
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 07:58:14 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo863.18.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/grafo863.18.lp
Reading time = 0.01 seconds
: 5160 rows, 384 columns, 15666 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 5160 rows, 384 columns and 15666 nonzeros
Model fingerprint: 0xf5145dba
Variable types: 18 continuous, 366 integer (366 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 4.0000000
Presolve removed 1150 rows and 10 columns
Presolve time: 0.04s
Presolved: 4010 rows, 374 columns, 12300 nonzeros
Variable types: 0 continuous, 374 integer (356 binary)

Root relaxation: objective 1.200000e+01, 196 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   12.00000    0   35    4.00000   12.00000   200%     -    0s
H    0     0                       6.0000000   12.00000   100%     -    0s
H    0     0                       7.0000000   12.00000  71.4%     -    0s
H    0     0                       8.0000000   12.00000  50.0%     -    0s
     0     0   12.00000    0   42    8.00000   12.00000  50.0%     -    0s
     0     0   11.66667    0   42    8.00000   11.66667  45.8%     -    0s
     0     0   11.66667    0   46    8.00000   11.66667  45.8%     -    0s
     0     0   11.00000    0   55    8.00000   11.00000  37.5%     -    0s
     0     0   11.00000    0   39    8.00000   11.00000  37.5%     -    0s
     0     0   10.66667    0   58    8.00000   10.66667  33.3%     -    0s
     0     0   10.66667    0   53    8.00000   10.66667  33.3%     -    0s
     0     0   10.50000    0   55    8.00000   10.50000  31.3%     -    0s
     0     0   10.00000    0   57    8.00000   10.00000  25.0%     -    0s
     0     0   10.00000    0   45    8.00000   10.00000  25.0%     -    1s
     0     0   10.00000    0   45    8.00000   10.00000  25.0%     -    1s
     0     2   10.00000    0   36    8.00000   10.00000  25.0%     -    1s

Cutting planes:
  Cover: 14
  MIR: 58
  StrongCG: 1
  GUB cover: 1
  Inf proof: 24
  Zero half: 11
  RLT: 28

Explored 891 nodes (26502 simplex iterations) in 3.09 seconds (1.47 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 8 7 6 4 

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/grafo863.18.sol'

