
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 08:57:29 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6352.44.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/grafo6352.44.lp
Reading time = 0.28 seconds
: 172874 rows, 2901 columns, 521325 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 172874 rows, 2901 columns and 521325 nonzeros
Model fingerprint: 0x4c8b1a64
Variable types: 55 continuous, 2846 integer (2846 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 52526 rows and 25 columns
Presolve time: 1.25s
Presolved: 120348 rows, 2876 columns, 364192 nonzeros
Variable types: 0 continuous, 2876 integer (2821 binary)
Root relaxation presolved: 2876 rows, 123224 columns, 367068 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   16720    6.4889567e+01   0.000000e+00   1.262428e+05      5s
   34906    6.2737461e+01   0.000000e+00   4.563803e+04     10s
   53036    6.2717247e+01   0.000000e+00   1.627205e+03     15s
   60250    6.3000000e+01   0.000000e+00   0.000000e+00     17s
   60250    6.3000000e+01   0.000000e+00   0.000000e+00     17s

Root relaxation: objective 6.300000e+01, 60250 iterations, 15.65 seconds (12.30 work units)
Total elapsed time = 38.67s (DegenMoves)
Total elapsed time = 40.92s (DegenMoves)

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

     0     0   63.00000    0  645          -   63.00000      -     -   42s
H    0     0                       7.0000000   63.00000   800%     -   42s
H    0     0                       9.0000000   63.00000   600%     -   42s
     0     0          -    0         9.00000   63.00000   600%     -   50s

Cutting planes:
  Gomory: 54
  Cover: 46
  Clique: 25
  MIR: 112
  StrongCG: 1
  GUB cover: 9
  Zero half: 54
  RLT: 43
  BQP: 2

Explored 1 nodes (79563 simplex iterations) in 50.03 seconds (47.62 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 9 7 

Time limit reached
Best objective 9.000000000000e+00, best bound 6.300000000000e+01, gap 600.0000%

Wrote result file './lp_solutions/grafo6352.44.sol'

