
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 05:30:11 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo304.15.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/grafo304.15.lp
Reading time = 0.01 seconds
: 2547 rows, 258 columns, 7708 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 2547 rows, 258 columns and 7708 nonzeros
Model fingerprint: 0xdca07665
Variable types: 14 continuous, 244 integer (244 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 -0.0000000
Presolve removed 616 rows and 15 columns
Presolve time: 0.02s
Presolved: 1931 rows, 243 columns, 5977 nonzeros
Variable types: 0 continuous, 243 integer (229 binary)
Found heuristic solution: objective 1.0000000

Root relaxation: objective 9.000000e+00, 240 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    9.00000    0   70    1.00000    9.00000   800%     -    0s
H    0     0                       4.0000000    9.00000   125%     -    0s
     0     0    9.00000    0  100    4.00000    9.00000   125%     -    0s
     0     0    8.50000    0   21    4.00000    8.50000   113%     -    0s
H    0     0                       5.0000000    8.50000  70.0%     -    0s
H    0     0                       6.0000000    8.50000  41.7%     -    0s
     0     0    8.50000    0   20    6.00000    8.50000  41.7%     -    0s
     0     0    8.00000    0   52    6.00000    8.00000  33.3%     -    0s
     0     0    8.00000    0   48    6.00000    8.00000  33.3%     -    0s
     0     0    8.00000    0   28    6.00000    8.00000  33.3%     -    0s
     0     0    8.00000    0   27    6.00000    8.00000  33.3%     -    0s
     0     0    8.00000    0   32    6.00000    8.00000  33.3%     -    0s
     0     0    7.83333    0   32    6.00000    7.83333  30.6%     -    0s
     0     0    7.66667    0   40    6.00000    7.66667  27.8%     -    0s
     0     0    7.66667    0   39    6.00000    7.66667  27.8%     -    0s
     0     2    7.66667    0   31    6.00000    7.66667  27.8%     -    0s

Cutting planes:
  Cover: 9
  MIR: 47
  StrongCG: 1
  Inf proof: 24
  Zero half: 5
  RLT: 18

Explored 837 nodes (38146 simplex iterations) in 2.04 seconds (1.05 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 6 5 4 ... -0

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/grafo304.15.sol'

