Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:28:16 2012 Optimize a model with 1 rows, 155 columns and 155 nonzeros Model has 135 quadratic objective terms Presolve removed 0 rows and 25 columns Presolve time: 0.00s Presolved: 136 rows, 265 columns, 535 nonzeros Variable types: 0 continuous, 265 integer (264 binary) Found heuristic solution: objective 27.0000000 Root relaxation: objective 0.000000e+00, 158 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 27 27.00000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s 0 0 0.00000 0 26 24.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s 0 0 0.00000 0 28 20.00000 0.00000 100% - 0s 0 0 0.00000 0 19 20.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 25 14.00000 0.00000 100% - 0s 0 0 0.00000 0 15 14.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 2 0.00000 0 15 10.00000 0.00000 100% - 0s * 274 162 41 9.0000000 0.00000 100% 3.3 0s H 326 166 7.0000000 0.00000 100% 3.7 0s H 459 203 6.0000000 0.00000 100% 5.0 0s * 460 135 21 4.0000000 0.00000 100% 5.1 0s H 528 65 3.0000000 0.00000 100% 10.1 0s Cutting planes: Cover: 244 Explored 594 nodes (9874 simplex iterations) in 0.18 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%