
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Wed Nov 13 07:23:02 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6491.51.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/grafo6491.51.lp
Reading time = 0.17 seconds
: 76113 rows, 2547 columns, 230113 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 76113 rows, 2547 columns and 230113 nonzeros
Model fingerprint: 0x69e90c3c
Variable types: 47 continuous, 2500 integer (2500 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 1347 rows and 1 columns
Presolve time: 0.66s
Presolved: 74766 rows, 2546 columns, 226358 nonzeros
Variable types: 0 continuous, 2546 integer (2499 binary)
Root relaxation presolved: 2495 rows, 77261 columns, 228904 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17795    2.5964462e+01   0.000000e+00   7.336485e+03      5s
   28185    2.6000000e+01   0.000000e+00   0.000000e+00      8s
   28185    2.6000000e+01   0.000000e+00   0.000000e+00      8s
   28185    2.6000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 2.600000e+01, 28185 iterations, 7.09 seconds (4.32 work units)
Total elapsed time = 16.69s (DegenMoves)
Total elapsed time = 26.72s (DegenMoves)
Total elapsed time = 30.27s (DegenMoves)

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

     0     0   26.00000    0  304          -   26.00000      -     -   31s
H    0     0                       5.0000000   26.00000   420%     -   31s
H    0     0                      10.0000000   26.00000   160%     -   31s
     0     0   26.00000    0  511   10.00000   26.00000   160%     -   39s
     0     0   26.00000    0  507   10.00000   26.00000   160%     -   40s
     0     0   26.00000    0  593   10.00000   26.00000   160%     -   50s

Cutting planes:
  Gomory: 4
  Lift-and-project: 30
  Cover: 13
  Clique: 1
  MIR: 74
  Zero half: 27
  RLT: 39

Explored 1 nodes (58253 simplex iterations) in 50.13 seconds (34.77 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 10 5 

Time limit reached
Best objective 1.000000000000e+01, best bound 2.600000000000e+01, gap 160.0000%

Wrote result file './lp_solutions/grafo6491.51.sol'

