Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:28:36 2012 Optimize a model with 1 rows, 156 columns and 156 nonzeros Model has 123 quadratic objective terms Presolve removed 0 rows and 28 columns Presolve time: 0.00s Presolved: 124 rows, 251 columns, 497 nonzeros Variable types: 0 continuous, 251 integer (250 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 0.000000e+00, 166 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 23 30.00000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 21.00000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 0 0.00000 0 21 19.00000 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 12 10.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 15 8.00000 0.00000 100% - 0s 0 0 0.00000 0 11 8.00000 0.00000 100% - 0s 0 0 0.00000 0 9 8.00000 0.00000 100% - 0s 0 0 0.00000 0 8 8.00000 0.00000 100% - 0s 0 0 0.00000 0 9 8.00000 0.00000 100% - 0s 0 0 0.00000 0 9 8.00000 0.00000 100% - 0s 0 0 0.00000 0 9 8.00000 0.00000 100% - 0s 0 0 0.00000 0 9 8.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 2 0.00000 0 9 6.00000 0.00000 100% - 0s * 103 54 16 5.0000000 0.00000 100% 2.3 0s * 149 60 14 4.0000000 0.00000 100% 2.8 0s * 154 26 6 2.0000000 0.00000 100% 3.0 0s * 157 12 7 1.0000000 0.00000 100% 3.0 0s Cutting planes: Cover: 78 Explored 158 nodes (994 simplex iterations) in 0.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+00, best bound 1.000000000000e+00, gap 0.0%