Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:42:08 2012 Optimize a model with 154 rows, 480 columns and 480 nonzeros Model has 306 quadratic constraints Presolve removed 0 rows and 30 columns Presolve time: 1.79s Presolved: 154 rows, 450 columns, 450 nonzeros Variable types: 306 continuous, 144 integer (143 binary) Root relaxation: objective 0.000000e+00, 55 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time H 0 0 81.0000000 - - - 1s 0 0 0.00000 0 5 81.00000 0.00000 100% - 1s 0 0 0.00000 0 8 81.00000 0.00000 100% - 1s 0 0 0.00000 0 2 81.00000 0.00000 100% - 1s 0 2 0.00000 0 2 81.00000 0.00000 100% - 1s H 24 24 11.0000000 0.00000 100% 54.6 1s * 35 35 24 10.0000000 0.00000 100% 42.5 1s H 48 18 6.0000000 0.00000 100% 40.0 1s * 115 22 11 5.0000000 2.82524 43.5% 24.9 1s Cutting planes: Gomory: 1 Explored 221 nodes (4442 simplex iterations) in 1.94 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%