Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:56:26 2013

Optimize a model with 7806 rows, 1296 columns and 23976 nonzeros
Presolve removed 1377 rows and 675 columns
Presolve time: 0.05s
Presolved: 6429 rows, 621 columns, 19716 nonzeros
Variable types: 13 continuous, 608 integer (608 binary)
Found heuristic solution: objective 34238.000000

Root relaxation: objective 2.793886e+04, 1888 iterations, 0.05 seconds

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

     0     0 27938.8626    0    6 34238.0000 27938.8626  18.4%     -    0s
H    0     0                    27947.000000 27938.8626  0.03%     -    0s
H    0     0                    27946.000000 27938.8626  0.03%     -    0s
     0     0 27941.5064    0   11 27946.0000 27941.5064  0.02%     -    0s
     0     0 27941.5064    0    6 27946.0000 27941.5064  0.02%     -    0s
     0     0 27941.5297    0   11 27946.0000 27941.5297  0.02%     -    0s
     0     2 27942.4759    0   11 27946.0000 27942.4759  0.01%     -    0s
*    5     5              10    27944.000000 27944.0000   0.0%   0.0    0s

Cutting planes:
  Gomory: 6
  MIR: 4

Explored 5 nodes (1976 simplex iterations) in 0.19 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.794400000000e+04, best bound 2.794400000000e+04, gap 0.0%