Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:46:22 2013

Optimize a model with 28 rows, 246 columns and 688 nonzeros
Presolve removed 22 rows and 30 columns
Presolve time: 0.00s
Presolved: 6 rows, 216 columns, 430 nonzeros
Variable types: 216 continuous, 0 integer (0 binary)

Root relaxation: objective 5.497312e+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 5497.31217    0    1          - 5497.31217     -      -    0s
H    0     0                    5507.2686356 5497.31217  0.18%     -    0s
     0     2 5497.31217    0    1 5507.26864 5497.31217  0.18%     -    0s
*   14     2               7    5503.9213056 5503.92131   0.0%   0.8    0s

Explored 15 nodes (17 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.503921305563e+03, best bound 5.503921305563e+03, gap 0.0%