Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:44 2012 Optimize a model with 55 rows, 139 columns and 139 nonzeros Model has 108 quadratic constraints Presolve time: 0.63s Presolved: 55 rows, 139 columns, 139 nonzeros Variable types: 108 continuous, 31 integer (31 binary) Root relaxation: objective 0.000000e+00, 15 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 26.0000000 - - - 0s 0 0 0.00000 0 17 26.00000 0.00000 100% - 0s 0 0 0.07143 0 30 26.00000 0.07143 100% - 0s 0 2 0.14286 0 30 26.00000 0.14286 99.5% - 0s H 16 14 10.0000000 2.14286 78.6% 18.8 0s * 17 13 11 9.0000000 2.14286 76.2% 17.9 0s Cutting planes: Gomory: 1 Explored 72 nodes (1506 simplex iterations) in 0.67 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%