
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 07:03:39 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6824.38.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/grafo6824.38.lp
Reading time = 0.13 seconds
: 79688 rows, 1888 columns, 240613 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 79688 rows, 1888 columns and 240613 nonzeros
Model fingerprint: 0x35d6dc18
Variable types: 41 continuous, 1847 integer (1847 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 31332 rows and 54 columns
Presolve time: 0.45s
Presolved: 48356 rows, 1834 columns, 147018 nonzeros
Variable types: 0 continuous, 1834 integer (1793 binary)
Root relaxation presolved: 29260 rows, 20930 columns, 108826 nonzeros


Root relaxation: objective 3.700000e+01, 3753 iterations, 1.72 seconds (1.60 work units)
Total elapsed time = 5.52s (DegenMoves)

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

     0     0   37.00000    0  425          -   37.00000      -     -    6s
H    0     0                      11.0000000   37.00000   236%     -    6s
     0     0   37.00000    0  613   11.00000   37.00000   236%     -   12s
H    0     0                      13.0000000   37.00000   185%     -   12s
     0     0   37.00000    0  632   13.00000   37.00000   185%     -   13s
     0     0   37.00000    0  227   13.00000   37.00000   185%     -   23s
H    0     0                      15.0000000   37.00000   147%     -   23s
H    0     0                      16.0000000   37.00000   131%     -   24s
     0     0   37.00000    0  429   16.00000   37.00000   131%     -   24s
     0     0   37.00000    0  361   16.00000   37.00000   131%     -   32s
     0     0   37.00000    0  315   16.00000   37.00000   131%     -   32s
     0     0   37.00000    0  329   16.00000   37.00000   131%     -   37s
     0     0   37.00000    0  295   16.00000   37.00000   131%     -   37s
     0     0   37.00000    0  390   16.00000   37.00000   131%     -   44s
     0     0   37.00000    0  399   16.00000   37.00000   131%     -   45s
     0     0   37.00000    0  325   16.00000   37.00000   131%     -   49s
     0     0   37.00000    0  281   16.00000   37.00000   131%     -   49s
     0     0          -    0        16.00000   37.00000   131%     -   50s

Cutting planes:
  Cover: 16
  Clique: 5
  MIR: 98
  StrongCG: 3
  GUB cover: 1
  Zero half: 57
  RLT: 47
  BQP: 1

Explored 1 nodes (64093 simplex iterations) in 50.09 seconds (44.20 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 16 15 13 11 

Time limit reached
Best objective 1.600000000000e+01, best bound 3.700000000000e+01, gap 131.2500%

Wrote result file './lp_solutions/grafo6824.38.sol'

