Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:08:56 2013

Optimize a model with 24549 rows, 24059 columns and 96089 nonzeros
Presolve removed 2148 rows and 0 columns
Presolve time: 0.14s
Presolved: 22401 rows, 24059 columns, 91793 nonzeros
Variable types: 24010 continuous, 49 integer (49 binary)

Root relaxation: objective 5.684525e+04, 4880 iterations, 0.53 seconds

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

     0     0 56845.2493    0    3          - 56845.2493     -      -    0s
H    0     0                    56887.000000 56845.2493  0.07%     -    0s
     0     0 56845.7667    0    4 56887.0000 56845.7667  0.07%     -    0s
     0     0 56858.3077    0    2 56887.0000 56858.3077  0.05%     -    1s
H    0     0                    56861.000000 56858.3077  0.00%     -    1s

Cutting planes:
  Gomory: 1

Explored 0 nodes (4925 simplex iterations) in 1.20 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.686100000000e+04, best bound 5.685830769231e+04, gap 0.0047%