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

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7112.47.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/grafo7112.47.lp
Reading time = 0.18 seconds
: 111548 rows, 2872 columns, 337113 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 111548 rows, 2872 columns and 337113 nonzeros
Model fingerprint: 0xc4c65668
Variable types: 54 continuous, 2818 integer (2818 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 18274 rows and 2 columns
Presolve time: 0.62s
Presolved: 93274 rows, 2870 columns, 282735 nonzeros
Variable types: 0 continuous, 2870 integer (2816 binary)
Root relaxation presolved: 2822 rows, 96096 columns, 285605 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   21034    5.0723457e+01   0.000000e+00   2.052598e+04      5s
   41230    5.0709449e+01   0.000000e+00   7.710717e+02     10s
   50424    5.1000000e+01   0.000000e+00   0.000000e+00     12s
   50424    5.1000000e+01   0.000000e+00   0.000000e+00     12s
   50424    5.1000000e+01   0.000000e+00   0.000000e+00     12s

Root relaxation: objective 5.100000e+01, 50424 iterations, 11.63 seconds (9.58 work units)
Total elapsed time = 32.22s (DegenMoves)
Total elapsed time = 39.48s (DegenMoves)
Total elapsed time = 43.22s (DegenMoves)

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

     0     0   51.00000    0  785          -   51.00000      -     -   44s
H    0     0                       3.0000000   51.00000  1600%     -   48s
     0     0          -    0         3.00000   51.00000  1600%     -   50s

Cutting planes:
  Gomory: 28
  Cover: 1
  MIR: 65
  StrongCG: 1
  Zero half: 10
  RLT: 13

Explored 1 nodes (77824 simplex iterations) in 50.02 seconds (54.58 work units)
Thread count was 8 (of 8 available processors)

Solution count 1: 3 

Time limit reached
Best objective 3.000000000000e+00, best bound 5.100000000000e+01, gap 1600.0000%

Wrote result file './lp_solutions/grafo7112.47.sol'

