Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:24:15 2012 Optimize a model with 479 rows, 455 columns and 1650 nonzeros Presolve removed 0 rows and 17 columns Presolve time: 0.00s Presolved: 479 rows, 438 columns, 1633 nonzeros Variable types: 0 continuous, 438 integer (437 binary) Found heuristic solution: objective 91.0000000 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 0 189 91.00000 0.00000 100% - 0s H 0 0 73.0000000 0.00000 100% - 0s H 0 0 68.0000000 0.00000 100% - 0s 0 0 0.41506 0 190 68.00000 0.41506 99.4% - 0s H 0 0 60.0000000 0.41506 99.3% - 0s 0 0 1.00000 0 194 60.00000 1.00000 98.3% - 0s H 0 0 54.0000000 1.00000 98.1% - 0s 0 0 1.00000 0 191 54.00000 1.00000 98.1% - 0s H 0 0 48.0000000 1.00000 97.9% - 0s 0 0 1.00000 0 193 48.00000 1.00000 97.9% - 0s 0 0 1.00000 0 191 48.00000 1.00000 97.9% - 0s H 0 0 43.0000000 1.00000 97.7% - 0s H 0 0 42.0000000 1.00000 97.6% - 0s H 0 0 33.0000000 1.00000 97.0% - 0s H 0 0 32.0000000 1.00000 96.9% - 0s 0 2 1.00000 0 189 32.00000 1.00000 96.9% - 0s H 27 27 28.0000000 2.06340 92.6% 47.2 0s * 95 28 57 15.0000000 2.06340 86.2% 31.6 0s * 147 40 13 14.0000000 3.73913 73.3% 31.6 0s * 304 31 12 13.0000000 8.80952 32.2% 36.0 0s Cutting planes: Gomory: 3 Zero half: 1 Explored 377 nodes (14443 simplex iterations) in 0.64 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.300000000000e+01, best bound 1.300000000000e+01, gap 0.0%