
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 11:28:44 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3397.49.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/grafo3397.49.lp
Reading time = 0.11 seconds
: 62172 rows, 2197 columns, 187855 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 62172 rows, 2197 columns and 187855 nonzeros
Model fingerprint: 0xaf7343c5
Variable types: 40 continuous, 2157 integer (2157 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 4299 rows and 39 columns
Presolve time: 0.42s
Presolved: 57873 rows, 2158 columns, 175177 nonzeros
Variable types: 0 continuous, 2158 integer (2118 binary)
Root relaxation presolved: 29569 rows, 30462 columns, 118569 nonzeros


Root relaxation: objective 3.100000e+01, 1809 iterations, 0.69 seconds (0.48 work units)

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

     0     0   31.00000    0  404          -   31.00000      -     -    3s
H    0     0                      14.0000000   31.00000   121%     -    3s
H    0     0                      16.0000000   31.00000  93.8%     -    5s
     0     0   31.00000    0  652   16.00000   31.00000  93.8%     -   10s
     0     0   31.00000    0  642   16.00000   31.00000  93.8%     -   11s
     0     0   30.00000    0  385   16.00000   30.00000  87.5%     -   21s
     0     0   30.00000    0  379   16.00000   30.00000  87.5%     -   21s
     0     0   30.00000    0  214   16.00000   30.00000  87.5%     -   29s
     0     0   30.00000    0  309   16.00000   30.00000  87.5%     -   30s
     0     0   30.00000    0  282   16.00000   30.00000  87.5%     -   34s
     0     0   30.00000    0  334   16.00000   30.00000  87.5%     -   34s
     0     0   30.00000    0  281   16.00000   30.00000  87.5%     -   39s
     0     0   30.00000    0  260   16.00000   30.00000  87.5%     -   39s
     0     0   30.00000    0  294   16.00000   30.00000  87.5%     -   43s
     0     0   30.00000    0  285   16.00000   30.00000  87.5%     -   43s
     0     0   30.00000    0  319   16.00000   30.00000  87.5%     -   48s
     0     0   30.00000    0  319   16.00000   30.00000  87.5%     -   49s

Cutting planes:
  Cover: 4
  Clique: 10
  MIR: 25
  GUB cover: 1
  RLT: 16
  BQP: 3

Explored 1 nodes (59908 simplex iterations) in 50.04 seconds (37.45 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 16 14 

Time limit reached
Best objective 1.600000000000e+01, best bound 3.000000000000e+01, gap 87.5000%

Wrote result file './lp_solutions/grafo3397.49.sol'

