
Gurobi 11.0.1 (mac64[x86], gurobi_cl) logging started Tue Nov 19 06:29:12 2024

Set parameter Username
Set parameter TimeLimit to value 50
Set parameter LogFile to value "./lp_solutions/grafo11425.38.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/grafo11425.38.lp
Reading time = 0.10 seconds
: 64516 rows, 1904 columns, 195074 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 64516 rows, 1904 columns and 195074 nonzeros
Model fingerprint: 0xe64a4cbf
Variable types: 39 continuous, 1865 integer (1865 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 11.0000000
Presolve removed 20525 rows and 132 columns
Presolve time: 0.43s
Presolved: 43991 rows, 1772 columns, 133885 nonzeros
Variable types: 0 continuous, 1772 integer (1733 binary)
Found heuristic solution: objective 19.0000000
Root relaxation presolved: 26416 rows, 19347 columns, 98735 nonzeros


Root relaxation: objective 3.400000e+01, 1604 iterations, 0.44 seconds (0.42 work units)

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

     0     0   34.00000    0  168   19.00000   34.00000  78.9%     -    2s
H    0     0                      20.0000000   34.00000  70.0%     -    2s
     0     0   34.00000    0  390   20.00000   34.00000  70.0%     -    3s
     0     0   34.00000    0  374   20.00000   34.00000  70.0%     -    3s
H    0     0                      21.0000000   34.00000  61.9%     -   12s
     0     0   33.93333    0  362   21.00000   33.93333  61.6%     -   12s
     0     0   33.93333    0  399   21.00000   33.93333  61.6%     -   13s
     0     0   33.93333    0  475   21.00000   33.93333  61.6%     -   22s
     0     0   33.93333    0  499   21.00000   33.93333  61.6%     -   23s
     0     0   33.93333    0  231   21.00000   33.93333  61.6%     -   27s
     0     0   33.93333    0  287   21.00000   33.93333  61.6%     -   28s
     0     0   33.93333    0  285   21.00000   33.93333  61.6%     -   32s
     0     0   33.93333    0  339   21.00000   33.93333  61.6%     -   33s
     0     0   33.93333    0  280   21.00000   33.93333  61.6%     -   39s
     0     0   33.93333    0  280   21.00000   33.93333  61.6%     -   39s
H    0     0                      22.0000000   33.93333  54.2%     -   43s
     0     2   33.93333    0  264   22.00000   33.93333  54.2%     -   44s
     3     8   33.93333    2  281   22.00000   33.93333  54.2%  1076   45s
   199   228   33.30000   39  307   22.00000   33.93333  54.2%   125   50s

Cutting planes:
  Lift-and-project: 2
  Cover: 1
  Clique: 20
  MIR: 49
  StrongCG: 1
  GUB cover: 1
  Zero half: 3
  RLT: 52
  Relax-and-lift: 2
  BQP: 1

Explored 227 nodes (78569 simplex iterations) in 50.07 seconds (43.82 work units)
Thread count was 8 (of 8 available processors)

Solution count 5: 22 21 20 ... 11

Time limit reached
Best objective 2.200000000000e+01, best bound 3.300000000000e+01, gap 50.0000%

Wrote result file './lp_solutions/grafo11425.38.sol'

