Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:39:08 2012 Optimize a model with 61 rows, 154 columns and 154 nonzeros Model has 120 quadratic constraints Presolve removed 0 rows and 1 columns Presolve time: 0.70s Presolved: 61 rows, 153 columns, 153 nonzeros Variable types: 120 continuous, 33 integer (32 binary) Root relaxation: objective 0.000000e+00, 16 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 30.0000000 - - - 0s 0 0 0.00000 0 2 30.00000 0.00000 100% - 0s 0 0 0.00000 0 10 30.00000 0.00000 100% - 0s 0 0 0.00000 0 16 30.00000 0.00000 100% - 0s 0 2 0.00000 0 32 30.00000 0.00000 100% - 0s H 16 16 13.0000000 2.00000 84.6% 24.6 0s * 21 13 9 12.0000000 2.00000 83.3% 20.3 0s Cutting planes: Explored 199 nodes (3748 simplex iterations) in 0.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%