current bounds on the number of colors: 0 -- 134 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:36:18 2012 Optimize a model with 32093 rows, 9455 columns and 104855 nonzeros Presolve time: 0.15s Presolved: 32093 rows, 9455 columns, 104855 nonzeros Variable types: 0 continuous, 9455 integer (9455 binary) Root relaxation: objective 0.000000e+00, 458 iterations, 0.03 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 (747 simplex iterations) in 0.22 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 -- 67 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:36:19 2012 Optimize a model with 15875 rows, 4899 columns and 51645 nonzeros Presolve time: 0.08s Presolved: 15875 rows, 4899 columns, 51645 nonzeros Variable types: 0 continuous, 4899 integer (4899 binary) Root relaxation: objective 0.000000e+00, 327 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 (649 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 -- 33 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:36:19 2012 Optimize a model with 7766 rows, 2621 columns and 25040 nonzeros Presolve time: 0.03s Presolved: 7766 rows, 2621 columns, 25040 nonzeros Variable types: 0 continuous, 2621 integer (2621 binary) Root relaxation: objective 0.000000e+00, 271 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 (506 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 -- 16 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:36:19 2012 Optimize a model with 3950 rows, 1549 columns and 12520 nonzeros Presolve time: 0.01s Presolved: 3950 rows, 1549 columns, 12520 nonzeros Variable types: 0 continuous, 1549 integer (1549 binary) Root relaxation: objective 0.000000e+00, 313 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 (529 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 -- 8 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:36:19 2012 Optimize a model with 2042 rows, 1013 columns and 6260 nonzeros Presolve time: 0.01s Presolved: 2042 rows, 1013 columns, 6260 nonzeros Variable types: 0 continuous, 1013 integer (1013 binary) Root relaxation: objective 0.000000e+00, 303 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 0 230 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1432 simplex iterations) in 0.05 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:36:19 2012 Optimize a model with 1088 rows, 745 columns and 3130 nonzeros Presolve removed 134 rows and 134 columns Presolve time: 0.00s Presolved: 954 rows, 611 columns, 2862 nonzeros Variable types: 0 continuous, 611 integer (611 binary) Root relaxation: objective 0.000000e+00, 139 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 0 134 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (578 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 - current bounds on the number of colors: 2 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:36:19 2012 Optimize a model with 1565 rows, 879 columns and 4695 nonzeros Presolve time: 0.00s Presolved: 1565 rows, 879 columns, 4695 nonzeros Variable types: 0 continuous, 879 integer (879 binary) Root relaxation: objective 0.000000e+00, 319 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 0 268 - 0.00000 - - 0s 0 0 0.00000 0 266 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3148 simplex iterations) in 0.21 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: 4