
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 15:22:28 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2152.21.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/grafo2152.21.lp
Reading time = 0.02 seconds
: 9307 rows, 394 columns, 28060 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 9307 rows, 394 columns and 28060 nonzeros
Model fingerprint: 0x8dd66d16
Variable types: 13 continuous, 381 integer (381 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 3325 rows and 0 columns
Presolve time: 0.05s
Presolved: 5982 rows, 394 columns, 18208 nonzeros
Variable types: 0 continuous, 394 integer (381 binary)
Found heuristic solution: objective 3.0000000

Root relaxation: objective 9.000000e+00, 214 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   54    3.00000    9.00000   200%     -    0s
H    0     0                       5.0000000    9.00000  80.0%     -    0s
     0     0    9.00000    0   72    5.00000    9.00000  80.0%     -    0s
     0     0    9.00000    0   70    5.00000    9.00000  80.0%     -    0s
     0     0    9.00000    0   53    5.00000    9.00000  80.0%     -    0s
     0     0    9.00000    0   48    5.00000    9.00000  80.0%     -    0s
     0     0    9.00000    0   57    5.00000    9.00000  80.0%     -    0s
     0     0    9.00000    0   55    5.00000    9.00000  80.0%     -    0s
     0     0    9.00000    0   50    5.00000    9.00000  80.0%     -    0s
     0     0    9.00000    0   48    5.00000    9.00000  80.0%     -    0s
     0     0    9.00000    0   48    5.00000    9.00000  80.0%     -    0s
     0     0    9.00000    0   49    5.00000    9.00000  80.0%     -    0s
     0     0    9.00000    0   50    5.00000    9.00000  80.0%     -    0s
     0     0    9.00000    0   50    5.00000    9.00000  80.0%     -    0s
     0     2    9.00000    0   50    5.00000    9.00000  80.0%     -    1s
H  114   123                       6.0000000    9.00000  50.0%  50.1    1s
H  186   169                       7.0000000    9.00000  28.6%  53.9    1s
  1712   544     cutoff   25         7.00000    9.00000  28.6%  40.7    5s
  2205   670    9.00000   22   54    7.00000    9.00000  28.6%  44.0   10s
  3146   724    8.33333   27   61    7.00000    9.00000  28.6%  41.5   16s
  3273   702    8.33333   30   48    7.00000    9.00000  28.6%  41.3   20s

Cutting planes:
  Gomory: 1
  Implied bound: 1
  Flow cover: 4
  GUB cover: 1
  Zero half: 1
  RLT: 2

Explored 7564 nodes (266310 simplex iterations) in 23.85 seconds (19.67 work units)
Thread count was 8 (of 8 available processors)

Solution count 8: 7 7 7 ... 2

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/grafo2152.21.sol'

