Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:27:07 2012 Optimize a model with 141 rows, 431 columns and 431 nonzeros Model has 280 quadratic constraints Presolve removed 0 rows and 22 columns Presolve time: 1.63s Presolved: 141 rows, 409 columns, 409 nonzeros Variable types: 280 continuous, 129 integer (128 binary) Root relaxation: objective 0.000000e+00, 51 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 2 66.00000 0.00000 100% - 1s 0 0 0.00000 0 65 66.00000 0.00000 100% - 1s 0 0 0.00000 0 34 66.00000 0.00000 100% - 1s 0 2 0.00000 0 91 66.00000 0.00000 100% - 1s * 9 7 5 4.0000000 1.54955 61.3% 100 1s Cutting planes: Explored 35 nodes (2255 simplex iterations) in 1.72 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%