Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:40:03 2012 Optimize a model with 1 rows, 39 columns and 39 nonzeros Model has 79 quadratic objective terms Presolve time: 0.00s Presolved: 80 rows, 118 columns, 276 nonzeros Variable types: 0 continuous, 118 integer (118 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 0.000000e+00, 94 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 32.00000 0.00000 100% - 0s 0 0 0.00000 0 42 32.00000 0.00000 100% - 0s H 0 0 29.0000000 0.00000 100% - 0s H 0 0 28.0000000 0.00000 100% - 0s 0 0 0.00000 0 30 28.00000 0.00000 100% - 0s 0 0 0.00000 0 28 28.00000 0.00000 100% - 0s 0 0 0.00000 0 25 28.00000 0.00000 100% - 0s H 0 0 25.0000000 0.00000 100% - 0s 0 0 0.00000 0 26 25.00000 0.00000 100% - 0s 0 0 0.00000 0 26 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 2 0.00000 0 26 21.00000 0.00000 100% - 0s H 19 19 20.0000000 0.00000 100% 5.3 0s H 122 82 19.0000000 1.00000 94.7% 7.9 0s H 130 83 17.0000000 1.00000 94.1% 8.1 0s H 148 80 16.0000000 2.00000 87.5% 9.9 0s H 149 77 15.0000000 2.00000 86.7% 9.9 0s Cutting planes: Cover: 148 MIR: 8 Explored 321 nodes (5759 simplex iterations) in 0.10 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%