
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 06:16:02 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo4146.50.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/grafo4146.50.lp
Reading time = 0.33 seconds
: 174623 rows, 2994 columns, 526326 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 174623 rows, 2994 columns and 526326 nonzeros
Model fingerprint: 0x0f0ee485
Variable types: 52 continuous, 2942 integer (2942 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 54086 rows and 29 columns
Presolve time: 1.62s
Presolved: 120537 rows, 2965 columns, 364672 nonzeros
Variable types: 0 continuous, 2965 integer (2913 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2959 rows, 123496 columns, 367637 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   13169    5.3072042e+01   0.000000e+00   1.734237e+06      5s
   28618    4.6673334e+01   0.000000e+00   6.617891e+04     10s
   43643    4.6636543e+01   0.000000e+00   2.973944e+04     15s
   58184    4.6628864e+01   0.000000e+00   6.061700e+02     20s
   64317    4.7000000e+01   0.000000e+00   0.000000e+00     23s
   64317    4.7000000e+01   0.000000e+00   0.000000e+00     23s
   64317    4.7000000e+01   0.000000e+00   0.000000e+00     23s

Root relaxation: objective 4.700000e+01, 64317 iterations, 20.89 seconds (14.35 work units)
Total elapsed time = 43.32s (DegenMoves)
Total elapsed time = 45.52s (DegenMoves)

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

     0     0   47.00000    0  560   10.00000   47.00000   370%     -   47s
H    0     0                      13.0000000   47.00000   262%     -   47s

Cutting planes:
  Cover: 49
  Clique: 10
  MIR: 135
  StrongCG: 2
  GUB cover: 7

Explored 1 nodes (78757 simplex iterations) in 50.08 seconds (39.36 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 13 10 4 

Time limit reached
Best objective 1.300000000000e+01, best bound 4.700000000000e+01, gap 261.5385%

Wrote result file './lp_solutions/grafo4146.50.sol'

