current bounds on the number of colors: 0 -- 199 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 08:44:17 2012 Optimize a model with 101278 rows, 20722 columns and 322938 nonzeros Presolve time: 0.33s Presolved: 101278 rows, 20722 columns, 322938 nonzeros Variable types: 0 continuous, 20722 integer (20722 binary) Root relaxation: objective 0.000000e+00, 857 iterations, 0.11 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 (1297 simplex iterations) in 0.59 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 08:44:19 2012 Optimize a model with 50228 rows, 10772 columns and 159838 nonzeros Presolve time: 0.17s Presolved: 50228 rows, 10772 columns, 159838 nonzeros Variable types: 0 continuous, 10772 integer (10772 binary) Root relaxation: objective 0.000000e+00, 756 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 (1257 simplex iterations) in 0.31 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 08:44:20 2012 Optimize a model with 24703 rows, 5797 columns and 78288 nonzeros Presolve time: 0.10s Presolved: 24703 rows, 5797 columns, 78288 nonzeros Variable types: 0 continuous, 5797 integer (5797 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (826 simplex iterations) in 0.15 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 08:44:20 2012 Optimize a model with 12451 rows, 3409 columns and 39144 nonzeros Presolve time: 0.04s Presolved: 12451 rows, 3409 columns, 39144 nonzeros Variable types: 0 continuous, 3409 integer (3409 binary) Root relaxation: objective 0.000000e+00, 412 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 (792 simplex iterations) in 0.07 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 08:44:20 2012 Optimize a model with 6325 rows, 2215 columns and 19572 nonzeros Presolve time: 0.02s Presolved: 6325 rows, 2215 columns, 19572 nonzeros Variable types: 0 continuous, 2215 integer (2215 binary) Root relaxation: objective 0.000000e+00, 428 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 (2018 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 08:44:21 2012 Optimize a model with 3262 rows, 1618 columns and 9786 nonzeros Presolve time: 0.01s Presolved: 3262 rows, 1618 columns, 9786 nonzeros Variable types: 0 continuous, 1618 integer (1618 binary) Root relaxation: objective 0.000000e+00, 467 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 0 304 - 0.00000 - - 0s 0 0 0.00000 0 376 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (7418 simplex iterations) in 0.86 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 08:44:22 2012 Optimize a model with 4283 rows, 1817 columns and 13048 nonzeros Presolve time: 0.01s Presolved: 4283 rows, 1817 columns, 13048 nonzeros Variable types: 0 continuous, 1817 integer (1817 binary) Root relaxation: objective 0.000000e+00, 442 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 0 386 - 0.00000 - - 0s 0 0 0.00000 0 384 - 0.00000 - - 0s 0 0 0.00000 0 364 - 0.00000 - - 1s 0 0 0.00000 0 449 - 0.00000 - - 1s 0 0 0.00000 0 344 - 0.00000 - - 2s 0 0 0.00000 0 340 - 0.00000 - - 2s 0 0 0.00000 0 338 - 0.00000 - - 3s 0 0 0.00000 0 349 - 0.00000 - - 4s 0 0 0.00000 0 360 - 0.00000 - - 5s 0 0 0.00000 0 356 - 0.00000 - - 5s 0 0 0.00000 0 344 - 0.00000 - - 6s 0 0 0.00000 0 344 - 0.00000 - - 7s 0 0 0.00000 0 340 - 0.00000 - - 7s 0 0 0.00000 0 344 - 0.00000 - - 8s 0 0 0.00000 0 344 - 0.00000 - - 8s 0 2 0.00000 0 344 - 0.00000 - - 9s 23 19 infeasible 15 - 0.00000 - 316 10s 355 58 0.00000 11 360 - 0.00000 - 185 15s 605 111 0.00000 7 354 - 0.00000 - 171 22s 607 112 0.00000 17 344 - 0.00000 - 170 26s 609 113 0.00000 7 342 - 0.00000 - 169 31s 611 115 0.00000 15 332 - 0.00000 - 169 35s 616 118 infeasible 12 - 0.00000 - 259 40s 806 71 0.00000 17 462 - 0.00000 - 261 45s 989 12 infeasible 22 - 0.00000 - 268 50s Cutting planes: Zero half: 18 Explored 1118 nodes (367748 simplex iterations) in 53.98 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 08:45:16 2012 Optimize a model with 5304 rows, 2016 columns and 16310 nonzeros Presolve time: 0.01s Presolved: 5304 rows, 2016 columns, 16310 nonzeros Variable types: 0 continuous, 2016 integer (2016 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 0.00000 0 372 - 0.00000 - - 0s 0 0 0.00000 0 364 - 0.00000 - - 0s 0 0 0.00000 0 366 - 0.00000 - - 0s 0 0 0.00000 0 362 - 0.00000 - - 0s 0 0 0.00000 0 402 - 0.00000 - - 1s 0 0 0.00000 0 332 - 0.00000 - - 1s 0 0 0.00000 0 326 - 0.00000 - - 1s * 0 0 0 0.0000000 0.00000 0.0% - 1s Cutting planes: Zero half: 199 Explored 0 nodes (16331 simplex iterations) in 1.81 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