
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 05:38:10 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo321.15.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/grafo321.15.lp
Reading time = 0.01 seconds
: 1921 rows, 196 columns, 5776 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 1921 rows, 196 columns and 5776 nonzeros
Model fingerprint: 0xd20c0466
Variable types: 10 continuous, 186 integer (186 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 508 rows and 9 columns
Presolve time: 0.02s
Presolved: 1413 rows, 187 columns, 4327 nonzeros
Variable types: 0 continuous, 187 integer (177 binary)
Found heuristic solution: objective 2.0000000

Root relaxation: objective 7.000000e+00, 94 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   39    2.00000    7.00000   250%     -    0s
H    0     0                       4.0000000    7.00000  75.0%     -    0s
     0     0    7.00000    0   38    4.00000    7.00000  75.0%     -    0s
     0     0    7.00000    0   38    4.00000    7.00000  75.0%     -    0s
     0     0    7.00000    0   26    4.00000    7.00000  75.0%     -    0s
     0     0    7.00000    0   36    4.00000    7.00000  75.0%     -    0s
     0     0    6.66667    0   35    4.00000    6.66667  66.7%     -    0s
     0     0    6.50000    0   35    4.00000    6.50000  62.5%     -    0s
     0     0    6.25000    0   34    4.00000    6.25000  56.2%     -    0s
     0     0    6.00000    0   25    4.00000    6.00000  50.0%     -    0s
     0     0    6.00000    0   21    4.00000    6.00000  50.0%     -    0s
     0     0    6.00000    0   38    4.00000    6.00000  50.0%     -    0s
     0     0    6.00000    0   41    4.00000    6.00000  50.0%     -    0s
     0     0    5.66667    0   44    4.00000    5.66667  41.7%     -    0s
     0     0    5.66667    0   44    4.00000    5.66667  41.7%     -    0s
H    0     0                       5.0000000    5.66667  13.3%     -    0s

Cutting planes:
  Cover: 3
  MIR: 6
  Inf proof: 1
  Zero half: 1
  RLT: 6

Explored 1 nodes (1714 simplex iterations) in 0.38 seconds (0.15 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 5 4 2 -0 

Optimal solution found (tolerance 1.00e-04)
Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0000%

Wrote result file './lp_solutions/grafo321.15.sol'

