Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:53:01 2013

Optimize a model with 297 rows, 7317 columns and 14607 nonzeros
Presolve time: 0.01s
Presolved: 297 rows, 7317 columns, 14607 nonzeros
Variable types: 7290 continuous, 27 integer (27 binary)

Root relaxation: objective 2.841728e+04, 423 iterations, 0.01 seconds

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

     0     0 28417.2766    0    3          - 28417.2766     -      -    0s
H    0     0                    28541.000000 28417.2766  0.43%     -    0s
     0     0 28540.4667    0    1 28541.0000 28540.4667  0.00%     -    0s

Cutting planes:
  Implied bound: 51
  Flow cover: 4

Explored 0 nodes (459 simplex iterations) in 0.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.854100000000e+04, best bound 2.854046666667e+04, gap 0.0019%