current bounds on the number of colors: 0 -- 48 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:50 2012 Optimize a model with 1656 rows, 1219 columns and 5976 nonzeros Presolve removed 1 rows and 24 columns Presolve time: 0.01s Presolved: 1655 rows, 1195 columns, 5952 nonzeros Variable types: 0 continuous, 1195 integer (1195 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (92 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 -- 24 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:50 2012 Optimize a model with 852 rows, 643 columns and 2988 nonzeros Presolve removed 1 rows and 12 columns Presolve time: 0.00s Presolved: 851 rows, 631 columns, 2976 nonzeros Variable types: 0 continuous, 631 integer (631 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (141 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 -- 12 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:19:50 2012 Optimize a model with 450 rows, 355 columns and 1494 nonzeros Presolve removed 1 rows and 6 columns Presolve time: 0.00s Presolved: 449 rows, 349 columns, 1488 nonzeros Variable types: 0 continuous, 349 integer (349 binary) Root relaxation: objective 0.000000e+00, 88 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 (123 simplex iterations) in 0.00 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 Fri Dec 14 18:19:50 2012 Optimize a model with 249 rows, 211 columns and 747 nonzeros Presolve removed 1 rows and 3 columns Presolve time: 0.00s Presolved: 248 rows, 208 columns, 744 nonzeros Variable types: 0 continuous, 208 integer (208 binary) Root relaxation: objective 0.000000e+00, 109 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 (169 simplex iterations) in 0.00 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 Fri Dec 14 18:19:50 2012 Optimize a model with 115 rows, 115 columns and 249 nonzeros Presolve removed 115 rows and 115 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 Fri Dec 14 18:19:50 2012 Optimize a model with 182 rows, 163 columns and 498 nonzeros Presolve removed 48 rows and 49 columns Presolve time: 0.00s Presolved: 134 rows, 114 columns, 402 nonzeros Variable types: 0 continuous, 114 integer (114 binary) Root relaxation: objective 0.000000e+00, 56 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 47 - 0.00000 - - 0s Explored 0 nodes (189 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 - optimal solution found: number of colors: 3