] [INFO ] Added : 21 causal constraints over 6 iterations in 122 ms. Result :sat
Minimization took 59 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[13, 55, 17] Max Struct:[+inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[13, 55, 17] Max Struct:[+inf, +inf, +inf]
Support contains 3 out of 50 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 194/194 transitions.
Applied a total of 0 rules in 10 ms. Remains 50 /50 variables (removed 0) and now considering 194/194 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 10 ms. Remains : 50/50 places, 194/194 transitions.
[2026-05-23 18:23:58] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {12=1, 25=1, 87=1, 88=1, 133=2}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {12=1, 25=1, 93=1, 94=1, 141=2}
Produces a positive solution
Incomplete random walk after 10000 steps, including 31 resets, run finished after 36 ms. (steps per millisecond=277 ) properties (out of 3) seen :[8, 6, 6]
Current structural bounds on expressions (after cover walk) : Max Seen:[13, 55, 17] Max Struct:[+inf, +inf, +inf]
[2026-05-23 18:23:58] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
[2026-05-23 18:23:58] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[13, 55, 17] Max Struct:[+inf, +inf, +inf]
RANDOM walk for 1000000 steps (2853 resets) in 1790 ms. (558 steps per ms)
BEST_FIRST walk for 3000003 steps (461 resets) in 1854 ms. (1617 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[13, 55, 17] Max Struct:[+inf, +inf, +inf]
[2026-05-23 18:24:01] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
[2026-05-23 18:24:01] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:24:01] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-23 18:24:01] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:24:02] [INFO ] [Real]Absence check using state equation in 49 ms returned sat
[2026-05-23 18:24:02] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:24:02] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-23 18:24:02] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:24:02] [INFO ] [Nat]Absence check using state equation in 43 ms returned sat
[2026-05-23 18:24:02] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:24:02] [INFO ] [Nat]Added 26 Read/Feed constraints in 11 ms returned sat
[2026-05-23 18:24:02] [INFO ] Computed and/alt/rep : 62/426/62 causal constraints (skipped 81 transitions) in 22 ms.
[2026-05-23 18:24:02] [INFO ] Added : 42 causal constraints over 9 iterations in 209 ms. Result :sat
Minimization took 70 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:24:02] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-23 18:24:02] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:24:02] [INFO ] [Real]Absence check using state equation in 50 ms returned sat
[2026-05-23 18:24:02] [INFO ] [Real]Added 26 Read/Feed constraints in 13 ms returned sat
[2026-05-23 18:24:02] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:24:02] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-23 18:24:02] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:24:02] [INFO ] [Nat]Absence check using state equation in 51 ms returned sat
[2026-05-23 18:24:02] [INFO ] [Nat]Added 26 Read/Feed constraints in 14 ms returned sat
[2026-05-23 18:24:02] [INFO ] Computed and/alt/rep : 62/426/62 causal constraints (skipped 81 transitions) in 18 ms.
[2026-05-23 18:24:02] [INFO ] Added : 33 causal constraints over 8 iterations in 193 ms. Result :sat
Minimization took 68 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:24:02] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-23 18:24:02] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:24:02] [INFO ] [Real]Absence check using state equation in 50 ms returned sat
[2026-05-23 18:24:02] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:24:03] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-23 18:24:03] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:24:03] [INFO ] [Nat]Absence check using state equation in 45 ms returned sat
[2026-05-23 18:24:03] [INFO ] [Nat]Added 26 Read/Feed constraints in 14 ms returned sat
[2026-05-23 18:24:03] [INFO ] Computed and/alt/rep : 62/426/62 causal constraints (skipped 81 transitions) in 15 ms.
[2026-05-23 18:24:03] [INFO ] Added : 21 causal constraints over 6 iterations in 112 ms. Result :sat
Minimization took 58 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[13, 55, 17] Max Struct:[+inf, +inf, +inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[13, 55, 17] Max Struct:[+inf, +inf, +inf]
Support contains 3 out of 50 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 194/194 transitions.
Applied a total of 0 rules in 13 ms. Remains 50 /50 variables (removed 0) and now considering 194/194 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 14 ms. Remains : 50/50 places, 194/194 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 194/194 transitions.
Applied a total of 0 rules in 9 ms. Remains 50 /50 variables (removed 0) and now considering 194/194 (removed 0) transitions.
[2026-05-23 18:24:03] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
[2026-05-23 18:24:03] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:24:03] [INFO ] Implicit Places using invariants in 119 ms returned []
[2026-05-23 18:24:03] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
[2026-05-23 18:24:03] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:24:03] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:24:03] [INFO ] Implicit Places using invariants and state equation in 255 ms returned []
Implicit Place search using SMT with State Equation took 385 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-23 18:24:03] [INFO ] Redundant transitions in 9 ms returned []
Running 192 sub problems to find dead transitions.
[2026-05-23 18:24:03] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
[2026-05-23 18:24:03] [INFO ] Invariant cache hit.
[2026-05-23 18:24:03] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/50 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/50 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/50 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 3 (OVERLAPS) 145/195 variables, 50/52 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/195 variables, 26/78 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/195 variables, 0/78 constraints. Problems are: Problem set: 0 solved, 192 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/195 variables, 0/78 constraints. Problems are: Problem set: 0 solved, 192 unsolved
No progress, stopping.
After SMT solving in domain Real declared 195/195 variables, and 78 constraints, problems are : Problem set: 0 solved, 192 unsolved in 5135 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 192/192 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 192 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/50 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/50 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/50 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 3 (OVERLAPS) 145/195 variables, 50/52 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/195 variables, 26/78 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/195 variables, 192/270 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/195 variables, 0/270 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 7 (OVERLAPS) 0/195 variables, 0/270 constraints. Problems are: Problem set: 0 solved, 192 unsolved
No progress, stopping.
After SMT solving in domain Int declared 195/195 variables, and 270 constraints, problems are : Problem set: 0 solved, 192 unsolved in 25314 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 192/192 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 30719ms problems are : Problem set: 0 solved, 192 unsolved
Search for dead transitions found 0 dead transitions in 30754ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 31192 ms. Remains : 50/50 places, 194/194 transitions.
[2026-05-23 18:24:34] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {12=1, 25=1, 87=1, 88=1, 133=2}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {12=1, 25=1, 93=1, 94=1, 141=2}
Produces a positive solution
Incomplete random walk after 10000 steps, including 41 resets, run finished after 48 ms. (steps per millisecond=208 ) properties (out of 3) seen :[5, 7, 6]
Current structural bounds on expressions (after cover walk) : Max Seen:[13, 55, 17] Max Struct:[+inf, +inf, +inf]
RANDOM walk for 40006 steps (115 resets) in 1042 ms. (38 steps per ms) remains 3/3 properties
BEST_FIRST walk for 40003 steps (8 resets) in 226 ms. (176 steps per ms) remains 3/3 properties
BEST_FIRST walk for 40003 steps (18 resets) in 187 ms. (212 steps per ms) remains 3/3 properties
[2026-05-23 18:24:35] [INFO ] Flatten gal took : 98 ms
BEST_FIRST walk for 40002 steps (8 resets) in 165 ms. (240 steps per ms) remains 3/3 properties
[2026-05-23 18:24:35] [INFO ] Flatten gal took : 45 ms
[2026-05-23 18:24:35] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality11907504622860378920.gal : 19 ms
[2026-05-23 18:24:35] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality11388410489590663400.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/ReachabilityCardinality11907504622860378920.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality11388410489590663400.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 ...330
Loading property file /tmp/ReachabilityCardinality11388410489590663400.prop.
SDD proceeding with computation,3 properties remain. new max is 4
SDD size :1 after 9
SDD proceeding with computation,3 properties remain. new max is 8
SDD size :9 after 30
SDD proceeding with computation,3 properties remain. new max is 16
SDD size :30 after 64
SDD proceeding with computation,3 properties remain. new max is 32
SDD size :64 after 13129
SDD proceeding with computation,3 properties remain. new max is 64
SDD size :13129 after 853328
Interrupted probabilistic random walk after 336311 steps, run timeout after 3001 ms. (steps per millisecond=112 ) properties seen :0 out of 3
Probabilistic random walk after 336311 steps, saw 251541 distinct states, run finished after 3015 ms. (steps per millisecond=111 ) properties seen :0
[2026-05-23 18:24:38] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
[2026-05-23 18:24:38] [INFO ] Invariant cache hit.
[2026-05-23 18:24:38] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/3 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 24/27 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/27 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (OVERLAPS) 122/149 variables, 14/17 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/149 variables, 11/28 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/149 variables, 0/28 constraints. Problems are: Problem set: 0 solved, 3 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 11/160 variables, 1/29 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/160 variables, 3/32 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/160 variables, 0/32 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 9 (OVERLAPS) 35/195 variables, 30/62 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/195 variables, 1/63 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/195 variables, 15/78 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/195 variables, 0/78 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 13 (OVERLAPS) 0/195 variables, 0/78 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 195/195 variables, and 78 constraints, problems are : Problem set: 0 solved, 3 unsolved in 239 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/3 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 24/27 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/27 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (OVERLAPS) 122/149 variables, 14/17 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/149 variables, 11/28 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/149 variables, 3/31 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/149 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 11/160 variables, 1/32 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/160 variables, 3/35 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/160 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 10 (OVERLAPS) 35/195 variables, 30/65 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/195 variables, 1/66 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/195 variables, 15/81 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/195 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 14 (OVERLAPS) 0/195 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 195/195 variables, and 81 constraints, problems are : Problem set: 0 solved, 3 unsolved in 325 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 573ms problems are : Problem set: 0 solved, 3 unsolved
Fused 3 Parikh solutions to 1 different solutions.
Parikh walk visited 0 properties in 1 ms.
Support contains 3 out of 50 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 194/194 transitions.
Applied a total of 0 rules in 15 ms. Remains 50 /50 variables (removed 0) and now considering 194/194 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 17 ms. Remains : 50/50 places, 194/194 transitions.
RANDOM walk for 40004 steps (113 resets) in 243 ms. (163 steps per ms) remains 3/3 properties
BEST_FIRST walk for 40004 steps (8 resets) in 117 ms. (339 steps per ms) remains 3/3 properties
BEST_FIRST walk for 40004 steps (17 resets) in 81 ms. (487 steps per ms) remains 3/3 properties
BEST_FIRST walk for 40004 steps (8 resets) in 72 ms. (548 steps per ms) remains 3/3 properties
Interrupted probabilistic random walk after 375492 steps, run timeout after 3001 ms. (steps per millisecond=125 ) properties seen :0 out of 3
Probabilistic random walk after 375492 steps, saw 280577 distinct states, run finished after 3001 ms. (steps per millisecond=125 ) properties seen :0
[2026-05-23 18:24:42] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
[2026-05-23 18:24:42] [INFO ] Invariant cache hit.
[2026-05-23 18:24:42] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/3 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 24/27 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/27 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (OVERLAPS) 122/149 variables, 14/17 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/149 variables, 11/28 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/149 variables, 0/28 constraints. Problems are: Problem set: 0 solved, 3 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 11/160 variables, 1/29 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/160 variables, 3/32 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/160 variables, 0/32 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 9 (OVERLAPS) 35/195 variables, 30/62 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/195 variables, 1/63 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/195 variables, 15/78 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/195 variables, 0/78 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 13 (OVERLAPS) 0/195 variables, 0/78 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Real declared 195/195 variables, and 78 constraints, problems are : Problem set: 0 solved, 3 unsolved in 197 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 3 unsolved
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/3 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 1 (OVERLAPS) 24/27 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/27 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 3 (OVERLAPS) 122/149 variables, 14/17 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/149 variables, 11/28 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/149 variables, 3/31 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/149 variables, 0/31 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 7 (OVERLAPS) 11/160 variables, 1/32 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/160 variables, 3/35 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/160 variables, 0/35 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 10 (OVERLAPS) 35/195 variables, 30/65 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/195 variables, 1/66 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/195 variables, 15/81 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/195 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 3 unsolved
At refinement iteration 14 (OVERLAPS) 0/195 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 3 unsolved
No progress, stopping.
After SMT solving in domain Int declared 195/195 variables, and 81 constraints, problems are : Problem set: 0 solved, 3 unsolved in 292 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 3/3 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 501ms problems are : Problem set: 0 solved, 3 unsolved
Fused 3 Parikh solutions to 1 different solutions.
Parikh walk visited 0 properties in 0 ms.
Support contains 3 out of 50 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 194/194 transitions.
Applied a total of 0 rules in 10 ms. Remains 50 /50 variables (removed 0) and now considering 194/194 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 10 ms. Remains : 50/50 places, 194/194 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 194/194 transitions.
Applied a total of 0 rules in 7 ms. Remains 50 /50 variables (removed 0) and now considering 194/194 (removed 0) transitions.
[2026-05-23 18:24:42] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
[2026-05-23 18:24:42] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:24:42] [INFO ] Implicit Places using invariants in 103 ms returned []
[2026-05-23 18:24:42] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
[2026-05-23 18:24:42] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:24:42] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:24:42] [INFO ] Implicit Places using invariants and state equation in 170 ms returned []
Implicit Place search using SMT with State Equation took 276 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-23 18:24:42] [INFO ] Redundant transitions in 11 ms returned []
Running 192 sub problems to find dead transitions.
[2026-05-23 18:24:42] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
[2026-05-23 18:24:42] [INFO ] Invariant cache hit.
[2026-05-23 18:24:42] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/50 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/50 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/50 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 3 (OVERLAPS) 145/195 variables, 50/52 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/195 variables, 26/78 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/195 variables, 0/78 constraints. Problems are: Problem set: 0 solved, 192 unsolved
SDD proceeding with computation,3 properties remain. new max is 128
SDD size :853328 after 7.26614e+06
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/195 variables, 0/78 constraints. Problems are: Problem set: 0 solved, 192 unsolved
No progress, stopping.
After SMT solving in domain Real declared 195/195 variables, and 78 constraints, problems are : Problem set: 0 solved, 192 unsolved in 4809 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 192/192 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 192 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/50 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/50 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/50 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 3 (OVERLAPS) 145/195 variables, 50/52 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/195 variables, 26/78 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/195 variables, 192/270 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/195 variables, 0/270 constraints. Problems are: Problem set: 0 solved, 192 unsolved
At refinement iteration 7 (OVERLAPS) 0/195 variables, 0/270 constraints. Problems are: Problem set: 0 solved, 192 unsolved
No progress, stopping.
After SMT solving in domain Int declared 195/195 variables, and 270 constraints, problems are : Problem set: 0 solved, 192 unsolved in 25163 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 192/192 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 30074ms problems are : Problem set: 0 solved, 192 unsolved
Search for dead transitions found 0 dead transitions in 30076ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 30381 ms. Remains : 50/50 places, 194/194 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 49 transitions
Reduce isomorphic transitions removed 49 transitions.
Iterating post reduction 0 with 49 rules applied. Total rules applied 49 place count 50 transition count 145
Performed 9 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 1 with 9 Pre rules applied. Total rules applied 49 place count 50 transition count 136
Deduced a syphon composed of 9 places in 0 ms
Reduce places removed 9 places and 0 transitions.
Iterating global reduction 1 with 18 rules applied. Total rules applied 67 place count 41 transition count 136
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 1 with 4 rules applied. Total rules applied 71 place count 39 transition count 134
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 72 place count 38 transition count 130
Iterating global reduction 1 with 1 rules applied. Total rules applied 73 place count 38 transition count 130
Applied a total of 73 rules in 30 ms. Remains 38 /50 variables (removed 12) and now considering 130/194 (removed 64) transitions.
Running SMT prover for 3 properties.
// Phase 1: matrix 130 rows 38 cols
[2026-05-23 18:25:13] [INFO ] Computed 2 invariants in 3 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-23 18:25:13] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-23 18:25:13] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:25:13] [INFO ] After 108ms SMT Verify possible using all constraints in real domain returned unsat :0 sat :0 real:3
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-23 18:25:13] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-23 18:25:13] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:25:13] [INFO ] After 57ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :3
TRAPS : Iteration 0
[2026-05-23 18:25:13] [INFO ] After 88ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :3
[2026-05-23 18:25:13] [INFO ] After 152ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :3
[2026-05-23 18:25:13] [INFO ] Flatten gal took : 40 ms
[2026-05-23 18:25:13] [INFO ] Flatten gal took : 18 ms
[2026-05-23 18:25:13] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality12195037072568787705.gal : 9 ms
[2026-05-23 18:25:13] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality1327209392960854838.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/ReachabilityCardinality12195037072568787705.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality1327209392960854838.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 ...329
Loading property file /tmp/ReachabilityCardinality1327209392960854838.prop.
SDD proceeding with computation,3 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,3 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,3 properties remain. new max is 16
SDD size :10 after 175
SDD proceeding with computation,3 properties remain. new max is 32
SDD size :175 after 3113
SDD proceeding with computation,3 properties remain. new max is 64
SDD size :3113 after 183143
SDD proceeding with computation,3 properties remain. new max is 128
SDD size :183143 after 1.28362e+06
SDD proceeding with computation,3 properties remain. new max is 256
SDD size :1.28362e+06 after 6.38924e+06
SDD proceeding with computation,3 properties remain. new max is 512
SDD size :6.38924e+06 after 2.81714e+07
SDD proceeding with computation,3 properties remain. new max is 1024
SDD size :2.81714e+07 after 1.17831e+08
Detected timeout of ITS tools.
[2026-05-23 18:25:25] [INFO ] Flatten gal took : 39 ms
[2026-05-23 18:25:25] [INFO ] Applying decomposition
[2026-05-23 18:25:25] [INFO ] Flatten gal took : 27 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/graph6487999046680394763.txt' '-o' '/tmp/graph6487999046680394763.bin' '-w' '/tmp/graph6487999046680394763.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph6487999046680394763.bin' '-l' '-1' '-v' '-w' '/tmp/graph6487999046680394763.weights' '-q' '0' '-e' '0.001'
[2026-05-23 18:25:26] [INFO ] Decomposing Gal with order
[2026-05-23 18:25:26] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-23 18:25:26] [INFO ] Removed a total of 399 redundant transitions.
[2026-05-23 18:25:26] [INFO ] Flatten gal took : 106 ms
[2026-05-23 18:25:26] [INFO ] Fuse similar labels procedure discarded/fused a total of 12 labels/synchronizations in 19 ms.
[2026-05-23 18:25:26] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality11163010211266758417.gal : 7 ms
[2026-05-23 18:25:26] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality16908311683287224118.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/ReachabilityCardinality11163010211266758417.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality16908311683287224118.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/ReachabilityCardinality16908311683287224118.prop.
Detected timeout of ITS tools.
[2026-05-23 18:25:28] [INFO ] Flatten gal took : 20 ms
[2026-05-23 18:25:28] [INFO ] Applying decomposition
[2026-05-23 18:25:28] [INFO ] Flatten gal took : 14 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/graph8868172564655600240.txt' '-o' '/tmp/graph8868172564655600240.bin' '-w' '/tmp/graph8868172564655600240.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph8868172564655600240.bin' '-l' '-1' '-v' '-w' '/tmp/graph8868172564655600240.weights' '-q' '0' '-e' '0.001'
[2026-05-23 18:25:28] [INFO ] Decomposing Gal with order
[2026-05-23 18:25:28] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-23 18:25:28] [INFO ] Removed a total of 256 redundant transitions.
[2026-05-23 18:25:28] [INFO ] Flatten gal took : 37 ms
[2026-05-23 18:25:28] [INFO ] Fuse similar labels procedure discarded/fused a total of 10 labels/synchronizations in 7 ms.
[2026-05-23 18:25:28] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1806549934385330428.gal : 5 ms
[2026-05-23 18:25:28] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality2139630382308888236.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/ReachabilityCardinality1806549934385330428.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality2139630382308888236.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/ReachabilityCardinality2139630382308888236.prop.
SDD proceeding with computation,3 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,3 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,3 properties remain. new max is 16
SDD size :10 after 63
Invariant property MIN0 does not hold.
SDD proceeding with computation,2 properties remain. new max is 16
SDD size :63 after 9.55588e+07
Invariant property MIN2 does not hold.
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :9.55588e+07 after 5.19338e+09
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30689 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[13, 55, 17] Max Struct:[+inf, +inf, +inf]
Starting property specific reduction for DoubleLock-PT-p2s1-UpperBounds-08
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-23 18:25:43] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
// Phase 1: matrix 145 rows 50 cols
[2026-05-23 18:25:43] [INFO ] Computed 2 invariants in 3 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (32 resets) in 24 ms. (400 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 11 ms. (833 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[10] Max Struct:[+inf]
[2026-05-23 18:25:43] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
[2026-05-23 18:25:43] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 18:25:43] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-23 18:25:43] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:25:43] [INFO ] [Real]Absence check using state equation in 51 ms returned sat
[2026-05-23 18:25:43] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:25:43] [INFO ] [Real]Added 26 Read/Feed constraints in 24 ms returned sat
[2026-05-23 18:25:43] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 18:25:43] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-23 18:25:43] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:25:44] [INFO ] [Nat]Absence check using state equation in 49 ms returned sat
[2026-05-23 18:25:44] [INFO ] [Nat]Added 26 Read/Feed constraints in 13 ms returned sat
[2026-05-23 18:25:44] [INFO ] Computed and/alt/rep : 62/426/62 causal constraints (skipped 81 transitions) in 19 ms.
[2026-05-23 18:25:44] [INFO ] Added : 26 causal constraints over 6 iterations in 136 ms. Result :sat
Minimization took 67 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[10] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[10] Max Struct:[+inf]
Support contains 1 out of 50 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 194/194 transitions.
Discarding 1 places :
Symmetric choice reduction at 0 with 1 rule applications. Total rules 1 place count 49 transition count 190
Iterating global reduction 0 with 1 rules applied. Total rules applied 2 place count 49 transition count 190
Applied a total of 2 rules in 10 ms. Remains 49 /50 variables (removed 1) and now considering 190/194 (removed 4) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 11 ms. Remains : 49/50 places, 190/194 transitions.
[2026-05-23 18:25:44] [INFO ] Flow matrix only has 141 transitions (discarded 49 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {5=2, 12=1, 24=1, 92=1, 93=1, 138=2}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {12=1, 24=1, 89=1, 90=1, 135=2}
Produces a positive solution
Incomplete random walk after 10000 steps, including 38 resets, run finished after 30 ms. (steps per millisecond=333 ) properties (out of 1) seen :[5]
Current structural bounds on expressions (after cover walk) : Max Seen:[10] Max Struct:[+inf]
[2026-05-23 18:25:44] [INFO ] Flow matrix only has 141 transitions (discarded 49 similar events)
// Phase 1: matrix 141 rows 49 cols
[2026-05-23 18:25:44] [INFO ] Computed 2 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[10] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2867 resets) in 1759 ms. (568 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 587 ms. (1700 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[16] Max Struct:[+inf]
[2026-05-23 18:25:46] [INFO ] Flow matrix only has 141 transitions (discarded 49 similar events)
[2026-05-23 18:25:46] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:25:46] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-23 18:25:46] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:25:46] [INFO ] [Real]Absence check using state equation in 47 ms returned sat
[2026-05-23 18:25:46] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:25:46] [INFO ] [Real]Added 26 Read/Feed constraints in 11 ms returned sat
[2026-05-23 18:25:46] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:25:46] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-23 18:25:46] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:25:46] [INFO ] [Nat]Absence check using state equation in 45 ms returned sat
[2026-05-23 18:25:47] [INFO ] [Nat]Added 26 Read/Feed constraints in 14 ms returned sat
[2026-05-23 18:25:47] [INFO ] Computed and/alt/rep : 60/382/60 causal constraints (skipped 79 transitions) in 13 ms.
[2026-05-23 18:25:47] [INFO ] Added : 15 causal constraints over 4 iterations in 92 ms. Result :sat
Minimization took 50 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[16] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[16] Max Struct:[+inf]
Support contains 1 out of 49 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 49/49 places, 190/190 transitions.
Applied a total of 0 rules in 6 ms. Remains 49 /49 variables (removed 0) and now considering 190/190 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 6 ms. Remains : 49/49 places, 190/190 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 49/49 places, 190/190 transitions.
Applied a total of 0 rules in 6 ms. Remains 49 /49 variables (removed 0) and now considering 190/190 (removed 0) transitions.
[2026-05-23 18:25:47] [INFO ] Flow matrix only has 141 transitions (discarded 49 similar events)
[2026-05-23 18:25:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:25:47] [INFO ] Implicit Places using invariants in 86 ms returned []
[2026-05-23 18:25:47] [INFO ] Flow matrix only has 141 transitions (discarded 49 similar events)
[2026-05-23 18:25:47] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:25:47] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:25:47] [INFO ] Implicit Places using invariants and state equation in 191 ms returned []
Implicit Place search using SMT with State Equation took 280 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-23 18:25:47] [INFO ] Redundant transitions in 2 ms returned []
Running 188 sub problems to find dead transitions.
[2026-05-23 18:25:47] [INFO ] Flow matrix only has 141 transitions (discarded 49 similar events)
[2026-05-23 18:25:47] [INFO ] Invariant cache hit.
[2026-05-23 18:25:47] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/49 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/49 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/49 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 3 (OVERLAPS) 141/190 variables, 49/51 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/190 variables, 26/77 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/190 variables, 0/77 constraints. Problems are: Problem set: 0 solved, 188 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/190 variables, 0/77 constraints. Problems are: Problem set: 0 solved, 188 unsolved
No progress, stopping.
After SMT solving in domain Real declared 190/190 variables, and 77 constraints, problems are : Problem set: 0 solved, 188 unsolved in 4704 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 49/49 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 188/188 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 188 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/49 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/49 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/49 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 3 (OVERLAPS) 141/190 variables, 49/51 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/190 variables, 26/77 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/190 variables, 188/265 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/190 variables, 0/265 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 7 (OVERLAPS) 0/190 variables, 0/265 constraints. Problems are: Problem set: 0 solved, 188 unsolved
No progress, stopping.
After SMT solving in domain Int declared 190/190 variables, and 265 constraints, problems are : Problem set: 0 solved, 188 unsolved in 23767 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 49/49 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 188/188 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 28544ms problems are : Problem set: 0 solved, 188 unsolved
Search for dead transitions found 0 dead transitions in 28546ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 28845 ms. Remains : 49/49 places, 190/190 transitions.
[2026-05-23 18:26:16] [INFO ] Flow matrix only has 141 transitions (discarded 49 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {5=2, 12=1, 24=1, 92=1, 93=1, 138=2}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {12=1, 24=1, 89=1, 90=1, 135=2}
Produces a positive solution
Incomplete random walk after 10000 steps, including 32 resets, run finished after 28 ms. (steps per millisecond=357 ) properties (out of 1) seen :[5]
Current structural bounds on expressions (after cover walk) : Max Seen:[16] Max Struct:[+inf]
[2026-05-23 18:26:16] [INFO ] Flow matrix only has 141 transitions (discarded 49 similar events)
[2026-05-23 18:26:16] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[16] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2870 resets) in 1726 ms. (579 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 581 ms. (1718 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[16] Max Struct:[+inf]
[2026-05-23 18:26:18] [INFO ] Flow matrix only has 141 transitions (discarded 49 similar events)
[2026-05-23 18:26:18] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:26:18] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-23 18:26:18] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:26:18] [INFO ] [Real]Absence check using state equation in 51 ms returned sat
[2026-05-23 18:26:18] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:26:18] [INFO ] [Real]Added 26 Read/Feed constraints in 13 ms returned sat
[2026-05-23 18:26:18] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:26:18] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-23 18:26:18] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 0 ms returned sat
[2026-05-23 18:26:18] [INFO ] [Nat]Absence check using state equation in 44 ms returned sat
[2026-05-23 18:26:18] [INFO ] [Nat]Added 26 Read/Feed constraints in 15 ms returned sat
[2026-05-23 18:26:18] [INFO ] Computed and/alt/rep : 60/382/60 causal constraints (skipped 79 transitions) in 13 ms.
[2026-05-23 18:26:18] [INFO ] Added : 15 causal constraints over 4 iterations in 106 ms. Result :sat
Minimization took 51 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[16] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[16] Max Struct:[+inf]
Support contains 1 out of 49 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 49/49 places, 190/190 transitions.
Applied a total of 0 rules in 7 ms. Remains 49 /49 variables (removed 0) and now considering 190/190 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 7 ms. Remains : 49/49 places, 190/190 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 49/49 places, 190/190 transitions.
Applied a total of 0 rules in 5 ms. Remains 49 /49 variables (removed 0) and now considering 190/190 (removed 0) transitions.
[2026-05-23 18:26:18] [INFO ] Flow matrix only has 141 transitions (discarded 49 similar events)
[2026-05-23 18:26:18] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:26:19] [INFO ] Implicit Places using invariants in 104 ms returned []
[2026-05-23 18:26:19] [INFO ] Flow matrix only has 141 transitions (discarded 49 similar events)
[2026-05-23 18:26:19] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:26:19] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:26:19] [INFO ] Implicit Places using invariants and state equation in 173 ms returned []
Implicit Place search using SMT with State Equation took 280 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-23 18:26:19] [INFO ] Redundant transitions in 3 ms returned []
Running 188 sub problems to find dead transitions.
[2026-05-23 18:26:19] [INFO ] Flow matrix only has 141 transitions (discarded 49 similar events)
[2026-05-23 18:26:19] [INFO ] Invariant cache hit.
[2026-05-23 18:26:19] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/49 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/49 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/49 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 3 (OVERLAPS) 141/190 variables, 49/51 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/190 variables, 26/77 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/190 variables, 0/77 constraints. Problems are: Problem set: 0 solved, 188 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/190 variables, 0/77 constraints. Problems are: Problem set: 0 solved, 188 unsolved
No progress, stopping.
After SMT solving in domain Real declared 190/190 variables, and 77 constraints, problems are : Problem set: 0 solved, 188 unsolved in 4916 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 49/49 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 188/188 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 188 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/49 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/49 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/49 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 3 (OVERLAPS) 141/190 variables, 49/51 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/190 variables, 26/77 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/190 variables, 188/265 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/190 variables, 0/265 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 7 (OVERLAPS) 0/190 variables, 0/265 constraints. Problems are: Problem set: 0 solved, 188 unsolved
No progress, stopping.
After SMT solving in domain Int declared 190/190 variables, and 265 constraints, problems are : Problem set: 0 solved, 188 unsolved in 24455 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 49/49 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 188/188 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 29443ms problems are : Problem set: 0 solved, 188 unsolved
Search for dead transitions found 0 dead transitions in 29445ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 29740 ms. Remains : 49/49 places, 190/190 transitions.
[2026-05-23 18:26:48] [INFO ] Flow matrix only has 141 transitions (discarded 49 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {5=2, 12=1, 24=1, 92=1, 93=1, 138=2}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {12=1, 24=1, 89=1, 90=1, 135=2}
Produces a positive solution
Incomplete random walk after 10000 steps, including 30 resets, run finished after 48 ms. (steps per millisecond=208 ) properties (out of 1) seen :[8]
Current structural bounds on expressions (after cover walk) : Max Seen:[16] Max Struct:[+inf]
[2026-05-23 18:26:48] [INFO ] Flatten gal took : 57 ms
RANDOM walk for 40000 steps (107 resets) in 267 ms. (149 steps per ms) remains 1/1 properties
[2026-05-23 18:26:48] [INFO ] Flatten gal took : 29 ms
[2026-05-23 18:26:48] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality16431400539337371725.gal : 5 ms
[2026-05-23 18:26:48] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality4694137417365503160.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/ReachabilityCardinality16431400539337371725.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality4694137417365503160.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 ...329
BEST_FIRST walk for 40003 steps (8 resets) in 80 ms. (493 steps per ms) remains 1/1 properties
Loading property file /tmp/ReachabilityCardinality4694137417365503160.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 9
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :9 after 64
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :64 after 862
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :862 after 15024
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :15024 after 134915
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :134915 after 451967
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :451967 after 1.08274e+06
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :1.08274e+06 after 2.33931e+06
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :2.33931e+06 after 4.84766e+06
Interrupted probabilistic random walk after 1583739 steps, run timeout after 3001 ms. (steps per millisecond=527 ) properties seen :0 out of 1
Probabilistic random walk after 1583739 steps, saw 1011240 distinct states, run finished after 3001 ms. (steps per millisecond=527 ) properties seen :0
[2026-05-23 18:26:52] [INFO ] Flow matrix only has 141 transitions (discarded 49 similar events)
[2026-05-23 18:26:52] [INFO ] Invariant cache hit.
[2026-05-23 18:26:52] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 7/8 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 126/134 variables, 10/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/134 variables, 6/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/134 variables, 0/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 13/147 variables, 1/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/147 variables, 1/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/147 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 43/190 variables, 37/56 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/190 variables, 1/57 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/190 variables, 20/77 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/190 variables, 0/77 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 0/190 variables, 0/77 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 190/190 variables, and 77 constraints, problems are : Problem set: 0 solved, 1 unsolved in 129 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 49/49 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 7/8 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 126/134 variables, 10/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/134 variables, 6/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/134 variables, 1/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/134 variables, 0/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 13/147 variables, 1/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/147 variables, 1/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/147 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 43/190 variables, 37/57 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/190 variables, 1/58 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/190 variables, 20/78 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/190 variables, 0/78 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 0/190 variables, 0/78 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 190/190 variables, and 78 constraints, problems are : Problem set: 0 solved, 1 unsolved in 151 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 49/49 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 298ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 90 ms.
Support contains 1 out of 49 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 49/49 places, 190/190 transitions.
Applied a total of 0 rules in 7 ms. Remains 49 /49 variables (removed 0) and now considering 190/190 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 7 ms. Remains : 49/49 places, 190/190 transitions.
RANDOM walk for 40000 steps (112 resets) in 339 ms. (117 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40004 steps (8 resets) in 41 ms. (952 steps per ms) remains 1/1 properties
SDD proceeding with computation,1 properties remain. new max is 2048
SDD size :4.84766e+06 after 9.85937e+06
Interrupted probabilistic random walk after 1686479 steps, run timeout after 3001 ms. (steps per millisecond=561 ) properties seen :0 out of 1
Probabilistic random walk after 1686479 steps, saw 1074570 distinct states, run finished after 3001 ms. (steps per millisecond=561 ) properties seen :0
[2026-05-23 18:26:55] [INFO ] Flow matrix only has 141 transitions (discarded 49 similar events)
[2026-05-23 18:26:55] [INFO ] Invariant cache hit.
[2026-05-23 18:26:55] [INFO ] State equation strengthened by 26 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) 7/8 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 126/134 variables, 10/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/134 variables, 6/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/134 variables, 0/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 13/147 variables, 1/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/147 variables, 1/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/147 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 43/190 variables, 37/56 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/190 variables, 1/57 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/190 variables, 20/77 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/190 variables, 0/77 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 0/190 variables, 0/77 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 190/190 variables, and 77 constraints, problems are : Problem set: 0 solved, 1 unsolved in 127 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 49/49 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 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) 7/8 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/8 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 126/134 variables, 10/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/134 variables, 6/17 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/134 variables, 1/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/134 variables, 0/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 13/147 variables, 1/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/147 variables, 1/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/147 variables, 0/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 43/190 variables, 37/57 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/190 variables, 1/58 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/190 variables, 20/78 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (INCLUDED_ONLY) 0/190 variables, 0/78 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (OVERLAPS) 0/190 variables, 0/78 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 190/190 variables, and 78 constraints, problems are : Problem set: 0 solved, 1 unsolved in 362 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 49/49 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 519ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 68 ms.
Support contains 1 out of 49 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 49/49 places, 190/190 transitions.
Applied a total of 0 rules in 6 ms. Remains 49 /49 variables (removed 0) and now considering 190/190 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 7 ms. Remains : 49/49 places, 190/190 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 49/49 places, 190/190 transitions.
Applied a total of 0 rules in 6 ms. Remains 49 /49 variables (removed 0) and now considering 190/190 (removed 0) transitions.
[2026-05-23 18:26:56] [INFO ] Flow matrix only has 141 transitions (discarded 49 similar events)
[2026-05-23 18:26:56] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:26:56] [INFO ] Implicit Places using invariants in 434 ms returned []
[2026-05-23 18:26:56] [INFO ] Flow matrix only has 141 transitions (discarded 49 similar events)
[2026-05-23 18:26:56] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:26:56] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:26:56] [INFO ] Implicit Places using invariants and state equation in 189 ms returned []
Implicit Place search using SMT with State Equation took 635 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-23 18:26:56] [INFO ] Redundant transitions in 2 ms returned []
Running 188 sub problems to find dead transitions.
[2026-05-23 18:26:56] [INFO ] Flow matrix only has 141 transitions (discarded 49 similar events)
[2026-05-23 18:26:56] [INFO ] Invariant cache hit.
[2026-05-23 18:26:56] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/49 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/49 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/49 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 3 (OVERLAPS) 141/190 variables, 49/51 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/190 variables, 26/77 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/190 variables, 0/77 constraints. Problems are: Problem set: 0 solved, 188 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 0/190 variables, 0/77 constraints. Problems are: Problem set: 0 solved, 188 unsolved
No progress, stopping.
After SMT solving in domain Real declared 190/190 variables, and 77 constraints, problems are : Problem set: 0 solved, 188 unsolved in 4781 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 49/49 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 188/188 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 188 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/49 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/49 variables, 1/2 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/49 variables, 0/2 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 3 (OVERLAPS) 141/190 variables, 49/51 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/190 variables, 26/77 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/190 variables, 188/265 constraints. Problems are: Problem set: 0 solved, 188 unsolved
SDD proceeding with computation,1 properties remain. new max is 4096
SDD size :9.85937e+06 after 1.9878e+07
At refinement iteration 6 (INCLUDED_ONLY) 0/190 variables, 0/265 constraints. Problems are: Problem set: 0 solved, 188 unsolved
At refinement iteration 7 (OVERLAPS) 0/190 variables, 0/265 constraints. Problems are: Problem set: 0 solved, 188 unsolved
No progress, stopping.
After SMT solving in domain Int declared 190/190 variables, and 265 constraints, problems are : Problem set: 0 solved, 188 unsolved in 23546 ms.
Refiners :[Positive P Invariants (semi-flows): 1/1 constraints, Generalized P Invariants (flows): 1/1 constraints, State Equation: 49/49 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 188/188 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 28408ms problems are : Problem set: 0 solved, 188 unsolved
Search for dead transitions found 0 dead transitions in 28411ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 29077 ms. Remains : 49/49 places, 190/190 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 49 transitions
Reduce isomorphic transitions removed 49 transitions.
Iterating post reduction 0 with 49 rules applied. Total rules applied 49 place count 49 transition count 141
Performed 10 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 1 with 10 Pre rules applied. Total rules applied 49 place count 49 transition count 131
Deduced a syphon composed of 10 places in 0 ms
Reduce places removed 10 places and 0 transitions.
Iterating global reduction 1 with 20 rules applied. Total rules applied 69 place count 39 transition count 131
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 1 with 4 rules applied. Total rules applied 73 place count 37 transition count 129
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 74 place count 36 transition count 125
Iterating global reduction 1 with 1 rules applied. Total rules applied 75 place count 36 transition count 125
Applied a total of 75 rules in 15 ms. Remains 36 /49 variables (removed 13) and now considering 125/190 (removed 65) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 125 rows 36 cols
[2026-05-23 18:27:25] [INFO ] Computed 2 invariants in 2 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-23 18:27:25] [INFO ] [Real]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-23 18:27:25] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:27:25] [INFO ] After 78ms 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 18:27:25] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-23 18:27:25] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:27:25] [INFO ] After 41ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-23 18:27:25] [INFO ] After 52ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-23 18:27:25] [INFO ] After 93ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-23 18:27:25] [INFO ] Flatten gal took : 12 ms
[2026-05-23 18:27:25] [INFO ] Flatten gal took : 11 ms
[2026-05-23 18:27:25] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality7272394348756960122.gal : 2 ms
[2026-05-23 18:27:25] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality9326393628929259193.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/ReachabilityCardinality7272394348756960122.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality9326393628929259193.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/ReachabilityCardinality9326393628929259193.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 175
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :175 after 3047
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :3047 after 172196
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :172196 after 1.2704e+06
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :1.2704e+06 after 6.33955e+06
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :6.33955e+06 after 2.81134e+07
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :2.81134e+07 after 1.17572e+08
Detected timeout of ITS tools.
[2026-05-23 18:27:39] [INFO ] Flatten gal took : 16 ms
[2026-05-23 18:27:39] [INFO ] Applying decomposition
[2026-05-23 18:27:39] [INFO ] Flatten gal took : 14 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/graph5737114501198864448.txt' '-o' '/tmp/graph5737114501198864448.bin' '-w' '/tmp/graph5737114501198864448.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph5737114501198864448.bin' '-l' '-1' '-v' '-w' '/tmp/graph5737114501198864448.weights' '-q' '0' '-e' '0.001'
[2026-05-23 18:27:39] [INFO ] Decomposing Gal with order
[2026-05-23 18:27:39] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-23 18:27:39] [INFO ] Removed a total of 397 redundant transitions.
[2026-05-23 18:27:39] [INFO ] Flatten gal took : 29 ms
[2026-05-23 18:27:39] [INFO ] Fuse similar labels procedure discarded/fused a total of 14 labels/synchronizations in 9 ms.
[2026-05-23 18:27:39] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality14086093642540071356.gal : 3 ms
[2026-05-23 18:27:39] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality4109444930259513790.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/ReachabilityCardinality14086093642540071356.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality4109444930259513790.prop' '--nowitness'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...308
Loading property file /tmp/ReachabilityCardinality4109444930259513790.prop.
Detected timeout of ITS tools.
[2026-05-23 18:27:40] [INFO ] Flatten gal took : 14 ms
[2026-05-23 18:27:40] [INFO ] Applying decomposition
[2026-05-23 18:27:40] [INFO ] Flatten gal took : 8 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/graph1348517394541794028.txt' '-o' '/tmp/graph1348517394541794028.bin' '-w' '/tmp/graph1348517394541794028.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph1348517394541794028.bin' '-l' '-1' '-v' '-w' '/tmp/graph1348517394541794028.weights' '-q' '0' '-e' '0.001'
[2026-05-23 18:27:40] [INFO ] Decomposing Gal with order
[2026-05-23 18:27:40] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-23 18:27:40] [INFO ] Removed a total of 252 redundant transitions.
[2026-05-23 18:27:40] [INFO ] Flatten gal took : 19 ms
[2026-05-23 18:27:40] [INFO ] Fuse similar labels procedure discarded/fused a total of 14 labels/synchronizations in 4 ms.
[2026-05-23 18:27:40] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality12320650311977027012.gal : 2 ms
[2026-05-23 18:27:40] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality12057869046584724805.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/ReachabilityCardinality12320650311977027012.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality12057869046584724805.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/ReachabilityCardinality12057869046584724805.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 10
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :10 after 20
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :20 after 126
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30383 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[16] Max Struct:[+inf]
Ending property specific reduction for DoubleLock-PT-p2s1-UpperBounds-08 in 131846 ms.
Starting property specific reduction for DoubleLock-PT-p2s1-UpperBounds-12
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-23 18:27:55] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
// Phase 1: matrix 145 rows 50 cols
[2026-05-23 18:27:55] [INFO ] Computed 2 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (31 resets) in 16 ms. (588 steps per ms)
BEST_FIRST walk for 10001 steps (3 resets) in 7 ms. (1250 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[8] Max Struct:[+inf]
[2026-05-23 18:27:55] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
[2026-05-23 18:27:55] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 18:27:55] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-23 18:27:55] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:27:55] [INFO ] [Real]Absence check using state equation in 45 ms returned sat
[2026-05-23 18:27:55] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:27:55] [INFO ] [Real]Added 26 Read/Feed constraints in 10 ms returned sat
[2026-05-23 18:27:55] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 18:27:55] [INFO ] [Nat]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-23 18:27:55] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:27:55] [INFO ] [Nat]Absence check using state equation in 41 ms returned sat
[2026-05-23 18:27:55] [INFO ] [Nat]Added 26 Read/Feed constraints in 11 ms returned sat
[2026-05-23 18:27:55] [INFO ] Computed and/alt/rep : 62/426/62 causal constraints (skipped 81 transitions) in 12 ms.
[2026-05-23 18:27:55] [INFO ] Added : 23 causal constraints over 5 iterations in 106 ms. Result :sat
Minimization took 59 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[8] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[8] Max Struct:[+inf]
Support contains 1 out of 50 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 194/194 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 50 transition count 192
Applied a total of 2 rules in 7 ms. Remains 50 /50 variables (removed 0) and now considering 192/194 (removed 2) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 7 ms. Remains : 50/50 places, 192/194 transitions.
[2026-05-23 18:27:56] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {11=1, 24=1, 94=1, 95=1, 141=2}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {11=1, 24=1, 88=1, 89=1, 136=2}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 20 ms. (steps per millisecond=500 ) properties (out of 1) seen :[11]
Current structural bounds on expressions (after cover walk) : Max Seen:[11] Max Struct:[+inf]
[2026-05-23 18:27:56] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
// Phase 1: matrix 143 rows 50 cols
[2026-05-23 18:27:56] [INFO ] Computed 3 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[11] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1788 ms. (558 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 696 ms. (1434 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1328] Max Struct:[+inf]
[2026-05-23 18:27:58] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:27:58] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:27:58] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-23 18:27:58] [INFO ] [Real]Absence check using state equation in 45 ms returned sat
[2026-05-23 18:27:58] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:27:58] [INFO ] [Real]Added 26 Read/Feed constraints in 15 ms returned sat
[2026-05-23 18:27:58] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:27:58] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-23 18:27:58] [INFO ] [Nat]Absence check using state equation in 43 ms returned sat
[2026-05-23 18:27:58] [INFO ] [Nat]Added 26 Read/Feed constraints in 9 ms returned sat
[2026-05-23 18:27:58] [INFO ] Computed and/alt/rep : 61/422/61 causal constraints (skipped 80 transitions) in 12 ms.
[2026-05-23 18:27:58] [INFO ] Added : 29 causal constraints over 7 iterations in 143 ms. Result :sat
Minimization took 59 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1328] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1328] Max Struct:[+inf]
Support contains 1 out of 50 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 192/192 transitions.
Applied a total of 0 rules in 6 ms. Remains 50 /50 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 6 ms. Remains : 50/50 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 192/192 transitions.
Applied a total of 0 rules in 3 ms. Remains 50 /50 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-23 18:28:02] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:28:02] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:28:02] [INFO ] Implicit Places using invariants in 106 ms returned []
[2026-05-23 18:28:02] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:28:02] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:28:02] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:28:02] [INFO ] Implicit Places using invariants and state equation in 198 ms returned []
Implicit Place search using SMT with State Equation took 306 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-23 18:28:02] [INFO ] Redundant transitions in 0 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-23 18:28:02] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:28:02] [INFO ] Invariant cache hit.
[2026-05-23 18:28:02] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/50 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/50 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 143/193 variables, 50/53 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/193 variables, 26/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/193 variables, 0/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (OVERLAPS) 0/193 variables, 0/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 193/193 variables, and 79 constraints, problems are : Problem set: 0 solved, 190 unsolved in 3733 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/50 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/50 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 143/193 variables, 50/53 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/193 variables, 26/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/193 variables, 190/269 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/193 variables, 0/269 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (OVERLAPS) 0/193 variables, 0/269 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 269 constraints, problems are : Problem set: 0 solved, 190 unsolved in 30021 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 33814ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 33815ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 34135 ms. Remains : 50/50 places, 192/192 transitions.
[2026-05-23 18:28:36] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {11=1, 24=1, 94=1, 95=1, 141=2}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {11=1, 24=1, 88=1, 89=1, 136=2}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 20 ms. (steps per millisecond=500 ) properties (out of 1) seen :[15]
Current structural bounds on expressions (after cover walk) : Max Seen:[1328] Max Struct:[+inf]
[2026-05-23 18:28:36] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:28:36] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[1328] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1773 ms. (563 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 582 ms. (1715 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1377] Max Struct:[+inf]
[2026-05-23 18:28:38] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:28:38] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:28:38] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-23 18:28:38] [INFO ] [Real]Absence check using state equation in 48 ms returned sat
[2026-05-23 18:28:38] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:28:38] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-23 18:28:38] [INFO ] [Nat]Absence check using state equation in 44 ms returned sat
[2026-05-23 18:28:38] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:28:38] [INFO ] [Nat]Added 26 Read/Feed constraints in 11 ms returned sat
[2026-05-23 18:28:38] [INFO ] Computed and/alt/rep : 61/422/61 causal constraints (skipped 80 transitions) in 12 ms.
[2026-05-23 18:28:39] [INFO ] Added : 26 causal constraints over 6 iterations in 114 ms. Result :sat
Minimization took 54 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1377] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1377] Max Struct:[+inf]
Support contains 1 out of 50 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 192/192 transitions.
Applied a total of 0 rules in 4 ms. Remains 50 /50 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 50/50 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 192/192 transitions.
Applied a total of 0 rules in 3 ms. Remains 50 /50 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-23 18:28:41] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:28:41] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:28:41] [INFO ] Implicit Places using invariants in 96 ms returned []
[2026-05-23 18:28:41] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:28:41] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:28:41] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:28:41] [INFO ] Implicit Places using invariants and state equation in 174 ms returned []
Implicit Place search using SMT with State Equation took 271 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-23 18:28:41] [INFO ] Redundant transitions in 0 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-23 18:28:41] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:28:41] [INFO ] Invariant cache hit.
[2026-05-23 18:28:41] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/50 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/50 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 143/193 variables, 50/53 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/193 variables, 26/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/193 variables, 0/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (OVERLAPS) 0/193 variables, 0/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 193/193 variables, and 79 constraints, problems are : Problem set: 0 solved, 190 unsolved in 3392 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/50 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/50 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 143/193 variables, 50/53 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/193 variables, 26/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/193 variables, 190/269 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/193 variables, 0/269 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (OVERLAPS) 0/193 variables, 0/269 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 269 constraints, problems are : Problem set: 0 solved, 190 unsolved in 30012 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 33455ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 33456ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 33737 ms. Remains : 50/50 places, 192/192 transitions.
[2026-05-23 18:29:14] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {11=1, 24=1, 94=1, 95=1, 141=2}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {11=1, 24=1, 88=1, 89=1, 136=2}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 25 ms. (steps per millisecond=400 ) properties (out of 1) seen :[14]
Current structural bounds on expressions (after cover walk) : Max Seen:[1377] Max Struct:[+inf]
[2026-05-23 18:29:15] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:29:15] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[1377] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1845 ms. (541 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 658 ms. (1517 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1487] Max Struct:[+inf]
[2026-05-23 18:29:17] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:29:17] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:29:17] [INFO ] [Real]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-23 18:29:17] [INFO ] [Real]Absence check using state equation in 50 ms returned sat
[2026-05-23 18:29:17] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:29:17] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-23 18:29:17] [INFO ] [Nat]Absence check using state equation in 44 ms returned sat
[2026-05-23 18:29:17] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:29:17] [INFO ] [Nat]Added 26 Read/Feed constraints in 10 ms returned sat
[2026-05-23 18:29:17] [INFO ] Computed and/alt/rep : 61/422/61 causal constraints (skipped 80 transitions) in 13 ms.
[2026-05-23 18:29:17] [INFO ] Added : 26 causal constraints over 6 iterations in 120 ms. Result :sat
Minimization took 58 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1487] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1487] Max Struct:[+inf]
Support contains 1 out of 50 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 192/192 transitions.
Applied a total of 0 rules in 5 ms. Remains 50 /50 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 50/50 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 192/192 transitions.
Applied a total of 0 rules in 4 ms. Remains 50 /50 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-23 18:29:20] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:29:20] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:29:20] [INFO ] Implicit Places using invariants in 94 ms returned []
[2026-05-23 18:29:20] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:29:20] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:29:20] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:29:20] [INFO ] Implicit Places using invariants and state equation in 177 ms returned []
Implicit Place search using SMT with State Equation took 272 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-23 18:29:20] [INFO ] Redundant transitions in 0 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-23 18:29:20] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:29:20] [INFO ] Invariant cache hit.
[2026-05-23 18:29:20] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/50 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/50 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 143/193 variables, 50/53 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/193 variables, 26/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/193 variables, 0/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (OVERLAPS) 0/193 variables, 0/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 193/193 variables, and 79 constraints, problems are : Problem set: 0 solved, 190 unsolved in 3585 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/50 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/50 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 143/193 variables, 50/53 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/193 variables, 26/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/193 variables, 190/269 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/193 variables, 0/269 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (OVERLAPS) 0/193 variables, 0/269 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 269 constraints, problems are : Problem set: 0 solved, 190 unsolved in 30013 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 33648ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 33649ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 33936 ms. Remains : 50/50 places, 192/192 transitions.
[2026-05-23 18:29:54] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {11=1, 24=1, 94=1, 95=1, 141=2}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {11=1, 24=1, 88=1, 89=1, 136=2}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 20 ms. (steps per millisecond=500 ) properties (out of 1) seen :[21]
Current structural bounds on expressions (after cover walk) : Max Seen:[1487] Max Struct:[+inf]
[2026-05-23 18:29:54] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:29:54] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[1487] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1764 ms. (566 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 567 ms. (1760 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1533] Max Struct:[+inf]
[2026-05-23 18:29:56] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:29:56] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:29:56] [INFO ] [Real]Absence check using 3 positive place invariants in 4 ms returned sat
[2026-05-23 18:29:56] [INFO ] [Real]Absence check using state equation in 44 ms returned sat
[2026-05-23 18:29:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:29:56] [INFO ] [Nat]Absence check using 3 positive place invariants in 3 ms returned sat
[2026-05-23 18:29:56] [INFO ] [Nat]Absence check using state equation in 45 ms returned sat
[2026-05-23 18:29:56] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:29:56] [INFO ] [Nat]Added 26 Read/Feed constraints in 11 ms returned sat
[2026-05-23 18:29:56] [INFO ] Computed and/alt/rep : 61/422/61 causal constraints (skipped 80 transitions) in 10 ms.
[2026-05-23 18:29:56] [INFO ] Added : 26 causal constraints over 6 iterations in 114 ms. Result :sat
Minimization took 57 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1533] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1533] Max Struct:[+inf]
Support contains 1 out of 50 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 192/192 transitions.
Applied a total of 0 rules in 4 ms. Remains 50 /50 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 50/50 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 192/192 transitions.
Applied a total of 0 rules in 4 ms. Remains 50 /50 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-23 18:29:59] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:29:59] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:29:59] [INFO ] Implicit Places using invariants in 112 ms returned []
[2026-05-23 18:29:59] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:29:59] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:29:59] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:30:00] [INFO ] Implicit Places using invariants and state equation in 209 ms returned []
Implicit Place search using SMT with State Equation took 336 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-23 18:30:00] [INFO ] Redundant transitions in 0 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-23 18:30:00] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:30:00] [INFO ] Invariant cache hit.
[2026-05-23 18:30:00] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/50 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/50 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 143/193 variables, 50/53 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/193 variables, 26/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/193 variables, 0/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (OVERLAPS) 0/193 variables, 0/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 193/193 variables, and 79 constraints, problems are : Problem set: 0 solved, 190 unsolved in 3721 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/50 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/50 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 143/193 variables, 50/53 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/193 variables, 26/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/193 variables, 190/269 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/193 variables, 0/269 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (OVERLAPS) 0/193 variables, 0/269 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 269 constraints, problems are : Problem set: 0 solved, 190 unsolved in 30014 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 33798ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 33803ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 34156 ms. Remains : 50/50 places, 192/192 transitions.
[2026-05-23 18:30:33] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {11=1, 24=1, 94=1, 95=1, 141=2}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {11=1, 24=1, 88=1, 89=1, 136=2}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 23 ms. (steps per millisecond=434 ) properties (out of 1) seen :[13]
Current structural bounds on expressions (after cover walk) : Max Seen:[1533] Max Struct:[+inf]
[2026-05-23 18:30:33] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:30:33] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[1533] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 2105 ms. (474 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 657 ms. (1519 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1746] Max Struct:[+inf]
[2026-05-23 18:30:36] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:30:36] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:30:36] [INFO ] [Real]Absence check using 3 positive place invariants in 6 ms returned sat
[2026-05-23 18:30:36] [INFO ] [Real]Absence check using state equation in 46 ms returned sat
[2026-05-23 18:30:36] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:30:36] [INFO ] [Real]Added 26 Read/Feed constraints in 13 ms returned sat
[2026-05-23 18:30:36] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:30:36] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-23 18:30:36] [INFO ] [Nat]Absence check using state equation in 48 ms returned sat
[2026-05-23 18:30:36] [INFO ] [Nat]Added 26 Read/Feed constraints in 9 ms returned sat
[2026-05-23 18:30:36] [INFO ] Computed and/alt/rep : 61/422/61 causal constraints (skipped 80 transitions) in 11 ms.
[2026-05-23 18:30:37] [INFO ] Added : 29 causal constraints over 7 iterations in 130 ms. Result :sat
Minimization took 64 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1746] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1746] Max Struct:[+inf]
Support contains 1 out of 50 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 192/192 transitions.
Applied a total of 0 rules in 4 ms. Remains 50 /50 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 50/50 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 192/192 transitions.
Applied a total of 0 rules in 3 ms. Remains 50 /50 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-23 18:30:41] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:30:41] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:30:41] [INFO ] Implicit Places using invariants in 100 ms returned []
[2026-05-23 18:30:41] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:30:41] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:30:41] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:30:41] [INFO ] Implicit Places using invariants and state equation in 149 ms returned []
Implicit Place search using SMT with State Equation took 251 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-23 18:30:41] [INFO ] Redundant transitions in 1 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-23 18:30:41] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:30:41] [INFO ] Invariant cache hit.
[2026-05-23 18:30:41] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/50 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/50 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 143/193 variables, 50/53 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/193 variables, 26/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/193 variables, 0/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (OVERLAPS) 0/193 variables, 0/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 193/193 variables, and 79 constraints, problems are : Problem set: 0 solved, 190 unsolved in 3744 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/50 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/50 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 143/193 variables, 50/53 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/193 variables, 26/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/193 variables, 190/269 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/193 variables, 0/269 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (OVERLAPS) 0/193 variables, 0/269 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 269 constraints, problems are : Problem set: 0 solved, 190 unsolved in 30010 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 33818ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 33820ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 34081 ms. Remains : 50/50 places, 192/192 transitions.
[2026-05-23 18:31:15] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {11=1, 24=1, 94=1, 95=1, 141=2}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {11=1, 24=1, 88=1, 89=1, 136=2}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 23 ms. (steps per millisecond=434 ) properties (out of 1) seen :[10]
Current structural bounds on expressions (after cover walk) : Max Seen:[1746] Max Struct:[+inf]
[2026-05-23 18:31:15] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:31:15] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[1746] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 2062 ms. (484 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 681 ms. (1466 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[1746] Max Struct:[+inf]
[2026-05-23 18:31:18] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:31:18] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:31:18] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-23 18:31:18] [INFO ] [Real]Absence check using state equation in 50 ms returned sat
[2026-05-23 18:31:18] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:31:18] [INFO ] [Real]Added 26 Read/Feed constraints in 13 ms returned sat
[2026-05-23 18:31:18] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:31:18] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-23 18:31:18] [INFO ] [Nat]Absence check using state equation in 47 ms returned sat
[2026-05-23 18:31:18] [INFO ] [Nat]Added 26 Read/Feed constraints in 9 ms returned sat
[2026-05-23 18:31:18] [INFO ] Computed and/alt/rep : 61/422/61 causal constraints (skipped 80 transitions) in 12 ms.
[2026-05-23 18:31:18] [INFO ] Added : 29 causal constraints over 7 iterations in 135 ms. Result :sat
Minimization took 62 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[1746] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1746] Max Struct:[+inf]
Support contains 1 out of 50 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 192/192 transitions.
Applied a total of 0 rules in 9 ms. Remains 50 /50 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 9 ms. Remains : 50/50 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 192/192 transitions.
Applied a total of 0 rules in 3 ms. Remains 50 /50 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-23 18:31:22] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:31:22] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:31:22] [INFO ] Implicit Places using invariants in 168 ms returned []
[2026-05-23 18:31:22] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:31:22] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:31:22] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:31:23] [INFO ] Implicit Places using invariants and state equation in 168 ms returned []
Implicit Place search using SMT with State Equation took 365 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-23 18:31:23] [INFO ] Redundant transitions in 0 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-23 18:31:23] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:31:23] [INFO ] Invariant cache hit.
[2026-05-23 18:31:23] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/50 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/50 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 143/193 variables, 50/53 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/193 variables, 26/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/193 variables, 0/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (OVERLAPS) 0/193 variables, 0/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 193/193 variables, and 79 constraints, problems are : Problem set: 0 solved, 190 unsolved in 3667 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/50 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/50 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 143/193 variables, 50/53 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/193 variables, 26/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/193 variables, 190/269 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/193 variables, 0/269 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (OVERLAPS) 0/193 variables, 0/269 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 269 constraints, problems are : Problem set: 0 solved, 190 unsolved in 30012 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 33738ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 33739ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 34119 ms. Remains : 50/50 places, 192/192 transitions.
[2026-05-23 18:31:56] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {11=1, 24=1, 94=1, 95=1, 141=2}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {11=1, 24=1, 88=1, 89=1, 136=2}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 23 ms. (steps per millisecond=434 ) properties (out of 1) seen :[12]
Current structural bounds on expressions (after cover walk) : Max Seen:[1746] Max Struct:[+inf]
[2026-05-23 18:31:57] [INFO ] Flatten gal took : 12 ms
[2026-05-23 18:31:57] [INFO ] Flatten gal took : 26 ms
[2026-05-23 18:31:57] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality9087142187680784218.gal : 2 ms
[2026-05-23 18:31:57] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality2216732407005171455.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/ReachabilityCardinality9087142187680784218.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality2216732407005171455.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
RANDOM walk for 40000 steps (8 resets) in 145 ms. (273 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40003 steps (8 resets) in 38 ms. (1025 steps per ms) remains 1/1 properties
Loading property file /tmp/ReachabilityCardinality2216732407005171455.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 9
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :9 after 30
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :30 after 64
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :64 after 13129
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :13129 after 853328
Interrupted probabilistic random walk after 1580431 steps, run timeout after 3001 ms. (steps per millisecond=526 ) properties seen :0 out of 1
Probabilistic random walk after 1580431 steps, saw 1165768 distinct states, run finished after 3001 ms. (steps per millisecond=526 ) properties seen :0
[2026-05-23 18:32:00] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:32:00] [INFO ] Invariant cache hit.
[2026-05-23 18:32:00] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 12/13 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/13 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 124/137 variables, 10/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/137 variables, 7/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/137 variables, 0/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 17/154 variables, 2/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/154 variables, 5/25 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/154 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 39/193 variables, 34/59 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/193 variables, 1/60 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/193 variables, 19/79 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/193 variables, 0/79 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 0/193 variables, 0/79 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 193/193 variables, and 79 constraints, problems are : Problem set: 0 solved, 1 unsolved in 121 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/1 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 1 (OVERLAPS) 12/13 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/13 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 124/137 variables, 10/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/137 variables, 7/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/137 variables, 1/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/137 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 17/154 variables, 2/21 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/154 variables, 5/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/154 variables, 0/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 39/193 variables, 34/60 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/193 variables, 1/61 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/193 variables, 19/80 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 18:32:00] [INFO ] Deduced a trap along path composed of 4 places in 27 ms of which 3 ms to minimize.
At refinement iteration 13 (INCLUDED_ONLY) 0/193 variables, 1/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/193 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 0/193 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 81 constraints, problems are : Problem set: 0 solved, 1 unsolved in 205 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 333ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 0 ms.
Support contains 1 out of 50 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 192/192 transitions.
Applied a total of 0 rules in 5 ms. Remains 50 /50 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 50/50 places, 192/192 transitions.
RANDOM walk for 40001 steps (8 resets) in 115 ms. (344 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40002 steps (8 resets) in 37 ms. (1052 steps per ms) remains 1/1 properties
Interrupted probabilistic random walk after 1571757 steps, run timeout after 3001 ms. (steps per millisecond=523 ) properties seen :0 out of 1
Probabilistic random walk after 1571757 steps, saw 1159139 distinct states, run finished after 3001 ms. (steps per millisecond=523 ) properties seen :0
[2026-05-23 18:32:03] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:32:03] [INFO ] Invariant cache hit.
[2026-05-23 18:32:03] [INFO ] State equation strengthened by 26 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) 12/13 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/13 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 124/137 variables, 10/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/137 variables, 7/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/137 variables, 0/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
All remaining problems are real, not stopping.
At refinement iteration 6 (OVERLAPS) 17/154 variables, 2/20 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/154 variables, 5/25 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/154 variables, 0/25 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (OVERLAPS) 39/193 variables, 34/59 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (INCLUDED_ONLY) 0/193 variables, 1/60 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/193 variables, 19/79 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/193 variables, 0/79 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 13 (OVERLAPS) 0/193 variables, 0/79 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Real declared 193/193 variables, and 79 constraints, problems are : Problem set: 0 solved, 1 unsolved in 119 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 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) 12/13 variables, 1/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/13 variables, 0/1 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 3 (OVERLAPS) 124/137 variables, 10/11 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/137 variables, 7/18 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/137 variables, 1/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/137 variables, 0/19 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 7 (OVERLAPS) 17/154 variables, 2/21 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/154 variables, 5/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/154 variables, 0/26 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 10 (OVERLAPS) 39/193 variables, 34/60 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/193 variables, 1/61 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/193 variables, 19/80 constraints. Problems are: Problem set: 0 solved, 1 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 18:32:03] [INFO ] Deduced a trap along path composed of 4 places in 26 ms of which 2 ms to minimize.
At refinement iteration 13 (INCLUDED_ONLY) 0/193 variables, 1/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 14 (INCLUDED_ONLY) 0/193 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
At refinement iteration 15 (OVERLAPS) 0/193 variables, 0/81 constraints. Problems are: Problem set: 0 solved, 1 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 81 constraints, problems are : Problem set: 0 solved, 1 unsolved in 204 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 1/1 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 1/1 constraints]
After SMT, in 330ms problems are : Problem set: 0 solved, 1 unsolved
Parikh walk visited 0 properties in 0 ms.
Support contains 1 out of 50 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 192/192 transitions.
Applied a total of 0 rules in 4 ms. Remains 50 /50 variables (removed 0) and now considering 192/192 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 50/50 places, 192/192 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 192/192 transitions.
Applied a total of 0 rules in 3 ms. Remains 50 /50 variables (removed 0) and now considering 192/192 (removed 0) transitions.
[2026-05-23 18:32:03] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:32:03] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:32:03] [INFO ] Implicit Places using invariants in 74 ms returned []
[2026-05-23 18:32:03] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:32:03] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:32:03] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:32:04] [INFO ] Implicit Places using invariants and state equation in 159 ms returned []
Implicit Place search using SMT with State Equation took 235 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-23 18:32:04] [INFO ] Redundant transitions in 1 ms returned []
Running 190 sub problems to find dead transitions.
[2026-05-23 18:32:04] [INFO ] Flow matrix only has 143 transitions (discarded 49 similar events)
[2026-05-23 18:32:04] [INFO ] Invariant cache hit.
[2026-05-23 18:32:04] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/50 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/50 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 143/193 variables, 50/53 constraints. Problems are: Problem set: 0 solved, 190 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/193 variables, 26/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/193 variables, 0/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 5 (OVERLAPS) 0/193 variables, 0/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Real declared 193/193 variables, and 79 constraints, problems are : Problem set: 0 solved, 190 unsolved in 3349 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 190 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/50 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/50 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 2 (OVERLAPS) 143/193 variables, 50/53 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/193 variables, 26/79 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/193 variables, 190/269 constraints. Problems are: Problem set: 0 solved, 190 unsolved
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :853328 after 7.26614e+06
At refinement iteration 5 (INCLUDED_ONLY) 0/193 variables, 0/269 constraints. Problems are: Problem set: 0 solved, 190 unsolved
At refinement iteration 6 (OVERLAPS) 0/193 variables, 0/269 constraints. Problems are: Problem set: 0 solved, 190 unsolved
No progress, stopping.
After SMT solving in domain Int declared 193/193 variables, and 269 constraints, problems are : Problem set: 0 solved, 190 unsolved in 30017 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 50/50 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 190/190 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 33424ms problems are : Problem set: 0 solved, 190 unsolved
Search for dead transitions found 0 dead transitions in 33425ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 33674 ms. Remains : 50/50 places, 192/192 transitions.
Attempting over-approximation, by ignoring read arcs.
Ensure Unique test removed 49 transitions
Reduce isomorphic transitions removed 49 transitions.
Iterating post reduction 0 with 49 rules applied. Total rules applied 49 place count 50 transition count 143
Performed 11 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 1 with 11 Pre rules applied. Total rules applied 49 place count 50 transition count 132
Deduced a syphon composed of 11 places in 0 ms
Reduce places removed 11 places and 0 transitions.
Iterating global reduction 1 with 22 rules applied. Total rules applied 71 place count 39 transition count 132
Performed 2 Post agglomeration using F-continuation condition.Transition count delta: 2
Deduced a syphon composed of 2 places in 0 ms
Reduce places removed 2 places and 0 transitions.
Iterating global reduction 1 with 4 rules applied. Total rules applied 75 place count 37 transition count 130
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 76 place count 36 transition count 126
Iterating global reduction 1 with 1 rules applied. Total rules applied 77 place count 36 transition count 126
Applied a total of 77 rules in 12 ms. Remains 36 /50 variables (removed 14) and now considering 126/192 (removed 66) transitions.
Running SMT prover for 1 properties.
// Phase 1: matrix 126 rows 36 cols
[2026-05-23 18:32:37] [INFO ] Computed 3 invariants in 2 ms
Starting Z3 with timeout 450.0 s and query timeout 45000.0 ms
[2026-05-23 18:32:37] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-23 18:32:37] [INFO ] After 89ms 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 18:32:37] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-23 18:32:37] [INFO ] After 44ms SMT Verify possible using state equation in natural domain returned unsat :0 sat :1
TRAPS : Iteration 0
[2026-05-23 18:32:37] [INFO ] After 55ms SMT Verify possible using trap constraints in natural domain returned unsat :0 sat :1
[2026-05-23 18:32:37] [INFO ] After 93ms SMT Verify possible using all constraints in natural domain returned unsat :0 sat :1
[2026-05-23 18:32:37] [INFO ] Flatten gal took : 12 ms
[2026-05-23 18:32:37] [INFO ] Flatten gal took : 9 ms
[2026-05-23 18:32:37] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1983652294066917233.gal : 2 ms
[2026-05-23 18:32:37] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality12080083207496391587.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/ReachabilityCardinality1983652294066917233.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality12080083207496391587.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 ...329
Loading property file /tmp/ReachabilityCardinality12080083207496391587.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 175
SDD proceeding with computation,1 properties remain. new max is 32
SDD size :175 after 4653
SDD proceeding with computation,1 properties remain. new max is 64
SDD size :4653 after 191543
SDD proceeding with computation,1 properties remain. new max is 128
SDD size :191543 after 1.30588e+06
SDD proceeding with computation,1 properties remain. new max is 256
SDD size :1.30588e+06 after 6.4495e+06
SDD proceeding with computation,1 properties remain. new max is 512
SDD size :6.4495e+06 after 2.82981e+07
SDD proceeding with computation,1 properties remain. new max is 1024
SDD size :2.82981e+07 after 1.18042e+08
Detected timeout of ITS tools.
[2026-05-23 18:32:47] [INFO ] Flatten gal took : 31 ms
[2026-05-23 18:32:47] [INFO ] Applying decomposition
[2026-05-23 18:32:47] [INFO ] Flatten gal took : 28 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/graph12082192753725981733.txt' '-o' '/tmp/graph12082192753725981733.bin' '-w' '/tmp/graph12082192753725981733.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph12082192753725981733.bin' '-l' '-1' '-v' '-w' '/tmp/graph12082192753725981733.weights' '-q' '0' '-e' '0.001'
[2026-05-23 18:32:47] [INFO ] Decomposing Gal with order
[2026-05-23 18:32:47] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-23 18:32:47] [INFO ] Removed a total of 396 redundant transitions.
[2026-05-23 18:32:47] [INFO ] Flatten gal took : 41 ms
[2026-05-23 18:32:47] [INFO ] Fuse similar labels procedure discarded/fused a total of 14 labels/synchronizations in 21 ms.
[2026-05-23 18:32:47] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality14086845787486096958.gal : 2 ms
[2026-05-23 18:32:47] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality15201526965563784202.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/ReachabilityCardinality14086845787486096958.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality15201526965563784202.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/ReachabilityCardinality15201526965563784202.prop.
Detected timeout of ITS tools.
[2026-05-23 18:32:52] [INFO ] Flatten gal took : 7 ms
[2026-05-23 18:32:52] [INFO ] Applying decomposition
[2026-05-23 18:32:52] [INFO ] Flatten gal took : 6 ms
Converted graph to binary with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/convert-linux64' '-i' '/tmp/graph10841596657278805483.txt' '-o' '/tmp/graph10841596657278805483.bin' '-w' '/tmp/graph10841596657278805483.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph10841596657278805483.bin' '-l' '-1' '-v' '-w' '/tmp/graph10841596657278805483.weights' '-q' '0' '-e' '0.001'
[2026-05-23 18:32:52] [INFO ] Decomposing Gal with order
[2026-05-23 18:32:52] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-23 18:32:52] [INFO ] Removed a total of 249 redundant transitions.
[2026-05-23 18:32:52] [INFO ] Flatten gal took : 45 ms
[2026-05-23 18:32:52] [INFO ] Fuse similar labels procedure discarded/fused a total of 9 labels/synchronizations in 15 ms.
[2026-05-23 18:32:52] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality8959898128055371790.gal : 1 ms
[2026-05-23 18:32:52] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality11425954968714171261.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/ReachabilityCardinality8959898128055371790.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality11425954968714171261.prop' '--nowitness'
its-reach command run as :
/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.itstools.binaries_1.0.0.202505121319/bin/its-reach-linux64 --gc-threshold 2000000 --quiet ...308
Loading property file /tmp/ReachabilityCardinality11425954968714171261.prop.
SDD proceeding with computation,1 properties remain. new max is 4
SDD size :1 after 5
SDD proceeding with computation,1 properties remain. new max is 8
SDD size :5 after 10
SDD proceeding with computation,1 properties remain. new max is 16
SDD size :10 after 63
Detected timeout of ITS tools.
Over-approximation ignoring read arcs solved 0 properties in 30414 ms.
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[1746] Max Struct:[+inf]
Ending property specific reduction for DoubleLock-PT-p2s1-UpperBounds-12 in 312312 ms.
Starting property specific reduction for DoubleLock-PT-p2s1-UpperBounds-13
Current structural bounds on expressions (Initially) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Adding known information on max bounds.) : Max Seen:[0] Max Struct:[+inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[0] Max Struct:[+inf]
[2026-05-23 18:33:07] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
// Phase 1: matrix 145 rows 50 cols
[2026-05-23 18:33:07] [INFO ] Computed 2 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[+inf]
RANDOM walk for 10000 steps (27 resets) in 16 ms. (588 steps per ms)
BEST_FIRST walk for 10001 steps (2 resets) in 7 ms. (1250 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[9] Max Struct:[+inf]
[2026-05-23 18:33:07] [INFO ] Flow matrix only has 145 transitions (discarded 49 similar events)
[2026-05-23 18:33:07] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 18:33:07] [INFO ] [Real]Absence check using 1 positive place invariants in 2 ms returned sat
[2026-05-23 18:33:07] [INFO ] [Real]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:33:08] [INFO ] [Real]Absence check using state equation in 44 ms returned sat
[2026-05-23 18:33:08] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 18:33:08] [INFO ] [Nat]Absence check using 1 positive place invariants in 1 ms returned sat
[2026-05-23 18:33:08] [INFO ] [Nat]Absence check using 1 positive and 1 generalized place invariants in 1 ms returned sat
[2026-05-23 18:33:08] [INFO ] [Nat]Absence check using state equation in 41 ms returned sat
[2026-05-23 18:33:08] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:33:08] [INFO ] [Nat]Added 26 Read/Feed constraints in 9 ms returned sat
[2026-05-23 18:33:08] [INFO ] Computed and/alt/rep : 62/426/62 causal constraints (skipped 81 transitions) in 10 ms.
[2026-05-23 18:33:08] [INFO ] Added : 28 causal constraints over 6 iterations in 100 ms. Result :sat
Minimization took 94 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[9] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[9] Max Struct:[+inf]
Support contains 1 out of 50 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 50/50 places, 194/194 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 50 transition count 192
Discarding 1 places :
Symmetric choice reduction at 1 with 1 rule applications. Total rules 3 place count 49 transition count 188
Iterating global reduction 1 with 1 rules applied. Total rules applied 4 place count 49 transition count 188
Applied a total of 4 rules in 5 ms. Remains 49 /50 variables (removed 1) and now considering 188/194 (removed 6) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 49/50 places, 188/194 transitions.
[2026-05-23 18:33:08] [INFO ] Flow matrix only has 139 transitions (discarded 49 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {11=1, 23=1, 84=1, 85=1, 132=2}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {11=1, 23=1, 87=1, 88=1, 134=2}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 21 ms. (steps per millisecond=476 ) properties (out of 1) seen :[6]
Current structural bounds on expressions (after cover walk) : Max Seen:[9] Max Struct:[+inf]
[2026-05-23 18:33:08] [INFO ] Flow matrix only has 139 transitions (discarded 49 similar events)
// Phase 1: matrix 139 rows 49 cols
[2026-05-23 18:33:08] [INFO ] Computed 3 invariants in 2 ms
Current structural bounds on expressions (after invariants) : Max Seen:[9] Max Struct:[+inf]
RANDOM walk for 1000001 steps (2 resets) in 1747 ms. (572 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 509 ms. (1960 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[12] Max Struct:[+inf]
[2026-05-23 18:33:10] [INFO ] Flow matrix only has 139 transitions (discarded 49 similar events)
[2026-05-23 18:33:10] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:33:10] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-23 18:33:10] [INFO ] [Real]Absence check using state equation in 41 ms returned sat
[2026-05-23 18:33:10] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:33:10] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-23 18:33:10] [INFO ] [Nat]Absence check using state equation in 45 ms returned sat
[2026-05-23 18:33:10] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:33:10] [INFO ] [Nat]Added 26 Read/Feed constraints in 11 ms returned sat
[2026-05-23 18:33:10] [INFO ] Computed and/alt/rep : 59/378/59 causal constraints (skipped 78 transitions) in 13 ms.
[2026-05-23 18:33:10] [INFO ] Added : 15 causal constraints over 3 iterations in 70 ms. Result :sat
Minimization took 52 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[12] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[12] Max Struct:[+inf]
Support contains 1 out of 49 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 49/49 places, 188/188 transitions.
Applied a total of 0 rules in 3 ms. Remains 49 /49 variables (removed 0) and now considering 188/188 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 49/49 places, 188/188 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 49/49 places, 188/188 transitions.
Applied a total of 0 rules in 3 ms. Remains 49 /49 variables (removed 0) and now considering 188/188 (removed 0) transitions.
[2026-05-23 18:33:11] [INFO ] Flow matrix only has 139 transitions (discarded 49 similar events)
[2026-05-23 18:33:11] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:33:11] [INFO ] Implicit Places using invariants in 89 ms returned []
[2026-05-23 18:33:11] [INFO ] Flow matrix only has 139 transitions (discarded 49 similar events)
[2026-05-23 18:33:11] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:33:11] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:33:11] [INFO ] Implicit Places using invariants and state equation in 177 ms returned []
Implicit Place search using SMT with State Equation took 267 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-23 18:33:11] [INFO ] Redundant transitions in 1 ms returned []
Running 186 sub problems to find dead transitions.
[2026-05-23 18:33:11] [INFO ] Flow matrix only has 139 transitions (discarded 49 similar events)
[2026-05-23 18:33:11] [INFO ] Invariant cache hit.
[2026-05-23 18:33:11] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/49 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/49 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 2 (OVERLAPS) 139/188 variables, 49/52 constraints. Problems are: Problem set: 0 solved, 186 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/188 variables, 26/78 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/188 variables, 0/78 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 5 (OVERLAPS) 0/188 variables, 0/78 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Real declared 188/188 variables, and 78 constraints, problems are : Problem set: 0 solved, 186 unsolved in 3348 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 49/49 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 186/186 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 186 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/49 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/49 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 2 (OVERLAPS) 139/188 variables, 49/52 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/188 variables, 26/78 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/188 variables, 186/264 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/188 variables, 0/264 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 6 (OVERLAPS) 0/188 variables, 0/264 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Int declared 188/188 variables, and 264 constraints, problems are : Problem set: 0 solved, 186 unsolved in 8497 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 49/49 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 186/186 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 11888ms problems are : Problem set: 0 solved, 186 unsolved
Search for dead transitions found 0 dead transitions in 11889ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 12165 ms. Remains : 49/49 places, 188/188 transitions.
[2026-05-23 18:33:23] [INFO ] Flow matrix only has 139 transitions (discarded 49 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {11=1, 23=1, 84=1, 85=1, 132=2}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {11=1, 23=1, 87=1, 88=1, 134=2}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 24 ms. (steps per millisecond=416 ) properties (out of 1) seen :[5]
Current structural bounds on expressions (after cover walk) : Max Seen:[12] Max Struct:[+inf]
[2026-05-23 18:33:23] [INFO ] Flow matrix only has 139 transitions (discarded 49 similar events)
[2026-05-23 18:33:23] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[12] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 2035 ms. (491 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 592 ms. (1686 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[15] Max Struct:[+inf]
[2026-05-23 18:33:25] [INFO ] Flow matrix only has 139 transitions (discarded 49 similar events)
[2026-05-23 18:33:25] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:33:26] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-23 18:33:26] [INFO ] [Real]Absence check using state equation in 47 ms returned sat
[2026-05-23 18:33:26] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:33:26] [INFO ] [Real]Added 26 Read/Feed constraints in 9 ms returned sat
[2026-05-23 18:33:26] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:33:26] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-23 18:33:26] [INFO ] [Nat]Absence check using state equation in 44 ms returned sat
[2026-05-23 18:33:26] [INFO ] [Nat]Added 26 Read/Feed constraints in 12 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 18:33:26] [INFO ] Deduced a trap composed of 11 places in 77 ms of which 6 ms to minimize.
[2026-05-23 18:33:26] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 90 ms
[2026-05-23 18:33:26] [INFO ] Computed and/alt/rep : 59/378/59 causal constraints (skipped 78 transitions) in 12 ms.
[2026-05-23 18:33:26] [INFO ] Added : 16 causal constraints over 4 iterations in 79 ms. Result :sat
Minimization took 43 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[15] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[15] Max Struct:[+inf]
Support contains 1 out of 49 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 49/49 places, 188/188 transitions.
Applied a total of 0 rules in 3 ms. Remains 49 /49 variables (removed 0) and now considering 188/188 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 3 ms. Remains : 49/49 places, 188/188 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 49/49 places, 188/188 transitions.
Applied a total of 0 rules in 2 ms. Remains 49 /49 variables (removed 0) and now considering 188/188 (removed 0) transitions.
[2026-05-23 18:33:26] [INFO ] Flow matrix only has 139 transitions (discarded 49 similar events)
[2026-05-23 18:33:26] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:33:26] [INFO ] Implicit Places using invariants in 64 ms returned []
[2026-05-23 18:33:26] [INFO ] Flow matrix only has 139 transitions (discarded 49 similar events)
[2026-05-23 18:33:26] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:33:26] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:33:26] [INFO ] Implicit Places using invariants and state equation in 166 ms returned []
Implicit Place search using SMT with State Equation took 232 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-23 18:33:26] [INFO ] Redundant transitions in 1 ms returned []
Running 186 sub problems to find dead transitions.
[2026-05-23 18:33:26] [INFO ] Flow matrix only has 139 transitions (discarded 49 similar events)
[2026-05-23 18:33:26] [INFO ] Invariant cache hit.
[2026-05-23 18:33:26] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/49 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/49 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 2 (OVERLAPS) 139/188 variables, 49/52 constraints. Problems are: Problem set: 0 solved, 186 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/188 variables, 26/78 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/188 variables, 0/78 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 5 (OVERLAPS) 0/188 variables, 0/78 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Real declared 188/188 variables, and 78 constraints, problems are : Problem set: 0 solved, 186 unsolved in 2995 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 49/49 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 186/186 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 186 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/49 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/49 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 2 (OVERLAPS) 139/188 variables, 49/52 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/188 variables, 26/78 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/188 variables, 186/264 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/188 variables, 0/264 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 6 (OVERLAPS) 0/188 variables, 0/264 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Int declared 188/188 variables, and 264 constraints, problems are : Problem set: 0 solved, 186 unsolved in 8839 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 49/49 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 186/186 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 11886ms problems are : Problem set: 0 solved, 186 unsolved
Search for dead transitions found 0 dead transitions in 11887ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 12129 ms. Remains : 49/49 places, 188/188 transitions.
[2026-05-23 18:33:38] [INFO ] Flow matrix only has 139 transitions (discarded 49 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {11=1, 23=1, 84=1, 85=1, 132=2}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 1 ms.
This minimized invariant on transitions {11=1, 23=1, 87=1, 88=1, 134=2}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 26 ms. (steps per millisecond=384 ) properties (out of 1) seen :[5]
Current structural bounds on expressions (after cover walk) : Max Seen:[15] Max Struct:[+inf]
[2026-05-23 18:33:38] [INFO ] Flow matrix only has 139 transitions (discarded 49 similar events)
[2026-05-23 18:33:38] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[15] Max Struct:[+inf]
RANDOM walk for 1000000 steps (2 resets) in 1892 ms. (528 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 508 ms. (1964 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[15] Max Struct:[+inf]
[2026-05-23 18:33:41] [INFO ] Flow matrix only has 139 transitions (discarded 49 similar events)
[2026-05-23 18:33:41] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:33:41] [INFO ] [Real]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-23 18:33:41] [INFO ] [Real]Absence check using state equation in 45 ms returned sat
[2026-05-23 18:33:41] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:33:41] [INFO ] [Real]Added 26 Read/Feed constraints in 11 ms returned sat
[2026-05-23 18:33:41] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 18:33:41] [INFO ] [Nat]Absence check using 3 positive place invariants in 2 ms returned sat
[2026-05-23 18:33:41] [INFO ] [Nat]Absence check using state equation in 42 ms returned sat
[2026-05-23 18:33:41] [INFO ] [Nat]Added 26 Read/Feed constraints in 10 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 18:33:41] [INFO ] Deduced a trap composed of 11 places in 73 ms of which 7 ms to minimize.
[2026-05-23 18:33:41] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 91 ms
[2026-05-23 18:33:41] [INFO ] Computed and/alt/rep : 59/378/59 causal constraints (skipped 78 transitions) in 12 ms.
[2026-05-23 18:33:41] [INFO ] Added : 16 causal constraints over 4 iterations in 86 ms. Result :sat
Minimization took 52 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[15] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[15] Max Struct:[+inf]
Support contains 1 out of 49 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 49/49 places, 188/188 transitions.
Applied a total of 0 rules in 4 ms. Remains 49 /49 variables (removed 0) and now considering 188/188 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 4 ms. Remains : 49/49 places, 188/188 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 49/49 places, 188/188 transitions.
Applied a total of 0 rules in 2 ms. Remains 49 /49 variables (removed 0) and now considering 188/188 (removed 0) transitions.
[2026-05-23 18:33:41] [INFO ] Flow matrix only has 139 transitions (discarded 49 similar events)
[2026-05-23 18:33:41] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:33:41] [INFO ] Implicit Places using invariants in 80 ms returned []
[2026-05-23 18:33:41] [INFO ] Flow matrix only has 139 transitions (discarded 49 similar events)
[2026-05-23 18:33:41] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 18:33:41] [INFO ] State equation strengthened by 26 read => feed constraints.
[2026-05-23 18:33:41] [INFO ] Implicit Places using invariants and state equation in 183 ms returned []
Implicit Place search using SMT with State Equation took 265 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-23 18:33:41] [INFO ] Redundant transitions in 1 ms returned []
Running 186 sub problems to find dead transitions.
[2026-05-23 18:33:41] [INFO ] Flow matrix only has 139 transitions (discarded 49 similar events)
[2026-05-23 18:33:41] [INFO ] Invariant cache hit.
[2026-05-23 18:33:41] [INFO ] State equation strengthened by 26 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/49 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/49 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 2 (OVERLAPS) 139/188 variables, 49/52 constraints. Problems are: Problem set: 0 solved, 186 unsolved
All remaining problems are real, not stopping.
At refinement iteration 3 (INCLUDED_ONLY) 0/188 variables, 26/78 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/188 variables, 0/78 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 5 (OVERLAPS) 0/188 variables, 0/78 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Real declared 188/188 variables, and 78 constraints, problems are : Problem set: 0 solved, 186 unsolved in 2797 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 49/49 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 186/186 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 186 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/49 variables, 3/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/49 variables, 0/3 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 2 (OVERLAPS) 139/188 variables, 49/52 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/188 variables, 26/78 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/188 variables, 186/264 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/188 variables, 0/264 constraints. Problems are: Problem set: 0 solved, 186 unsolved
At refinement iteration 6 (OVERLAPS) 0/188 variables, 0/264 constraints. Problems are: Problem set: 0 solved, 186 unsolved
No progress, stopping.
After SMT solving in domain Int declared 188/188 variables, and 264 constraints, problems are : Problem set: 0 solved, 186 unsolved in 8444 ms.
Refiners :[Positive P Invariants (semi-flows): 3/3 constraints, State Equation: 49/49 constraints, ReadFeed: 26/26 constraints, PredecessorRefiner: 186/186 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 11291ms problems are : Problem set: 0 solved, 186 unsolved
Search for dead transitions found 0 dead transitions in 11293ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 11567 ms. Remains : 49/49 places, 188/188 transitions.
[2026-05-23 18:33:53] [INFO ] Flow matrix only has 139 transitions (discarded 49 similar events)
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
Found an invariant !
This invariant on transitions {11=1, 23=1, 84=1, 85=1, 132=2}
Produces a positive solution :{}
Attempting to minimize the solution found.
Minimization OK=successtook 0 ms.
This minimized invariant on transitions {11=1, 23=1, 87=1, 88=1, 134=2}
Produces a positive solution
Incomplete random walk after 10000 steps, including 2 resets, run finished after 27 ms. (steps per millisecond=370 ) properties (out of 1) seen :[6]
Current structural bounds on expressions (after cover walk) : Max Seen:[15] Max Struct:[+inf]
[2026-05-23 18:33:53] [INFO ] Flatten gal took : 10 ms
[2026-05-23 18:33:53] [INFO ] Flatten gal took : 13 ms
[2026-05-23 18:33:53] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality2839406172059524618.gal : 2 ms
[2026-05-23 18:33:53] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality10973540034517719633.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/ReachabilityCardinality2839406172059524618.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality10973540034517719633.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 ...329
RANDOM walk for 40001 steps (8 resets) in 129 ms. (307 steps per ms) remains 1/1 properties
BEST_FIRST walk for 39656 steps (8 resets) in 35 ms. (1101 steps per ms) remains 0/1 properties
ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
Current structural bounds on expressions (After reachability solving 0 queries.) : Max Seen:[15] Max Struct:[+inf]
Ending property specific reduction for DoubleLock-PT-p2s1-UpperBounds-13 in 45372 ms.
[2026-05-23 18:33:53] [INFO ] Flatten gal took : 8 ms
[2026-05-23 18:33:53] [INFO ] Applying decomposition
[2026-05-23 18:33:53] [INFO ] Flatten gal took : 8 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/graph1068668361688155050.txt' '-o' '/tmp/graph1068668361688155050.bin' '-w' '/tmp/graph1068668361688155050.weights'
Built communities with : '/home/mcc/BenchKit/itstools/itstools/plugins/fr.lip6.move.gal.louvain.binaries_1.0.0.202505121319/bin/louvain-linux64' '/tmp/graph1068668361688155050.bin' '-l' '-1' '-v' '-w' '/tmp/graph1068668361688155050.weights' '-q' '0' '-e' '0.001'
[2026-05-23 18:33:53] [INFO ] Decomposing Gal with order
[2026-05-23 18:33:53] [INFO ] Rewriting arrays to variables to allow decomposition.
[2026-05-23 18:33:53] [INFO ] Removed a total of 399 redundant transitions.
[2026-05-23 18:33:53] [INFO ] Flatten gal took : 18 ms
[2026-05-23 18:33:53] [INFO ] Fuse similar labels procedure discarded/fused a total of 14 labels/synchronizations in 3 ms.
[2026-05-23 18:33:53] [INFO ] Time to serialize gal into /tmp/UpperBounds6263535319600747568.gal : 2 ms
[2026-05-23 18:33:53] [INFO ] Time to serialize properties into /tmp/UpperBounds11531501964185337228.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/UpperBounds6263535319600747568.gal' '-t' 'CGAL' '-reachable-file' '/tmp/UpperBounds11531501964185337228.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 ...284
Loading property file /tmp/UpperBounds11531501964185337228.prop.
Detected timeout of ITS tools.
[2026-05-23 18:57:17] [INFO ] Flatten gal took : 7 ms
[2026-05-23 18:57:17] [INFO ] Time to serialize gal into /tmp/UpperBounds13965587393624704212.gal : 3 ms
[2026-05-23 18:57:17] [INFO ] Time to serialize properties into /tmp/UpperBounds17194435375036374955.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/UpperBounds13965587393624704212.gal' '-t' 'CGAL' '-reachable-file' '/tmp/UpperBounds17194435375036374955.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 ...306
Loading property file /tmp/UpperBounds17194435375036374955.prop.
Detected timeout of ITS tools.
[2026-05-23 19:20:40] [INFO ] Flatten gal took : 8 ms
[2026-05-23 19:20:40] [INFO ] Input system was already deterministic with 194 transitions.
[2026-05-23 19:20:40] [INFO ] Transformed 50 places.
[2026-05-23 19:20:40] [INFO ] Transformed 194 transitions.
Running greatSPN : cd /home/mcc/execution;'/home/mcc/BenchKit/bin//../itstools/bin//..//greatspn//bin/pinvar' '/home/mcc/execution/gspn'
Run of greatSPN captured in /home/mcc/execution/outPut.txt
Running greatSPN : cd /home/mcc/execution;'/home/mcc/BenchKit/bin//../itstools/bin//..//greatspn//bin/RGMEDD2' '/home/mcc/execution/gspn' '-META' '-varord-only'
Run of greatSPN captured in /home/mcc/execution/outPut.txt
Using order generated by GreatSPN with heuristic : META
[2026-05-23 19:20:41] [INFO ] Time to serialize gal into /tmp/UpperBounds341161679779923908.gal : 2 ms
[2026-05-23 19:20:41] [INFO ] Time to serialize properties into /tmp/UpperBounds549514633067596735.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/UpperBounds341161679779923908.gal' '-t' 'CGAL' '-reachable-file' '/tmp/UpperBounds549514633067596735.prop' '--nowitness' '--load-order' '/home/mcc/execution/model.ord' '--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 ...347
Successfully loaded order from file /home/mcc/execution/model.ord
Loading property file /tmp/UpperBounds549514633067596735.prop.
BK_TIME_CONFINEMENT_REACHED
--------------------
content from stderr:
+ export BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
+ BINDIR=/home/mcc/BenchKit/bin//../itstools/bin//../
++ pwd
+ export MODEL=/home/mcc/execution
+ MODEL=/home/mcc/execution
+ [[ UpperBounds = StateSpace ]]
+ /home/mcc/BenchKit/bin//../itstools/bin//..//runeclipse.sh /home/mcc/execution UpperBounds -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
+ ulimit -s 65536
+ [[ -z '' ]]
+ export LTSMIN_MEM_SIZE=8589934592
+ LTSMIN_MEM_SIZE=8589934592
++ 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 UpperBounds -its -ltsmin -greatspnpath /home/mcc/BenchKit/bin//../itstools/bin//..//greatspn/ -order META -manyOrder -smt -timeout 3600
Sequence of Actions to be Executed by the VM
This is useful if one wants to reexecute the tool in the VM from the submitted image disk.
set -x
# this is for BenchKit: configuration of major elements for the test
export BK_INPUT="DoubleLock-PT-p2s1"
export BK_EXAMINATION="UpperBounds"
export BK_TOOL="gold2025"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"
export BK_BIN_PATH="/home/mcc/BenchKit/bin/"
# this is specific to your benchmark or test
export BIN_DIR="$HOME/BenchKit/bin"
# remove the execution directoty if it exists (to avoid increse of .vmdk images)
if [ -d execution ] ; then
rm -rf execution
fi
# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-5973"
echo " Executing tool gold2025"
echo " Input is DoubleLock-PT-p2s1, examination is UpperBounds"
echo " Time confinement is $BK_TIME_CONFINEMENT seconds"
echo " Memory confinement is 16384 MBytes"
echo " Number of cores is 4"
echo " Run identifier is r127-smll-177955743800004"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"
tar xzf /home/mcc/BenchKit/INPUTS/DoubleLock-PT-p2s1.tgz
mv DoubleLock-PT-p2s1 execution
cd execution
if [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "UpperBounds" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] || [ "UpperBounds" = "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 [ "UpperBounds" = "UpperBounds" ] ; then
echo "The expected result is a vector of positive values"
echo NUM_VECTOR
elif [ "UpperBounds" != "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 "UpperBounds.xml" ] ; then # for cunf (txt files deleted;-)
echo echo "here is the order used to build the result vector(from xml file)"
for x in $(grep '
echo "FORMULA_NAME $x"
done
elif [ "UpperBounds" = "ReachabilityDeadlock" ] || [ "UpperBounds" = "QuasiLiveness" ] || [ "UpperBounds" = "StableMarking" ] || [ "UpperBounds" = "Liveness" ] || [ "UpperBounds" = "OneSafe" ] ; then
echo "FORMULA_NAME UpperBounds"
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 ;