Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:08:52 2013

Optimize a model with 28 rows, 2046 columns and 6088 nonzeros
Presolve removed 22 rows and 27 columns
Presolve time: 0.01s
Presolved: 6 rows, 2019 columns, 4036 nonzeros
Variable types: 2019 continuous, 0 integer (0 binary)

Root relaxation: objective 5.281733e+03, 6 iterations, 0.00 seconds

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

     0     0 5281.73269    0    1          - 5281.73269     -      -    0s
     0     2 5281.73269    0    1          - 5281.73269     -      -    0s
*   20     4              10    5296.3130139 5296.31301   0.0%   1.4    0s

Explored 21 nodes (33 simplex iterations) in 0.03 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.296313013899e+03, best bound 5.296313013899e+03, gap 0.0%