
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 04:30:24 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6557.45.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/grafo6557.45.lp
Reading time = 0.24 seconds
: 114854 rows, 2655 columns, 346810 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 114854 rows, 2655 columns and 346810 nonzeros
Model fingerprint: 0xccec6e2c
Variable types: 50 continuous, 2605 integer (2605 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]
Found heuristic solution: objective 2.0000000
Presolve removed 26622 rows and 25 columns
Presolve time: 0.95s
Presolved: 88232 rows, 2630 columns, 267586 nonzeros
Variable types: 0 continuous, 2630 integer (2580 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2630 rows, 90862 columns, 270216 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16476    4.9945785e+01   0.000000e+00   1.705277e+05      5s
   33887    4.9921471e+01   0.000000e+00   1.972672e+04     10s
   49675    4.9914301e+01   0.000000e+00   1.963088e+03     15s
   65845    4.9911601e+01   0.000000e+00   1.215515e+03     20s
   80496    5.0000000e+01   0.000000e+00   0.000000e+00     25s
   80496    5.0000000e+01   0.000000e+00   0.000000e+00     25s

Root relaxation: objective 5.000000e+01, 80496 iterations, 23.61 seconds (15.57 work units)
Total elapsed time = 42.16s (DegenMoves)

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

     0     0   50.00000    0  475    8.00000   50.00000   525%     -   43s
     0     0          -    0         8.00000   50.00000   525%     -   50s

Cutting planes:
  Gomory: 44
  Cover: 45
  Clique: 8
  MIR: 163
  StrongCG: 1
  GUB cover: 9
  Zero half: 75
  RLT: 30

Explored 1 nodes (96219 simplex iterations) in 50.03 seconds (36.91 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 8 2 

Time limit reached
Best objective 8.000000000000e+00, best bound 5.000000000000e+01, gap 525.0000%

Wrote result file './lp_solutions/grafo6557.45.sol'

