Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:19 2012 Optimize a model with 365 rows, 116 columns and 730 nonzeros Presolve removed 71 rows and 4 columns Presolve time: 0.00s Presolved: 294 rows, 112 columns, 618 nonzeros Variable types: 0 continuous, 112 integer (112 binary) Found heuristic solution: objective 42.0000000 Root relaxation: objective 5.100000e+01, 152 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 51.00000 0 90 42.00000 51.00000 21.4% - 0s 0 0 49.50000 0 109 42.00000 49.50000 17.9% - 0s 0 0 48.66667 0 104 42.00000 48.66667 15.9% - 0s 0 0 48.42857 0 107 42.00000 48.42857 15.3% - 0s H 0 0 43.0000000 48.42857 12.6% - 0s 0 0 47.97838 0 107 43.00000 47.97838 11.6% - 0s 0 0 47.76633 0 112 43.00000 47.76633 11.1% - 0s 0 0 47.58586 0 110 43.00000 47.58586 10.7% - 0s 0 0 47.45249 0 112 43.00000 47.45249 10.4% - 0s 0 0 47.42194 0 111 43.00000 47.42194 10.3% - 0s 0 0 47.37487 0 112 43.00000 47.37487 10.2% - 0s 0 0 47.29001 0 112 43.00000 47.29001 10.0% - 0s 0 0 47.26100 0 111 43.00000 47.26100 9.91% - 0s 0 0 47.24705 0 111 43.00000 47.24705 9.88% - 0s 0 0 47.24705 0 111 43.00000 47.24705 9.88% - 0s 0 2 47.24607 0 111 43.00000 47.24607 9.87% - 0s H 6 6 44.0000000 47.02266 6.87% 39.8 0s Cutting planes: Gomory: 1 Zero half: 73 Explored 56 nodes (2301 simplex iterations) in 0.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.400000000000e+01, best bound 4.400000000000e+01, gap 0.0%