Execution Chart

Sorry, for this execution, no execution chart could be reported.

Trace from the execution

Formatting '/data/fkordon/mcc2025-input.r072-tall-174860067300381.qcow2', fmt=qcow2 size=4294967296 backing_file=/data/fkordon/mcc2025-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 2-5832
Executing tool itstools
Input is DNAwalker-PT-02track12Block2, examination is UpperBounds
Time confinement is 3600 seconds
Memory confinement is 16384 MBytes
Number of cores is 4
Run identifier is r072-tall-174860067300381
=====================================================================

--------------------
preparation of the directory to be used:
/home/mcc/execution
total 424K
-rw-r--r-- 1 mcc users 4.8K May 29 14:47 CTLCardinality.txt
-rw-r--r-- 1 mcc users 43K May 29 14:47 CTLCardinality.xml
-rw-r--r-- 1 mcc users 6.6K May 29 14:47 CTLFireability.txt
-rw-r--r-- 1 mcc users 63K May 29 14:47 CTLFireability.xml
-rw-r--r-- 1 mcc users 4.2K May 29 14:32 GenericPropertiesDefinition.xml
-rw-r--r-- 1 mcc users 4.0K May 29 14:47 LTLCardinality.txt
-rw-r--r-- 1 mcc users 31K May 29 14:47 LTLCardinality.xml
-rw-r--r-- 1 mcc users 2.4K May 29 14:47 LTLFireability.txt
-rw-r--r-- 1 mcc users 18K May 29 14:47 LTLFireability.xml
-rw-r--r-- 1 mcc users 8.8K May 29 14:47 ReachabilityCardinality.txt
-rw-r--r-- 1 mcc users 89K May 29 14:47 ReachabilityCardinality.xml
-rw-r--r-- 1 mcc users 7.6K May 29 14:47 ReachabilityFireability.txt
-rw-r--r-- 1 mcc users 59K May 29 14:47 ReachabilityFireability.xml
-rw-r--r-- 1 mcc users 1.8K May 29 14:47 UpperBounds.txt
-rw-r--r-- 1 mcc users 3.8K May 29 14:47 UpperBounds.xml
-rw-r--r-- 1 mcc users 6 May 29 14:32 equiv_col
-rw-r--r-- 1 mcc users 16 May 29 14:32 instance
-rw-r--r-- 1 mcc users 6 May 29 14:32 iscolored
-rw-r--r-- 1 mcc users 37K May 29 14:32 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 DNAwalker-PT-02track12Block2-UpperBounds-00
FORMULA_NAME DNAwalker-PT-02track12Block2-UpperBounds-01
FORMULA_NAME DNAwalker-PT-02track12Block2-UpperBounds-02
FORMULA_NAME DNAwalker-PT-02track12Block2-UpperBounds-03
FORMULA_NAME DNAwalker-PT-02track12Block2-UpperBounds-04
FORMULA_NAME DNAwalker-PT-02track12Block2-UpperBounds-05
FORMULA_NAME DNAwalker-PT-02track12Block2-UpperBounds-06
FORMULA_NAME DNAwalker-PT-02track12Block2-UpperBounds-07
FORMULA_NAME DNAwalker-PT-02track12Block2-UpperBounds-08
FORMULA_NAME DNAwalker-PT-02track12Block2-UpperBounds-09
FORMULA_NAME DNAwalker-PT-02track12Block2-UpperBounds-10
FORMULA_NAME DNAwalker-PT-02track12Block2-UpperBounds-11
FORMULA_NAME DNAwalker-PT-02track12Block2-UpperBounds-12
FORMULA_NAME DNAwalker-PT-02track12Block2-UpperBounds-13
FORMULA_NAME DNAwalker-PT-02track12Block2-UpperBounds-14
FORMULA_NAME DNAwalker-PT-02track12Block2-UpperBounds-15

=== Now, execution of the tool begins

BK_START 1748707248912

Invoking MCC driver with
BK_TOOL=itstools
BK_EXAMINATION=UpperBounds
BK_BIN_PATH=/home/mcc/BenchKit/bin/
BK_TIME_CONFINEMENT=3600
BK_INPUT=DNAwalker-PT-02track12Block2
BK_MEMORY_CONFINEMENT=16384
Not applying reductions.
Model is PT
UpperBounds PT
Running Version 202505121319
[2025-05-31 16:00:50] [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]
[2025-05-31 16:00:50] [INFO ] Parsing pnml file : /home/mcc/execution/model.pnml
[2025-05-31 16:00:50] [INFO ] Load time of PNML (sax parser for PT used): 55 ms
[2025-05-31 16:00:50] [INFO ] Transformed 14 places.
[2025-05-31 16:00:50] [INFO ] Transformed 84 transitions.
[2025-05-31 16:00:50] [INFO ] Parsed PT model containing 14 places and 84 transitions and 244 arcs in 151 ms.
Parsed 16 properties from file /home/mcc/execution/UpperBounds.xml in 7 ms.
Reduction of identical properties reduced properties to check from 16 to 9
Current structural bounds on expressions (Initially) : Max Seen:[1, 1, 0, 1, 1, 1, 2, 0, 1] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Current structural bounds on expressions (Before main loop) : Max Seen:[1, 1, 0, 1, 1, 1, 2, 0, 1] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2025-05-31 16:00:50] [INFO ] Flow matrix only has 83 transitions (discarded 1 similar events)
// Phase 1: matrix 83 rows 14 cols
[2025-05-31 16:00:50] [INFO ] Computed 0 invariants in 9 ms
Current structural bounds on expressions (after invariants) : Max Seen:[1, 1, 0, 1, 1, 1, 2, 0, 1] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 10000 steps (1125 resets) in 41 ms. (238 steps per ms)
BEST_FIRST walk for 90007 steps (1651 resets) in 114 ms. (782 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2, 2, 2, 1, 2, 2, 2, 2, 2] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2025-05-31 16:00:50] [INFO ] Flow matrix only has 83 transitions (discarded 1 similar events)
[2025-05-31 16:00:50] [INFO ] Invariant cache hit.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2025-05-31 16:00:50] [INFO ] [Real]Absence check using state equation in 40 ms returned sat
[2025-05-31 16:00:50] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2025-05-31 16:00:51] [INFO ] [Nat]Absence check using state equation in 1023 ms returned unknown
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2025-05-31 16:00:51] [INFO ] [Real]Absence check using state equation in 27 ms returned sat
[2025-05-31 16:00:51] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2025-05-31 16:00:52] [INFO ] [Nat]Absence check using state equation in 1019 ms returned unknown
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2025-05-31 16:00:52] [INFO ] [Real]Absence check using state equation in 19 ms returned sat
[2025-05-31 16:00:52] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2025-05-31 16:00:53] [INFO ] [Nat]Absence check using state equation in 1013 ms returned unknown
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2025-05-31 16:00:53] [INFO ] [Real]Absence check using state equation in 14 ms returned unsat
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2025-05-31 16:00:54] [INFO ] [Real]Absence check using state equation in 143 ms returned sat
[2025-05-31 16:00:54] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2025-05-31 16:00:55] [INFO ] [Nat]Absence check using state equation in 1015 ms returned unknown
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2025-05-31 16:00:55] [INFO ] [Real]Absence check using state equation in 16 ms returned sat
[2025-05-31 16:00:55] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2025-05-31 16:00:56] [INFO ] [Nat]Absence check using state equation in 1018 ms returned unknown
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2025-05-31 16:00:56] [INFO ] [Real]Absence check using state equation in 16 ms returned sat
[2025-05-31 16:00:56] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2025-05-31 16:00:57] [INFO ] [Nat]Absence check using state equation in 1017 ms returned unknown
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2025-05-31 16:00:57] [INFO ] [Real]Absence check using state equation in 20 ms returned sat
[2025-05-31 16:00:57] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2025-05-31 16:00:58] [INFO ] [Nat]Absence check using state equation in 1013 ms returned unknown
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2025-05-31 16:00:58] [INFO ] [Real]Absence check using state equation in 11 ms returned sat
[2025-05-31 16:00:58] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 5.0 s and query timeout 500.0 ms
[2025-05-31 16:00:58] [INFO ] [Nat]Absence check using state equation in 514 ms returned unknown
Current structural bounds on expressions (after SMT) : Max Seen:[2, 2, 2, 1, 2, 2, 2, 2, 2] Max Struct:[+inf, +inf, +inf, 1, +inf, +inf, +inf, +inf, +inf]
FORMULA DNAwalker-PT-02track12Block2-UpperBounds-05 1 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[2, 2, 2, 2, 2, 2, 2, 2] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
Support contains 8 out of 14 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 14/14 places, 84/84 transitions.
Drop transitions (Empty/Sink Transition effects.) removed 4 transitions
Reduce isomorphic transitions removed 4 transitions.
Iterating post reduction 0 with 4 rules applied. Total rules applied 4 place count 14 transition count 80
Applied a total of 4 rules in 15 ms. Remains 14 /14 variables (removed 0) and now considering 80/84 (removed 4) transitions.
Running 74 sub problems to find dead transitions.
// Phase 1: matrix 80 rows 14 cols
[2025-05-31 16:00:58] [INFO ] Computed 0 invariants in 2 ms
[2025-05-31 16:00:59] [INFO ] State equation strengthened by 16 read => feed constraints.
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 74 unsolved
At refinement iteration 1 (OVERLAPS) 80/92 variables, 12/12 constraints. Problems are: Problem set: 0 solved, 74 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/92 variables, 16/28 constraints. Problems are: Problem set: 0 solved, 74 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/92 variables, 0/28 constraints. Problems are: Problem set: 0 solved, 74 unsolved
At refinement iteration 4 (OVERLAPS) 2/94 variables, 2/30 constraints. Problems are: Problem set: 0 solved, 74 unsolved
At refinement iteration 5 (INCLUDED_ONLY) 0/94 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 74 unsolved
At refinement iteration 6 (OVERLAPS) 0/94 variables, 0/30 constraints. Problems are: Problem set: 0 solved, 74 unsolved
No progress, stopping.
After SMT solving in domain Real declared 94/94 variables, and 30 constraints, problems are : Problem set: 0 solved, 74 unsolved in 2061 ms.
Refiners :[State Equation: 14/14 constraints, ReadFeed: 16/16 constraints, PredecessorRefiner: 74/74 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 74 unsolved
Starting Z3 with timeout 20.0 s and query timeout 2000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/12 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 74 unsolved
At refinement iteration 1 (OVERLAPS) 80/92 variables, 12/12 constraints. Problems are: Problem set: 0 solved, 74 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/92 variables, 16/28 constraints. Problems are: Problem set: 0 solved, 74 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/92 variables, 74/102 constraints. Problems are: Problem set: 0 solved, 74 unsolved
At refinement iteration 4 (INCLUDED_ONLY) 0/92 variables, 0/102 constraints. Problems are: Problem set: 0 solved, 74 unsolved
At refinement iteration 5 (OVERLAPS) 2/94 variables, 2/104 constraints. Problems are: Problem set: 0 solved, 74 unsolved
At refinement iteration 6 (INCLUDED_ONLY) 0/94 variables, 0/104 constraints. Problems are: Problem set: 0 solved, 74 unsolved
Solver is answering 'unknown', stopping.
After SMT solving in domain Int declared 94/94 variables, and 104 constraints, problems are : Problem set: 0 solved, 74 unsolved in 20011 ms.
Refiners :[State Equation: 14/14 constraints, ReadFeed: 16/16 constraints, PredecessorRefiner: 74/74 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 22173ms problems are : Problem set: 0 solved, 74 unsolved
Search for dead transitions found 0 dead transitions in 22190ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 22216 ms. Remains : 14/14 places, 80/84 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
When looking for a positive semi flow solution, solver replied unsat
[2025-05-31 16:01:21] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[2, 2, 2, 2, 2, 2, 2, 2] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (107660 resets) in 1539 ms. (649 steps per ms)
BEST_FIRST walk for 8000007 steps (150993 resets) in 3166 ms. (2526 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2, 2, 2, 2, 2, 2, 2, 2] Max Struct:[+inf, +inf, +inf, +inf, +inf, +inf, +inf, +inf]
[2025-05-31 16:01:25] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:01:25] [INFO ] [Real]Absence check using state equation in 18 ms returned sat
[2025-05-31 16:01:25] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:01:34] [INFO ] [Nat]Absence check using state equation in 9014 ms returned unknown
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:01:35] [INFO ] [Real]Absence check using state equation in 17 ms returned sat
[2025-05-31 16:01:35] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:01:44] [INFO ] [Nat]Absence check using state equation in 9013 ms returned unknown
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:01:44] [INFO ] [Real]Absence check using state equation in 17 ms returned sat
[2025-05-31 16:01:44] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:01:53] [INFO ] [Nat]Absence check using state equation in 9012 ms returned unknown
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:01:53] [INFO ] [Real]Absence check using state equation in 16 ms returned sat
[2025-05-31 16:01:53] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:02:00] [INFO ] [Nat]Absence check using state equation in 7170 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:02:00] [INFO ] [Real]Absence check using state equation in 11 ms returned sat
[2025-05-31 16:02:00] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:02:06] [INFO ] [Nat]Absence check using state equation in 5685 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:02:06] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2025-05-31 16:02:06] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:02:15] [INFO ] [Nat]Absence check using state equation in 9015 ms returned unknown
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:02:15] [INFO ] [Real]Absence check using state equation in 13 ms returned sat
[2025-05-31 16:02:15] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:02:22] [INFO ] [Nat]Absence check using state equation in 6947 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:02:22] [INFO ] [Real]Absence check using state equation in 16 ms returned sat
[2025-05-31 16:02:22] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:02:26] [INFO ] [Nat]Absence check using state equation in 4513 ms returned unknown
Current structural bounds on expressions (after SMT) : Max Seen:[2, 2, 2, 2, 2, 2, 2, 2] Max Struct:[+inf, +inf, +inf, 2, 2, +inf, 2, +inf]
FORMULA DNAwalker-PT-02track12Block2-UpperBounds-12 2 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA DNAwalker-PT-02track12Block2-UpperBounds-10 2 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA DNAwalker-PT-02track12Block2-UpperBounds-14 2 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA DNAwalker-PT-02track12Block2-UpperBounds-08 2 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA DNAwalker-PT-02track12Block2-UpperBounds-07 2 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA DNAwalker-PT-02track12Block2-UpperBounds-11 2 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA DNAwalker-PT-02track12Block2-UpperBounds-06 2 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[2, 2, 2, 2, 2] Max Struct:[+inf, +inf, +inf, +inf, +inf]
Support contains 5 out of 14 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 14/14 places, 80/80 transitions.
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 0 with 1 rules applied. Total rules applied 1 place count 13 transition count 79
Applied a total of 1 rules in 12 ms. Remains 13 /14 variables (removed 1) and now considering 79/80 (removed 1) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 13 ms. Remains : 13/14 places, 79/80 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
When looking for a positive semi flow solution, solver replied unsat
// Phase 1: matrix 79 rows 13 cols
[2025-05-31 16:02:26] [INFO ] Computed 0 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[2, 2, 2, 2, 2] Max Struct:[+inf, +inf, +inf, +inf, +inf]
RANDOM walk for 1000000 steps (119039 resets) in 1363 ms. (733 steps per ms)
BEST_FIRST walk for 5000005 steps (117204 resets) in 1937 ms. (2579 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2, 2, 2, 2, 2] Max Struct:[+inf, +inf, +inf, +inf, +inf]
[2025-05-31 16:02:30] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:02:30] [INFO ] [Real]Absence check using state equation in 13 ms returned sat
[2025-05-31 16:02:30] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:02:39] [INFO ] [Nat]Absence check using state equation in 9012 ms returned unknown
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:02:39] [INFO ] [Real]Absence check using state equation in 14 ms returned sat
[2025-05-31 16:02:39] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:02:45] [INFO ] [Nat]Absence check using state equation in 6361 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:02:45] [INFO ] [Real]Absence check using state equation in 15 ms returned sat
[2025-05-31 16:02:45] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:02:51] [INFO ] [Nat]Absence check using state equation in 6273 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:02:51] [INFO ] [Real]Absence check using state equation in 12 ms returned sat
[2025-05-31 16:02:51] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:03:00] [INFO ] [Nat]Absence check using state equation in 9011 ms returned unknown
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:03:00] [INFO ] [Real]Absence check using state equation in 12 ms returned sat
[2025-05-31 16:03:00] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:03:09] [INFO ] [Nat]Absence check using state equation in 8522 ms returned unsat
Current structural bounds on expressions (after SMT) : Max Seen:[2, 2, 2, 2, 2] Max Struct:[+inf, 2, 2, +inf, 2]
FORMULA DNAwalker-PT-02track12Block2-UpperBounds-15 2 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA DNAwalker-PT-02track12Block2-UpperBounds-03 2 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA DNAwalker-PT-02track12Block2-UpperBounds-04 2 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA DNAwalker-PT-02track12Block2-UpperBounds-02 2 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA DNAwalker-PT-02track12Block2-UpperBounds-01 2 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[2, 2] Max Struct:[+inf, +inf]
Support contains 2 out of 13 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 13/13 places, 79/79 transitions.
Graph (complete) has 79 edges and 13 vertex of which 11 are kept as prefixes of interest. Removing 2 places using SCC suffix rule.1 ms
Discarding 2 places :
Also discarding 0 output transitions
Drop transitions (Empty/Sink Transition effects.) removed 6 transitions
Reduce isomorphic transitions removed 6 transitions.
Iterating post reduction 0 with 6 rules applied. Total rules applied 7 place count 11 transition count 73
Reduce places removed 1 places and 1 transitions.
Iterating global reduction 1 with 1 rules applied. Total rules applied 8 place count 10 transition count 72
Applied a total of 8 rules in 15 ms. Remains 10 /13 variables (removed 3) and now considering 72/79 (removed 7) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 15 ms. Remains : 10/13 places, 72/79 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
When looking for a positive semi flow solution, solver replied unsat
// Phase 1: matrix 72 rows 10 cols
[2025-05-31 16:03:09] [INFO ] Computed 0 invariants in 1 ms
Current structural bounds on expressions (after invariants) : Max Seen:[2, 2] Max Struct:[+inf, +inf]
RANDOM walk for 1000000 steps (103791 resets) in 1171 ms. (853 steps per ms)
BEST_FIRST walk for 2000002 steps (45024 resets) in 726 ms. (2751 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2, 2] Max Struct:[+inf, +inf]
[2025-05-31 16:03:11] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:03:11] [INFO ] [Real]Absence check using state equation in 11 ms returned sat
[2025-05-31 16:03:11] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:03:18] [INFO ] [Nat]Absence check using state equation in 6484 ms returned unsat
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:03:18] [INFO ] [Real]Absence check using state equation in 8 ms returned sat
[2025-05-31 16:03:18] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:03:27] [INFO ] [Nat]Absence check using state equation in 9013 ms returned unknown
Current structural bounds on expressions (after SMT) : Max Seen:[2, 2] Max Struct:[2, +inf]
FORMULA DNAwalker-PT-02track12Block2-UpperBounds-13 2 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
FORMULA DNAwalker-PT-02track12Block2-UpperBounds-00 2 TECHNIQUES TOPOLOGICAL SAT_SMT RANDOM_WALK
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[2] Max Struct:[+inf]
Support contains 1 out of 10 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 10/10 places, 72/72 transitions.
Applied a total of 0 rules in 5 ms. Remains 10 /10 variables (removed 0) and now considering 72/72 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 5 ms. Remains : 10/10 places, 72/72 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
When looking for a positive semi flow solution, solver replied unsat
[2025-05-31 16:03:27] [INFO ] Invariant cache hit.
Current structural bounds on expressions (after invariants) : Max Seen:[2] Max Struct:[+inf]
RANDOM walk for 1000000 steps (103789 resets) in 1110 ms. (900 steps per ms)
BEST_FIRST walk for 1000001 steps (22499 resets) in 375 ms. (2659 steps per ms)
Current structural bounds on expressions (after WALK) : Max Seen:[2] Max Struct:[+inf]
[2025-05-31 16:03:28] [INFO ] Invariant cache hit.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:03:28] [INFO ] [Real]Absence check using state equation in 10 ms returned sat
[2025-05-31 16:03:28] [INFO ] Solution in real domain found non-integer solution.
Starting Z3 with timeout 45.0 s and query timeout 4500.0 ms
[2025-05-31 16:03:37] [INFO ] [Nat]Absence check using state equation in 9009 ms returned unknown
Current structural bounds on expressions (after SMT) : Max Seen:[2] Max Struct:[+inf]
Current structural bounds on expressions (After Parikh guided walk) : Max Seen:[2] Max Struct:[+inf]
Support contains 1 out of 10 places. Attempting structural reductions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 10/10 places, 72/72 transitions.
Applied a total of 0 rules in 6 ms. Remains 10 /10 variables (removed 0) and now considering 72/72 (removed 0) transitions.
Finished structural reductions in REACHABILITY mode , in 1 iterations and 6 ms. Remains : 10/10 places, 72/72 transitions.
Starting structural reductions in REACHABILITY mode, iteration 0 : 10/10 places, 72/72 transitions.
Applied a total of 0 rules in 5 ms. Remains 10 /10 variables (removed 0) and now considering 72/72 (removed 0) transitions.
[2025-05-31 16:03:37] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-05-31 16:03:37] [INFO ] Implicit Places using invariants in 31 ms returned []
[2025-05-31 16:03:37] [INFO ] Invariant cache hit.
Starting Z3 with timeout 160.0 s and query timeout 16000.0 ms
[2025-05-31 16:03:37] [INFO ] Implicit Places using invariants and state equation in 44 ms returned []
Implicit Place search using SMT with State Equation took 77 ms to find 0 implicit places.
Starting Z3 with timeout 200.0 s and query timeout 20000.0 ms
[2025-05-31 16:03:37] [INFO ] Redundant transitions in 1 ms returned []
Running 67 sub problems to find dead transitions.
[2025-05-31 16:03:37] [INFO ] Invariant cache hit.
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/10 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 67 unsolved
At refinement iteration 1 (OVERLAPS) 72/82 variables, 10/10 constraints. Problems are: Problem set: 0 solved, 67 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/82 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 67 unsolved
At refinement iteration 3 (OVERLAPS) 0/82 variables, 0/10 constraints. Problems are: Problem set: 0 solved, 67 unsolved
No progress, stopping.
After SMT solving in domain Real declared 82/82 variables, and 10 constraints, problems are : Problem set: 0 solved, 67 unsolved in 501 ms.
Refiners :[State Equation: 10/10 constraints, PredecessorRefiner: 67/67 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
Escalating to Integer solving :Problem set: 0 solved, 67 unsolved
Starting Z3 with timeout 30.0 s and query timeout 3000.0 ms
At refinement iteration 0 (INCLUDED_ONLY) 0/10 variables, 0/0 constraints. Problems are: Problem set: 0 solved, 67 unsolved
At refinement iteration 1 (OVERLAPS) 72/82 variables, 10/10 constraints. Problems are: Problem set: 0 solved, 67 unsolved
At refinement iteration 2 (INCLUDED_ONLY) 0/82 variables, 67/77 constraints. Problems are: Problem set: 0 solved, 67 unsolved
At refinement iteration 3 (INCLUDED_ONLY) 0/82 variables, 0/77 constraints. Problems are: Problem set: 0 solved, 67 unsolved
At refinement iteration 4 (OVERLAPS) 0/82 variables, 0/77 constraints. Problems are: Problem set: 0 solved, 67 unsolved
No progress, stopping.
After SMT solving in domain Int declared 82/82 variables, and 77 constraints, problems are : Problem set: 0 solved, 67 unsolved in 30010 ms.
Refiners :[State Equation: 10/10 constraints, PredecessorRefiner: 67/67 constraints, Known Traps: 0/0 constraints, Known Traps Along Path: 0/0 constraints]
After SMT, in 30532ms problems are : Problem set: 0 solved, 67 unsolved
Search for dead transitions found 0 dead transitions in 30533ms
Finished structural reductions in REACHABILITY mode , in 1 iterations and 30623 ms. Remains : 10/10 places, 72/72 transitions.
Starting Z3 with timeout 6000.0 s and query timeout 600000.0 ms
When looking for a positive semi flow solution, solver replied unsat
RANDOM walk for 40000 steps (4149 resets) in 487 ms. (81 steps per ms) remains 1/1 properties
BEST_FIRST walk for 40003 steps (899 resets) in 92 ms. (430 steps per ms) remains 1/1 properties
Probably explored full state space saw : 1936 states, properties seen :0
Probabilistic random walk after 8133 steps, saw 1936 distinct states, run finished after 33 ms. (steps per millisecond=246 ) properties seen :0
Explored full state space saw : 1936 states, properties seen :0
Exhaustive walk after 8133 steps, saw 1936 distinct states, run finished after 11 ms. (steps per millisecond=739 ) properties seen :0
[2025-05-31 16:04:08] [INFO ] Flatten gal took : 49 ms
[2025-05-31 16:04:08] [INFO ] Flatten gal took : 7 ms
[2025-05-31 16:04:08] [INFO ] Time to serialize gal into /tmp/ReachabilityCardinality3863441872492326283.gal : 5 ms
[2025-05-31 16:04:08] [INFO ] Time to serialize properties into /tmp/ReachabilityCardinality3498575393066907856.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/ReachabilityCardinality3863441872492326283.gal' '-t' 'CGAL' '-reachable-file' '/tmp/ReachabilityCardinality3498575393066907856.prop' '--nowitness' '--gen-order' 'FOLLOW'
ITS runner timed out or was interrupted.

ITS tools runner thread asked to quit. Dying gracefully.
java.io.IOException: Stream closed
at java.base/java.io.BufferedInputStream.ensureOpen(BufferedInputStream.java:206)
at java.base/java.io.BufferedInputStream.implRead(BufferedInputStream.java:411)
at java.base/java.io.BufferedInputStream.read(BufferedInputStream.java:405)
at java.base/sun.nio.cs.StreamDecoder.readBytes(StreamDecoder.java:350)
at java.base/sun.nio.cs.StreamDecoder.implRead(StreamDecoder.java:393)
at java.base/sun.nio.cs.StreamDecoder.lockedRead(StreamDecoder.java:217)
at java.base/sun.nio.cs.StreamDecoder.read(StreamDecoder.java:171)
at java.base/java.io.InputStreamReader.read(InputStreamReader.java:188)
at java.base/java.io.BufferedReader.fill(BufferedReader.java:160)
at java.base/java.io.BufferedReader.implReadLine(BufferedReader.java:370)
at java.base/java.io.BufferedReader.readLine(BufferedReader.java:347)
at java.base/java.io.BufferedReader.readLine(BufferedReader.java:436)
at fr.lip6.move.gal.application.runner.its.ITSRunner$ITSInterpreter.run(ITSRunner.java:211)
at java.base/java.lang.Thread.run(Thread.java:1583)
FORMULA DNAwalker-PT-02track12Block2-UpperBounds-09 2 TECHNIQUES REACHABILITY_MIN
Current structural bounds on expressions (After reachability solving 1 queries.) : Max Seen:[] Max Struct:[]
All properties solved without resorting to model-checking.
Total runtime 198637 ms.

BK_STOP 1748707448726

--------------------
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="DNAwalker-PT-02track12Block2"
export BK_EXAMINATION="UpperBounds"
export BK_TOOL="itstools"
export BK_RESULT_DIR="/tmp/BK_RESULTS/OUTPUTS"
export BK_TIME_CONFINEMENT="3600"
export BK_MEMORY_CONFINEMENT="16384"
export BK_BIN_PATH="/home/mcc/BenchKit/bin/"

# this is specific to your benchmark or test

export BIN_DIR="$HOME/BenchKit/bin"

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

# this is for BenchKit: explicit launching of the test
echo "====================================================================="
echo " Generated by BenchKit 2-5832"
echo " Executing tool itstools"
echo " Input is DNAwalker-PT-02track12Block2, 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 r072-tall-174860067300381"
echo "====================================================================="
echo
echo "--------------------"
echo "preparation of the directory to be used:"

tar xzf /home/mcc/BenchKit/INPUTS/DNAwalker-PT-02track12Block2.tgz
mv DNAwalker-PT-02track12Block2 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 ;