
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 20:13:42 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3022.36.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/grafo3022.36.lp
Reading time = 0.08 seconds
: 51185 rows, 1695 columns, 154893 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 51185 rows, 1695 columns and 154893 nonzeros
Model fingerprint: 0xf72d750f
Variable types: 39 continuous, 1656 integer (1656 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 11356 rows and 8 columns
Presolve time: 0.29s
Presolved: 39829 rows, 1687 columns, 121280 nonzeros
Variable types: 0 continuous, 1687 integer (1648 binary)
Root relaxation presolved: 23550 rows, 17966 columns, 88722 nonzeros


Root relaxation: objective 3.900000e+01, 1423 iterations, 0.35 seconds (0.31 work units)

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

     0     0   39.00000    0  275          -   39.00000      -     -    1s
H    0     0                      13.0000000   39.00000   200%     -    2s
H    0     0                      14.0000000   39.00000   179%     -    2s
     0     0   39.00000    0  536   14.00000   39.00000   179%     -    3s
     0     0   39.00000    0  508   14.00000   39.00000   179%     -    4s
H    0     0                      16.0000000   39.00000   144%     -    5s
H    0     0                      18.0000000   39.00000   117%     -   13s
     0     0   39.00000    0  483   18.00000   39.00000   117%     -   13s
     0     0   39.00000    0  444   18.00000   39.00000   117%     -   13s
H    0     0                      19.0000000   39.00000   105%     -   30s
     0     0   39.00000    0  390   19.00000   39.00000   105%     -   30s
     0     0   39.00000    0  353   19.00000   39.00000   105%     -   31s
     0     0   39.00000    0  338   19.00000   39.00000   105%     -   39s
     0     0   39.00000    0  327   19.00000   39.00000   105%     -   39s
     0     0   39.00000    0  408   19.00000   39.00000   105%     -   49s
     0     0   39.00000    0  385   19.00000   39.00000   105%     -   49s
     0     0          -    0        19.00000   39.00000   105%     -   50s

Cutting planes:
  Cover: 25
  Clique: 5
  MIR: 106
  StrongCG: 1
  GUB cover: 1
  Zero half: 28
  RLT: 49
  BQP: 1

Explored 1 nodes (67050 simplex iterations) in 50.05 seconds (44.03 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 19 18 16 ... 13

Time limit reached
Best objective 1.900000000000e+01, best bound 3.900000000000e+01, gap 105.2632%

Wrote result file './lp_solutions/grafo3022.36.sol'

