Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:50 2012 Optimize a model with 1 rows, 52 columns and 52 nonzeros Model has 79 quadratic objective terms Presolve time: 0.00s Presolved: 80 rows, 131 columns, 289 nonzeros Variable types: 0 continuous, 131 integer (131 binary) Found heuristic solution: objective 33.0000000 Root relaxation: objective 0.000000e+00, 111 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 31 33.00000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s 0 0 0.00000 0 26 26.00000 0.00000 100% - 0s H 0 0 25.0000000 0.00000 100% - 0s 0 0 0.00000 0 22 25.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s 0 0 0.00000 0 30 18.00000 0.00000 100% - 0s 0 0 0.00000 0 19 18.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 2 0.00000 0 17 15.00000 0.00000 100% - 0s H 177 126 14.0000000 0.00000 100% 4.8 0s * 217 129 11 12.0000000 0.00000 100% 5.8 0s * 229 115 13 11.0000000 0.00000 100% 5.8 0s * 247 105 15 10.0000000 0.00000 100% 6.5 0s * 392 49 5 9.0000000 5.00000 44.4% 17.9 0s Cutting planes: Gomory: 2 Cover: 150 Explored 444 nodes (8744 simplex iterations) in 0.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%