
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 03:12:28 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6644.38.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/grafo6644.38.lp
Reading time = 0.12 seconds
: 73939 rows, 2162 columns, 223769 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 73939 rows, 2162 columns and 223769 nonzeros
Model fingerprint: 0xcdb6242f
Variable types: 48 continuous, 2114 integer (2114 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 3.0000000
Presolve removed 13109 rows and 31 columns
Presolve time: 0.50s
Presolved: 60830 rows, 2131 columns, 184902 nonzeros
Variable types: 0 continuous, 2131 integer (2083 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 2131 rows, 62961 columns, 187033 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   27470    4.3950163e+01   0.000000e+00   3.428482e+03      5s
   47044    4.4000000e+01   0.000000e+00   0.000000e+00      9s
   47044    4.4000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.400000e+01, 47044 iterations, 8.38 seconds (6.92 work units)
Total elapsed time = 17.92s (DegenMoves)

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

     0     0   44.00000    0  459    6.00000   44.00000   633%     -   18s
H    0     0                       7.0000000   44.00000   529%     -   18s
H    0     0                       9.0000000   44.00000   389%     -   20s
H    0     0                      13.0000000   44.00000   238%     -   20s
     0     0   44.00000    0  699   13.00000   44.00000   238%     -   28s
     0     0   44.00000    0  680   13.00000   44.00000   238%     -   31s
     0     0   44.00000    0  555   13.00000   44.00000   238%     -   48s
     0     0   44.00000    0  528   13.00000   44.00000   238%     -   49s

Cutting planes:
  Gomory: 1
  Cover: 32
  Clique: 7
  MIR: 162
  StrongCG: 1
  GUB cover: 7
  Zero half: 1
  RLT: 13
  BQP: 1

Explored 1 nodes (81829 simplex iterations) in 50.08 seconds (42.64 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 13 9 7 ... 3

Time limit reached
Best objective 1.300000000000e+01, best bound 4.400000000000e+01, gap 238.4615%

Wrote result file './lp_solutions/grafo6644.38.sol'

