Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:48:35 2012

Optimize a model with 53 rows, 29 columns and 106 nonzeros
Presolve removed 7 rows and 1 columns
Presolve time: 0.00s
Presolved: 46 rows, 28 columns, 96 nonzeros
Variable types: 0 continuous, 28 integer (28 binary)
Found heuristic solution: objective 11.0000000

Root relaxation: objective 1.400000e+01, 35 iterations, 0.00 seconds

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

     0     0   14.00000    0   20   11.00000   14.00000  27.3%     -    0s
H    0     0                      12.0000000   14.00000  16.7%     -    0s
     0     0   13.60000    0   28   12.00000   13.60000  13.3%     -    0s
H    0     0                      13.0000000   13.60000  4.62%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 4

Explored 0 nodes (64 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%