Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:40:39 2012 Optimize a model with 183 rows, 132 columns and 587 nonzeros Presolve time: 0.00s Presolved: 183 rows, 132 columns, 587 nonzeros Variable types: 0 continuous, 132 integer (132 binary) Found heuristic solution: objective 37.0000000 Root relaxation: objective 0.000000e+00, 66 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 41 37.00000 0.00000 100% - 0s H 0 0 36.0000000 0.00000 100% - 0s H 0 0 34.0000000 0.00000 100% - 0s 0 0 0.78799 0 42 34.00000 0.78799 97.7% - 0s 0 0 1.06942 0 43 34.00000 1.06942 96.9% - 0s 0 0 1.27802 0 45 34.00000 1.27802 96.2% - 0s 0 0 1.37844 0 46 34.00000 1.37844 95.9% - 0s H 0 0 30.0000000 1.37844 95.4% - 0s H 0 0 25.0000000 1.37844 94.5% - 0s 0 0 1.40135 0 46 25.00000 1.40135 94.4% - 0s 0 0 1.43340 0 47 25.00000 1.43340 94.3% - 0s 0 0 1.44735 0 47 25.00000 1.44735 94.2% - 0s H 0 0 22.0000000 1.44735 93.4% - 0s 0 2 1.48946 0 47 22.00000 1.48946 93.2% - 0s * 288 70 13 21.0000000 9.93235 52.7% 19.8 0s * 318 78 11 20.0000000 10.09802 49.5% 19.9 0s * 384 77 12 19.0000000 11.04534 41.9% 19.1 0s Cutting planes: Gomory: 4 Mod-K: 5 Explored 773 nodes (13703 simplex iterations) in 0.39 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.900000000000e+01, best bound 1.900000000000e+01, gap 0.0%