Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:12:24 2012 Optimize a model with 459 rows, 438 columns and 1583 nonzeros Presolve removed 0 rows and 15 columns Presolve time: 0.00s Presolved: 459 rows, 423 columns, 1568 nonzeros Variable types: 0 continuous, 423 integer (422 binary) Found heuristic solution: objective 95.0000000 Root relaxation: objective 0.000000e+00, 254 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 0 185 95.00000 0.00000 100% - 0s H 0 0 54.0000000 0.00000 100% - 0s H 0 0 50.0000000 0.00000 100% - 0s 0 0 0.34050 0 187 50.00000 0.34050 99.3% - 0s H 0 0 41.0000000 0.34050 99.2% - 0s 0 0 0.87411 0 191 41.00000 0.87411 97.9% - 0s H 0 0 33.0000000 0.87411 97.4% - 0s H 0 0 25.0000000 0.87411 96.5% - 0s 0 0 0.87411 0 193 25.00000 0.87411 96.5% - 0s 0 0 0.87411 0 190 25.00000 0.87411 96.5% - 0s 0 2 0.87554 0 190 25.00000 0.87554 96.5% - 0s H 27 27 22.0000000 1.00000 95.5% 39.9 0s * 42 32 26 12.0000000 1.00000 91.7% 30.1 0s H 192 63 11.0000000 4.10256 62.7% 34.8 0s Cutting planes: Gomory: 4 Zero half: 10 Explored 397 nodes (13086 simplex iterations) in 0.61 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.100000000000e+01, best bound 1.100000000000e+01, gap 0.0%