Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:43 2012 Optimize a model with 1084 rows, 67 columns and 2168 nonzeros Presolve removed 752 rows and 0 columns Presolve time: 0.02s Presolved: 332 rows, 67 columns, 1931 nonzeros Variable types: 0 continuous, 67 integer (67 binary) Found heuristic solution: objective 5.0000000 Root relaxation: objective 1.107336e+01, 222 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 11.07336 0 65 5.00000 11.07336 121% - 0s H 0 0 8.0000000 11.07336 38.4% - 0s 0 0 10.93641 0 63 8.00000 10.93641 36.7% - 0s 0 0 10.82994 0 66 8.00000 10.82994 35.4% - 0s 0 0 10.81196 0 66 8.00000 10.81196 35.1% - 0s H 0 0 9.0000000 10.81196 20.1% - 0s 0 0 10.78924 0 67 9.00000 10.78924 19.9% - 0s 0 0 10.76925 0 67 9.00000 10.76925 19.7% - 0s 0 0 10.76371 0 67 9.00000 10.76371 19.6% - 0s 0 0 10.74970 0 67 9.00000 10.74970 19.4% - 0s 0 0 10.73475 0 66 9.00000 10.73475 19.3% - 0s 0 0 10.72746 0 66 9.00000 10.72746 19.2% - 0s 0 0 10.72476 0 67 9.00000 10.72476 19.2% - 0s 0 2 10.72470 0 67 9.00000 10.72470 19.2% - 0s Cutting planes: Clique: 18 Zero half: 10 Explored 13 nodes (1047 simplex iterations) in 0.25 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%