Gurobi 5.0.1 (linux64) logging started Sun Nov 18 09:14:03 2012 Optimize a model with 569 rows, 525 columns and 1945 nonzeros Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 569 rows, 502 columns, 1922 nonzeros Variable types: 0 continuous, 502 integer (501 binary) Found heuristic solution: objective 114.0000000 Root relaxation: objective 0.000000e+00, 299 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 0 215 114.00000 0.00000 100% - 0s H 0 0 69.0000000 0.00000 100% - 0s 0 0 0.45902 0 216 69.00000 0.45902 99.3% - 0s H 0 0 56.0000000 0.45902 99.2% - 0s 0 0 1.00000 0 220 56.00000 1.00000 98.2% - 0s H 0 0 51.0000000 1.00000 98.0% - 0s 0 0 1.00000 0 220 51.00000 1.00000 98.0% - 0s 0 0 1.00000 0 215 51.00000 1.00000 98.0% - 0s 0 2 1.00000 0 215 51.00000 1.00000 98.0% - 0s H 27 27 45.0000000 3.82006 91.5% 54.2 0s * 51 45 27 22.0000000 3.82006 82.6% 40.1 0s * 131 70 14 18.0000000 6.40202 64.4% 38.6 0s Cutting planes: Gomory: 3 Explored 773 nodes (30078 simplex iterations) in 1.45 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%