current bounds on the number of colors: 0 -- 84 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:41:15 2012 Optimize a model with 15330 rows, 3891 columns and 49266 nonzeros Presolve time: 0.08s Presolved: 15330 rows, 3891 columns, 49266 nonzeros Variable types: 0 continuous, 3891 integer (3891 binary) Root relaxation: objective 0.000000e+00, 227 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 (506 simplex iterations) in 0.13 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 19:41:15 2012 Optimize a model with 7707 rows, 2127 columns and 24633 nonzeros Presolve time: 0.03s Presolved: 7707 rows, 2127 columns, 24633 nonzeros Variable types: 0 continuous, 2127 integer (2127 binary) Root relaxation: objective 0.000000e+00, 170 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 (318 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 -- 21 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:41:15 2012 Optimize a model with 3714 rows, 1203 columns and 11730 nonzeros Presolve time: 0.01s Presolved: 3714 rows, 1203 columns, 11730 nonzeros Variable types: 0 continuous, 1203 integer (1203 binary) Root relaxation: objective 0.000000e+00, 177 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 (366 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 19:41:15 2012 Optimize a model with 1899 rows, 783 columns and 5865 nonzeros Presolve time: 0.00s Presolved: 1899 rows, 783 columns, 5865 nonzeros Variable types: 0 continuous, 783 integer (783 binary) Root relaxation: objective 0.000000e+00, 177 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 (1237 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:41:16 2012 Optimize a model with 810 rows, 531 columns and 2346 nonzeros Presolve removed 84 rows and 84 columns Presolve time: 0.00s Presolved: 726 rows, 447 columns, 2178 nonzeros Variable types: 0 continuous, 447 integer (447 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 0.00000 0 84 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (370 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 19:41:16 2012 Optimize a model with 1173 rows, 615 columns and 3519 nonzeros Presolve time: 0.00s Presolved: 1173 rows, 615 columns, 3519 nonzeros Variable types: 0 continuous, 615 integer (615 binary) Root relaxation: objective 0.000000e+00, 200 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 0 210 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2150 simplex iterations) in 0.14 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 19:41:16 2012 Optimize a model with 1536 rows, 699 columns and 4692 nonzeros Presolve time: 0.00s Presolved: 1536 rows, 699 columns, 4692 nonzeros Variable types: 0 continuous, 699 integer (699 binary) Root relaxation: objective 0.000000e+00, 184 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 0 130 - 0.00000 - - 0s 0 0 0.00000 0 154 - 0.00000 - - 0s 0 0 0.00000 0 188 - 0.00000 - - 0s 0 0 0.00000 0 226 - 0.00000 - - 0s 0 0 0.00000 0 125 - 0.00000 - - 0s 0 0 0.00000 0 100 - 0.00000 - - 0s 0 0 0.00000 0 170 - 0.00000 - - 0s 0 0 0.00000 0 197 - 0.00000 - - 0s 0 0 0.00000 0 202 - 0.00000 - - 0s 0 0 0.00000 0 202 - 0.00000 - - 0s 0 2 0.00000 0 202 - 0.00000 - - 0s Cutting planes: Clique: 5 Zero half: 23 Explored 423 nodes (42116 simplex iterations) in 2.12 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