
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 07:27:26 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo667.12.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/grafo667.12.lp
Reading time = 0.00 seconds
: 1414 rows, 147 columns, 4239 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 1414 rows, 147 columns and 4239 nonzeros
Model fingerprint: 0xc2834452
Variable types: 9 continuous, 138 integer (138 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 -0.0000000
Presolve removed 544 rows and 9 columns
Presolve time: 0.01s
Presolved: 870 rows, 138 columns, 2682 nonzeros
Variable types: 0 continuous, 138 integer (129 binary)
Found heuristic solution: objective 1.0000000

Root relaxation: objective 7.000000e+00, 120 iterations, 0.01 seconds (0.00 work units)

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

     0     0    7.00000    0   46    1.00000    7.00000   600%     -    0s
H    0     0                       3.0000000    7.00000   133%     -    0s
     0     0    7.00000    0   51    3.00000    7.00000   133%     -    0s
     0     0    7.00000    0   51    3.00000    7.00000   133%     -    0s
     0     0    7.00000    0   26    3.00000    7.00000   133%     -    0s
     0     0    6.25000    0   43    3.00000    6.25000   108%     -    0s
     0     0    6.00000    0   42    3.00000    6.00000   100%     -    0s
     0     0    6.00000    0   41    3.00000    6.00000   100%     -    0s
     0     0    6.00000    0   43    3.00000    6.00000   100%     -    0s
     0     0    5.66667    0   41    3.00000    5.66667  88.9%     -    0s
     0     0    5.50000    0   38    3.00000    5.50000  83.3%     -    0s
     0     0    5.50000    0   36    3.00000    5.50000  83.3%     -    0s
     0     0    5.50000    0   37    3.00000    5.50000  83.3%     -    0s
     0     0    5.50000    0   37    3.00000    5.50000  83.3%     -    0s
     0     2    5.50000    0   37    3.00000    5.50000  83.3%     -    0s
H   31    38                       4.0000000    5.50000  37.5%  30.5    0s

Cutting planes:
  Gomory: 1
  Cover: 14
  MIR: 21
  StrongCG: 1
  Inf proof: 18
  Zero half: 8
  RLT: 6

Explored 603 nodes (18996 simplex iterations) in 1.11 seconds (0.43 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 4 3 1 -0 

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0000%

Wrote result file './lp_solutions/grafo667.12.sol'

