Build (method = -2) #dp: 2727 Step-3' Graph: 94 vertices and 299 arcs (0.01s) Step-4' Graph: 29 vertices and 169 arcs (0.01s) #V4/#V3 = 0.31 #A4/#A3 = 0.57 Ready! (0.01s) Optimize a model with 100 rows, 170 columns and 457 nonzeros Presolve removed 28 rows and 29 columns Presolve time: 0.00s Presolved: 72 rows, 141 columns, 372 nonzeros Variable types: 0 continuous, 141 integer (0 binary) Found heuristic solution: objective 496.0000000 Found heuristic solution: objective 310.0000000 Optimize a model with 72 rows, 141 columns and 372 nonzeros Presolved: 72 rows, 141 columns, 372 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.410e+02 Factor NZ : 1.025e+03 Factor Ops : 2.094e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 6.60938341e+03 -5.98641330e+03 2.89e+03 2.22e-16 1.14e+02 0s 1 1.49245684e+03 -2.00301825e+03 3.43e+02 8.88e-16 1.74e+01 0s 2 3.92500455e+02 -1.14640523e+02 3.61e+00 5.55e-15 1.58e+00 0s 3 2.78286664e+02 1.32882790e+02 1.98e-02 1.11e-15 4.43e-01 0s 4 2.51258480e+02 2.39680327e+02 5.55e-04 6.66e-16 3.53e-02 0s 5 2.50004451e+02 2.49991688e+02 4.39e-07 8.88e-16 3.89e-05 0s 6 2.50000000e+02 2.50000000e+02 4.26e-13 7.77e-16 4.01e-11 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 2.50000000e+02 Root relaxation: objective 2.500000e+02, 66 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 (66 simplex iterations) in 0.01 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: 0.02 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 250 Solution: 4 x [3, 71] 5 x [21, 70] 11 x [13, 69] 9 x [18, 68] 1 x [13, 68] 2 x [14, 67] 5 x [23, 66] 8 x [2, 65] 7 x [24, 64] 6 x [4, 63] 1 x [30, 62] 9 x [11, 62] 6 x [1, 61] 1 x [32, 60] 8 x [16, 60] 7 x [29, 59] 1 x [30, 58] 5 x [28, 58] 5 x [35, 57] 8 x [33, 56] 1 x [30, 56] 7 x [34, 55] 1 x [30, 55] 3 x [32, 54] 5 x [10, 53] 1 x [39, 52] 6 x [25, 52] 7 x [41, 51] 5 x [40, 50] 1 x [39, 50] 5 x [37, 49] 1 x [3, 49] 8 x [44, 48] 5 x [9, 47] 1 x [44, 46] 6 x [43, 46] 11 x [5, 45] 1 x [39, 42] 6 x [19, 42] 11 x [31, 38] 5 x [15, 36] 6 x [8, 27] 1 x [13, 26] 9 x [12, 26] 12 x [14, 22] 7 x [7, 20] 9 x [6, 17]