Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:08 2012 Optimize a model with 62 rows, 170 columns and 170 nonzeros Model has 122 quadratic constraints Presolve removed 0 rows and 3 columns Presolve time: 0.71s Presolved: 62 rows, 167 columns, 167 nonzeros Variable types: 122 continuous, 45 integer (44 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 40.0000000 - - - 0s 0 0 0.00000 0 9 40.00000 0.00000 100% - 0s 0 0 0.00000 0 27 40.00000 0.00000 100% - 0s 0 0 0.00000 0 27 40.00000 0.00000 100% - 0s 0 2 0.00000 0 27 40.00000 0.00000 100% - 0s * 19 19 16 13.0000000 2.11405 83.7% 16.7 0s * 20 18 15 12.0000000 2.11405 82.4% 16.4 0s * 30 13 6 8.0000000 3.56379 55.5% 14.0 0s * 39 16 13 7.0000000 3.56379 49.1% 12.1 0s Cutting planes: Gomory: 2 Explored 99 nodes (1301 simplex iterations) in 0.75 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%