Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:33:25 2012 Optimize a model with 11004 rows, 5112 columns and 37770 nonzeros Presolve removed 1990 rows and 2 columns Presolve time: 0.42s Presolved: 9085 rows, 5110 columns, 37800 nonzeros Variable types: 0 continuous, 5110 integer (5110 binary) Found heuristic solution: objective 71.0000000 Root relaxation: objective 3.000000e+00, 7678 iterations, 1.50 seconds Total elapsed time = 6.79s Total elapsed time = 10.87s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 94 71.00000 3.00000 95.8% - 12s H 0 0 13.0000000 3.00000 76.9% - 12s H 0 0 9.0000000 3.00000 66.7% - 12s H 0 0 5.0000000 3.00000 40.0% - 12s 0 0 3.00000 0 187 5.00000 3.00000 40.0% - 13s H 0 0 4.0000000 3.00000 25.0% - 13s 0 0 3.00000 0 114 4.00000 3.00000 25.0% - 20s 0 0 3.00000 0 70 4.00000 3.00000 25.0% - 24s 0 0 3.00000 0 105 4.00000 3.00000 25.0% - 30s 0 0 3.00000 0 127 4.00000 3.00000 25.0% - 33s 0 0 3.00000 0 111 4.00000 3.00000 25.0% - 38s 0 0 3.00000 0 131 4.00000 3.00000 25.0% - 44s 0 0 3.00000 0 110 4.00000 3.00000 25.0% - 46s 0 0 3.00000 0 78 4.00000 3.00000 25.0% - 47s 0 0 3.00000 0 76 4.00000 3.00000 25.0% - 50s 0 0 3.00000 0 88 4.00000 3.00000 25.0% - 52s 0 0 3.00000 0 88 4.00000 3.00000 25.0% - 52s 0 2 3.00000 0 88 4.00000 3.00000 25.0% - 53s 2 3 3.00000 1 88 4.00000 3.00000 25.0% 2002 55s 4 4 3.00000 1 1335 4.00000 3.00000 25.0% 1001 65s 5 5 3.00000 1 142 4.00000 3.00000 25.0% 801 70s 6 6 3.00000 1 68 4.00000 3.00000 25.0% 667 77s 7 6 3.00000 1 86 4.00000 3.00000 25.0% 572 85s 8 7 3.00000 1 129 4.00000 3.00000 25.0% 500 93s 9 8 3.00000 1 125 4.00000 3.00000 25.0% 445 98s 10 8 3.00000 1 48 4.00000 3.00000 25.0% 400 105s 11 9 3.00000 1 121 4.00000 3.00000 25.0% 364 112s 12 10 3.00000 1 192 4.00000 3.00000 25.0% 334 121s 13 10 3.00000 1 110 4.00000 3.00000 25.0% 308 129s 14 11 3.00000 1 107 4.00000 3.00000 25.0% 286 135s 15 12 3.00000 1 95 4.00000 3.00000 25.0% 267 142s 16 12 3.00000 1 128 4.00000 3.00000 25.0% 250 153s 17 13 3.00000 1 126 4.00000 3.00000 25.0% 235 157s 19 16 3.00000 15 110 4.00000 3.00000 25.0% 14918 166s 21 18 3.00000 16 435 4.00000 3.00000 25.0% 13641 191s 22 18 3.00000 16 435 4.00000 3.00000 25.0% 13159 212s 23 19 3.00000 17 129 4.00000 3.00000 25.0% 12609 216s 29 13 infeasible 18 4.00000 3.00000 25.0% 10280 220s 34 10 3.00000 16 84 4.00000 3.00000 25.0% 9102 225s 37 12 3.00000 18 132 4.00000 3.00000 25.0% 8560 231s 42 6 infeasible 18 4.00000 4.00000 0.0% 7800 235s Cutting planes: Gomory: 10 Zero half: 30 Explored 43 nodes (556303 simplex iterations) in 235.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%