Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:46:14 2013

Optimize a model with 28 rows, 275 columns and 2035 nonzeros
Presolve removed 12 rows and 68 columns
Presolve time: 0.00s
Presolved: 16 rows, 207 columns, 1812 nonzeros
Variable types: 200 continuous, 7 integer (7 binary)
Found heuristic solution: objective 2148.8203230

Root relaxation: objective 2.147393e+03, 7 iterations, 0.00 seconds

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

     0     0 2147.39330    0    3 2148.82032 2147.39330  0.07%     -    0s
     0     0 2147.68500    0    6 2148.82032 2147.68500  0.05%     -    0s
     0     0 2147.71883    0    6 2148.82032 2147.71883  0.05%     -    0s
     0     0 2147.80900    0    3 2148.82032 2147.80900  0.05%     -    0s
     0     0 2147.81693    0    6 2148.82032 2147.81693  0.05%     -    0s
     0     0     cutoff    0      2148.82032 2148.82032   0.0%     -    0s

Cutting planes:
  Implied bound: 3
  Flow cover: 3
  Zero half: 1

Explored 0 nodes (37 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.148820323028e+03, best bound 2.148820323028e+03, gap 0.0%