Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:25:26 2012 Optimize a model with 1 rows, 146 columns and 146 nonzeros Model has 108 quadratic objective terms Presolve removed 0 rows and 31 columns Presolve time: 0.00s Presolved: 109 rows, 223 columns, 439 nonzeros Variable types: 0 continuous, 223 integer (222 binary) Found heuristic solution: objective 31.0000000 Root relaxation: objective 0.000000e+00, 133 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 25 31.00000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s 0 0 0.00000 0 17 23.00000 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 19 14.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 0 0.00000 0 4 7.00000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s 0 0 0.00000 0 6 4.00000 0.00000 100% - 0s 0 0 0.00000 0 6 4.00000 0.00000 100% - 0s 0 0 0.00000 0 6 4.00000 0.00000 100% - 0s H 0 0 3.0000000 0.00000 100% - 0s 0 2 0.00000 0 6 3.00000 0.00000 100% - 0s * 69 16 25 2.0000000 0.00000 100% 2.2 0s H 219 9 1.0000000 0.00000 100% 2.9 0s Cutting planes: Cover: 78 Explored 220 nodes (928 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%