
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 03:41:49 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo10657.39.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/grafo10657.39.lp
Reading time = 0.14 seconds
: 86555 rows, 2162 columns, 261581 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 86555 rows, 2162 columns and 261581 nonzeros
Model fingerprint: 0xf21bb3f7
Variable types: 47 continuous, 2115 integer (2115 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 20263 rows and 32 columns
Presolve time: 0.68s
Presolved: 66292 rows, 2130 columns, 201235 nonzeros
Variable types: 0 continuous, 2130 integer (2083 binary)
Found heuristic solution: objective 9.0000000
Root relaxation presolved: 2130 rows, 68422 columns, 203365 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26571    4.2753480e+01   0.000000e+00   5.336511e+02      5s
   29527    4.3000000e+01   0.000000e+00   0.000000e+00      6s
   29527    4.3000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 4.300000e+01, 29527 iterations, 4.75 seconds (3.93 work units)
Total elapsed time = 11.90s (DegenMoves)

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

     0     0   43.00000    0  463    9.00000   43.00000   378%     -   13s
H    0     0                      11.0000000   43.00000   291%     -   13s
     0     0   43.00000    0  732   11.00000   43.00000   291%     -   21s
     0     0   43.00000    0  709   11.00000   43.00000   291%     -   23s
H    0     0                      12.0000000   43.00000   258%     -   48s
H    0     0                      13.0000000   43.00000   231%     -   48s
     0     0   43.00000    0  494   13.00000   43.00000   231%     -   48s
     0     0   43.00000    0  515   13.00000   43.00000   231%     -   49s

Cutting planes:
  Cover: 35
  Clique: 7
  MIR: 123
  StrongCG: 1
  GUB cover: 7
  Zero half: 5
  RLT: 27

Explored 1 nodes (65054 simplex iterations) in 50.08 seconds (46.84 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 13 12 11 9 

Time limit reached
Best objective 1.300000000000e+01, best bound 4.300000000000e+01, gap 230.7692%

Wrote result file './lp_solutions/grafo10657.39.sol'

