Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:08:25 2012

Optimize a model with 3059 rows, 552 columns and 9637 nonzeros
Presolve removed 617 rows and 0 columns
Presolve time: 0.04s
Presolved: 2442 rows, 552 columns, 13222 nonzeros
Variable types: 0 continuous, 552 integer (552 binary)
Found heuristic solution: objective 17.0000000

Root relaxation: objective 5.000000e+00, 1827 iterations, 0.21 seconds

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

     0     0    5.00000    0   76   17.00000    5.00000  70.6%     -    0s
H    0     0                       6.0000000    5.00000  16.7%     -    0s
     0     0    5.00000    0  132    6.00000    5.00000  16.7%     -    0s
     0     0    5.00000    0   80    6.00000    5.00000  16.7%     -    1s
     0     0    5.00000    0  116    6.00000    5.00000  16.7%     -    1s
     0     0    5.00000    0   97    6.00000    5.00000  16.7%     -    1s
     0     0    5.00000    0   82    6.00000    5.00000  16.7%     -    2s
     0     0    5.00000    0   93    6.00000    5.00000  16.7%     -    2s
     0     0    5.00000    0  113    6.00000    5.00000  16.7%     -    3s
     0     0    5.00000    0  110    6.00000    5.00000  16.7%     -    3s
     0     0    5.00000    0   82    6.00000    5.00000  16.7%     -    4s
     0     0    5.00000    0   85    6.00000    5.00000  16.7%     -    4s
     0     0    5.00000    0   84    6.00000    5.00000  16.7%     -    4s
     0     2    5.00000    0   80    6.00000    5.00000  16.7%     -    4s
     2     3    5.00000    1   84    6.00000    5.00000  16.7%   276    5s

Explored 3 nodes (31084 simplex iterations) in 5.27 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%