Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:44:45 2012 Optimize a model with 1 rows, 45 columns and 45 nonzeros Model has 84 quadratic objective terms Presolve time: 0.00s Presolved: 85 rows, 129 columns, 297 nonzeros Variable types: 0 continuous, 129 integer (129 binary) Found heuristic solution: objective 40.0000000 Found heuristic solution: objective 33.0000000 Root relaxation: objective 0.000000e+00, 110 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 33.00000 0.00000 100% - 0s H 0 0 32.0000000 0.00000 100% - 0s 0 0 0.00000 0 38 32.00000 0.00000 100% - 0s H 0 0 27.0000000 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 22.0000000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s 0 0 0.00000 0 29 21.00000 0.00000 100% - 0s 0 0 0.00000 0 26 21.00000 0.00000 100% - 0s 0 0 0.00000 0 22 21.00000 0.00000 100% - 0s 0 0 0.00000 0 28 21.00000 0.00000 100% - 0s 0 0 0.00000 0 28 21.00000 0.00000 100% - 0s 0 2 0.00000 0 28 21.00000 0.00000 100% - 0s H 54 47 20.0000000 0.00000 100% 2.9 0s H 138 115 19.0000000 0.00000 100% 5.1 0s * 213 132 14 18.0000000 1.00000 94.4% 7.3 0s * 460 132 17 17.0000000 2.00000 88.2% 13.7 0s * 596 101 13 16.0000000 7.00000 56.2% 17.8 0s Cutting planes: Gomory: 8 Cover: 161 MIR: 4 Zero half: 1 Explored 809 nodes (14692 simplex iterations) in 0.29 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.600000000000e+01, best bound 1.600000000000e+01, gap 0.0%