
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:29:44 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6371.41.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/grafo6371.41.lp
Reading time = 0.34 seconds
: 217015 rows, 2617 columns, 653465 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 217015 rows, 2617 columns and 653465 nonzeros
Model fingerprint: 0xf92a1dd7
Variable types: 52 continuous, 2565 integer (2565 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 83804 rows and 25 columns
Presolve time: 1.62s
Presolved: 133211 rows, 2592 columns, 402484 nonzeros
Variable types: 0 continuous, 2592 integer (2540 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2589 rows, 135800 columns, 405076 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17096    7.8665553e+01   0.000000e+00   2.278865e+05      5s
   37410    6.1819908e+01   0.000000e+00   1.197502e+05     10s
   58243    5.9754611e+01   0.000000e+00   1.248322e+04     15s
   79663    5.9738644e+01   0.000000e+00   3.360120e+03     20s
   96567    6.0000000e+01   0.000000e+00   0.000000e+00     24s
   96567    6.0000000e+01   0.000000e+00   0.000000e+00     24s
   96567    6.0000000e+01   0.000000e+00   0.000000e+00     24s

Root relaxation: objective 6.000000e+01, 96567 iterations, 22.38 seconds (17.49 work units)
Total elapsed time = 49.20s (DegenMoves)

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

     0     0   60.00000    0  775    8.00000   60.00000   650%     -   50s

Explored 1 nodes (110138 simplex iterations) in 50.05 seconds (46.54 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 6.000000000000e+01, gap 650.0000%

Wrote result file './lp_solutions/grafo6371.41.sol'

