current bounds on the number of colors: 0 -- 97 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:00 2012 Optimize a model with 2401 rows, 4704 columns and 11568 nonzeros Presolve removed 38 rows and 1824 columns Presolve time: 0.03s Presolved: 2363 rows, 2880 columns, 9744 nonzeros Variable types: 0 continuous, 2880 integer (2880 binary) Root relaxation: objective 0.000000e+00, 104 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 (104 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 -- 48 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:00 2012 Optimize a model with 1249 rows, 2376 columns and 5784 nonzeros Presolve removed 38 rows and 912 columns Presolve time: 0.01s Presolved: 1211 rows, 1464 columns, 4872 nonzeros Variable types: 0 continuous, 1464 integer (1464 binary) Root relaxation: objective 0.000000e+00, 102 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 (102 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 -- 24 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:00 2012 Optimize a model with 673 rows, 1212 columns and 2892 nonzeros Presolve removed 38 rows and 456 columns Presolve time: 0.00s Presolved: 635 rows, 756 columns, 2436 nonzeros Variable types: 0 continuous, 756 integer (756 binary) Root relaxation: objective 0.000000e+00, 105 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 (105 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:15:00 2012 Optimize a model with 385 rows, 630 columns and 1446 nonzeros Presolve removed 38 rows and 228 columns Presolve time: 0.00s Presolved: 347 rows, 402 columns, 1218 nonzeros Variable types: 0 continuous, 402 integer (402 binary) Root relaxation: objective 0.000000e+00, 94 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 (94 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 16:15:00 2012 Optimize a model with 241 rows, 339 columns and 723 nonzeros Presolve removed 38 rows and 114 columns Presolve time: 0.00s Presolved: 203 rows, 225 columns, 609 nonzeros Variable types: 0 continuous, 225 integer (225 binary) Root relaxation: objective 0.000000e+00, 81 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 (81 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 16:15:00 2012 Optimize a model with 145 rows, 145 columns and 241 nonzeros Presolve removed 145 rows and 145 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 16:15:00 2012 Optimize a model with 193 rows, 242 columns and 482 nonzeros Presolve removed 107 rows and 150 columns Presolve time: 0.00s Presolved: 86 rows, 92 columns, 258 nonzeros Variable types: 0 continuous, 92 integer (92 binary) Root relaxation: objective 0.000000e+00, 40 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 14 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (125 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 - optimal solution found: number of colors: 3