Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:27:48 2012 Optimize a model with 1 rows, 154 columns and 154 nonzeros Model has 119 quadratic objective terms Presolve removed 0 rows and 31 columns Presolve time: 0.00s Presolved: 120 rows, 242 columns, 480 nonzeros Variable types: 0 continuous, 242 integer (241 binary) Found heuristic solution: objective 24.0000000 Root relaxation: objective 0.000000e+00, 135 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 20 24.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.00000 0 15 17.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 11 12.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 17 10.00000 0.00000 100% - 0s 0 0 0.00000 0 17 10.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 2 0.00000 0 17 8.00000 0.00000 100% - 0s H 9 9 5.0000000 0.00000 100% 11.0 0s H 84 28 3.0000000 0.00000 100% 4.0 0s * 425 40 15 2.0000000 0.00000 100% 8.3 0s Cutting planes: Cover: 200 Explored 471 nodes (5507 simplex iterations) in 0.12 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%