Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:04 2012

Optimize a model with 13 rows, 12 columns and 42 nonzeros
Presolve time: 0.00s
Presolved: 13 rows, 12 columns, 42 nonzeros
Variable types: 0 continuous, 12 integer (12 binary)
Found heuristic solution: objective 4.0000000

Root relaxation: objective 0.000000e+00, 6 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    6    4.00000    0.00000   100%     -    0s
H    0     0                       3.0000000    0.00000   100%     -    0s
     0     0    0.50000    0    7    3.00000    0.50000  83.3%     -    0s
H    0     0                       1.0000000    0.50000  50.0%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 1

Explored 0 nodes (29 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.000000000000e+00, best bound 1.000000000000e+00, gap 0.0%