Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:20:15 2012 Optimize a model with 1 rows, 122 columns and 122 nonzeros Model has 91 quadratic objective terms Presolve removed 0 rows and 34 columns Presolve time: 0.00s Presolved: 92 rows, 179 columns, 361 nonzeros Variable types: 0 continuous, 179 integer (178 binary) Found heuristic solution: objective 19.0000000 Root relaxation: objective 0.000000e+00, 104 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 9 19.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 13 9.00000 0.00000 100% - 0s 0 0 0.00000 0 11 9.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 9 8.00000 0.00000 100% - 0s 0 0 0.00000 0 8 8.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 0 0.00000 0 6 7.00000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s 0 0 0.00000 0 3 4.00000 0.00000 100% - 0s H 0 0 3.0000000 0.00000 100% - 0s 0 0 0.00000 0 3 3.00000 0.00000 100% - 0s 0 0 0.00000 0 3 3.00000 0.00000 100% - 0s 0 0 0.00000 0 3 3.00000 0.00000 100% - 0s H 0 0 2.0000000 0.00000 100% - 0s 0 2 0.00000 0 3 2.00000 0.00000 100% - 0s Cutting planes: Cover: 165 Explored 421 nodes (5808 simplex iterations) in 0.10 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%