Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:33:34 2012 Optimize a model with 573 rows, 516 columns and 1946 nonzeros Presolve removed 0 rows and 15 columns Presolve time: 0.00s Presolved: 573 rows, 501 columns, 1931 nonzeros Variable types: 0 continuous, 501 integer (500 binary) Found heuristic solution: objective 123.0000000 Root relaxation: objective 0.000000e+00, 278 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 0 205 123.00000 0.00000 100% - 0s H 0 0 98.0000000 0.00000 100% - 0s H 0 0 92.0000000 0.00000 100% - 0s H 0 0 88.0000000 0.00000 100% - 0s 0 0 0.40101 0 206 88.00000 0.40101 100% - 0s H 0 0 84.0000000 0.40101 100% - 0s 0 0 1.00000 0 208 84.00000 1.00000 98.8% - 0s H 0 0 76.0000000 1.00000 98.7% - 0s 0 0 1.26172 0 209 76.00000 1.26172 98.3% - 0s H 0 0 66.0000000 1.26172 98.1% - 0s H 0 0 60.0000000 1.26172 97.9% - 0s 0 0 1.26273 0 210 60.00000 1.26273 97.9% - 0s H 0 0 58.0000000 1.26273 97.8% - 0s H 0 0 55.0000000 1.26273 97.7% - 0s H 0 0 52.0000000 1.26273 97.6% - 0s 0 2 1.26296 0 210 52.00000 1.26296 97.6% - 0s H 54 54 23.0000000 1.27733 94.4% 35.0 0s * 94 69 26 22.0000000 1.37745 93.7% 34.8 0s 2895 482 cutoff 26 22.00000 15.22314 30.8% 29.0 5s Explored 6411 nodes (162846 simplex iterations) in 9.36 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.200000000000e+01, best bound 2.200000000000e+01, gap 0.0%