Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:41:17 2012 Optimize a model with 137 rows, 110 columns and 450 nonzeros Presolve time: 0.00s Presolved: 137 rows, 110 columns, 450 nonzeros Variable types: 0 continuous, 110 integer (110 binary) Found heuristic solution: objective 30.0000000 Root relaxation: objective 0.000000e+00, 63 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 42 30.00000 0.00000 100% - 0s H 0 0 25.0000000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.83333 0 44 17.00000 0.83333 95.1% - 0s H 0 0 16.0000000 0.83333 94.8% - 0s 0 0 0.83333 0 44 16.00000 0.83333 94.8% - 0s 0 0 0.83333 0 44 16.00000 0.83333 94.8% - 0s 0 2 0.83333 0 44 16.00000 0.83333 94.8% - 0s * 20 16 14 13.0000000 3.93889 69.7% 15.8 0s * 85 18 8 12.0000000 8.10526 32.5% 13.8 0s * 100 14 8 11.0000000 8.11111 26.3% 12.7 0s Cutting planes: Gomory: 1 Zero half: 2 Explored 128 nodes (1688 simplex iterations) in 0.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%