
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 05:27:07 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2998.18.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/grafo2998.18.lp
Reading time = 0.02 seconds
: 6174 rows, 415 columns, 18712 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 6174 rows, 415 columns and 18712 nonzeros
Model fingerprint: 0x1deb3bd4
Variable types: 19 continuous, 396 integer (396 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 1674 rows and 18 columns
Presolve time: 0.05s
Presolved: 4500 rows, 397 columns, 13834 nonzeros
Variable types: 0 continuous, 397 integer (378 binary)
Found heuristic solution: objective 5.0000000

Root relaxation: objective 1.400000e+01, 185 iterations, 0.03 seconds (0.01 work units)

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

     0     0   14.00000    0   78    5.00000   14.00000   180%     -    0s
     0     0   14.00000    0  132    5.00000   14.00000   180%     -    0s
     0     0   14.00000    0  125    5.00000   14.00000   180%     -    0s
     0     0   14.00000    0   86    5.00000   14.00000   180%     -    0s
     0     0   14.00000    0   85    5.00000   14.00000   180%     -    0s
     0     0   14.00000    0  102    5.00000   14.00000   180%     -    0s
H    0     0                       7.0000000   14.00000   100%     -    0s
     0     0   14.00000    0  109    7.00000   14.00000   100%     -    0s
H    0     0                       8.0000000   14.00000  75.0%     -    1s
     0     0   14.00000    0  126    8.00000   14.00000  75.0%     -    1s
     0     0   14.00000    0  100    8.00000   14.00000  75.0%     -    1s
     0     0   14.00000    0  120    8.00000   14.00000  75.0%     -    1s
     0     0   14.00000    0  111    8.00000   14.00000  75.0%     -    1s
     0     0   14.00000    0  108    8.00000   14.00000  75.0%     -    2s
     0     0   14.00000    0  108    8.00000   14.00000  75.0%     -    2s
     0     2   14.00000    0  108    8.00000   14.00000  75.0%     -    2s
   356   279    9.00000   21  110    8.00000   14.00000  75.0%  90.4    5s
H  413   223                       9.0000000   14.00000  55.6%  89.6    6s

Cutting planes:
  Gomory: 2
  Lift-and-project: 1
  Cover: 16
  MIR: 116
  StrongCG: 4
  GUB cover: 1
  Inf proof: 20
  Zero half: 1
  RLT: 50
  Relax-and-lift: 1

Explored 1892 nodes (113960 simplex iterations) in 9.82 seconds (6.70 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 9 8 7 ... 1

Optimal solution found (tolerance 1.00e-04)
Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0000%

Wrote result file './lp_solutions/grafo2998.18.sol'

