Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:57:08 2012 Optimize a model with 549 rows, 498 columns and 1868 nonzeros Presolve removed 0 rows and 15 columns Presolve time: 0.00s Presolved: 549 rows, 483 columns, 1853 nonzeros Variable types: 0 continuous, 483 integer (482 binary) Found heuristic solution: objective 105.0000000 Root relaxation: objective 0.000000e+00, 283 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 0 204 105.00000 0.00000 100% - 0s H 0 0 84.0000000 0.00000 100% - 0s H 0 0 75.0000000 0.00000 100% - 0s 0 0 0.45098 0 205 75.00000 0.45098 99.4% - 0s H 0 0 65.0000000 0.45098 99.3% - 0s 0 0 1.03885 0 207 65.00000 1.03885 98.4% - 0s H 0 0 64.0000000 1.03885 98.4% - 0s H 0 0 60.0000000 1.03885 98.3% - 0s 0 0 1.38665 0 209 60.00000 1.38665 97.7% - 0s H 0 0 53.0000000 1.38665 97.4% - 0s 0 0 1.38963 0 210 53.00000 1.38963 97.4% - 0s 0 0 1.38963 0 210 53.00000 1.38963 97.4% - 0s H 0 0 44.0000000 1.38963 96.8% - 0s 0 2 1.39995 0 210 44.00000 1.39995 96.8% - 0s H 54 43 26.0000000 2.57546 90.1% 28.7 0s H 81 54 23.0000000 2.71076 88.2% 27.4 0s * 185 101 26 22.0000000 5.45070 75.2% 32.0 0s * 515 156 26 21.0000000 9.69565 53.8% 30.2 0s Cutting planes: Gomory: 4 Mod-K: 2 Explored 1729 nodes (55788 simplex iterations) in 2.87 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%