Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:37:44 2012 Optimize a model with 55 rows, 46 columns and 181 nonzeros Presolve time: 0.00s Presolved: 55 rows, 46 columns, 181 nonzeros Variable types: 0 continuous, 46 integer (46 binary) Found heuristic solution: objective 10.0000000 Root relaxation: objective 0.000000e+00, 29 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 19 10.00000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s H 0 0 3.0000000 0.00000 100% - 0s 0 0 0.59292 0 23 3.00000 0.59292 80.2% - 0s 0 0 0.77452 0 23 3.00000 0.77452 74.2% - 0s 0 0 0.77822 0 24 3.00000 0.77822 74.1% - 0s 0 2 0.78333 0 24 3.00000 0.78333 73.9% - 0s Cutting planes: Gomory: 1 Zero half: 2 Mod-K: 2 Explored 3 nodes (133 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%