
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 05:21:18 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2921.15.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/grafo2921.15.lp
Reading time = 0.01 seconds
: 2548 rows, 258 columns, 7711 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 2548 rows, 258 columns and 7711 nonzeros
Model fingerprint: 0xe903cb5d
Variable types: 14 continuous, 244 integer (244 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 617 rows and 15 columns
Presolve time: 0.04s
Presolved: 1931 rows, 243 columns, 5971 nonzeros
Variable types: 0 continuous, 243 integer (229 binary)
Found heuristic solution: objective 4.0000000

Root relaxation: objective 9.000000e+00, 82 iterations, 0.01 seconds (0.00 work units)

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

     0     0    9.00000    0   47    4.00000    9.00000   125%     -    0s
     0     0    9.00000    0   76    4.00000    9.00000   125%     -    0s
     0     0    9.00000    0   41    4.00000    9.00000   125%     -    0s
     0     0    9.00000    0   55    4.00000    9.00000   125%     -    0s
H    0     0                       5.0000000    9.00000  80.0%     -    0s
     0     0    9.00000    0   85    5.00000    9.00000  80.0%     -    0s
     0     0    9.00000    0   38    5.00000    9.00000  80.0%     -    0s
     0     0    9.00000    0   40    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   53    5.00000    9.00000  80.0%     -    0s
     0     0    9.00000    0   54    5.00000    9.00000  80.0%     -    0s
     0     0    9.00000    0   54    5.00000    9.00000  80.0%     -    0s
     0     2    9.00000    0   48    5.00000    9.00000  80.0%     -    0s
H   72    72                       6.0000000    9.00000  50.0%  43.9    1s

Cutting planes:
  Gomory: 2
  Cover: 26
  MIR: 59
  StrongCG: 3
  GUB cover: 4
  Inf proof: 27
  Zero half: 4
  RLT: 19

Explored 1241 nodes (88911 simplex iterations) in 3.58 seconds (2.21 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/grafo2921.15.sol'

