Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:33:33 2012 Optimize a model with 1 rows, 160 columns and 160 nonzeros Model has 129 quadratic objective terms Presolve removed 0 rows and 27 columns Presolve time: 0.00s Presolved: 130 rows, 262 columns, 520 nonzeros Variable types: 0 continuous, 262 integer (261 binary) Found heuristic solution: objective 38.0000000 Root relaxation: objective 0.000000e+00, 164 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 38.00000 0.00000 100% - 0s H 0 0 34.0000000 0.00000 100% - 0s 0 0 0.00000 0 28 34.00000 0.00000 100% - 0s H 0 0 33.0000000 0.00000 100% - 0s 0 0 0.00000 0 29 33.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 0 0.00000 0 13 15.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 0 0.00000 0 23 11.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 19 8.00000 0.00000 100% - 0s 0 0 0.00000 0 17 8.00000 0.00000 100% - 0s 0 0 0.00000 0 19 8.00000 0.00000 100% - 0s 0 0 0.00000 0 18 8.00000 0.00000 100% - 0s 0 2 0.00000 0 16 8.00000 0.00000 100% - 0s H 108 68 7.0000000 0.00000 100% 3.1 0s H 217 108 6.0000000 0.00000 100% 3.5 0s H 380 114 4.0000000 0.00000 100% 4.5 0s H 413 59 2.0000000 0.00000 100% 4.9 0s Cutting planes: Cover: 215 MIR: 2 Zero half: 2 Explored 538 nodes (7082 simplex iterations) in 0.15 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%