
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 16:59:56 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo588.19.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/grafo588.19.lp
Reading time = 0.01 seconds
: 4775 rows, 394 columns, 14493 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 4775 rows, 394 columns and 14493 nonzeros
Model fingerprint: 0x7b322835
Variable types: 17 continuous, 377 integer (377 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 1045 rows and 17 columns
Presolve time: 0.04s
Presolved: 3730 rows, 377 columns, 11516 nonzeros
Variable types: 0 continuous, 377 integer (360 binary)
Found heuristic solution: objective 5.0000000

Root relaxation: objective 1.000000e+01, 180 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   10.00000    0   53    5.00000   10.00000   100%     -    0s
     0     0   10.00000    0   76    5.00000   10.00000   100%     -    0s
H    0     0                       7.0000000   10.00000  42.9%     -    0s
     0     0   10.00000    0   24    7.00000   10.00000  42.9%     -    0s
     0     0    9.66667    0   27    7.00000    9.66667  38.1%     -    0s
     0     0    9.00000    0   45    7.00000    9.00000  28.6%     -    0s
     0     0    9.00000    0   48    7.00000    9.00000  28.6%     -    0s
     0     0    9.00000    0   31    7.00000    9.00000  28.6%     -    0s
     0     0    9.00000    0   53    7.00000    9.00000  28.6%     -    0s
     0     0    9.00000    0   39    7.00000    9.00000  28.6%     -    0s
H    0     0                       8.0000000    9.00000  12.5%     -    0s
     0     0    9.00000    0   55    8.00000    9.00000  12.5%     -    0s
     0     0    9.00000    0   59    8.00000    9.00000  12.5%     -    0s
     0     0    9.00000    0   69    8.00000    9.00000  12.5%     -    0s
     0     0    9.00000    0   21    8.00000    9.00000  12.5%     -    0s
     0     0    9.00000    0   21    8.00000    9.00000  12.5%     -    0s
     0     2    9.00000    0   17    8.00000    9.00000  12.5%     -    0s

Cutting planes:
  Gomory: 1
  Cover: 21
  MIR: 34
  StrongCG: 3
  GUB cover: 1
  Inf proof: 57
  Zero half: 3
  RLT: 20

Explored 972 nodes (42595 simplex iterations) in 2.02 seconds (1.62 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 8 7 5 2 

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/grafo588.19.sol'

