Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:26:35 2012 Optimize a model with 1 rows, 150 columns and 150 nonzeros Model has 120 quadratic objective terms Presolve removed 0 rows and 27 columns Presolve time: 0.00s Presolved: 121 rows, 243 columns, 483 nonzeros Variable types: 0 continuous, 243 integer (242 binary) Found heuristic solution: objective 33.0000000 Root relaxation: objective 0.000000e+00, 156 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 34 33.00000 0.00000 100% - 0s 0 0 0.00000 0 23 33.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.00000 0 22 16.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 18 12.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 12 8.00000 0.00000 100% - 0s 0 0 0.00000 0 13 8.00000 0.00000 100% - 0s 0 0 0.00000 0 13 8.00000 0.00000 100% - 0s 0 2 0.00000 0 13 8.00000 0.00000 100% - 0s H 52 43 7.0000000 0.00000 100% 3.3 0s * 59 43 22 6.0000000 0.00000 100% 3.7 0s H 112 71 5.0000000 0.00000 100% 4.1 0s H 123 64 4.0000000 0.00000 100% 4.0 0s * 318 100 14 3.0000000 0.00000 100% 6.9 0s * 332 57 12 2.0000000 0.00000 100% 7.2 0s Cutting planes: Cover: 209 Explored 429 nodes (6503 simplex iterations) in 0.13 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%