Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:07:34 2013

Optimize a model with 528 rows, 23088 columns and 46128 nonzeros
Presolve time: 0.03s
Presolved: 528 rows, 23088 columns, 46128 nonzeros
Variable types: 23040 continuous, 48 integer (48 binary)

Root relaxation: objective 5.213831e+04, 987 iterations, 0.02 seconds

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

     0     0 52138.3141    0    6          - 52138.3141     -      -    0s
H    0     0                    53944.000000 52138.3141  3.35%     -    0s
     0     0 52905.1482    0    5 53944.0000 52905.1482  1.93%     -    0s
H    0     0                    53636.000000 52905.1482  1.36%     -    0s
     0     0 52975.7090    0    3 53636.0000 52975.7090  1.23%     -    0s
H    0     0                    53532.000000 52975.7090  1.04%     -    0s
     0     0 52982.5806    0    6 53532.0000 52982.5806  1.03%     -    0s
H    0     0                    53511.000000 52982.5806  0.99%     -    0s
     0     0 52986.3548    0    3 53511.0000 52986.3548  0.98%     -    0s
H    0     0                    53503.000000 52986.3548  0.97%     -    0s
     0     0 52986.9167    0    5 53503.0000 52986.9167  0.96%     -    0s
     0     0 52991.0060    0    4 53503.0000 52991.0060  0.96%     -    0s
H    0     0                    53498.000000 52991.0060  0.95%     -    0s
     0     2 53011.8814    0    4 53498.0000 53011.8814  0.91%     -    0s
H    3     3                    53103.126129 53044.9169  0.11%  50.7    0s
H    4     3                    53101.000000 53044.9169  0.11%  41.8    0s
*    5     3               5    53086.000000 53044.9169  0.08%  35.4    0s

Cutting planes:
  Implied bound: 77
  Flow cover: 3

Explored 9 nodes (1606 simplex iterations) in 0.61 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.308600000000e+04, best bound 5.308600000000e+04, gap 0.0%