
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 03:16:31 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo140.22.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/grafo140.22.lp
Reading time = 0.01 seconds
: 6031 rows, 481 columns, 18280 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 6031 rows, 481 columns and 18280 nonzeros
Model fingerprint: 0xcc2188a3
Variable types: 19 continuous, 462 integer (462 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 689 rows and 21 columns
Presolve time: 0.05s
Presolved: 5342 rows, 460 columns, 16366 nonzeros
Variable types: 0 continuous, 460 integer (441 binary)
Found heuristic solution: objective 2.0000000

Root relaxation: objective 1.100000e+01, 147 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   11.00000    0   52    2.00000   11.00000   450%     -    0s
H    0     0                       5.0000000   11.00000   120%     -    0s
     0     0   11.00000    0   70    5.00000   11.00000   120%     -    0s
     0     0   11.00000    0   67    5.00000   11.00000   120%     -    0s
     0     0   11.00000    0   63    5.00000   11.00000   120%     -    0s
H    0     0                       7.0000000   11.00000  57.1%     -    0s
     0     0   11.00000    0   63    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   47    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   35    7.00000   11.00000  57.1%     -    0s
H    0     0                       8.0000000   11.00000  37.5%     -    0s
     0     0   11.00000    0   38    8.00000   11.00000  37.5%     -    0s
     0     0   11.00000    0   31    8.00000   11.00000  37.5%     -    1s
     0     0   11.00000    0   33    8.00000   11.00000  37.5%     -    1s
     0     0   11.00000    0   37    8.00000   11.00000  37.5%     -    1s
     0     0   11.00000    0   31    8.00000   11.00000  37.5%     -    1s
     0     2   11.00000    0   31    8.00000   11.00000  37.5%     -    1s
   437    92     cutoff    7         8.00000    9.00000  12.5%  70.4    5s

Cutting planes:
  Cover: 23
  MIR: 53
  StrongCG: 3
  GUB cover: 1
  Inf proof: 21
  Zero half: 6
  RLT: 19

Explored 885 nodes (101763 simplex iterations) in 7.08 seconds (4.52 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 8 7 5 2 

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/grafo140.22.sol'

