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-177955743800031.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 EisenbergMcGuire-PT-04, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r127-smll-177955743800031
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 664K
-rw-r--r-- 1 mcc users 8.5K Mar 7 05:23 CTLCardinality.txt
-rw-r--r-- 1 mcc users 88K Mar 7 05:23 CTLCardinality.xml
-rw-r--r-- 1 mcc users 5.5K Mar 7 05:23 CTLFireability.txt
-rw-r--r-- 1 mcc users 37K Mar 7 05:23 CTLFireability.xml
-rw-r--r-- 1 mcc users 3.9K Mar 15 09:47 LTLCardinality.txt
-rw-r--r-- 1 mcc users 27K Mar 15 09:47 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.9K Mar 15 09:47 LTLFireability.txt
-rw-r--r-- 1 mcc users 19K Mar 15 09:47 LTLFireability.xml
-rw-r--r-- 1 mcc users 8.7K Mar 7 05:23 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 80K Mar 7 05:23 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 12K Mar 7 05:23 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 79K Mar 7 05:23 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K Mar 15 09:47 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K Mar 15 09:47 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 equiv_col
-rw-r--r-- 1 mcc users 3 Mar 3 18:30 instance
-rw-r--r-- 1 mcc users 6 Mar 3 18:30 iscolored
-rw-r--r-- 1 mcc users 255K 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 EisenbergMcGuire-PT-04-UpperBounds-00
FORMULA_NAME EisenbergMcGuire-PT-04-UpperBounds-01
FORMULA_NAME EisenbergMcGuire-PT-04-UpperBounds-02
FORMULA_NAME EisenbergMcGuire-PT-04-UpperBounds-03
FORMULA_NAME EisenbergMcGuire-PT-04-UpperBounds-04
FORMULA_NAME EisenbergMcGuire-PT-04-UpperBounds-05
FORMULA_NAME EisenbergMcGuire-PT-04-UpperBounds-06
FORMULA_NAME EisenbergMcGuire-PT-04-UpperBounds-07
FORMULA_NAME EisenbergMcGuire-PT-04-UpperBounds-08
FORMULA_NAME EisenbergMcGuire-PT-04-UpperBounds-09
FORMULA_NAME EisenbergMcGuire-PT-04-UpperBounds-10
FORMULA_NAME EisenbergMcGuire-PT-04-UpperBounds-11
FORMULA_NAME EisenbergMcGuire-PT-04-UpperBounds-12
FORMULA_NAME EisenbergMcGuire-PT-04-UpperBounds-13
FORMULA_NAME EisenbergMcGuire-PT-04-UpperBounds-14
FORMULA_NAME EisenbergMcGuire-PT-04-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1779568464909

Invoking MCC driver with
GOLD_TOOL=
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=EisenbergMcGuire-PT-04
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
UpperBounds PT
Running Version 202505121319
[2026-05-23 20:34:27] [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 20:34:27] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2026-05-23 20:34:27] [INFO ] Load time of PNML (sax parser for PT used): 165 ms
[2026-05-23 20:34:27] [INFO ] Transformed 196 places.
[2026-05-23 20:34:27] [INFO ] Transformed 448 transitions.
[2026-05-23 20:34:27] [INFO ] Found NUPN structural information;
[2026-05-23 20:34:27] [INFO ] Parsed PT model containing 196 places and 448 transitions and 1952 arcs in 362 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 11 ms.
Current structural bounds on expressions (Initiallly, because the net is safe) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
Current structural bounds on expressions (Before main loop) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2026-05-23 20:34:27] [INFO ] Flow matrix only has 284 transitions (discarded 164 similar events)
// Phase 1: matrix 284 rows 196 cols
[2026-05-23 20:34:27] [INFO ] Computed 13 invariants in 19 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0] Max Struct:[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
RANDOM walk for 10000 steps (2 resets) in 66 ms. (149 steps per ms)
FORMULA EisenbergMcGuire-PT-04-UpperBounds-15 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA EisenbergMcGuire-PT-04-UpperBounds-14 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA EisenbergMcGuire-PT-04-UpperBounds-13 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA EisenbergMcGuire-PT-04-UpperBounds-12 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA EisenbergMcGuire-PT-04-UpperBounds-11 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA EisenbergMcGuire-PT-04-UpperBounds-09 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA EisenbergMcGuire-PT-04-UpperBounds-08 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA EisenbergMcGuire-PT-04-UpperBounds-07 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA EisenbergMcGuire-PT-04-UpperBounds-06 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA EisenbergMcGuire-PT-04-UpperBounds-02 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA EisenbergMcGuire-PT-04-UpperBounds-01 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
FORMULA EisenbergMcGuire-PT-04-UpperBounds-00 1 TECHNIQUES TOPOLOGICAL BESTFIRST_WALK
BEST_FIRST walk for 40004 steps (8 resets) in 72 ms. (548 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[0, 0, 0, 0] Max Struct:[1, 1, 1, 1]
[2026-05-23 20:34:28] [INFO ] Flow matrix only has 284 transitions (discarded 164 similar events)
[2026-05-23 20:34:28] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 20:34:28] [INFO ] [Real]Absence check using 9 positive place invariants in 16 ms returned sat
[2026-05-23 20:34:28] [INFO ] [Real]Absence check using 9 positive and 4 generalized place invariants in 3 ms returned sat
[2026-05-23 20:34:28] [INFO ] [Real]Absence check using state equation in 223 ms returned sat
[2026-05-23 20:34:28] [INFO ] State equation strengthened by 112 read => feed constraints.
[2026-05-23 20:34:28] [INFO ] [Real]Added 112 Read/Feed constraints in 55 ms returned sat
[2026-05-23 20:34:28] [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 20:34:28] [INFO ] [Nat]Absence check using 9 positive place invariants in 12 ms returned sat
[2026-05-23 20:34:28] [INFO ] [Nat]Absence check using 9 positive and 4 generalized place invariants in 4 ms returned sat
[2026-05-23 20:34:29] [INFO ] [Nat]Absence check using state equation in 151 ms returned sat
[2026-05-23 20:34:29] [INFO ] [Nat]Added 112 Read/Feed constraints in 28 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:30] [INFO ] Deduced a trap composed of 3 places in 1346 ms of which 1208 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:30] [INFO ] Deduced a trap composed of 32 places in 105 ms of which 7 ms to minimize.
[2026-05-23 20:34:30] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 1542 ms
[2026-05-23 20:34:30] [INFO ] Computed and/alt/rep : 296/974/260 causal constraints (skipped 20 transitions) in 42 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:32] [INFO ] Deduced a trap composed of 26 places in 177 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:32] [INFO ] Deduced a trap composed of 3 places in 193 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:33] [INFO ] Deduced a trap composed of 20 places in 182 ms of which 27 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:33] [INFO ] Deduced a trap composed of 23 places in 146 ms of which 17 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:33] [INFO ] Deduced a trap composed of 46 places in 156 ms of which 20 ms to minimize.
[2026-05-23 20:34:33] [INFO ] Trap strengthening (SAT) tested/added 6/5 trap constraints in 1134 ms
[2026-05-23 20:34:33] [INFO ] Added : 220 causal constraints over 45 iterations in 3091 ms. Result :sat
Minimization took 41 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 20:34:33] [INFO ] [Real]Absence check using 9 positive place invariants in 10 ms returned sat
[2026-05-23 20:34:33] [INFO ] [Real]Absence check using 9 positive and 4 generalized place invariants in 3 ms returned sat
[2026-05-23 20:34:34] [INFO ] [Real]Absence check using state equation in 137 ms returned sat
[2026-05-23 20:34:34] [INFO ] [Real]Added 112 Read/Feed constraints in 38 ms returned sat
[2026-05-23 20:34:34] [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 20:34:34] [INFO ] [Nat]Absence check using 9 positive place invariants in 11 ms returned sat
[2026-05-23 20:34:34] [INFO ] [Nat]Absence check using 9 positive and 4 generalized place invariants in 3 ms returned sat
[2026-05-23 20:34:34] [INFO ] [Nat]Absence check using state equation in 131 ms returned sat
[2026-05-23 20:34:34] [INFO ] [Nat]Added 112 Read/Feed constraints in 47 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:34] [INFO ] Deduced a trap composed of 3 places in 84 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:34] [INFO ] Deduced a trap composed of 3 places in 104 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:34] [INFO ] Deduced a trap composed of 20 places in 113 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:34] [INFO ] Deduced a trap composed of 3 places in 113 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:34] [INFO ] Deduced a trap composed of 26 places in 84 ms of which 5 ms to minimize.
[2026-05-23 20:34:34] [INFO ] Trap strengthening (SAT) tested/added 6/5 trap constraints in 626 ms
[2026-05-23 20:34:35] [INFO ] Computed and/alt/rep : 296/974/260 causal constraints (skipped 20 transitions) in 35 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:36] [INFO ] Deduced a trap composed of 23 places in 170 ms of which 17 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:36] [INFO ] Deduced a trap composed of 30 places in 241 ms of which 27 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:37] [INFO ] Deduced a trap composed of 37 places in 170 ms of which 13 ms to minimize.
[2026-05-23 20:34:37] [INFO ] Trap strengthening (SAT) tested/added 4/3 trap constraints in 764 ms
[2026-05-23 20:34:37] [INFO ] Added : 173 causal constraints over 36 iterations in 2411 ms. Result :sat
Minimization took 159 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 20:34:37] [INFO ] [Real]Absence check using 9 positive place invariants in 10 ms returned sat
[2026-05-23 20:34:37] [INFO ] [Real]Absence check using 9 positive and 4 generalized place invariants in 4 ms returned sat
[2026-05-23 20:34:37] [INFO ] [Real]Absence check using state equation in 133 ms returned sat
[2026-05-23 20:34:37] [INFO ] [Real]Added 112 Read/Feed constraints in 22 ms returned sat
[2026-05-23 20:34:37] [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 20:34:37] [INFO ] [Nat]Absence check using 9 positive place invariants in 12 ms returned sat
[2026-05-23 20:34:37] [INFO ] [Nat]Absence check using 9 positive and 4 generalized place invariants in 3 ms returned sat
[2026-05-23 20:34:38] [INFO ] [Nat]Absence check using state equation in 133 ms returned sat
[2026-05-23 20:34:38] [INFO ] [Nat]Added 112 Read/Feed constraints in 23 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:38] [INFO ] Deduced a trap composed of 3 places in 84 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:38] [INFO ] Deduced a trap composed of 3 places in 112 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:38] [INFO ] Deduced a trap composed of 20 places in 117 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:38] [INFO ] Deduced a trap composed of 3 places in 112 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:38] [INFO ] Deduced a trap composed of 23 places in 90 ms of which 5 ms to minimize.
[2026-05-23 20:34:38] [INFO ] Trap strengthening (SAT) tested/added 6/5 trap constraints in 647 ms
[2026-05-23 20:34:38] [INFO ] Computed and/alt/rep : 296/974/260 causal constraints (skipped 20 transitions) in 26 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:40] [INFO ] Deduced a trap composed of 3 places in 172 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:40] [INFO ] Deduced a trap composed of 14 places in 154 ms of which 15 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:40] [INFO ] Deduced a trap composed of 43 places in 152 ms of which 14 ms to minimize.
[2026-05-23 20:34:40] [INFO ] Trap strengthening (SAT) tested/added 4/3 trap constraints in 628 ms
[2026-05-23 20:34:40] [INFO ] Added : 165 causal constraints over 33 iterations in 1982 ms. Result :sat
Minimization took 153 ms.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2026-05-23 20:34:40] [INFO ] [Real]Absence check using 9 positive place invariants in 9 ms returned sat
[2026-05-23 20:34:40] [INFO ] [Real]Absence check using 9 positive and 4 generalized place invariants in 3 ms returned sat
[2026-05-23 20:34:41] [INFO ] [Real]Absence check using state equation in 126 ms returned sat
[2026-05-23 20:34:41] [INFO ] [Real]Added 112 Read/Feed constraints in 27 ms returned sat
[2026-05-23 20:34:41] [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 20:34:41] [INFO ] [Nat]Absence check using 9 positive place invariants in 11 ms returned sat
[2026-05-23 20:34:41] [INFO ] [Nat]Absence check using 9 positive and 4 generalized place invariants in 3 ms returned sat
[2026-05-23 20:34:41] [INFO ] [Nat]Absence check using state equation in 127 ms returned sat
[2026-05-23 20:34:41] [INFO ] [Nat]Added 112 Read/Feed constraints in 21 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:41] [INFO ] Deduced a trap composed of 3 places in 119 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:41] [INFO ] Deduced a trap composed of 20 places in 124 ms of which 14 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:41] [INFO ] Deduced a trap composed of 3 places in 110 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:41] [INFO ] Deduced a trap composed of 23 places in 85 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:41] [INFO ] Deduced a trap composed of 3 places in 53 ms of which 4 ms to minimize.
[2026-05-23 20:34:42] [INFO ] Trap strengthening (SAT) tested/added 6/5 trap constraints in 617 ms
[2026-05-23 20:34:42] [INFO ] Computed and/alt/rep : 296/974/260 causal constraints (skipped 20 transitions) in 27 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:43] [INFO ] Deduced a trap composed of 30 places in 181 ms of which 22 ms to minimize.
[2026-05-23 20:34:43] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 256 ms
[2026-05-23 20:34:43] [INFO ] Added : 162 causal constraints over 33 iterations in 1613 ms. Result :sat
Minimization took 131 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[0, 0, 0, 0] Max Struct:[1, 1, 1, 1]
FORMULA EisenbergMcGuire-PT-04-UpperBounds-05 1 TECHNIQUES TOPOLOGICAL PARIKH_WALK
FORMULA EisenbergMcGuire-PT-04-UpperBounds-04 1 TECHNIQUES TOPOLOGICAL PARIKH_WALK
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[0, 0] Max Struct:[1, 1]
Support contains 2 out of 196 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 196/196 places, 448/448 transitions.
Drop transitions (Trivial Post-Agglo cleanup.) removed 4 transitions
Trivial Post-agglo rules discarded 4 transitions
Performed 4 trivial Post agglomeration. Transition count delta: 4
Iterating post reduction 0 with 4 rules applied. Total rules applied 4 place count 196 transition count 444
Reduce places removed 4 places and 0 transitions.
Iterating post reduction 1 with 4 rules applied. Total rules applied 8 place count 192 transition count 444
Performed 51 Pre agglomeration using Quasi-Persistent + Divergent Free condition..
Pre-agglomeration after 2 with 51 Pre rules applied. Total rules applied 8 place count 192 transition count 393
Deduced a syphon composed of 51 places in 6 ms
Reduce places removed 51 places and 0 transitions.
Iterating global reduction 2 with 102 rules applied. Total rules applied 110 place count 141 transition count 393
Discarding 12 places :
Symmetric choice reduction at 2 with 12 rule applications. Total rules 122 place count 129 transition count 345
Iterating global reduction 2 with 12 rules applied. Total rules applied 134 place count 129 transition count 345
Performed 12 Post agglomeration using F-continuation condition.Transition count delta: 12
Deduced a syphon composed of 12 places in 1 ms
Reduce places removed 12 places and 0 transitions.
Iterating global reduction 2 with 24 rules applied. Total rules applied 158 place count 117 transition count 333
Applied a total of 158 rules in 118 ms. Remains 117 /196 variables (removed 79) and now considering 333/448 (removed 115) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 131 ms. Remains : 117/196 places, 333/448 transitions.
[2026-05-23 20:34:44] [INFO ] Flow matrix only has 169 transitions (discarded 164 similar events)
// Phase 1: matrix 169 rows 117 cols
[2026-05-23 20:34:44] [INFO ] Computed 13 invariants in 4 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0, 0] Max Struct:[1, 1]
RANDOM walk for 1000000 steps (2 resets) in 1362 ms. (733 steps per ms)
BEST_FIRST walk for 2000002 steps (4 resets) in 941 ms. (2123 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[0, 0] Max Struct:[1, 1]
[2026-05-23 20:34:46] [INFO ] Flow matrix only has 169 transitions (discarded 164 similar events)
[2026-05-23 20:34:46] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 20:34:46] [INFO ] [Real]Absence check using 9 positive place invariants in 6 ms returned sat
[2026-05-23 20:34:46] [INFO ] [Real]Absence check using 9 positive and 4 generalized place invariants in 7 ms returned sat
[2026-05-23 20:34:46] [INFO ] [Real]Absence check using state equation in 74 ms returned sat
[2026-05-23 20:34:46] [INFO ] State equation strengthened by 76 read => feed constraints.
[2026-05-23 20:34:46] [INFO ] [Real]Added 76 Read/Feed constraints in 13 ms returned sat
[2026-05-23 20:34:46] [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 20:34:46] [INFO ] [Nat]Absence check using 9 positive place invariants in 6 ms returned sat
[2026-05-23 20:34:46] [INFO ] [Nat]Absence check using 9 positive and 4 generalized place invariants in 3 ms returned sat
[2026-05-23 20:34:46] [INFO ] [Nat]Absence check using state equation in 65 ms returned sat
[2026-05-23 20:34:46] [INFO ] [Nat]Added 76 Read/Feed constraints in 13 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:46] [INFO ] Deduced a trap composed of 3 places in 56 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:47] [INFO ] Deduced a trap composed of 3 places in 47 ms of which 3 ms to minimize.
[2026-05-23 20:34:47] [INFO ] Trap strengthening (SAT) tested/added 3/2 trap constraints in 131 ms
[2026-05-23 20:34:47] [INFO ] Computed and/alt/rep : 166/497/130 causal constraints (skipped 35 transitions) in 19 ms.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:47] [INFO ] Deduced a trap composed of 19 places in 59 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:47] [INFO ] Deduced a trap composed of 30 places in 120 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:47] [INFO ] Deduced a trap composed of 29 places in 98 ms of which 10 ms to minimize.
[2026-05-23 20:34:47] [INFO ] Trap strengthening (SAT) tested/added 4/3 trap constraints in 360 ms
[2026-05-23 20:34:47] [INFO ] Added : 57 causal constraints over 13 iterations in 650 ms. Result :sat
Minimization took 68 ms.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 20:34:47] [INFO ] [Real]Absence check using 9 positive place invariants in 6 ms returned sat
[2026-05-23 20:34:47] [INFO ] [Real]Absence check using 9 positive and 4 generalized place invariants in 2 ms returned sat
[2026-05-23 20:34:47] [INFO ] [Real]Absence check using state equation in 70 ms returned sat
[2026-05-23 20:34:47] [INFO ] [Real]Added 76 Read/Feed constraints in 16 ms returned sat
[2026-05-23 20:34:47] [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 20:34:47] [INFO ] [Nat]Absence check using 9 positive place invariants in 7 ms returned sat
[2026-05-23 20:34:47] [INFO ] [Nat]Absence check using 9 positive and 4 generalized place invariants in 2 ms returned sat
[2026-05-23 20:34:48] [INFO ] [Nat]Absence check using state equation in 73 ms returned sat
[2026-05-23 20:34:48] [INFO ] [Nat]Added 76 Read/Feed constraints in 20 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:48] [INFO ] Deduced a trap composed of 3 places in 36 ms of which 2 ms to minimize.
[2026-05-23 20:34:48] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 56 ms
[2026-05-23 20:34:48] [INFO ] Computed and/alt/rep : 166/497/130 causal constraints (skipped 35 transitions) in 16 ms.
[2026-05-23 20:34:48] [INFO ] Added : 35 causal constraints over 7 iterations in 138 ms. Result :sat
Minimization took 45 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[0, 0] Max Struct:[1, 1]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[1, 0] Max Struct:[1, 1]
Support contains 2 out of 117 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 117/117 places, 333/333 transitions.
Applied a total of 0 rules in 21 ms. Remains 117 /117 variables (removed 0) and now considering 333/333 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 22 ms. Remains : 117/117 places, 333/333 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 117/117 places, 333/333 transitions.
Applied a total of 0 rules in 16 ms. Remains 117 /117 variables (removed 0) and now considering 333/333 (removed 0) transitions.
[2026-05-23 20:34:48] [INFO ] Flow matrix only has 169 transitions (discarded 164 similar events)
[2026-05-23 20:34:48] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 20:34:48] [INFO ] Implicit Places using invariants in 185 ms returned []
[2026-05-23 20:34:48] [INFO ] Flow matrix only has 169 transitions (discarded 164 similar events)
[2026-05-23 20:34:48] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 20:34:48] [INFO ] State equation strengthened by 76 read => feed constraints.
[2026-05-23 20:34:49] [INFO ] Implicit Places using invariants and state equation in 380 ms returned []
Implicit Place search using SMT with State Equation took 591 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-23 20:34:49] [INFO ] Redundant transitions in 29 ms returned []
Running 329 sub problems to find dead transitions.
[2026-05-23 20:34:49] [INFO ] Flow matrix only has 169 transitions (discarded 164 similar events)
[2026-05-23 20:34:49] [INFO ] Invariant cache hit.
[2026-05-23 20:34:49] [INFO ] State equation strengthened by 76 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/117 variables, 9/9 constraints. Problems are: Problem set: 0 solved, 329 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/117 variables, 4/13 constraints. Problems are: Problem set: 0 solved, 329 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:51] [INFO ] Deduced a trap composed of 3 places in 111 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:51] [INFO ] Deduced a trap composed of 3 places in 40 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:51] [INFO ] Deduced a trap composed of 22 places in 84 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:51] [INFO ] Deduced a trap composed of 22 places in 87 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:51] [INFO ] Deduced a trap composed of 34 places in 97 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:51] [INFO ] Deduced a trap composed of 22 places in 93 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:51] [INFO ] Deduced a trap composed of 22 places in 86 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:51] [INFO ] Deduced a trap composed of 3 places in 41 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:52] [INFO ] Deduced a trap composed of 22 places in 92 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:52] [INFO ] Deduced a trap composed of 11 places in 62 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:52] [INFO ] Deduced a trap composed of 30 places in 90 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:52] [INFO ] Deduced a trap composed of 22 places in 90 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:52] [INFO ] Deduced a trap composed of 22 places in 84 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:52] [INFO ] Deduced a trap composed of 15 places in 100 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:52] [INFO ] Deduced a trap composed of 13 places in 84 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:52] [INFO ] Deduced a trap composed of 29 places in 92 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:53] [INFO ] Deduced a trap composed of 15 places in 61 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:53] [INFO ] Deduced a trap composed of 29 places in 90 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:53] [INFO ] Deduced a trap composed of 30 places in 123 ms of which 16 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:53] [INFO ] Deduced a trap composed of 35 places in 96 ms of which 7 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/117 variables, 20/33 constraints. Problems are: Problem set: 0 solved, 329 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:54] [INFO ] Deduced a trap composed of 17 places in 97 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:54] [INFO ] Deduced a trap composed of 19 places in 64 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:54] [INFO ] Deduced a trap composed of 3 places in 47 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:54] [INFO ] Deduced a trap composed of 30 places in 107 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:54] [INFO ] Deduced a trap composed of 22 places in 116 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:55] [INFO ] Deduced a trap composed of 22 places in 98 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:55] [INFO ] Deduced a trap composed of 32 places in 111 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:55] [INFO ] Deduced a trap composed of 32 places in 80 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:55] [INFO ] Deduced a trap composed of 30 places in 125 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:55] [INFO ] Deduced a trap composed of 32 places in 115 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:55] [INFO ] Deduced a trap composed of 34 places in 108 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:55] [INFO ] Deduced a trap composed of 30 places in 110 ms of which 8 ms to minimize.
At refinement iteration 3 (INCLUDED_ONLY) 0/117 variables, 12/45 constraints. Problems are: Problem set: 0 solved, 329 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:59] [INFO ] Deduced a trap composed of 30 places in 105 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:59] [INFO ] Deduced a trap composed of 30 places in 88 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:59] [INFO ] Deduced a trap composed of 29 places in 96 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:59] [INFO ] Deduced a trap composed of 29 places in 98 ms of which 11 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:34:59] [INFO ] Deduced a trap composed of 29 places in 98 ms of which 9 ms to minimize.
At refinement iteration 4 (INCLUDED_ONLY) 0/117 variables, 5/50 constraints. Problems are: Problem set: 0 solved, 329 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:01] [INFO ] Deduced a trap composed of 35 places in 121 ms of which 6 ms to minimize.
At refinement iteration 5 (INCLUDED_ONLY) 0/117 variables, 1/51 constraints. Problems are: Problem set: 0 solved, 329 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:03] [INFO ] Deduced a trap composed of 34 places in 103 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:03] [INFO ] Deduced a trap composed of 34 places in 118 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:03] [INFO ] Deduced a trap composed of 34 places in 110 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:04] [INFO ] Deduced a trap composed of 34 places in 98 ms of which 6 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/117 variables, 4/55 constraints. Problems are: Problem set: 0 solved, 329 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:06] [INFO ] Deduced a trap composed of 35 places in 89 ms of which 6 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/117 variables, 1/56 constraints. Problems are: Problem set: 0 solved, 329 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:08] [INFO ] Deduced a trap composed of 32 places in 91 ms of which 6 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/117 variables, 1/57 constraints. Problems are: Problem set: 0 solved, 329 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/117 variables, 0/57 constraints. Problems are: Problem set: 0 solved, 329 unsolved
At refinement iteration 10 (OVERLAPS) 169/286 variables, 117/174 constraints. Problems are: Problem set: 0 solved, 329 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/286 variables, 76/250 constraints. Problems are: Problem set: 0 solved, 329 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:16] [INFO ] Deduced a trap composed of 30 places in 118 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:16] [INFO ] Deduced a trap composed of 30 places in 105 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:16] [INFO ] Deduced a trap composed of 30 places in 105 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:16] [INFO ] Deduced a trap composed of 30 places in 111 ms of which 9 ms to minimize.
At refinement iteration 12 (INCLUDED_ONLY) 0/286 variables, 4/254 constraints. Problems are: Problem set: 0 solved, 329 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 286/286 variables, and 254 constraints, problems are : Problem set: 0 solved, 329 unsolved in 30817 ms.
Refiners :[Positive P Invariants (semi-flows): 9/9 constraints, Generalized P Invariants (flows): 4/4 constraints, State Equation: 117/117 constraints, ReadFeed: 76/76 constraints, PredecessorRefiner: 329/329 constraints, Known Traps: 48/48 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 329 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/117 variables, 9/9 constraints. Problems are: Problem set: 0 solved, 329 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/117 variables, 4/13 constraints. Problems are: Problem set: 0 solved, 329 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/117 variables, 48/61 constraints. Problems are: Problem set: 0 solved, 329 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:21] [INFO ] Deduced a trap composed of 29 places in 98 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:21] [INFO ] Deduced a trap composed of 29 places in 89 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:22] [INFO ] Deduced a trap composed of 27 places in 88 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:22] [INFO ] Deduced a trap composed of 22 places in 90 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:22] [INFO ] Deduced a trap composed of 22 places in 92 ms of which 6 ms to minimize.
At refinement iteration 3 (INCLUDED_ONLY) 0/117 variables, 5/66 constraints. Problems are: Problem set: 0 solved, 329 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:24] [INFO ] Deduced a trap composed of 35 places in 123 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:24] [INFO ] Deduced a trap composed of 30 places in 121 ms of which 17 ms to minimize.
At refinement iteration 4 (INCLUDED_ONLY) 0/117 variables, 2/68 constraints. Problems are: Problem set: 0 solved, 329 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/117 variables, 0/68 constraints. Problems are: Problem set: 0 solved, 329 unsolved
At refinement iteration 6 (OVERLAPS) 169/286 variables, 117/185 constraints. Problems are: Problem set: 0 solved, 329 unsolved
At refinement iteration 7 (INCLUDED_ONLY) 0/286 variables, 76/261 constraints. Problems are: Problem set: 0 solved, 329 unsolved
At refinement iteration 8 (INCLUDED_ONLY) 0/286 variables, 329/590 constraints. Problems are: Problem set: 0 solved, 329 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:35] [INFO ] Deduced a trap composed of 29 places in 108 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:38] [INFO ] Deduced a trap composed of 22 places in 92 ms of which 7 ms to minimize.
At refinement iteration 9 (INCLUDED_ONLY) 0/286 variables, 2/592 constraints. Problems are: Problem set: 0 solved, 329 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:47] [INFO ] Deduced a trap composed of 29 places in 86 ms of which 6 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 286/286 variables, and 593 constraints, problems are : Problem set: 0 solved, 329 unsolved in 30018 ms.
Refiners :[Positive P Invariants (semi-flows): 9/9 constraints, Generalized P Invariants (flows): 4/4 constraints, State Equation: 117/117 constraints, ReadFeed: 76/76 constraints, PredecessorRefiner: 329/329 constraints, Known Traps: 58/58 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 61047ms problems are : Problem set: 0 solved, 329 unsolved
Search for dead transitions found 0 dead transitions in 61065ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 61728 ms. Remains : 117/117 places, 333/333 transitions.
[2026-05-23 20:35:50] [INFO ] Flow matrix only has 169 transitions (discarded 164 similar events)
[2026-05-23 20:35:50] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[1, 0] Max Struct:[1, 1]
FORMULA EisenbergMcGuire-PT-04-UpperBounds-03 1 TECHNIQUES TOPOLOGICAL INITIAL_STATE
RANDOM walk for 1000000 steps (2 resets) in 1258 ms. (794 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 433 ms. (2304 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[0] Max Struct:[1]
[2026-05-23 20:35:51] [INFO ] Flow matrix only has 169 transitions (discarded 164 similar events)
[2026-05-23 20:35:51] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 20:35:51] [INFO ] [Real]Absence check using 9 positive place invariants in 6 ms returned sat
[2026-05-23 20:35:51] [INFO ] [Real]Absence check using 9 positive and 4 generalized place invariants in 2 ms returned sat
[2026-05-23 20:35:51] [INFO ] [Real]Absence check using state equation in 67 ms returned sat
[2026-05-23 20:35:51] [INFO ] State equation strengthened by 76 read => feed constraints.
[2026-05-23 20:35:51] [INFO ] [Real]Added 76 Read/Feed constraints in 21 ms returned sat
[2026-05-23 20:35:51] [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 20:35:52] [INFO ] [Nat]Absence check using 9 positive place invariants in 7 ms returned sat
[2026-05-23 20:35:52] [INFO ] [Nat]Absence check using 9 positive and 4 generalized place invariants in 6 ms returned sat
[2026-05-23 20:35:52] [INFO ] [Nat]Absence check using state equation in 72 ms returned sat
[2026-05-23 20:35:52] [INFO ] [Nat]Added 76 Read/Feed constraints in 14 ms returned sat
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:52] [INFO ] Deduced a trap composed of 3 places in 38 ms of which 3 ms to minimize.
[2026-05-23 20:35:52] [INFO ] Trap strengthening (SAT) tested/added 2/1 trap constraints in 55 ms
[2026-05-23 20:35:52] [INFO ] Computed and/alt/rep : 166/497/130 causal constraints (skipped 35 transitions) in 17 ms.
[2026-05-23 20:35:52] [INFO ] Added : 35 causal constraints over 7 iterations in 153 ms. Result :sat
Minimization took 49 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[0] Max Struct:[1]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[0] Max Struct:[1]
Support contains 1 out of 117 places. Attempting structural reductions.
Drop transitions (Removing consumers from one bounded place p34_1_0) removed 1 transitions
Starting structural reductions in REACHABILITY mode, iteration 0 : 117/117 places, 332/332 transitions.
Reduce places removed 1 places and 1 transitions.
Iterating post reduction 0 with 1 rules applied. Total rules applied 1 place count 116 transition count 331
Reduce places removed 1 places and 1 transitions.
Iterating post reduction 1 with 1 rules applied. Total rules applied 2 place count 115 transition count 330
Applied a total of 2 rules in 19 ms. Remains 115 /117 variables (removed 2) and now considering 330/332 (removed 2) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 20 ms. Remains : 115/117 places, 330/332 transitions.
[2026-05-23 20:35:52] [INFO ] Flow matrix only has 166 transitions (discarded 164 similar events)
// Phase 1: matrix 166 rows 115 cols
[2026-05-23 20:35:52] [INFO ] Computed 13 invariants in 3 ms
Current structural bounds on expressions (after invariants) : Max Seen:[0] Max Struct:[1]
RANDOM walk for 1000000 steps (2 resets) in 1261 ms. (792 steps per ms)
BEST_FIRST walk for 1000001 steps (2 resets) in 419 ms. (2380 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[0] Max Struct:[1]
[2026-05-23 20:35:54] [INFO ] Flow matrix only has 166 transitions (discarded 164 similar events)
[2026-05-23 20:35:54] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2026-05-23 20:35:54] [INFO ] [Real]Absence check using 9 positive place invariants in 6 ms returned sat
[2026-05-23 20:35:54] [INFO ] [Real]Absence check using 9 positive and 4 generalized place invariants in 3 ms returned sat
[2026-05-23 20:35:54] [INFO ] [Real]Absence check using state equation in 77 ms returned sat
[2026-05-23 20:35:54] [INFO ] State equation strengthened by 74 read => feed constraints.
[2026-05-23 20:35:54] [INFO ] [Real]Added 74 Read/Feed constraints in 16 ms returned sat
[2026-05-23 20:35:54] [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 20:35:54] [INFO ] [Nat]Absence check using 9 positive place invariants in 6 ms returned sat
[2026-05-23 20:35:54] [INFO ] [Nat]Absence check using 9 positive and 4 generalized place invariants in 3 ms returned sat
[2026-05-23 20:35:54] [INFO ] [Nat]Absence check using state equation in 83 ms returned sat
[2026-05-23 20:35:54] [INFO ] [Nat]Added 74 Read/Feed constraints in 18 ms returned sat
[2026-05-23 20:35:54] [INFO ] Computed and/alt/rep : 163/486/127 causal constraints (skipped 35 transitions) in 18 ms.
[2026-05-23 20:35:54] [INFO ] Added : 35 causal constraints over 7 iterations in 147 ms. Result :sat
Minimization took 51 ms.
Current structural bounds on expressions (after SMT) : Max Seen:[0] Max Struct:[1]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[0] Max Struct:[1]
Support contains 1 out of 115 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 115/115 places, 330/330 transitions.
Applied a total of 0 rules in 15 ms. Remains 115 /115 variables (removed 0) and now considering 330/330 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 15 ms. Remains : 115/115 places, 330/330 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 115/115 places, 330/330 transitions.
Applied a total of 0 rules in 14 ms. Remains 115 /115 variables (removed 0) and now considering 330/330 (removed 0) transitions.
[2026-05-23 20:35:54] [INFO ] Flow matrix only has 166 transitions (discarded 164 similar events)
[2026-05-23 20:35:54] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 20:35:54] [INFO ] Implicit Places using invariants in 211 ms returned []
[2026-05-23 20:35:54] [INFO ] Flow matrix only has 166 transitions (discarded 164 similar events)
[2026-05-23 20:35:54] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2026-05-23 20:35:55] [INFO ] State equation strengthened by 74 read => feed constraints.
[2026-05-23 20:35:55] [INFO ] Implicit Places using invariants and state equation in 429 ms returned []
Implicit Place search using SMT with State Equation took 642 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2026-05-23 20:35:55] [INFO ] Redundant transitions in 9 ms returned []
Running 326 sub problems to find dead transitions.
[2026-05-23 20:35:55] [INFO ] Flow matrix only has 166 transitions (discarded 164 similar events)
[2026-05-23 20:35:55] [INFO ] Invariant cache hit.
[2026-05-23 20:35:55] [INFO ] State equation strengthened by 74 read => feed constraints.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/114 variables, 7/7 constraints. Problems are: Problem set: 0 solved, 326 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/114 variables, 3/10 constraints. Problems are: Problem set: 0 solved, 326 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:56] [INFO ] Deduced a trap composed of 3 places in 42 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:57] [INFO ] Deduced a trap composed of 3 places in 57 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:57] [INFO ] Deduced a trap composed of 13 places in 61 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:57] [INFO ] Deduced a trap composed of 15 places in 60 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:57] [INFO ] Deduced a trap composed of 19 places in 51 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:35:57] [INFO ] Deduced a trap composed of 3 places in 37 ms of which 4 ms to minimize.
At refinement iteration 2 (INCLUDED_ONLY) 0/114 variables, 6/16 constraints. Problems are: Problem set: 0 solved, 326 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/114 variables, 0/16 constraints. Problems are: Problem set: 0 solved, 326 unsolved
At refinement iteration 4 (OVERLAPS) 1/115 variables, 2/18 constraints. Problems are: Problem set: 0 solved, 326 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/115 variables, 1/19 constraints. Problems are: Problem set: 0 solved, 326 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:02] [INFO ] Deduced a trap composed of 3 places in 42 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:02] [INFO ] Deduced a trap composed of 22 places in 82 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:03] [INFO ] Deduced a trap composed of 22 places in 88 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:03] [INFO ] Deduced a trap composed of 22 places in 85 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:03] [INFO ] Deduced a trap composed of 11 places in 88 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:03] [INFO ] Deduced a trap composed of 22 places in 84 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:03] [INFO ] Deduced a trap composed of 29 places in 94 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:03] [INFO ] Deduced a trap composed of 15 places in 62 ms of which 4 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:03] [INFO ] Deduced a trap composed of 22 places in 84 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:04] [INFO ] Deduced a trap composed of 29 places in 92 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:04] [INFO ] Deduced a trap composed of 29 places in 95 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:04] [INFO ] Deduced a trap composed of 17 places in 65 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:04] [INFO ] Deduced a trap composed of 22 places in 96 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:04] [INFO ] Deduced a trap composed of 30 places in 114 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:04] [INFO ] Deduced a trap composed of 32 places in 109 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:05] [INFO ] Deduced a trap composed of 30 places in 107 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:05] [INFO ] Deduced a trap composed of 32 places in 85 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:05] [INFO ] Deduced a trap composed of 30 places in 108 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:05] [INFO ] Deduced a trap composed of 30 places in 93 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:05] [INFO ] Deduced a trap composed of 32 places in 101 ms of which 11 ms to minimize.
At refinement iteration 6 (INCLUDED_ONLY) 0/115 variables, 20/39 constraints. Problems are: Problem set: 0 solved, 326 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:07] [INFO ] Deduced a trap composed of 30 places in 95 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:07] [INFO ] Deduced a trap composed of 30 places in 107 ms of which 13 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:08] [INFO ] Deduced a trap composed of 35 places in 92 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:08] [INFO ] Deduced a trap composed of 34 places in 115 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:08] [INFO ] Deduced a trap composed of 22 places in 101 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:08] [INFO ] Deduced a trap composed of 30 places in 97 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:08] [INFO ] Deduced a trap composed of 29 places in 85 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:09] [INFO ] Deduced a trap composed of 29 places in 85 ms of which 10 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/115 variables, 8/47 constraints. Problems are: Problem set: 0 solved, 326 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:10] [INFO ] Deduced a trap composed of 30 places in 111 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:11] [INFO ] Deduced a trap composed of 30 places in 87 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:11] [INFO ] Deduced a trap composed of 30 places in 83 ms of which 5 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/115 variables, 3/50 constraints. Problems are: Problem set: 0 solved, 326 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:11] [INFO ] Deduced a trap composed of 29 places in 85 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:12] [INFO ] Deduced a trap composed of 30 places in 89 ms of which 9 ms to minimize.
At refinement iteration 9 (INCLUDED_ONLY) 0/115 variables, 2/52 constraints. Problems are: Problem set: 0 solved, 326 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:15] [INFO ] Deduced a trap composed of 34 places in 106 ms of which 10 ms to minimize.
At refinement iteration 10 (INCLUDED_ONLY) 0/115 variables, 1/53 constraints. Problems are: Problem set: 0 solved, 326 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:18] [INFO ] Deduced a trap composed of 31 places in 113 ms of which 13 ms to minimize.
At refinement iteration 11 (INCLUDED_ONLY) 0/115 variables, 1/54 constraints. Problems are: Problem set: 0 solved, 326 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:19] [INFO ] Deduced a trap composed of 32 places in 76 ms of which 5 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:19] [INFO ] Deduced a trap composed of 35 places in 94 ms of which 6 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:19] [INFO ] Deduced a trap composed of 22 places in 106 ms of which 12 ms to minimize.
At refinement iteration 12 (INCLUDED_ONLY) 0/115 variables, 3/57 constraints. Problems are: Problem set: 0 solved, 326 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:22] [INFO ] Deduced a trap composed of 32 places in 105 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:23] [INFO ] Deduced a trap composed of 29 places in 85 ms of which 9 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:23] [INFO ] Deduced a trap composed of 22 places in 96 ms of which 10 ms to minimize.
At refinement iteration 13 (INCLUDED_ONLY) 0/115 variables, 3/60 constraints. Problems are: Problem set: 0 solved, 326 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:24] [INFO ] Deduced a trap composed of 26 places in 108 ms of which 9 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Real declared 115/281 variables, and 61 constraints, problems are : Problem set: 0 solved, 326 unsolved in 30014 ms.
Refiners :[Positive P Invariants (semi-flows): 9/9 constraints, Generalized P Invariants (flows): 4/4 constraints, State Equation: 0/115 constraints, ReadFeed: 0/74 constraints, PredecessorRefiner: 326/326 constraints, Known Traps: 48/48 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 326 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/114 variables, 7/7 constraints. Problems are: Problem set: 0 solved, 326 unsolved
At refinement iteration 1 (INCLUDED_ONLY) 0/114 variables, 3/10 constraints. Problems are: Problem set: 0 solved, 326 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/114 variables, 48/58 constraints. Problems are: Problem set: 0 solved, 326 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:26] [INFO ] Deduced a trap composed of 7 places in 38 ms of which 3 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:27] [INFO ] Deduced a trap composed of 35 places in 90 ms of which 7 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:27] [INFO ] Deduced a trap composed of 34 places in 88 ms of which 6 ms to minimize.
At refinement iteration 3 (INCLUDED_ONLY) 0/114 variables, 3/61 constraints. Problems are: Problem set: 0 solved, 326 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/114 variables, 0/61 constraints. Problems are: Problem set: 0 solved, 326 unsolved
At refinement iteration 5 (OVERLAPS) 1/115 variables, 2/63 constraints. Problems are: Problem set: 0 solved, 326 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/115 variables, 1/64 constraints. Problems are: Problem set: 0 solved, 326 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:32] [INFO ] Deduced a trap composed of 29 places in 86 ms of which 7 ms to minimize.
At refinement iteration 7 (INCLUDED_ONLY) 0/115 variables, 1/65 constraints. Problems are: Problem set: 0 solved, 326 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:34] [INFO ] Deduced a trap composed of 30 places in 89 ms of which 10 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:34] [INFO ] Deduced a trap composed of 32 places in 115 ms of which 17 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:34] [INFO ] Deduced a trap composed of 34 places in 119 ms of which 12 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:34] [INFO ] Deduced a trap composed of 28 places in 127 ms of which 11 ms to minimize.
At refinement iteration 8 (INCLUDED_ONLY) 0/115 variables, 4/69 constraints. Problems are: Problem set: 0 solved, 326 unsolved
At refinement iteration 9 (INCLUDED_ONLY) 0/115 variables, 0/69 constraints. Problems are: Problem set: 0 solved, 326 unsolved
At refinement iteration 10 (OVERLAPS) 166/281 variables, 115/184 constraints. Problems are: Problem set: 0 solved, 326 unsolved
At refinement iteration 11 (INCLUDED_ONLY) 0/281 variables, 74/258 constraints. Problems are: Problem set: 0 solved, 326 unsolved
At refinement iteration 12 (INCLUDED_ONLY) 0/281 variables, 326/584 constraints. Problems are: Problem set: 0 solved, 326 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:42] [INFO ] Deduced a trap composed of 35 places in 115 ms of which 8 ms to minimize.
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:45] [INFO ] Deduced a trap composed of 22 places in 95 ms of which 7 ms to minimize.
At refinement iteration 13 (INCLUDED_ONLY) 0/281 variables, 2/586 constraints. Problems are: Problem set: 0 solved, 326 unsolved
Starting Z3 with timeout 120.0 s and query timeout 12000.0 ms
[2026-05-23 20:36:53] [INFO ] Deduced a trap composed of 37 places in 103 ms of which 9 ms to minimize.
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 281/281 variables, and 587 constraints, problems are : Problem set: 0 solved, 326 unsolved in 30018 ms.
Refiners :[Positive P Invariants (semi-flows): 9/9 constraints, Generalized P Invariants (flows): 4/4 constraints, State Equation: 115/115 constraints, ReadFeed: 74/74 constraints, PredecessorRefiner: 326/326 constraints, Known Traps: 59/59 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 60110ms problems are : Problem set: 0 solved, 326 unsolved
Search for dead transitions found 0 dead transitions in 60114ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 60786 ms. Remains : 115/115 places, 330/330 transitions.
RANDOM walk for 40000 steps (8 resets) in 870 ms. (45 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40004 steps (8 resets) in 333 ms. (119 steps per ms) remains 2/2 properties
BEST_FIRST walk for 40004 steps (8 resets) in 224 ms. (177 steps per ms) remains 2/2 properties
[2026-05-23 20:36:56] [INFO ] Flatten gal took : 155 ms
Finished probabilistic random walk after 643 steps, run visited all 2 properties in 49 ms. (steps per millisecond=13 )
Probabilistic random walk after 643 steps, saw 474 distinct states, run finished after 55 ms. (steps per millisecond=11 ) properties seen :2
[2026-05-23 20:36:56] [INFO ] Flatten gal took : 60 ms
[2026-05-23 20:36:56] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality1580376944470099561.gal : 23 ms
[2026-05-23 20:36:56] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality9194131180162732409.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/ReachabilityCardinality1580376944470099561.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality9194131180162732409.prop' '--nowitness' '--gen-order' 'FOLLOW'

ITS runner timed out or was interrupted.
ITS tools runner thread asked to quit. Dying gracefully.
FORMULA EisenbergMcGuire-PT-04-UpperBounds-10 1 TECHNIQUES REACHABILITY_MAX
Current structural bounds on expressions (After reachability solving 1 queries.) : Max Seen:[] Max Struct:[]
All properties solved without resorting to model-checking.
Total runtime 148958 ms.

BK_STOP 1779568616332

--------------------
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
++ perl -pe 's/.*\.//g'
++ sed s/.jar//
++ 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="EisenbergMcGuire-PT-04"
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 EisenbergMcGuire-PT-04, 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-177955743800031"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/EisenbergMcGuire-PT-04.tgz
mv EisenbergMcGuire-PT-04 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 '' UpperBounds.xml | cut -d '>' -f 2 | cut -d '<' -f 1 | sort -u) ; do
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 ;