Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:35:09 2012 Optimize a model with 1 rows, 164 columns and 164 nonzeros Model has 136 quadratic objective terms Presolve removed 0 rows and 32 columns Presolve time: 0.00s Presolved: 137 rows, 268 columns, 540 nonzeros Variable types: 0 continuous, 268 integer (267 binary) Found heuristic solution: objective 39.0000000 Root relaxation: objective 0.000000e+00, 161 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 38 39.00000 0.00000 100% - 0s H 0 0 35.0000000 0.00000 100% - 0s 0 0 0.00000 0 27 35.00000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 0 0.00000 0 28 19.00000 0.00000 100% - 0s 0 0 0.00000 0 19 19.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 0 0.00000 0 17 15.00000 0.00000 100% - 0s 0 0 0.00000 0 16 15.00000 0.00000 100% - 0s 0 0 0.00000 0 12 15.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 0 0.00000 0 8 7.00000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s 0 0 0.00000 0 7 5.00000 0.00000 100% - 0s 0 0 0.00000 0 5 5.00000 0.00000 100% - 0s 0 0 0.00000 0 6 5.00000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s 0 0 0.00000 0 7 4.00000 0.00000 100% - 0s H 0 0 3.0000000 0.00000 100% - 0s 0 0 0.00000 0 8 3.00000 0.00000 100% - 0s 0 0 0.00000 0 8 3.00000 0.00000 100% - 0s 0 0 0.00000 0 8 3.00000 0.00000 100% - 0s 0 2 0.00000 0 8 3.00000 0.00000 100% - 0s * 5360 522 40 2.0000000 1.00000 50.0% 2.1 0s Cutting planes: Gomory: 4 Cover: 4 Explored 13071 nodes (23635 simplex iterations) in 0.98 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%