Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:11:48 2012 Optimize a model with 197 rows, 150 columns and 640 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 197 rows, 149 columns, 639 nonzeros Variable types: 0 continuous, 149 integer (148 binary) Found heuristic solution: objective 50.0000000 Root relaxation: objective 0.000000e+00, 77 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 50 50.00000 0.00000 100% - 0s H 0 0 43.0000000 0.00000 100% - 0s H 0 0 35.0000000 0.00000 100% - 0s H 0 0 25.0000000 0.00000 100% - 0s 0 0 0.48000 0 51 25.00000 0.48000 98.1% - 0s H 0 0 23.0000000 0.48000 97.9% - 0s 0 0 1.00000 0 52 23.00000 1.00000 95.7% - 0s 0 0 1.00000 0 50 23.00000 1.00000 95.7% - 0s 0 2 1.00000 0 50 23.00000 1.00000 95.7% - 0s * 29 21 18 17.0000000 4.00000 76.5% 23.5 0s Cutting planes: Gomory: 2 Explored 819 nodes (16278 simplex iterations) in 0.37 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.700000000000e+01, best bound 1.700000000000e+01, gap 0.0%