Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:02 2012 Optimize a model with 51 rows, 49 columns and 174 nonzeros Presolve time: 0.00s Presolved: 51 rows, 49 columns, 174 nonzeros Variable types: 0 continuous, 49 integer (49 binary) Found heuristic solution: objective 14.0000000 Found heuristic solution: objective 11.0000000 Root relaxation: objective 0.000000e+00, 37 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 23 11.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s 0 0 0.38413 0 25 5.00000 0.38413 92.3% - 0s H 0 0 4.0000000 0.38413 90.4% - 0s 0 0 0.86361 0 26 4.00000 0.86361 78.4% - 0s H 0 0 2.0000000 0.86361 56.8% - 0s 0 0 cutoff 0 2.00000 1.00000 50.0% - 0s Cutting planes: Gomory: 3 Zero half: 13 Explored 0 nodes (140 simplex iterations) in 0.01 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%