current bounds on the number of colors: 0 -- 234 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:25 2012 Optimize a model with 32409 rows, 27653 columns and 123903 nonzeros Presolve removed 23 rows and 2691 columns Presolve time: 0.14s Presolved: 32386 rows, 24962 columns, 121212 nonzeros Variable types: 0 continuous, 24962 integer (24962 binary) Root relaxation: objective 0.000000e+00, 398 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 (398 simplex iterations) in 0.17 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 16:41:26 2012 Optimize a model with 16184 rows, 13847 columns and 61422 nonzeros Presolve removed 23 rows and 1334 columns Presolve time: 0.12s Presolved: 16161 rows, 12513 columns, 60088 nonzeros Variable types: 0 continuous, 12513 integer (12513 binary) Root relaxation: objective 0.000000e+00, 397 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 (397 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 16:41:26 2012 Optimize a model with 8209 rows, 7061 columns and 30711 nonzeros Presolve removed 23 rows and 667 columns Presolve time: 0.05s Presolved: 8186 rows, 6394 columns, 30044 nonzeros Variable types: 0 continuous, 6394 integer (6394 binary) Root relaxation: objective 0.000000e+00, 401 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 (401 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 16:41:26 2012 Optimize a model with 4084 rows, 3551 columns and 14826 nonzeros Presolve removed 23 rows and 322 columns Presolve time: 0.02s Presolved: 4061 rows, 3229 columns, 14504 nonzeros Variable types: 0 continuous, 3229 integer (3229 binary) Root relaxation: objective 0.000000e+00, 411 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 (627 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 16:41:26 2012 Optimize a model with 2159 rows, 1913 columns and 7413 nonzeros Presolve removed 23 rows and 161 columns Presolve time: 0.01s Presolved: 2136 rows, 1752 columns, 7252 nonzeros Variable types: 0 continuous, 1752 integer (1752 binary) Root relaxation: objective 0.000000e+00, 401 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 (401 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 16:41:26 2012 Optimize a model with 1059 rows, 977 columns and 3177 nonzeros Presolve removed 23 rows and 69 columns Presolve time: 0.00s Presolved: 1036 rows, 908 columns, 3108 nonzeros Variable types: 0 continuous, 908 integer (908 binary) Root relaxation: objective 0.000000e+00, 434 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 (614 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 16:41:26 2012 Optimize a model with 509 rows, 509 columns and 1059 nonzeros Presolve removed 509 rows and 509 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 16:41:26 2012 Optimize a model with 784 rows, 743 columns and 2118 nonzeros Presolve removed 236 rows and 260 columns Presolve time: 0.00s Presolved: 548 rows, 483 columns, 1644 nonzeros Variable types: 0 continuous, 483 integer (483 binary) Root relaxation: objective 0.000000e+00, 230 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 0 199 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (753 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