
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:20:27 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6823.47.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/grafo6823.47.lp
Reading time = 0.18 seconds
: 114239 rows, 2884 columns, 345222 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 114239 rows, 2884 columns and 345222 nonzeros
Model fingerprint: 0x9a3abdca
Variable types: 54 continuous, 2830 integer (2830 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 18854 rows and 47 columns
Presolve time: 0.78s
Presolved: 95385 rows, 2837 columns, 289059 nonzeros
Variable types: 0 continuous, 2837 integer (2783 binary)
Root relaxation presolved: 2837 rows, 98222 columns, 291896 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   20181    5.4984104e+01   0.000000e+00   9.334272e+04      5s
   39251    5.4964408e+01   0.000000e+00   1.920292e+04     10s
   57863    5.4955381e+01   0.000000e+00   7.286496e+03     15s
   75683    5.4952191e+01   0.000000e+00   3.734869e+02     20s
   80974    5.5000000e+01   0.000000e+00   0.000000e+00     22s
   80974    5.5000000e+01   0.000000e+00   0.000000e+00     22s

Root relaxation: objective 5.500000e+01, 80974 iterations, 20.51 seconds (17.66 work units)
Total elapsed time = 46.12s (DegenMoves)

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

     0     0   55.00000    0  894          -   55.00000      -     -   50s
H    0     0                       6.0000000   55.00000   817%     -   50s

Explored 1 nodes (100327 simplex iterations) in 50.05 seconds (48.36 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 6 

Time limit reached
Best objective 6.000000000000e+00, best bound 5.500000000000e+01, gap 816.6667%

Wrote result file './lp_solutions/grafo6823.47.sol'

