Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:07:52 2013

Optimize a model with 748 rows, 46308 columns and 92548 nonzeros
Presolve time: 0.07s
Presolved: 748 rows, 46308 columns, 92548 nonzeros
Variable types: 46240 continuous, 68 integer (68 binary)

Root relaxation: objective 8.371402e+04, 1771 iterations, 0.05 seconds

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

     0     0 83714.0229    0    6          - 83714.0229     -      -    0s
H    0     0                    87056.000000 83714.0229  3.84%     -    0s
H    0     0                    83852.000000 83714.0229  0.16%     -    0s
     0     0 83791.3885    0    6 83852.0000 83791.3885  0.07%     -    0s
     0     0 83791.3885    0    6 83852.0000 83791.3885  0.07%     -    0s
     0     0 83791.3885    0    6 83852.0000 83791.3885  0.07%     -    0s
     0     0 83801.1211    0    6 83852.0000 83801.1211  0.06%     -    0s
     0     0 83804.2154    0    4 83852.0000 83804.2154  0.06%     -    0s
     0     0 83804.4183    0    4 83852.0000 83804.4183  0.06%     -    0s
     0     0 83804.4322    0    3 83852.0000 83804.4322  0.06%     -    0s
     0     0 83806.4208    0    2 83852.0000 83806.4208  0.05%     -    0s
     0     2 83815.5600    0    2 83852.0000 83815.5600  0.04%     -    0s

Cutting planes:
  Implied bound: 45
  Flow cover: 9

Explored 7 nodes (3518 simplex iterations) in 1.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.385200000000e+04, best bound 8.385200000000e+04, gap 0.0%