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

Optimize a model with 667 rows, 52 columns and 1334 nonzeros
Presolve removed 482 rows and 0 columns
Presolve time: 0.01s
Presolved: 185 rows, 52 columns, 1034 nonzeros
Variable types: 0 continuous, 52 integer (52 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 9.568412e+00, 111 iterations, 0.00 seconds

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

     0     0    9.56841    0   48    7.00000    9.56841  36.7%     -    0s
     0     0    9.20858    0   45    7.00000    9.20858  31.6%     -    0s
     0     0    9.14390    0   48    7.00000    9.14390  30.6%     -    0s
     0     0    9.12750    0   47    7.00000    9.12750  30.4%     -    0s
     0     0    9.12142    0   48    7.00000    9.12142  30.3%     -    0s
     0     0    9.11394    0   48    7.00000    9.11394  30.2%     -    0s
     0     0    9.11238    0   48    7.00000    9.11238  30.2%     -    0s
     0     2    9.10873    0   48    7.00000    9.10873  30.1%     -    0s

Cutting planes:
  Clique: 23
  Zero half: 16

Explored 21 nodes (731 simplex iterations) in 0.08 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%