current bounds on the number of colors: 0 -- 102 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:15 2012 Optimize a model with 3213 rows, 5263 columns and 14535 nonzeros Presolve removed 34 rows and 1734 columns Presolve time: 0.03s Presolved: 3179 rows, 3529 columns, 12801 nonzeros Variable types: 0 continuous, 3529 integer (3529 binary) Root relaxation: objective 0.000000e+00, 115 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 (115 simplex iterations) in 0.04 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 -- 51 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:15 2012 Optimize a model with 1627 rows, 2611 columns and 7125 nonzeros Presolve removed 34 rows and 850 columns Presolve time: 0.01s Presolved: 1593 rows, 1761 columns, 6275 nonzeros Variable types: 0 continuous, 1761 integer (1761 binary) Root relaxation: objective 0.000000e+00, 117 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 (117 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 -- 25 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:15 2012 Optimize a model with 834 rows, 1285 columns and 3420 nonzeros Presolve removed 34 rows and 408 columns Presolve time: 0.00s Presolved: 800 rows, 877 columns, 3012 nonzeros Variable types: 0 continuous, 877 integer (877 binary) Root relaxation: objective 0.000000e+00, 117 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 (117 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:15 2012 Optimize a model with 468 rows, 673 columns and 1710 nonzeros Presolve removed 34 rows and 204 columns Presolve time: 0.00s Presolved: 434 rows, 469 columns, 1506 nonzeros Variable types: 0 continuous, 469 integer (469 binary) Root relaxation: objective 0.000000e+00, 111 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 (111 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:15 2012 Optimize a model with 285 rows, 367 columns and 855 nonzeros Presolve removed 34 rows and 102 columns Presolve time: 0.00s Presolved: 251 rows, 265 columns, 753 nonzeros Variable types: 0 continuous, 265 integer (265 binary) Root relaxation: objective 0.000000e+00, 103 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 (103 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:15 2012 Optimize a model with 163 rows, 163 columns and 285 nonzeros Presolve removed 163 rows and 163 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 16:15:15 2012 Optimize a model with 224 rows, 265 columns and 570 nonzeros Presolve removed 106 rows and 142 columns Presolve time: 0.00s Presolved: 118 rows, 123 columns, 354 nonzeros Variable types: 0 continuous, 123 integer (123 binary) Root relaxation: objective 0.000000e+00, 53 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 (53 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% optimal solution found: number of colors: 2