Gurobi 5.0.1 (linux64) logging started Wed Apr 24 13:06:36 2013 Optimize a model with 2530 rows, 529230 columns and 1058230 nonzeros Presolve time: 4.23s Presolved: 2530 rows, 529230 columns, 1058230 nonzeros Variable types: 529000 continuous, 230 integer (230 binary) Root relaxation: objective 5.404502e+05, 15532 iterations, 2.50 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 540450.220 0 7 - 540450.220 - - 7s H 0 0 597106.00000 540450.220 9.49% - 9s 0 0 540776.417 0 6 597106.000 540776.417 9.43% - 12s 0 0 540900.250 0 5 597106.000 540900.250 9.41% - 14s 0 0 540933.637 0 6 597106.000 540933.637 9.41% - 16s H 0 0 589740.00000 540933.637 8.28% - 17s 0 0 540961.082 0 7 589740.000 540961.082 8.27% - 18s 0 0 540970.539 0 6 589740.000 540970.539 8.27% - 20s 0 0 540989.254 0 6 589740.000 540989.254 8.27% - 22s 0 0 540996.359 0 5 589740.000 540996.359 8.27% - 23s 0 0 541003.478 0 5 589740.000 541003.478 8.26% - 25s H 0 0 589443.00000 541003.478 8.22% - 25s 0 0 541003.708 0 5 589443.000 541003.708 8.22% - 26s H 0 0 589329.00000 541003.708 8.20% - 26s 0 0 541003.708 0 5 589329.000 541003.708 8.20% - 28s H 0 0 589244.00000 541003.708 8.19% - 28s 0 0 541003.978 0 5 589244.000 541003.978 8.19% - 29s H 0 0 589187.00000 541003.978 8.18% - 33s H 0 0 578501.00000 541003.978 6.48% - 37s 0 2 541009.375 0 5 578501.000 541009.375 6.48% - 37s H 2 2 575235.36968 541051.320 5.94% 172 39s H 3 3 561208.72277 541061.750 3.59% 155 40s H 4 4 557958.45711 541081.462 3.02% 184 41s H 6 6 555246.82353 541111.536 2.55% 195 42s H 7 7 550542.00000 541154.110 1.71% 218 45s 12 14 541443.419 11 3 550542.000 541154.110 1.71% 268 50s H 13 13 544217.00000 541154.110 0.56% 247 50s H 22 20 543211.00000 541154.110 0.38% 161 52s H 25 20 542477.00000 541154.110 0.24% 147 53s H 30 20 542171.00000 541154.110 0.19% 127 54s H 31 20 542019.00000 541154.110 0.16% 124 54s * 32 16 31 541819.00000 541154.110 0.12% 121 54s 34 15 541287.266 1 2 541819.000 541233.966 0.11% 131 55s 51 23 541414.178 4 3 541819.000 541237.431 0.11% 146 60s H 54 19 541712.00000 541237.431 0.09% 145 61s H 56 20 541639.00000 541237.431 0.07% 141 61s * 58 18 10 541611.00000 541237.431 0.07% 139 62s 73 13 cutoff 12 541611.000 541474.316 0.03% 142 65s Cutting planes: Implied bound: 221 Flow cover: 10 Explored 87 nodes (28578 simplex iterations) in 66.93 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.416110000000e+05, best bound 5.415686000000e+05, gap 0.0078%