Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:27:10 2012 Optimize a model with 1 rows, 152 columns and 152 nonzeros Model has 130 quadratic objective terms Presolve removed 0 rows and 25 columns Presolve time: 0.00s Presolved: 131 rows, 257 columns, 517 nonzeros Variable types: 0 continuous, 257 integer (256 binary) Found heuristic solution: objective 31.0000000 Root relaxation: objective 0.000000e+00, 165 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 18 31.00000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 18.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.00000 0 12 13.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 11 8.00000 0.00000 100% - 0s 0 0 0.00000 0 22 8.00000 0.00000 100% - 0s 0 0 0.00000 0 6 8.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.00000 0 5 6.00000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s 0 0 0.00000 0 8 5.00000 0.00000 100% - 0s 0 0 0.00000 0 4 5.00000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s 0 0 0.00000 0 4 4.00000 0.00000 100% - 0s 0 0 0.00000 0 4 4.00000 0.00000 100% - 0s 0 2 0.00000 0 4 4.00000 0.00000 100% - 0s H 89 18 3.0000000 0.00000 100% 1.8 0s H 600 65 2.0000000 0.00000 100% 9.0 0s Cutting planes: Gomory: 1 Cover: 1 Explored 30134 nodes (39982 simplex iterations) in 1.64 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%