Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:44:34 2012 Optimize a model with 1 rows, 177 columns and 177 nonzeros Model has 170 quadratic objective terms Presolve removed 0 rows and 20 columns Presolve time: 0.00s Presolved: 171 rows, 327 columns, 667 nonzeros Variable types: 0 continuous, 327 integer (326 binary) Found heuristic solution: objective 55.0000000 Root relaxation: objective 0.000000e+00, 216 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 43 55.00000 0.00000 100% - 0s H 0 0 34.0000000 0.00000 100% - 0s 0 0 0.00000 0 30 34.00000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s 0 0 0.00000 0 49 27.00000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s 0 0 0.00000 0 22 24.00000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s 0 0 0.00000 0 15 18.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 12 12.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 10.00000 0.00000 100% - 0s 0 0 0.00000 0 18 10.00000 0.00000 100% - 0s 0 2 0.00000 0 18 10.00000 0.00000 100% - 0s H 27 27 9.0000000 0.00000 100% 3.0 0s H 405 189 7.0000000 0.00000 100% 10.0 0s * 506 151 19 6.0000000 1.00000 83.3% 13.5 0s * 627 0 7 5.0000000 5.00000 0.0% 33.6 0s Cutting planes: Cover: 306 MIR: 5 Zero half: 2 Explored 628 nodes (21638 simplex iterations) in 0.41 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%