
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 07:03:17 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo600.19.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/grafo600.19.lp
Reading time = 0.01 seconds
: 4242 rows, 378 columns, 12862 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 4242 rows, 378 columns and 12862 nonzeros
Model fingerprint: 0xd9eb0a8d
Variable types: 17 continuous, 361 integer (361 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 629 rows and 15 columns
Presolve time: 0.05s
Presolved: 3613 rows, 363 columns, 11101 nonzeros
Variable types: 0 continuous, 363 integer (346 binary)
Found heuristic solution: objective 2.0000000

Root relaxation: objective 1.000000e+01, 210 iterations, 0.02 seconds (0.01 work units)

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

     0     0   10.00000    0   49    2.00000   10.00000   400%     -    0s
H    0     0                       3.0000000   10.00000   233%     -    0s
H    0     0                       4.0000000   10.00000   150%     -    0s
     0     0   10.00000    0  126    4.00000   10.00000   150%     -    0s
H    0     0                       5.0000000   10.00000   100%     -    0s
     0     0   10.00000    0   95    5.00000   10.00000   100%     -    0s
     0     0   10.00000    0   83    5.00000   10.00000   100%     -    0s
     0     0   10.00000    0   37    5.00000   10.00000   100%     -    0s
H    0     0                       6.0000000   10.00000  66.7%     -    0s
     0     0   10.00000    0   61    6.00000   10.00000  66.7%     -    0s
     0     0   10.00000    0   74    6.00000   10.00000  66.7%     -    0s
     0     0   10.00000    0   67    6.00000   10.00000  66.7%     -    1s
     0     0   10.00000    0   67    6.00000   10.00000  66.7%     -    1s
     0     0   10.00000    0   64    6.00000   10.00000  66.7%     -    1s
     0     0   10.00000    0   68    6.00000   10.00000  66.7%     -    1s
     0     0   10.00000    0   67    6.00000   10.00000  66.7%     -    1s
     0     0    9.66667    0   63    6.00000    9.66667  61.1%     -    1s
     0     0    9.66667    0   45    6.00000    9.66667  61.1%     -    1s
H    0     0                       7.0000000    9.66667  38.1%     -    1s
     0     2    9.66667    0   45    7.00000    9.66667  38.1%     -    1s
   884   146 infeasible   23         7.00000    8.00000  14.3%  84.3    5s

Cutting planes:
  Gomory: 1
  Cover: 53
  Clique: 2
  MIR: 48
  StrongCG: 2
  GUB cover: 2
  Inf proof: 16
  Zero half: 2
  RLT: 29
  Relax-and-lift: 1
  BQP: 1

Explored 1814 nodes (200697 simplex iterations) in 9.16 seconds (6.51 work units)
Thread count was 8 (of 8 available processors)

Solution count 7: 7 6 5 ... 1

Optimal solution found (tolerance 1.00e-04)
Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0000%

Wrote result file './lp_solutions/grafo600.19.sol'

