
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 03:10:47 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6579.38.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/grafo6579.38.lp
Reading time = 0.11 seconds
: 71965 rows, 2027 columns, 217595 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 71965 rows, 2027 columns and 217595 nonzeros
Model fingerprint: 0xe021bfb0
Variable types: 45 continuous, 1982 integer (1982 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 15517 rows and 27 columns
Presolve time: 0.49s
Presolved: 56448 rows, 2000 columns, 171423 nonzeros
Variable types: 0 continuous, 2000 integer (1955 binary)
Found heuristic solution: objective 5.0000000
Root relaxation presolved: 2000 rows, 58448 columns, 173423 nonzeros


Root relaxation: objective 4.600000e+01, 2959 iterations, 0.93 seconds (1.08 work units)
Total elapsed time = 7.27s (DegenMoves)

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

     0     0   46.00000    0  516    5.00000   46.00000   820%     -    8s
H    0     0                       7.0000000   46.00000   557%     -    8s
     0     0   46.00000    0  962    7.00000   46.00000   557%     -   20s
     0     0   46.00000    0  927    7.00000   46.00000   557%     -   22s
H    0     0                       8.0000000   46.00000   475%     -   42s
     0     0   46.00000    0  694    8.00000   46.00000   475%     -   42s
     0     0   46.00000    0  671    8.00000   46.00000   475%     -   42s
     0     0          -    0         8.00000   46.00000   475%     -   50s

Cutting planes:
  Cover: 27
  Clique: 11
  MIR: 241
  StrongCG: 1
  GUB cover: 4
  Zero half: 73
  RLT: 71

Explored 1 nodes (43781 simplex iterations) in 50.06 seconds (44.89 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 8 7 5 

Time limit reached
Best objective 8.000000000000e+00, best bound 4.600000000000e+01, gap 475.0000%

Wrote result file './lp_solutions/grafo6579.38.sol'

