Gurobi 5.0.1 (linux64) logging started Fri Nov 16 01:06:14 2012

Optimize a model with 31 rows, 20 columns and 94 nonzeros
Presolve removed 23 rows and 3 columns
Presolve time: 0.00s
Presolved: 12 rows, 17 columns, 50 nonzeros
Variable types: 0 continuous, 17 integer (17 binary)

Root relaxation: objective 4.000000e+00, 8 iterations, 0.00 seconds

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

*    0     0               0       4.0000000    4.00000   0.0%     -    0s

Explored 0 nodes (8 simplex iterations) in 0.00 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%