Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:09:09 2012

Optimize a model with 2828 rows, 552 columns and 8922 nonzeros
Presolve removed 909 rows and 2 columns
Presolve time: 0.07s
Presolved: 1942 rows, 550 columns, 11021 nonzeros
Variable types: 0 continuous, 550 integer (550 binary)
Found heuristic solution: objective 23.0000000

Root relaxation: objective 6.000000e+00, 1777 iterations, 0.15 seconds

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

     0     0    6.00000    0   70   23.00000    6.00000  73.9%     -    0s
H    0     0                      16.0000000    6.00000  62.5%     -    0s
H    0     0                      10.0000000    6.00000  40.0%     -    0s
     0     0    6.00000    0  180   10.00000    6.00000  40.0%     -    0s
H    0     0                       7.0000000    6.00000  14.3%     -    0s
     0     0    6.00000    0   14    7.00000    6.00000  14.3%     -    0s
     0     0    6.00000    0   16    7.00000    6.00000  14.3%     -    0s
     0     0    6.00000    0   32    7.00000    6.00000  14.3%     -    0s
     0     0    6.00000    0   14    7.00000    6.00000  14.3%     -    1s
     0     0    6.00000    0   16    7.00000    6.00000  14.3%     -    1s
     0     0    6.00000    0   28    7.00000    6.00000  14.3%     -    1s
     0     0    6.00000    0   28    7.00000    6.00000  14.3%     -    1s
     0     2    6.00000    0   28    7.00000    6.00000  14.3%     -    1s
   108     6 infeasible   20         7.00000    6.00000  14.3%   210    5s

Cutting planes:
  Gomory: 1
  Clique: 6
  Zero half: 10

Explored 468 nodes (62205 simplex iterations) in 6.75 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%