
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 05:21:35 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2943.21.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/grafo2943.21.lp
Reading time = 0.02 seconds
: 7854 rows, 513 columns, 23826 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 7854 rows, 513 columns and 23826 nonzeros
Model fingerprint: 0x94bba3f6
Variable types: 21 continuous, 492 integer (492 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 1.0000000
Presolve removed 1602 rows and 18 columns
Presolve time: 0.07s
Presolved: 6252 rows, 495 columns, 19164 nonzeros
Variable types: 0 continuous, 495 integer (474 binary)
Found heuristic solution: objective 5.0000000

Root relaxation: objective 1.400000e+01, 107 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   14.00000    0   60    5.00000   14.00000   180%     -    0s
H    0     0                       6.0000000   14.00000   133%     -    0s
     0     0   14.00000    0  135    6.00000   14.00000   133%     -    0s
     0     0   14.00000    0  131    6.00000   14.00000   133%     -    0s
     0     0   13.66667    0   81    6.00000   13.66667   128%     -    0s
     0     0   13.66667    0   51    6.00000   13.66667   128%     -    0s
     0     0   13.33333    0   64    6.00000   13.33333   122%     -    1s
     0     0   13.16667    0   60    6.00000   13.16667   119%     -    1s
     0     0   13.00000    0   70    6.00000   13.00000   117%     -    1s
H    0     0                       7.0000000   13.00000  85.7%     -    1s
H    0     0                       8.0000000   13.00000  62.5%     -    1s
     0     0   13.00000    0   69    8.00000   13.00000  62.5%     -    1s
     0     0   13.00000    0   68    8.00000   13.00000  62.5%     -    1s
     0     0   13.00000    0   48    8.00000   13.00000  62.5%     -    2s
H    0     0                       9.0000000   13.00000  44.4%     -    2s
     0     2   13.00000    0   41    9.00000   13.00000  44.4%     -    2s
   783   234     cutoff   19         9.00000   12.00000  33.3%  32.2    5s

Cutting planes:
  Gomory: 6
  Cover: 27
  MIR: 93
  StrongCG: 4
  GUB cover: 1
  Inf proof: 31
  Zero half: 13
  RLT: 45

Explored 2417 nodes (93715 simplex iterations) in 9.07 seconds (5.42 work units)
Thread count was 8 (of 8 available processors)

Solution count 6: 9 8 7 ... 1

Optimal solution found (tolerance 1.00e-04)
Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0000%

Wrote result file './lp_solutions/grafo2943.21.sol'

