
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 05:56:37 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3906.49.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/grafo3906.49.lp
Reading time = 0.50 seconds
: 254850 rows, 3191 columns, 767391 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 254850 rows, 3191 columns and 767391 nonzeros
Model fingerprint: 0xc301444e
Variable types: 55 continuous, 3136 integer (3136 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 91707 rows and 15 columns
Presolve time: 2.18s
Presolved: 163143 rows, 3176 columns, 492664 nonzeros
Variable types: 0 continuous, 3176 integer (3121 binary)
Root relaxation presolved: 3165 rows, 166308 columns, 495840 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    8806    8.9521877e+01   0.000000e+00   1.219462e+08      5s
   24665    5.4980164e+01   0.000000e+00   2.099957e+05     10s
   38171    5.4845416e+01   0.000000e+00   1.945452e+05     15s
   52413    5.4745523e+01   0.000000e+00   1.715069e+06     20s
   65979    5.4717227e+01   0.000000e+00   3.632906e+04     25s
   79545    5.4704601e+01   0.000000e+00   8.105189e+03     30s
   92465    5.4697988e+01   0.000000e+00   3.133970e+04     35s
  106677    5.4694398e+01   0.000000e+00   1.504777e+03     40s
  113767    5.5000000e+01   0.000000e+00   0.000000e+00     43s
  113767    5.5000000e+01   0.000000e+00   0.000000e+00     43s
  113767    5.5000000e+01   0.000000e+00   0.000000e+00     43s

Root relaxation: objective 5.500000e+01, 113767 iterations, 40.48 seconds (24.22 work units)

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

     0     0   55.00000    0 1784          -   55.00000      -     -   50s
H    0     0                       8.0000000   55.00000   588%     -   50s

Explored 1 nodes (115666 simplex iterations) in 50.09 seconds (32.67 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 8 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.500000000000e+01, gap 587.5000%

Wrote result file './lp_solutions/grafo3906.49.sol'

