
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 13:55:23 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo1970.15.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/grafo1970.15.lp
Reading time = 0.01 seconds
: 3230 rows, 289 columns, 9815 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 3230 rows, 289 columns and 9815 nonzeros
Model fingerprint: 0x478c74d3
Variable types: 15 continuous, 274 integer (274 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 987 rows and 11 columns
Presolve time: 0.04s
Presolved: 2243 rows, 278 columns, 6973 nonzeros
Variable types: 0 continuous, 278 integer (263 binary)

Root relaxation: objective 9.000000e+00, 151 iterations, 0.01 seconds (0.01 work units)

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

     0     0    9.00000    0   26          -    9.00000      -     -    0s
H    0     0                       6.0000000    9.00000  50.0%     -    0s
     0     0    9.00000    0   61    6.00000    9.00000  50.0%     -    0s
     0     0    9.00000    0   44    6.00000    9.00000  50.0%     -    0s
     0     0    8.00000    0   57    6.00000    8.00000  33.3%     -    0s
     0     0    8.00000    0   54    6.00000    8.00000  33.3%     -    0s
     0     0    8.00000    0   47    6.00000    8.00000  33.3%     -    0s
     0     0    8.00000    0   49    6.00000    8.00000  33.3%     -    0s
     0     0    8.00000    0   24    6.00000    8.00000  33.3%     -    0s
     0     0    8.00000    0   55    6.00000    8.00000  33.3%     -    0s
     0     0    8.00000    0   47    6.00000    8.00000  33.3%     -    0s
     0     0    8.00000    0   24    6.00000    8.00000  33.3%     -    0s
H    0     0                       7.0000000    8.00000  14.3%     -    0s
     0     2    8.00000    0   19    7.00000    8.00000  14.3%     -    0s

Cutting planes:
  Gomory: 3
  Cover: 20
  Clique: 2
  MIR: 23
  StrongCG: 3
  Inf proof: 48
  Zero half: 4
  RLT: 17

Explored 1018 nodes (35132 simplex iterations) in 2.15 seconds (0.97 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 6 

Optimal solution found (tolerance 1.00e-04)
Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0000%

Wrote result file './lp_solutions/grafo1970.15.sol'

