Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:36:20 2012 Optimize a model with 146 rows, 456 columns and 456 nonzeros Model has 290 quadratic constraints Presolve removed 0 rows and 29 columns Presolve time: 1.69s Presolved: 146 rows, 427 columns, 427 nonzeros Variable types: 290 continuous, 137 integer (136 binary) Root relaxation: objective 0.000000e+00, 53 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 66.0000000 - - - 1s 0 0 0.00000 0 48 66.00000 0.00000 100% - 1s 0 0 0.00000 0 60 66.00000 0.00000 100% - 1s 0 0 0.00000 0 80 66.00000 0.00000 100% - 1s 0 2 0.00000 0 79 66.00000 0.00000 100% - 1s * 7 7 4 5.0000000 0.81481 83.7% 92.1 1s * 12 8 8 4.0000000 0.81481 79.6% 60.8 1s * 41 8 4 3.0000000 1.81684 39.4% 25.7 1s Cutting planes: Explored 50 nodes (2384 simplex iterations) in 1.80 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%