Gurobi 5.0.1 (linux64) logging started Wed Apr 24 03:25:12 2013

Optimize a model with 61776 rows, 60996 columns and 243516 nonzeros
Presolve removed 78 rows and 0 columns
Presolve time: 0.28s
Presolved: 61698 rows, 60996 columns, 243438 nonzeros
Variable types: 60918 continuous, 78 integer (78 binary)

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    7207    6.6269612e+04   4.783689e+04   0.000000e+00      5s
Warning: Markowitz tolerance tightened to 0.0625
    8802    6.6698137e+04   0.000000e+00   0.000000e+00      9s

Root relaxation: objective 6.669814e+04, 8802 iterations, 8.72 seconds

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

     0     0 66698.1371    0   57          - 66698.1371     -      -    9s
H    0     0                    108713.00000 66698.1371  38.6%     -   13s
     0     0 84673.7218    0   16 108713.000 84673.7218  22.1%     -   25s
H    0     0                    103795.00000 84673.7218  18.4%     -   25s
     0     0 89892.0183    0   14 103795.000 89892.0183  13.4%     -   30s
H    0     0                    102074.00000 89892.0183  11.9%     -   31s
     0     0 90425.2522    0    5 102074.000 90425.2522  11.4%     -   32s
H    0     0                    95032.360385 90425.2522  4.85%     -   32s
H    0     0                    94125.000000 90425.2522  3.93%     -   32s
H    0     0                    90580.000000 90425.2522  0.17%     -   33s
     0     0 90425.8928    0    3 90580.0000 90425.8928  0.17%     -   33s
     0     2 90427.9992    0    3 90580.0000 90427.9992  0.17%     -   36s

Cutting planes:
  Gomory: 1
  Implied bound: 75

Explored 9 nodes (22613 simplex iterations) in 37.41 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.058000000000e+04, best bound 9.058000000000e+04, gap 0.0%