current bounds on the number of colors: 0 -- 229 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:27 2012 Optimize a model with 30667 rows, 26373 columns and 117420 nonzeros Presolve removed 24 rows and 2736 columns Presolve time: 0.15s Presolved: 30643 rows, 23637 columns, 114684 nonzeros Variable types: 0 continuous, 23637 integer (23637 binary) Root relaxation: objective 0.000000e+00, 385 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 (385 simplex iterations) in 0.18 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 -- 114 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:28 2012 Optimize a model with 15448 rows, 13320 columns and 58710 nonzeros Presolve removed 24 rows and 1368 columns Presolve time: 0.12s Presolved: 15424 rows, 11952 columns, 57342 nonzeros Variable types: 0 continuous, 11952 integer (11952 binary) Root relaxation: objective 0.000000e+00, 388 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 (388 simplex iterations) in 0.13 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 -- 57 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:28 2012 Optimize a model with 7705 rows, 6679 columns and 28840 nonzeros Presolve removed 24 rows and 672 columns Presolve time: 0.05s Presolved: 7681 rows, 6007 columns, 28168 nonzeros Variable types: 0 continuous, 6007 integer (6007 binary) Root relaxation: objective 0.000000e+00, 385 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 (385 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 -- 28 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:28 2012 Optimize a model with 3967 rows, 3473 columns and 14420 nonzeros Presolve removed 24 rows and 336 columns Presolve time: 0.02s Presolved: 3943 rows, 3137 columns, 14084 nonzeros Variable types: 0 continuous, 3137 integer (3137 binary) Root relaxation: objective 0.000000e+00, 413 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 (643 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 16:39:28 2012 Optimize a model with 2098 rows, 1870 columns and 7210 nonzeros Presolve removed 24 rows and 168 columns Presolve time: 0.01s Presolved: 2074 rows, 1702 columns, 7042 nonzeros Variable types: 0 continuous, 1702 integer (1702 binary) Root relaxation: objective 0.000000e+00, 379 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 (379 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 16:39:28 2012 Optimize a model with 1030 rows, 954 columns and 3090 nonzeros Presolve removed 24 rows and 72 columns Presolve time: 0.00s Presolved: 1006 rows, 882 columns, 3018 nonzeros Variable types: 0 continuous, 882 integer (882 binary) Root relaxation: objective 0.000000e+00, 389 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 (389 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 16:39:28 2012 Optimize a model with 496 rows, 496 columns and 1030 nonzeros Presolve removed 496 rows and 496 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 16:39:28 2012 Optimize a model with 763 rows, 725 columns and 2060 nonzeros Presolve removed 235 rows and 262 columns Presolve time: 0.00s Presolved: 528 rows, 463 columns, 1584 nonzeros Variable types: 0 continuous, 463 integer (463 binary) Root relaxation: objective 0.000000e+00, 231 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 Explored 0 nodes (743 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