
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:49:48 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6453.49.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/grafo6453.49.lp
Reading time = 0.12 seconds
: 77928 rows, 2380 columns, 235395 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 77928 rows, 2380 columns and 235395 nonzeros
Model fingerprint: 0xf133b9c7
Variable types: 44 continuous, 2336 integer (2336 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 8680 rows and 23 columns
Presolve time: 0.50s
Presolved: 69248 rows, 2357 columns, 209652 nonzeros
Variable types: 0 continuous, 2357 integer (2313 binary)
Root relaxation presolved: 2357 rows, 71605 columns, 212009 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   25653    4.0970458e+01   0.000000e+00   4.719523e+03      5s
   38891    4.1000000e+01   0.000000e+00   0.000000e+00      8s
   38891    4.1000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 4.100000e+01, 38891 iterations, 7.18 seconds (6.62 work units)
Total elapsed time = 14.04s (DegenMoves)

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

     0     0   41.00000    0  541          -   41.00000      -     -   14s
H    0     0                       8.0000000   41.00000   412%     -   15s
H    0     0                       9.0000000   41.00000   356%     -   15s
H    0     0                      10.0000000   41.00000   310%     -   15s
H    0     0                      11.0000000   41.00000   273%     -   25s
     0     0   41.00000    0  798   11.00000   41.00000   273%     -   25s
H    0     0                      12.0000000   41.00000   242%     -   26s
     0     0   41.00000    0  785   12.00000   41.00000   242%     -   27s
     0     0   41.00000    0  806   12.00000   41.00000   242%     -   50s

Cutting planes:
  Gomory: 5
  Lift-and-project: 23
  Cover: 8
  Clique: 1
  MIR: 112
  StrongCG: 1
  Zero half: 86
  RLT: 42

Explored 1 nodes (72424 simplex iterations) in 50.09 seconds (42.28 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 12 11 10 ... 8

Time limit reached
Best objective 1.200000000000e+01, best bound 4.100000000000e+01, gap 241.6667%

Wrote result file './lp_solutions/grafo6453.49.sol'

