Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:57:10 2012 Optimize a model with 175 rows, 539 columns and 539 nonzeros Model has 348 quadratic constraints Presolve removed 0 rows and 26 columns Presolve time: 2.03s Presolved: 175 rows, 513 columns, 513 nonzeros Variable types: 348 continuous, 165 integer (164 binary) Root relaxation: objective 0.000000e+00, 63 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 88.0000000 - - - 2s 0 0 0.00000 0 3 88.00000 0.00000 100% - 2s 0 0 0.00000 0 4 88.00000 0.00000 100% - 2s 0 0 0.00000 0 73 88.00000 0.00000 100% - 2s 0 2 0.00000 0 59 88.00000 0.00000 100% - 2s H 45 43 7.0000000 1.04545 85.1% 33.4 2s * 91 52 24 6.0000000 1.12500 81.2% 23.4 2s * 184 36 12 4.0000000 1.51376 62.2% 16.9 2s Cutting planes: Explored 403 nodes (6071 simplex iterations) in 2.28 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%