Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:53:37 2013

Optimize a model with 825 rows, 56325 columns and 112575 nonzeros
Presolve time: 0.08s
Presolved: 825 rows, 56325 columns, 112575 nonzeros
Variable types: 56250 continuous, 75 integer (75 binary)

Root relaxation: objective 8.354126e+04, 2169 iterations, 0.07 seconds

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

     0     0 83541.2552    0   10          - 83541.2552     -      -    0s
H    0     0                    90916.000000 83541.2552  8.11%     -    0s
H    0     0                    90321.000000 83541.2552  7.51%     -    0s
H    0     0                    85347.000000 83541.2552  2.12%     -    0s
     0     0 83683.2015    0    8 85347.0000 83683.2015  1.95%     -    0s
     0     0 83708.7378    0    7 85347.0000 83708.7378  1.92%     -    0s
     0     0 83711.2525    0    7 85347.0000 83711.2525  1.92%     -    0s
     0     0 83711.6242    0    7 85347.0000 83711.6242  1.92%     -    0s
     0     0 83712.0094    0    5 85347.0000 83712.0094  1.92%     -    0s
     0     0 83712.0094    0    5 85347.0000 83712.0094  1.92%     -    1s
H    0     0                    84262.000000 83712.0094  0.65%     -    1s
     0     2 83725.0568    0    5 84262.0000 83725.0568  0.64%     -    1s
H   11     7                    83983.000000 83813.9233  0.20%  49.6    1s
*   12     4              10    83945.000000 83813.9233  0.16%  47.0    1s

Cutting planes:
  Implied bound: 134
  Flow cover: 3

Explored 27 nodes (3530 simplex iterations) in 1.95 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.394500000000e+04, best bound 8.394101401617e+04, gap 0.0047%