Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:08 2012 Optimize a model with 54 rows, 154 columns and 154 nonzeros Model has 106 quadratic constraints Presolve removed 0 rows and 7 columns Presolve time: 0.62s Presolved: 54 rows, 147 columns, 147 nonzeros Variable types: 106 continuous, 41 integer (40 binary) Root relaxation: objective 0.000000e+00, 23 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 28.0000000 - - - 0s 0 0 0.00000 0 8 28.00000 0.00000 100% - 0s 0 0 0.00000 0 35 28.00000 0.00000 100% - 0s 0 0 0.00000 0 35 28.00000 0.00000 100% - 0s 0 2 0.00000 0 34 28.00000 0.00000 100% - 0s * 19 19 11 8.0000000 0.99081 87.6% 21.0 0s * 33 17 8 6.0000000 1.16071 80.7% 17.2 0s Cutting planes: Explored 117 nodes (1954 simplex iterations) in 0.68 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%