Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:10:11 2012 Optimize a model with 1 rows, 41 columns and 41 nonzeros Model has 38 quadratic objective terms Presolve removed 0 rows and 7 columns Presolve time: 0.00s Presolved: 39 rows, 72 columns, 148 nonzeros Variable types: 0 continuous, 72 integer (71 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 0.000000e+00, 48 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 5 7.00000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s 0 0 0.00000 0 13 5.00000 0.00000 100% - 0s H 0 0 2.0000000 0.00000 100% - 0s 0 0 0.00000 0 7 2.00000 0.00000 100% - 0s 0 0 0.00000 0 5 2.00000 0.00000 100% - 0s 0 0 0.00000 0 8 2.00000 0.00000 100% - 0s 0 0 0.00000 0 3 2.00000 0.00000 100% - 0s 0 0 0.00000 0 6 2.00000 0.00000 100% - 0s 0 0 0.00000 0 6 2.00000 0.00000 100% - 0s 0 2 0.00000 0 6 2.00000 0.00000 100% - 0s Cutting planes: Cover: 55 MIR: 2 Explored 85 nodes (616 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%