Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:02:41 2013

Optimize a model with 428 rows, 1244 columns and 3282 nonzeros
Presolve removed 402 rows and 1165 columns
Presolve time: 0.03s
Presolved: 26 rows, 79 columns, 158 nonzeros
Variable types: 59 continuous, 20 integer (20 binary)

Root relaxation: objective 5.281733e+03, 5 iterations, 0.00 seconds

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

     0     0 5281.73269    0    1          - 5281.73269     -      -    0s
     0     0 5296.28793    0    2          - 5296.28793     -      -    0s
     0     0 5296.28805    0    2          - 5296.28805     -      -    0s
     0     0 5296.30719    0    2          - 5296.30719     -      -    0s
H    0     0                    5296.3125573 5296.30719  0.00%     -    0s

Cutting planes:
  Cover: 1
  Implied bound: 1
  Flow cover: 1

Explored 0 nodes (18 simplex iterations) in 0.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.296312557325e+03, best bound 5.296307194122e+03, gap 0.0001%