Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:42:34 2012 Optimize a model with 90 rows, 221 columns and 221 nonzeros Model has 178 quadratic constraints Presolve time: 1.04s Presolved: 90 rows, 221 columns, 221 nonzeros Variable types: 178 continuous, 43 integer (43 binary) Root relaxation: objective 0.000000e+00, 21 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 49.0000000 - - - 1s 0 0 0.00000 0 2 49.00000 0.00000 100% - 1s 0 0 0.00000 0 4 49.00000 0.00000 100% - 1s 0 0 0.00000 0 23 49.00000 0.00000 100% - 1s 0 2 0.00000 0 23 49.00000 0.00000 100% - 1s * 26 26 17 22.0000000 3.52174 84.0% 24.2 1s * 29 25 20 21.0000000 3.52174 83.2% 22.0 1s * 50 36 16 20.0000000 5.71875 71.4% 17.0 1s * 65 40 10 19.0000000 6.27000 67.0% 18.1 1s * 104 56 11 18.0000000 7.05405 60.8% 20.8 1s * 164 57 14 17.0000000 7.90909 53.5% 17.3 1s Cutting planes: Explored 352 nodes (6637 simplex iterations) in 1.20 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%