
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:21:17 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6839.47.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/grafo6839.47.lp
Reading time = 0.10 seconds
: 61748 rows, 2130 columns, 186641 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 61748 rows, 2130 columns and 186641 nonzeros
Model fingerprint: 0x18dcb207
Variable types: 41 continuous, 2089 integer (2089 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 4838 rows and 26 columns
Presolve time: 0.40s
Presolved: 56910 rows, 2104 columns, 172426 nonzeros
Variable types: 0 continuous, 2104 integer (2063 binary)
Root relaxation presolved: 30035 rows, 28979 columns, 118676 nonzeros


Root relaxation: objective 3.100000e+01, 4143 iterations, 2.20 seconds (1.95 work units)
Total elapsed time = 5.23s (DegenMoves)

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

     0     0   31.00000    0  322          -   31.00000      -     -    9s
H    0     0                       8.0000000   31.00000   287%     -   10s
     0     0   31.00000    0  594    8.00000   31.00000   287%     -   14s
     0     0   31.00000    0  560    8.00000   31.00000   287%     -   14s
H    0     0                      12.0000000   31.00000   158%     -   24s
H    0     0                      14.0000000   31.00000   121%     -   24s
     0     0   31.00000    0  309   14.00000   31.00000   121%     -   24s
     0     0   31.00000    0  276   14.00000   31.00000   121%     -   25s
     0     0   31.00000    0  340   14.00000   31.00000   121%     -   29s
     0     0   31.00000    0  293   14.00000   31.00000   121%     -   30s
     0     0   31.00000    0  280   14.00000   31.00000   121%     -   37s
     0     0   31.00000    0  265   14.00000   31.00000   121%     -   38s
H    0     0                      16.0000000   31.00000  93.7%     -   43s
     0     0   31.00000    0  256   16.00000   31.00000  93.7%     -   43s
     0     0   31.00000    0  219   16.00000   31.00000  93.7%     -   44s
     0     0   31.00000    0  244   16.00000   31.00000  93.7%     -   45s
     0     0   31.00000    0  301   16.00000   31.00000  93.7%     -   46s
     0     0   31.00000    0  385   16.00000   31.00000  93.7%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 1
  Cover: 21
  Clique: 3
  MIR: 89
  GUB cover: 1
  Zero half: 24
  RLT: 35
  BQP: 2

Explored 1 nodes (67947 simplex iterations) in 50.08 seconds (45.79 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 16 14 12 8 

Time limit reached
Best objective 1.600000000000e+01, best bound 3.100000000000e+01, gap 93.7500%

Wrote result file './lp_solutions/grafo6839.47.sol'

