current bounds on the number of colors: 0 -- 245 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:09 2012 Optimize a model with 40993 rows, 30224 columns and 152134 nonzeros Presolve removed 18 rows and 2196 columns Presolve time: 0.20s Presolved: 40975 rows, 28028 columns, 149938 nonzeros Variable types: 0 continuous, 28028 integer (28028 binary) Root relaxation: objective 0.000000e+00, 476 iterations, 0.02 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 (728 simplex iterations) in 0.27 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 -- 122 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:10 2012 Optimize a model with 20619 rows, 15279 columns and 76067 nonzeros Presolve removed 18 rows and 1098 columns Presolve time: 0.13s Presolved: 20601 rows, 14181 columns, 74969 nonzeros Variable types: 0 continuous, 14181 integer (14181 binary) Root relaxation: objective 0.000000e+00, 472 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 (721 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 -- 61 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:10 2012 Optimize a model with 10265 rows, 7684 columns and 37410 nonzeros Presolve removed 18 rows and 540 columns Presolve time: 0.06s Presolved: 10247 rows, 7144 columns, 36870 nonzeros Variable types: 0 continuous, 7144 integer (7144 binary) Root relaxation: objective 0.000000e+00, 483 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 (778 simplex iterations) in 0.08 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 -- 30 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:11 2012 Optimize a model with 5255 rows, 4009 columns and 18705 nonzeros Presolve removed 18 rows and 270 columns Presolve time: 0.02s Presolved: 5237 rows, 3739 columns, 18435 nonzeros Variable types: 0 continuous, 3739 integer (3739 binary) Root relaxation: objective 0.000000e+00, 475 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 (753 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:11 2012 Optimize a model with 2583 rows, 2049 columns and 8729 nonzeros Presolve removed 18 rows and 126 columns Presolve time: 0.01s Presolved: 2565 rows, 1923 columns, 8603 nonzeros Variable types: 0 continuous, 1923 integer (1923 binary) Root relaxation: objective 0.000000e+00, 457 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 (681 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:11 2012 Optimize a model with 1247 rows, 1069 columns and 3741 nonzeros Presolve removed 18 rows and 54 columns Presolve time: 0.00s Presolved: 1229 rows, 1015 columns, 3687 nonzeros Variable types: 0 continuous, 1015 integer (1015 binary) Root relaxation: objective 0.000000e+00, 495 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 8 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (881 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:11 2012 Optimize a model with 579 rows, 579 columns and 1247 nonzeros Presolve removed 579 rows and 579 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 16:46:11 2012 Optimize a model with 913 rows, 824 columns and 2494 nonzeros Presolve removed 247 rows and 266 columns Presolve time: 0.00s Presolved: 666 rows, 558 columns, 1998 nonzeros Variable types: 0 continuous, 558 integer (558 binary) Root relaxation: objective 0.000000e+00, 246 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 0 225 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (850 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