
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 07:50:19 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo755.20.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/grafo755.20.lp
Reading time = 0.01 seconds
: 4782 rows, 421 columns, 14532 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 4782 rows, 421 columns and 14532 nonzeros
Model fingerprint: 0x12e302ee
Variable types: 18 continuous, 403 integer (403 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 526 rows and 10 columns
Presolve time: 0.05s
Presolved: 4256 rows, 411 columns, 13038 nonzeros
Variable types: 0 continuous, 411 integer (393 binary)

Root relaxation: objective 1.200000e+01, 224 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   12.00000    0   98          -   12.00000      -     -    0s
H    0     0                       6.0000000   12.00000   100%     -    0s
H    0     0                       7.0000000   12.00000  71.4%     -    0s
     0     0   12.00000    0   93    7.00000   12.00000  71.4%     -    0s
     0     0   11.00000    0   50    7.00000   11.00000  57.1%     -    0s
     0     0   11.00000    0   52    7.00000   11.00000  57.1%     -    0s
     0     0   11.00000    0   58    7.00000   11.00000  57.1%     -    0s
     0     0   11.00000    0   44    7.00000   11.00000  57.1%     -    0s
     0     0   11.00000    0   48    7.00000   11.00000  57.1%     -    1s
     0     0   11.00000    0   46    7.00000   11.00000  57.1%     -    1s
     0     0   11.00000    0   65    7.00000   11.00000  57.1%     -    1s
     0     0   11.00000    0   61    7.00000   11.00000  57.1%     -    1s
     0     0   11.00000    0   62    7.00000   11.00000  57.1%     -    1s
     0     0   11.00000    0   50    7.00000   11.00000  57.1%     -    1s
     0     2   11.00000    0   50    7.00000   11.00000  57.1%     -    1s
*  932   408              26       8.0000000   11.00000  37.5%  23.9    3s

Cutting planes:
  Gomory: 1
  Cover: 9
  Clique: 1
  MIR: 88
  StrongCG: 5
  Inf proof: 37
  Zero half: 4
  RLT: 28

Explored 2269 nodes (48263 simplex iterations) in 4.43 seconds (2.13 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 8 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/grafo755.20.sol'

