current bounds on the number of colors: 0 -- 131 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:32 2012 Optimize a model with 6371 rows, 8611 columns and 27235 nonzeros Presolve removed 26 rows and 1690 columns Presolve time: 0.08s Presolved: 6345 rows, 6921 columns, 25545 nonzeros Variable types: 0 continuous, 6921 integer (6921 binary) Root relaxation: objective 0.000000e+00, 186 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 (186 simplex iterations) in 0.09 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 -- 65 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:32 2012 Optimize a model with 3203 rows, 4288 columns and 13408 nonzeros Presolve removed 26 rows and 832 columns Presolve time: 0.03s Presolved: 3177 rows, 3456 columns, 12576 nonzeros Variable types: 0 continuous, 3456 integer (3456 binary) Root relaxation: objective 0.000000e+00, 186 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 (186 simplex iterations) in 0.03 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 16:17:32 2012 Optimize a model with 1667 rows, 2192 columns and 6704 nonzeros Presolve removed 26 rows and 416 columns Presolve time: 0.01s Presolved: 1641 rows, 1776 columns, 6288 nonzeros Variable types: 0 continuous, 1776 integer (1776 binary) Root relaxation: objective 0.000000e+00, 186 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 (265 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 -- 16 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:32 2012 Optimize a model with 899 rows, 1144 columns and 3352 nonzeros Presolve removed 26 rows and 208 columns Presolve time: 0.00s Presolved: 873 rows, 936 columns, 3144 nonzeros Variable types: 0 continuous, 936 integer (936 binary) Root relaxation: objective 0.000000e+00, 177 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 (177 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 -- 8 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:32 2012 Optimize a model with 515 rows, 620 columns and 1676 nonzeros Presolve removed 26 rows and 104 columns Presolve time: 0.00s Presolved: 489 rows, 516 columns, 1572 nonzeros Variable types: 0 continuous, 516 integer (516 binary) Root relaxation: objective 0.000000e+00, 156 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 (156 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 16:17:32 2012 Optimize a model with 323 rows, 358 columns and 838 nonzeros Presolve removed 149 rows and 184 columns Presolve time: 0.00s Presolved: 174 rows, 174 columns, 522 nonzeros Variable types: 0 continuous, 174 integer (174 binary) Root relaxation: objective 0.000000e+00, 88 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 64 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (263 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - current bounds on the number of colors: 2 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:32 2012 Optimize a model with 419 rows, 489 columns and 1257 nonzeros Presolve removed 26 rows and 78 columns Presolve time: 0.00s Presolved: 393 rows, 411 columns, 1179 nonzeros Variable types: 0 continuous, 411 integer (411 binary) Root relaxation: objective 0.000000e+00, 148 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 (148 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: 3