Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:43 2012 Optimize a model with 56 rows, 155 columns and 155 nonzeros Model has 110 quadratic constraints Presolve removed 0 rows and 2 columns Presolve time: 0.64s Presolved: 56 rows, 153 columns, 153 nonzeros Variable types: 110 continuous, 43 integer (42 binary) Root relaxation: objective 0.000000e+00, 22 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 20.0000000 - - - 0s 0 0 0.00000 0 10 20.00000 0.00000 100% - 0s 0 0 0.00000 0 14 20.00000 0.00000 100% - 0s 0 0 0.00000 0 33 20.00000 0.00000 100% - 0s 0 2 0.00000 0 33 20.00000 0.00000 100% - 0s * 12 12 7 6.0000000 1.81444 69.8% 27.5 0s * 34 7 4 5.0000000 1.93103 61.4% 15.4 0s Cutting planes: Explored 49 nodes (1144 simplex iterations) in 0.67 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%