
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 05:40:00 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo336.21.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/grafo336.21.lp
Reading time = 0.01 seconds
: 4690 rows, 423 columns, 14224 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 4690 rows, 423 columns and 14224 nonzeros
Model fingerprint: 0x255a5d06
Variable types: 17 continuous, 406 integer (406 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]
Presolve removed 415 rows and 14 columns
Presolve time: 0.04s
Presolved: 4275 rows, 409 columns, 13081 nonzeros
Variable types: 0 continuous, 409 integer (392 binary)
Found heuristic solution: objective 3.0000000

Root relaxation: objective 1.200000e+01, 300 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   12.00000    0   34    3.00000   12.00000   300%     -    0s
H    0     0                       5.0000000   12.00000   140%     -    0s
H    0     0                       6.0000000   12.00000   100%     -    0s
     0     0   12.00000    0  101    6.00000   12.00000   100%     -    0s
     0     0   12.00000    0   31    6.00000   12.00000   100%     -    0s
H    0     0                       7.0000000   12.00000  71.4%     -    0s
     0     0   11.50000    0   28    7.00000   11.50000  64.3%     -    0s
     0     0   11.50000    0   40    7.00000   11.50000  64.3%     -    0s
     0     0   11.00000    0   21    7.00000   11.00000  57.1%     -    0s
     0     0   11.00000    0   44    7.00000   11.00000  57.1%     -    0s
     0     0   11.00000    0   27    7.00000   11.00000  57.1%     -    0s
H    0     0                       8.0000000   11.00000  37.5%     -    0s
     0     0   11.00000    0   29    8.00000   11.00000  37.5%     -    0s
     0     0   11.00000    0   68    8.00000   11.00000  37.5%     -    0s
     0     0   11.00000    0   70    8.00000   11.00000  37.5%     -    0s
     0     0   11.00000    0   36    8.00000   11.00000  37.5%     -    1s
     0     0   11.00000    0   41    8.00000   11.00000  37.5%     -    1s
     0     0   11.00000    0   50    8.00000   11.00000  37.5%     -    1s
     0     0   11.00000    0   50    8.00000   11.00000  37.5%     -    1s
     0     2   11.00000    0   22    8.00000   11.00000  37.5%     -    1s

Cutting planes:
  Gomory: 1
  Cover: 20
  Clique: 2
  MIR: 52
  StrongCG: 2
  GUB cover: 1
  Inf proof: 51
  Zero half: 1
  RLT: 19

Explored 1009 nodes (44441 simplex iterations) in 3.61 seconds (1.91 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 8 7 6 ... 3

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/grafo336.21.sol'

