Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:23 2012

Optimize a model with 87 rows, 56 columns and 271 nonzeros
Presolve time: 0.00s
Presolved: 87 rows, 56 columns, 271 nonzeros
Variable types: 0 continuous, 56 integer (56 binary)
Found heuristic solution: objective 25.0000000
Found heuristic solution: objective 20.0000000

Root relaxation: objective 0.000000e+00, 21 iterations, 0.00 seconds

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

     0     0    0.00000    0   13   20.00000    0.00000   100%     -    0s
     0     0    0.69231    0   15   20.00000    0.69231  96.5%     -    0s
     0     0    0.69231    0   15   20.00000    0.69231  96.5%     -    0s
     0     0    0.76600    0   23   20.00000    0.76600  96.2%     -    0s
     0     0    0.84615    0   15   20.00000    0.84615  95.8%     -    0s
     0     0    0.84615    0   15   20.00000    0.84615  95.8%     -    0s
     0     0    0.84615    0   15   20.00000    0.84615  95.8%     -    0s
     0     2    0.94565    0   15   20.00000    0.94565  95.3%     -    0s
*   12    12               7      19.0000000    6.25000  67.1%  15.2    0s
*   16    10               7      17.0000000    6.25000  63.2%  12.5    0s

Cutting planes:
  Gomory: 1
  Mod-K: 5

Explored 131 nodes (977 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%