Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:01:00 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 932.0000000 Root relaxation: objective 2.730000e+02, 16 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 273.00000 0 11 932.00000 273.00000 70.7% - 0s 0 0 406.32865 0 6 932.00000 406.32865 56.4% - 0s 0 0 420.19927 0 10 932.00000 420.19927 54.9% - 0s 0 0 424.64023 0 11 932.00000 424.64023 54.4% - 0s 0 0 424.64023 0 11 932.00000 424.64023 54.4% - 0s 0 2 441.25491 0 10 932.00000 441.25491 52.7% - 0s * 19 17 12 795.0000000 455.71429 42.7% 2.9 0s * 37 22 11 786.0000000 456.00000 42.0% 2.4 0s * 73 38 8 725.0000000 480.25491 33.8% 3.2 0s * 77 31 9 716.0000000 480.25491 32.9% 3.1 0s * 97 38 9 713.0000000 529.50000 25.7% 3.3 0s * 109 35 8 697.0000000 543.82353 22.0% 3.4 0s Cutting planes: Implied bound: 11 MIR: 30 Explored 201 nodes (628 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.970000000000e+02, best bound 6.970000000000e+02, gap 0.0%