Gurobi 5.0.1 (linux64) logging started Sat Dec 8 10:23:29 2012 Optimize a model with 1635 rows, 1620 columns and 5927 nonzeros Presolve removed 170 rows and 41 columns Presolve time: 0.01s Presolved: 1465 rows, 1579 columns, 5579 nonzeros Variable types: 1408 continuous, 171 integer (171 binary) Root relaxation: objective 6.462152e+04, 343 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 64621.5247 0 24 - 64621.5247 - - 0s 0 0 64755.8517 0 28 - 64755.8517 - - 0s 0 0 64880.1273 0 28 - 64880.1273 - - 0s 0 0 64894.8576 0 32 - 64894.8576 - - 0s 0 0 64909.1829 0 32 - 64909.1829 - - 0s 0 0 64913.8365 0 31 - 64913.8365 - - 0s 0 0 64914.0342 0 35 - 64914.0342 - - 0s 0 0 64914.0545 0 34 - 64914.0545 - - 0s H 0 0 83131.000000 64914.0545 21.9% - 0s 0 2 64914.3479 0 34 83131.0000 64914.3479 21.9% - 0s H 1550 971 74249.000000 65117.6542 12.3% 16.5 2s * 1551 946 98 73934.000000 65117.6542 11.9% 16.5 2s * 1553 921 97 73738.000000 65117.6542 11.7% 16.5 2s H 1556 893 73338.000000 65117.6542 11.2% 16.4 2s H 1989 908 69542.000000 65128.9069 6.35% 15.8 3s H 2016 730 68273.000000 65137.7032 4.59% 15.8 3s H 3437 1690 68053.000000 65270.2068 4.09% 14.9 4s 3509 1750 67503.5544 38 18 68053.0000 65273.2746 4.08% 14.9 5s H 5192 2093 67203.000000 65330.3808 2.79% 14.6 6s H 6563 2828 67096.000000 65407.2768 2.52% 14.3 7s 9024 4324 66611.5226 39 16 67096.0000 65482.6559 2.40% 13.9 10s 14648 7335 65950.0080 32 22 67096.0000 65592.2889 2.24% 13.7 15s 20406 10247 66519.0910 22 23 67096.0000 65669.1139 2.13% 13.6 20s *22144 6450 80 66512.000000 65686.3420 1.24% 13.6 21s 26592 7747 infeasible 28 66512.0000 65755.9435 1.14% 13.4 25s 32476 9402 66028.1226 31 18 66512.0000 65822.4711 1.04% 13.3 30s H38588 8573 66362.000000 65880.0931 0.73% 13.2 34s 38599 8574 66329.6432 29 19 66362.0000 65880.3134 0.73% 13.2 35s H40804 8473 66348.000000 65906.9798 0.66% 13.1 39s 40805 8474 66239.8297 37 34 66348.0000 65906.9798 0.66% 13.1 41s 40822 8487 65906.9798 24 60 66348.0000 65906.9798 0.66% 13.1 45s 41615 8616 65906.9798 25 67 66348.0000 65906.9798 0.66% 13.6 50s 42919 8621 66230.6016 35 48 66348.0000 65906.9798 0.66% 14.2 55s 44361 8330 66127.9893 50 42 66348.0000 65984.6497 0.55% 14.9 60s 45886 7935 66206.7038 43 52 66348.0000 66072.0998 0.42% 15.5 65s 47463 7308 66296.6799 34 50 66348.0000 66147.0509 0.30% 16.0 70s 49344 6097 66322.6805 53 33 66348.0000 66255.2953 0.14% 16.5 75s Cutting planes: Gomory: 2 Cover: 3 MIR: 293 Flow cover: 13 Zero half: 1 Explored 49927 nodes (823914 simplex iterations) in 76.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.634800000000e+04, best bound 6.634139876829e+04, gap 0.0099%