Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:28:55 2012 Optimize a model with 1 rows, 157 columns and 157 nonzeros Model has 125 quadratic objective terms Presolve removed 0 rows and 26 columns Presolve time: 0.00s Presolved: 126 rows, 256 columns, 506 nonzeros Variable types: 0 continuous, 256 integer (255 binary) Found heuristic solution: objective 28.0000000 Root relaxation: objective 0.000000e+00, 160 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 26 28.00000 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 0 0 0.00000 0 18 19.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 30 12.00000 0.00000 100% - 0s 0 0 0.00000 0 17 12.00000 0.00000 100% - 0s 0 0 0.00000 0 11 12.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 16 10.00000 0.00000 100% - 0s 0 0 0.00000 0 16 10.00000 0.00000 100% - 0s 0 0 0.00000 0 16 10.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 2 0.00000 0 14 8.00000 0.00000 100% - 0s H 108 64 7.0000000 0.00000 100% 1.8 0s H 200 87 5.0000000 0.00000 100% 3.0 0s H 216 78 4.0000000 0.00000 100% 3.2 0s * 470 96 11 3.0000000 0.00000 100% 7.9 0s Cutting planes: Cover: 212 MIR: 1 Zero half: 1 Explored 574 nodes (8099 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%