current bounds on the number of colors: 0 -- 232 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:54 2012 Optimize a model with 32944 rows, 27194 columns and 125048 nonzeros Presolve removed 23 rows and 2668 columns Presolve time: 0.16s Presolved: 32921 rows, 24526 columns, 122380 nonzeros Variable types: 0 continuous, 24526 integer (24526 binary) Root relaxation: objective 0.000000e+00, 407 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 (606 simplex iterations) in 0.22 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 -- 116 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:54 2012 Optimize a model with 16588 rows, 13738 columns and 62524 nonzeros Presolve removed 23 rows and 1334 columns Presolve time: 0.12s Presolved: 16565 rows, 12404 columns, 61190 nonzeros Variable types: 0 continuous, 12404 integer (12404 binary) Root relaxation: objective 0.000000e+00, 395 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 (395 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 16:40:55 2012 Optimize a model with 8410 rows, 7010 columns and 31262 nonzeros Presolve removed 23 rows and 667 columns Presolve time: 0.05s Presolved: 8387 rows, 6343 columns, 30595 nonzeros Variable types: 0 continuous, 6343 integer (6343 binary) Root relaxation: objective 0.000000e+00, 407 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 (407 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 16:40:55 2012 Optimize a model with 4180 rows, 3530 columns and 15092 nonzeros Presolve removed 23 rows and 322 columns Presolve time: 0.02s Presolved: 4157 rows, 3208 columns, 14770 nonzeros Variable types: 0 continuous, 3208 integer (3208 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 0.02 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 16:40:55 2012 Optimize a model with 2206 rows, 1906 columns and 7546 nonzeros Presolve removed 23 rows and 161 columns Presolve time: 0.01s Presolved: 2183 rows, 1745 columns, 7385 nonzeros Variable types: 0 continuous, 1745 integer (1745 binary) Root relaxation: objective 0.000000e+00, 404 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 (598 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 16:40:55 2012 Optimize a model with 1078 rows, 978 columns and 3234 nonzeros Presolve removed 23 rows and 69 columns Presolve time: 0.00s Presolved: 1055 rows, 909 columns, 3165 nonzeros Variable types: 0 continuous, 909 integer (909 binary) Root relaxation: objective 0.000000e+00, 447 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 (653 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 16:40:55 2012 Optimize a model with 514 rows, 514 columns and 1078 nonzeros Presolve removed 514 rows and 514 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 16:40:55 2012 Optimize a model with 796 rows, 746 columns and 2156 nonzeros Presolve removed 244 rows and 273 columns Presolve time: 0.00s Presolved: 552 rows, 473 columns, 1656 nonzeros Variable types: 0 continuous, 473 integer (473 binary) Root relaxation: objective 0.000000e+00, 219 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 0 197 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (786 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