Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:27:29 2012 Optimize a model with 1 rows, 153 columns and 153 nonzeros Model has 124 quadratic objective terms Presolve removed 0 rows and 29 columns Presolve time: 0.00s Presolved: 125 rows, 248 columns, 496 nonzeros Variable types: 0 continuous, 248 integer (247 binary) Found heuristic solution: objective 37.0000000 Root relaxation: objective 0.000000e+00, 147 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 36 37.00000 0.00000 100% - 0s H 0 0 28.0000000 0.00000 100% - 0s 0 0 0.00000 0 19 28.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s H 0 0 16.0000000 0.00000 100% - 0s 0 0 0.00000 0 19 16.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 14.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 0 0.00000 0 12 11.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 10.00000 0.00000 100% - 0s 0 0 0.00000 0 14 10.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 2 0.00000 0 14 9.00000 0.00000 100% - 0s H 27 20 8.0000000 0.00000 100% 3.3 0s H 54 44 7.0000000 0.00000 100% 4.0 0s H 259 75 4.0000000 0.00000 100% 5.7 0s H 349 30 2.0000000 0.00000 100% 6.5 0s H 407 7 1.0000000 0.00000 100% 8.0 0s Cutting planes: Cover: 204 Explored 408 nodes (3708 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%