
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:10:49 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3997.40.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/grafo3997.40.lp
Reading time = 0.34 seconds
: 211584 rows, 2659 columns, 637326 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 211584 rows, 2659 columns and 637326 nonzeros
Model fingerprint: 0x80fe5db7
Variable types: 53 continuous, 2606 integer (2606 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 79685 rows and 11 columns
Presolve time: 1.40s
Presolved: 131899 rows, 2648 columns, 398684 nonzeros
Variable types: 0 continuous, 2648 integer (2595 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2638 rows, 134537 columns, 401332 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15891    7.0398251e+01   0.000000e+00   2.637966e+05      5s
   36408    5.9796314e+01   0.000000e+00   3.295495e+04     10s
   56638    5.9773134e+01   0.000000e+00   2.624103e+03     15s
   77463    5.9767679e+01   0.000000e+00   5.082401e+03     20s
   86126    6.0000000e+01   0.000000e+00   0.000000e+00     22s
   86126    6.0000000e+01   0.000000e+00   0.000000e+00     22s
   86126    6.0000000e+01   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 6.000000e+01, 86126 iterations, 20.58 seconds (15.97 work units)

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

     0     0   60.00000    0 1530   10.00000   60.00000   500%     -   50s

Explored 1 nodes (99410 simplex iterations) in 50.04 seconds (45.29 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 10 

Time limit reached
Best objective 1.000000000000e+01, best bound 6.000000000000e+01, gap 500.0000%

Wrote result file './lp_solutions/grafo3997.40.sol'

