
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:02:48 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3793.39.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/grafo3793.39.lp
Reading time = 0.22 seconds
: 135597 rows, 2242 columns, 408741 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 135597 rows, 2242 columns and 408741 nonzeros
Model fingerprint: 0xe67596d7
Variable types: 47 continuous, 2195 integer (2195 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 47568 rows and 9 columns
Presolve time: 0.87s
Presolved: 88029 rows, 2233 columns, 266396 nonzeros
Variable types: 0 continuous, 2233 integer (2186 binary)
Found heuristic solution: objective 4.0000000
Root relaxation presolved: 2223 rows, 90252 columns, 268629 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   22541    5.3813505e+01   0.000000e+00   2.473528e+04      5s
   49140    5.3757481e+01   0.000000e+00   7.301040e+02     10s
   55417    5.4000000e+01   0.000000e+00   0.000000e+00     11s
   55417    5.4000000e+01   0.000000e+00   0.000000e+00     11s
   55417    5.4000000e+01   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 5.400000e+01, 55417 iterations, 10.29 seconds (7.65 work units)
Total elapsed time = 21.97s (DegenMoves)
Total elapsed time = 25.27s (DegenMoves)

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

     0     0   54.00000    0  500    4.00000   54.00000  1250%     -   27s
H    0     0                       6.0000000   54.00000   800%     -   27s
     0     0   54.00000    0  796    6.00000   54.00000   800%     -   42s
     0     0   54.00000    0  714    6.00000   54.00000   800%     -   44s
     0     0          -    0         6.00000   54.00000   800%     -   50s

Cutting planes:
  Gomory: 6
  Lift-and-project: 31
  Cover: 2
  Clique: 16
  MIR: 102
  StrongCG: 1
  Zero half: 17
  RLT: 45
  BQP: 2

Explored 1 nodes (80822 simplex iterations) in 50.02 seconds (51.43 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 6 4 

Time limit reached
Best objective 6.000000000000e+00, best bound 5.400000000000e+01, gap 800.0000%

Wrote result file './lp_solutions/grafo3793.39.sol'

