current bounds on the number of colors: 0 -- 223 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:26 2012 Optimize a model with 27973 rows, 25003 columns and 108003 nonzeros Presolve removed 15 rows and 1665 columns Presolve time: 0.14s Presolved: 27958 rows, 23338 columns, 106338 nonzeros Variable types: 0 continuous, 23338 integer (23338 binary) Root relaxation: objective 0.000000e+00, 380 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 (380 simplex iterations) in 0.17 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 -- 111 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:27 2012 Optimize a model with 13973 rows, 12515 columns and 53515 nonzeros Presolve removed 15 rows and 825 columns Presolve time: 0.13s Presolved: 13958 rows, 11690 columns, 52690 nonzeros Variable types: 0 continuous, 11690 integer (11690 binary) Root relaxation: objective 0.000000e+00, 380 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 (380 simplex iterations) in 0.14 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 -- 55 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:27 2012 Optimize a model with 6973 rows, 6271 columns and 26271 nonzeros Presolve removed 15 rows and 405 columns Presolve time: 0.04s Presolved: 6958 rows, 5866 columns, 25866 nonzeros Variable types: 0 continuous, 5866 integer (5866 binary) Root relaxation: objective 0.000000e+00, 374 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 (374 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 -- 27 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:27 2012 Optimize a model with 3473 rows, 3149 columns and 12649 nonzeros Presolve removed 15 rows and 195 columns Presolve time: 0.02s Presolved: 3458 rows, 2954 columns, 12454 nonzeros Variable types: 0 continuous, 2954 integer (2954 binary) Root relaxation: objective 0.000000e+00, 391 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 (391 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:27 2012 Optimize a model with 1723 rows, 1588 columns and 5838 nonzeros Presolve removed 15 rows and 90 columns Presolve time: 0.01s Presolved: 1708 rows, 1498 columns, 5748 nonzeros Variable types: 0 continuous, 1498 integer (1498 binary) Root relaxation: objective 0.000000e+00, 367 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 (367 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 16:37:27 2012 Optimize a model with 973 rows, 919 columns and 2919 nonzeros Presolve removed 15 rows and 45 columns Presolve time: 0.00s Presolved: 958 rows, 874 columns, 2874 nonzeros Variable types: 0 continuous, 874 integer (874 binary) Root relaxation: objective 0.000000e+00, 382 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 (527 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 16:37:27 2012 Optimize a model with 473 rows, 473 columns and 973 nonzeros Presolve removed 473 rows and 473 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 16:37:27 2012 Optimize a model with 723 rows, 696 columns and 1946 nonzeros Presolve removed 225 rows and 241 columns Presolve time: 0.00s Presolved: 498 rows, 455 columns, 1494 nonzeros Variable types: 0 continuous, 455 integer (455 binary) Root relaxation: objective 0.000000e+00, 233 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 0 200 - 0.00000 - - 0s Explored 0 nodes (761 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