Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:25:26 2012 Optimize a model with 1 rows, 146 columns and 146 nonzeros Model has 117 quadratic objective terms Presolve removed 0 rows and 26 columns Presolve time: 0.00s Presolved: 118 rows, 237 columns, 471 nonzeros Variable types: 0 continuous, 237 integer (236 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 0.000000e+00, 141 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 34 32.00000 0.00000 100% - 0s 0 0 0.00000 0 25 32.00000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 0 0.00000 0 28 19.00000 0.00000 100% - 0s 0 0 0.00000 0 21 19.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 2 0.00000 0 21 12.00000 0.00000 100% - 0s H 27 27 10.0000000 0.00000 100% 3.8 0s H 70 58 8.0000000 0.00000 100% 4.0 0s * 73 50 22 7.0000000 0.00000 100% 3.9 0s H 88 40 6.0000000 0.00000 100% 3.7 0s H 91 39 5.0000000 0.00000 100% 3.8 0s H 124 39 4.0000000 0.00000 100% 3.7 0s H 135 26 3.0000000 0.00000 100% 3.9 0s * 326 28 12 2.0000000 0.00000 100% 11.9 0s Cutting planes: Cover: 206 Explored 357 nodes (5540 simplex iterations) in 0.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%