Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:33:13 2012 Optimize a model with 1 rows, 159 columns and 159 nonzeros Model has 133 quadratic objective terms Presolve removed 0 rows and 26 columns Presolve time: 0.00s Presolved: 134 rows, 266 columns, 532 nonzeros Variable types: 0 continuous, 266 integer (265 binary) Found heuristic solution: objective 36.0000000 Root relaxation: objective 0.000000e+00, 173 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 38 36.00000 0.00000 100% - 0s 0 0 0.00000 0 24 36.00000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 17.00000 0.00000 100% - 0s 0 0 0.00000 0 49 17.00000 0.00000 100% - 0s 0 0 0.00000 0 12 17.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 10.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 16 9.00000 0.00000 100% - 0s 0 0 0.00000 0 16 9.00000 0.00000 100% - 0s 0 2 0.00000 0 16 9.00000 0.00000 100% - 0s H 144 84 8.0000000 0.00000 100% 2.3 0s H 297 90 5.0000000 0.00000 100% 4.5 0s H 473 106 4.0000000 0.34483 91.4% 8.1 0s * 503 40 10 3.0000000 1.00000 66.7% 9.5 0s Cutting planes: Cover: 227 MIR: 6 Zero half: 5 Explored 548 nodes (7542 simplex iterations) in 0.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%