Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:44:01 2012 Optimize a model with 191 rows, 140 columns and 615 nonzeros Presolve time: 0.00s Presolved: 191 rows, 140 columns, 615 nonzeros Variable types: 0 continuous, 140 integer (140 binary) Found heuristic solution: objective 39.0000000 Root relaxation: objective 0.000000e+00, 83 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 45 39.00000 0.00000 100% - 0s H 0 0 33.0000000 0.00000 100% - 0s 0 0 0.57126 0 48 33.00000 0.57126 98.3% - 0s 0 0 0.63089 0 49 33.00000 0.63089 98.1% - 0s 0 0 0.69059 0 53 33.00000 0.69059 97.9% - 0s H 0 0 24.0000000 0.69059 97.1% - 0s 0 0 0.71253 0 52 24.00000 0.71253 97.0% - 0s 0 0 0.82304 0 54 24.00000 0.82304 96.6% - 0s 0 0 0.83085 0 54 24.00000 0.83085 96.5% - 0s 0 2 0.83519 0 54 24.00000 0.83519 96.5% - 0s * 41 26 11 21.0000000 4.08920 80.5% 24.2 0s * 59 34 11 20.0000000 6.71429 66.4% 23.6 0s H 303 73 19.0000000 10.30519 45.8% 17.4 0s Cutting planes: Gomory: 1 Zero half: 1 Mod-K: 4 Explored 692 nodes (10970 simplex iterations) in 0.25 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%