Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:06:54 2012

Optimize a model with 1980 rows, 420 columns and 6280 nonzeros
Presolve removed 1080 rows and 0 columns
Presolve time: 0.03s
Presolved: 900 rows, 420 columns, 4620 nonzeros
Variable types: 0 continuous, 420 integer (420 binary)
Found heuristic solution: objective 17.0000000

Root relaxation: objective 5.000000e+00, 1309 iterations, 0.07 seconds

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

     0     0    5.00000    0   50   17.00000    5.00000  70.6%     -    0s
H    0     0                       7.0000000    5.00000  28.6%     -    0s
     0     0    5.00000    0   70    7.00000    5.00000  28.6%     -    0s
H    0     0                       6.0000000    5.00000  16.7%     -    0s
     0     0    5.00000    0   38    6.00000    5.00000  16.7%     -    0s
     0     0    5.00000    0   53    6.00000    5.00000  16.7%     -    0s
     0     0    5.00000    0   55    6.00000    5.00000  16.7%     -    0s
     0     0    5.00000    0   33    6.00000    5.00000  16.7%     -    0s
     0     0    5.00000    0   43    6.00000    5.00000  16.7%     -    0s
     0     0    5.00000    0   51    6.00000    5.00000  16.7%     -    0s
     0     0    5.00000    0   51    6.00000    5.00000  16.7%     -    0s
     0     2    5.00000    0   51    6.00000    5.00000  16.7%     -    1s

Explored 3 nodes (14079 simplex iterations) in 1.23 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%