
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:04:08 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6936.43.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/grafo6936.43.lp
Reading time = 0.11 seconds
: 66439 rows, 2192 columns, 201019 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 66439 rows, 2192 columns and 201019 nonzeros
Model fingerprint: 0xe9a570d9
Variable types: 45 continuous, 2147 integer (2147 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 8068 rows and 28 columns
Presolve time: 0.43s
Presolved: 58371 rows, 2164 columns, 177163 nonzeros
Variable types: 0 continuous, 2164 integer (2119 binary)
Root relaxation presolved: 2164 rows, 60535 columns, 179327 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   26779    4.5947691e+01   0.000000e+00   2.243346e+03      5s
   30540    4.6000000e+01   0.000000e+00   0.000000e+00      6s
   30540    4.6000000e+01   0.000000e+00   0.000000e+00      6s

Root relaxation: objective 4.600000e+01, 30540 iterations, 5.16 seconds (4.25 work units)
Total elapsed time = 11.53s (DegenMoves)

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

     0     0   46.00000    0  505          -   46.00000      -     -   13s
H    0     0                       7.0000000   46.00000   557%     -   13s
H    0     0                       8.0000000   46.00000   475%     -   13s
H    0     0                      10.0000000   46.00000   360%     -   15s
H    0     0                      11.0000000   46.00000   318%     -   15s
     0     0   46.00000    0  758   11.00000   46.00000   318%     -   20s
H    0     0                      12.0000000   46.00000   283%     -   21s
     0     0   46.00000    0  741   12.00000   46.00000   283%     -   21s
     0     0   46.00000    0  488   12.00000   46.00000   283%     -   38s
     0     0   46.00000    0  485   12.00000   46.00000   283%     -   38s
     0     0   46.00000    0  556   12.00000   46.00000   283%     -   50s

Cutting planes:
  Cover: 28
  MIR: 196
  GUB cover: 2
  Zero half: 50
  RLT: 64

Explored 1 nodes (73159 simplex iterations) in 50.08 seconds (43.21 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 12 11 10 ... 7

Time limit reached
Best objective 1.200000000000e+01, best bound 4.600000000000e+01, gap 283.3333%

Wrote result file './lp_solutions/grafo6936.43.sol'

