Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:02:35 2013

Optimize a model with 30 rows, 532 columns and 4437 nonzeros
Presolve removed 12 rows and 124 columns
Presolve time: 0.01s
Presolved: 18 rows, 408 columns, 4014 nonzeros
Variable types: 400 continuous, 8 integer (8 binary)
Found heuristic solution: objective 2148.8203230

Root relaxation: objective 2.147393e+03, 8 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    4 2148.82032 2147.39330  0.07%     -    0s
     0     0 2147.53137    0    4 2148.82032 2147.53137  0.06%     -    0s
     0     0 2147.68719    0    7 2148.82032 2147.68719  0.05%     -    0s
     0     0 2147.72119    0    7 2148.82032 2147.72119  0.05%     -    0s
     0     0 2147.74864    0    5 2148.82032 2147.74864  0.05%     -    0s
     0     0 2147.76171    0    7 2148.82032 2147.76171  0.05%     -    0s
     0     0     cutoff    0      2148.82032 2148.82032   0.0%     -    0s

Cutting planes:
  Cover: 2
  Implied bound: 2
  Flow cover: 2

Explored 0 nodes (55 simplex iterations) in 0.03 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%