
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:19:15 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6306.42.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/grafo6306.42.lp
Reading time = 0.24 seconds
: 151184 rows, 2719 columns, 456015 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 151184 rows, 2719 columns and 456015 nonzeros
Model fingerprint: 0xcada8968
Variable types: 53 continuous, 2666 integer (2666 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]
Found heuristic solution: objective -0.0000000
Presolve removed 46623 rows and 24 columns
Presolve time: 1.09s
Presolved: 104561 rows, 2695 columns, 316699 nonzeros
Variable types: 0 continuous, 2695 integer (2642 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2692 rows, 107253 columns, 319394 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20388    6.4710651e+01   0.000000e+00   2.484591e+04      5s
   41318    6.4680763e+01   0.000000e+00   1.738576e+03     10s
   51106    6.5000000e+01   0.000000e+00   0.000000e+00     13s
   51106    6.5000000e+01   0.000000e+00   0.000000e+00     13s
   51106    6.5000000e+01   0.000000e+00   0.000000e+00     13s

Root relaxation: objective 6.500000e+01, 51106 iterations, 11.38 seconds (9.44 work units)
Total elapsed time = 41.59s (DegenMoves)
Total elapsed time = 46.25s (DegenMoves)

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

     0     0   65.00000    0  939    9.00000   65.00000   622%     -   50s

Explored 1 nodes (76247 simplex iterations) in 50.05 seconds (55.05 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 -0 

Time limit reached
Best objective 9.000000000000e+00, best bound 6.500000000000e+01, gap 622.2222%

Wrote result file './lp_solutions/grafo6306.42.sol'

