
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 07:11:42 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo5644.42.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/grafo5644.42.lp
Reading time = 0.09 seconds
: 52916 rows, 1769 columns, 159894 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 52916 rows, 1769 columns and 159894 nonzeros
Model fingerprint: 0xc894d700
Variable types: 37 continuous, 1732 integer (1732 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 8939 rows and 15 columns
Presolve time: 0.32s
Presolved: 43977 rows, 1754 columns, 133432 nonzeros
Variable types: 0 continuous, 1754 integer (1717 binary)
Root relaxation presolved: 24727 rows, 21004 columns, 94932 nonzeros


Root relaxation: objective 2.800000e+01, 3002 iterations, 1.30 seconds (1.24 work units)

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

     0     0   28.00000    0  413          -   28.00000      -     -    4s
H    0     0                       7.0000000   28.00000   300%     -    4s
     0     0   28.00000    0  640    7.00000   28.00000   300%     -    8s
     0     0   28.00000    0  555    7.00000   28.00000   300%     -    9s
H    0     0                       8.0000000   28.00000   250%     -   17s
     0     0   28.00000    0  386    8.00000   28.00000   250%     -   17s
     0     0   28.00000    0  384    8.00000   28.00000   250%     -   17s
H    0     0                      15.0000000   28.00000  86.7%     -   24s
     0     0   28.00000    0  505   15.00000   28.00000  86.7%     -   24s
     0     0   28.00000    0  486   15.00000   28.00000  86.7%     -   24s
H    0     0                      16.0000000   28.00000  75.0%     -   30s
     0     0   28.00000    0  479   16.00000   28.00000  75.0%     -   30s
     0     0   28.00000    0  467   16.00000   28.00000  75.0%     -   30s
     0     0   28.00000    0  435   16.00000   28.00000  75.0%     -   37s
     0     0   28.00000    0  392   16.00000   28.00000  75.0%     -   37s
     0     0   28.00000    0  386   16.00000   28.00000  75.0%     -   41s
     0     0   28.00000    0  386   16.00000   28.00000  75.0%     -   43s

Cutting planes:
  Cover: 2
  Clique: 9
  MIR: 30
  Zero half: 4
  RLT: 22
  BQP: 1

Explored 1 nodes (63797 simplex iterations) in 50.02 seconds (48.12 work units)
Thread count was 8 (of 8 available processors)

Solution count 4: 16 15 8 7 

Time limit reached
Best objective 1.600000000000e+01, best bound 2.800000000000e+01, gap 75.0000%

Wrote result file './lp_solutions/grafo5644.42.sol'

