Gurobi 5.0.1 (linux64) logging started Wed Apr 24 02:26:37 2013

Optimize a model with 51262 rows, 50552 columns and 201782 nonzeros
Presolve removed 71 rows and 0 columns
Presolve time: 0.23s
Presolved: 51191 rows, 50552 columns, 201711 nonzeros
Variable types: 50481 continuous, 71 integer (71 binary)

Root relaxation: objective 6.035710e+04, 6314 iterations, 3.33 seconds

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

     0     0 60357.0981    0   54          - 60357.0981     -      -    3s
H    0     0                    94509.000000 60357.0981  36.1%     -    5s
     0     0 72760.0992    0    9 94509.0000 72760.0992  23.0%     -   11s
H    0     0                    83357.764117 72760.0992  12.7%     -   11s
H    0     0                    76345.000000 72760.0992  4.70%     -   12s
     0     0 74069.2935    0    6 76345.0000 74069.2935  2.98%     -   13s
     0     0 74700.2847    0    3 76345.0000 74700.2847  2.15%     -   14s
H    0     0                    76249.727844 74700.2847  2.03%     -   14s
H    0     0                    75593.000000 74700.2847  1.18%     -   14s
H    0     0                    74798.000000 74700.2847  0.13%     -   14s
     0     0 74703.6459    0    2 74798.0000 74703.6459  0.13%     -   14s
     0     0 74735.6286    0    1 74798.0000 74735.6286  0.08%     -   15s
H    0     0                    74744.000000 74735.6286  0.01%     -   15s
     0     0 74735.6286    0   46 74744.0000 74735.6286  0.01%     -   19s
     0     0 74735.6286    0    5 74744.0000 74735.6286  0.01%     -   23s
     0     0 74735.6286    0    3 74744.0000 74735.6286  0.01%     -   24s
     0     0 74735.6286    0    1 74744.0000 74735.6286  0.01%     -   24s

Cutting planes:
  Gomory: 3
  Implied bound: 50

Explored 0 nodes (21689 simplex iterations) in 25.28 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.474400000000e+04, best bound 7.474400000000e+04, gap 0.0%