Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:09:23 2013

Optimize a model with 24598 rows, 24108 columns and 96138 nonzeros
Presolve removed 49 rows and 0 columns
Presolve time: 0.11s
Presolved: 24549 rows, 24108 columns, 96089 nonzeros
Variable types: 24059 continuous, 49 integer (49 binary)

Root relaxation: objective 4.817993e+04, 3934 iterations, 1.43 seconds

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

     0     0 48179.9312    0   41          - 48179.9312     -      -    1s
H    0     0                    63679.000000 48179.9312  24.3%     -    2s
     0     0 55217.8148    0    7 63679.0000 55217.8148  13.3%     -    3s
H    0     0                    59639.544776 55217.8148  7.41%     -    3s
H    0     0                    57068.000000 55217.8148  3.24%     -    3s
H    0     0                    56884.000000 55217.8148  2.93%     -    3s
     0     0 55779.2473    0    3 56884.0000 55779.2473  1.94%     -    3s
H    0     0                    56676.716210 55779.2473  1.58%     -    3s
H    0     0                    56371.000000 55779.2473  1.05%     -    4s
H    0     0                    55924.000000 55779.2473  0.26%     -    4s
     0     2 55782.4509    0    3 55924.0000 55782.4509  0.25%     -    4s

Cutting planes:
  Gomory: 1
  Implied bound: 44

Explored 5 nodes (6802 simplex iterations) in 4.87 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.592400000000e+04, best bound 5.592400000000e+04, gap 0.0%