Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:40:45 2012 Optimize a model with 1 rows, 172 columns and 172 nonzeros Model has 159 quadratic objective terms Presolve removed 0 rows and 24 columns Presolve time: 0.00s Presolved: 160 rows, 307 columns, 625 nonzeros Variable types: 0 continuous, 307 integer (306 binary) Found heuristic solution: objective 46.0000000 Root relaxation: objective 0.000000e+00, 192 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 40 46.00000 0.00000 100% - 0s H 0 0 36.0000000 0.00000 100% - 0s 0 0 0.00000 0 32 36.00000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s 0 0 0.00000 0 30 24.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.00000 0 38 16.00000 0.00000 100% - 0s 0 0 0.00000 0 37 16.00000 0.00000 100% - 0s 0 2 0.00000 0 26 16.00000 0.00000 100% - 0s H 67 67 15.0000000 0.00000 100% 1.8 0s H 81 58 13.0000000 0.00000 100% 2.3 0s H 108 76 11.0000000 0.00000 100% 2.6 0s H 135 77 10.0000000 0.00000 100% 2.6 0s H 270 152 9.0000000 0.00000 100% 5.1 0s H 483 237 7.0000000 0.00000 100% 8.5 0s H 568 158 5.0000000 1.00000 80.0% 12.7 0s Cutting planes: Cover: 304 Explored 737 nodes (20396 simplex iterations) in 0.36 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%