Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:18 2012 Optimize a model with 34 rows, 93 columns and 93 nonzeros Model has 66 quadratic constraints Presolve time: 0.39s Presolved: 34 rows, 93 columns, 93 nonzeros Variable types: 66 continuous, 27 integer (27 binary) Root relaxation: objective 0.000000e+00, 13 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 17.0000000 - - - 0s 0 0 0.00000 0 14 17.00000 0.00000 100% - 0s 0 0 0.00000 0 19 17.00000 0.00000 100% - 0s 0 0 0.00000 0 15 17.00000 0.00000 100% - 0s 0 2 0.00000 0 14 17.00000 0.00000 100% - 0s * 10 10 8 5.0000000 2.50000 50.0% 13.5 0s * 12 9 10 4.0000000 2.50000 37.5% 11.5 0s Cutting planes: Explored 33 nodes (459 simplex iterations) in 0.40 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%