
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:01:59 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6744.46.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/grafo6744.46.lp
Reading time = 0.20 seconds
: 123909 rows, 2961 columns, 374416 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 123909 rows, 2961 columns and 374416 nonzeros
Model fingerprint: 0xc0427c8a
Variable types: 56 continuous, 2905 integer (2905 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]
Found heuristic solution: objective -0.0000000
Presolve removed 22315 rows and 0 columns
Presolve time: 0.72s
Presolved: 101594 rows, 2961 columns, 307909 nonzeros
Variable types: 0 continuous, 2961 integer (2905 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2919 rows, 104513 columns, 310870 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18717    5.6987305e+01   0.000000e+00   1.864803e+05      5s
   36495    5.6962601e+01   0.000000e+00   1.271529e+05     10s
   53843    5.6952971e+01   0.000000e+00   1.406686e+04     15s
   71160    5.6947974e+01   0.000000e+00   8.143316e+03     20s
   88476    5.6946257e+01   0.000000e+00   2.274572e+02     25s
   92316    5.7000000e+01   0.000000e+00   0.000000e+00     26s
   92316    5.7000000e+01   0.000000e+00   0.000000e+00     26s
   92316    5.7000000e+01   0.000000e+00   0.000000e+00     26s

Root relaxation: objective 5.700000e+01, 92316 iterations, 25.34 seconds (21.48 work units)

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

     0     0   57.00000    0 1852    8.00000   57.00000   612%     -   50s

Explored 1 nodes (106827 simplex iterations) in 50.02 seconds (45.32 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 -0 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.700000000000e+01, gap 612.5000%

Wrote result file './lp_solutions/grafo6744.46.sol'

