Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:09 2012 Optimize a model with 64 rows, 160 columns and 160 nonzeros Model has 126 quadratic constraints Presolve time: 0.74s Presolved: 64 rows, 160 columns, 160 nonzeros Variable types: 126 continuous, 34 integer (34 binary) Root relaxation: objective 0.000000e+00, 17 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 32.0000000 - - - 0s 0 0 0.00000 0 15 32.00000 0.00000 100% - 0s 0 0 0.00000 0 21 32.00000 0.00000 100% - 0s 0 0 0.00000 0 21 32.00000 0.00000 100% - 0s 0 2 0.00000 0 21 32.00000 0.00000 100% - 0s * 21 21 15 20.0000000 3.73913 81.3% 20.5 0s * 22 20 16 19.0000000 3.73913 80.3% 19.7 0s * 38 25 13 13.0000000 4.00000 69.2% 16.8 0s Cutting planes: Gomory: 2 Explored 165 nodes (2189 simplex iterations) in 0.80 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%