Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:24:09 2012 Optimize a model with 1 rows, 141 columns and 141 nonzeros Model has 101 quadratic objective terms Presolve removed 0 rows and 34 columns Presolve time: 0.00s Presolved: 102 rows, 208 columns, 410 nonzeros Variable types: 0 continuous, 208 integer (207 binary) Found heuristic solution: objective 27.0000000 Root relaxation: objective 0.000000e+00, 124 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 11 27.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 0 0.00000 0 13 11.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 9 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 9 6.00000 0.00000 100% - 0s 0 0 0.00000 0 7 6.00000 0.00000 100% - 0s 0 0 0.00000 0 6 6.00000 0.00000 100% - 0s 0 0 0.00000 0 6 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 8 5.00000 0.00000 100% - 0s 0 2 0.00000 0 8 5.00000 0.00000 100% - 0s H 27 19 4.0000000 0.00000 100% 2.1 0s H 108 16 2.0000000 0.00000 100% 2.1 0s * 454 3 13 1.0000000 0.00000 100% 8.1 0s Cutting planes: Cover: 178 Explored 455 nodes (4007 simplex iterations) in 0.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+00, best bound 1.000000000000e+00, gap 0.0%