current bounds on the number of colors: 0 -- 85 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:25 2012 Optimize a model with 1429 rows, 3602 columns and 7602 nonzeros Presolve removed 45 rows and 1890 columns Presolve time: 0.02s Presolved: 1384 rows, 1712 columns, 5712 nonzeros Variable types: 0 continuous, 1712 integer (1712 binary) Root relaxation: objective 0.000000e+00, 65 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 (65 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 -- 42 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:25 2012 Optimize a model with 757 rows, 1817 columns and 3801 nonzeros Presolve removed 45 rows and 945 columns Presolve time: 0.01s Presolved: 712 rows, 872 columns, 2856 nonzeros Variable types: 0 continuous, 872 integer (872 binary) Root relaxation: objective 0.000000e+00, 65 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 (65 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 -- 21 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:25 2012 Optimize a model with 405 rows, 882 columns and 1810 nonzeros Presolve removed 45 rows and 450 columns Presolve time: 0.00s Presolved: 360 rows, 432 columns, 1360 nonzeros Variable types: 0 continuous, 432 integer (432 binary) Root relaxation: objective 0.000000e+00, 64 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 (64 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 -- 10 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:25 2012 Optimize a model with 245 rows, 457 columns and 905 nonzeros Presolve removed 45 rows and 225 columns Presolve time: 0.00s Presolved: 200 rows, 232 columns, 680 nonzeros Variable types: 0 continuous, 232 integer (232 binary) Root relaxation: objective 0.000000e+00, 64 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 (64 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:14:25 2012 Optimize a model with 149 rows, 202 columns and 362 nonzeros Presolve removed 95 rows and 145 columns Presolve time: 0.00s Presolved: 54 rows, 57 columns, 162 nonzeros Variable types: 0 continuous, 57 integer (57 binary) Root relaxation: objective 0.000000e+00, 20 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 (20 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 16:14:25 2012 Optimize a model with 117 rows, 117 columns and 181 nonzeros Presolve removed 117 rows and 117 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