Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:13:12 2012 Optimize a model with 1 rows, 58 columns and 58 nonzeros Model has 111 quadratic objective terms Presolve time: 0.00s Presolved: 112 rows, 169 columns, 391 nonzeros Variable types: 0 continuous, 169 integer (169 binary) Found heuristic solution: objective 57.0000000 Root relaxation: objective 0.000000e+00, 143 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 57.00000 0.00000 100% - 0s H 0 0 40.0000000 0.00000 100% - 0s 0 0 0.00000 0 43 40.00000 0.00000 100% - 0s H 0 0 36.0000000 0.00000 100% - 0s 0 0 0.00000 0 64 36.00000 0.00000 100% - 0s H 0 0 34.0000000 0.00000 100% - 0s 0 0 0.00000 0 27 34.00000 0.00000 100% - 0s H 0 0 27.0000000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s 0 0 0.00000 0 35 26.00000 0.00000 100% - 0s 0 0 0.00000 0 35 26.00000 0.00000 100% - 0s H 0 0 25.0000000 0.00000 100% - 0s 0 2 0.00000 0 30 25.00000 0.00000 100% - 0s H 230 164 23.0000000 0.00000 100% 7.9 0s H 235 162 22.0000000 0.00000 100% 7.9 0s H 245 162 21.0000000 0.00000 100% 8.7 0s * 252 160 17 20.0000000 0.00000 100% 8.7 0s H 272 141 18.0000000 0.00000 100% 9.1 0s * 342 138 13 17.0000000 2.00000 88.2% 11.9 0s Cutting planes: Cover: 214 MIR: 9 Zero half: 7 Explored 734 nodes (17337 simplex iterations) in 0.37 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%