Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:36:47 2013 Optimize a model with 2600 rows, 105900 columns and 242200 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.32s Presolved: 2500 rows, 105800 columns, 237100 nonzeros Variable types: 105200 continuous, 600 integer (600 binary) Root relaxation: objective 9.481640e+05, 6122 iterations, 0.49 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 948163.962 0 12 - 948163.962 - - 1s 0 0 948290.840 0 12 - 948290.840 - - 1s 0 0 948335.625 0 14 - 948335.625 - - 1s 0 0 948343.307 0 14 - 948343.307 - - 2s 0 0 948349.100 0 14 - 948349.100 - - 2s 0 0 948358.705 0 14 - 948358.705 - - 2s 0 0 948359.323 0 14 - 948359.323 - - 2s 0 0 948361.105 0 14 - 948361.105 - - 3s 0 0 948361.890 0 14 - 948361.890 - - 3s 0 0 948362.567 0 14 - 948362.567 - - 3s 0 0 948363.447 0 14 - 948363.447 - - 4s 0 0 948363.447 0 14 - 948363.447 - - 5s H 0 0 1018753.4844 948363.447 6.91% - 6s 0 2 948363.544 0 14 1018753.48 948363.544 6.91% - 6s 11 13 952567.384 8 6 1018753.48 948490.433 6.90% 286 10s 24 26 951763.085 20 4 1018753.48 948490.433 6.90% 227 15s H 27 17 952063.03402 948490.433 0.38% 209 15s 60 35 951952.495 25 6 952063.034 948499.303 0.37% 158 20s 77 38 951323.179 5 3 952063.034 948838.326 0.34% 210 25s H 109 40 951732.17958 948838.326 0.30% 163 29s 113 43 951624.148 35 2 951732.180 948838.326 0.30% 158 30s * 119 41 40 951698.64865 948838.326 0.30% 151 30s * 120 40 40 951697.59181 948838.326 0.30% 149 30s H 136 46 951689.14336 948858.236 0.30% 156 32s H 164 57 951686.31087 948858.236 0.30% 132 33s 178 64 950966.737 15 3 951686.311 948975.526 0.28% 130 35s * 210 83 47 951661.72530 948975.526 0.28% 114 36s H 218 13 950681.11486 948975.526 0.18% 112 36s 314 63 950467.024 103 1 950681.115 949015.604 0.18% 80.6 40s H 326 59 950500.51448 949015.604 0.16% 77.7 40s 383 59 950085.998 16 6 950500.514 949517.090 0.10% 78.7 45s * 477 83 31 950276.23626 949722.821 0.06% 69.4 48s 531 58 950168.837 20 3 950276.236 949897.358 0.04% 64.6 50s Cutting planes: Flow cover: 33 Explored 614 nodes (44595 simplex iterations) in 52.45 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.502762362556e+05, best bound 9.501815568427e+05, gap 0.0100%