
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 05:02:25 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3520.40.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/grafo3520.40.lp
Reading time = 0.15 seconds
: 91669 rows, 2063 columns, 276683 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 91669 rows, 2063 columns and 276683 nonzeros
Model fingerprint: 0xa436886c
Variable types: 44 continuous, 2019 integer (2019 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 27546 rows and 19 columns
Presolve time: 0.65s
Presolved: 64123 rows, 2044 columns, 194376 nonzeros
Variable types: 0 continuous, 2044 integer (2000 binary)
Root relaxation presolved: 2044 rows, 66167 columns, 196420 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26415    4.3786412e+01   0.000000e+00   1.269299e+03      5s
   37593    4.4000000e+01   0.000000e+00   0.000000e+00      7s
   37593    4.4000000e+01   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 4.400000e+01, 37593 iterations, 6.17 seconds (4.78 work units)
Total elapsed time = 12.88s (DegenMoves)

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

     0     0   44.00000    0  379          -   44.00000      -     -   14s
H    0     0                       7.0000000   44.00000   529%     -   15s
     0     0   44.00000    0  618    7.00000   44.00000   529%     -   20s
     0     0   44.00000    0  627    7.00000   44.00000   529%     -   21s
H    0     0                       9.0000000   44.00000   389%     -   44s
H    0     0                      12.0000000   44.00000   267%     -   44s
H    0     0                      14.0000000   44.00000   214%     -   44s
     0     0   44.00000    0  587   14.00000   44.00000   214%     -   44s
     0     0   44.00000    0  547   14.00000   44.00000   214%     -   45s
     0     0          -    0        14.00000   44.00000   214%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 25
  Clique: 22
  MIR: 136
  GUB cover: 2
  Zero half: 78
  RLT: 63
  BQP: 2

Explored 1 nodes (73496 simplex iterations) in 50.08 seconds (46.91 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 14 12 9 7 

Time limit reached
Best objective 1.400000000000e+01, best bound 4.400000000000e+01, gap 214.2857%

Wrote result file './lp_solutions/grafo3520.40.sol'

