
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 11:51:26 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6754.50.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/grafo6754.50.lp
Reading time = 0.24 seconds
: 145068 rows, 3513 columns, 438596 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 145068 rows, 3513 columns and 438596 nonzeros
Model fingerprint: 0xb52f08fa
Variable types: 62 continuous, 3451 integer (3451 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 17341 rows and 2 columns
Presolve time: 0.89s
Presolved: 127727 rows, 3511 columns, 387108 nonzeros
Variable types: 0 continuous, 3511 integer (3449 binary)
Root relaxation presolved: 3460 rows, 131187 columns, 390619 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15167    4.9982135e+01   0.000000e+00   2.828757e+05      5s
   31517    4.9950961e+01   0.000000e+00   2.514454e+05     10s
   45917    4.9940528e+01   0.000000e+00   5.528912e+03     15s
   58877    4.9936076e+01   0.000000e+00   2.639131e+04     20s
   71357    4.9934757e+01   0.000000e+00   1.262628e+03     25s
   82696    5.0000000e+01   0.000000e+00   0.000000e+00     30s
   82696    5.0000000e+01   0.000000e+00   0.000000e+00     30s
   82696    5.0000000e+01   0.000000e+00   0.000000e+00     30s

Root relaxation: objective 5.000000e+01, 82696 iterations, 28.52 seconds (24.65 work units)

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

     0     0   50.00000    0 1818          -   50.00000      -     -   50s
H    0     0                       4.0000000   50.00000  1150%     -   50s

Explored 1 nodes (92250 simplex iterations) in 50.09 seconds (43.78 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 4 

Time limit reached
Best objective 4.000000000000e+00, best bound 5.000000000000e+01, gap 1150.0000%

Wrote result file './lp_solutions/grafo6754.50.sol'

