Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:42:49 2012 Optimize a model with 165 rows, 126 columns and 536 nonzeros Presolve time: 0.00s Presolved: 165 rows, 126 columns, 536 nonzeros Variable types: 0 continuous, 126 integer (126 binary) Found heuristic solution: objective 39.0000000 Root relaxation: objective 0.000000e+00, 67 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 39.00000 0.00000 100% - 0s H 0 0 30.0000000 0.00000 100% - 0s H 0 0 28.0000000 0.00000 100% - 0s 0 0 0.50000 0 45 28.00000 0.50000 98.2% - 0s H 0 0 27.0000000 0.50000 98.1% - 0s 0 0 0.50192 0 49 27.00000 0.50192 98.1% - 0s 0 2 0.50916 0 49 27.00000 0.50916 98.1% - 0s * 13 13 7 17.0000000 4.00124 76.5% 22.3 0s * 16 11 8 16.0000000 4.00124 75.0% 19.2 0s * 51 20 10 15.0000000 6.79245 54.7% 16.9 0s Cutting planes: Gomory: 1 Mod-K: 2 Explored 109 nodes (1978 simplex iterations) in 0.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.500000000000e+01, best bound 1.500000000000e+01, gap 0.0%