
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 05:59:08 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo495.20.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/grafo495.20.lp
Reading time = 0.02 seconds
: 4543 rows, 403 columns, 13783 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 4543 rows, 403 columns and 13783 nonzeros
Model fingerprint: 0xab36db87
Variable types: 17 continuous, 386 integer (386 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 2.0000000
Presolve removed 566 rows and 13 columns
Presolve time: 0.04s
Presolved: 3977 rows, 390 columns, 12187 nonzeros
Variable types: 0 continuous, 390 integer (373 binary)
Found heuristic solution: objective 4.0000000

Root relaxation: objective 1.200000e+01, 126 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   12.00000    0   56    4.00000   12.00000   200%     -    0s
H    0     0                       5.0000000   12.00000   140%     -    0s
     0     0   12.00000    0   91    5.00000   12.00000   140%     -    0s
H    0     0                       8.0000000   12.00000  50.0%     -    0s
     0     0   12.00000    0   91    8.00000   12.00000  50.0%     -    0s
     0     0   12.00000    0   54    8.00000   12.00000  50.0%     -    0s
     0     0   12.00000    0   52    8.00000   12.00000  50.0%     -    0s
     0     0   12.00000    0   62    8.00000   12.00000  50.0%     -    0s
     0     0   12.00000    0   64    8.00000   12.00000  50.0%     -    0s
     0     0   11.66667    0   64    8.00000   11.66667  45.8%     -    0s
     0     0   11.66667    0   55    8.00000   11.66667  45.8%     -    0s
     0     0   11.66667    0   56    8.00000   11.66667  45.8%     -    0s
     0     0   11.66667    0   55    8.00000   11.66667  45.8%     -    0s
     0     2   11.66667    0   55    8.00000   11.66667  45.8%     -    0s

Cutting planes:
  Gomory: 2
  Cover: 13
  Clique: 2
  MIR: 40
  StrongCG: 1
  GUB cover: 1
  Inf proof: 50
  Zero half: 4
  RLT: 20
  BQP: 1
  PSD: 1

Explored 1694 nodes (39096 simplex iterations) in 3.00 seconds (1.50 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 8 5 4 2 

Optimal solution found (tolerance 1.00e-04)
Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0000%

Wrote result file './lp_solutions/grafo495.20.sol'

