
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 19:00:38 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2556.18.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/grafo2556.18.lp
Reading time = 0.02 seconds
: 8862 rows, 388 columns, 26776 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 8862 rows, 388 columns and 26776 nonzeros
Model fingerprint: 0xa4bb80f3
Variable types: 16 continuous, 372 integer (372 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 4.0000000
Presolve removed 4027 rows and 1 columns
Presolve time: 0.05s
Presolved: 4835 rows, 387 columns, 14857 nonzeros
Variable types: 0 continuous, 387 integer (371 binary)
Found heuristic solution: objective 5.0000000

Root relaxation: objective 1.000000e+01, 195 iterations, 0.02 seconds (0.02 work units)

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

     0     0   10.00000    0   30    5.00000   10.00000   100%     -    0s
H    0     0                       7.0000000   10.00000  42.9%     -    0s
     0     0   10.00000    0   58    7.00000   10.00000  42.9%     -    0s
     0     0   10.00000    0   25    7.00000   10.00000  42.9%     -    0s
     0     0   10.00000    0   44    7.00000   10.00000  42.9%     -    0s
     0     0   10.00000    0   57    7.00000   10.00000  42.9%     -    0s
     0     0   10.00000    0   49    7.00000   10.00000  42.9%     -    0s
     0     0   10.00000    0   64    7.00000   10.00000  42.9%     -    0s
     0     0   10.00000    0   59    7.00000   10.00000  42.9%     -    0s
     0     0   10.00000    0   57    7.00000   10.00000  42.9%     -    0s
     0     0   10.00000    0   59    7.00000   10.00000  42.9%     -    0s
     0     0   10.00000    0   44    7.00000   10.00000  42.9%     -    0s
     0     0   10.00000    0   42    7.00000   10.00000  42.9%     -    0s
H    0     0                       8.0000000   10.00000  25.0%     -    0s
     0     0   10.00000    0   39    8.00000   10.00000  25.0%     -    0s
     0     0   10.00000    0   39    8.00000   10.00000  25.0%     -    1s
     0     2   10.00000    0   39    8.00000   10.00000  25.0%     -    1s

Cutting planes:
  Cover: 31
  Clique: 10
  MIR: 45
  StrongCG: 4
  Inf proof: 4
  Zero half: 3
  RLT: 29
  BQP: 1

Explored 2453 nodes (91443 simplex iterations) in 4.48 seconds (4.63 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 8 7 5 4 

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/grafo2556.18.sol'

