Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:19:22 2013

Optimize a model with 29808 rows, 29268 columns and 116748 nonzeros
Presolve removed 54 rows and 0 columns
Presolve time: 0.13s
Presolved: 29754 rows, 29268 columns, 116694 nonzeros
Variable types: 29214 continuous, 54 integer (54 binary)

Root relaxation: objective 4.629408e+04, 3790 iterations, 1.31 seconds

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

     0     0 46294.0824    0   44          - 46294.0824     -      -    1s
H    0     0                    63068.000000 46294.0824  26.6%     -    2s
     0     0 52619.6720    0   11 63068.0000 52619.6720  16.6%     -    4s
H    0     0                    58268.000000 52619.6720  9.69%     -    4s
     0     0 53939.6297    0    5 58268.0000 53939.6297  7.43%     -    5s
H    0     0                    57950.000000 53939.6297  6.92%     -    5s
     0     0 54452.5103    0    2 57950.0000 54452.5103  6.04%     -    6s
H    0     0                    56308.837069 54452.5103  3.30%     -    6s
H    0     0                    55838.000000 54452.5103  2.48%     -    6s
     0     2 54452.5915    0    2 55838.0000 54452.5915  2.48%     -    6s
H    1     1                    55651.175545 54452.5915  2.15%   0.0    6s
H    3     3                    54669.067568 54513.3597  0.28%   140    6s
H   23     1                    54583.564767 54549.8571  0.06%  63.4    7s
*   25     0               6    54572.000000 54572.0000   0.0%  63.2    7s

Cutting planes:
  Implied bound: 51

Explored 26 nodes (9876 simplex iterations) in 7.53 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.457200000000e+04, best bound 5.457200000000e+04, gap 0.0%