
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 19:35:04 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo878.13.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/grafo878.13.lp
Reading time = 0.02 seconds
: 7802 rows, 313 columns, 23596 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 7802 rows, 313 columns and 23596 nonzeros
Model fingerprint: 0xfae2c4fe
Variable types: 16 continuous, 297 integer (297 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 4037 rows and 5 columns
Presolve time: 0.05s
Presolved: 3765 rows, 308 columns, 11659 nonzeros
Variable types: 0 continuous, 308 integer (292 binary)

Root relaxation: objective 1.000000e+01, 224 iterations, 0.02 seconds (0.02 work units)

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

     0     0   10.00000    0   36          -   10.00000      -     -    0s
H    0     0                       6.0000000   10.00000  66.7%     -    0s
H    0     0                       7.0000000   10.00000  42.9%     -    0s
     0     0   10.00000    0   76    7.00000   10.00000  42.9%     -    0s
     0     0   10.00000    0   75    7.00000   10.00000  42.9%     -    0s
     0     0   10.00000    0   66    7.00000   10.00000  42.9%     -    0s
     0     0   10.00000    0   66    7.00000   10.00000  42.9%     -    0s
     0     0   10.00000    0   34    7.00000   10.00000  42.9%     -    0s
     0     0   10.00000    0   58    7.00000   10.00000  42.9%     -    0s
     0     0   10.00000    0   64    7.00000   10.00000  42.9%     -    0s
     0     0   10.00000    0   58    7.00000   10.00000  42.9%     -    0s
     0     0   10.00000    0   40    7.00000   10.00000  42.9%     -    0s
     0     0   10.00000    0   59    7.00000   10.00000  42.9%     -    0s
     0     0   10.00000    0   61    7.00000   10.00000  42.9%     -    1s
     0     0   10.00000    0   61    7.00000   10.00000  42.9%     -    1s
     0     2   10.00000    0   61    7.00000   10.00000  42.9%     -    1s
  1337   678    8.00000   35   28    7.00000   10.00000  42.9%  62.6    5s
  1974   917    8.50000   32   79    7.00000   10.00000  42.9%  67.0   10s
* 2924   805              33       8.0000000   10.00000  25.0%  70.6   12s

Cutting planes:
  Lift-and-project: 1
  Cover: 3
  Clique: 1
  MIR: 2
  Flow cover: 13
  Inf proof: 2
  Zero half: 4
  RLT: 6

Explored 4225 nodes (247901 simplex iterations) in 13.06 seconds (9.89 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 8 7 7 ... 6

Optimal solution found (tolerance 1.00e-04)
Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0000%

Wrote result file './lp_solutions/grafo878.13.sol'

