Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:34:46 2012 Optimize a model with 1 rows, 163 columns and 163 nonzeros Model has 141 quadratic objective terms Presolve removed 0 rows and 24 columns Presolve time: 0.00s Presolved: 142 rows, 280 columns, 562 nonzeros Variable types: 0 continuous, 280 integer (279 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 0.000000e+00, 177 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 28 32.00000 0.00000 100% - 0s H 0 0 28.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 28.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 0 0.00000 0 16 15.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 0 0.00000 0 12 11.00000 0.00000 100% - 0s 0 0 0.00000 0 19 11.00000 0.00000 100% - 0s 0 0 0.00000 0 9 11.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 11 8.00000 0.00000 100% - 0s 0 0 0.00000 0 10 8.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.00000 0 7 6.00000 0.00000 100% - 0s 0 0 0.00000 0 10 6.00000 0.00000 100% - 0s 0 0 0.00000 0 10 6.00000 0.00000 100% - 0s 0 2 0.00000 0 10 6.00000 0.00000 100% - 0s * 26 24 17 5.0000000 0.00000 100% 1.9 0s H 329 72 4.0000000 0.00000 100% 4.8 0s * 457 58 8 3.0000000 1.00000 66.7% 12.6 0s Cutting planes: Cover: 249 Explored 518 nodes (9560 simplex iterations) in 0.19 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%