current bounds on the number of colors: 0 -- 85 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:22:05 2012 Optimize a model with 7099 rows, 3737 columns and 24612 nonzeros Presolve removed 1 rows and 42 columns Presolve time: 0.05s Presolved: 7098 rows, 3695 columns, 24570 nonzeros Variable types: 0 continuous, 3695 integer (3695 binary) Root relaxation: objective 0.000000e+00, 212 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 (341 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 -- 42 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:22:06 2012 Optimize a model with 3592 rows, 1952 columns and 12306 nonzeros Presolve removed 1 rows and 21 columns Presolve time: 0.02s Presolved: 3591 rows, 1931 columns, 12285 nonzeros Variable types: 0 continuous, 1931 integer (1931 binary) Root relaxation: objective 0.000000e+00, 186 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 (300 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 -- 21 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:22:06 2012 Optimize a model with 1755 rows, 1017 columns and 5860 nonzeros Presolve removed 1 rows and 10 columns Presolve time: 0.01s Presolved: 1754 rows, 1007 columns, 5850 nonzeros Variable types: 0 continuous, 1007 integer (1007 binary) Root relaxation: objective 0.000000e+00, 187 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 (300 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 18:22:06 2012 Optimize a model with 920 rows, 592 columns and 2930 nonzeros Presolve removed 1 rows and 5 columns Presolve time: 0.00s Presolved: 919 rows, 587 columns, 2925 nonzeros Variable types: 0 continuous, 587 integer (587 binary) Root relaxation: objective 0.000000e+00, 204 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 (319 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 18:22:06 2012 Optimize a model with 419 rows, 337 columns and 1172 nonzeros Presolve removed 85 rows and 86 columns Presolve time: 0.00s Presolved: 334 rows, 251 columns, 1002 nonzeros Variable types: 0 continuous, 251 integer (251 binary) Root relaxation: objective 0.000000e+00, 92 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 84 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (331 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 18:22:06 2012 Optimize a model with 586 rows, 422 columns and 1758 nonzeros Presolve removed 1 rows and 3 columns Presolve time: 0.00s Presolved: 585 rows, 419 columns, 1755 nonzeros Variable types: 0 continuous, 419 integer (419 binary) Root relaxation: objective 0.000000e+00, 190 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 76 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (689 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