current bounds on the number of colors: 0 -- 206 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:51 2012 Optimize a model with 22557 rows, 21435 columns and 88271 nonzeros Presolve removed 23 rows and 2369 columns Presolve time: 0.14s Presolved: 22534 rows, 19066 columns, 85902 nonzeros Variable types: 0 continuous, 19066 integer (19066 binary) Root relaxation: objective 0.000000e+00, 333 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 (333 simplex iterations) in 0.16 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 -- 103 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:51 2012 Optimize a model with 11273 rows, 10723 columns and 43707 nonzeros Presolve removed 23 rows and 1173 columns Presolve time: 0.10s Presolved: 11250 rows, 9550 columns, 42534 nonzeros Variable types: 0 continuous, 9550 integer (9550 binary) Root relaxation: objective 0.000000e+00, 334 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 (334 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 -- 51 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:51 2012 Optimize a model with 5631 rows, 5367 columns and 21425 nonzeros Presolve removed 23 rows and 575 columns Presolve time: 0.03s Presolved: 5608 rows, 4792 columns, 20850 nonzeros Variable types: 0 continuous, 4792 integer (4792 binary) Root relaxation: objective 0.000000e+00, 335 iterations, 0.00 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 (335 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 -- 25 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:52 2012 Optimize a model with 2810 rows, 2689 columns and 10284 nonzeros Presolve removed 23 rows and 276 columns Presolve time: 0.01s Presolved: 2787 rows, 2413 columns, 10008 nonzeros Variable types: 0 continuous, 2413 integer (2413 binary) Root relaxation: objective 0.000000e+00, 339 iterations, 0.00 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 (512 simplex iterations) in 0.02 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 16:31:52 2012 Optimize a model with 1508 rows, 1453 columns and 5142 nonzeros Presolve removed 23 rows and 138 columns Presolve time: 0.01s Presolved: 1485 rows, 1315 columns, 5004 nonzeros Variable types: 0 continuous, 1315 integer (1315 binary) Root relaxation: objective 0.000000e+00, 322 iterations, 0.00 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 (322 simplex iterations) in 0.01 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 16:31:52 2012 Optimize a model with 857 rows, 835 columns and 2571 nonzeros Presolve removed 23 rows and 69 columns Presolve time: 0.00s Presolved: 834 rows, 766 columns, 2502 nonzeros Variable types: 0 continuous, 766 integer (766 binary) Root relaxation: objective 0.000000e+00, 338 iterations, 0.00 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 (518 simplex iterations) in 0.01 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:52 2012 Optimize a model with 423 rows, 423 columns and 857 nonzeros Presolve removed 423 rows and 423 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 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: 1 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:52 2012 Optimize a model with 640 rows, 629 columns and 1714 nonzeros Presolve removed 212 rows and 238 columns Presolve time: 0.00s Presolved: 428 rows, 391 columns, 1284 nonzeros Variable types: 0 continuous, 391 integer (391 binary) Root relaxation: objective 0.000000e+00, 217 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 0 177 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (666 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - optimal solution found: number of colors: 3