Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:23 2012 Optimize a model with 368 rows, 120 columns and 736 nonzeros Presolve removed 64 rows and 4 columns Presolve time: 0.00s Presolved: 304 rows, 116 columns, 639 nonzeros Variable types: 0 continuous, 116 integer (116 binary) Found heuristic solution: objective 41.0000000 Root relaxation: objective 5.325000e+01, 165 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 53.25000 0 105 41.00000 53.25000 29.9% - 0s H 0 0 43.0000000 53.25000 23.8% - 0s 0 0 51.50000 0 95 43.00000 51.50000 19.8% - 0s 0 0 51.25000 0 110 43.00000 51.25000 19.2% - 0s 0 0 50.81250 0 115 43.00000 50.81250 18.2% - 0s 0 0 50.33333 0 106 43.00000 50.33333 17.1% - 0s 0 0 49.72500 0 115 43.00000 49.72500 15.6% - 0s 0 0 49.57895 0 115 43.00000 49.57895 15.3% - 0s 0 0 49.22857 0 114 43.00000 49.22857 14.5% - 0s 0 0 49.09742 0 112 43.00000 49.09742 14.2% - 0s 0 0 49.07347 0 114 43.00000 49.07347 14.1% - 0s 0 0 49.07347 0 114 43.00000 49.07347 14.1% - 0s 0 2 49.07109 0 114 43.00000 49.07109 14.1% - 0s H 33 18 44.0000000 48.85714 11.0% 24.7 0s H 38 17 45.0000000 48.85714 8.57% 23.1 0s * 234 14 8 46.0000000 47.21875 2.65% 20.8 0s Cutting planes: Gomory: 3 Zero half: 114 Explored 249 nodes (5746 simplex iterations) in 0.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.600000000000e+01, best bound 4.600000000000e+01, gap 0.0%