Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:27:30 2012 Optimize a model with 1 rows, 153 columns and 153 nonzeros Model has 145 quadratic objective terms Presolve removed 0 rows and 24 columns Presolve time: 0.00s Presolved: 146 rows, 274 columns, 564 nonzeros Variable types: 0 continuous, 274 integer (273 binary) Found heuristic solution: objective 40.0000000 Root relaxation: objective 0.000000e+00, 176 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 40.00000 0.00000 100% - 0s H 0 0 35.0000000 0.00000 100% - 0s 0 0 0.00000 0 30 35.00000 0.00000 100% - 0s H 0 0 29.0000000 0.00000 100% - 0s H 0 0 25.0000000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s 0 0 0.00000 0 39 22.00000 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 24 17.00000 0.00000 100% - 0s 0 0 0.00000 0 23 17.00000 0.00000 100% - 0s 0 0 0.00000 0 21 17.00000 0.00000 100% - 0s 0 0 0.00000 0 22 17.00000 0.00000 100% - 0s 0 0 0.00000 0 19 17.00000 0.00000 100% - 0s 0 0 0.00000 0 17 17.00000 0.00000 100% - 0s 0 0 0.00000 0 18 17.00000 0.00000 100% - 0s 0 0 0.00000 0 18 17.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 2 0.00000 0 18 15.00000 0.00000 100% - 0s H 81 62 12.0000000 0.00000 100% 1.9 0s H 324 205 11.0000000 0.00000 100% 7.2 0s H 405 244 10.0000000 0.00000 100% 7.6 0s H 486 240 8.0000000 0.00000 100% 7.8 0s H 532 227 7.0000000 1.00000 85.7% 9.6 0s * 548 189 13 6.0000000 1.00000 83.3% 11.0 0s Cutting planes: Cover: 276 MIR: 3 Zero half: 2 Explored 771 nodes (19820 simplex iterations) in 0.40 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%