Gurobi 5.0.1 (linux64) logging started Thu Nov 29 00:37:57 2012 Optimize a model with 14763 rows, 29040 columns and 86760 nonzeros Presolve time: 0.13s Presolved: 14763 rows, 29040 columns, 86760 nonzeros Variable types: 14520 continuous, 14520 integer (14520 binary) Found heuristic solution: objective 23955.000000 Found heuristic solution: objective 5338.0000000 Found heuristic solution: objective 4115.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 28717 2.0250031e+03 1.036243e+02 0.000000e+00 5s 32241 2.0292227e+03 0.000000e+00 0.000000e+00 6s Root relaxation: objective 2.029223e+03, 32241 iterations, 6.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2029.22269 0 95 4115.00000 2029.22269 50.7% - 7s 0 0 2035.65206 0 153 4115.00000 2035.65206 50.5% - 9s 0 0 2096.10769 0 133 4115.00000 2096.10769 49.1% - 14s 0 0 2104.23626 0 119 4115.00000 2104.23626 48.9% - 16s H 0 0 2390.0000000 2104.23626 12.0% - 19s 0 0 2104.60224 0 133 2390.00000 2104.60224 11.9% - 19s 0 0 2104.60224 0 81 2390.00000 2104.60224 11.9% - 35s H 0 0 2279.0000000 2104.60224 7.65% - 43s H 0 0 2253.0000000 2104.60224 6.59% - 43s 0 0 2104.60224 0 97 2253.00000 2104.60224 6.59% - 46s 0 0 2104.60224 0 106 2253.00000 2104.60224 6.59% - 48s 0 0 2104.60224 0 119 2253.00000 2104.60224 6.59% - 49s 0 0 2104.60254 0 92 2253.00000 2104.60254 6.59% - 49s 0 0 2119.96183 0 106 2253.00000 2119.96183 5.90% - 50s 0 0 2119.96794 0 105 2253.00000 2119.96794 5.90% - 51s 0 0 2119.96850 0 103 2253.00000 2119.96850 5.90% - 51s 0 0 2119.96939 0 83 2253.00000 2119.96939 5.90% - 51s 0 0 2119.97006 0 91 2253.00000 2119.97006 5.90% - 51s 0 0 2119.97006 0 62 2253.00000 2119.97006 5.90% - 55s H 0 0 2213.0000000 2119.97006 4.20% - 56s H 0 0 2179.0000000 2119.97006 2.71% - 58s 0 2 2120.00942 0 62 2179.00000 2120.00942 2.71% - 59s 3 5 2122.34696 3 67 2179.00000 2121.09917 2.66% 845 60s 44 16 2143.53983 17 86 2179.00000 2121.74145 2.63% 213 65s H 103 24 2168.0000000 2126.42811 1.92% 156 67s 216 42 2147.86117 19 55 2168.00000 2132.28169 1.65% 110 70s 424 114 2143.16532 3 60 2168.00000 2136.22483 1.47% 116 75s H 512 126 2166.0000000 2138.11751 1.29% 114 77s 701 156 2145.14407 7 81 2166.00000 2141.90810 1.11% 105 80s 816 159 2141.90810 18 104 2166.00000 2141.90810 1.11% 112 85s 1746 238 2149.25424 29 55 2166.00000 2147.28212 0.86% 74.4 90s 2921 283 2161.71186 29 68 2166.00000 2154.80508 0.52% 60.3 95s 4368 68 2163.73798 25 108 2166.00000 2163.49012 0.12% 52.3 100s Cutting planes: Gomory: 63 Implied bound: 326 Flow cover: 300 Flow path: 162 Zero half: 7 Network: 2 Explored 4556 nodes (368818 simplex iterations) in 100.60 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.166000000000e+03, best bound 2.166000000000e+03, gap 0.0%