
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Thu Nov 21 08:57:02 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6959.37.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/grafo6959.37.lp
Reading time = 0.18 seconds
: 108496 rows, 2390 columns, 327756 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 108496 rows, 2390 columns and 327756 nonzeros
Model fingerprint: 0x77842fe0
Variable types: 52 continuous, 2338 integer (2338 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 2.0000000
Presolve removed 28485 rows and 48 columns
Presolve time: 0.79s
Presolved: 80011 rows, 2342 columns, 242854 nonzeros
Variable types: 0 continuous, 2342 integer (2290 binary)
Found heuristic solution: objective 13.0000000
Root relaxation presolved: 2342 rows, 82353 columns, 245196 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19995    5.5946877e+01   0.000000e+00   3.792037e+04      5s
   40486    5.5927811e+01   0.000000e+00   3.460062e+03     10s
   61172    5.5921912e+01   0.000000e+00   1.014065e+03     15s
   81058    5.6000000e+01   0.000000e+00   0.000000e+00     20s
   81058    5.6000000e+01   0.000000e+00   0.000000e+00     20s

Root relaxation: objective 5.600000e+01, 81058 iterations, 18.95 seconds (15.94 work units)
Total elapsed time = 20.11s (DegenMoves)
Total elapsed time = 36.27s (DegenMoves)

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

     0     0   56.00000    0  499   13.00000   56.00000   331%     -   37s
H    0     0                      16.0000000   56.00000   250%     -   38s
     0     0          -    0        16.00000   56.00000   250%     -   50s

Cutting planes:
  Gomory: 50
  Cover: 52
  Clique: 12
  MIR: 163
  GUB cover: 8
  Zero half: 78
  RLT: 54

Explored 1 nodes (102170 simplex iterations) in 50.02 seconds (46.66 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 16 13 2 

Time limit reached
Best objective 1.600000000000e+01, best bound 5.600000000000e+01, gap 250.0000%

Wrote result file './lp_solutions/grafo6959.37.sol'

