Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:23:02 2012 Optimize a model with 447 rows, 438 columns and 1553 nonzeros Presolve removed 0 rows and 26 columns Presolve time: 0.00s Presolved: 447 rows, 412 columns, 1527 nonzeros Variable types: 0 continuous, 412 integer (411 binary) Found heuristic solution: objective 80.0000000 Root relaxation: objective 0.000000e+00, 271 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 0 171 80.00000 0.00000 100% - 0s H 0 0 62.0000000 0.00000 100% - 0s H 0 0 58.0000000 0.00000 100% - 0s H 0 0 55.0000000 0.00000 100% - 0s 0 0 0.23819 0 173 55.00000 0.23819 100% - 0s H 0 0 45.0000000 0.23819 99.5% - 0s H 0 0 37.0000000 0.23819 99.4% - 0s 0 0 0.79727 0 175 37.00000 0.79727 97.8% - 0s H 0 0 32.0000000 0.79727 97.5% - 0s 0 0 0.79727 0 175 32.00000 0.79727 97.5% - 0s H 0 0 27.0000000 0.79727 97.0% - 0s 0 2 0.79871 0 175 27.00000 0.79871 97.0% - 0s H 27 27 21.0000000 1.00000 95.2% 36.7 0s H 68 47 14.0000000 1.00000 92.9% 30.4 0s H 108 52 12.0000000 1.00000 91.7% 25.3 0s * 153 59 18 11.0000000 1.00000 90.9% 27.4 0s * 575 63 8 10.0000000 3.35714 66.4% 38.6 0s Cutting planes: Gomory: 3 Zero half: 3 Mod-K: 1 Explored 841 nodes (30550 simplex iterations) in 1.13 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%