Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:10:45 2013

Optimize a model with 550 rows, 25050 columns and 50050 nonzeros
Presolve time: 0.03s
Presolved: 550 rows, 25050 columns, 50050 nonzeros
Variable types: 25000 continuous, 50 integer (50 binary)

Root relaxation: objective 4.851410e+04, 888 iterations, 0.02 seconds

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

     0     0 48514.0988    0   12          - 48514.0988     -      -    0s
H    0     0                    50376.000000 48514.0988  3.70%     -    0s
H    0     0                    48856.000000 48514.0988  0.70%     -    0s
     0     0 48764.7143    0    1 48856.0000 48764.7143  0.19%     -    0s
     0     0 48765.0769    0    1 48856.0000 48765.0769  0.19%     -    0s
H    0     0                    48766.000000 48765.0769  0.00%     -    0s

Cutting planes:
  Implied bound: 23
  Flow cover: 3

Explored 0 nodes (979 simplex iterations) in 0.21 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.876600000000e+04, best bound 4.876507692308e+04, gap 0.0019%