
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 03:41:51 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1821.19.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/grafo1821.19.lp
Reading time = 0.02 seconds
: 4229 rows, 367 columns, 12811 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 4229 rows, 367 columns and 12811 nonzeros
Model fingerprint: 0xed53cd3b
Variable types: 16 continuous, 351 integer (351 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 1.0000000
Presolve removed 753 rows and 12 columns
Presolve time: 0.05s
Presolved: 3476 rows, 355 columns, 10654 nonzeros
Variable types: 0 continuous, 355 integer (339 binary)
Found heuristic solution: objective 3.0000000

Root relaxation: objective 1.200000e+01, 237 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   46    3.00000   12.00000   300%     -    0s
H    0     0                       6.0000000   12.00000   100%     -    0s
H    0     0                       8.0000000   12.00000  50.0%     -    0s
     0     0   12.00000    0   94    8.00000   12.00000  50.0%     -    0s
     0     0   12.00000    0   95    8.00000   12.00000  50.0%     -    0s
     0     0   11.66667    0   77    8.00000   11.66667  45.8%     -    0s
     0     0   11.66667    0   76    8.00000   11.66667  45.8%     -    0s
     0     0   11.66667    0   71    8.00000   11.66667  45.8%     -    0s
     0     0   11.66667    0   73    8.00000   11.66667  45.8%     -    0s
     0     0   11.33333    0   73    8.00000   11.33333  41.7%     -    0s
     0     0   11.33333    0   71    8.00000   11.33333  41.7%     -    0s
     0     0   11.33333    0   62    8.00000   11.33333  41.7%     -    0s
     0     0   11.33333    0   78    8.00000   11.33333  41.7%     -    0s
     0     0   11.33333    0   62    8.00000   11.33333  41.7%     -    0s
     0     0   11.33333    0   58    8.00000   11.33333  41.7%     -    0s
     0     2   11.33333    0   52    8.00000   11.33333  41.7%     -    1s

Cutting planes:
  Gomory: 2
  Cover: 30
  MIR: 82
  StrongCG: 4
  Inf proof: 70
  Zero half: 7
  RLT: 32

Explored 3244 nodes (83356 simplex iterations) in 5.00 seconds (2.76 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 8 6 3 1 

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/grafo1821.19.sol'

