Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:06 2012 Optimize a model with 1 rows, 48 columns and 48 nonzeros Model has 67 quadratic objective terms Presolve time: 0.00s Presolved: 68 rows, 115 columns, 249 nonzeros Variable types: 0 continuous, 115 integer (115 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 0.000000e+00, 88 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 17 32.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.00000 0 20 17.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 15.00000 0.00000 100% - 0s 0 0 0.00000 0 19 15.00000 0.00000 100% - 0s 0 0 0.00000 0 19 15.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 2 0.00000 0 17 14.00000 0.00000 100% - 0s H 27 27 13.0000000 0.00000 100% 2.2 0s H 151 111 12.0000000 0.00000 100% 6.4 0s H 212 117 10.0000000 0.00000 100% 7.8 0s H 246 106 9.0000000 0.00000 100% 8.2 0s Cutting planes: Cover: 130 Explored 405 nodes (7564 simplex iterations) in 0.11 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%