current bounds on the number of colors: 0 -- 219 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:35:57 2012 Optimize a model with 27251 rows, 24119 columns and 104967 nonzeros Presolve removed 22 rows and 2398 columns Presolve time: 0.14s Presolved: 27229 rows, 21721 columns, 102569 nonzeros Variable types: 0 continuous, 21721 integer (21721 binary) Root relaxation: objective 0.000000e+00, 358 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 (358 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 -- 109 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:35:57 2012 Optimize a model with 13611 rows, 12074 columns and 52002 nonzeros Presolve removed 22 rows and 1188 columns Presolve time: 0.13s Presolved: 13589 rows, 10886 columns, 50814 nonzeros Variable types: 0 continuous, 10886 integer (10886 binary) Root relaxation: objective 0.000000e+00, 359 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 (359 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 -- 54 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:35:58 2012 Optimize a model with 6915 rows, 6161 columns and 26001 nonzeros Presolve removed 22 rows and 594 columns Presolve time: 0.04s Presolved: 6893 rows, 5567 columns, 25407 nonzeros Variable types: 0 continuous, 5567 integer (5567 binary) Root relaxation: objective 0.000000e+00, 362 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 (362 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 16:35:58 2012 Optimize a model with 3443 rows, 3095 columns and 12519 nonzeros Presolve removed 22 rows and 286 columns Presolve time: 0.02s Presolved: 3421 rows, 2809 columns, 12233 nonzeros Variable types: 0 continuous, 2809 integer (2809 binary) Root relaxation: objective 0.000000e+00, 355 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 (355 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 16:35:58 2012 Optimize a model with 1707 rows, 1562 columns and 5778 nonzeros Presolve removed 22 rows and 132 columns Presolve time: 0.01s Presolved: 1685 rows, 1430 columns, 5646 nonzeros Variable types: 0 continuous, 1430 integer (1430 binary) Root relaxation: objective 0.000000e+00, 373 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 (544 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 16:35:58 2012 Optimize a model with 963 rows, 905 columns and 2889 nonzeros Presolve removed 22 rows and 66 columns Presolve time: 0.00s Presolved: 941 rows, 839 columns, 2823 nonzeros Variable types: 0 continuous, 839 integer (839 binary) Root relaxation: objective 0.000000e+00, 405 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 (657 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 16:35:58 2012 Optimize a model with 467 rows, 467 columns and 963 nonzeros Presolve removed 467 rows and 467 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 16:35:58 2012 Optimize a model with 715 rows, 686 columns and 1926 nonzeros Presolve removed 231 rows and 259 columns Presolve time: 0.00s Presolved: 484 rows, 427 columns, 1452 nonzeros Variable types: 0 continuous, 427 integer (427 binary) Root relaxation: objective 0.000000e+00, 218 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 0 185 - 0.00000 - - 0s Explored 0 nodes (712 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