
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 12:22:41 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1248.26.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/grafo1248.26.lp
Reading time = 0.02 seconds
: 7015 rows, 461 columns, 21113 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 7015 rows, 461 columns and 21113 nonzeros
Model fingerprint: 0xc046b38b
Variable types: 12 continuous, 449 integer (449 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 3.0000000
Presolve removed 970 rows and 10 columns
Presolve time: 0.05s
Presolved: 6045 rows, 451 columns, 18307 nonzeros
Variable types: 0 continuous, 451 integer (439 binary)
Found heuristic solution: objective 4.0000000

Root relaxation: objective 8.000000e+00, 253 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    8.00000    0   63    4.00000    8.00000   100%     -    0s
H    0     0                       5.0000000    8.00000  60.0%     -    0s
     0     0    8.00000    0   53    5.00000    8.00000  60.0%     -    0s
     0     0    8.00000    0   52    5.00000    8.00000  60.0%     -    0s
     0     0    7.66667    0   31    5.00000    7.66667  53.3%     -    0s
     0     0    7.00000    0   37    5.00000    7.00000  40.0%     -    0s
     0     0    7.00000    0   38    5.00000    7.00000  40.0%     -    0s
     0     0    7.00000    0   24    5.00000    7.00000  40.0%     -    0s
H    0     0                       6.0000000    7.00000  16.7%     -    0s
     0     0    7.00000    0   41    6.00000    7.00000  16.7%     -    0s
     0     0    7.00000    0   43    6.00000    7.00000  16.7%     -    0s
     0     0    7.00000    0   42    6.00000    7.00000  16.7%     -    0s
     0     0    7.00000    0   40    6.00000    7.00000  16.7%     -    0s
     0     0    7.00000    0   39    6.00000    7.00000  16.7%     -    0s
     0     0    7.00000    0   41    6.00000    7.00000  16.7%     -    0s
     0     0    7.00000    0   39    6.00000    7.00000  16.7%     -    0s
     0     0    7.00000    0   39    6.00000    7.00000  16.7%     -    0s
     0     0    7.00000    0   26    6.00000    7.00000  16.7%     -    0s
     0     2    7.00000    0   16    6.00000    7.00000  16.7%     -    1s

Cutting planes:
  Cover: 26
  Clique: 1
  MIR: 33
  GUB cover: 1
  Inf proof: 54
  Zero half: 16
  RLT: 13

Explored 1075 nodes (38423 simplex iterations) in 2.68 seconds (2.04 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 6 5 4 3 

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/grafo1248.26.sol'

