
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 07:52:23 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6143.39.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/grafo6143.39.lp
Reading time = 0.65 seconds
: 393821 rows, 2482 columns, 1183753 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 393821 rows, 2482 columns and 1183753 nonzeros
Model fingerprint: 0xa7f7d93b
Variable types: 49 continuous, 2433 integer (2433 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 181022 rows and 12 columns
Presolve time: 2.81s
Presolved: 212799 rows, 2470 columns, 641063 nonzeros
Variable types: 0 continuous, 2470 integer (2421 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 2457 rows, 215256 columns, 643533 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    8556    1.3557840e+02   0.000000e+00   3.200158e+05      5s
   36723    7.2983121e+01   0.000000e+00   5.846209e+05     10s
   57547    5.9878288e+01   0.000000e+00   7.830015e+05     15s
   79321    5.7836476e+01   0.000000e+00   4.689845e+04     20s
  102990    5.7820600e+01   0.000000e+00   3.018270e+03     25s
  124727    5.8000000e+01   0.000000e+00   0.000000e+00     30s
  124727    5.8000000e+01   0.000000e+00   0.000000e+00     30s
  124727    5.8000000e+01   0.000000e+00   0.000000e+00     30s

Root relaxation: objective 5.800000e+01, 124727 iterations, 26.67 seconds (19.25 work units)

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

     0     0   58.00000    0 1337    7.00000   58.00000   729%     -   50s

Explored 1 nodes (131659 simplex iterations) in 50.07 seconds (41.98 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 7 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.800000000000e+01, gap 728.5714%

Wrote result file './lp_solutions/grafo6143.39.sol'

