Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:40:42 2012 Optimize a model with 1 rows, 41 columns and 41 nonzeros Model has 82 quadratic objective terms Presolve time: 0.00s Presolved: 83 rows, 123 columns, 287 nonzeros Variable types: 0 continuous, 123 integer (123 binary) Found heuristic solution: objective 38.0000000 Found heuristic solution: objective 37.0000000 Root relaxation: objective 0.000000e+00, 102 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 34 37.00000 0.00000 100% - 0s H 0 0 34.0000000 0.00000 100% - 0s 0 0 0.00000 0 47 34.00000 0.00000 100% - 0s H 0 0 29.0000000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s 0 0 0.00000 0 32 26.00000 0.00000 100% - 0s 0 0 0.00000 0 25 26.00000 0.00000 100% - 0s H 0 0 25.0000000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s 0 0 0.00000 0 27 24.00000 0.00000 100% - 0s 0 0 0.00000 0 27 24.00000 0.00000 100% - 0s 0 2 0.00000 0 27 24.00000 0.00000 100% - 0s H 125 100 23.0000000 0.00000 100% 8.0 0s H 133 102 22.0000000 0.00000 100% 7.7 0s H 148 103 21.0000000 0.00000 100% 7.9 0s H 401 148 20.0000000 5.00000 75.0% 11.6 0s H 429 126 19.0000000 6.00000 68.4% 12.0 0s H 496 105 18.0000000 8.00000 55.6% 14.1 0s Cutting planes: Cover: 157 MIR: 7 Zero half: 2 Explored 758 nodes (11371 simplex iterations) in 0.22 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%