Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:43:44 2012 Optimize a model with 1 rows, 176 columns and 176 nonzeros Model has 157 quadratic objective terms Presolve removed 0 rows and 25 columns Presolve time: 0.00s Presolved: 158 rows, 308 columns, 622 nonzeros Variable types: 0 continuous, 308 integer (307 binary) Found heuristic solution: objective 35.0000000 Root relaxation: objective 0.000000e+00, 198 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 43 35.00000 0.00000 100% - 0s 0 0 0.00000 0 22 35.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 0 0.00000 0 19 19.00000 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 39 15.00000 0.00000 100% - 0s 0 0 0.00000 0 18 15.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 2 0.00000 0 18 11.00000 0.00000 100% - 0s H 162 106 10.0000000 0.00000 100% 4.2 0s H 270 136 7.0000000 0.00000 100% 6.7 0s * 397 158 12 6.0000000 0.00000 100% 8.6 0s * 430 111 20 5.0000000 0.00000 100% 9.4 0s Cutting planes: Gomory: 2 Cover: 269 Explored 637 nodes (17423 simplex iterations) in 0.33 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%