Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:33:58 2012 Optimize a model with 1 rows, 161 columns and 161 nonzeros Model has 112 quadratic objective terms Presolve removed 0 rows and 38 columns Presolve time: 0.00s Presolved: 113 rows, 235 columns, 459 nonzeros Variable types: 0 continuous, 235 integer (234 binary) Found heuristic solution: objective 21.0000000 Root relaxation: objective 0.000000e+00, 139 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 19 21.00000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.00000 0 13 16.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 8 9.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.00000 0 8 6.00000 0.00000 100% - 0s 0 0 0.00000 0 5 6.00000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s H 0 0 4.0000000 0.00000 100% - 0s 0 0 0.00000 0 9 4.00000 0.00000 100% - 0s 0 0 0.00000 0 5 4.00000 0.00000 100% - 0s 0 0 0.00000 0 8 4.00000 0.00000 100% - 0s 0 0 0.00000 0 7 4.00000 0.00000 100% - 0s 0 2 0.00000 0 7 4.00000 0.00000 100% - 0s H 218 19 2.0000000 0.00000 100% 2.1 0s * 376 14 10 1.0000000 0.00000 100% 5.6 0s Cutting planes: Cover: 137 Explored 377 nodes (2428 simplex iterations) in 0.07 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%