
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 06:00:21 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo3179.41.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/grafo3179.41.lp
Reading time = 0.25 seconds
: 158244 rows, 2599 columns, 477131 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 158244 rows, 2599 columns and 477131 nonzeros
Model fingerprint: 0x949307f9
Variable types: 52 continuous, 2547 integer (2547 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 51863 rows and 30 columns
Presolve time: 1.20s
Presolved: 106381 rows, 2569 columns, 322075 nonzeros
Variable types: 0 continuous, 2569 integer (2517 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2566 rows, 108947 columns, 324644 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   17323    5.9769069e+01   0.000000e+00   7.021081e+05      5s
   38931    5.4680377e+01   0.000000e+00   1.282743e+04     10s
   60491    5.4661508e+01   0.000000e+00   6.142063e+03     15s
   76251    5.5000000e+01   0.000000e+00   0.000000e+00     19s
   76251    5.5000000e+01   0.000000e+00   0.000000e+00     19s
   76251    5.5000000e+01   0.000000e+00   0.000000e+00     19s

Root relaxation: objective 5.500000e+01, 76251 iterations, 17.57 seconds (13.10 work units)
Total elapsed time = 38.63s (DegenMoves)
Total elapsed time = 42.39s (DegenMoves)

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

     0     0   55.00000    0  547    5.00000   55.00000  1000%     -   44s
H    0     0                       6.0000000   55.00000   817%     -   44s
     0     0          -    0         6.00000   55.00000   817%     -   50s

Cutting planes:
  Gomory: 30
  Cover: 42
  Clique: 14
  MIR: 93
  GUB cover: 4
  Zero half: 100
  RLT: 55
  BQP: 3

Explored 1 nodes (96272 simplex iterations) in 50.02 seconds (48.39 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 6 5 

Time limit reached
Best objective 6.000000000000e+00, best bound 5.500000000000e+01, gap 816.6667%

Wrote result file './lp_solutions/grafo3179.41.sol'

