Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:02:48 2013

Optimize a model with 432 rows, 846 columns and 2890 nonzeros
Presolve removed 80 rows and 146 columns
Presolve time: 0.04s
Presolved: 352 rows, 700 columns, 2085 nonzeros
Variable types: 358 continuous, 342 integer (342 binary)

Root relaxation: objective 5.501960e+03, 11 iterations, 0.00 seconds

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

     0     0 5501.96022    0    2          - 5501.96022     -      -    0s
     0     0 5502.04979    0    2          - 5502.04979     -      -    0s
     0     0 5502.09866    0    2          - 5502.09866     -      -    0s
     0     0 5502.12259    0    2          - 5502.12259     -      -    0s
     0     0 5502.14621    0    2          - 5502.14621     -      -    0s
     0     0 5502.16951    0    2          - 5502.16951     -      -    0s
     0     0 5502.19251    0    2          - 5502.19251     -      -    0s
     0     0 5502.21522    0    2          - 5502.21522     -      -    0s
     0     0 5502.23763    0    2          - 5502.23763     -      -    0s
H    0     0                    5509.6667620 5502.23763  0.13%     -    0s
     0     2 5502.23763    0    2 5509.66676 5502.23763  0.13%     -    0s
*   21     2              16    5503.9228337 5503.92131  0.00%   3.3    0s

Cutting planes:
  Gomory: 1
  Cover: 2

Explored 22 nodes (118 simplex iterations) in 0.15 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.503922833748e+03, best bound 5.503921305563e+03, gap 0.0000%