Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:42:07 2013

Optimize a model with 54166 rows, 53436 columns and 213306 nonzeros
Presolve removed 73 rows and 0 columns
Presolve time: 0.24s
Presolved: 54093 rows, 53436 columns, 213233 nonzeros
Variable types: 53363 continuous, 73 integer (73 binary)

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    6739    6.5996026e+04   2.508210e+03   0.000000e+00      5s
    7713    6.6303613e+04   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 6.630361e+04, 7713 iterations, 7.08 seconds

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

     0     0 66303.6133    0   58          - 66303.6133     -      -    7s
H    0     0                    121469.00000 66303.6133  45.4%     -   12s
     0     0 89779.2878    0   22 121469.000 89779.2878  26.1%     -   22s
H    0     0                    111477.92506 89779.2878  19.5%     -   22s
H    0     0                    101470.00000 89779.2878  11.5%     -   23s
     0     0 92448.0797    0    8 101470.000 92448.0797  8.89%     -   25s
H    0     0                    97454.000000 92448.0797  5.14%     -   25s
H    0     0                    92831.000000 92448.0797  0.41%     -   25s
     0     0 92564.6979    0    7 92831.0000 92564.6979  0.29%     -   26s
H    0     0                    92747.000000 92564.6979  0.20%     -   26s
     0     0 92565.5548    0    7 92747.0000 92565.5548  0.20%     -   27s
     0     2 92569.3855    0    7 92747.0000 92569.3855  0.19%     -   28s
*    7     5               6    92728.000000 92658.6070  0.07%   171   28s

Cutting planes:
  Gomory: 1
  Implied bound: 71

Explored 13 nodes (19081 simplex iterations) in 29.09 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.272800000000e+04, best bound 9.272800000000e+04, gap 0.0%