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

Optimize a model with 50 rows, 31 columns and 100 nonzeros
Presolve removed 22 rows and 12 columns
Presolve time: 0.00s
Presolved: 28 rows, 19 columns, 58 nonzeros
Variable types: 0 continuous, 19 integer (19 binary)
Found heuristic solution: objective 13.0000000

Root relaxation: objective 1.433333e+01, 21 iterations, 0.00 seconds

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

     0     0   14.33333    0   19   13.00000   14.33333  10.3%     -    0s
H    0     0                      14.0000000   14.33333  2.38%     -    0s

Explored 0 nodes (33 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.400000000000e+01, best bound 1.400000000000e+01, gap 0.0%