Gurobi 5.0.1 (linux64) logging started Wed Apr 24 13:15:31 2013 Optimize a model with 2530 rows, 529230 columns and 1058230 nonzeros Presolve time: 3.23s Presolved: 2530 rows, 529230 columns, 1058230 nonzeros Variable types: 529000 continuous, 230 integer (230 binary) Root relaxation: objective 4.842628e+05, 15042 iterations, 2.37 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 484262.841 0 7 - 484262.841 - - 6s H 0 0 535434.00000 484262.841 9.56% - 8s 0 0 484828.243 0 5 535434.000 484828.243 9.45% - 12s H 0 0 532452.79551 484828.243 8.94% - 12s H 0 0 531567.00000 484828.243 8.79% - 13s 0 0 484916.798 0 4 531567.000 484916.798 8.78% - 14s H 0 0 513271.73864 484916.798 5.52% - 14s H 0 0 512473.00000 484916.798 5.38% - 15s 0 0 484933.222 0 3 512473.000 484933.222 5.37% - 16s 0 0 484933.222 0 3 512473.000 484933.222 5.37% - 18s H 0 0 511848.00000 484933.222 5.26% - 18s 0 0 484933.268 0 5 511848.000 484933.268 5.26% - 19s 0 0 484933.346 0 4 511848.000 484933.346 5.26% - 21s H 0 0 511831.00000 484933.346 5.26% - 21s 0 0 484934.103 0 4 511831.000 484934.103 5.26% - 22s 0 0 484934.103 0 4 511831.000 484934.103 5.26% - 23s 0 0 484934.321 0 3 511831.000 484934.321 5.25% - 25s 0 0 484936.994 0 3 511831.000 484936.994 5.25% - 26s 0 0 484937.160 0 4 511831.000 484937.160 5.25% - 27s H 0 0 511739.00000 484937.160 5.24% - 28s 0 0 484937.212 0 3 511739.000 484937.212 5.24% - 29s 0 0 484937.212 0 3 511739.000 484937.212 5.24% - 30s H 0 0 507110.00000 484937.212 4.37% - 31s H 0 0 488748.00000 484937.212 0.78% - 31s 0 0 484938.159 0 3 488748.000 484938.159 0.78% - 32s 0 0 484938.159 0 7 488748.000 484938.159 0.78% - 36s 0 0 484938.159 0 5 488748.000 484938.159 0.78% - 38s 0 0 484938.159 0 4 488748.000 484938.159 0.78% - 39s 0 0 484938.159 0 3 488748.000 484938.159 0.78% - 40s 0 0 484938.159 0 3 488748.000 484938.159 0.78% - 41s 0 0 484938.159 0 5 488748.000 484938.159 0.78% - 42s 0 0 484938.159 0 4 488748.000 484938.159 0.78% - 42s 0 0 484938.159 0 3 488748.000 484938.159 0.78% - 43s 0 0 484938.159 0 3 488748.000 484938.159 0.78% - 44s 0 0 484938.159 0 3 488748.000 484938.159 0.78% - 45s 0 0 484938.159 0 3 488748.000 484938.159 0.78% - 45s 0 0 484938.159 0 3 488748.000 484938.159 0.78% - 46s 0 2 484972.185 0 3 488748.000 484972.185 0.77% - 48s 1 4 485133.513 1 2 488748.000 485133.513 0.74% 547 50s H 2 2 487767.07500 485133.513 0.54% 274 50s H 4 4 487631.00000 485152.975 0.51% 215 51s H 5 5 487541.00000 485196.101 0.48% 190 52s H 6 6 487517.00000 485196.101 0.48% 162 52s H 9 9 487491.00000 485196.101 0.47% 151 53s H 11 11 486956.00000 485196.101 0.36% 134 54s 12 13 485412.779 10 2 486956.000 485196.101 0.36% 152 55s H 17 15 486479.00000 485196.101 0.26% 145 57s H 18 16 486184.00000 485196.101 0.20% 146 57s * 22 16 18 486091.00000 485196.101 0.18% 131 58s * 32 14 10 485590.00000 485198.190 0.08% 116 59s 34 10 485533.744 1 6 485590.000 485203.184 0.08% 137 60s 59 15 485281.179 6 2 485590.000 485270.978 0.07% 128 65s 94 12 485399.711 5 2 485590.000 485304.569 0.06% 119 70s * 120 8 12 485550.00000 485350.742 0.04% 106 72s Cutting planes: Implied bound: 233 Flow cover: 2 Explored 127 nodes (40548 simplex iterations) in 73.25 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.855500000000e+05, best bound 4.855178823529e+05, gap 0.0066%