Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:35:44 2013

Optimize a model with 52704 rows, 51984 columns and 207504 nonzeros
Presolve removed 72 rows and 0 columns
Presolve time: 0.24s
Presolved: 52632 rows, 51984 columns, 207432 nonzeros
Variable types: 51912 continuous, 72 integer (72 binary)

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    6860    6.0896197e+04   1.974980e+02   0.000000e+00      5s
    6953    6.0901558e+04   0.000000e+00   0.000000e+00      5s

Root relaxation: objective 6.090156e+04, 6953 iterations, 5.29 seconds

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

     0     0 60901.5579    0   61          - 60901.5579     -      -    5s
H    0     0                    102395.00000 60901.5579  40.5%     -   10s
     0     0 76357.5790    0   16 102395.000 76357.5790  25.4%     -   18s
H    0     0                    96771.128114 76357.5790  21.1%     -   18s
H    0     0                    86314.000000 76357.5790  11.5%     -   18s
     0     0 79115.6569    0    3 86314.0000 79115.6569  8.34%     -   20s
H    0     0                    81369.002881 79115.6569  2.77%     -   20s
H    0     0                    80870.000000 79115.6569  2.17%     -   20s
H    0     0                    79225.000000 79115.6569  0.14%     -   20s
     0     2 79128.2885    0    3 79225.0000 79128.2885  0.12%     -   21s

Cutting planes:
  Gomory: 1
  Implied bound: 71

Explored 7 nodes (15164 simplex iterations) in 21.81 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.922500000000e+04, best bound 7.922500000000e+04, gap 0.0%