
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 11:09:24 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2251.48.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/grafo2251.48.lp
Reading time = 0.23 seconds
: 138391 rows, 3009 columns, 417851 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 138391 rows, 3009 columns and 417851 nonzeros
Model fingerprint: 0x2c1562e0
Variable types: 55 continuous, 2954 integer (2954 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 31051 rows and 20 columns
Presolve time: 0.99s
Presolved: 107340 rows, 2989 columns, 325114 nonzeros
Variable types: 0 continuous, 2989 integer (2934 binary)
Found heuristic solution: objective 12.0000000
Root relaxation presolved: 2981 rows, 110321 columns, 328103 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16733    5.3961446e+01   0.000000e+00   9.296829e+04      5s
   33165    5.3937371e+01   0.000000e+00   9.891826e+03     10s
   48300    5.3932135e+01   0.000000e+00   1.198361e+04     15s
   63052    5.3930909e+01   0.000000e+00   5.027849e+01     20s
   70677    5.4000000e+01   0.000000e+00   0.000000e+00     23s
   70677    5.4000000e+01   0.000000e+00   0.000000e+00     23s
   70677    5.4000000e+01   0.000000e+00   0.000000e+00     23s

Root relaxation: objective 5.400000e+01, 70677 iterations, 21.47 seconds (17.44 work units)
Total elapsed time = 46.04s (DegenMoves)

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

     0     0   54.00000    0  624   12.00000   54.00000   350%     -   49s
H    0     0                      14.0000000   54.00000   286%     -   49s

Explored 1 nodes (88041 simplex iterations) in 50.06 seconds (44.44 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 14 12 

Time limit reached
Best objective 1.400000000000e+01, best bound 5.400000000000e+01, gap 285.7143%

Wrote result file './lp_solutions/grafo2251.48.sol'

