Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:21:08 2012 Optimize a model with 539 rows, 497 columns and 1842 nonzeros Presolve removed 0 rows and 25 columns Presolve time: 0.00s Presolved: 539 rows, 472 columns, 1817 nonzeros Variable types: 0 continuous, 472 integer (471 binary) Found heuristic solution: objective 104.0000000 Root relaxation: objective 0.000000e+00, 274 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 0 198 104.00000 0.00000 100% - 0s H 0 0 79.0000000 0.00000 100% - 0s H 0 0 63.0000000 0.00000 100% - 0s H 0 0 47.0000000 0.00000 100% - 0s 0 0 0.27498 0 200 47.00000 0.27498 99.4% - 0s H 0 0 45.0000000 0.27498 99.4% - 0s 0 0 0.81243 0 201 45.00000 0.81243 98.2% - 0s H 0 0 40.0000000 0.81243 98.0% - 0s 0 0 0.81296 0 203 40.00000 0.81296 98.0% - 0s 0 0 0.81296 0 203 40.00000 0.81296 98.0% - 0s H 0 0 39.0000000 0.81296 97.9% - 0s H 0 0 37.0000000 0.81296 97.8% - 0s 0 2 0.81824 0 203 37.00000 0.81824 97.8% - 0s H 27 27 33.0000000 1.00000 97.0% 37.1 0s H 54 54 32.0000000 1.00000 96.9% 28.1 0s * 89 80 53 28.0000000 1.00000 96.4% 23.1 0s H 149 114 26.0000000 1.00000 96.2% 24.9 0s H 189 127 24.0000000 1.00000 95.8% 26.2 0s H 451 299 23.0000000 3.02065 86.9% 25.8 0s H 659 403 19.0000000 4.87023 74.4% 28.7 1s 2955 310 cutoff 21 19.00000 13.80769 27.3% 27.7 5s H 3251 238 18.0000000 14.11215 21.6% 27.3 5s Explored 3732 nodes (100438 simplex iterations) in 6.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%