Build (method = -2) #dp: 1582 Step-3' Graph: 73 vertices and 230 arcs (0.01s) Step-4' Graph: 22 vertices and 128 arcs (0.01s) #V4/#V3 = 0.30 #A4/#A3 = 0.56 Ready! (0.01s) Optimize a model with 78 rows, 129 columns and 348 nonzeros Presolve removed 41 rows and 43 columns Presolve time: 0.00s Presolved: 37 rows, 86 columns, 217 nonzeros Variable types: 0 continuous, 86 integer (14 binary) Found heuristic solution: objective 81.0000000 Found heuristic solution: objective 58.0000000 Optimize a model with 37 rows, 86 columns and 217 nonzeros Presolved: 37 rows, 86 columns, 217 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 7.100e+01 Factor NZ : 5.140e+02 Factor Ops : 1.047e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 1.61132032e+03 -1.30235089e+03 1.54e+02 2.22e-16 5.15e+01 0s 1 3.48541837e+02 -4.90375485e+02 1.92e+01 6.66e-16 7.79e+00 0s 2 8.73319645e+01 -5.72744916e+01 5.78e-01 3.20e-14 8.23e-01 0s 3 5.81414745e+01 1.49511085e+01 4.08e-03 1.04e-14 2.29e-01 0s 4 5.04163310e+01 4.63780906e+01 2.28e-04 3.89e-16 2.14e-02 0s 5 5.00075363e+01 4.99726709e+01 2.11e-06 4.07e-16 1.84e-04 0s 6 5.00000000e+01 5.00000000e+01 3.23e-12 2.22e-16 2.96e-10 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 5.00000000e+01 Root relaxation: objective 5.000000e+01, 42 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 50.0000000 50.00000 0.0% - 0s Explored 0 nodes (42 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 5.000000000000e+01, best bound 5.000000000000e+01, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.02 seconds Objective: 50 Solution: 1 x [8, 56] 1 x [13, 55] 3 x [12, 54] 3 x [9, 53] 3 x [7, 52] 3 x [4, 51] 1 x [18, 50] 3 x [3, 49] 1 x [19, 48] 2 x [20, 47] 2 x [21, 46] 2 x [16, 45] 1 x [25, 44] 2 x [10, 43] 1 x [27, 42] 1 x [2, 41] 1 x [30, 40] 1 x [31, 39] 2 x [22, 39] 2 x [33, 38] 2 x [34, 37] 2 x [34, 36] 1 x [33, 35] 1 x [1, 32] 1 x [1, 29] 1 x [2, 28] 1 x [26, 26] 1 x [6, 24] 1 x [5, 23] 1 x [14, 17] 2 x [11, 15]