
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 13:09:21 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1738.15.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/grafo1738.15.lp
Reading time = 0.01 seconds
: 2823 rows, 254 columns, 8559 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 2823 rows, 254 columns and 8559 nonzeros
Model fingerprint: 0x1d1c21fa
Variable types: 13 continuous, 241 integer (241 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 923 rows and 4 columns
Presolve time: 0.04s
Presolved: 1900 rows, 250 columns, 5876 nonzeros
Variable types: 0 continuous, 250 integer (237 binary)

Root relaxation: objective 8.000000e+00, 155 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    8.00000    0   48          -    8.00000      -     -    0s
H    0     0                       4.0000000    8.00000   100%     -    0s
     0     0    8.00000    0   61    4.00000    8.00000   100%     -    0s
H    0     0                       5.0000000    8.00000  60.0%     -    0s
     0     0    8.00000    0   61    5.00000    8.00000  60.0%     -    0s
     0     0    7.00000    0   23    5.00000    7.00000  40.0%     -    0s
     0     0    7.00000    0   26    5.00000    7.00000  40.0%     -    0s
     0     0    7.00000    0   26    5.00000    7.00000  40.0%     -    0s
     0     0    7.00000    0   28    5.00000    7.00000  40.0%     -    0s
     0     0    7.00000    0   28    5.00000    7.00000  40.0%     -    0s
     0     0    7.00000    0   39    5.00000    7.00000  40.0%     -    0s
     0     0    7.00000    0   37    5.00000    7.00000  40.0%     -    0s
     0     0    7.00000    0   37    5.00000    7.00000  40.0%     -    0s
     0     0    7.00000    0   37    5.00000    7.00000  40.0%     -    1s
H    0     0                       6.0000000    7.00000  16.7%     -    1s
     0     2    7.00000    0   31    6.00000    7.00000  16.7%     -    1s

Cutting planes:
  Lift-and-project: 2
  Cover: 22
  Clique: 7
  MIR: 30
  Inf proof: 50
  Zero half: 8
  RLT: 18
  BQP: 3
  PSD: 2

Explored 1033 nodes (34097 simplex iterations) in 2.93 seconds (0.83 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 6 5 4 

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/grafo1738.15.sol'

