Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:13:31 2012 Optimize a model with 1 rows, 59 columns and 59 nonzeros Model has 83 quadratic objective terms Presolve removed 0 rows and 2 columns Presolve time: 0.00s Presolved: 84 rows, 140 columns, 306 nonzeros Variable types: 0 continuous, 140 integer (139 binary) Found heuristic solution: objective 24.0000000 Root relaxation: objective 0.000000e+00, 108 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 27 24.00000 0.00000 100% - 0s 0 0 0.00000 0 31 24.00000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 0 0.00000 0 17 19.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 0 0.00000 0 15 15.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.00000 0 21 13.00000 0.00000 100% - 0s 0 0 0.00000 0 16 13.00000 0.00000 100% - 0s 0 0 0.00000 0 14 13.00000 0.00000 100% - 0s 0 0 0.00000 0 23 13.00000 0.00000 100% - 0s 0 0 0.00000 0 22 13.00000 0.00000 100% - 0s 0 2 0.00000 0 14 13.00000 0.00000 100% - 0s H 108 62 9.0000000 0.00000 100% 5.4 0s * 126 72 17 8.0000000 0.00000 100% 5.4 0s H 217 43 7.0000000 2.00000 71.4% 16.2 0s Cutting planes: Cover: 134 MIR: 2 Zero half: 1 Explored 266 nodes (5853 simplex iterations) in 0.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%