Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:50 2012 Optimize a model with 1 rows, 38 columns and 38 nonzeros Model has 77 quadratic objective terms Presolve time: 0.00s Presolved: 78 rows, 115 columns, 269 nonzeros Variable types: 0 continuous, 115 integer (115 binary) Found heuristic solution: objective 24.0000000 Root relaxation: objective 0.000000e+00, 97 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 25 24.00000 0.00000 100% - 0s 0 0 0.00000 0 40 24.00000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s 0 0 0.00000 0 25 21.00000 0.00000 100% - 0s 0 0 0.00000 0 25 21.00000 0.00000 100% - 0s 0 0 0.00000 0 25 21.00000 0.00000 100% - 0s 0 2 0.00000 0 25 21.00000 0.00000 100% - 0s H 119 91 20.0000000 0.00000 100% 5.3 0s H 122 89 19.0000000 0.00000 100% 5.3 0s H 218 99 18.0000000 2.00000 88.9% 9.5 0s H 245 98 17.0000000 3.00000 82.4% 10.1 0s * 290 64 8 15.0000000 7.00000 53.3% 13.0 0s Cutting planes: Gomory: 2 Cover: 144 MIR: 2 Zero half: 3 Explored 396 nodes (5922 simplex iterations) in 0.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%