current bounds on the number of colors: 0 -- 150 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:47:56 2012 Optimize a model with 40950 rows, 11794 columns and 133650 nonzeros Presolve time: 0.15s Presolved: 40950 rows, 11794 columns, 133650 nonzeros Variable types: 0 continuous, 11794 integer (11794 binary) Root relaxation: objective 0.000000e+00, 488 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 (805 simplex iterations) in 0.24 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 -- 75 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:47:56 2012 Optimize a model with 20278 rows, 6094 columns and 65934 nonzeros Presolve time: 0.11s Presolved: 20278 rows, 6094 columns, 65934 nonzeros Variable types: 0 continuous, 6094 integer (6094 binary) Root relaxation: objective 0.000000e+00, 450 iterations, 0.02 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 (782 simplex iterations) in 0.15 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 -- 37 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:47:57 2012 Optimize a model with 9942 rows, 3244 columns and 32076 nonzeros Presolve time: 0.04s Presolved: 9942 rows, 3244 columns, 32076 nonzeros Variable types: 0 continuous, 3244 integer (3244 binary) Root relaxation: objective 0.000000e+00, 314 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 (560 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 -- 18 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:47:57 2012 Optimize a model with 5046 rows, 1894 columns and 16038 nonzeros Presolve time: 0.02s Presolved: 5046 rows, 1894 columns, 16038 nonzeros Variable types: 0 continuous, 1894 integer (1894 binary) Root relaxation: objective 0.000000e+00, 329 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 (586 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 -- 9 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:47:57 2012 Optimize a model with 2326 rows, 1144 columns and 7128 nonzeros Presolve time: 0.01s Presolved: 2326 rows, 1144 columns, 7128 nonzeros Variable types: 0 continuous, 1144 integer (1144 binary) Root relaxation: objective 0.000000e+00, 339 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 0 183 - 0.00000 - - 0s 0 0 0.00000 0 169 - 0.00000 - - 0s 0 0 0.00000 0 222 - 0.00000 - - 0s 0 0 0.00000 0 282 - 0.00000 - - 0s 0 0 0.00000 0 251 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (10058 simplex iterations) in 0.79 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 18:47:58 2012 Optimize a model with 1238 rows, 844 columns and 3564 nonzeros Presolve removed 150 rows and 150 columns Presolve time: 0.00s Presolved: 1088 rows, 694 columns, 3264 nonzeros Variable types: 0 continuous, 694 integer (694 binary) Root relaxation: objective 0.000000e+00, 160 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 0 150 - 0.00000 - - 0s Explored 0 nodes (638 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 18:47:58 2012 Optimize a model with 1782 rows, 994 columns and 5346 nonzeros Presolve time: 0.00s Presolved: 1782 rows, 994 columns, 5346 nonzeros Variable types: 0 continuous, 994 integer (994 binary) Root relaxation: objective 0.000000e+00, 345 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 0 296 - 0.00000 - - 0s 0 0 0.00000 0 294 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (3160 simplex iterations) in 0.24 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