
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 06:19:24 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5437.50.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/grafo5437.50.lp
Reading time = 0.46 seconds
: 245814 rows, 3896 columns, 741339 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 245814 rows, 3896 columns and 741339 nonzeros
Model fingerprint: 0xc4b97b64
Variable types: 65 continuous, 3831 integer (3831 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 66147 rows and 24 columns
Presolve time: 1.90s
Presolved: 179667 rows, 3872 columns, 543395 nonzeros
Variable types: 0 continuous, 3872 integer (3807 binary)
Found heuristic solution: objective 13.0000000
Root relaxation presolved: 3824 rows, 183491 columns, 547267 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   10079    9.9585644e+01   0.000000e+00   2.942940e+05      6s
   21091    6.4849677e+01   0.000000e+00   1.085523e+06     10s
   31668    6.4739650e+01   0.000000e+00   4.094484e+05     15s
   40886    6.4657951e+01   0.000000e+00   1.646033e+05     20s
   51387    6.4585560e+01   0.000000e+00   1.584892e+05     25s
   60571    6.4555404e+01   0.000000e+00   4.283883e+04     30s
   70411    6.4538266e+01   0.000000e+00   1.553730e+04     35s
   79595    6.4528555e+01   0.000000e+00   2.089830e+04     40s
   88123    6.4522561e+01   0.000000e+00   1.689482e+04     45s

Root relaxation: time limit, 96537 iterations, 47.63 seconds (27.41 work units)

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

     0     0          -    0        13.00000  349.00000  2585%     -   50s

Explored 1 nodes (96537 simplex iterations) in 50.03 seconds (29.48 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 13 

Time limit reached
Best objective 1.300000000000e+01, best bound 3.490000000000e+02, gap 2584.6154%

Wrote result file './lp_solutions/grafo5437.50.sol'

