Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:18:50 2012 Optimize a model with 219 rows, 648 columns and 648 nonzeros Model has 436 quadratic constraints Presolve removed 0 rows and 29 columns Presolve time: 2.54s Presolved: 219 rows, 619 columns, 619 nonzeros Variable types: 436 continuous, 183 integer (182 binary) Root relaxation: objective 0.000000e+00, 77 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 109.0000000 - - - 2s 0 0 0.00000 0 121 109.00000 0.00000 100% - 2s 0 0 0.00000 0 164 109.00000 0.00000 100% - 2s 0 0 0.00000 0 163 109.00000 0.00000 100% - 2s H 0 0 104.0000000 0.00000 100% - 2s 0 2 0.00000 0 162 104.00000 0.00000 100% - 2s H 24 23 8.0000000 1.57143 80.4% 45.5 2s Cutting planes: Gomory: 2 Explored 146 nodes (7296 simplex iterations) in 2.79 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%