
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 03:45:48 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1888.15.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/grafo1888.15.lp
Reading time = 0.01 seconds
: 2462 rows, 273 columns, 7479 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 2462 rows, 273 columns and 7479 nonzeros
Model fingerprint: 0xb8b558fb
Variable types: 15 continuous, 258 integer (258 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 430 rows and 16 columns
Presolve time: 0.02s
Presolved: 2032 rows, 257 columns, 6300 nonzeros
Variable types: 0 continuous, 257 integer (242 binary)

Root relaxation: objective 9.000000e+00, 119 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    9.00000    0   17          -    9.00000      -     -    0s
H    0     0                       5.0000000    9.00000  80.0%     -    0s
H    0     0                       6.0000000    9.00000  50.0%     -    0s
     0     0    9.00000    0   37    6.00000    9.00000  50.0%     -    0s
     0     0    9.00000    0   34    6.00000    9.00000  50.0%     -    0s
     0     0    9.00000    0   33    6.00000    9.00000  50.0%     -    0s
     0     0    9.00000    0   24    6.00000    9.00000  50.0%     -    0s
     0     0    9.00000    0   24    6.00000    9.00000  50.0%     -    0s
     0     0    9.00000    0   28    6.00000    9.00000  50.0%     -    0s
     0     0    9.00000    0   28    6.00000    9.00000  50.0%     -    0s
     0     0    8.50000    0   56    6.00000    8.50000  41.7%     -    0s
     0     0    8.50000    0   55    6.00000    8.50000  41.7%     -    0s
     0     0    8.00000    0   31    6.00000    8.00000  33.3%     -    0s
     0     0    8.00000    0   31    6.00000    8.00000  33.3%     -    0s
     0     2    8.00000    0   31    6.00000    8.00000  33.3%     -    0s
  2032   293    7.00000   19   47    6.00000    7.00000  16.7%  73.4    5s
  4106    54    7.00000   15   41    6.00000    7.00000  16.7%  91.9   10s

Cutting planes:
  Gomory: 1
  Cover: 151
  MIR: 15
  Inf proof: 47
  Zero half: 5
  RLT: 17

Explored 4659 nodes (446240 simplex iterations) in 11.84 seconds (9.35 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 6 5 

Optimal solution found (tolerance 1.00e-04)
Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0000%

Wrote result file './lp_solutions/grafo1888.15.sol'

