Build (method = -2) #dp: 285 Step-3' Graph: 37 vertices and 107 arcs (0.00s) Step-4' Graph: 5 vertices and 43 arcs (0.00s) #V4/#V3 = 0.14 #A4/#A3 = 0.40 Ready! (0.00s) Optimize a model with 25 rows, 44 columns and 127 nonzeros Presolve removed 3 rows and 3 columns Presolve time: 0.00s Presolved: 22 rows, 41 columns, 120 nonzeros Variable types: 0 continuous, 41 integer (0 binary) Found heuristic solution: objective 1561.0000000 Found heuristic solution: objective 1477.0000000 Found heuristic solution: objective 1399.0000000 Optimize a model with 22 rows, 41 columns and 120 nonzeros Presolved: 22 rows, 41 columns, 120 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 4.100e+01 Factor NZ : 2.530e+02 Factor Ops : 3.795e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.43885174e+03 -2.26140007e+03 2.14e+02 0.00e+00 1.00e+02 0s 1 1.14932246e+03 -2.37629999e+02 4.30e+00 3.33e-16 1.44e+01 0s 2 8.38891996e+02 5.22849734e+02 5.83e-01 5.55e-16 3.13e+00 0s 3 7.82044716e+02 7.68784998e+02 1.08e-13 3.33e-16 1.31e-01 0s 4 7.81001185e+02 7.80987779e+02 2.96e-13 3.33e-16 1.33e-04 0s 5 7.81000001e+02 7.80999988e+02 1.28e-13 2.22e-16 1.33e-07 0s 6 7.81000000e+02 7.81000000e+02 1.71e-13 3.33e-16 1.33e-10 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 7.81000000e+02 Root relaxation: objective 7.810000e+02, 28 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 781.0000000 781.00000 0.0% - 0s Explored 0 nodes (28 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 7.810000000000e+02, best bound 7.810000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 781 Solution: 66 x [11, 12] 73 x [4, 15] 6 x [9, 15] 96 x [1, 16] 3 x [1, 3] 83 x [7, 19] 79 x [5, 8] 26 x [3, 4] 68 x [13, 17] 6 x [3, 17] 9 x [3, 14] 88 x [6, 14] 1 x [5, 9] 6 x [2, 19] 2 x [3, 20] 1 x [2, 20] 97 x [18, 20] 71 x [2, 10]