
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 03:46:42 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6984.39.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/grafo6984.39.lp
Reading time = 0.11 seconds
: 66447 rows, 2025 columns, 201001 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 66447 rows, 2025 columns and 201001 nonzeros
Model fingerprint: 0xeefaa354
Variable types: 44 continuous, 1981 integer (1981 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 13535 rows and 29 columns
Presolve time: 0.41s
Presolved: 52912 rows, 1996 columns, 160703 nonzeros
Variable types: 0 continuous, 1996 integer (1952 binary)
Root relaxation presolved: 1996 rows, 54908 columns, 162699 nonzeros


Root relaxation: objective 5.200000e+01, 2703 iterations, 0.72 seconds (0.80 work units)
Total elapsed time = 6.97s (DegenMoves)

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

     0     0   52.00000    0  508          -   52.00000      -     -    9s
H    0     0                       8.0000000   52.00000   550%     -   11s
H    0     0                      13.0000000   52.00000   300%     -   11s
     0     0   52.00000    0  710   13.00000   52.00000   300%     -   17s
H    0     0                      16.0000000   52.00000   225%     -   17s
     0     0   52.00000    0  709   16.00000   52.00000   225%     -   18s
     0     0   52.00000    0  613   16.00000   52.00000   225%     -   50s

Cutting planes:
  Gomory: 2
  Lift-and-project: 35
  Cover: 26
  Clique: 4
  MIR: 145
  GUB cover: 1
  Zero half: 47
  RLT: 63

Explored 1 nodes (49416 simplex iterations) in 50.06 seconds (50.41 work units)
Thread count was 8 (of 8 available processors)

Solution count 3: 16 13 8 

Time limit reached
Best objective 1.600000000000e+01, best bound 5.200000000000e+01, gap 225.0000%

Wrote result file './lp_solutions/grafo6984.39.sol'

