
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 26 01:09:26 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3534.41.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/grafo3534.41.lp
Reading time = 0.18 seconds
: 90550 rows, 2024 columns, 273207 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 90550 rows, 2024 columns and 273207 nonzeros
Model fingerprint: 0x6bfe14e3
Variable types: 41 continuous, 1983 integer (1983 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 5.0000000
Presolve removed 26290 rows and 7 columns
Presolve time: 0.83s
Presolved: 64260 rows, 2017 columns, 194770 nonzeros
Variable types: 0 continuous, 2017 integer (1976 binary)
Found heuristic solution: objective 10.0000000
Root relaxation presolved: 2014 rows, 66274 columns, 196787 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22545    3.7962259e+01   0.000000e+00   6.545421e+03      5s
   33973    3.8000000e+01   0.000000e+00   0.000000e+00      8s
   33973    3.8000000e+01   0.000000e+00   0.000000e+00      8s
   33973    3.8000000e+01   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 3.800000e+01, 33973 iterations, 6.69 seconds (4.54 work units)
Total elapsed time = 14.36s (DegenMoves)
Total elapsed time = 15.53s (DegenMoves)

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

     0     0   38.00000    0  281   10.00000   38.00000   280%     -   16s
H    0     0                      11.0000000   38.00000   245%     -   16s
     0     0   38.00000    0  561   11.00000   38.00000   245%     -   23s
     0     0   38.00000    0  519   11.00000   38.00000   245%     -   24s
H    0     0                      12.0000000   38.00000   217%     -   36s
     0     0   38.00000    0  427   12.00000   38.00000   217%     -   36s
     0     0   38.00000    0  469   12.00000   38.00000   217%     -   38s
     0     0   38.00000    0  522   12.00000   38.00000   217%     -   50s

Cutting planes:
  Lift-and-project: 1
  Cover: 35
  Clique: 11
  MIR: 105
  StrongCG: 1
  GUB cover: 2
  Zero half: 69
  RLT: 58

Explored 1 nodes (66895 simplex iterations) in 50.09 seconds (34.63 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 12 11 10 5 

Time limit reached
Best objective 1.200000000000e+01, best bound 3.800000000000e+01, gap 216.6667%

Wrote result file './lp_solutions/grafo3534.41.sol'

