Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:37:44 2012 Optimize a model with 39 rows, 38 columns and 133 nonzeros Presolve time: 0.00s Presolved: 39 rows, 38 columns, 133 nonzeros Variable types: 0 continuous, 38 integer (38 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 0.000000e+00, 25 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 16 6.00000 0.00000 100% - 0s H 0 0 3.0000000 0.00000 100% - 0s H 0 0 2.0000000 0.00000 100% - 0s 0 0 0.43750 0 17 2.00000 0.43750 78.1% - 0s 0 0 0.88583 0 20 2.00000 0.88583 55.7% - 0s 0 0 0.89342 0 21 2.00000 0.89342 55.3% - 0s 0 0 0.89342 0 21 2.00000 0.89342 55.3% - 0s 0 2 1.00000 0 21 2.00000 1.00000 50.0% - 0s Cutting planes: Gomory: 2 Mod-K: 1 Explored 9 nodes (117 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%