Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:41:33 2012 Optimize a model with 1 rows, 173 columns and 173 nonzeros Model has 153 quadratic objective terms Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 154 rows, 303 columns, 609 nonzeros Variable types: 0 continuous, 303 integer (302 binary) Found heuristic solution: objective 49.0000000 Root relaxation: objective 0.000000e+00, 203 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 48 49.00000 0.00000 100% - 0s H 0 0 42.0000000 0.00000 100% - 0s 0 0 0.00000 0 29 42.00000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s 0 0 0.00000 0 40 23.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.00000 0 16 13.00000 0.00000 100% - 0s 0 0 0.00000 0 14 13.00000 0.00000 100% - 0s 0 0 0.00000 0 12 13.00000 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 7.0000000 0.00000 100% - 0s 0 0 0.00000 0 7 7.00000 0.00000 100% - 0s 0 0 0.00000 0 3 7.00000 0.00000 100% - 0s H 0 0 3.0000000 0.00000 100% - 0s 0 0 0.00000 0 3 3.00000 0.00000 100% - 0s H 0 0 2.0000000 0.00000 100% - 0s 0 0 0.00000 0 4 2.00000 0.00000 100% - 0s 0 0 0.00000 0 3 2.00000 0.00000 100% - 0s 0 0 0.00000 0 4 2.00000 0.00000 100% - 0s 0 0 0.00000 0 4 2.00000 0.00000 100% - 0s 0 2 0.00000 0 4 2.00000 0.00000 100% - 0s Cutting planes: Cover: 251 MIR: 6 Zero half: 3 Explored 538 nodes (8009 simplex iterations) in 0.17 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%