
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 10:43:20 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3305.47.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/grafo3305.47.lp
Reading time = 0.23 seconds
: 106487 rows, 2940 columns, 322056 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 106487 rows, 2940 columns and 322056 nonzeros
Model fingerprint: 0x51bbe0c2
Variable types: 55 continuous, 2885 integer (2885 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, 6e+01]
Presolve removed 13970 rows and 24 columns
Presolve time: 0.67s
Presolved: 92517 rows, 2916 columns, 280562 nonzeros
Variable types: 0 continuous, 2916 integer (2861 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2868 rows, 95385 columns, 283478 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15407    5.0994979e+01   0.000000e+00   7.462300e+04      5s
   30895    5.0964842e+01   0.000000e+00   5.501483e+04     10s
   43569    5.0955043e+01   0.000000e+00   3.478596e+04     15s
   51885    5.0950751e+01   0.000000e+00   1.303103e+04     20s
   61852    5.0947621e+01   0.000000e+00   1.388811e+04     25s
   72618    5.0945549e+01   0.000000e+00   4.832810e+03     30s
   86502    5.0944509e+01   0.000000e+00   1.738367e+02     35s
   94973    5.1000000e+01   0.000000e+00   0.000000e+00     38s
   94973    5.1000000e+01   0.000000e+00   0.000000e+00     38s
   94973    5.1000000e+01   0.000000e+00   0.000000e+00     38s

Root relaxation: objective 5.100000e+01, 94973 iterations, 37.02 seconds (21.71 work units)

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

     0     0   51.00000    0 1926    8.00000   51.00000   538%     -   50s

Explored 1 nodes (100289 simplex iterations) in 50.03 seconds (33.29 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.100000000000e+01, gap 537.5000%

Wrote result file './lp_solutions/grafo3305.47.sol'

