Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:02 2012 Optimize a model with 1 rows, 53 columns and 53 nonzeros Model has 66 quadratic objective terms Presolve removed 0 rows and 2 columns Presolve time: 0.00s Presolved: 67 rows, 117 columns, 249 nonzeros Variable types: 0 continuous, 117 integer (116 binary) Found heuristic solution: objective 23.0000000 Root relaxation: objective 0.000000e+00, 91 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 22 23.00000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s 0 0 0.00000 0 24 18.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.00000 0 16 17.00000 0.00000 100% - 0s H 0 0 16.0000000 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 11.0000000 0.00000 100% - 0s 0 0 0.00000 0 10 11.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.00000 0 10 6.00000 0.00000 100% - 0s 0 0 0.00000 0 10 6.00000 0.00000 100% - 0s 0 2 0.00000 0 10 6.00000 0.00000 100% - 0s H 134 40 5.0000000 0.60000 88.0% 8.4 0s * 141 28 9 4.0000000 0.60000 85.0% 8.2 0s Cutting planes: Cover: 115 MIR: 3 Zero half: 1 Explored 172 nodes (2586 simplex iterations) in 0.04 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%