current bounds on the number of colors: 0 -- 235 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:11 2012 Optimize a model with 34867 rows, 27791 columns and 131391 nonzeros Presolve removed 14 rows and 1638 columns Presolve time: 0.17s Presolved: 34853 rows, 26153 columns, 129753 nonzeros Variable types: 0 continuous, 26153 integer (26153 binary) Root relaxation: objective 0.000000e+00, 400 iterations, 0.01 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 (400 simplex iterations) in 0.20 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 -- 117 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:12 2012 Optimize a model with 17403 rows, 13926 columns and 65134 nonzeros Presolve removed 14 rows and 812 columns Presolve time: 0.12s Presolved: 17389 rows, 13114 columns, 64322 nonzeros Variable types: 0 continuous, 13114 integer (13114 binary) Root relaxation: objective 0.000000e+00, 400 iterations, 0.01 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 (400 simplex iterations) in 0.14 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 -- 58 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:13 2012 Optimize a model with 8819 rows, 7111 columns and 32567 nonzeros Presolve removed 14 rows and 406 columns Presolve time: 0.05s Presolved: 8805 rows, 6705 columns, 32161 nonzeros Variable types: 0 continuous, 6705 integer (6705 binary) Root relaxation: objective 0.000000e+00, 402 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 (402 simplex iterations) in 0.06 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 -- 29 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:13 2012 Optimize a model with 4379 rows, 3586 columns and 15722 nonzeros Presolve removed 14 rows and 196 columns Presolve time: 0.02s Presolved: 4365 rows, 3390 columns, 15526 nonzeros Variable types: 0 continuous, 3390 integer (3390 binary) Root relaxation: objective 0.000000e+00, 414 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 (414 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:13 2012 Optimize a model with 2307 rows, 1941 columns and 7861 nonzeros Presolve removed 14 rows and 98 columns Presolve time: 0.01s Presolved: 2293 rows, 1843 columns, 7763 nonzeros Variable types: 0 continuous, 1843 integer (1843 binary) Root relaxation: objective 0.000000e+00, 446 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 (446 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:13 2012 Optimize a model with 1123 rows, 1001 columns and 3369 nonzeros Presolve removed 14 rows and 42 columns Presolve time: 0.00s Presolved: 1109 rows, 959 columns, 3327 nonzeros Variable types: 0 continuous, 959 integer (959 binary) Root relaxation: objective 0.000000e+00, 441 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 (441 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:13 2012 Optimize a model with 531 rows, 531 columns and 1123 nonzeros Presolve removed 531 rows and 531 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 16:42:13 2012 Optimize a model with 827 rows, 766 columns and 2246 nonzeros Presolve removed 241 rows and 258 columns Presolve time: 0.00s Presolved: 586 rows, 508 columns, 1758 nonzeros Variable types: 0 continuous, 508 integer (508 binary) Root relaxation: objective 0.000000e+00, 247 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 0 215 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (747 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - optimal solution found: number of colors: 3