
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 05:08:28 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1475.47.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/grafo1475.47.lp
Reading time = 0.55 seconds
: 260218 rows, 3037 columns, 783360 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 260218 rows, 3037 columns and 783360 nonzeros
Model fingerprint: 0x06dddf25
Variable types: 54 continuous, 2983 integer (2983 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 99244 rows and 30 columns
Presolve time: 2.49s
Presolved: 160974 rows, 3007 columns, 486086 nonzeros
Variable types: 0 continuous, 3007 integer (2953 binary)
Root relaxation presolved: 3007 rows, 163981 columns, 489093 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    6882    1.0352467e+02   0.000000e+00   8.843348e+05      5s
   22793    5.8756240e+01   0.000000e+00   5.735332e+05     10s
   36787    5.7692827e+01   0.000000e+00   3.324445e+04     15s
   50107    5.7667128e+01   0.000000e+00   2.299727e+04     20s
   64093    5.7655479e+01   0.000000e+00   1.159101e+04     25s
   78745    5.7650796e+01   0.000000e+00   4.471363e+02     30s
   90580    5.8000000e+01   0.000000e+00   0.000000e+00     34s
   90580    5.8000000e+01   0.000000e+00   0.000000e+00     35s

Root relaxation: objective 5.800000e+01, 90580 iterations, 31.49 seconds (18.91 work units)

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

     0     0   58.00000    0 1624          -   58.00000      -     -   50s
H    0     0                       6.0000000   58.00000   867%     -   50s

Explored 1 nodes (95767 simplex iterations) in 50.10 seconds (35.10 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 6 

Time limit reached
Best objective 6.000000000000e+00, best bound 5.800000000000e+01, gap 866.6667%

Wrote result file './lp_solutions/grafo1475.47.sol'

