Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:13 2012

Optimize a model with 403 rows, 40 columns and 806 nonzeros
Presolve removed 275 rows and 0 columns
Presolve time: 0.00s
Presolved: 128 rows, 40 columns, 661 nonzeros
Variable types: 0 continuous, 40 integer (40 binary)
Found heuristic solution: objective 4.0000000

Root relaxation: objective 7.817391e+00, 89 iterations, 0.00 seconds

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

     0     0    7.81739    0   37    4.00000    7.81739  95.4%     -    0s
H    0     0                       6.0000000    7.81739  30.3%     -    0s
     0     0    7.45148    0   38    6.00000    7.45148  24.2%     -    0s
     0     0    7.39900    0   36    6.00000    7.39900  23.3%     -    0s
     0     0    7.37272    0   37    6.00000    7.37272  22.9%     -    0s
     0     0    7.33140    0   37    6.00000    7.33140  22.2%     -    0s
     0     0    7.32338    0   38    6.00000    7.32338  22.1%     -    0s
     0     0    7.31768    0   38    6.00000    7.31768  22.0%     -    0s
     0     2    7.30770    0   38    6.00000    7.30770  21.8%     -    0s

Cutting planes:
  Clique: 10
  Zero half: 14

Explored 7 nodes (333 simplex iterations) in 0.04 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%