Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:20 2012

Optimize a model with 702 rows, 53 columns and 1404 nonzeros
Presolve removed 492 rows and 0 columns
Presolve time: 0.01s
Presolved: 210 rows, 53 columns, 1199 nonzeros
Variable types: 0 continuous, 53 integer (53 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 9.293750e+00, 92 iterations, 0.00 seconds

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

     0     0    9.29375    0   43    7.00000    9.29375  32.8%     -    0s
     0     0    8.99321    0   49    7.00000    8.99321  28.5%     -    0s
     0     0    8.93644    0   47    7.00000    8.93644  27.7%     -    0s
     0     0    8.88899    0   48    7.00000    8.88899  27.0%     -    0s
     0     0    8.86128    0   50    7.00000    8.86128  26.6%     -    0s
     0     0    8.83892    0   49    7.00000    8.83892  26.3%     -    0s
     0     0    8.83309    0   50    7.00000    8.83309  26.2%     -    0s
     0     0    8.83116    0   50    7.00000    8.83116  26.2%     -    0s
     0     2    8.82753    0   50    7.00000    8.82753  26.1%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 22
  Zero half: 7

Explored 15 nodes (653 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%