Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:14 2012

Optimize a model with 438 rows, 41 columns and 876 nonzeros
Presolve removed 308 rows and 0 columns
Presolve time: 0.00s
Presolved: 130 rows, 41 columns, 734 nonzeros
Variable types: 0 continuous, 41 integer (41 binary)
Found heuristic solution: objective 5.0000000

Root relaxation: objective 7.976331e+00, 77 iterations, 0.00 seconds

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

     0     0    7.97633    0   36    5.00000    7.97633  59.5%     -    0s
H    0     0                       6.0000000    7.97633  32.9%     -    0s
     0     0    7.50000    0   35    6.00000    7.50000  25.0%     -    0s
     0     0    7.50000    0   33    6.00000    7.50000  25.0%     -    0s
     0     0    7.50000    0   31    6.00000    7.50000  25.0%     -    0s
     0     0    7.47867    0   36    6.00000    7.47867  24.6%     -    0s
     0     0    7.41451    0   37    6.00000    7.41451  23.6%     -    0s
H    0     0                       7.0000000    7.41451  5.92%     -    0s

Cutting planes:
  Clique: 15
  Zero half: 6

Explored 0 nodes (248 simplex iterations) in 0.03 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%