Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:41:53 2012 Optimize a model with 88 rows, 216 columns and 216 nonzeros Model has 174 quadratic constraints Presolve time: 1.02s Presolved: 88 rows, 216 columns, 216 nonzeros Variable types: 174 continuous, 42 integer (42 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 48.0000000 - - - 1s 0 0 0.00000 0 36 48.00000 0.00000 100% - 1s 0 0 0.31430 0 39 48.00000 0.31430 99.3% - 1s 0 2 0.34862 0 39 48.00000 0.34862 99.3% - 1s * 22 22 13 24.0000000 3.30175 86.2% 28.4 1s * 46 32 13 22.0000000 4.34858 80.2% 23.7 1s * 70 42 14 20.0000000 4.56975 77.2% 21.4 1s * 106 60 17 19.0000000 6.92000 63.6% 22.3 1s * 230 39 8 17.0000000 11.56310 32.0% 19.8 1s Cutting planes: Gomory: 1 Explored 303 nodes (6421 simplex iterations) in 1.18 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%