Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:00:59 2013 Optimize a model with 63 rows, 49 columns and 168 nonzeros Presolve removed 21 rows and 21 columns Presolve time: 0.00s Presolved: 42 rows, 28 columns, 126 nonzeros Variable types: 7 continuous, 21 integer (21 binary) Found heuristic solution: objective 1490.0000000 Root relaxation: objective 4.270000e+02, 18 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 427.00000 0 18 1490.00000 427.00000 71.3% - 0s 0 0 600.32897 0 11 1490.00000 600.32897 59.7% - 0s 0 0 612.80101 0 18 1490.00000 612.80101 58.9% - 0s 0 0 613.60137 0 17 1490.00000 613.60137 58.8% - 0s 0 0 613.72378 0 18 1490.00000 613.72378 58.8% - 0s 0 0 613.72378 0 18 1490.00000 613.72378 58.8% - 0s H 0 0 1427.0000000 613.72378 57.0% - 0s H 0 0 1240.0000000 613.72378 50.5% - 0s H 0 0 1232.0000000 613.72378 50.2% - 0s 0 2 625.52385 0 18 1232.00000 625.52385 49.2% - 0s * 16 16 12 1189.0000000 674.64874 43.3% 5.4 0s * 74 46 10 1132.0000000 734.00000 35.2% 4.3 0s * 79 41 12 1131.0000000 734.00000 35.1% 4.1 0s Cutting planes: Gomory: 2 Implied bound: 9 MIR: 46 Explored 732 nodes (2167 simplex iterations) in 0.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.131000000000e+03, best bound 1.131000000000e+03, gap 0.0%