Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:20:57 2012 Optimize a model with 1 rows, 126 columns and 126 nonzeros Model has 90 quadratic objective terms Presolve removed 0 rows and 27 columns Presolve time: 0.00s Presolved: 91 rows, 189 columns, 369 nonzeros Variable types: 0 continuous, 189 integer (188 binary) Found heuristic solution: objective 23.0000000 Root relaxation: objective 0.000000e+00, 114 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 17 23.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 17.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 0 0.00000 0 10 11.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 7 8.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.00000 0 6 6.00000 0.00000 100% - 0s 0 0 0.00000 0 5 6.00000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s 0 0 0.00000 0 51 5.00000 0.00000 100% - 0s 0 0 0.00000 0 13 5.00000 0.00000 100% - 0s 0 2 0.00000 0 13 5.00000 0.00000 100% - 0s H 142 49 3.0000000 0.00000 100% 5.3 0s H 158 31 2.0000000 0.00000 100% 5.6 0s H 160 15 1.0000000 0.00000 100% 5.6 0s Cutting planes: Cover: 90 Explored 161 nodes (1141 simplex iterations) in 0.04 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%