Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:23 2012 Optimize a model with 390 rows, 119 columns and 780 nonzeros Presolve removed 78 rows and 0 columns Presolve time: 0.00s Presolved: 312 rows, 119 columns, 676 nonzeros Variable types: 0 continuous, 119 integer (119 binary) Found heuristic solution: objective 40.0000000 Root relaxation: objective 5.050000e+01, 195 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 50.50000 0 99 40.00000 50.50000 26.2% - 0s 0 0 49.75000 0 114 40.00000 49.75000 24.4% - 0s 0 0 48.86667 0 112 40.00000 48.86667 22.2% - 0s 0 0 48.30286 0 113 40.00000 48.30286 20.8% - 0s H 0 0 41.0000000 48.30286 17.8% - 0s 0 0 47.65942 0 114 41.00000 47.65942 16.2% - 0s 0 0 47.37255 0 111 41.00000 47.37255 15.5% - 0s 0 0 47.28783 0 114 41.00000 47.28783 15.3% - 0s 0 0 47.12088 0 113 41.00000 47.12088 14.9% - 0s H 0 0 42.0000000 47.12088 12.2% - 0s 0 0 47.04323 0 115 42.00000 47.04323 12.0% - 0s 0 0 46.93035 0 114 42.00000 46.93035 11.7% - 0s 0 0 46.85000 0 115 42.00000 46.85000 11.5% - 0s 0 0 46.80567 0 114 42.00000 46.80567 11.4% - 0s 0 0 46.79778 0 114 42.00000 46.79778 11.4% - 0s 0 0 46.79778 0 114 42.00000 46.79778 11.4% - 0s 0 2 46.79778 0 114 42.00000 46.79778 11.4% - 0s * 7 7 5 44.0000000 46.77035 6.30% 43.9 0s Cutting planes: Gomory: 1 Zero half: 71 Explored 56 nodes (2513 simplex iterations) in 0.13 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%