Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:37:50 2012 Optimize a model with 41 rows, 41 columns and 141 nonzeros Presolve time: 0.00s Presolved: 41 rows, 41 columns, 141 nonzeros Variable types: 0 continuous, 41 integer (41 binary) Found heuristic solution: objective 8.0000000 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 18 8.00000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s 0 0 0.30189 0 20 4.00000 0.30189 92.5% - 0s H 0 0 3.0000000 0.30189 89.9% - 0s 0 0 0.89556 0 24 3.00000 0.89556 70.1% - 0s H 0 0 2.0000000 0.89556 55.2% - 0s 0 0 0.96428 0 22 2.00000 0.96428 51.8% - 0s 0 0 1.00000 0 18 2.00000 1.00000 50.0% - 0s 0 0 1.00000 0 22 2.00000 1.00000 50.0% - 0s 0 0 1.00000 0 20 2.00000 1.00000 50.0% - 0s Cutting planes: Gomory: 1 Zero half: 1 Explored 0 nodes (131 simplex iterations) in 0.01 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%