Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:59:40 2013

Optimize a model with 451 rows, 16851 columns and 33661 nonzeros
Presolve time: 0.02s
Presolved: 451 rows, 16851 columns, 33661 nonzeros
Variable types: 16810 continuous, 41 integer (41 binary)

Root relaxation: objective 4.995380e+04, 978 iterations, 0.02 seconds

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

     0     0 49953.8029    0    5          - 49953.8029     -      -    0s
H    0     0                    50136.000000 49953.8029  0.36%     -    0s
     0     0 50071.8281    0    2 50136.0000 50071.8281  0.13%     -    0s
     0     0 50072.0044    0    2 50136.0000 50072.0044  0.13%     -    0s
     0     0 50074.2084    0    3 50136.0000 50074.2084  0.12%     -    0s
     0     0 50074.7085    0    2 50136.0000 50074.7085  0.12%     -    0s
     0     0 50074.7085    0    2 50136.0000 50074.7085  0.12%     -    0s
     0     0 50075.6138    0    2 50136.0000 50075.6138  0.12%     -    0s
     0     0 50077.6316    0    3 50136.0000 50077.6316  0.12%     -    0s
     0     0 50080.7133    0    2 50136.0000 50080.7133  0.11%     -    0s
H    0     0                    50107.000000 50080.7133  0.05%     -    0s
     0     0 50080.7133    0    3 50107.0000 50080.7133  0.05%     -    0s
     0     0 50080.8182    0    1 50107.0000 50080.8182  0.05%     -    0s
     0     0 50080.8182    0    1 50107.0000 50080.8182  0.05%     -    0s
     0     0 50080.8182    0    1 50107.0000 50080.8182  0.05%     -    0s

Cutting planes:
  Implied bound: 13
  Flow cover: 1

Explored 0 nodes (1721 simplex iterations) in 0.40 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.010700000000e+04, best bound 5.010700000000e+04, gap 0.0%