
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:13:43 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5242.39.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/grafo5242.39.lp
Reading time = 0.14 seconds
: 84368 rows, 1898 columns, 254571 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 84368 rows, 1898 columns and 254571 nonzeros
Model fingerprint: 0x7e8e86e1
Variable types: 40 continuous, 1858 integer (1858 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 28909 rows and 35 columns
Presolve time: 0.63s
Presolved: 55459 rows, 1863 columns, 168300 nonzeros
Variable types: 0 continuous, 1863 integer (1823 binary)
Root relaxation presolved: 1857 rows, 57316 columns, 170163 nonzeros


Root relaxation: objective 3.600000e+01, 1788 iterations, 0.42 seconds (0.41 work units)
Total elapsed time = 5.45s (DegenMoves)

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

     0     0   36.00000    0  439          -   36.00000      -     -    5s
H    0     0                      14.0000000   36.00000   157%     -    5s
H    0     0                      15.0000000   36.00000   140%     -   13s
     0     0   36.00000    0  756   15.00000   36.00000   140%     -   13s
     0     0   36.00000    0  699   15.00000   36.00000   140%     -   14s
H    0     0                      16.0000000   36.00000   125%     -   39s
H    0     0                      17.0000000   36.00000   112%     -   39s
H    0     0                      18.0000000   36.00000   100%     -   39s
     0     0   35.93333    0  614   18.00000   35.93333   100%     -   39s
     0     0   35.93333    0  511   18.00000   35.93333   100%     -   41s
     0     0   35.93333    0  664   18.00000   35.93333   100%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 21
  Clique: 15
  MIR: 83
  StrongCG: 1
  GUB cover: 3
  Zero half: 43
  RLT: 54
  BQP: 4

Explored 1 nodes (43023 simplex iterations) in 50.09 seconds (45.52 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 18 17 16 ... 14

Time limit reached
Best objective 1.800000000000e+01, best bound 3.500000000000e+01, gap 94.4444%

Wrote result file './lp_solutions/grafo5242.39.sol'

