Gurobi 5.0.1 (linux64) logging started Wed Dec 19 14:01:55 2012 Optimize a model with 902 rows, 840 columns and 3620 nonzeros Presolve removed 156 rows and 40 columns Presolve time: 0.02s Presolved: 746 rows, 800 columns, 3364 nonzeros Variable types: 380 continuous, 420 integer (420 binary) Root relaxation: objective 1.546877e+02, 592 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 154.68766 0 35 - 154.68766 - - 0s 0 0 173.99650 0 43 - 173.99650 - - 0s 0 0 178.26043 0 37 - 178.26043 - - 0s 0 0 181.48902 0 48 - 181.48902 - - 0s 0 0 181.76885 0 53 - 181.76885 - - 0s 0 0 181.85365 0 54 - 181.85365 - - 0s 0 2 181.86739 0 54 - 181.86739 - - 0s 1798 916 221.25092 34 20 - 193.62255 - 38.7 5s 5292 3433 infeasible 56 - 197.28969 - 34.9 10s 8796 5892 infeasible 45 - 200.01958 - 34.3 15s H11640 7676 299.0000000 201.06814 32.8% 33.7 18s 11801 7784 263.05555 38 54 299.00000 201.16611 32.7% 33.6 21s H11809 7399 297.0000000 201.16611 32.3% 33.7 21s H11836 7031 285.0000000 201.16611 29.4% 33.8 22s H12189 6760 283.0000000 201.16611 28.9% 33.9 24s 12513 6877 202.84884 38 20 283.00000 201.16611 28.9% 33.8 25s *14147 6997 45 280.0000000 201.16611 28.2% 33.7 27s H14481 6779 274.0000000 201.38332 26.5% 33.5 27s 16422 7175 cutoff 44 274.00000 204.47132 25.4% 33.3 30s H18727 7165 273.0000000 208.59093 23.6% 33.5 33s 20238 7284 223.70992 39 29 273.00000 211.27791 22.6% 33.5 35s 24347 7428 240.75805 46 25 273.00000 218.00401 20.1% 33.6 40s *28088 6985 46 271.0000000 221.62842 18.2% 33.5 44s 28588 7075 cutoff 48 271.00000 222.37722 17.9% 33.6 45s H29819 7069 264.0000000 222.96059 15.5% 33.6 46s 32611 7493 245.52141 61 32 264.00000 225.32940 14.6% 33.8 50s 36496 7219 232.32285 36 26 264.00000 229.49782 13.1% 34.3 55s 40354 6296 240.77541 47 27 264.00000 234.17262 11.3% 34.8 60s 44083 4685 261.51152 48 25 264.00000 239.86928 9.14% 35.1 65s 49922 1221 infeasible 59 264.00000 253.46888 3.99% 34.0 70s Cutting planes: Gomory: 19 Implied bound: 77 Flow cover: 51 Explored 51356 nodes (1717805 simplex iterations) in 70.71 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.640000000000e+02, best bound 2.640000000000e+02, gap 0.0%