
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 05:04:38 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6910.41.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/grafo6910.41.lp
Reading time = 0.23 seconds
: 143282 rows, 2281 columns, 431714 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 143282 rows, 2281 columns and 431714 nonzeros
Model fingerprint: 0xb7f273b0
Variable types: 46 continuous, 2235 integer (2235 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 51460 rows and 22 columns
Presolve time: 0.92s
Presolved: 91822 rows, 2259 columns, 277915 nonzeros
Variable types: 0 continuous, 2259 integer (2213 binary)
Root relaxation presolved: 2250 rows, 94072 columns, 280174 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22088    5.0856382e+01   0.000000e+00   1.306347e+05      5s
   47543    4.9776041e+01   0.000000e+00   9.504079e+03     10s
   72492    4.9762325e+01   0.000000e+00   3.045401e+03     15s
   84707    5.0000000e+01   0.000000e+00   0.000000e+00     17s
   84707    5.0000000e+01   0.000000e+00   0.000000e+00     17s
   84707    5.0000000e+01   0.000000e+00   0.000000e+00     18s

Root relaxation: objective 5.000000e+01, 84707 iterations, 16.38 seconds (11.84 work units)
Total elapsed time = 32.59s (DegenMoves)
Total elapsed time = 43.48s (DegenMoves)

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

     0     0   50.00000    0  481          -   50.00000      -     -   44s
H    0     0                       6.0000000   50.00000   733%     -   45s
H    0     0                       7.0000000   50.00000   614%     -   45s
     0     0          -    0         7.00000   50.00000   614%     -   50s

Cutting planes:
  Gomory: 41
  Cover: 49
  Clique: 16
  MIR: 100
  GUB cover: 3
  Zero half: 76
  RLT: 69
  BQP: 1

Explored 1 nodes (108628 simplex iterations) in 50.01 seconds (55.27 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 6 

Time limit reached
Best objective 7.000000000000e+00, best bound 5.000000000000e+01, gap 614.2857%

Wrote result file './lp_solutions/grafo6910.41.sol'

