Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:53:43 2012 Optimize a model with 89 rows, 196 columns and 196 nonzeros Model has 176 quadratic constraints Presolve time: 1.02s Presolved: 89 rows, 196 columns, 196 nonzeros Variable types: 176 continuous, 20 integer (20 binary) Root relaxation: objective 0.000000e+00, 10 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 16 48.00000 0.00000 100% - 1s 0 0 0.50000 0 20 48.00000 0.50000 99.0% - 1s 0 0 0.50000 0 20 48.00000 0.50000 99.0% - 1s 0 2 0.50000 0 20 48.00000 0.50000 99.0% - 1s * 20 20 10 32.0000000 4.60714 85.6% 31.5 1s Cutting planes: Gomory: 1 Explored 938 nodes (14256 simplex iterations) in 1.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.200000000000e+01, best bound 3.200000000000e+01, gap 0.0%