Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:37:39 2012 Optimize a model with 41 rows, 37 columns and 137 nonzeros Presolve time: 0.00s Presolved: 41 rows, 37 columns, 137 nonzeros Variable types: 0 continuous, 37 integer (37 binary) Found heuristic solution: objective 8.0000000 Found heuristic solution: objective 7.0000000 Root relaxation: objective 0.000000e+00, 21 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 17 7.00000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s 0 0 0.68263 0 20 4.00000 0.68263 82.9% - 0s H 0 0 2.0000000 0.68263 65.9% - 0s 0 0 0.68421 0 21 2.00000 0.68421 65.8% - 0s Cutting planes: Gomory: 1 Mod-K: 2 Explored 0 nodes (77 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%