
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 15:45:47 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1892.23.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/grafo1892.23.lp
Reading time = 0.01 seconds
: 7435 rows, 437 columns, 22432 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 7435 rows, 437 columns and 22432 nonzeros
Model fingerprint: 0xa3ce72c0
Variable types: 13 continuous, 424 integer (424 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 2892 rows and 36 columns
Presolve time: 0.04s
Presolved: 4543 rows, 401 columns, 13867 nonzeros
Variable types: 0 continuous, 401 integer (388 binary)
Found heuristic solution: objective 5.0000000

Root relaxation: objective 9.000000e+00, 187 iterations, 0.01 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   69    5.00000    9.00000  80.0%     -    0s
     0     0    9.00000    0   72    5.00000    9.00000  80.0%     -    0s
     0     0    9.00000    0   63    5.00000    9.00000  80.0%     -    0s
     0     0    9.00000    0   33    5.00000    9.00000  80.0%     -    0s
     0     0    8.83333    0   27    5.00000    8.83333  76.7%     -    0s
H    0     0                       6.0000000    8.83333  47.2%     -    0s
H    0     0                       7.0000000    8.83333  26.2%     -    0s
     0     0    8.66667    0   23    7.00000    8.66667  23.8%     -    0s
     0     0    8.00000    0   38    7.00000    8.00000  14.3%     -    0s
     0     0    8.00000    0   34    7.00000    8.00000  14.3%     -    0s
     0     0    8.00000    0   29    7.00000    8.00000  14.3%     -    0s
     0     0    8.00000    0   28    7.00000    8.00000  14.3%     -    0s
     0     0    8.00000    0   38    7.00000    8.00000  14.3%     -    0s
     0     0    8.00000    0   33    7.00000    8.00000  14.3%     -    0s
     0     0    8.00000    0   45    7.00000    8.00000  14.3%     -    0s
     0     0    8.00000    0   42    7.00000    8.00000  14.3%     -    0s
     0     0    8.00000    0   63    7.00000    8.00000  14.3%     -    0s
     0     0    8.00000    0   63    7.00000    8.00000  14.3%     -    0s
     0     2    8.00000    0   36    7.00000    8.00000  14.3%     -    0s

Cutting planes:
  Gomory: 2
  Cover: 45
  MIR: 37
  StrongCG: 2
  Inf proof: 73
  Zero half: 6
  RLT: 32

Explored 1665 nodes (73609 simplex iterations) in 3.04 seconds (2.57 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 7 6 5 

Optimal solution found (tolerance 1.00e-04)
Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0000%

Wrote result file './lp_solutions/grafo1892.23.sol'

