Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:00:46 2013

Optimize a model with 41 rows, 36 columns and 126 nonzeros
Presolve removed 18 rows and 18 columns
Presolve time: 0.00s
Presolved: 23 rows, 18 columns, 78 nonzeros
Variable types: 3 continuous, 15 integer (15 binary)
Found heuristic solution: objective 457.0000000

Root relaxation: objective 4.485000e+02, 7 iterations, 0.00 seconds

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

     0     0  448.50000    0    4  457.00000  448.50000  1.86%     -    0s
     0     0     cutoff    0       457.00000  456.00046  0.22%     -    0s

Explored 0 nodes (14 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.570000000000e+02, best bound 4.570000000000e+02, gap 0.0%