Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:52:33 2013

Optimize a model with 715 rows, 42315 columns and 84565 nonzeros
Presolve time: 0.06s
Presolved: 715 rows, 42315 columns, 84565 nonzeros
Variable types: 42250 continuous, 65 integer (65 binary)

Root relaxation: objective 7.272698e+04, 1660 iterations, 0.05 seconds

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

     0     0 72726.9785    0    6          - 72726.9785     -      -    0s
H    0     0                    75675.000000 72726.9785  3.90%     -    0s
     0     0 73063.3466    0    5 75675.0000 73063.3466  3.45%     -    0s
     0     0 73097.6305    0    5 75675.0000 73097.6305  3.41%     -    0s
H    0     0                    75535.000000 73097.6305  3.23%     -    0s
     0     0 73126.8562    0    5 75535.0000 73126.8562  3.19%     -    0s
H    0     0                    75048.000000 73126.8562  2.56%     -    0s
     0     0 73131.8282    0    5 75048.0000 73131.8282  2.55%     -    0s
H    0     0                    74855.000000 73131.8282  2.30%     -    0s
     0     0 73136.5021    0    4 74855.0000 73136.5021  2.30%     -    0s
     0     0 73136.5021    0    4 74855.0000 73136.5021  2.30%     -    0s
     0     0 73136.5021    0    4 74855.0000 73136.5021  2.30%     -    0s
H    0     0                    74533.000000 73136.5021  1.87%     -    1s
     0     2 73151.3604    0    4 74533.0000 73151.3604  1.85%     -    1s
H    4     4                    73900.882144 73224.8998  0.91%  46.5    1s
*   11     6              11    73352.000000 73224.8998  0.17%  38.8    1s

Cutting planes:
  Implied bound: 115
  Flow cover: 5

Explored 20 nodes (2767 simplex iterations) in 1.41 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.335200000000e+04, best bound 7.335200000000e+04, gap 0.0%