Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:36:30 2012 Optimize a model with 1 rows, 167 columns and 167 nonzeros Model has 158 quadratic objective terms Presolve removed 0 rows and 25 columns Presolve time: 0.00s Presolved: 159 rows, 300 columns, 616 nonzeros Variable types: 0 continuous, 300 integer (299 binary) Found heuristic solution: objective 42.0000000 Root relaxation: objective 0.000000e+00, 195 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 48 42.00000 0.00000 100% - 0s 0 0 0.00000 0 28 42.00000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s 0 0 0.00000 0 43 26.00000 0.00000 100% - 0s 0 0 0.00000 0 35 26.00000 0.00000 100% - 0s 0 0 0.00000 0 23 26.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.00000 0 19 17.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 24 14.00000 0.00000 100% - 0s 0 0 0.00000 0 24 14.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 2 0.00000 0 24 13.00000 0.00000 100% - 0s H 27 27 12.0000000 0.00000 100% 2.9 0s H 470 261 10.0000000 0.00000 100% 9.0 0s H 488 191 8.0000000 0.00000 100% 9.0 0s H 543 115 6.0000000 0.00000 100% 9.9 0s H 550 88 5.0000000 0.00000 100% 10.2 0s Cutting planes: Cover: 295 Explored 647 nodes (14352 simplex iterations) in 0.31 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%