
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 05:01:22 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2671.24.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/grafo2671.24.lp
Reading time = 0.02 seconds
: 7388 rows, 513 columns, 22335 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 7388 rows, 513 columns and 22335 nonzeros
Model fingerprint: 0x6a7c8222
Variable types: 18 continuous, 495 integer (495 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]
Found heuristic solution: objective 1.0000000
Presolve removed 1116 rows and 15 columns
Presolve time: 0.07s
Presolved: 6272 rows, 498 columns, 19110 nonzeros
Variable types: 0 continuous, 498 integer (480 binary)
Found heuristic solution: objective 2.0000000

Root relaxation: objective 1.300000e+01, 224 iterations, 0.03 seconds (0.02 work units)

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

     0     0   13.00000    0   90    2.00000   13.00000   550%     -    0s
H    0     0                       3.0000000   13.00000   333%     -    0s
H    0     0                       4.0000000   13.00000   225%     -    0s
     0     0   13.00000    0  127    4.00000   13.00000   225%     -    0s
H    0     0                       5.0000000   13.00000   160%     -    0s
     0     0   13.00000    0   96    5.00000   13.00000   160%     -    0s
     0     0   13.00000    0   94    5.00000   13.00000   160%     -    0s
     0     0   12.66667    0   56    5.00000   12.66667   153%     -    1s
     0     0   12.66667    0   63    5.00000   12.66667   153%     -    1s
     0     0   12.66667    0   87    5.00000   12.66667   153%     -    1s
     0     0   12.66667    0   84    5.00000   12.66667   153%     -    1s
H    0     0                       6.0000000   12.50000   108%     -    1s
     0     0   12.50000    0  107    6.00000   12.50000   108%     -    1s
     0     0   12.33333    0  103    6.00000   12.33333   106%     -    1s
H    0     0                       8.0000000   12.16667  52.1%     -    2s
     0     0   12.16667    0  115    8.00000   12.16667  52.1%     -    2s
     0     0   12.16667    0   90    8.00000   12.16667  52.1%     -    2s
     0     0   12.16667    0   64    8.00000   12.16667  52.1%     -    2s
     0     0   12.16667    0   64    8.00000   12.16667  52.1%     -    2s
     0     2   12.16667    0   64    8.00000   12.16667  52.1%     -    2s
   485   291     cutoff   21         8.00000   12.16667  52.1%  55.4    5s
  2282   595     cutoff   14         8.00000   10.75000  34.4%  42.7   10s

Cutting planes:
  Gomory: 1
  Cover: 13
  MIR: 169
  StrongCG: 3
  GUB cover: 7
  Inf proof: 36
  Zero half: 11
  RLT: 47
  Relax-and-lift: 1

Explored 4594 nodes (191101 simplex iterations) in 13.68 seconds (9.03 work units)
Thread count was 8 (of 8 available processors)

Solution count 7: 8 6 5 ... 1

Optimal solution found (tolerance 1.00e-04)
Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0000%

Wrote result file './lp_solutions/grafo2671.24.sol'

