
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 08:59:10 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6387.44.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/grafo6387.44.lp
Reading time = 0.24 seconds
: 150152 rows, 2962 columns, 453283 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 150152 rows, 2962 columns and 453283 nonzeros
Model fingerprint: 0xe1276b9b
Variable types: 56 continuous, 2906 integer (2906 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]
Found heuristic solution: objective 4.0000000
Presolve removed 38279 rows and 30 columns
Presolve time: 1.09s
Presolved: 111873 rows, 2932 columns, 339011 nonzeros
Variable types: 0 continuous, 2932 integer (2876 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2920 rows, 114793 columns, 341943 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   15070    5.8757957e+01   0.000000e+00   1.316002e+05      5s
   33990    5.5646892e+01   0.000000e+00   1.299510e+04     10s
   52756    5.5620662e+01   0.000000e+00   3.539595e+04     15s
   70072    5.5614351e+01   0.000000e+00   4.060460e+02     20s
   80140    5.6000000e+01   0.000000e+00   0.000000e+00     23s
   80140    5.6000000e+01   0.000000e+00   0.000000e+00     23s
   80140    5.6000000e+01   0.000000e+00   0.000000e+00     23s

Root relaxation: objective 5.600000e+01, 80140 iterations, 21.65 seconds (17.15 work units)

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

     0     0   56.00000    0 1535   11.00000   56.00000   409%     -   50s

Explored 1 nodes (92714 simplex iterations) in 50.04 seconds (44.22 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 11 4 

Time limit reached
Best objective 1.100000000000e+01, best bound 5.600000000000e+01, gap 409.0909%

Wrote result file './lp_solutions/grafo6387.44.sol'

