current bounds on the number of colors: 0 -- 65 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:43 2012 Optimize a model with 737 rows, 2101 columns and 4096 nonzeros Presolve removed 37 rows and 1184 columns Presolve time: 0.01s Presolved: 700 rows, 917 columns, 2912 nonzeros Variable types: 0 continuous, 917 integer (917 binary) Root relaxation: objective 0.000000e+00, 48 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 (48 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 -- 32 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:43 2012 Optimize a model with 401 rows, 1061 columns and 2048 nonzeros Presolve removed 37 rows and 592 columns Presolve time: 0.00s Presolved: 364 rows, 469 columns, 1456 nonzeros Variable types: 0 continuous, 469 integer (469 binary) Root relaxation: objective 0.000000e+00, 48 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 (48 simplex iterations) in 0.00 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 -- 16 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:43 2012 Optimize a model with 233 rows, 541 columns and 1024 nonzeros Presolve removed 37 rows and 296 columns Presolve time: 0.00s Presolved: 196 rows, 245 columns, 728 nonzeros Variable types: 0 continuous, 245 integer (245 binary) Root relaxation: objective 0.000000e+00, 46 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 (46 simplex iterations) in 0.00 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 -- 8 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:43 2012 Optimize a model with 149 rows, 281 columns and 512 nonzeros Presolve removed 37 rows and 148 columns Presolve time: 0.00s Presolved: 112 rows, 133 columns, 364 nonzeros Variable types: 0 continuous, 133 integer (133 binary) Root relaxation: objective 0.000000e+00, 40 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 (40 simplex iterations) in 0.00 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:43 2012 Optimize a model with 107 rows, 151 columns and 256 nonzeros Presolve removed 73 rows and 114 columns Presolve time: 0.00s Presolved: 34 rows, 37 columns, 102 nonzeros Variable types: 0 continuous, 37 integer (37 binary) Root relaxation: objective 0.000000e+00, 16 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 (16 simplex iterations) in 0.00 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 -- 2 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:13:43 2012 Optimize a model with 86 rows, 86 columns and 128 nonzeros Presolve removed 86 rows and 86 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 - optimal solution found: number of colors: 2