
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 05:03:46 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2728.16.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/grafo2728.16.lp
Reading time = 0.01 seconds
: 4582 rows, 285 columns, 13816 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 4582 rows, 285 columns and 13816 nonzeros
Model fingerprint: 0x3ad11d61
Variable types: 14 continuous, 271 integer (271 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 1748 rows and 12 columns
Presolve time: 0.04s
Presolved: 2834 rows, 273 columns, 8668 nonzeros
Variable types: 0 continuous, 273 integer (259 binary)
Found heuristic solution: objective 2.0000000

Root relaxation: objective 1.200000e+01, 161 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   79    2.00000   12.00000   500%     -    0s
     0     0   12.00000    0  131    2.00000   12.00000   500%     -    0s
H    0     0                       3.0000000   12.00000   300%     -    0s
     0     0   12.00000    0   86    3.00000   12.00000   300%     -    0s
H    0     0                       4.0000000   12.00000   200%     -    0s
     0     0   12.00000    0   59    4.00000   12.00000   200%     -    0s
     0     0   12.00000    0   62    4.00000   12.00000   200%     -    0s
     0     0   12.00000    0   61    4.00000   12.00000   200%     -    0s
     0     0   12.00000    0   87    4.00000   12.00000   200%     -    0s
     0     0   12.00000    0   78    4.00000   12.00000   200%     -    0s
     0     0   12.00000    0   63    4.00000   12.00000   200%     -    0s
     0     0   12.00000    0   86    4.00000   12.00000   200%     -    0s
     0     0   11.50000    0   87    4.00000   11.50000   188%     -    1s
     0     0   11.50000    0  117    4.00000   11.50000   188%     -    1s
H    0     0                       5.0000000   11.50000   130%     -    1s
     0     0   11.00000    0  103    5.00000   11.00000   120%     -    1s
     0     0   11.00000    0   83    5.00000   11.00000   120%     -    1s
     0     2   11.00000    0   75    5.00000   11.00000   120%     -    1s
H  297   222                       6.0000000   11.00000  83.3%  70.3    2s
  1611   530    7.00000   32   70    6.00000   10.00000  66.7%  45.1    5s
H 2322   304                       7.0000000    9.50000  35.7%  43.1    6s

Cutting planes:
  Gomory: 1
  Cover: 29
  Clique: 2
  MIR: 150
  StrongCG: 5
  GUB cover: 8
  Inf proof: 32
  Zero half: 11
  RLT: 53
  Relax-and-lift: 1

Explored 2840 nodes (118203 simplex iterations) in 6.85 seconds (4.22 work units)
Thread count was 8 (of 8 available processors)

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

Optimal solution found (tolerance 1.00e-04)
Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0000%

Wrote result file './lp_solutions/grafo2728.16.sol'

