Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:28 2012

Optimize a model with 885 rows, 60 columns and 1770 nonzeros
Presolve removed 633 rows and 0 columns
Presolve time: 0.01s
Presolved: 252 rows, 60 columns, 1472 nonzeros
Variable types: 0 continuous, 60 integer (60 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.015792e+01, 147 iterations, 0.00 seconds

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

     0     0   10.15792    0   53    7.00000   10.15792  45.1%     -    0s
     0     0    9.79794    0   57    7.00000    9.79794  40.0%     -    0s
     0     0    9.76659    0   58    7.00000    9.76659  39.5%     -    0s
     0     0    9.74082    0   58    7.00000    9.74082  39.2%     -    0s
     0     0    9.73715    0   57    7.00000    9.73715  39.1%     -    0s
     0     0    9.73644    0   59    7.00000    9.73644  39.1%     -    0s
     0     0    9.73150    0   59    7.00000    9.73150  39.0%     -    0s
     0     0    9.72908    0   57    7.00000    9.72908  39.0%     -    0s
     0     0    9.72830    0   58    7.00000    9.72830  39.0%     -    0s
     0     2    9.72772    0   58    7.00000    9.72772  39.0%     -    0s

Cutting planes:
  Gomory: 2
  Clique: 31
  Zero half: 12

Explored 49 nodes (1646 simplex iterations) in 0.17 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%