Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:51 2012 Optimize a model with 1207 rows, 69 columns and 2414 nonzeros Presolve removed 873 rows and 0 columns Presolve time: 0.03s Presolved: 334 rows, 69 columns, 2133 nonzeros Variable types: 0 continuous, 69 integer (69 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.110179e+01, 185 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 11.10179 0 63 7.00000 11.10179 58.6% - 0s H 0 0 8.0000000 11.10179 38.8% - 0s H 0 0 9.0000000 11.10179 23.4% - 0s 0 0 10.81254 0 62 9.00000 10.81254 20.1% - 0s 0 0 10.70990 0 66 9.00000 10.70990 19.0% - 0s 0 0 10.68163 0 68 9.00000 10.68163 18.7% - 0s 0 0 10.65998 0 68 9.00000 10.65998 18.4% - 0s 0 0 10.64296 0 67 9.00000 10.64296 18.3% - 0s 0 0 10.63469 0 67 9.00000 10.63469 18.2% - 0s 0 0 10.63149 0 67 9.00000 10.63149 18.1% - 0s 0 0 10.63025 0 68 9.00000 10.63025 18.1% - 0s 0 0 10.63023 0 68 9.00000 10.63023 18.1% - 0s 0 2 10.62820 0 68 9.00000 10.62820 18.1% - 0s Cutting planes: Clique: 30 Zero half: 4 Explored 7 nodes (670 simplex iterations) in 0.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%