Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:37:18 2012 Optimize a model with 1 rows, 169 columns and 169 nonzeros Model has 164 quadratic objective terms Presolve removed 0 rows and 25 columns Presolve time: 0.00s Presolved: 165 rows, 308 columns, 636 nonzeros Variable types: 0 continuous, 308 integer (307 binary) Found heuristic solution: objective 48.0000000 Root relaxation: objective 0.000000e+00, 196 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 42 48.00000 0.00000 100% - 0s H 0 0 35.0000000 0.00000 100% - 0s 0 0 0.00000 0 36 35.00000 0.00000 100% - 0s H 0 0 32.0000000 0.00000 100% - 0s 0 0 0.00000 0 33 32.00000 0.00000 100% - 0s H 0 0 25.0000000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s 0 0 0.00000 0 19 22.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.00000 0 24 16.00000 0.00000 100% - 0s 0 0 0.00000 0 20 16.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 17 10.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 12 9.00000 0.00000 100% - 0s 0 0 0.00000 0 25 9.00000 0.00000 100% - 0s 0 0 0.00000 0 23 9.00000 0.00000 100% - 0s 0 0 0.00000 0 18 9.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 15 8.00000 0.00000 100% - 0s 0 0 0.00000 0 13 8.00000 0.00000 100% - 0s 0 0 0.00000 0 20 8.00000 0.00000 100% - 0s 0 0 0.00000 0 20 8.00000 0.00000 100% - 0s 0 2 0.00000 0 20 8.00000 0.00000 100% - 0s * 459 165 8 7.0000000 1.00000 85.7% 14.3 0s Cutting planes: Cover: 313 Explored 678 nodes (22086 simplex iterations) in 0.46 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%