Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:34 2012 Optimize a model with 49 rows, 140 columns and 140 nonzeros Model has 96 quadratic constraints Presolve removed 0 rows and 3 columns Presolve time: 0.58s Presolved: 49 rows, 137 columns, 137 nonzeros Variable types: 96 continuous, 41 integer (40 binary) Root relaxation: objective 0.000000e+00, 19 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 24.0000000 - - - 0s 0 0 0.00000 0 14 24.00000 0.00000 100% - 0s 0 0 0.00000 0 19 24.00000 0.00000 100% - 0s 0 0 0.00000 0 35 24.00000 0.00000 100% - 0s 0 2 0.00000 0 35 24.00000 0.00000 100% - 0s * 17 17 10 5.0000000 1.43478 71.3% 16.4 0s * 20 8 11 4.0000000 1.43478 64.1% 14.9 0s Cutting planes: Explored 62 nodes (1116 simplex iterations) in 0.61 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%