Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:34:47 2012 Optimize a model with 1 rows, 163 columns and 163 nonzeros Model has 160 quadratic objective terms Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 161 rows, 300 columns, 620 nonzeros Variable types: 0 continuous, 300 integer (299 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 41 49.00000 0.00000 100% - 0s H 0 0 36.0000000 0.00000 100% - 0s 0 0 0.00000 0 48 36.00000 0.00000 100% - 0s H 0 0 28.0000000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s 0 0 0.00000 0 29 27.00000 0.00000 100% - 0s 0 0 0.00000 0 37 27.00000 0.00000 100% - 0s 0 0 0.00000 0 28 27.00000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s 0 0 0.00000 0 15 22.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 22 12.00000 0.00000 100% - 0s 0 0 0.00000 0 22 12.00000 0.00000 100% - 0s 0 2 0.00000 0 22 12.00000 0.00000 100% - 0s H 325 179 9.0000000 0.00000 100% 6.7 0s H 616 166 7.0000000 1.00000 85.7% 16.7 0s Cutting planes: Cover: 307 MIR: 3 Zero half: 1 Explored 817 nodes (27549 simplex iterations) in 0.54 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%