
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 07:38:03 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6755.48.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/grafo6755.48.lp
Reading time = 0.15 seconds
: 94954 rows, 2625 columns, 286850 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 94954 rows, 2625 columns and 286850 nonzeros
Model fingerprint: 0xad2d35ca
Variable types: 49 continuous, 2576 integer (2576 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 1.0000000
Presolve removed 14092 rows and 0 columns
Presolve time: 0.52s
Presolved: 80862 rows, 2625 columns, 244996 nonzeros
Variable types: 0 continuous, 2625 integer (2576 binary)
Found heuristic solution: objective 8.0000000
Root relaxation presolved: 2583 rows, 83445 columns, 247621 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   23144    4.7720186e+01   0.000000e+00   6.447854e+03      5s
   42276    4.8000000e+01   0.000000e+00   0.000000e+00      9s
   42276    4.8000000e+01   0.000000e+00   0.000000e+00      9s
   42276    4.8000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.800000e+01, 42276 iterations, 8.73 seconds (7.27 work units)
Total elapsed time = 21.52s (DegenMoves)
Total elapsed time = 33.34s (DegenMoves)
Total elapsed time = 35.30s (DegenMoves)

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

     0     0   48.00000    0  508    8.00000   48.00000   500%     -   39s
H    0     0                      11.0000000   48.00000   336%     -   39s
H    0     0                      12.0000000   48.00000   300%     -   39s
     0     0   48.00000    0  728   12.00000   48.00000   300%     -   47s
     0     0   48.00000    0  715   12.00000   48.00000   300%     -   48s

Cutting planes:
  Gomory: 4
  Cover: 19
  MIR: 120
  Zero half: 92
  RLT: 25

Explored 1 nodes (78635 simplex iterations) in 50.16 seconds (55.00 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 12 11 8 1 

Time limit reached
Best objective 1.200000000000e+01, best bound 4.800000000000e+01, gap 300.0000%

Wrote result file './lp_solutions/grafo6755.48.sol'

