
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 03:50:03 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7551.39.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/grafo7551.39.lp
Reading time = 0.10 seconds
: 62753 rows, 2006 columns, 189916 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 62753 rows, 2006 columns and 189916 nonzeros
Model fingerprint: 0xd51462e2
Variable types: 45 continuous, 1961 integer (1961 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]
Found heuristic solution: objective 1.0000000
Presolve removed 9588 rows and 39 columns
Presolve time: 0.41s
Presolved: 53165 rows, 1967 columns, 161607 nonzeros
Variable types: 0 continuous, 1967 integer (1922 binary)
Found heuristic solution: objective 7.0000000
Root relaxation presolved: 29836 rows, 25296 columns, 114949 nonzeros


Root relaxation: objective 3.900000e+01, 4985 iterations, 2.71 seconds (2.55 work units)
Total elapsed time = 7.03s (DegenMoves)

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

     0     0   39.00000    0  448    7.00000   39.00000   457%     -    7s
H    0     0                       9.0000000   39.00000   333%     -    7s
     0     0   39.00000    0  814    9.00000   39.00000   333%     -   16s
     0     0   39.00000    0  810    9.00000   39.00000   333%     -   16s
     0     0   39.00000    0  733    9.00000   39.00000   333%     -   36s
     0     0   39.00000    0  706    9.00000   39.00000   333%     -   39s
     0     0   39.00000    0  779    9.00000   39.00000   333%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 16
  Clique: 1
  MIR: 133
  StrongCG: 1
  GUB cover: 5
  Zero half: 51
  RLT: 47

Explored 1 nodes (47389 simplex iterations) in 50.05 seconds (43.35 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 9 7 1 

Time limit reached
Best objective 9.000000000000e+00, best bound 3.900000000000e+01, gap 333.3333%

Wrote result file './lp_solutions/grafo7551.39.sol'

