Build (method = -2) #dp: 1703 Step-3' Graph: 275 vertices and 818 arcs (0.01s) Step-4' Graph: 207 vertices and 682 arcs (0.01s) #V4/#V3 = 0.75 #A4/#A3 = 0.83 Ready! (0.01s) Optimize a model with 222 rows, 683 columns and 1639 nonzeros Presolve removed 97 rows and 234 columns Presolve time: 0.01s Presolved: 125 rows, 449 columns, 1165 nonzeros Variable types: 0 continuous, 449 integer (0 binary) Found heuristic solution: objective 567.0000000 Optimize a model with 125 rows, 449 columns and 1165 nonzeros Presolve removed 1 rows and 1 columns Presolved: 124 rows, 448 columns, 1173 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 7.260e+02 Factor NZ : 2.542e+03 Factor Ops : 5.809e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.08084837e+03 -1.55600331e+04 2.87e+04 1.11e-16 2.08e+02 0s 1 8.61537225e+02 -6.52649777e+03 4.32e+03 1.78e-15 3.49e+01 0s 2 3.92622324e+02 -2.61154529e+03 9.28e+02 3.55e-15 8.46e+00 0s 3 4.99006914e+02 -3.93672654e+02 1.31e+02 1.94e-15 1.62e+00 0s 4 5.48168661e+02 3.82741638e+02 2.44e+01 5.33e-15 2.71e-01 0s 5 5.55784304e+02 5.36744199e+02 1.86e+00 1.70e-15 2.50e-02 0s 6 5.55220655e+02 5.54311433e+02 2.19e-01 1.64e-15 1.25e-03 0s 7 5.55000352e+02 5.54999010e+02 4.85e-07 2.40e-15 1.48e-06 0s 8 5.55000000e+02 5.54999999e+02 2.84e-13 1.69e-15 1.48e-09 0s Barrier solved model in 8 iterations and 0.00 seconds Optimal objective 5.55000000e+02 Root relaxation: objective 5.550000e+02, 260 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 555.0000000 555.00000 0.0% - 0s Explored 0 nodes (260 simplex iterations) in 0.02 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 5.550000000000e+02, best bound 5.550000000000e+02, gap 0.0% Preprocessing time: 0.02 seconds Gurobi run time: 0.02 seconds Total run time: 0.04 seconds Objective: 555 Solution: 4 x [1, 10] 5 x [2, 3, 10, 15] 4 x [2, 10] 3 x [2, 10, 15] 4 x [3, 4, 10] 1 x [3, 5, 8, 9, 10, 12, 13] 8 x [3, 5, 8, 10] 3 x [3, 5, 9, 10, 12, 13] 16 x [3, 7, 10, 13, 14, 15] 2 x [3, 9, 10, 12, 13] 4 x [3, 10] 4 x [3, 10, 11] 5 x [3, 10, 14, 15] 24 x [5, 10] 10 x [6, 8, 10, 14, 15] 2 x [9, 10, 12, 13, 14, 15] 170 x [10] 9 x [10, 14, 15] 277 x [10, 15]