Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:07:50 2012

Optimize a model with 2706 rows, 506 columns and 8536 nonzeros
Presolve removed 1474 rows and 0 columns
Presolve time: 0.04s
Presolved: 1232 rows, 506 columns, 6754 nonzeros
Variable types: 0 continuous, 506 integer (506 binary)
Found heuristic solution: objective 15.0000000

Root relaxation: objective 6.000000e+00, 2002 iterations, 0.13 seconds

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

     0     0    6.00000    0   10   15.00000    6.00000  60.0%     -    0s
H    0     0                       7.0000000    6.00000  14.3%     -    0s
     0     0    6.00000    0   44    7.00000    6.00000  14.3%     -    0s
     0     0    6.00000    0   19    7.00000    6.00000  14.3%     -    0s
H    0     0                       6.0000000    6.00000   0.0%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 3
  Zero half: 3

Explored 0 nodes (4811 simplex iterations) in 0.40 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%