Build (method = -2) #dp: 754 Step-3' Graph: 49 vertices and 149 arcs (0.00s) Step-4' Graph: 6 vertices and 63 arcs (0.00s) #V4/#V3 = 0.12 #A4/#A3 = 0.42 Ready! (0.00s) Optimize a model with 26 rows, 64 columns and 186 nonzeros Presolve removed 2 rows and 3 columns Presolve time: 0.00s Presolved: 24 rows, 61 columns, 180 nonzeros Variable types: 0 continuous, 61 integer (0 binary) Found heuristic solution: objective 366.0000000 Found heuristic solution: objective 346.0000000 Optimize a model with 24 rows, 61 columns and 180 nonzeros Presolved: 24 rows, 61 columns, 180 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 6.600e+01 Factor NZ : 3.000e+02 Factor Ops : 4.900e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 7.91649618e+02 -1.03907381e+03 4.65e+01 1.11e-16 2.77e+01 0s 1 2.36198066e+02 -3.31009445e+02 1.46e-13 2.22e-16 4.12e+00 0s 2 1.49521746e+02 2.04875429e+01 8.88e-14 2.22e-16 9.16e-01 0s 3 1.24738378e+02 1.17162127e+02 5.82e-14 3.33e-16 5.34e-02 0s 4 1.24010215e+02 1.23815518e+02 1.27e-14 2.22e-16 1.37e-03 0s 5 1.24000000e+02 1.24000000e+02 3.25e-14 2.22e-16 1.83e-09 0s Barrier solved model in 5 iterations and 0.00 seconds Optimal objective 1.24000000e+02 Root relaxation: objective 1.240000e+02, 49 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 124.0000000 124.00000 0.0% - 0s Explored 0 nodes (49 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.240000000000e+02, best bound 1.240000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 124 Solution: 6 x [10, 18, 20] 20 x [2, 8, 16] 1 x [6, 8, 9] 1 x [6, 7, 9] 6 x [4, 6, 11] 1 x [3, 6, 9] 1 x [6, 16, 20] 23 x [6, 11, 13] 4 x [7, 10, 20] 11 x [7, 12, 17] 4 x [11, 12, 19] 1 x [9, 14, 15] 28 x [5, 9, 14] 17 x [1, 3, 15]