Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:04:42 2013

Optimize a model with 506 rows, 21206 columns and 42366 nonzeros
Presolve time: 0.03s
Presolved: 506 rows, 21206 columns, 42366 nonzeros
Variable types: 21160 continuous, 46 integer (46 binary)

Root relaxation: objective 4.762894e+04, 936 iterations, 0.02 seconds

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

     0     0 47628.9413    0    6          - 47628.9413     -      -    0s
H    0     0                    48671.000000 47628.9413  2.14%     -    0s
H    0     0                    47780.000000 47628.9413  0.32%     -    0s
     0     0 47746.4299    0    3 47780.0000 47746.4299  0.07%     -    0s
     0     0 47760.5507    0    3 47780.0000 47760.5507  0.04%     -    0s
     0     0 47765.6189    0    3 47780.0000 47765.6189  0.03%     -    0s
     0     0 47765.6189    0    6 47780.0000 47765.6189  0.03%     -    0s
     0     0 47765.6189    0    3 47780.0000 47765.6189  0.03%     -    0s
     0     0 47765.6189    0    3 47780.0000 47765.6189  0.03%     -    0s
     0     0 47765.6189    0    3 47780.0000 47765.6189  0.03%     -    0s
     0     0 47767.6000    0    1 47780.0000 47767.6000  0.03%     -    0s
     0     0 47771.3721    0    1 47780.0000 47771.3721  0.02%     -    0s
     0     0 47776.3976    0    2 47780.0000 47776.3976  0.01%     -    0s

Cutting planes:
  Implied bound: 38

Explored 0 nodes (2007 simplex iterations) in 0.42 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.778000000000e+04, best bound 4.777639763002e+04, gap 0.0075%