Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:37:42 2012 Optimize a model with 49 rows, 42 columns and 162 nonzeros Presolve time: 0.00s Presolved: 49 rows, 42 columns, 162 nonzeros Variable types: 0 continuous, 42 integer (42 binary) Found heuristic solution: objective 11.0000000 Found heuristic solution: objective 9.0000000 Root relaxation: objective 0.000000e+00, 24 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 9.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.47059 0 18 6.00000 0.47059 92.2% - 0s H 0 0 5.0000000 0.47059 90.6% - 0s 0 0 1.00000 0 19 5.00000 1.00000 80.0% - 0s 0 0 1.12249 0 22 5.00000 1.12249 77.6% - 0s 0 0 1.22177 0 23 5.00000 1.22177 75.6% - 0s 0 0 1.22177 0 23 5.00000 1.22177 75.6% - 0s 0 2 1.22457 0 23 5.00000 1.22457 75.5% - 0s * 9 1 4 4.0000000 1.42187 64.5% 9.2 0s Cutting planes: Gomory: 3 Mod-K: 9 Explored 17 nodes (284 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%