Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:59 2012 Optimize a model with 51 rows, 147 columns and 147 nonzeros Model has 100 quadratic constraints Presolve removed 0 rows and 6 columns Presolve time: 0.58s Presolved: 51 rows, 141 columns, 141 nonzeros Variable types: 100 continuous, 41 integer (40 binary) Root relaxation: objective 0.000000e+00, 21 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 23 24.00000 0.00000 100% - 0s 0 0 0.00000 0 33 24.00000 0.00000 100% - 0s 0 0 0.00000 0 25 24.00000 0.00000 100% - 0s 0 2 0.00000 0 22 24.00000 0.00000 100% - 0s * 7 7 4 5.0000000 1.66667 66.7% 40.9 0s * 47 6 8 4.0000000 3.40000 15.0% 11.4 0s Cutting planes: Gomory: 14 Explored 56 nodes (1071 simplex iterations) in 0.62 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%