current bounds on the number of colors: 0 -- 101 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:52:32 2012 Optimize a model with 25901 rows, 5566 columns and 82450 nonzeros Presolve time: 0.13s Presolved: 25901 rows, 5566 columns, 82450 nonzeros Variable types: 0 continuous, 5566 integer (5566 binary) Root relaxation: objective 0.000000e+00, 331 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 (589 simplex iterations) in 0.19 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 -- 50 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:52:33 2012 Optimize a model with 13001 rows, 3041 columns and 41225 nonzeros Presolve time: 0.05s Presolved: 13001 rows, 3041 columns, 41225 nonzeros Variable types: 0 continuous, 3041 integer (3041 binary) Root relaxation: objective 0.000000e+00, 243 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 (453 simplex iterations) in 0.08 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 -- 25 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:52:33 2012 Optimize a model with 6293 rows, 1728 columns and 19788 nonzeros Presolve time: 0.02s Presolved: 6293 rows, 1728 columns, 19788 nonzeros Variable types: 0 continuous, 1728 integer (1728 binary) Root relaxation: objective 0.000000e+00, 206 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 0.03 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 -- 12 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:52:33 2012 Optimize a model with 3197 rows, 1122 columns and 9894 nonzeros Presolve time: 0.01s Presolved: 3197 rows, 1122 columns, 9894 nonzeros Variable types: 0 continuous, 1122 integer (1122 binary) Root relaxation: objective 0.000000e+00, 215 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 (781 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:52:33 2012 Optimize a model with 1649 rows, 819 columns and 4947 nonzeros Presolve time: 0.00s Presolved: 1649 rows, 819 columns, 4947 nonzeros Variable types: 0 continuous, 819 integer (819 binary) Root relaxation: objective 0.000000e+00, 227 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 0 152 - 0.00000 - - 0s 0 0 0.00000 0 202 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2561 simplex iterations) in 0.19 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 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:52:33 2012 Optimize a model with 2165 rows, 920 columns and 6596 nonzeros Presolve time: 0.01s Presolved: 2165 rows, 920 columns, 6596 nonzeros Variable types: 0 continuous, 920 integer (920 binary) Root relaxation: objective 0.000000e+00, 232 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 0 196 - 0.00000 - - 0s 0 0 0.00000 0 194 - 0.00000 - - 0s 0 0 0.00000 0 275 - 0.00000 - - 0s 0 0 0.00000 0 265 - 0.00000 - - 0s 0 0 0.00000 0 277 - 0.00000 - - 0s 0 0 0.00000 0 262 - 0.00000 - - 0s 0 0 0.00000 0 273 - 0.00000 - - 1s 0 0 0.00000 0 273 - 0.00000 - - 1s 0 2 0.00000 0 273 - 0.00000 - - 1s Cutting planes: Clique: 6 Zero half: 19 Explored 105 nodes (25237 simplex iterations) in 2.54 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: 4 -- 6 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:52:36 2012 Optimize a model with 2681 rows, 1021 columns and 8245 nonzeros Presolve time: 0.01s Presolved: 2681 rows, 1021 columns, 8245 nonzeros Variable types: 0 continuous, 1021 integer (1021 binary) Root relaxation: objective 0.000000e+00, 223 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 0 189 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 5 Clique: 61 MIR: 1 Zero half: 70 Explored 0 nodes (3280 simplex iterations) in 0.25 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: 5