Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:42:03 2012 Optimize a model with 1 rows, 174 columns and 174 nonzeros Model has 181 quadratic objective terms Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 182 rows, 332 columns, 694 nonzeros Variable types: 0 continuous, 332 integer (331 binary) Found heuristic solution: objective 61.0000000 Root relaxation: objective 0.000000e+00, 227 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 51 61.00000 0.00000 100% - 0s H 0 0 48.0000000 0.00000 100% - 0s 0 0 0.00000 0 46 48.00000 0.00000 100% - 0s H 0 0 35.0000000 0.00000 100% - 0s 0 0 0.00000 0 58 35.00000 0.00000 100% - 0s 0 0 0.00000 0 39 35.00000 0.00000 100% - 0s 0 0 0.00000 0 34 35.00000 0.00000 100% - 0s H 0 0 32.0000000 0.00000 100% - 0s 0 0 0.00000 0 26 32.00000 0.00000 100% - 0s H 0 0 22.0000000 0.00000 100% - 0s 0 0 0.00000 0 29 22.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s 0 0 0.00000 0 29 20.00000 0.00000 100% - 0s 0 0 0.00000 0 29 20.00000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 2 0.00000 0 29 17.00000 0.00000 100% - 0s H 27 27 14.0000000 0.00000 100% 1.4 0s H 81 66 13.0000000 0.00000 100% 1.8 0s H 514 232 10.0000000 1.00000 90.0% 12.1 0s Cutting planes: Cover: 348 MIR: 6 Zero half: 1 Explored 1098 nodes (35438 simplex iterations) in 0.84 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%