
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 14:25:02 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo2180.27.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/grafo2180.27.lp
Reading time = 0.02 seconds
: 10632 rows, 637 columns, 32151 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 10632 rows, 637 columns and 32151 nonzeros
Model fingerprint: 0x532ef32b
Variable types: 20 continuous, 617 integer (617 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 3.0000000
Presolve removed 1458 rows and 13 columns
Presolve time: 0.07s
Presolved: 9174 rows, 624 columns, 27940 nonzeros
Variable types: 0 continuous, 624 integer (604 binary)
Found heuristic solution: objective 4.0000000

Root relaxation: objective 1.100000e+01, 246 iterations, 0.03 seconds (0.02 work units)

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

     0     0   11.00000    0   55    4.00000   11.00000   175%     -    0s
H    0     0                       6.0000000   11.00000  83.3%     -    0s
     0     0   11.00000    0   59    6.00000   11.00000  83.3%     -    0s
H    0     0                       7.0000000   11.00000  57.1%     -    0s
     0     0   11.00000    0   60    7.00000   11.00000  57.1%     -    0s
     0     0   11.00000    0   24    7.00000   11.00000  57.1%     -    0s
     0     0   11.00000    0   24    7.00000   11.00000  57.1%     -    0s
     0     0   11.00000    0   28    7.00000   11.00000  57.1%     -    0s
     0     0   11.00000    0   27    7.00000   11.00000  57.1%     -    0s
     0     0   11.00000    0   37    7.00000   11.00000  57.1%     -    0s
     0     0   11.00000    0   46    7.00000   11.00000  57.1%     -    0s
     0     0   11.00000    0   28    7.00000   11.00000  57.1%     -    0s
     0     0   11.00000    0   28    7.00000   11.00000  57.1%     -    0s
     0     0   11.00000    0   34    7.00000   11.00000  57.1%     -    0s
H    0     0                       8.0000000   11.00000  37.5%     -    1s
     0     0   10.80000    0   33    8.00000   10.80000  35.0%     -    1s
     0     0   10.75000    0   43    8.00000   10.75000  34.4%     -    1s
     0     0   10.75000    0   33    8.00000   10.75000  34.4%     -    1s
     0     2   10.75000    0   30    8.00000   10.75000  34.4%     -    1s
H 1462   222                       9.0000000   10.42857  15.9%  47.9    3s

Cutting planes:
  Gomory: 2
  Cover: 12
  MIR: 55
  StrongCG: 2
  GUB cover: 5
  Inf proof: 60
  Zero half: 3
  RLT: 20
  Relax-and-lift: 1

Explored 2005 nodes (89164 simplex iterations) in 4.61 seconds (5.07 work units)
Thread count was 8 (of 8 available processors)

Solution count 6: 9 8 7 ... 3

Optimal solution found (tolerance 1.00e-04)
Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0000%

Wrote result file './lp_solutions/grafo2180.27.sol'

