Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:27:12 2012 Optimize a model with 1 rows, 152 columns and 152 nonzeros Model has 124 quadratic objective terms Presolve removed 0 rows and 22 columns Presolve time: 0.00s Presolved: 125 rows, 254 columns, 502 nonzeros Variable types: 0 continuous, 254 integer (253 binary) Found heuristic solution: objective 31.0000000 Root relaxation: objective 0.000000e+00, 156 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 34 31.00000 0.00000 100% - 0s H 0 0 25.0000000 0.00000 100% - 0s 0 0 0.00000 0 25 25.00000 0.00000 100% - 0s 0 0 0.00000 0 25 25.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.00000 0 10 16.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 15 9.00000 0.00000 100% - 0s 0 0 0.00000 0 18 9.00000 0.00000 100% - 0s 0 0 0.00000 0 17 9.00000 0.00000 100% - 0s 0 0 0.00000 0 13 9.00000 0.00000 100% - 0s 0 0 0.00000 0 11 9.00000 0.00000 100% - 0s 0 0 0.00000 0 12 9.00000 0.00000 100% - 0s 0 0 0.00000 0 12 9.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 2 0.00000 0 12 8.00000 0.00000 100% - 0s H 21 21 7.0000000 0.00000 100% 2.7 0s H 54 28 5.0000000 0.00000 100% 3.4 0s H 374 156 4.0000000 0.00000 100% 5.9 0s H 405 99 3.0000000 0.00000 100% 6.8 0s * 458 38 12 2.0000000 0.57143 71.4% 8.8 0s Cutting planes: Cover: 210 MIR: 1 Explored 497 nodes (6202 simplex iterations) in 0.15 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%