
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 06:02:31 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6488.49.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/grafo6488.49.lp
Reading time = 0.46 seconds
: 225107 rows, 3072 columns, 677938 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 225107 rows, 3072 columns and 677938 nonzeros
Model fingerprint: 0xa19cb268
Variable types: 53 continuous, 3019 integer (3019 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 77427 rows and 13 columns
Presolve time: 1.82s
Presolved: 147680 rows, 3059 columns, 446065 nonzeros
Variable types: 0 continuous, 3059 integer (3006 binary)
Root relaxation presolved: 3050 rows, 150730 columns, 449124 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   11501    8.1844319e+01   0.000000e+00   2.175015e+06      5s
   26448    5.6743956e+01   0.000000e+00   1.219383e+05     10s
   40656    5.6708564e+01   0.000000e+00   1.020662e+05     15s
   53088    5.6701780e+01   0.000000e+00   5.171996e+03     20s
   65520    5.6700239e+01   0.000000e+00   9.812045e+01     25s
   69224    5.7000000e+01   0.000000e+00   0.000000e+00     26s
   69224    5.7000000e+01   0.000000e+00   0.000000e+00     27s
   69224    5.7000000e+01   0.000000e+00   0.000000e+00     27s

Root relaxation: objective 5.700000e+01, 69224 iterations, 24.33 seconds (14.64 work units)

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

     0     0   57.00000    0 1557          -   57.00000      -     -   50s
H    0     0                       3.0000000   57.00000  1800%     -   50s

Explored 1 nodes (77879 simplex iterations) in 50.11 seconds (35.87 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 3 

Time limit reached
Best objective 3.000000000000e+00, best bound 5.700000000000e+01, gap 1800.0000%

Wrote result file './lp_solutions/grafo6488.49.sol'

