Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:51 2012 Optimize a model with 58 rows, 160 columns and 160 nonzeros Model has 114 quadratic constraints Presolve removed 0 rows and 1 columns Presolve time: 0.66s Presolved: 58 rows, 159 columns, 159 nonzeros Variable types: 114 continuous, 45 integer (44 binary) Root relaxation: objective 0.000000e+00, 23 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 2 24.00000 0.00000 100% - 0s 0 0 0.00000 0 39 24.00000 0.00000 100% - 0s 0 0 0.00000 0 28 24.00000 0.00000 100% - 0s 0 2 0.00000 0 28 24.00000 0.00000 100% - 0s H 16 16 8.0000000 1.62857 79.6% 22.2 0s * 70 22 7 7.0000000 2.51515 64.1% 13.8 0s Cutting planes: Explored 134 nodes (2246 simplex iterations) in 0.72 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%