Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:29:17 2012 Optimize a model with 1 rows, 158 columns and 158 nonzeros Model has 128 quadratic objective terms Presolve removed 0 rows and 31 columns Presolve time: 0.00s Presolved: 129 rows, 255 columns, 511 nonzeros Variable types: 0 continuous, 255 integer (254 binary) Found heuristic solution: objective 44.0000000 Root relaxation: objective 0.000000e+00, 162 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 44.00000 0.00000 100% - 0s H 0 0 34.0000000 0.00000 100% - 0s 0 0 0.00000 0 37 34.00000 0.00000 100% - 0s H 0 0 32.0000000 0.00000 100% - 0s 0 0 0.00000 0 16 32.00000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s 0 0 0.00000 0 19 13.00000 0.00000 100% - 0s 0 0 0.00000 0 19 13.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 2 0.00000 0 19 10.00000 0.00000 100% - 0s H 135 107 9.0000000 0.00000 100% 3.2 0s H 162 84 7.0000000 0.00000 100% 3.4 0s H 216 99 6.0000000 0.00000 100% 4.2 0s H 257 95 5.0000000 0.00000 100% 5.2 0s * 259 76 27 4.0000000 0.00000 100% 5.2 0s * 355 54 18 3.0000000 0.00000 100% 7.2 0s * 426 25 7 2.0000000 0.00000 100% 9.2 0s Cutting planes: Cover: 230 MIR: 2 Explored 459 nodes (6211 simplex iterations) in 0.14 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%