Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:21 2012

Optimize a model with 709 rows, 54 columns and 1418 nonzeros
Presolve removed 483 rows and 0 columns
Presolve time: 0.01s
Presolved: 226 rows, 54 columns, 1261 nonzeros
Variable types: 0 continuous, 54 integer (54 binary)
Found heuristic solution: objective 6.0000000

Root relaxation: objective 9.940584e+00, 104 iterations, 0.00 seconds

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

     0     0    9.94058    0   44    6.00000    9.94058  65.7%     -    0s
H    0     0                       7.0000000    9.94058  42.0%     -    0s
H    0     0                       9.0000000    9.94058  10.5%     -    0s

Explored 0 nodes (104 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%