
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 15:27:03 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo509.21.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/grafo509.21.lp
Reading time = 0.10 seconds
: 60255 rows, 762 columns, 181253 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 60255 rows, 762 columns and 181253 nonzeros
Model fingerprint: 0x6a2694c2
Variable types: 25 continuous, 737 integer (737 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 -0.0000000
Presolve removed 29529 rows and 9 columns
Presolve time: 0.41s
Presolved: 30726 rows, 753 columns, 92890 nonzeros
Variable types: 0 continuous, 753 integer (728 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 750 rows, 31476 columns, 93643 nonzeros


Root relaxation: objective 3.000000e+01, 971 iterations, 0.20 seconds (0.24 work units)

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

     0     0   30.00000    0  262    8.00000   30.00000   275%     -    2s
     0     0   30.00000    0  345    8.00000   30.00000   275%     -    4s
     0     0   30.00000    0  334    8.00000   30.00000   275%     -    4s
     0     0   30.00000    0  265    8.00000   30.00000   275%     -   12s
     0     0   30.00000    0  290    8.00000   30.00000   275%     -   12s
     0     0   30.00000    0  327    8.00000   30.00000   275%     -   16s
     0     0   30.00000    0  287    8.00000   30.00000   275%     -   17s
     0     0   30.00000    0  307    8.00000   30.00000   275%     -   21s
     0     0   30.00000    0  314    8.00000   30.00000   275%     -   22s
     0     0   30.00000    0  319    8.00000   30.00000   275%     -   25s
     0     0   30.00000    0  368    8.00000   30.00000   275%     -   26s
     0     0   30.00000    0  377    8.00000   30.00000   275%     -   29s
     0     0   30.00000    0  296    8.00000   30.00000   275%     -   32s
     0     2   30.00000    0  249    8.00000   30.00000   275%     -   35s
    52    72   30.00000   14  229    8.00000   30.00000   275%   483   41s
    97   144   26.33333   28  259    8.00000   30.00000   275%   485   46s
   143   211   30.00000   36  368    8.00000   30.00000   275%   492   50s

Cutting planes:
  Gomory: 1
  Clique: 40
  MIR: 30
  Zero half: 3
  RLT: 38
  BQP: 7

Explored 210 nodes (128333 simplex iterations) in 50.04 seconds (62.81 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 -0 

Time limit reached
Best objective 8.000000000000e+00, best bound 3.000000000000e+01, gap 275.0000%

Wrote result file './lp_solutions/grafo509.21.sol'

