Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:57:18 2013 Optimize a model with 726 rows, 43626 columns and 87186 nonzeros Presolve time: 0.06s Presolved: 726 rows, 43626 columns, 87186 nonzeros Variable types: 43560 continuous, 66 integer (66 binary) Root relaxation: objective 6.331193e+04, 1479 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 63311.9295 0 6 - 63311.9295 - - 0s H 0 0 66118.000000 63311.9295 4.24% - 0s H 0 0 65747.000000 63311.9295 3.70% - 0s H 0 0 64518.000000 63311.9295 1.87% - 0s 0 0 63597.5861 0 3 64518.0000 63597.5861 1.43% - 0s 0 0 63638.2883 0 4 64518.0000 63638.2883 1.36% - 0s 0 0 63643.9561 0 3 64518.0000 63643.9561 1.35% - 0s 0 0 63643.9901 0 3 64518.0000 63643.9901 1.35% - 0s 0 0 63643.9901 0 3 64518.0000 63643.9901 1.35% - 0s 0 0 63643.9901 0 6 64518.0000 63643.9901 1.35% - 0s 0 0 63643.9901 0 3 64518.0000 63643.9901 1.35% - 1s 0 0 63643.9901 0 3 64518.0000 63643.9901 1.35% - 1s 0 0 63643.9901 0 3 64518.0000 63643.9901 1.35% - 1s 0 0 63643.9901 0 3 64518.0000 63643.9901 1.35% - 1s 0 0 63643.9901 0 3 64518.0000 63643.9901 1.35% - 1s 0 0 63643.9901 0 3 64518.0000 63643.9901 1.35% - 1s 0 2 63644.3646 0 3 64518.0000 63644.3646 1.35% - 1s * 12 11 9 64231.000000 63981.5588 0.39% 58.4 1s H 18 3 64217.000000 64113.2500 0.16% 56.9 1s H 19 3 64193.804124 64114.7766 0.12% 54.6 1s H 20 4 64190.000000 64115.3333 0.12% 51.9 1s * 21 3 7 64122.000000 64121.0000 0.00% 51.4 1s Cutting planes: Implied bound: 106 Flow cover: 4 Explored 22 nodes (4426 simplex iterations) in 1.85 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.412200000000e+04, best bound 6.412100000000e+04, gap 0.0016%