Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:28 2012 Optimize a model with 101 rows, 64 columns and 314 nonzeros Presolve time: 0.00s Presolved: 101 rows, 64 columns, 314 nonzeros Variable types: 0 continuous, 64 integer (64 binary) Found heuristic solution: objective 25.0000000 Root relaxation: objective 0.000000e+00, 19 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 14 25.00000 0.00000 100% - 0s 0 0 0.57143 0 16 25.00000 0.57143 97.7% - 0s 0 0 0.90977 0 25 25.00000 0.90977 96.4% - 0s 0 0 1.00000 0 16 25.00000 1.00000 96.0% - 0s 0 0 1.07143 0 17 25.00000 1.07143 95.7% - 0s 0 0 1.07143 0 17 25.00000 1.07143 95.7% - 0s 0 0 1.07143 0 17 25.00000 1.07143 95.7% - 0s H 0 0 23.0000000 1.07143 95.3% - 0s H 0 0 21.0000000 1.07143 94.9% - 0s 0 2 1.07143 0 17 21.00000 1.07143 94.9% - 0s * 34 13 8 20.0000000 5.00000 75.0% 11.7 0s * 87 11 7 19.0000000 13.00000 31.6% 8.7 0s Cutting planes: Gomory: 1 Zero half: 5 Explored 121 nodes (1092 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%