
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 04:14:53 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2142.16.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/grafo2142.16.lp
Reading time = 0.01 seconds
: 2264 rows, 253 columns, 6850 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 2264 rows, 253 columns and 6850 nonzeros
Model fingerprint: 0x55683406
Variable types: 13 continuous, 240 integer (240 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 1.0000000
Presolve removed 375 rows and 13 columns
Presolve time: 0.02s
Presolved: 1889 rows, 240 columns, 5821 nonzeros
Variable types: 0 continuous, 240 integer (227 binary)
Found heuristic solution: objective 4.0000000

Root relaxation: objective 8.000000e+00, 59 iterations, 0.00 seconds (0.00 work units)

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

     0     0    8.00000    0   19    4.00000    8.00000   100%     -    0s
H    0     0                       5.0000000    8.00000  60.0%     -    0s
H    0     0                       6.0000000    8.00000  33.3%     -    0s
     0     0    8.00000    0   37    6.00000    8.00000  33.3%     -    0s
     0     0    8.00000    0   32    6.00000    8.00000  33.3%     -    0s
     0     0    7.66667    0   22    6.00000    7.66667  27.8%     -    0s
     0     0    7.00000    0   23    6.00000    7.00000  16.7%     -    0s
     0     0    7.00000    0   23    6.00000    7.00000  16.7%     -    0s
     0     0    7.00000    0   14    6.00000    7.00000  16.7%     -    0s
     0     0    7.00000    0   34    6.00000    7.00000  16.7%     -    0s
     0     0    7.00000    0   29    6.00000    7.00000  16.7%     -    0s
     0     0    7.00000    0   32    6.00000    7.00000  16.7%     -    0s
     0     0    7.00000    0   34    6.00000    7.00000  16.7%     -    0s
     0     0    7.00000    0   21    6.00000    7.00000  16.7%     -    0s
     0     2    7.00000    0   21    6.00000    7.00000  16.7%     -    0s

Cutting planes:
  Cover: 8
  MIR: 14
  Inf proof: 9
  Zero half: 4
  RLT: 15

Explored 189 nodes (7202 simplex iterations) in 0.87 seconds (0.34 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 6 5 4 1 

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/grafo2142.16.sol'

