current bounds on the number of colors: 0 -- 192 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 05:53:04 2012 Optimize a model with 86976 rows, 19336 columns and 278784 nonzeros Presolve time: 0.28s Presolved: 86976 rows, 19336 columns, 278784 nonzeros Variable types: 0 continuous, 19336 integer (19336 binary) Root relaxation: objective 0.000000e+00, 845 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 (1286 simplex iterations) in 0.51 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 -- 96 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 05:53:06 2012 Optimize a model with 43584 rows, 10120 columns and 139392 nonzeros Presolve time: 0.15s Presolved: 43584 rows, 10120 columns, 139392 nonzeros Variable types: 0 continuous, 10120 integer (10120 binary) Root relaxation: objective 0.000000e+00, 612 iterations, 0.04 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 (1053 simplex iterations) in 0.26 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 -- 48 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 05:53:06 2012 Optimize a model with 21888 rows, 5512 columns and 69696 nonzeros Presolve time: 0.09s Presolved: 21888 rows, 5512 columns, 69696 nonzeros Variable types: 0 continuous, 5512 integer (5512 binary) Root relaxation: objective 0.000000e+00, 477 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 (851 simplex iterations) in 0.13 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 05:53:07 2012 Optimize a model with 11040 rows, 3208 columns and 34848 nonzeros Presolve time: 0.03s Presolved: 11040 rows, 3208 columns, 34848 nonzeros Variable types: 0 continuous, 3208 integer (3208 binary) Root relaxation: objective 0.000000e+00, 391 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 (770 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 05:53:07 2012 Optimize a model with 5616 rows, 2056 columns and 17424 nonzeros Presolve time: 0.02s Presolved: 5616 rows, 2056 columns, 17424 nonzeros Variable types: 0 continuous, 2056 integer (2056 binary) Root relaxation: objective 0.000000e+00, 413 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 (1393 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 05:53:07 2012 Optimize a model with 2904 rows, 1480 columns and 8712 nonzeros Presolve time: 0.01s Presolved: 2904 rows, 1480 columns, 8712 nonzeros Variable types: 0 continuous, 1480 integer (1480 binary) Root relaxation: objective 0.000000e+00, 408 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 0 382 - 0.00000 - - 0s 0 0 0.00000 0 382 - 0.00000 - - 0s 0 0 0.00000 0 545 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Gomory: 60 Zero half: 512 Explored 0 nodes (7515 simplex iterations) in 1.29 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 05:53:09 2012 Optimize a model with 3808 rows, 1672 columns and 11616 nonzeros Presolve time: 0.01s Presolved: 3808 rows, 1672 columns, 11616 nonzeros Variable types: 0 continuous, 1672 integer (1672 binary) Root relaxation: objective 0.000000e+00, 426 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 0 358 - 0.00000 - - 0s 0 0 0.00000 0 362 - 0.00000 - - 0s 0 0 0.00000 0 374 - 0.00000 - - 0s 0 0 0.00000 0 464 - 0.00000 - - 0s 0 0 0.00000 0 356 - 0.00000 - - 1s 0 0 0.00000 0 350 - 0.00000 - - 1s 0 0 0.00000 0 342 - 0.00000 - - 2s 0 0 0.00000 0 350 - 0.00000 - - 3s 0 0 0.00000 0 332 - 0.00000 - - 3s 0 0 0.00000 0 332 - 0.00000 - - 4s 0 0 0.00000 0 326 - 0.00000 - - 4s 0 0 0.00000 0 334 - 0.00000 - - 4s 0 0 0.00000 0 334 - 0.00000 - - 5s 0 2 0.00000 0 334 - 0.00000 - - 5s 603 45 0.00000 4 374 - 0.00000 - 121 10s 608 49 0.00000 10 354 - 0.00000 - 120 15s 611 51 0.00000 5 342 - 0.00000 - 120 20s 614 53 0.00000 16 310 - 0.00000 - 119 25s 618 55 0.00000 18 300 - 0.00000 - 118 30s 791 45 0.00000 27 366 - 0.00000 - 239 35s 1095 59 infeasible 32 - 0.00000 - 233 40s 1452 102 0.00000 29 360 - 0.00000 - 224 45s 1818 94 infeasible 23 - 0.00000 - 221 50s 2187 115 infeasible 31 - 0.00000 - 217 55s 2569 151 infeasible 28 - 0.00000 - 214 60s 2946 138 infeasible 29 - 0.00000 - 212 65s 3281 143 0.00000 34 320 - 0.00000 - 212 70s 3631 133 infeasible 31 - 0.00000 - 213 75s 3960 110 infeasible 32 - 0.00000 - 213 80s 4258 118 0.00000 26 363 - 0.00000 - 215 85s 4585 101 infeasible 28 - 0.00000 - 216 90s 4922 100 infeasible 34 - 0.00000 - 216 95s 5227 89 0.00000 25 340 - 0.00000 - 217 100s 5532 76 infeasible 33 - 0.00000 - 218 105s 5854 86 0.00000 27 438 - 0.00000 - 218 110s 6152 76 0.00000 27 322 - 0.00000 - 220 115s 6443 61 infeasible 30 - 0.00000 - 220 120s 6724 42 0.00000 30 314 - 0.00000 - 221 125s 6989 39 0.00000 28 352 - 0.00000 - 222 130s 7235 17 0.00000 23 407 - 0.00000 - 224 135s 7586 22 infeasible 28 - 0.00000 - 223 140s 7920 20 infeasible 26 - 0.00000 - 223 145s 8228 8 0.00000 22 428 - 0.00000 - 223 150s Cutting planes: Zero half: 11 Explored 8373 nodes (1916366 simplex iterations) in 152.77 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 05:55:41 2012 Optimize a model with 4712 rows, 1864 columns and 14520 nonzeros Presolve time: 0.01s Presolved: 4712 rows, 1864 columns, 14520 nonzeros Variable types: 0 continuous, 1864 integer (1864 binary) Root relaxation: objective 0.000000e+00, 422 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 0 102 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (3207 simplex iterations) in 0.21 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