Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:14:16 2013

Optimize a model with 833 rows, 289 columns and 2601 nonzeros
Presolve removed 141 rows and 141 columns
Presolve time: 0.00s
Presolved: 692 rows, 148 columns, 2244 nonzeros
Variable types: 12 continuous, 136 integer (136 binary)
Found heuristic solution: objective 5660.0000000

Root relaxation: objective 4.064838e+03, 39 iterations, 0.00 seconds

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

     0     0 4064.83784    0    8 5660.00000 4064.83784  28.2%     -    0s
     0     0 4065.32421    0   17 5660.00000 4065.32421  28.2%     -    0s
H    0     0                    4102.0000000 4065.32421  0.89%     -    0s
H    0     0                    4090.0000000 4065.32421  0.60%     -    0s
H    0     0                    4082.0000000 4065.32421  0.41%     -    0s
     0     0 4067.35984    0   16 4082.00000 4067.35984  0.36%     -    0s
     0     0 4067.35984    0    8 4082.00000 4067.35984  0.36%     -    0s
H    0     0                    4080.0000000 4067.35984  0.31%     -    0s
     0     0 4068.00597    0   23 4080.00000 4068.00597  0.29%     -    0s
     0     0 4068.44324    0   22 4080.00000 4068.44324  0.28%     -    0s
H    0     0                    4078.0000000 4068.44324  0.23%     -    0s
     0     1 4068.73899    0   22 4078.00000 4068.73899  0.23%     -    0s

Cutting planes:
  Gomory: 8
  Cover: 1
  Implied bound: 1
  MIR: 11
  Zero half: 5

Explored 23 nodes (417 simplex iterations) in 0.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.078000000000e+03, best bound 4.078000000000e+03, gap 0.0%