Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:37:41 2012 Optimize a model with 41 rows, 38 columns and 138 nonzeros Presolve time: 0.00s Presolved: 41 rows, 38 columns, 138 nonzeros Variable types: 0 continuous, 38 integer (38 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 0.000000e+00, 23 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 16 8.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s H 0 0 5.0000000 0.00000 100% - 0s 0 0 0.43750 0 17 5.00000 0.43750 91.2% - 0s 0 0 1.09455 0 20 5.00000 1.09455 78.1% - 0s 0 0 1.12950 0 22 5.00000 1.12950 77.4% - 0s 0 0 1.20561 0 22 5.00000 1.20561 75.9% - 0s 0 0 1.21416 0 25 5.00000 1.21416 75.7% - 0s 0 0 1.21416 0 25 5.00000 1.21416 75.7% - 0s 0 2 1.21485 0 25 5.00000 1.21485 75.7% - 0s * 12 11 7 4.0000000 1.38275 65.4% 9.2 0s * 21 9 5 3.0000000 1.53846 48.7% 7.7 0s Cutting planes: Gomory: 3 Zero half: 5 Explored 45 nodes (376 simplex iterations) in 0.02 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%