
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 05:58:32 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo471.18.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/grafo471.18.lp
Reading time = 0.01 seconds
: 2566 rows, 240 columns, 7713 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 2566 rows, 240 columns and 7713 nonzeros
Model fingerprint: 0x7e695a56
Variable types: 9 continuous, 231 integer (231 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 2.0000000
Presolve removed 476 rows and 4 columns
Presolve time: 0.03s
Presolved: 2090 rows, 236 columns, 6324 nonzeros
Variable types: 0 continuous, 236 integer (227 binary)

Root relaxation: objective 9.000000e+00, 96 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    9.00000    0   41    2.00000    9.00000   350%     -    0s
H    0     0                       3.0000000    9.00000   200%     -    0s
H    0     0                       4.0000000    9.00000   125%     -    0s
     0     0    9.00000    0   54    4.00000    9.00000   125%     -    0s
     0     0    9.00000    0   49    4.00000    9.00000   125%     -    0s
     0     0    9.00000    0   51    4.00000    9.00000   125%     -    0s
H    0     0                       5.0000000    9.00000  80.0%     -    0s
     0     0    9.00000    0   50    5.00000    9.00000  80.0%     -    0s
     0     0    8.50000    0   57    5.00000    8.50000  70.0%     -    0s
     0     0    8.50000    0   54    5.00000    8.50000  70.0%     -    0s
     0     0    8.00000    0   43    5.00000    8.00000  60.0%     -    0s
     0     0    8.00000    0   44    5.00000    8.00000  60.0%     -    0s
     0     0    8.00000    0   44    5.00000    8.00000  60.0%     -    0s
     0     0    8.00000    0   39    5.00000    8.00000  60.0%     -    0s
     0     0    8.00000    0   39    5.00000    8.00000  60.0%     -    0s
     0     2    8.00000    0   39    5.00000    8.00000  60.0%     -    0s

Cutting planes:
  Gomory: 3
  Cover: 18
  Clique: 2
  MIR: 44
  Inf proof: 36
  Zero half: 8
  RLT: 21

Explored 1787 nodes (39342 simplex iterations) in 2.18 seconds (1.02 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 5 4 3 2 

Optimal solution found (tolerance 1.00e-04)
Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0000%

Wrote result file './lp_solutions/grafo471.18.sol'

