current bounds on the number of colors: 0 -- 243 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:21 2012 Optimize a model with 39084 rows, 29724 columns and 145926 nonzeros Presolve removed 19 rows and 2299 columns Presolve time: 0.19s Presolved: 39065 rows, 27425 columns, 143627 nonzeros Variable types: 0 continuous, 27425 integer (27425 binary) Root relaxation: objective 0.000000e+00, 439 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 (439 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 -- 121 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:21 2012 Optimize a model with 19503 rows, 14901 columns and 72360 nonzeros Presolve removed 19 rows and 1140 columns Presolve time: 0.13s Presolved: 19484 rows, 13761 columns, 71220 nonzeros Variable types: 0 continuous, 13761 integer (13761 binary) Root relaxation: objective 0.000000e+00, 430 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 (430 simplex iterations) in 0.15 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 -- 60 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:22 2012 Optimize a model with 9873 rows, 7611 columns and 36180 nonzeros Presolve removed 19 rows and 570 columns Presolve time: 0.06s Presolved: 9854 rows, 7041 columns, 35610 nonzeros Variable types: 0 continuous, 7041 integer (7041 binary) Root relaxation: objective 0.000000e+00, 436 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 (436 simplex iterations) in 0.07 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 16:45:22 2012 Optimize a model with 5058 rows, 3966 columns and 18090 nonzeros Presolve removed 19 rows and 285 columns Presolve time: 0.02s Presolved: 5039 rows, 3681 columns, 17805 nonzeros Variable types: 0 continuous, 3681 integer (3681 binary) Root relaxation: objective 0.000000e+00, 475 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 (765 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 16:45:22 2012 Optimize a model with 2490 rows, 2022 columns and 8442 nonzeros Presolve removed 19 rows and 133 columns Presolve time: 0.01s Presolved: 2471 rows, 1889 columns, 8309 nonzeros Variable types: 0 continuous, 1889 integer (1889 binary) Root relaxation: objective 0.000000e+00, 412 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 (412 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 16:45:22 2012 Optimize a model with 1206 rows, 1050 columns and 3618 nonzeros Presolve removed 19 rows and 57 columns Presolve time: 0.00s Presolved: 1187 rows, 993 columns, 3561 nonzeros Variable types: 0 continuous, 993 integer (993 binary) Root relaxation: objective 0.000000e+00, 465 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 (669 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 16:45:22 2012 Optimize a model with 564 rows, 564 columns and 1206 nonzeros Presolve removed 564 rows and 564 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 16:45:22 2012 Optimize a model with 885 rows, 807 columns and 2412 nonzeros Presolve removed 245 rows and 265 columns Presolve time: 0.00s Presolved: 640 rows, 542 columns, 1920 nonzeros Variable types: 0 continuous, 542 integer (542 binary) Root relaxation: objective 0.000000e+00, 257 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 0 222 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (861 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