Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:16 2012 Optimize a model with 51 rows, 141 columns and 141 nonzeros Model has 100 quadratic constraints Presolve removed 0 rows and 5 columns Presolve time: 0.58s Presolved: 51 rows, 136 columns, 136 nonzeros Variable types: 100 continuous, 36 integer (35 binary) Root relaxation: objective 0.000000e+00, 20 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 29.0000000 - - - 0s 0 0 0.00000 0 12 29.00000 0.00000 100% - 0s 0 0 0.00000 0 23 29.00000 0.00000 100% - 0s 0 0 0.00000 0 22 29.00000 0.00000 100% - 0s 0 2 0.00000 0 12 29.00000 0.00000 100% - 0s * 12 12 9 8.0000000 1.59259 80.1% 25.2 0s * 17 13 12 7.0000000 1.59259 77.2% 20.5 0s * 153 14 5 6.0000000 4.00000 33.3% 9.9 0s Cutting planes: Explored 180 nodes (1993 simplex iterations) in 0.63 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.000000000000e+00, best bound 6.000000000000e+00, gap 0.0%