Gurobi 5.0.1 (linux64) logging started Tue Dec 25 15:27:41 2012 Optimize a model with 902 rows, 840 columns and 3540 nonzeros Presolve removed 232 rows and 40 columns Presolve time: 0.03s Presolved: 670 rows, 800 columns, 3213 nonzeros Variable types: 380 continuous, 420 integer (420 binary) Root relaxation: objective 1.519197e+02, 728 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 151.91967 0 46 - 151.91967 - - 0s 0 0 166.00102 0 41 - 166.00102 - - 0s 0 0 167.63246 0 38 - 167.63246 - - 0s 0 0 168.46255 0 37 - 168.46255 - - 0s 0 0 169.09434 0 37 - 169.09434 - - 0s 0 0 169.13088 0 37 - 169.13088 - - 0s H 0 0 253.0000000 169.13088 33.1% - 0s H 0 0 215.0000000 169.13088 21.3% - 0s H 0 0 212.0000000 169.13088 20.2% - 0s 0 2 169.44050 0 37 212.00000 169.44050 20.1% - 0s H 54 35 206.0000000 176.53241 14.3% 52.7 0s H 1513 325 201.0000000 186.42319 7.25% 29.9 3s Cutting planes: Gomory: 15 Cover: 7 Implied bound: 62 Flow cover: 55 GUB cover: 4 Explored 2513 nodes (66888 simplex iterations) in 3.97 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.010000000000e+02, best bound 2.010000000000e+02, gap 0.0%