Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:12:56 2012 Optimize a model with 1 rows, 57 columns and 57 nonzeros Model has 95 quadratic objective terms Presolve time: 0.00s Presolved: 96 rows, 152 columns, 342 nonzeros Variable types: 0 continuous, 152 integer (152 binary) Found heuristic solution: objective 40.0000000 Root relaxation: objective 0.000000e+00, 129 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 37 40.00000 0.00000 100% - 0s H 0 0 37.0000000 0.00000 100% - 0s 0 0 0.00000 0 54 37.00000 0.00000 100% - 0s H 0 0 30.0000000 0.00000 100% - 0s H 0 0 29.0000000 0.00000 100% - 0s 0 0 0.00000 0 21 29.00000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 0 0.00000 0 24 19.00000 0.00000 100% - 0s 0 0 0.00000 0 33 19.00000 0.00000 100% - 0s 0 0 0.00000 0 33 19.00000 0.00000 100% - 0s 0 2 0.00000 0 33 19.00000 0.00000 100% - 0s H 70 53 18.0000000 0.00000 100% 3.3 0s H 213 150 17.0000000 0.00000 100% 8.3 0s H 218 142 16.0000000 0.00000 100% 8.2 0s H 233 128 14.0000000 0.00000 100% 8.5 0s * 450 115 10 13.0000000 2.66667 79.5% 14.3 0s Cutting planes: Gomory: 4 Cover: 181 MIR: 8 Zero half: 5 Explored 646 nodes (13122 simplex iterations) in 0.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%