Gurobi 5.0.1 (linux64) logging started Wed Dec 26 01:52:42 2012 Optimize a model with 3402 rows, 3280 columns and 14200 nonzeros Presolve removed 550 rows and 80 columns Presolve time: 0.10s Presolved: 2852 rows, 3200 columns, 13450 nonzeros Variable types: 1560 continuous, 1640 integer (1640 binary) Root relaxation: objective 2.779989e+02, 2883 iterations, 0.14 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 277.99891 0 82 - 277.99891 - - 0s 0 0 285.23809 0 84 - 285.23809 - - 0s 0 0 286.64440 0 86 - 286.64440 - - 0s 0 0 291.89816 0 88 - 291.89816 - - 0s 0 0 292.77718 0 90 - 292.77718 - - 0s 0 0 292.78247 0 92 - 292.78247 - - 0s 0 0 292.85432 0 91 - 292.85432 - - 0s 0 0 292.90522 0 92 - 292.90522 - - 0s 0 0 292.90522 0 92 - 292.90522 - - 1s 0 2 292.96112 0 92 - 292.96112 - - 1s 176 149 296.31959 1 89 - 295.56620 - 74.1 5s 412 310 320.80391 9 71 - 304.92901 - 126 10s 611 475 336.99389 20 92 - 305.77736 - 128 15s 622 483 320.52600 14 96 - 305.77736 - 138 20s 709 518 402.27622 58 59 - 309.38477 - 156 25s 849 554 infeasible 67 - 309.48824 - 181 30s 1039 627 infeasible 164 - 309.48824 - 191 35s 1236 679 463.43495 98 54 - 310.02559 - 200 40s 1525 834 infeasible 238 - 310.02689 - 184 45s * 1581 824 289 445.0000000 310.02689 30.3% 179 45s H 1721 846 444.0000000 311.41227 29.9% 183 49s 1737 857 441.56360 92 75 444.00000 311.41227 29.9% 184 50s H 1802 444 360.0000000 312.15895 13.3% 184 52s H 1829 344 344.0000000 312.20317 9.24% 184 52s H 1856 343 340.0000000 312.79264 8.00% 183 53s 1932 379 317.74104 27 93 340.00000 313.79620 7.71% 181 55s H 1996 382 337.0000000 313.97066 6.83% 179 56s 2166 396 319.63805 20 80 337.00000 315.98121 6.24% 180 60s 2215 409 323.76923 114 98 337.00000 316.23540 6.16% 180 65s 2222 414 316.23540 28 84 337.00000 316.23540 6.16% 183 70s 2329 405 334.30888 36 86 337.00000 316.23540 6.16% 183 75s 2545 409 327.40362 37 86 337.00000 317.66690 5.74% 182 80s 2979 359 320.97310 32 72 337.00000 320.97107 4.76% 173 85s 3738 363 328.70234 40 67 337.00000 324.20967 3.80% 154 90s 4961 373 329.11602 55 28 337.00000 328.73665 2.45% 130 95s Cutting planes: Gomory: 5 Cover: 19 Implied bound: 2 Flow cover: 40 GUB cover: 2 Zero half: 1 Explored 6091 nodes (694397 simplex iterations) in 98.15 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.370000000000e+02, best bound 3.370000000000e+02, gap 0.0%