
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 07:21:16 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo10186.39.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/grafo10186.39.lp
Reading time = 0.10 seconds
: 62866 rows, 1863 columns, 190026 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 62866 rows, 1863 columns and 190026 nonzeros
Model fingerprint: 0x353bd163
Variable types: 39 continuous, 1824 integer (1824 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 18123 rows and 77 columns
Presolve time: 0.42s
Presolved: 44743 rows, 1786 columns, 136170 nonzeros
Variable types: 0 continuous, 1786 integer (1747 binary)
Root relaxation presolved: 26465 rows, 20064 columns, 99614 nonzeros


Root relaxation: objective 3.000000e+01, 1071 iterations, 0.33 seconds (0.29 work units)

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

     0     0   30.00000    0  298          -   30.00000      -     -    1s
H    0     0                      13.0000000   30.00000   131%     -    2s
H    0     0                      15.0000000   30.00000   100%     -    2s
H    0     0                      16.0000000   30.00000  87.5%     -    4s
     0     0   30.00000    0  478   16.00000   30.00000  87.5%     -    4s
H    0     0                      17.0000000   30.00000  76.5%     -    4s
     0     0   30.00000    0  473   17.00000   30.00000  76.5%     -    4s
     0     0   30.00000    0  286   17.00000   30.00000  76.5%     -   11s
     0     0   30.00000    0  284   17.00000   30.00000  76.5%     -   11s
H    0     0                      18.0000000   30.00000  66.7%     -   17s
     0     0   30.00000    0  306   18.00000   30.00000  66.7%     -   17s
     0     0   30.00000    0  279   18.00000   30.00000  66.7%     -   17s
H    0     0                      19.0000000   30.00000  57.9%     -   18s
     0     0   30.00000    0  398   19.00000   30.00000  57.9%     -   31s
     0     0   30.00000    0  426   19.00000   30.00000  57.9%     -   32s
     0     0   30.00000    0  275   19.00000   30.00000  57.9%     -   48s
     0     0   30.00000    0  332   19.00000   30.00000  57.9%     -   49s
     0     0          -    0        19.00000   30.00000  57.9%     -   50s

Cutting planes:
  Lift-and-project: 1
  Cover: 18
  Clique: 7
  MIR: 88
  StrongCG: 1
  GUB cover: 1
  Zero half: 36
  RLT: 37

Explored 1 nodes (53821 simplex iterations) in 50.06 seconds (38.55 work units)
Thread count was 8 (of 8 available processors)

Solution count 6: 19 18 17 ... 13

Time limit reached
Best objective 1.900000000000e+01, best bound 3.000000000000e+01, gap 57.8947%

Wrote result file './lp_solutions/grafo10186.39.sol'

