
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 05:12:11 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2837.25.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/grafo2837.25.lp
Reading time = 0.01 seconds
: 6630 rows, 513 columns, 20047 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 6630 rows, 513 columns and 20047 nonzeros
Model fingerprint: 0x8407cc88
Variable types: 17 continuous, 496 integer (496 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 414 rows and 13 columns
Presolve time: 0.05s
Presolved: 6216 rows, 500 columns, 18904 nonzeros
Variable types: 0 continuous, 500 integer (483 binary)

Root relaxation: objective 1.200000e+01, 273 iterations, 0.03 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   33          -   12.00000      -     -    0s
H    0     0                       2.0000000   12.00000   500%     -    0s
H    0     0                       6.0000000   12.00000   100%     -    0s
     0     0   12.00000    0  113    6.00000   12.00000   100%     -    0s
     0     0   12.00000    0   58    6.00000   12.00000   100%     -    0s
     0     0   12.00000    0   58    6.00000   12.00000   100%     -    0s
     0     0   12.00000    0   66    6.00000   12.00000   100%     -    0s
     0     0   12.00000    0   64    6.00000   12.00000   100%     -    0s
     0     0   12.00000    0   54    6.00000   12.00000   100%     -    0s
     0     0   12.00000    0   46    6.00000   12.00000   100%     -    1s
H    0     0                       7.0000000   12.00000  71.4%     -    1s
     0     0   12.00000    0   45    7.00000   12.00000  71.4%     -    1s
     0     0   11.50000    0   48    7.00000   11.50000  64.3%     -    1s
     0     0   11.50000    0   61    7.00000   11.50000  64.3%     -    1s
     0     0   11.50000    0   43    7.00000   11.50000  64.3%     -    1s
     0     2   11.50000    0   42    7.00000   11.50000  64.3%     -    1s
*  346   147              30       8.0000000   11.50000  43.8%  49.3    3s
   941   249 infeasible   12         8.00000   11.00000  37.5%  49.5    5s
  2540   253     cutoff   21         8.00000   10.00000  25.0%  59.0   10s

Cutting planes:
  Gomory: 4
  Cover: 33
  MIR: 33
  StrongCG: 2
  GUB cover: 1
  Inf proof: 60
  Zero half: 2
  RLT: 18

Explored 3202 nodes (189340 simplex iterations) in 11.31 seconds (7.20 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 8 7 6 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/grafo2837.25.sol'

