
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:22:57 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6231.39.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/grafo6231.39.lp
Reading time = 0.21 seconds
: 129483 rows, 2253 columns, 390463 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 129483 rows, 2253 columns and 390463 nonzeros
Model fingerprint: 0x455e5ee5
Variable types: 47 continuous, 2206 integer (2206 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 4.0000000
Presolve removed 44444 rows and 10 columns
Presolve time: 0.80s
Presolved: 85039 rows, 2243 columns, 257533 nonzeros
Variable types: 0 continuous, 2243 integer (2196 binary)
Found heuristic solution: objective 11.0000000
Root relaxation presolved: 2231 rows, 87270 columns, 259776 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22868    4.9869141e+01   0.000000e+00   8.614444e+04      5s
   48192    4.9796129e+01   0.000000e+00   2.128672e+03     10s
   57660    5.0000000e+01   0.000000e+00   0.000000e+00     12s
   57660    5.0000000e+01   0.000000e+00   0.000000e+00     12s
   57660    5.0000000e+01   0.000000e+00   0.000000e+00     12s

Root relaxation: objective 5.000000e+01, 57660 iterations, 11.07 seconds (8.20 work units)
Total elapsed time = 22.31s (DegenMoves)
Total elapsed time = 26.37s (DegenMoves)

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

     0     0   50.00000    0  564   11.00000   50.00000   355%     -   26s
H    0     0                      13.0000000   50.00000   285%     -   27s
     0     0   50.00000    0  738   13.00000   50.00000   285%     -   37s
     0     0   50.00000    0  643   13.00000   50.00000   285%     -   40s
     0     0          -    0        13.00000   50.00000   285%     -   50s

Cutting planes:
  Gomory: 1
  Lift-and-project: 64
  Cover: 39
  Clique: 27
  MIR: 142
  StrongCG: 2
  GUB cover: 1
  Zero half: 35
  RLT: 73
  BQP: 8

Explored 1 nodes (83089 simplex iterations) in 50.11 seconds (51.18 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 13 11 4 

Time limit reached
Best objective 1.300000000000e+01, best bound 5.000000000000e+01, gap 284.6154%

Wrote result file './lp_solutions/grafo6231.39.sol'

