
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 05:16:54 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6451.47.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/grafo6451.47.lp
Reading time = 0.63 seconds
: 339192 rows, 3442 columns, 1020897 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 339192 rows, 3442 columns and 1020897 nonzeros
Model fingerprint: 0x3ba38100
Variable types: 60 continuous, 3382 integer (3382 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 128680 rows and 11 columns
Presolve time: 2.97s
Presolved: 210512 rows, 3431 columns, 635288 nonzeros
Variable types: 0 continuous, 3431 integer (3371 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 3417 rows, 213929 columns, 638719 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    3596    2.1145177e+02   0.000000e+00   1.777824e+06      5s
   22719    1.1905561e+02   0.000000e+00   3.699313e+05     11s
   34140    9.6281625e+01   0.000000e+00   2.289788e+05     16s
   44966    8.4956571e+01   0.000000e+00   3.722230e+05     20s
   56842    7.1913411e+01   0.000000e+00   3.221274e+05     25s
   68679    7.0833610e+01   0.000000e+00   2.584762e+05     30s
   80487    7.0777705e+01   0.000000e+00   1.171450e+05     35s
   92202    7.0742709e+01   0.000000e+00   1.922960e+04     40s
  102342    7.0727080e+01   0.000000e+00   8.317398e+04     45s

Root relaxation: time limit, 113584 iterations, 46.37 seconds (28.10 work units)

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

     0     0          -    0         9.00000  378.00000  4100%     -   50s

Explored 1 nodes (113584 simplex iterations) in 50.03 seconds (31.01 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 9 

Time limit reached
Best objective 9.000000000000e+00, best bound 3.780000000000e+02, gap 4100.0000%

Wrote result file './lp_solutions/grafo6451.47.sol'

