
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 03:12:16 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo127.21.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/grafo127.21.lp
Reading time = 0.01 seconds
: 4791 rows, 349 columns, 14452 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 4791 rows, 349 columns and 14452 nonzeros
Model fingerprint: 0xce431b0d
Variable types: 13 continuous, 336 integer (336 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 4.0000000
Presolve removed 920 rows and 3 columns
Presolve time: 0.04s
Presolved: 3871 rows, 346 columns, 11734 nonzeros
Variable types: 0 continuous, 346 integer (333 binary)

Root relaxation: objective 1.000000e+01, 187 iterations, 0.02 seconds (0.01 work units)

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

     0     0   10.00000    0   63    4.00000   10.00000   150%     -    0s
H    0     0                       5.0000000   10.00000   100%     -    0s
     0     0   10.00000    0   71    5.00000   10.00000   100%     -    0s
     0     0   10.00000    0   71    5.00000   10.00000   100%     -    0s
     0     0    9.50000    0   31    5.00000    9.50000  90.0%     -    0s
     0     0    9.50000    0   31    5.00000    9.50000  90.0%     -    0s
     0     0    9.00000    0   37    5.00000    9.00000  80.0%     -    0s
H    0     0                       6.0000000    9.00000  50.0%     -    0s
     0     0    9.00000    0   35    6.00000    9.00000  50.0%     -    0s
     0     0    9.00000    0   37    6.00000    9.00000  50.0%     -    0s
     0     0    9.00000    0   38    6.00000    9.00000  50.0%     -    0s
     0     0    9.00000    0   38    6.00000    9.00000  50.0%     -    0s
     0     0    9.00000    0   39    6.00000    9.00000  50.0%     -    0s
     0     0    8.66667    0   46    6.00000    8.66667  44.4%     -    0s
     0     0    8.66667    0   42    6.00000    8.66667  44.4%     -    0s
     0     0    8.50000    0   44    6.00000    8.50000  41.7%     -    0s
     0     0    8.50000    0   44    6.00000    8.50000  41.7%     -    0s
     0     2    8.50000    0   44    6.00000    8.50000  41.7%     -    1s

Cutting planes:
  Cover: 9
  Clique: 1
  MIR: 44
  StrongCG: 2
  Inf proof: 35
  Zero half: 6
  Mod-K: 2
  RLT: 16

Explored 669 nodes (19043 simplex iterations) in 2.08 seconds (0.98 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 6 5 4 

Optimal solution found (tolerance 1.00e-04)
Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0000%

Wrote result file './lp_solutions/grafo127.21.sol'

