current bounds on the number of colors: 0 -- 87 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:22:24 2012 Optimize a model with 7612 rows, 3916 columns and 26316 nonzeros Presolve removed 1 rows and 43 columns Presolve time: 0.05s Presolved: 7611 rows, 3873 columns, 26273 nonzeros Variable types: 0 continuous, 3873 integer (3873 binary) Root relaxation: objective 0.000000e+00, 202 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 (313 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 -- 43 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:22:24 2012 Optimize a model with 3762 rows, 2002 columns and 12852 nonzeros Presolve removed 1 rows and 21 columns Presolve time: 0.02s Presolved: 3761 rows, 1981 columns, 12831 nonzeros Variable types: 0 continuous, 1981 integer (1981 binary) Root relaxation: objective 0.000000e+00, 206 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 0.03 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 -- 21 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:22:24 2012 Optimize a model with 1837 rows, 1045 columns and 6120 nonzeros Presolve removed 1 rows and 10 columns Presolve time: 0.01s Presolved: 1836 rows, 1035 columns, 6110 nonzeros Variable types: 0 continuous, 1035 integer (1035 binary) Root relaxation: objective 0.000000e+00, 189 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 (189 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 -- 10 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:22:24 2012 Optimize a model with 962 rows, 610 columns and 3060 nonzeros Presolve removed 1 rows and 5 columns Presolve time: 0.00s Presolved: 961 rows, 605 columns, 3055 nonzeros Variable types: 0 continuous, 605 integer (605 binary) Root relaxation: objective 0.000000e+00, 194 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 (396 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 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:22:24 2012 Optimize a model with 437 rows, 349 columns and 1224 nonzeros Presolve removed 87 rows and 88 columns Presolve time: 0.00s Presolved: 350 rows, 261 columns, 1050 nonzeros Variable types: 0 continuous, 261 integer (261 binary) Root relaxation: objective 0.000000e+00, 93 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 86 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (354 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:22:24 2012 Optimize a model with 612 rows, 436 columns and 1836 nonzeros Presolve removed 1 rows and 3 columns Presolve time: 0.00s Presolved: 611 rows, 433 columns, 1833 nonzeros Variable types: 0 continuous, 433 integer (433 binary) Root relaxation: objective 0.000000e+00, 191 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 0 148 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (660 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% optimal solution found: number of colors: 3