Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:52:41 2012 Optimize a model with 163 rows, 507 columns and 507 nonzeros Model has 324 quadratic constraints Presolve removed 0 rows and 25 columns Presolve time: 1.89s Presolved: 163 rows, 482 columns, 482 nonzeros Variable types: 324 continuous, 158 integer (157 binary) Root relaxation: objective 0.000000e+00, 59 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 85.0000000 - - - 1s 0 0 0.00000 0 55 85.00000 0.00000 100% - 1s 0 0 0.00000 0 62 85.00000 0.00000 100% - 1s 0 0 0.00000 0 2 85.00000 0.00000 100% - 1s 0 2 0.00000 0 94 85.00000 0.00000 100% - 1s * 25 25 18 5.0000000 0.30488 93.9% 37.0 2s H 34 15 4.0000000 0.44198 89.0% 28.2 2s Cutting planes: Explored 157 nodes (5327 simplex iterations) in 2.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.999999998803e+00, best bound 3.999999998803e+00, gap 0.0%