
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 00:44:08 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6360.40.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/grafo6360.40.lp
Reading time = 0.42 seconds
: 176677 rows, 2627 columns, 532535 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 176677 rows, 2627 columns and 532535 nonzeros
Model fingerprint: 0x1082662e
Variable types: 53 continuous, 2574 integer (2574 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 60795 rows and 24 columns
Presolve time: 1.66s
Presolved: 115882 rows, 2603 columns, 350530 nonzeros
Variable types: 0 continuous, 2603 integer (2550 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2603 rows, 118485 columns, 353133 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   12933    7.8640826e+01   0.000000e+00   6.939868e+06      5s
   30633    5.9679915e+01   0.000000e+00   3.388590e+04     10s
   46383    5.9652646e+01   0.000000e+00   1.940165e+04     15s
   62133    5.9646751e+01   0.000000e+00   5.747498e+02     20s
   71117    6.0000000e+01   0.000000e+00   0.000000e+00     23s
   71117    6.0000000e+01   0.000000e+00   0.000000e+00     23s

Root relaxation: objective 6.000000e+01, 71117 iterations, 21.35 seconds (12.77 work units)

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

     0     0   60.00000    0 1438   12.00000   60.00000   400%     -   50s

Explored 1 nodes (83051 simplex iterations) in 50.04 seconds (36.38 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 12 -0 

Time limit reached
Best objective 1.200000000000e+01, best bound 6.000000000000e+01, gap 400.0000%

Wrote result file './lp_solutions/grafo6360.40.sol'

