Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:33:58 2012 Optimize a model with 1 rows, 161 columns and 161 nonzeros Model has 134 quadratic objective terms Presolve removed 0 rows and 29 columns Presolve time: 0.00s Presolved: 135 rows, 266 columns, 534 nonzeros Variable types: 0 continuous, 266 integer (265 binary) Found heuristic solution: objective 35.0000000 Root relaxation: objective 0.000000e+00, 175 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 36 35.00000 0.00000 100% - 0s 0 0 0.00000 0 27 35.00000 0.00000 100% - 0s H 0 0 25.0000000 0.00000 100% - 0s H 0 0 24.0000000 0.00000 100% - 0s 0 0 0.00000 0 26 24.00000 0.00000 100% - 0s H 0 0 20.0000000 0.00000 100% - 0s 0 0 0.00000 0 23 20.00000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s 0 0 0.00000 0 26 18.00000 0.00000 100% - 0s 0 0 0.00000 0 20 18.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 2 0.00000 0 8 8.00000 0.00000 100% - 0s H 13 13 6.0000000 0.00000 100% 0.5 0s H 191 85 5.0000000 0.00000 100% 3.6 0s * 215 81 28 4.0000000 0.00000 100% 4.2 0s * 381 97 12 3.0000000 0.00000 100% 10.6 0s Cutting planes: Cover: 248 Explored 480 nodes (9775 simplex iterations) in 0.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%