
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 06:18:19 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo538.18.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/grafo538.18.lp
Reading time = 0.01 seconds
: 2898 rows, 300 columns, 8776 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 2898 rows, 300 columns and 8776 nonzeros
Model fingerprint: 0x0e806571
Variable types: 14 continuous, 286 integer (286 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 340 rows and 13 columns
Presolve time: 0.04s
Presolved: 2558 rows, 287 columns, 7846 nonzeros
Variable types: 0 continuous, 287 integer (273 binary)

Root relaxation: objective 8.000000e+00, 286 iterations, 0.02 seconds (0.01 work units)

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

     0     0    8.00000    0   61          -    8.00000      -     -    0s
H    0     0                       3.0000000    8.00000   167%     -    0s
H    0     0                       4.0000000    8.00000   100%     -    0s
     0     0    8.00000    0   56    4.00000    8.00000   100%     -    0s
H    0     0                       5.0000000    8.00000  60.0%     -    0s
     0     0    8.00000    0   22    5.00000    8.00000  60.0%     -    0s
     0     0    8.00000    0   14    5.00000    8.00000  60.0%     -    0s
H    0     0                       6.0000000    8.00000  33.3%     -    0s
     0     0    8.00000    0   23    6.00000    8.00000  33.3%     -    0s
     0     0    8.00000    0   22    6.00000    8.00000  33.3%     -    0s
     0     0    7.66667    0   28    6.00000    7.66667  27.8%     -    0s
     0     0    7.66667    0   29    6.00000    7.66667  27.8%     -    0s
     0     0    7.50000    0   30    6.00000    7.50000  25.0%     -    0s
     0     0    7.50000    0   29    6.00000    7.50000  25.0%     -    0s
     0     0    7.50000    0   22    6.00000    7.50000  25.0%     -    0s
     0     0    7.50000    0   28    6.00000    7.50000  25.0%     -    0s
     0     0    7.50000    0   30    6.00000    7.50000  25.0%     -    0s
     0     0    7.50000    0   30    6.00000    7.50000  25.0%     -    0s
     0     2    7.50000    0   22    6.00000    7.50000  25.0%     -    0s

Cutting planes:
  Cover: 7
  MIR: 22
  Inf proof: 5
  Zero half: 1
  RLT: 11

Explored 233 nodes (8733 simplex iterations) in 1.27 seconds (0.52 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 6 5 4 3 

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/grafo538.18.sol'

