
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 03:43:48 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1864.18.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/grafo1864.18.lp
Reading time = 0.01 seconds
: 3417 rows, 321 columns, 10344 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 3417 rows, 321 columns and 10344 nonzeros
Model fingerprint: 0x7484c170
Variable types: 15 continuous, 306 integer (306 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 581 rows and 15 columns
Presolve time: 0.03s
Presolved: 2836 rows, 306 columns, 8712 nonzeros
Variable types: 0 continuous, 306 integer (291 binary)
Found heuristic solution: objective 2.0000000

Root relaxation: objective 9.000000e+00, 328 iterations, 0.02 seconds (0.02 work units)

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

     0     0    9.00000    0   46    2.00000    9.00000   350%     -    0s
H    0     0                       3.0000000    9.00000   200%     -    0s
H    0     0                       4.0000000    9.00000   125%     -    0s
     0     0    9.00000    0   80    4.00000    9.00000   125%     -    0s
H    0     0                       5.0000000    9.00000  80.0%     -    0s
     0     0    9.00000    0   80    5.00000    9.00000  80.0%     -    0s
     0     0    9.00000    0   58    5.00000    9.00000  80.0%     -    0s
     0     0    9.00000    0   58    5.00000    9.00000  80.0%     -    0s
     0     0    9.00000    0   79    5.00000    9.00000  80.0%     -    0s
     0     0    9.00000    0   78    5.00000    9.00000  80.0%     -    0s
     0     0    9.00000    0   31    5.00000    9.00000  80.0%     -    0s
H    0     0                       6.0000000    9.00000  50.0%     -    0s
     0     0    9.00000    0   35    6.00000    9.00000  50.0%     -    0s
     0     0    9.00000    0   58    6.00000    9.00000  50.0%     -    0s
     0     0    9.00000    0   56    6.00000    9.00000  50.0%     -    0s
     0     0    9.00000    0   41    6.00000    9.00000  50.0%     -    0s
     0     0    9.00000    0   53    6.00000    9.00000  50.0%     -    0s
     0     0    9.00000    0   49    6.00000    9.00000  50.0%     -    0s
     0     0    9.00000    0   37    6.00000    9.00000  50.0%     -    0s
     0     2    9.00000    0   37    6.00000    9.00000  50.0%     -    1s
H   35    30                       7.0000000    9.00000  28.6%  21.3    1s

Cutting planes:
  Gomory: 1
  Cover: 10
  MIR: 40
  StrongCG: 4
  GUB cover: 4
  Inf proof: 2
  Zero half: 1
  RLT: 17
  Relax-and-lift: 2

Explored 149 nodes (6171 simplex iterations) in 1.35 seconds (0.59 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/grafo1864.18.sol'

