Gurobi 5.0.1 (linux64) logging started Sun Nov 18 07:47:07 2012 Optimize a model with 601 rows, 532 columns and 2032 nonzeros Presolve removed 0 rows and 14 columns Presolve time: 0.00s Presolved: 601 rows, 518 columns, 2018 nonzeros Variable types: 0 continuous, 518 integer (517 binary) Found heuristic solution: objective 103.0000000 Root relaxation: objective 0.000000e+00, 313 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 213 103.00000 0.00000 100% - 0s H 0 0 75.0000000 0.00000 100% - 0s 0 0 0.58123 0 214 75.00000 0.58123 99.2% - 0s H 0 0 64.0000000 0.58123 99.1% - 0s 0 0 1.28590 0 216 64.00000 1.28590 98.0% - 0s H 0 0 58.0000000 1.28590 97.8% - 0s 0 0 1.54124 0 217 58.00000 1.54124 97.3% - 0s 0 0 1.54316 0 219 58.00000 1.54316 97.3% - 0s 0 0 1.54316 0 218 58.00000 1.54316 97.3% - 0s H 0 0 55.0000000 1.54316 97.2% - 0s 0 2 1.54326 0 218 55.00000 1.54326 97.2% - 0s * 46 44 25 26.0000000 1.72663 93.4% 42.2 0s H 572 299 24.0000000 3.39143 85.9% 45.7 1s 2413 719 cutoff 23 24.00000 14.45000 39.8% 29.9 5s 5753 1424 infeasible 24 24.00000 17.00000 29.2% 24.1 10s 9155 1806 cutoff 26 24.00000 18.26437 23.9% 22.7 15s 12804 1786 cutoff 21 24.00000 19.00000 20.8% 22.2 20s 16584 1412 21.50602 20 203 24.00000 19.83333 17.4% 21.6 25s 20296 673 cutoff 26 24.00000 21.12500 12.0% 22.1 30s Explored 21650 nodes (471155 simplex iterations) in 31.37 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.400000000000e+01, best bound 2.400000000000e+01, gap 0.0%