
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:48:57 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6373.49.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/grafo6373.49.lp
Reading time = 0.11 seconds
: 66782 rows, 2312 columns, 201831 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 66782 rows, 2312 columns and 201831 nonzeros
Model fingerprint: 0x73971c8a
Variable types: 43 continuous, 2269 integer (2269 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 3284 rows and 0 columns
Presolve time: 0.37s
Presolved: 63498 rows, 2312 columns, 192280 nonzeros
Variable types: 0 continuous, 2312 integer (2269 binary)
Root relaxation presolved: 2273 rows, 65771 columns, 194592 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   27800    3.3933592e+01   0.000000e+00   1.866115e+03      5s
   37544    3.4000000e+01   0.000000e+00   0.000000e+00      7s
   37544    3.4000000e+01   0.000000e+00   0.000000e+00      7s
   37544    3.4000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 3.400000e+01, 37544 iterations, 6.32 seconds (5.70 work units)
Total elapsed time = 16.12s (DegenMoves)
Total elapsed time = 24.82s (DegenMoves)
Total elapsed time = 27.81s (DegenMoves)

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

     0     0   34.00000    0  592          -   34.00000      -     -   28s
H    0     0                      11.0000000   34.00000   209%     -   28s
H    0     0                      12.0000000   34.00000   183%     -   31s
     0     0   34.00000    0  822   12.00000   34.00000   183%     -   39s
H    0     0                      13.0000000   34.00000   162%     -   40s
     0     0   34.00000    0  833   13.00000   34.00000   162%     -   41s
     0     0          -    0        13.00000   34.00000   162%     -   50s

Cutting planes:
  Gomory: 7
  Lift-and-project: 21
  Cover: 10
  Clique: 1
  MIR: 80
  StrongCG: 2
  Zero half: 51
  RLT: 73

Explored 1 nodes (74120 simplex iterations) in 50.08 seconds (48.64 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 13 12 11 

Time limit reached
Best objective 1.300000000000e+01, best bound 3.400000000000e+01, gap 161.5385%

Wrote result file './lp_solutions/grafo6373.49.sol'

