Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:37:43 2012 Optimize a model with 19 rows, 54 columns and 54 nonzeros Model has 36 quadratic constraints Presolve time: 0.21s Presolved: 19 rows, 54 columns, 54 nonzeros Variable types: 36 continuous, 18 integer (18 binary) Root relaxation: objective 0.000000e+00, 9 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 13.0000000 - - - 0s 0 0 0.00000 0 7 13.00000 0.00000 100% - 0s 0 0 0.00000 0 13 13.00000 0.00000 100% - 0s 0 0 0.00000 0 12 13.00000 0.00000 100% - 0s 0 2 0.25000 0 12 13.00000 0.25000 98.1% - 0s * 7 7 4 3.0000000 1.75000 41.7% 9.1 0s * 13 1 3 2.0000000 2.00000 0.0% 5.5 0s Cutting planes: Gomory: 2 Explored 14 nodes (211 simplex iterations) in 0.23 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%