Build (method = -2) #dp: 302 Step-3' Graph: 38 vertices and 104 arcs (0.00s) Step-4' Graph: 6 vertices and 40 arcs (0.00s) #V4/#V3 = 0.16 #A4/#A3 = 0.38 Ready! (0.00s) Optimize a model with 15 rows, 41 columns and 118 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.00s Presolved: 13 rows, 39 columns, 114 nonzeros Variable types: 0 continuous, 39 integer (0 binary) Found heuristic solution: objective 999.0000000 Found heuristic solution: objective 831.0000000 Optimize a model with 13 rows, 39 columns and 114 nonzeros Presolved: 13 rows, 39 columns, 114 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 4.100e+01 Factor NZ : 9.100e+01 Factor Ops : 8.190e+02 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.56878571e+03 -4.31352658e+03 5.34e+02 2.22e-16 2.00e+02 0s 1 6.34999317e+02 -1.66345684e+03 6.25e-13 2.22e-16 2.72e+01 0s 2 4.03460445e+02 -1.64985568e+02 1.60e-13 1.42e-16 6.62e+00 0s 3 2.56114904e+02 1.96439894e+02 9.06e-14 2.22e-16 6.86e-01 0s 4 2.50165882e+02 2.48346722e+02 8.34e-14 2.22e-16 2.09e-02 0s 5 2.50000005e+02 2.49999982e+02 4.52e-14 2.22e-16 2.64e-07 0s 6 2.50000000e+02 2.50000000e+02 1.29e-13 2.22e-16 2.68e-13 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 2.50000000e+02 Root relaxation: objective 2.500000e+02, 31 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 250.0000000 250.00000 0.0% - 0s Explored 0 nodes (31 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.500000000000e+02, best bound 2.500000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 250 Solution: 56 x [3, 4, 5, 9] 1 x [3, 5, 7, 9] 98 x [5, 5, 7, 9] 2 x [5, 8, 9, 9] 4 x [4, 7, 9, 9] 1 x [5, 7, 9, 9] 46 x [1, 3, 4, 8] 14 x [3, 5, 6, 7] 28 x [2, 3, 5, 6]