
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Fri Nov 22 06:07:30 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo7208.43.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/grafo7208.43.lp
Reading time = 0.08 seconds
: 47318 rows, 1798 columns, 143070 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 47318 rows, 1798 columns and 143070 nonzeros
Model fingerprint: 0xb61a70af
Variable types: 38 continuous, 1760 integer (1760 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 2.0000000
Presolve removed 3548 rows and 41 columns
Presolve time: 0.31s
Presolved: 43770 rows, 1757 columns, 132793 nonzeros
Variable types: 0 continuous, 1757 integer (1719 binary)
Found heuristic solution: objective 6.0000000
Root relaxation presolved: 22993 rows, 22534 columns, 91239 nonzeros


Root relaxation: objective 2.600000e+01, 2568 iterations, 0.83 seconds (0.76 work units)

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

     0     0   26.00000    0  378    6.00000   26.00000   333%     -    3s
H    0     0                       9.0000000   26.00000   189%     -    3s
     0     0   26.00000    0  493    9.00000   26.00000   189%     -    6s
     0     0   26.00000    0  507    9.00000   26.00000   189%     -    7s
H    0     0                      10.0000000   26.00000   160%     -    8s
H    0     0                      11.0000000   26.00000   136%     -   15s
H    0     0                      12.0000000   26.00000   117%     -   15s
     0     0   26.00000    0  293   12.00000   26.00000   117%     -   15s
     0     0   26.00000    0  291   12.00000   26.00000   117%     -   15s
H    0     0                      13.0000000   26.00000   100%     -   22s
H    0     0                      14.0000000   26.00000  85.7%     -   22s
     0     0   26.00000    0  288   14.00000   26.00000  85.7%     -   22s
     0     0   26.00000    0  251   14.00000   26.00000  85.7%     -   22s
     0     0   26.00000    0  338   14.00000   26.00000  85.7%     -   35s
     0     0   26.00000    0  378   14.00000   26.00000  85.7%     -   36s
H    0     0                      15.0000000   25.83333  72.2%     -   39s
     0     0   25.83333    0  183   15.00000   25.83333  72.2%     -   39s
     0     0   25.83333    0  164   15.00000   25.83333  72.2%     -   39s
     0     0   25.66667    0  389   15.00000   25.66667  71.1%     -   45s
     0     0   25.66667    0  352   15.00000   25.66667  71.1%     -   45s
     0     0   25.66667    0  445   15.00000   25.66667  71.1%     -   50s

Cutting planes:
  Cover: 14
  MIR: 64
  GUB cover: 4
  Zero half: 67
  RLT: 28

Explored 1 nodes (75435 simplex iterations) in 50.05 seconds (43.81 work units)
Thread count was 8 (of 8 available processors)

Solution count 9: 15 14 13 ... 2

Time limit reached
Best objective 1.500000000000e+01, best bound 2.500000000000e+01, gap 66.6667%

Wrote result file './lp_solutions/grafo7208.43.sol'

