Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:41 2013

Optimize a model with 480 rows, 5420 columns and 14620 nonzeros
Presolve removed 20 rows and 500 columns
Presolve time: 0.01s
Presolved: 460 rows, 4920 columns, 13820 nonzeros
Variable types: 4820 continuous, 100 integer (100 binary)

Root relaxation: objective 4.642213e+04, 552 iterations, 0.01 seconds

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

     0     0 46422.1265    0    9          - 46422.1265     -      -    0s
     0     0 46431.0290    0    6          - 46431.0290     -      -    0s
     0     0 46431.1862    0    9          - 46431.1862     -      -    0s
     0     0 46432.5330    0    6          - 46432.5330     -      -    0s
     0     0 46432.5330    0    6          - 46432.5330     -      -    0s
     0     0 46432.5330    0    6          - 46432.5330     -      -    0s
H    0     0                    47377.636012 46432.5330  1.99%     -    0s
     0     2 46432.5330    0    6 47377.6360 46432.5330  1.99%     -    0s
*    8     5               7    46797.785654 46594.8010  0.43%  33.8    0s
*   27     6               9    46757.920900 46715.2494  0.09%  18.9    0s
*   28     5               8    46757.522593 46715.2494  0.09%  18.3    0s
H   32     0                    46743.553085 46719.7863  0.05%  16.0    0s

Cutting planes:
  Flow cover: 6

Explored 34 nodes (1270 simplex iterations) in 0.21 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.674355308496e+04, best bound 4.674272071620e+04, gap 0.0018%