
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 04:23:34 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6208.40.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/grafo6208.40.lp
Reading time = 0.12 seconds
: 74490 rows, 2277 columns, 225488 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 74490 rows, 2277 columns and 225488 nonzeros
Model fingerprint: 0x02f59602
Variable types: 49 continuous, 2228 integer (2228 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 10831 rows and 35 columns
Presolve time: 0.51s
Presolved: 63659 rows, 2242 columns, 193422 nonzeros
Variable types: 0 continuous, 2242 integer (2193 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2242 rows, 65901 columns, 195664 nonzeros


Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   24419    4.8679709e+01   0.000000e+00   8.944557e+03      5s
   43262    4.9000000e+01   0.000000e+00   0.000000e+00      9s
   43262    4.9000000e+01   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 4.900000e+01, 43262 iterations, 8.21 seconds (6.43 work units)
Total elapsed time = 19.97s (DegenMoves)
Total elapsed time = 22.41s (DegenMoves)

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

     0     0   49.00000    0  600    5.00000   49.00000   880%     -   23s
H    0     0                       7.0000000   49.00000   600%     -   23s
     0     0   49.00000    0  842    7.00000   49.00000   600%     -   38s
     0     0   49.00000    0  825    7.00000   49.00000   600%     -   44s

Cutting planes:
  Gomory: 4
  Lift-and-project: 29
  Cover: 12
  Clique: 1
  MIR: 135
  StrongCG: 2
  GUB cover: 1
  Zero half: 36
  RLT: 40

Explored 1 nodes (70243 simplex iterations) in 50.22 seconds (41.07 work units)
Thread count was 8 (of 8 available processors)

Solution count 2: 7 5 

Time limit reached
Best objective 7.000000000000e+00, best bound 4.900000000000e+01, gap 600.0000%

Wrote result file './lp_solutions/grafo6208.40.sol'

