
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 02:19:16 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo855.15.log"
Using license file /Users/sara/gurobi.lic
Academic license - for non-commercial use only - expires 2025-05-12

Gurobi Optimizer version 11.0.1 build v11.0.1rc0 (mac64[x86] - Darwin 21.6.0 21G651)
Copyright (c) 2024, Gurobi Optimization, LLC

Read LP format model from file ./lp_problems/grafo855.15.lp
Reading time = 0.01 seconds
: 2445 rows, 283 columns, 7438 nonzeros

CPU model: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
Thread count: 4 physical cores, 8 logical processors, using up to 8 threads

Optimize a model with 2445 rows, 283 columns and 7438 nonzeros
Model fingerprint: 0x857e1e0d
Variable types: 16 continuous, 267 integer (267 binary)
Coefficient statistics:
  Matrix range     [5e-01, 5e+01]
  Objective range  [1e+00, 1e+00]
  Bounds range     [1e+00, 1e+00]
  RHS range        [1e+00, 5e+01]
Presolve removed 296 rows and 15 columns
Presolve time: 0.03s
Presolved: 2149 rows, 268 columns, 6673 nonzeros
Variable types: 0 continuous, 268 integer (252 binary)
Found heuristic solution: objective 2.0000000
Found heuristic solution: objective 3.0000000

Root relaxation: objective 7.000000e+00, 121 iterations, 0.01 seconds (0.00 work units)

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0    7.00000    0    9    3.00000    7.00000   133%     -    0s
H    0     0                       6.0000000    7.00000  16.7%     -    0s
     0     0    7.00000    0   47    6.00000    7.00000  16.7%     -    0s
     0     0    7.00000    0   47    6.00000    7.00000  16.7%     -    0s
     0     0    7.00000    0   41    6.00000    7.00000  16.7%     -    0s
     0     0    7.00000    0   19    6.00000    7.00000  16.7%     -    0s
     0     0    7.00000    0   47    6.00000    7.00000  16.7%     -    0s
     0     0    7.00000    0   47    6.00000    7.00000  16.7%     -    0s
     0     0    7.00000    0   31    6.00000    7.00000  16.7%     -    0s
     0     0    7.00000    0   31    6.00000    7.00000  16.7%     -    0s
     0     2    7.00000    0   31    6.00000    7.00000  16.7%     -    0s
    26    22    7.00000   16   14    6.00000    7.00000  16.7%   255    5s
   519   243    7.00000   32   54    6.00000    7.00000  16.7%   105   10s
  1294   372    7.00000   26   61    6.00000    7.00000  16.7%   104   15s
  2559   439 infeasible   35         6.00000    7.00000  16.7%   105   21s
  3662   462    7.00000   32   22    6.00000    7.00000  16.7%   105   26s
  4818   388    7.00000   26   68    6.00000    7.00000  16.7%   107   32s
  5127   385    7.00000   27   75    6.00000    7.00000  16.7%   107   36s
  5959   281 infeasible   26         6.00000    7.00000  16.7%   111   41s
  7101   117    7.00000   24  100    6.00000    7.00000  16.7%   112   45s

Cutting planes:
  Gomory: 3
  Lift-and-project: 1
  Clique: 2
  MIR: 2
  Flow cover: 6
  RLT: 1

Explored 8255 nodes (917927 simplex iterations) in 48.91 seconds (18.68 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 6 3 2 

Optimal solution found (tolerance 1.00e-04)
Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0000%

Wrote result file './lp_solutions/grafo855.15.sol'

