current bounds on the number of colors: 0 -- 208 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:25 2012 Optimize a model with 23816 rows, 21859 columns and 92456 nonzeros Presolve removed 25 rows and 2600 columns Presolve time: 0.14s Presolved: 23791 rows, 19259 columns, 89856 nonzeros Variable types: 0 continuous, 19259 integer (19259 binary) Root relaxation: objective 0.000000e+00, 339 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 (339 simplex iterations) in 0.16 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 -- 104 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:26 2012 Optimize a model with 12012 rows, 11043 columns and 46228 nonzeros Presolve removed 25 rows and 1300 columns Presolve time: 0.11s Presolved: 11987 rows, 9743 columns, 44928 nonzeros Variable types: 0 continuous, 9743 integer (9743 binary) Root relaxation: objective 0.000000e+00, 344 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 (344 simplex iterations) in 0.12 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 -- 52 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:26 2012 Optimize a model with 6110 rows, 5635 columns and 23114 nonzeros Presolve removed 25 rows and 650 columns Presolve time: 0.04s Presolved: 6085 rows, 4985 columns, 22464 nonzeros Variable types: 0 continuous, 4985 integer (4985 binary) Root relaxation: objective 0.000000e+00, 340 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 (340 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 -- 26 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:26 2012 Optimize a model with 3159 rows, 2931 columns and 11557 nonzeros Presolve removed 25 rows and 325 columns Presolve time: 0.01s Presolved: 3134 rows, 2606 columns, 11232 nonzeros Variable types: 0 continuous, 2606 integer (2606 binary) Root relaxation: objective 0.000000e+00, 358 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 (358 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:26 2012 Optimize a model with 1570 rows, 1475 columns and 5334 nonzeros Presolve removed 25 rows and 150 columns Presolve time: 0.01s Presolved: 1545 rows, 1325 columns, 5184 nonzeros Variable types: 0 continuous, 1325 integer (1325 binary) Root relaxation: objective 0.000000e+00, 340 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 (340 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:32:26 2012 Optimize a model with 889 rows, 851 columns and 2667 nonzeros Presolve removed 25 rows and 75 columns Presolve time: 0.00s Presolved: 864 rows, 776 columns, 2592 nonzeros Variable types: 0 continuous, 776 integer (776 binary) Root relaxation: objective 0.000000e+00, 343 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 (475 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 16:32:26 2012 Optimize a model with 435 rows, 435 columns and 889 nonzeros Presolve removed 435 rows and 435 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 16:32:26 2012 Optimize a model with 662 rows, 643 columns and 1778 nonzeros Presolve removed 214 rows and 242 columns Presolve time: 0.00s Presolved: 448 rows, 401 columns, 1344 nonzeros Variable types: 0 continuous, 401 integer (401 binary) Root relaxation: objective 0.000000e+00, 207 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 0 177 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (706 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