current bounds on the number of colors: 0 -- 198 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 08:25:13 2012 Optimize a model with 96426 rows, 20574 columns and 308286 nonzeros Presolve time: 0.32s Presolved: 96426 rows, 20574 columns, 308286 nonzeros Variable types: 0 continuous, 20574 integer (20574 binary) Root relaxation: objective 0.000000e+00, 815 iterations, 0.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1278 simplex iterations) in 0.55 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 99 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 08:25:15 2012 Optimize a model with 47826 rows, 10674 columns and 152586 nonzeros Presolve time: 0.16s Presolved: 47826 rows, 10674 columns, 152586 nonzeros Variable types: 0 continuous, 10674 integer (10674 binary) Root relaxation: objective 0.000000e+00, 721 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1169 simplex iterations) in 0.28 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 49 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 08:25:16 2012 Optimize a model with 23526 rows, 5724 columns and 74736 nonzeros Presolve time: 0.10s Presolved: 23526 rows, 5724 columns, 74736 nonzeros Variable types: 0 continuous, 5724 integer (5724 binary) Root relaxation: objective 0.000000e+00, 473 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (869 simplex iterations) in 0.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 24 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 08:25:16 2012 Optimize a model with 11862 rows, 3348 columns and 37368 nonzeros Presolve time: 0.04s Presolved: 11862 rows, 3348 columns, 37368 nonzeros Variable types: 0 continuous, 3348 integer (3348 binary) Root relaxation: objective 0.000000e+00, 407 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (783 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 08:25:16 2012 Optimize a model with 6030 rows, 2160 columns and 18684 nonzeros Presolve time: 0.02s Presolved: 6030 rows, 2160 columns, 18684 nonzeros Variable types: 0 continuous, 2160 integer (2160 binary) Root relaxation: objective 0.000000e+00, 446 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1058 simplex iterations) in 0.05 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% current bounds on the number of colors: 0 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 08:25:16 2012 Optimize a model with 3114 rows, 1566 columns and 9342 nonzeros Presolve time: 0.01s Presolved: 3114 rows, 1566 columns, 9342 nonzeros Variable types: 0 continuous, 1566 integer (1566 binary) Root relaxation: objective 0.000000e+00, 444 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 394 - 0.00000 - - 0s 0 0 0.00000 0 388 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (4751 simplex iterations) in 0.64 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - current bounds on the number of colors: 3 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 08:25:17 2012 Optimize a model with 4086 rows, 1764 columns and 12456 nonzeros Presolve time: 0.01s Presolved: 4086 rows, 1764 columns, 12456 nonzeros Variable types: 0 continuous, 1764 integer (1764 binary) Root relaxation: objective 0.000000e+00, 447 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 370 - 0.00000 - - 0s 0 0 0.00000 0 378 - 0.00000 - - 0s 0 0 0.00000 0 380 - 0.00000 - - 0s 0 0 0.00000 0 444 - 0.00000 - - 0s 0 0 0.00000 0 368 - 0.00000 - - 1s 0 0 0.00000 0 374 - 0.00000 - - 2s 0 0 0.00000 0 370 - 0.00000 - - 2s 0 0 0.00000 0 376 - 0.00000 - - 3s 0 0 0.00000 0 362 - 0.00000 - - 3s 0 0 0.00000 0 363 - 0.00000 - - 4s 0 0 0.00000 0 354 - 0.00000 - - 4s 0 0 0.00000 0 356 - 0.00000 - - 5s 0 0 0.00000 0 356 - 0.00000 - - 5s 0 2 0.00000 0 356 - 0.00000 - - 5s 640 32 0.00000 17 338 - 0.00000 - 107 10s 709 42 0.00000 9 342 - 0.00000 - 104 16s 712 44 0.00000 18 314 - 0.00000 - 104 20s 715 46 0.00000 15 308 - 0.00000 - 103 26s 718 48 0.00000 9 312 - 0.00000 - 103 31s 727 54 0.00000 15 372 - 0.00000 - 198 35s 930 52 infeasible 26 - 0.00000 - 202 40s 1222 52 infeasible 28 - 0.00000 - 211 45s 1518 42 infeasible 27 - 0.00000 - 216 50s 1758 68 infeasible 26 - 0.00000 - 222 55s 1986 52 infeasible 25 - 0.00000 - 230 60s 2259 61 0.00000 23 364 - 0.00000 - 229 65s 2535 81 infeasible 25 - 0.00000 - 230 70s 2780 66 infeasible 20 - 0.00000 - 233 75s 3025 83 0.00000 28 366 - 0.00000 - 236 80s 3313 79 infeasible 30 - 0.00000 - 237 85s 3589 77 infeasible 25 - 0.00000 - 238 90s 3818 74 infeasible 24 - 0.00000 - 241 95s 4100 68 infeasible 27 - 0.00000 - 241 100s 4363 53 infeasible 29 - 0.00000 - 243 105s 4641 55 0.00000 25 352 - 0.00000 - 243 110s 4972 56 infeasible 25 - 0.00000 - 242 115s 5303 51 infeasible 20 - 0.00000 - 241 120s 5562 38 infeasible 23 - 0.00000 - 242 125s 5833 35 0.00000 25 352 - 0.00000 - 242 130s 6106 38 0.00000 23 366 - 0.00000 - 242 135s 6366 28 infeasible 26 - 0.00000 - 243 140s 6589 17 0.00000 26 358 - 0.00000 - 244 145s 6868 10 0.00000 22 366 - 0.00000 - 244 150s 7141 7 0.00000 28 386 - 0.00000 - 244 155s Cutting planes: Zero half: 9 Explored 7163 nodes (1794793 simplex iterations) in 155.68 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 4 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 08:27:53 2012 Optimize a model with 5058 rows, 1962 columns and 15570 nonzeros Presolve time: 0.01s Presolved: 5058 rows, 1962 columns, 15570 nonzeros Variable types: 0 continuous, 1962 integer (1962 binary) Root relaxation: objective 0.000000e+00, 414 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 188 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3326 simplex iterations) in 0.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 0.000000000000e+00, best bound 0.000000000000e+00, gap 0.0% optimal solution found: number of colors: 5