
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 10:40:49 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2967.47.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/grafo2967.47.lp
Reading time = 0.26 seconds
: 148166 rows, 2827 columns, 446894 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 148166 rows, 2827 columns and 446894 nonzeros
Model fingerprint: 0x1f9e08e4
Variable types: 52 continuous, 2775 integer (2775 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 39880 rows and 23 columns
Presolve time: 1.26s
Presolved: 108286 rows, 2804 columns, 327769 nonzeros
Variable types: 0 continuous, 2804 integer (2752 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2795 rows, 111081 columns, 330573 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16235    4.8477539e+01   0.000000e+00   8.086487e+04      5s
   33573    4.7913647e+01   0.000000e+00   2.635385e+04     10s
   50543    4.7898579e+01   0.000000e+00   8.112399e+03     15s
   65173    4.7894736e+01   0.000000e+00   6.826897e+02     20s
   75983    4.8000000e+01   0.000000e+00   0.000000e+00     24s
   75983    4.8000000e+01   0.000000e+00   0.000000e+00     24s
   75983    4.8000000e+01   0.000000e+00   0.000000e+00     24s

Root relaxation: objective 4.800000e+01, 75983 iterations, 22.27 seconds (17.53 work units)
Total elapsed time = 46.68s (DegenMoves)

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

     0     0   48.00000    0  729    8.00000   48.00000   500%     -   50s

Explored 1 nodes (90332 simplex iterations) in 50.08 seconds (42.67 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.800000000000e+01, gap 500.0000%

Wrote result file './lp_solutions/grafo2967.47.sol'

