Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:26:53 2012 Optimize a model with 1 rows, 151 columns and 151 nonzeros Model has 122 quadratic objective terms Presolve removed 0 rows and 33 columns Presolve time: 0.00s Presolved: 123 rows, 240 columns, 484 nonzeros Variable types: 0 continuous, 240 integer (239 binary) Found heuristic solution: objective 31.0000000 Root relaxation: objective 0.000000e+00, 147 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 22 31.00000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 0 0.00000 0 16 19.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 0 0.00000 0 26 15.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 8 10.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 8 8.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.00000 0 10 6.00000 0.00000 100% - 0s 0 0 0.00000 0 10 6.00000 0.00000 100% - 0s 0 2 0.00000 0 10 6.00000 0.00000 100% - 0s H 27 16 5.0000000 0.00000 100% 1.2 0s H 297 60 3.0000000 0.00000 100% 4.8 0s H 374 41 2.0000000 0.00000 100% 7.5 0s Cutting planes: Cover: 206 Explored 420 nodes (4943 simplex iterations) in 0.11 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%