Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:25:26 2012 Optimize a model with 257 rows, 274 columns and 914 nonzeros Presolve removed 0 rows and 26 columns Presolve time: 0.00s Presolved: 257 rows, 248 columns, 888 nonzeros Variable types: 0 continuous, 248 integer (247 binary) Found heuristic solution: objective 41.0000000 Root relaxation: objective 0.000000e+00, 152 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 0 108 41.00000 0.00000 100% - 0s H 0 0 33.0000000 0.00000 100% - 0s H 0 0 32.0000000 0.00000 100% - 0s H 0 0 29.0000000 0.00000 100% - 0s 0 0 0.13651 0 110 29.00000 0.13651 100% - 0s H 0 0 24.0000000 0.13651 99.4% - 0s H 0 0 23.0000000 0.13651 99.4% - 0s H 0 0 21.0000000 0.13651 99.3% - 0s 0 0 0.72384 0 117 21.00000 0.72384 96.6% - 0s H 0 0 18.0000000 0.72384 96.0% - 0s 0 0 0.72384 0 117 18.00000 0.72384 96.0% - 0s 0 2 0.72841 0 117 18.00000 0.72841 96.0% - 0s H 27 14 5.0000000 1.00000 80.0% 25.6 0s * 38 12 7 4.0000000 1.00000 75.0% 26.1 0s Cutting planes: Gomory: 4 Mod-K: 2 Explored 76 nodes (2570 simplex iterations) in 0.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%