
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:59:52 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7533.50.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/grafo7533.50.lp
Reading time = 0.27 seconds
: 171900 rows, 3508 columns, 519053 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 171900 rows, 3508 columns and 519053 nonzeros
Model fingerprint: 0x46dcb8a4
Variable types: 61 continuous, 3447 integer (3447 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 34491 rows and 2 columns
Presolve time: 0.97s
Presolved: 137409 rows, 3506 columns, 416019 nonzeros
Variable types: 0 continuous, 3506 integer (3445 binary)
Found heuristic solution: objective 15.0000000
Root relaxation presolved: 3482 rows, 140891 columns, 419525 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   14174    6.7590207e+01   0.000000e+00   3.437596e+05      5s
   29003    6.4507673e+01   0.000000e+00   5.541864e+04     10s
   43566    6.4473240e+01   0.000000e+00   7.910379e+04     15s
   58127    6.4460487e+01   0.000000e+00   5.399456e+04     20s
   72167    6.4454593e+01   0.000000e+00   2.525743e+03     25s
   85687    6.4452183e+01   0.000000e+00   2.923206e+03     30s
   97090    6.5000000e+01   0.000000e+00   0.000000e+00     34s
   97090    6.5000000e+01   0.000000e+00   0.000000e+00     34s
   97090    6.5000000e+01   0.000000e+00   0.000000e+00     34s

Root relaxation: objective 6.500000e+01, 97090 iterations, 33.06 seconds (29.65 work units)

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

     0     0   65.00000    0 2008   15.00000   65.00000   333%     -   50s

Explored 1 nodes (103092 simplex iterations) in 50.05 seconds (46.82 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 15 

Time limit reached
Best objective 1.500000000000e+01, best bound 6.500000000000e+01, gap 333.3333%

Wrote result file './lp_solutions/grafo7533.50.sol'

