current bounds on the number of colors: 0 -- 94 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:19 2012 Optimize a model with 20022 rows, 4842 columns and 64202 nonzeros Presolve time: 0.12s Presolved: 20022 rows, 4842 columns, 64202 nonzeros Variable types: 0 continuous, 4842 integer (4842 binary) Root relaxation: objective 0.000000e+00, 307 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 (527 simplex iterations) in 0.16 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 -- 47 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:19 2012 Optimize a model with 9846 rows, 2586 columns and 31418 nonzeros Presolve time: 0.04s Presolved: 9846 rows, 2586 columns, 31418 nonzeros Variable types: 0 continuous, 2586 integer (2586 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 (412 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 -- 23 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:19 2012 Optimize a model with 4758 rows, 1458 columns and 15026 nonzeros Presolve time: 0.01s Presolved: 4758 rows, 1458 columns, 15026 nonzeros Variable types: 0 continuous, 1458 integer (1458 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (359 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 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:47:19 2012 Optimize a model with 2214 rows, 894 columns and 6830 nonzeros Presolve time: 0.01s Presolved: 2214 rows, 894 columns, 6830 nonzeros Variable types: 0 continuous, 894 integer (894 binary) Root relaxation: objective 0.000000e+00, 207 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 (803 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 19:47:20 2012 Optimize a model with 942 rows, 612 columns and 2732 nonzeros Presolve removed 94 rows and 94 columns Presolve time: 0.00s Presolved: 848 rows, 518 columns, 2544 nonzeros Variable types: 0 continuous, 518 integer (518 binary) Root relaxation: objective 0.000000e+00, 99 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 94 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (399 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 19:47:20 2012 Optimize a model with 1366 rows, 706 columns and 4098 nonzeros Presolve time: 0.00s Presolved: 1366 rows, 706 columns, 4098 nonzeros Variable types: 0 continuous, 706 integer (706 binary) Root relaxation: objective 0.000000e+00, 212 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 0 186 - 0.00000 - - 0s 0 0 0.00000 0 166 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2353 simplex iterations) in 0.18 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 19:47:20 2012 Optimize a model with 1790 rows, 800 columns and 5464 nonzeros Presolve time: 0.00s Presolved: 1790 rows, 800 columns, 5464 nonzeros Variable types: 0 continuous, 800 integer (800 binary) Root relaxation: objective 0.000000e+00, 208 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 0 182 - 0.00000 - - 0s 0 0 0.00000 0 177 - 0.00000 - - 0s 0 0 0.00000 0 244 - 0.00000 - - 0s 0 0 0.00000 0 240 - 0.00000 - - 0s 0 0 0.00000 0 230 - 0.00000 - - 0s 0 0 0.00000 0 237 - 0.00000 - - 0s 0 0 0.00000 0 245 - 0.00000 - - 0s 0 0 0.00000 0 245 - 0.00000 - - 0s 0 2 0.00000 0 245 - 0.00000 - - 0s Cutting planes: Clique: 6 Zero half: 34 Explored 262 nodes (30950 simplex iterations) in 1.97 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