current bounds on the number of colors: 0 -- 85 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:41:47 2012 Optimize a model with 15667 rows, 3941 columns and 50316 nonzeros Presolve time: 0.09s Presolved: 15667 rows, 3941 columns, 50316 nonzeros Variable types: 0 continuous, 3941 integer (3941 binary) Root relaxation: objective 0.000000e+00, 233 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 (400 simplex iterations) in 0.11 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 Thu Dec 13 19:41:47 2012 Optimize a model with 7876 rows, 2156 columns and 25158 nonzeros Presolve time: 0.03s Presolved: 7876 rows, 2156 columns, 25158 nonzeros Variable types: 0 continuous, 2156 integer (2156 binary) Root relaxation: objective 0.000000e+00, 171 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 (401 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 -- 21 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:41:48 2012 Optimize a model with 3795 rows, 1221 columns and 11980 nonzeros Presolve time: 0.01s Presolved: 3795 rows, 1221 columns, 11980 nonzeros Variable types: 0 continuous, 1221 integer (1221 binary) Root relaxation: objective 0.000000e+00, 175 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 (386 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 -- 10 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:41:48 2012 Optimize a model with 1940 rows, 796 columns and 5990 nonzeros Presolve time: 0.00s Presolved: 1940 rows, 796 columns, 5990 nonzeros Variable types: 0 continuous, 796 integer (796 binary) Root relaxation: objective 0.000000e+00, 179 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 78 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (968 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:41:48 2012 Optimize a model with 827 rows, 541 columns and 2396 nonzeros Presolve removed 85 rows and 85 columns Presolve time: 0.00s Presolved: 742 rows, 456 columns, 2226 nonzeros Variable types: 0 continuous, 456 integer (456 binary) Root relaxation: objective 0.000000e+00, 91 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 85 - 0.00000 - - 0s Explored 0 nodes (365 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:41:48 2012 Optimize a model with 1198 rows, 626 columns and 3594 nonzeros Presolve time: 0.00s Presolved: 1198 rows, 626 columns, 3594 nonzeros Variable types: 0 continuous, 626 integer (626 binary) Root relaxation: objective 0.000000e+00, 196 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 0 164 - 0.00000 - - 0s 0 0 0.00000 0 168 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (1792 simplex iterations) in 0.13 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:41:48 2012 Optimize a model with 1569 rows, 711 columns and 4792 nonzeros Presolve time: 0.00s Presolved: 1569 rows, 711 columns, 4792 nonzeros Variable types: 0 continuous, 711 integer (711 binary) Root relaxation: objective 0.000000e+00, 193 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 0 164 - 0.00000 - - 0s 0 0 0.00000 0 158 - 0.00000 - - 0s 0 0 0.00000 0 180 - 0.00000 - - 0s 0 0 0.00000 0 230 - 0.00000 - - 0s 0 0 0.00000 0 204 - 0.00000 - - 0s 0 0 0.00000 0 151 - 0.00000 - - 0s 0 0 0.00000 0 207 - 0.00000 - - 0s 0 0 0.00000 0 196 - 0.00000 - - 0s 0 0 0.00000 0 201 - 0.00000 - - 0s 0 0 0.00000 0 201 - 0.00000 - - 0s 0 2 0.00000 0 201 - 0.00000 - - 1s Cutting planes: Clique: 3 Zero half: 19 Explored 151 nodes (26274 simplex iterations) in 1.63 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 5