
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Mon Nov 25 04:22:06 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo6222.39.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/grafo6222.39.lp
Reading time = 0.12 seconds
: 74800 rows, 1996 columns, 226024 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 74800 rows, 1996 columns and 226024 nonzeros
Model fingerprint: 0x870a66de
Variable types: 43 continuous, 1953 integer (1953 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 19032 rows and 17 columns
Presolve time: 0.48s
Presolved: 55768 rows, 1979 columns, 169275 nonzeros
Variable types: 0 continuous, 1979 integer (1936 binary)
Root relaxation presolved: 1979 rows, 57747 columns, 171254 nonzeros


Root relaxation: objective 4.400000e+01, 1676 iterations, 0.31 seconds (0.27 work units)

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

     0     0   44.00000    0  351          -   44.00000      -     -    3s
H    0     0                       7.0000000   44.00000   529%     -    4s
H    0     0                      11.0000000   44.00000   300%     -   11s
     0     0   44.00000    0  707   11.00000   44.00000   300%     -   11s
H    0     0                      12.0000000   44.00000   267%     -   11s
     0     0   44.00000    0  711   12.00000   44.00000   267%     -   11s
H    0     0                      13.0000000   44.00000   238%     -   27s
     0     0   44.00000    0  552   13.00000   44.00000   238%     -   27s
     0     0   44.00000    0  521   13.00000   44.00000   238%     -   28s
H    0     0                      15.0000000   44.00000   193%     -   47s
H    0     0                      16.0000000   44.00000   175%     -   47s
H    0     0                      17.0000000   44.00000   159%     -   47s
H    0     0                      18.0000000   44.00000   144%     -   47s
H    0     0                      20.0000000   44.00000   120%     -   47s
     0     0   44.00000    0  543   20.00000   44.00000   120%     -   47s
     0     0   44.00000    0  524   20.00000   44.00000   120%     -   48s
     0     0          -    0        20.00000   44.00000   120%     -   50s

Cutting planes:
  Gomory: 1
  Cover: 25
  Clique: 21
  MIR: 100
  StrongCG: 1
  GUB cover: 2
  Zero half: 42
  RLT: 86
  BQP: 2

Explored 1 nodes (46324 simplex iterations) in 50.08 seconds (43.98 work units)
Thread count was 8 (of 8 available processors)

Solution count 9: 20 18 17 ... 7

Time limit reached
Best objective 2.000000000000e+01, best bound 4.400000000000e+01, gap 120.0000%

Wrote result file './lp_solutions/grafo6222.39.sol'

