current bounds on the number of colors: 0 -- 185 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 03:07:33 2012 Optimize a model with 77741 rows, 17863 columns and 249688 nonzeros Presolve time: 0.25s Presolved: 77741 rows, 17863 columns, 249688 nonzeros Variable types: 0 continuous, 17863 integer (17863 binary) Root relaxation: objective 0.000000e+00, 607 iterations, 0.05 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 (993 simplex iterations) in 0.41 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 -- 92 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 03:07:35 2012 Optimize a model with 38963 rows, 9353 columns and 124844 nonzeros Presolve time: 0.16s Presolved: 38963 rows, 9353 columns, 124844 nonzeros Variable types: 0 continuous, 9353 integer (9353 binary) Root relaxation: objective 0.000000e+00, 481 iterations, 0.02 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 (862 simplex iterations) in 0.23 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 -- 46 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 03:07:35 2012 Optimize a model with 19574 rows, 5098 columns and 62422 nonzeros Presolve time: 0.08s Presolved: 19574 rows, 5098 columns, 62422 nonzeros Variable types: 0 continuous, 5098 integer (5098 binary) Root relaxation: objective 0.000000e+00, 401 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 (722 simplex iterations) in 0.12 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 03:07:36 2012 Optimize a model with 9458 rows, 2878 columns and 29854 nonzeros Presolve time: 0.03s Presolved: 9458 rows, 2878 columns, 29854 nonzeros Variable types: 0 continuous, 2878 integer (2878 binary) Root relaxation: objective 0.000000e+00, 386 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 (721 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 03:07:36 2012 Optimize a model with 4400 rows, 1768 columns and 13570 nonzeros Presolve time: 0.01s Presolved: 4400 rows, 1768 columns, 13570 nonzeros Variable types: 0 continuous, 1768 integer (1768 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 0 237 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3617 simplex iterations) in 0.24 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 03:07:36 2012 Optimize a model with 1871 rows, 1213 columns and 5428 nonzeros Presolve removed 185 rows and 185 columns Presolve time: 0.00s Presolved: 1686 rows, 1028 columns, 5058 nonzeros Variable types: 0 continuous, 1028 integer (1028 binary) Root relaxation: objective 0.000000e+00, 191 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 185 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (799 simplex iterations) in 0.02 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: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 03:07:36 2012 Optimize a model with 2714 rows, 1398 columns and 8142 nonzeros Presolve time: 0.01s Presolved: 2714 rows, 1398 columns, 8142 nonzeros Variable types: 0 continuous, 1398 integer (1398 binary) Root relaxation: objective 0.000000e+00, 441 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 0 360 - 0.00000 - - 0s 0 0 0.00000 0 364 - 0.00000 - - 0s 0 0 0.00000 0 486 - 0.00000 - - 0s 0 0 0.00000 0 491 - 0.00000 - - 1s 0 0 0.00000 0 488 - 0.00000 - - 1s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Zero half: 991 Explored 0 nodes (12606 simplex iterations) in 1.94 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 03:07:38 2012 Optimize a model with 3557 rows, 1583 columns and 10856 nonzeros Presolve time: 0.01s Presolved: 3557 rows, 1583 columns, 10856 nonzeros Variable types: 0 continuous, 1583 integer (1583 binary) Root relaxation: objective 0.000000e+00, 424 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 0 362 - 0.00000 - - 0s 0 0 0.00000 0 348 - 0.00000 - - 0s 0 0 0.00000 0 354 - 0.00000 - - 0s 0 0 0.00000 0 386 - 0.00000 - - 0s 0 0 0.00000 0 346 - 0.00000 - - 1s 0 0 0.00000 0 328 - 0.00000 - - 1s 0 0 0.00000 0 328 - 0.00000 - - 2s 0 0 0.00000 0 328 - 0.00000 - - 2s 0 0 0.00000 0 328 - 0.00000 - - 2s 0 0 0.00000 0 334 - 0.00000 - - 3s 0 0 0.00000 0 334 - 0.00000 - - 3s 0 2 0.00000 0 334 - 0.00000 - - 4s 135 34 infeasible 21 - 0.00000 - 142 5s 613 56 0.00000 4 332 - 0.00000 - 128 10s 618 59 0.00000 18 310 - 0.00000 - 127 15s 622 62 0.00000 18 269 - 0.00000 - 126 21s 625 64 0.00000 9 390 - 0.00000 - 126 25s 809 34 infeasible 26 - 0.00000 - 230 30s 1185 21 infeasible 21 - 0.00000 - 226 35s 1537 51 infeasible 29 - 0.00000 - 223 40s 1911 43 0.00000 24 332 - 0.00000 - 221 45s 2278 32 infeasible 26 - 0.00000 - 220 50s 2655 41 0.00000 23 371 - 0.00000 - 218 55s 3028 32 0.00000 26 320 - 0.00000 - 216 60s 3387 51 infeasible 29 - 0.00000 - 216 65s 3720 46 0.00000 26 330 - 0.00000 - 217 70s 4008 54 0.00000 26 393 - 0.00000 - 219 75s 4374 76 infeasible 26 - 0.00000 - 218 80s 4741 69 0.00000 28 330 - 0.00000 - 217 85s 5089 63 infeasible 27 - 0.00000 - 217 90s 5464 64 infeasible 22 - 0.00000 - 216 95s 5805 53 0.00000 24 345 - 0.00000 - 217 100s 6128 62 infeasible 27 - 0.00000 - 217 105s 6447 69 0.00000 25 387 - 0.00000 - 218 110s 6771 97 0.00000 29 380 - 0.00000 - 218 115s 7112 72 infeasible 28 - 0.00000 - 218 120s 7473 73 infeasible 29 - 0.00000 - 218 125s 7815 75 infeasible 26 - 0.00000 - 218 130s 8150 82 infeasible 29 - 0.00000 - 219 135s 8488 104 infeasible 27 - 0.00000 - 219 140s 8809 97 infeasible 29 - 0.00000 - 220 145s 9146 96 infeasible 24 - 0.00000 - 220 150s 9470 80 0.00000 25 330 - 0.00000 - 221 155s 9858 78 infeasible 28 - 0.00000 - 220 160s 10201 77 infeasible 25 - 0.00000 - 220 165s 10567 87 0.00000 26 336 - 0.00000 - 220 170s 10926 86 0.00000 23 404 - 0.00000 - 220 175s 11230 74 infeasible 28 - 0.00000 - 220 180s 11561 77 0.00000 21 324 - 0.00000 - 221 185s 11880 70 0.00000 19 397 - 0.00000 - 221 190s 12207 75 infeasible 29 - 0.00000 - 221 195s 12531 69 infeasible 22 - 0.00000 - 222 200s 12871 53 infeasible 25 - 0.00000 - 222 205s 13178 46 0.00000 28 310 - 0.00000 - 222 210s 13486 29 infeasible 27 - 0.00000 - 222 215s 13771 22 infeasible 28 - 0.00000 - 223 220s 14094 11 infeasible 28 - 0.00000 - 223 225s Cutting planes: Clique: 1 Zero half: 6 Explored 14272 nodes (3211256 simplex iterations) in 227.68 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 5