Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:29:20 2013

Optimize a model with 34336 rows, 33756 columns and 134676 nonzeros
Presolve removed 58 rows and 0 columns
Presolve time: 0.15s
Presolved: 34278 rows, 33756 columns, 134618 nonzeros
Variable types: 33698 continuous, 58 integer (58 binary)

Root relaxation: objective 4.500439e+04, 3311 iterations, 1.16 seconds

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

     0     0 45004.3915    0   42          - 45004.3915     -      -    1s
H    0     0                    57195.000000 45004.3915  21.3%     -    2s
H    0     0                    52908.000000 45004.3915  14.9%     -    5s
     0     0 50628.3944    0    8 52908.0000 50628.3944  4.31%     -    7s
     0     0 51306.0658    0    9 52908.0000 51306.0658  3.03%     -    8s
     0     0 51319.7334    0    5 52908.0000 51319.7334  3.00%     -    8s
H    0     0                    52755.000000 51319.7334  2.72%     -    8s
H    0     0                    51425.000000 51319.7334  0.20%     -    8s
     0     0 51349.1581    0    4 51425.0000 51349.1581  0.15%     -    9s
     0     0 51351.0245    0    2 51425.0000 51351.0245  0.14%     -    9s
     0     0 51351.0245    0   38 51425.0000 51351.0245  0.14%     -   11s
     0     0 51351.0245    0    8 51425.0000 51351.0245  0.14%     -   13s
     0     0 51351.0245    0    2 51425.0000 51351.0245  0.14%     -   13s
     0     2 51351.1648    0    2 51425.0000 51351.1648  0.14%     -   14s
*    4     2               4    51420.000000 51391.0000  0.06%   102   14s

Cutting planes:
  Gomory: 3
  Implied bound: 38

Explored 7 nodes (11896 simplex iterations) in 14.39 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.142000000000e+04, best bound 5.142000000000e+04, gap 0.0%