Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:34:46 2012 Optimize a model with 1 rows, 163 columns and 163 nonzeros Model has 147 quadratic objective terms Presolve removed 0 rows and 22 columns Presolve time: 0.00s Presolved: 148 rows, 288 columns, 582 nonzeros Variable types: 0 continuous, 288 integer (287 binary) Found heuristic solution: objective 47.0000000 Root relaxation: objective 0.000000e+00, 192 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 44 47.00000 0.00000 100% - 0s H 0 0 36.0000000 0.00000 100% - 0s 0 0 0.00000 0 28 36.00000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s 0 0 0.00000 0 25 21.00000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s 0 0 0.00000 0 21 18.00000 0.00000 100% - 0s 0 0 0.00000 0 28 18.00000 0.00000 100% - 0s 0 0 0.00000 0 17 18.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 17 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 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 10 9.00000 0.00000 100% - 0s 0 0 0.00000 0 15 9.00000 0.00000 100% - 0s 0 0 0.00000 0 14 9.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 2 0.00000 0 12 8.00000 0.00000 100% - 0s H 54 37 7.0000000 0.00000 100% 1.5 0s * 372 144 10 6.0000000 0.00000 100% 9.1 0s H 376 118 5.0000000 0.00000 100% 9.1 0s H 413 77 4.0000000 0.42105 89.5% 13.3 0s Cutting planes: Cover: 257 MIR: 3 Explored 503 nodes (14431 simplex iterations) in 0.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%