
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 07:00:17 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6509.38.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/grafo6509.38.lp
Reading time = 0.23 seconds
: 141012 rows, 2432 columns, 425376 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 141012 rows, 2432 columns and 425376 nonzeros
Model fingerprint: 0x872749f0
Variable types: 50 continuous, 2382 integer (2382 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 46658 rows and 3 columns
Presolve time: 0.91s
Presolved: 94354 rows, 2429 columns, 285929 nonzeros
Variable types: 0 continuous, 2429 integer (2379 binary)
Root relaxation presolved: 2410 rows, 96764 columns, 288358 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   19480    5.0753276e+01   0.000000e+00   1.237799e+05      5s
   42516    5.0678198e+01   0.000000e+00   7.208525e+03     10s
   63414    5.1000000e+01   0.000000e+00   0.000000e+00     15s
   63414    5.1000000e+01   0.000000e+00   0.000000e+00     15s
   63414    5.1000000e+01   0.000000e+00   0.000000e+00     15s

Root relaxation: objective 5.100000e+01, 63414 iterations, 13.60 seconds (10.29 work units)
Total elapsed time = 34.62s (DegenMoves)
Total elapsed time = 39.50s (DegenMoves)
Total elapsed time = 42.32s (DegenMoves)
Total elapsed time = 46.26s (DegenMoves)

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

     0     0   51.00000    0  752          -   51.00000      -     -   48s
H    0     0                       4.0000000   51.00000  1175%     -   48s
H    0     0                       6.0000000   51.00000   750%     -   48s

Cutting planes:
  Cover: 42
  Clique: 31
  MIR: 136
  StrongCG: 1
  GUB cover: 1

Explored 1 nodes (88683 simplex iterations) in 50.04 seconds (56.00 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 5.100000000000e+01, gap 750.0000%

Wrote result file './lp_solutions/grafo6509.38.sol'

