Gurobi 5.0.1 (linux64) logging started Sat Dec 8 02:35:15 2012 Optimize a model with 285 rows, 270 columns and 889 nonzeros Presolve removed 28 rows and 17 columns Presolve time: 0.00s Presolved: 257 rows, 253 columns, 821 nonzeros Variable types: 169 continuous, 84 integer (84 binary) Root relaxation: objective 2.458522e+04, 126 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 24585.2211 0 39 - 24585.2211 - - 0s H 0 0 38536.000000 24585.2211 36.2% - 0s 0 0 29022.9604 0 21 38536.0000 29022.9604 24.7% - 0s 0 0 29173.2610 0 9 38536.0000 29173.2610 24.3% - 0s 0 0 29173.3313 0 3 38536.0000 29173.3313 24.3% - 0s 0 0 29177.7874 0 4 38536.0000 29177.7874 24.3% - 0s H 0 0 30152.000000 29177.7874 3.23% - 0s 0 2 29178.1502 0 4 30152.0000 29178.1502 3.23% - 0s * 9 9 7 29934.000000 29192.3643 2.48% 3.8 0s * 11 6 9 29796.000000 29192.3643 2.03% 3.4 0s H 27 7 29717.000000 29313.6529 1.36% 3.6 0s * 33 10 10 29715.000000 29313.6529 1.35% 3.5 0s * 57 14 13 29694.000000 29387.4738 1.03% 3.3 0s * 61 3 9 29546.000000 29520.2224 0.09% 3.2 0s Cutting planes: Gomory: 6 Cover: 1 Flow cover: 26 Flow path: 23 Explored 66 nodes (411 simplex iterations) in 0.35 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.954600000000e+04, best bound 2.954600000000e+04, gap 0.0%