Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:29:10 2012 Optimize a model with 123 rows, 401 columns and 401 nonzeros Model has 244 quadratic constraints Presolve removed 0 rows and 33 columns Presolve time: 1.42s Presolved: 123 rows, 368 columns, 368 nonzeros Variable types: 244 continuous, 124 integer (123 binary) Root relaxation: objective 0.000000e+00, 45 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 54.0000000 - - - 1s 0 0 0.00000 0 2 54.00000 0.00000 100% - 1s 0 0 0.00000 0 59 54.00000 0.00000 100% - 1s 0 0 0.00000 0 55 54.00000 0.00000 100% - 1s 0 2 0.00000 0 55 54.00000 0.00000 100% - 1s * 20 18 15 4.0000000 0.42553 89.4% 32.9 1s * 64 26 15 3.0000000 0.77273 74.2% 18.2 1s Cutting planes: Explored 188 nodes (3381 simplex iterations) in 1.53 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%