current bounds on the number of colors: 0 -- 105 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:28 2012 Optimize a model with 3173 rows, 5519 columns and 14664 nonzeros Presolve removed 33 rows and 1716 columns Presolve time: 0.04s Presolved: 3140 rows, 3803 columns, 12948 nonzeros Variable types: 0 continuous, 3803 integer (3803 binary) Root relaxation: objective 0.000000e+00, 120 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 (120 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 -- 52 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:28 2012 Optimize a model with 1639 rows, 2789 columns and 7332 nonzeros Presolve removed 33 rows and 858 columns Presolve time: 0.01s Presolved: 1606 rows, 1931 columns, 6474 nonzeros Variable types: 0 continuous, 1931 integer (1931 binary) Root relaxation: objective 0.000000e+00, 120 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 (120 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 -- 26 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:28 2012 Optimize a model with 872 rows, 1424 columns and 3666 nonzeros Presolve removed 33 rows and 429 columns Presolve time: 0.00s Presolved: 839 rows, 995 columns, 3237 nonzeros Variable types: 0 continuous, 995 integer (995 binary) Root relaxation: objective 0.000000e+00, 119 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 (119 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:28 2012 Optimize a model with 459 rows, 689 columns and 1692 nonzeros Presolve removed 33 rows and 198 columns Presolve time: 0.00s Presolved: 426 rows, 491 columns, 1494 nonzeros Variable types: 0 continuous, 491 integer (491 binary) Root relaxation: objective 0.000000e+00, 116 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 (116 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 16:15:28 2012 Optimize a model with 282 rows, 374 columns and 846 nonzeros Presolve removed 33 rows and 99 columns Presolve time: 0.00s Presolved: 249 rows, 275 columns, 747 nonzeros Variable types: 0 continuous, 275 integer (275 binary) Root relaxation: objective 0.000000e+00, 106 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 (106 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 16:15:28 2012 Optimize a model with 164 rows, 164 columns and 282 nonzeros Presolve removed 164 rows and 164 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 16:15:28 2012 Optimize a model with 223 rows, 269 columns and 564 nonzeros Presolve removed 121 rows and 162 columns Presolve time: 0.00s Presolved: 102 rows, 107 columns, 306 nonzeros Variable types: 0 continuous, 107 integer (107 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% optimal solution found: number of colors: 2