
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:24:37 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6335.39.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/grafo6335.39.lp
Reading time = 0.25 seconds
: 154944 rows, 2419 columns, 467025 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 154944 rows, 2419 columns and 467025 nonzeros
Model fingerprint: 0x05398908
Variable types: 50 continuous, 2369 integer (2369 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 54583 rows and 22 columns
Presolve time: 1.09s
Presolved: 100361 rows, 2397 columns, 303745 nonzeros
Variable types: 0 continuous, 2397 integer (2347 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2388 rows, 102749 columns, 306142 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   18906    5.9909698e+01   0.000000e+00   1.947695e+05      5s
   42830    5.9804953e+01   0.000000e+00   7.902747e+03     10s
   65678    5.9791605e+01   0.000000e+00   2.378124e+03     15s
   75322    6.0000000e+01   0.000000e+00   0.000000e+00     17s
   75322    6.0000000e+01   0.000000e+00   0.000000e+00     17s
   75322    6.0000000e+01   0.000000e+00   0.000000e+00     17s

Root relaxation: objective 6.000000e+01, 75322 iterations, 15.95 seconds (11.75 work units)
Total elapsed time = 33.99s (DegenMoves)
Total elapsed time = 41.81s (DegenMoves)
Total elapsed time = 45.99s (DegenMoves)

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

     0     0   60.00000    0  509    5.00000   60.00000  1100%     -   47s
H    0     0                       6.0000000   60.00000   900%     -   48s
H    0     0                       8.0000000   60.00000   650%     -   48s

Cutting planes:
  Gomory: 42
  Cover: 69
  Clique: 21
  MIR: 170
  GUB cover: 2
  Zero half: 60

Explored 1 nodes (98357 simplex iterations) in 50.09 seconds (57.00 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 8 6 5 

Time limit reached
Best objective 8.000000000000e+00, best bound 6.000000000000e+01, gap 650.0000%

Wrote result file './lp_solutions/grafo6335.39.sol'

