Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:37 2012 Optimize a model with 1 rows, 51 columns and 51 nonzeros Model has 70 quadratic objective terms Presolve time: 0.00s Presolved: 71 rows, 121 columns, 261 nonzeros Variable types: 0 continuous, 121 integer (121 binary) Found heuristic solution: objective 24.0000000 Root relaxation: objective 0.000000e+00, 92 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 16 24.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.00000 0 17 16.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 15.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 15 14.00000 0.00000 100% - 0s 0 0 0.00000 0 15 14.00000 0.00000 100% - 0s 0 2 0.00000 0 15 14.00000 0.00000 100% - 0s H 111 69 11.0000000 0.00000 100% 4.4 0s H 139 76 10.0000000 0.00000 100% 4.9 0s * 282 94 11 9.0000000 1.00000 88.9% 7.2 0s * 285 73 6 8.0000000 1.12500 85.9% 7.6 0s Cutting planes: Cover: 135 Explored 367 nodes (4840 simplex iterations) in 0.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%