Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:24:54 2012 Optimize a model with 1 rows, 144 columns and 144 nonzeros Model has 112 quadratic objective terms Presolve removed 0 rows and 28 columns Presolve time: 0.00s Presolved: 113 rows, 228 columns, 452 nonzeros Variable types: 0 continuous, 228 integer (227 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 0.000000e+00, 149 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 36 32.00000 0.00000 100% - 0s 0 0 0.00000 0 26 32.00000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s 0 0 0.00000 0 17 27.00000 0.00000 100% - 0s H 0 0 16.0000000 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 16 11.00000 0.00000 100% - 0s 0 0 0.00000 0 31 11.00000 0.00000 100% - 0s 0 0 0.00000 0 18 11.00000 0.00000 100% - 0s 0 0 0.00000 0 19 11.00000 0.00000 100% - 0s 0 0 0.00000 0 13 11.00000 0.00000 100% - 0s 0 0 0.00000 0 13 11.00000 0.00000 100% - 0s 0 0 0.00000 0 13 11.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 2 0.00000 0 13 9.00000 0.00000 100% - 0s H 18 18 8.0000000 0.00000 100% 1.1 0s H 27 23 7.0000000 0.00000 100% 1.2 0s * 50 32 18 6.0000000 0.00000 100% 1.3 0s H 78 44 5.0000000 0.00000 100% 2.7 0s H 109 57 4.0000000 0.00000 100% 3.1 0s * 131 46 22 3.0000000 0.00000 100% 2.8 0s * 185 27 41 2.0000000 0.00000 100% 3.0 0s * 208 6 22 1.0000000 0.00000 100% 3.1 0s Cutting planes: Cover: 89 Explored 209 nodes (1148 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%