Gurobi 5.0.1 (linux64) logging started Sun Nov 18 06:11:10 2012 Optimize a model with 487 rows, 451 columns and 1666 nonzeros Presolve removed 0 rows and 23 columns Presolve time: 0.00s Presolved: 487 rows, 428 columns, 1643 nonzeros Variable types: 0 continuous, 428 integer (427 binary) Found heuristic solution: objective 95.0000000 Root relaxation: objective 0.000000e+00, 247 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 0 180 95.00000 0.00000 100% - 0s H 0 0 84.0000000 0.00000 100% - 0s H 0 0 75.0000000 0.00000 100% - 0s H 0 0 71.0000000 0.00000 100% - 0s 0 0 0.42222 0 181 71.00000 0.42222 99.4% - 0s H 0 0 67.0000000 0.42222 99.4% - 0s 0 0 1.00000 0 184 67.00000 1.00000 98.5% - 0s H 0 0 64.0000000 1.00000 98.4% - 0s 0 0 1.00000 0 182 64.00000 1.00000 98.4% - 0s H 0 0 61.0000000 1.00000 98.4% - 0s 0 0 1.00000 0 185 61.00000 1.00000 98.4% - 0s 0 0 1.00000 0 184 61.00000 1.00000 98.4% - 0s H 0 0 60.0000000 1.00000 98.3% - 0s H 0 0 58.0000000 1.00000 98.3% - 0s 0 2 1.00000 0 180 58.00000 1.00000 98.3% - 0s H 27 27 50.0000000 1.40646 97.2% 59.4 0s * 39 37 21 18.0000000 1.40646 92.2% 49.7 0s * 91 58 13 17.0000000 2.96891 82.5% 46.1 0s * 142 72 16 16.0000000 4.23966 73.5% 41.1 0s Cutting planes: Gomory: 2 Mod-K: 1 Explored 1070 nodes (32435 simplex iterations) in 1.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.600000000000e+01, best bound 1.600000000000e+01, gap 0.0%