Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:42:19 2012 Optimize a model with 160 rows, 492 columns and 492 nonzeros Model has 318 quadratic constraints Presolve removed 0 rows and 26 columns Presolve time: 1.86s Presolved: 160 rows, 466 columns, 466 nonzeros Variable types: 318 continuous, 148 integer (147 binary) Root relaxation: objective 0.000000e+00, 57 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 73.0000000 - - - 1s 0 0 0.00000 0 16 73.00000 0.00000 100% - 1s 0 0 0.00000 0 10 73.00000 0.00000 100% - 1s 0 0 0.00000 0 3 73.00000 0.00000 100% - 1s 0 2 0.00000 0 104 73.00000 0.00000 100% - 1s * 23 13 14 4.0000000 0.75000 81.2% 55.3 1s Cutting planes: Explored 67 nodes (2988 simplex iterations) in 1.99 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%