Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:24:54 2012 Optimize a model with 1 rows, 144 columns and 144 nonzeros Model has 113 quadratic objective terms Presolve removed 0 rows and 26 columns Presolve time: 0.00s Presolved: 114 rows, 231 columns, 457 nonzeros Variable types: 0 continuous, 231 integer (230 binary) Found heuristic solution: objective 34.0000000 Root relaxation: objective 0.000000e+00, 137 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 33 34.00000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s 0 0 0.00000 0 20 27.00000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s 0 0 0.00000 0 12 21.00000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 24 10.00000 0.00000 100% - 0s H 0 0 7.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 7.00000 0.00000 100% - 0s 0 0 0.00000 0 14 7.00000 0.00000 100% - 0s 0 0 0.00000 0 14 7.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 2 0.00000 0 14 6.00000 0.00000 100% - 0s H 27 12 5.0000000 0.00000 100% 2.6 0s * 91 27 31 4.0000000 0.00000 100% 2.1 0s H 278 75 3.0000000 0.00000 100% 4.8 0s H 302 39 2.0000000 0.00000 100% 5.0 0s * 395 1 8 1.0000000 1.00000 0.0% 7.3 0s Cutting planes: Cover: 175 MIR: 1 Zero half: 1 Explored 396 nodes (3269 simplex iterations) in 0.09 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%