Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:37:42 2012 Optimize a model with 37 rows, 36 columns and 126 nonzeros Presolve time: 0.00s Presolved: 37 rows, 36 columns, 126 nonzeros Variable types: 0 continuous, 36 integer (36 binary) Found heuristic solution: objective 9.0000000 Root relaxation: objective 0.000000e+00, 27 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 9.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s H 0 0 3.0000000 0.00000 100% - 0s 0 0 0.51852 0 21 3.00000 0.51852 82.7% - 0s H 0 0 2.0000000 0.51852 74.1% - 0s 0 0 0.60000 0 22 2.00000 0.60000 70.0% - 0s 0 0 0.66667 0 22 2.00000 0.66667 66.7% - 0s 0 0 0.66667 0 22 2.00000 0.66667 66.7% - 0s 0 2 0.66667 0 22 2.00000 0.66667 66.7% - 0s Cutting planes: Gomory: 1 Zero half: 4 Explored 3 nodes (90 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%