
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 03:44:40 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1871.17.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/grafo1871.17.lp
Reading time = 0.01 seconds
: 4983 rows, 274 columns, 15006 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 4983 rows, 274 columns and 15006 nonzeros
Model fingerprint: 0xa4fc1387
Variable types: 12 continuous, 262 integer (262 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 1941 rows and 4 columns
Presolve time: 0.06s
Presolved: 3042 rows, 270 columns, 9222 nonzeros
Variable types: 0 continuous, 270 integer (258 binary)
Found heuristic solution: objective 5.0000000

Root relaxation: objective 1.300000e+01, 137 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   13.00000    0   56    5.00000   13.00000   160%     -    0s
     0     0   13.00000    0   70    5.00000   13.00000   160%     -    0s
     0     0   13.00000    0   70    5.00000   13.00000   160%     -    0s
H    0     0                       6.0000000   12.00000   100%     -    0s
     0     0   12.00000    0   88    6.00000   12.00000   100%     -    0s
     0     0   12.00000    0   85    6.00000   12.00000   100%     -    0s
     0     0   12.00000    0   75    6.00000   12.00000   100%     -    0s
     0     0   11.66667    0   79    6.00000   11.66667  94.4%     -    0s
     0     0   11.16667    0   93    6.00000   11.16667  86.1%     -    0s
     0     0   11.00000    0   91    6.00000   11.00000  83.3%     -    0s
     0     0   11.00000    0   83    6.00000   11.00000  83.3%     -    1s
     0     0   11.00000    0   83    6.00000   11.00000  83.3%     -    1s
     0     2   11.00000    0   72    6.00000   11.00000  83.3%     -    1s
  1598   852    7.00000   21   98    6.00000   11.00000  83.3%  39.2    5s
  3096   974    8.66667   27  104    6.00000   10.00000  66.7%  40.9   10s
  6698   687 infeasible   30         6.00000    8.00000  33.3%  43.8   15s

Cutting planes:
  MIR: 2
  Inf proof: 1
  RLT: 6

Explored 8701 nodes (392598 simplex iterations) in 16.75 seconds (8.39 work units)
Thread count was 8 (of 8 available processors)

Solution count 6: 6 6 6 ... 2

Optimal solution found (tolerance 1.00e-04)
Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0000%

Wrote result file './lp_solutions/grafo1871.17.sol'

