Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:16:19 2013

Optimize a model with 583 rows, 28143 columns and 56233 nonzeros
Presolve time: 0.04s
Presolved: 583 rows, 28143 columns, 56233 nonzeros
Variable types: 28090 continuous, 53 integer (53 binary)

Root relaxation: objective 5.588125e+04, 1010 iterations, 0.02 seconds

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

     0     0 55881.2482    0    8          - 55881.2482     -      -    0s
H    0     0                    56947.000000 55881.2482  1.87%     -    0s
     0     0 56725.3561    0    3 56947.0000 56725.3561  0.39%     -    0s
     0     0 56734.9888    0    4 56947.0000 56734.9888  0.37%     -    0s
     0     0 56753.3538    0    2 56947.0000 56753.3538  0.34%     -    0s
H    0     0                    56831.000000 56753.3538  0.14%     -    0s
     0     0 56753.3538    0    7 56831.0000 56753.3538  0.14%     -    0s
     0     0 56803.1565    0    1 56831.0000 56803.1565  0.05%     -    0s
     0     0 56803.1565    0    1 56831.0000 56803.1565  0.05%     -    0s
     0     0 56814.7143    0    1 56831.0000 56814.7143  0.03%     -    0s

Cutting planes:
  Implied bound: 71

Explored 0 nodes (2249 simplex iterations) in 0.59 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.683100000000e+04, best bound 5.683100000000e+04, gap 0.0%