
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 18 21:20:45 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6254.37.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/grafo6254.37.lp
Reading time = 0.09 seconds
: 54513 rows, 1780 columns, 164931 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 54513 rows, 1780 columns and 164931 nonzeros
Model fingerprint: 0xed0df547
Variable types: 41 continuous, 1739 integer (1739 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]
Presolve removed 11477 rows and 58 columns
Presolve time: 0.37s
Presolved: 43036 rows, 1722 columns, 130866 nonzeros
Variable types: 0 continuous, 1722 integer (1681 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 24606 rows, 20152 columns, 94006 nonzeros


Root relaxation: objective 3.800000e+01, 2505 iterations, 1.05 seconds (0.93 work units)

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

     0     0   38.00000    0  329    5.00000   38.00000   660%     -    4s
H    0     0                       6.0000000   38.00000   533%     -    4s
     0     0   38.00000    0  625    6.00000   38.00000   533%     -    9s
     0     0   38.00000    0  607    6.00000   38.00000   533%     -   10s
H    0     0                       7.0000000   38.00000   443%     -   25s
     0     0   37.00000    0  592    7.00000   37.00000   429%     -   25s
H    0     0                       9.0000000   37.00000   311%     -   26s
     0     0   37.00000    0  539    9.00000   37.00000   311%     -   27s
     0     0   37.00000    0  762    9.00000   37.00000   311%     -   50s

Cutting planes:
  Gomory: 2
  Cover: 30
  Clique: 7
  MIR: 159
  StrongCG: 1
  GUB cover: 1
  Zero half: 45
  RLT: 60
  BQP: 2

Explored 1 nodes (52963 simplex iterations) in 50.04 seconds (42.52 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 9 7 6 5 

Time limit reached
Best objective 9.000000000000e+00, best bound 3.700000000000e+01, gap 311.1111%

Wrote result file './lp_solutions/grafo6254.37.sol'

