Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:46 2012 Optimize a model with 62 rows, 167 columns and 167 nonzeros Model has 122 quadratic constraints Presolve removed 0 rows and 3 columns Presolve time: 0.71s Presolved: 62 rows, 164 columns, 164 nonzeros Variable types: 122 continuous, 42 integer (41 binary) Root relaxation: objective 0.000000e+00, 19 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 29.0000000 - - - 0s 0 0 0.00000 0 6 29.00000 0.00000 100% - 0s 0 0 0.00000 0 24 29.00000 0.00000 100% - 0s 0 0 0.00000 0 17 29.00000 0.00000 100% - 0s 0 2 0.00000 0 17 29.00000 0.00000 100% - 0s * 14 14 9 8.0000000 2.93561 63.3% 30.0 0s * 32 16 9 7.0000000 3.91304 44.1% 17.0 0s Cutting planes: Explored 97 nodes (1457 simplex iterations) in 0.75 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%