Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:39:59 2012 Optimize a model with 1 rows, 171 columns and 171 nonzeros Model has 151 quadratic objective terms Presolve removed 0 rows and 31 columns Presolve time: 0.00s Presolved: 152 rows, 291 columns, 593 nonzeros Variable types: 0 continuous, 291 integer (290 binary) Found heuristic solution: objective 39.0000000 Root relaxation: objective 0.000000e+00, 174 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 35 39.00000 0.00000 100% - 0s H 0 0 32.0000000 0.00000 100% - 0s 0 0 0.00000 0 24 32.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s 0 0 0.00000 0 40 18.00000 0.00000 100% - 0s 0 0 0.00000 0 27 18.00000 0.00000 100% - 0s 0 0 0.00000 0 21 18.00000 0.00000 100% - 0s 0 0 0.00000 0 22 18.00000 0.00000 100% - 0s 0 0 0.00000 0 15 18.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s 0 0 0.00000 0 16 15.00000 0.00000 100% - 0s 0 0 0.00000 0 16 15.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s 0 2 0.00000 0 16 11.00000 0.00000 100% - 0s H 54 30 10.0000000 0.00000 100% 1.4 0s H 81 43 6.0000000 0.00000 100% 1.6 0s H 218 89 5.0000000 0.00000 100% 3.3 0s Cutting planes: Cover: 267 MIR: 1 Zero half: 2 Explored 744 nodes (18405 simplex iterations) in 0.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.000000000000e+00, best bound 5.000000000000e+00, gap 0.0%