current bounds on the number of colors: 0 -- 214 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:34:10 2012 Optimize a model with 28355 rows, 23161 columns and 107321 nonzeros Presolve removed 16 rows and 1712 columns Presolve time: 0.13s Presolved: 28339 rows, 21449 columns, 105609 nonzeros Variable types: 0 continuous, 21449 integer (21449 binary) Root relaxation: objective 0.000000e+00, 365 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 (365 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 -- 107 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:34:10 2012 Optimize a model with 14153 rows, 11605 columns and 53159 nonzeros Presolve removed 16 rows and 848 columns Presolve time: 0.13s Presolved: 14137 rows, 10757 columns, 52311 nonzeros Variable types: 0 continuous, 10757 integer (10757 binary) Root relaxation: objective 0.000000e+00, 369 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 (369 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 -- 53 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:34:11 2012 Optimize a model with 7052 rows, 5827 columns and 26078 nonzeros Presolve removed 16 rows and 416 columns Presolve time: 0.04s Presolved: 7036 rows, 5411 columns, 25662 nonzeros Variable types: 0 continuous, 5411 integer (5411 binary) Root relaxation: objective 0.000000e+00, 361 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 (361 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 -- 26 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:34:11 2012 Optimize a model with 3633 rows, 3045 columns and 13039 nonzeros Presolve removed 16 rows and 208 columns Presolve time: 0.02s Presolved: 3617 rows, 2837 columns, 12831 nonzeros Variable types: 0 continuous, 2837 integer (2837 binary) Root relaxation: objective 0.000000e+00, 368 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 (368 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 16:34:11 2012 Optimize a model with 1792 rows, 1547 columns and 6018 nonzeros Presolve removed 16 rows and 96 columns Presolve time: 0.01s Presolved: 1776 rows, 1451 columns, 5922 nonzeros Variable types: 0 continuous, 1451 integer (1451 binary) Root relaxation: objective 0.000000e+00, 379 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 (561 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 16:34:11 2012 Optimize a model with 1003 rows, 905 columns and 3009 nonzeros Presolve removed 16 rows and 48 columns Presolve time: 0.00s Presolved: 987 rows, 857 columns, 2961 nonzeros Variable types: 0 continuous, 857 integer (857 binary) Root relaxation: objective 0.000000e+00, 403 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 (630 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 16:34:11 2012 Optimize a model with 477 rows, 477 columns and 1003 nonzeros Presolve removed 477 rows and 477 columns Presolve time: 0.01s Explored 0 nodes (0 simplex iterations) in 0.01 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 16:34:11 2012 Optimize a model with 740 rows, 691 columns and 2006 nonzeros Presolve removed 216 rows and 233 columns Presolve time: 0.00s Presolved: 524 rows, 458 columns, 1572 nonzeros Variable types: 0 continuous, 458 integer (458 binary) Root relaxation: objective 0.000000e+00, 226 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 0 196 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (723 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