current bounds on the number of colors: 0 -- 175 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:52:18 2012 Optimize a model with 66382 rows, 15986 columns and 213846 nonzeros Presolve time: 0.20s Presolved: 66382 rows, 15986 columns, 213846 nonzeros Variable types: 0 continuous, 15986 integer (15986 binary) Root relaxation: objective 0.000000e+00, 698 iterations, 0.07 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 (1096 simplex iterations) in 0.38 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 -- 87 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:52:19 2012 Optimize a model with 32898 rows, 8286 columns and 105694 nonzeros Presolve time: 0.15s Presolved: 32898 rows, 8286 columns, 105694 nonzeros Variable types: 0 continuous, 8286 integer (8286 binary) Root relaxation: objective 0.000000e+00, 506 iterations, 0.03 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 (865 simplex iterations) in 0.22 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 -- 43 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:52:20 2012 Optimize a model with 16156 rows, 4436 columns and 51618 nonzeros Presolve time: 0.06s Presolved: 16156 rows, 4436 columns, 51618 nonzeros Variable types: 0 continuous, 4436 integer (4436 binary) Root relaxation: objective 0.000000e+00, 388 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 (711 simplex iterations) in 0.09 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 -- 21 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:52:20 2012 Optimize a model with 7785 rows, 2511 columns and 24580 nonzeros Presolve time: 0.02s Presolved: 7785 rows, 2511 columns, 24580 nonzeros Variable types: 0 continuous, 2511 integer (2511 binary) Root relaxation: objective 0.000000e+00, 377 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 (682 simplex iterations) in 0.04 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 -- 10 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 22:52:20 2012 Optimize a model with 3980 rows, 1636 columns and 12290 nonzeros Presolve time: 0.01s Presolved: 3980 rows, 1636 columns, 12290 nonzeros Variable types: 0 continuous, 1636 integer (1636 binary) Root relaxation: objective 0.000000e+00, 383 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 92 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (2378 simplex iterations) in 0.10 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 Fri Dec 14 22:52:20 2012 Optimize a model with 1697 rows, 1111 columns and 4916 nonzeros Presolve removed 175 rows and 175 columns Presolve time: 0.00s Presolved: 1522 rows, 936 columns, 4566 nonzeros Variable types: 0 continuous, 936 integer (936 binary) Root relaxation: objective 0.000000e+00, 181 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 0 175 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (740 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 Fri Dec 14 22:52:20 2012 Optimize a model with 2458 rows, 1286 columns and 7374 nonzeros Presolve time: 0.01s Presolved: 2458 rows, 1286 columns, 7374 nonzeros Variable types: 0 continuous, 1286 integer (1286 binary) Root relaxation: objective 0.000000e+00, 402 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 0 342 - 0.00000 - - 0s 0 0 0.00000 0 344 - 0.00000 - - 0s 0 0 0.00000 0 453 - 0.00000 - - 0s 0 0 0.00000 0 496 - 0.00000 - - 1s 0 0 infeasible 0 - 0.10000 - - 1s Cutting planes: Zero half: 685 Explored 0 nodes (8548 simplex iterations) in 1.30 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 Fri Dec 14 22:52:22 2012 Optimize a model with 3219 rows, 1461 columns and 9832 nonzeros Presolve time: 0.01s Presolved: 3219 rows, 1461 columns, 9832 nonzeros Variable types: 0 continuous, 1461 integer (1461 binary) Root relaxation: objective 0.000000e+00, 393 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 0 334 - 0.00000 - - 0s 0 0 0.00000 0 304 - 0.00000 - - 0s 0 0 0.00000 0 320 - 0.00000 - - 0s 0 0 0.00000 0 318 - 0.00000 - - 0s 0 0 0.00000 0 382 - 0.00000 - - 0s 0 0 0.00000 0 302 - 0.00000 - - 1s 0 0 0.00000 0 310 - 0.00000 - - 1s 0 0 0.00000 0 298 - 0.00000 - - 1s 0 0 0.00000 0 288 - 0.00000 - - 2s 0 0 0.00000 0 286 - 0.00000 - - 2s 0 0 0.00000 0 415 - 0.00000 - - 2s 0 0 0.00000 0 392 - 0.00000 - - 3s 0 0 0.00000 0 390 - 0.00000 - - 3s 0 0 0.00000 0 416 - 0.00000 - - 4s 0 0 0.00000 0 416 - 0.00000 - - 4s 0 2 0.00000 0 416 - 0.00000 - - 5s 605 88 0.00000 14 313 - 0.00000 - 100 10s 610 91 0.00000 13 369 - 0.00000 - 99.1 15s 769 81 0.00000 26 333 - 0.00000 - 154 20s 1116 47 0.00000 28 338 - 0.00000 - 176 25s 1474 59 0.00000 30 288 - 0.00000 - 188 30s 1883 46 0.00000 27 375 - 0.00000 - 191 35s 2308 45 infeasible 30 - 0.00000 - 192 40s 2682 65 infeasible 34 - 0.00000 - 196 45s 3076 51 0.00000 33 292 - 0.00000 - 199 50s 3428 43 0.00000 29 306 - 0.00000 - 201 55s 3820 43 infeasible 26 - 0.00000 - 201 60s 4133 16 infeasible 30 - 0.00000 - 204 65s 4502 9 0.00000 28 361 - 0.00000 - 205 70s Cutting planes: Zero half: 12 Explored 4654 nodes (991958 simplex iterations) in 72.16 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