Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:13:36 2012 Optimize a model with 77 rows, 211 columns and 211 nonzeros Model has 152 quadratic constraints Presolve removed 0 rows and 3 columns Presolve time: 0.89s Presolved: 77 rows, 208 columns, 208 nonzeros Variable types: 152 continuous, 56 integer (55 binary) Root relaxation: objective 0.000000e+00, 29 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 41.0000000 - - - 0s 0 0 0.00000 0 15 41.00000 0.00000 100% - 0s 0 0 0.00000 0 30 41.00000 0.00000 100% - 0s 0 0 0.00000 0 30 41.00000 0.00000 100% - 0s 0 2 0.00000 0 30 41.00000 0.00000 100% - 0s * 18 18 15 9.0000000 2.64000 70.7% 27.8 0s H 47 21 8.0000000 3.31519 58.6% 20.4 0s Cutting planes: Gomory: 1 Explored 171 nodes (2833 simplex iterations) in 0.96 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.999999999825e+00, best bound 7.999999999825e+00, gap 0.0%