
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 05:57:39 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo457.12.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/grafo457.12.lp
Reading time = 0.01 seconds
: 1720 rows, 186 columns, 5196 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 1720 rows, 186 columns and 5196 nonzeros
Model fingerprint: 0x7a3ea9b2
Variable types: 12 continuous, 174 integer (174 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 -0.0000000
Presolve removed 562 rows and 12 columns
Presolve time: 0.02s
Presolved: 1158 rows, 174 columns, 3606 nonzeros
Variable types: 0 continuous, 174 integer (162 binary)

Root relaxation: objective 8.000000e+00, 151 iterations, 0.01 seconds (0.01 work units)

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0    8.00000    0   34   -0.00000    8.00000      -     -    0s
H    0     0                       1.0000000    8.00000   700%     -    0s
H    0     0                       2.0000000    8.00000   300%     -    0s
H    0     0                       3.0000000    8.00000   167%     -    0s
     0     0    8.00000    0   81    3.00000    8.00000   167%     -    0s
     0     0    8.00000    0   81    3.00000    8.00000   167%     -    0s
H    0     0                       4.0000000    8.00000   100%     -    0s
     0     0    8.00000    0   37    4.00000    8.00000   100%     -    0s
     0     0    8.00000    0   39    4.00000    8.00000   100%     -    0s
H    0     0                       5.0000000    8.00000  60.0%     -    0s
     0     0    8.00000    0   35    5.00000    8.00000  60.0%     -    0s
     0     0    8.00000    0   35    5.00000    8.00000  60.0%     -    0s
     0     0    8.00000    0   36    5.00000    8.00000  60.0%     -    0s
     0     0    8.00000    0   47    5.00000    8.00000  60.0%     -    0s
     0     0    8.00000    0   46    5.00000    8.00000  60.0%     -    0s
     0     0    8.00000    0   46    5.00000    8.00000  60.0%     -    0s
     0     0    8.00000    0   27    5.00000    8.00000  60.0%     -    0s
     0     0    8.00000    0   32    5.00000    8.00000  60.0%     -    0s
     0     0    8.00000    0   42    5.00000    8.00000  60.0%     -    0s
     0     0    8.00000    0   42    5.00000    8.00000  60.0%     -    0s
     0     2    8.00000    0   32    5.00000    8.00000  60.0%     -    0s
*  267    74               8       6.0000000    7.00000  16.7%  22.0    0s

Cutting planes:
  Cover: 11
  MIR: 47
  StrongCG: 3
  GUB cover: 3
  Inf proof: 10
  Zero half: 5
  RLT: 13

Explored 333 nodes (9497 simplex iterations) in 0.88 seconds (0.42 work units)
Thread count was 8 (of 8 available processors)

Solution count 7: 6 5 4 ... -0

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/grafo457.12.sol'

