Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:38:00 2012 Optimize a model with 599 rows, 154 columns and 1198 nonzeros Presolve removed 112 rows and 0 columns Presolve time: 0.00s Presolved: 487 rows, 154 columns, 1042 nonzeros Variable types: 0 continuous, 154 integer (154 binary) Found heuristic solution: objective 49.0000000 Root relaxation: objective 6.400000e+01, 271 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 64.00000 0 122 49.00000 64.00000 30.6% - 0s 0 0 62.75000 0 142 49.00000 62.75000 28.1% - 0s 0 0 62.33333 0 150 49.00000 62.33333 27.2% - 0s H 0 0 50.0000000 62.33333 24.7% - 0s 0 0 61.24876 0 150 50.00000 61.24876 22.5% - 0s 0 0 61.03000 0 151 50.00000 61.03000 22.1% - 0s 0 0 60.81531 0 152 50.00000 60.81531 21.6% - 0s 0 0 60.66680 0 150 50.00000 60.66680 21.3% - 0s 0 0 60.50147 0 153 50.00000 60.50147 21.0% - 0s 0 0 60.24126 0 151 50.00000 60.24126 20.5% - 0s 0 0 60.06341 0 153 50.00000 60.06341 20.1% - 0s 0 0 59.79098 0 153 50.00000 59.79098 19.6% - 0s 0 0 59.67292 0 153 50.00000 59.67292 19.3% - 0s 0 0 59.54892 0 153 50.00000 59.54892 19.1% - 0s 0 0 59.52627 0 154 50.00000 59.52627 19.1% - 0s 0 0 59.52627 0 152 50.00000 59.52627 19.1% - 0s H 0 0 52.0000000 59.52627 14.5% - 0s 0 2 59.52200 0 152 52.00000 59.52200 14.5% - 0s H 53 29 53.0000000 59.08500 11.5% 51.4 0s 612 150 55.22603 14 151 53.00000 56.50730 6.62% 39.9 5s Cutting planes: Gomory: 8 Zero half: 71 Explored 2438 nodes (78853 simplex iterations) in 8.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.300000000000e+01, best bound 5.300000000000e+01, gap 0.0%