Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:11:03 2013 Optimize a model with 469 rows, 196 columns and 1470 nonzeros Presolve removed 131 rows and 100 columns Presolve time: 0.00s Presolved: 338 rows, 96 columns, 1102 nonzeros Variable types: 8 continuous, 88 integer (88 binary) Found heuristic solution: objective 2120.0000000 Root relaxation: objective 1.825429e+03, 47 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 1825.42857 0 9 2120.00000 1825.42857 13.9% - 0s H 0 0 1925.0000000 1825.42857 5.17% - 0s 0 0 1826.00000 0 13 1925.00000 1826.00000 5.14% - 0s H 0 0 1858.0000000 1826.00000 1.72% - 0s H 0 0 1852.0000000 1826.00000 1.40% - 0s H 0 0 1849.0000000 1826.00000 1.24% - 0s 0 0 1826.00000 0 18 1849.00000 1826.00000 1.24% - 0s H 0 0 1838.0000000 1826.00000 0.65% - 0s 0 0 1826.00000 0 15 1838.00000 1826.00000 0.65% - 0s 0 0 1826.00000 0 11 1838.00000 1826.00000 0.65% - 0s 0 0 1826.00000 0 16 1838.00000 1826.00000 0.65% - 0s 0 0 1826.00000 0 21 1838.00000 1826.00000 0.65% - 0s 0 0 1826.00000 0 17 1838.00000 1826.00000 0.65% - 0s H 0 0 1836.0000000 1826.00000 0.54% - 0s 0 0 1826.00000 0 21 1836.00000 1826.00000 0.54% - 0s 0 0 1826.00000 0 17 1836.00000 1826.00000 0.54% - 0s 0 2 1826.00000 0 17 1836.00000 1826.00000 0.54% - 0s H 62 29 1832.0000000 1826.00000 0.33% 8.4 0s Cutting planes: Gomory: 2 Cover: 1 Implied bound: 1 MIR: 29 Zero half: 8 Explored 332 nodes (3817 simplex iterations) in 0.12 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.832000000000e+03, best bound 1.832000000000e+03, gap 0.0%