Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:09:19 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 4.597837e+04, 3266 iterations, 0.99 seconds

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

     0     0 45978.3716    0   39          - 45978.3716     -      -    1s
H    0     0                    59304.000000 45978.3716  22.5%     -    1s
     0     0 54068.6138    0    4 59304.0000 54068.6138  8.83%     -    2s
H    0     0                    56101.735402 54068.6138  3.62%     -    2s
H    0     0                    55143.000000 54068.6138  1.95%     -    2s
     0     0 54260.3225    0    4 55143.0000 54260.3225  1.60%     -    2s
H    0     0                    54733.000000 54260.3225  0.86%     -    2s
H    0     0                    54298.000000 54260.3225  0.07%     -    2s
     0     0 54263.6765    0    2 54298.0000 54263.6765  0.06%     -    3s
     0     2 54264.0279    0    2 54298.0000 54264.0279  0.06%     -    3s

Cutting planes:
  Gomory: 2
  Implied bound: 41

Explored 2 nodes (5404 simplex iterations) in 3.40 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.429800000000e+04, best bound 5.429749688731e+04, gap 0.0009%