Build (method = -2) #dp: 1000 Step-3' Graph: 53 vertices and 170 arcs (0.00s) Step-4' Graph: 19 vertices and 102 arcs (0.00s) #V4/#V3 = 0.36 #A4/#A3 = 0.60 Ready! (0.00s) Optimize a model with 39 rows, 103 columns and 277 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.00s Presolved: 37 rows, 101 columns, 273 nonzeros Variable types: 0 continuous, 101 integer (0 binary) Found heuristic solution: objective 1411.0000000 Found heuristic solution: objective 1368.0000000 Found heuristic solution: objective 967.0000000 Optimize a model with 37 rows, 101 columns and 273 nonzeros Presolved: 37 rows, 101 columns, 273 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.460e+02 Factor NZ : 4.530e+02 Factor Ops : 6.595e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.43566485e+04 -1.82263210e+04 5.31e+03 2.22e-16 4.79e+02 0s 1 3.24282078e+03 -5.92543767e+03 5.36e+02 7.77e-16 6.64e+01 0s 2 1.08099474e+03 -7.28525160e+02 2.07e+00 5.55e-16 8.19e+00 0s 3 5.93460800e+02 1.24120910e+02 4.79e-02 2.22e-16 2.11e+00 0s 4 4.88557845e+02 4.11938932e+02 2.68e-03 2.22e-16 3.45e-01 0s 5 4.70446695e+02 4.70007290e+02 3.40e-05 2.65e-16 1.98e-03 0s 6 4.70333334e+02 4.70333333e+02 5.94e-11 2.47e-16 3.07e-09 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 4.70333334e+02 Root relaxation: objective 4.703333e+02, 58 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 470.33333 0 7 967.00000 470.33333 51.4% - 0s H 0 0 471.0000000 470.33333 0.14% - 0s Explored 0 nodes (85 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 4.710000000000e+02, best bound 4.710000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 471 Solution: 43 x [14, 14, 17] 13 x [6, 7, 9] 1 x [7, 14] 1 x [7, 14, 14] 67 x [4, 7, 8] 2 x [9, 11, 15] 11 x [14, 15, 20] 80 x [9, 18, 19] 48 x [3, 5, 20] 40 x [16, 16, 20] 3 x [11, 13, 19] 24 x [2, 5, 6] 39 x [1, 2, 13] 69 x [10, 11, 12] 1 x [2, 13] 5 x [2, 4, 6] 24 x [10, 13, 13]