Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:26:30 2013

Optimize a model with 64 rows, 2110 columns and 24118 nonzeros
Presolve removed 22 rows and 81 columns
Presolve time: 0.10s
Presolved: 42 rows, 2029 columns, 22056 nonzeros
Variable types: 2011 continuous, 18 integer (18 binary)

Root relaxation: objective 5.420106e+03, 20 iterations, 0.00 seconds

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

     0     0 5420.10604    0    7          - 5420.10604     -      -    0s
     0     0 5421.90025    0    7          - 5421.90025     -      -    0s
     0     0 5421.90025    0    7          - 5421.90025     -      -    0s
H    0     0                    5460.6990994 5421.90025  0.71%     -    0s
H    0     0                    5459.1762496 5421.90025  0.68%     -    0s
     0     0 5441.36327    0    4 5459.17625 5441.36327  0.33%     -    0s
     0     0 5441.37419    0    6 5459.17625 5441.37419  0.33%     -    0s
     0     0 5441.37442    0    6 5459.17625 5441.37442  0.33%     -    0s
     0     0 5441.37442    0    6 5459.17625 5441.37442  0.33%     -    0s
     0     2 5441.43402    0    6 5459.17625 5441.43402  0.32%     -    0s
*   12     5              10    5451.1938835 5441.59566  0.18%   4.2    0s
*   15     4              10    5450.8531084 5441.59566  0.17%   3.8    0s
*   23     7               9    5448.0666874 5441.60192  0.12%   3.1    0s
H   28     3                    5445.7305561 5441.60322  0.08%   3.0    0s
*   30     4               9    5445.2742443 5441.60322  0.07%   2.9    0s
*   35     3               6    5441.6178882 5441.60398  0.00%   2.7    0s

Cutting planes:
  Gomory: 1
  Implied bound: 1
  Flow cover: 4

Explored 36 nodes (199 simplex iterations) in 0.24 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.441617888152e+03, best bound 5.441603977579e+03, gap 0.0003%