
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 05:09:46 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2820.14.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/grafo2820.14.lp
Reading time = 0.01 seconds
: 3599 rows, 223 columns, 10836 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 3599 rows, 223 columns and 10836 nonzeros
Model fingerprint: 0xe350c5ac
Variable types: 12 continuous, 211 integer (211 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 1544 rows and 9 columns
Presolve time: 0.04s
Presolved: 2055 rows, 214 columns, 6285 nonzeros
Variable types: 0 continuous, 214 integer (202 binary)
Found heuristic solution: objective 3.0000000

Root relaxation: objective 1.100000e+01, 165 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   11.00000    0   51    3.00000   11.00000   267%     -    0s
H    0     0                       5.0000000   11.00000   120%     -    0s
     0     0   11.00000    0   81    5.00000   11.00000   120%     -    0s
H    0     0                       6.0000000   11.00000  83.3%     -    0s
     0     0   11.00000    0   73    6.00000   11.00000  83.3%     -    0s
     0     0   11.00000    0   74    6.00000   11.00000  83.3%     -    0s
     0     0   10.50000    0   68    6.00000   10.50000  75.0%     -    0s
     0     0   10.50000    0   71    6.00000   10.50000  75.0%     -    0s
     0     0   10.00000    0   73    6.00000   10.00000  66.7%     -    0s
     0     0   10.00000    0   70    6.00000   10.00000  66.7%     -    0s
     0     0   10.00000    0   68    6.00000   10.00000  66.7%     -    0s
     0     0   10.00000    0   67    6.00000   10.00000  66.7%     -    0s
     0     2   10.00000    0   65    6.00000   10.00000  66.7%     -    0s

Cutting planes:
  Cover: 19
  Clique: 2
  MIR: 80
  StrongCG: 2
  GUB cover: 1
  Inf proof: 32
  Zero half: 7
  RLT: 27

Explored 1910 nodes (52359 simplex iterations) in 2.96 seconds (1.59 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 6 5 3 -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/grafo2820.14.sol'

