
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 14:15:17 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2128.19.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/grafo2128.19.lp
Reading time = 0.01 seconds
: 4742 rows, 307 columns, 14294 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 4742 rows, 307 columns and 14294 nonzeros
Model fingerprint: 0xc48e1352
Variable types: 12 continuous, 295 integer (295 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 1367 rows and 4 columns
Presolve time: 0.03s
Presolved: 3375 rows, 303 columns, 10287 nonzeros
Variable types: 0 continuous, 303 integer (291 binary)
Found heuristic solution: objective 4.0000000

Root relaxation: objective 8.000000e+00, 209 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    8.00000    0   19    4.00000    8.00000   100%     -    0s
     0     0    8.00000    0   67    4.00000    8.00000   100%     -    0s
     0     0    8.00000    0   63    4.00000    8.00000   100%     -    0s
     0     0    8.00000    0   51    4.00000    8.00000   100%     -    0s
     0     0    8.00000    0   39    4.00000    8.00000   100%     -    0s
     0     0    8.00000    0   74    4.00000    8.00000   100%     -    0s
     0     0    8.00000    0   70    4.00000    8.00000   100%     -    0s
     0     0    7.75000    0   61    4.00000    7.75000  93.8%     -    0s
     0     0    7.66667    0   82    4.00000    7.66667  91.7%     -    0s
     0     0    7.50000    0   58    4.00000    7.50000  87.5%     -    0s
     0     0    7.50000    0   61    4.00000    7.50000  87.5%     -    0s
     0     0    7.50000    0   52    4.00000    7.50000  87.5%     -    0s
     0     0    7.50000    0   49    4.00000    7.50000  87.5%     -    0s
     0     2    7.50000    0   35    4.00000    7.50000  87.5%     -    0s
*  350   228              36       5.0000000    7.50000  50.0%  40.9    1s
*  435   229              34       6.0000000    7.50000  25.0%  39.8    1s

Cutting planes:
  Cover: 15
  Clique: 5
  MIR: 52
  StrongCG: 3
  Inf proof: 41
  Zero half: 15
  RLT: 35
  BQP: 2

Explored 1842 nodes (69382 simplex iterations) in 2.19 seconds (2.16 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 6 5 4 2 

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/grafo2128.19.sol'

