Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:41:02 2012 Optimize a model with 495 rows, 467 columns and 1702 nonzeros Presolve removed 0 rows and 15 columns Presolve time: 0.00s Presolved: 495 rows, 452 columns, 1687 nonzeros Variable types: 0 continuous, 452 integer (451 binary) Found heuristic solution: objective 99.0000000 Root relaxation: objective 0.000000e+00, 249 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 99.00000 0.00000 100% - 0s H 0 0 77.0000000 0.00000 100% - 0s H 0 0 73.0000000 0.00000 100% - 0s H 0 0 69.0000000 0.00000 100% - 0s 0 0 0.41092 0 199 69.00000 0.41092 99.4% - 0s H 0 0 58.0000000 0.41092 99.3% - 0s 0 0 1.00000 0 200 58.00000 1.00000 98.3% - 0s H 0 0 57.0000000 1.00000 98.2% - 0s 0 0 1.00000 0 201 57.00000 1.00000 98.2% - 0s 0 0 1.00000 0 198 57.00000 1.00000 98.2% - 0s 0 2 1.00000 0 198 57.00000 1.00000 98.2% - 0s * 39 32 21 16.0000000 2.39069 85.1% 36.8 0s * 72 42 22 15.0000000 2.40929 83.9% 33.2 0s * 90 47 13 14.0000000 3.89350 72.2% 35.6 0s * 207 57 23 13.0000000 5.00000 61.5% 31.4 0s * 252 37 10 12.0000000 5.60606 53.3% 32.1 0s Cutting planes: Gomory: 2 Explored 339 nodes (13475 simplex iterations) in 0.61 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.200000000000e+01, best bound 1.200000000000e+01, gap 0.0%