Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:09:10 2012 Optimize a model with 1 rows, 27 columns and 27 nonzeros Model has 21 quadratic objective terms Presolve removed 0 rows and 5 columns Presolve time: 0.00s Presolved: 22 rows, 43 columns, 85 nonzeros Variable types: 0 continuous, 43 integer (42 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 0.000000e+00, 27 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 7 7.00000 0.00000 100% - 0s 0 0 0.00000 0 8 7.00000 0.00000 100% - 0s 0 0 0.00000 0 4 7.00000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s 0 2 0.00000 0 4 4.00000 0.00000 100% - 0s H 6 6 3.0000000 0.00000 100% 1.8 0s * 9 5 6 2.0000000 0.00000 100% 1.7 0s * 71 0 5 1.0000000 1.00000 0.0% 3.7 0s Cutting planes: Gomory: 1 Cover: 33 Explored 72 nodes (316 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+00, best bound 1.000000000000e+00, gap 0.0%