current bounds on the number of colors: 0 -- 49 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:36:17 2012 Optimize a model with 3073 rows, 1302 columns and 10248 nonzeros Presolve removed 1 rows and 24 columns Presolve time: 0.01s Presolved: 3072 rows, 1278 columns, 10224 nonzeros Variable types: 0 continuous, 1278 integer (1278 binary) Root relaxation: objective 0.000000e+00, 113 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 (113 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 -- 24 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:36:18 2012 Optimize a model with 1561 rows, 714 columns and 5124 nonzeros Presolve removed 1 rows and 12 columns Presolve time: 0.01s Presolved: 1560 rows, 702 columns, 5112 nonzeros Variable types: 0 continuous, 702 integer (702 binary) Root relaxation: objective 0.000000e+00, 97 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 (177 simplex iterations) in 0.01 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 19:36:18 2012 Optimize a model with 805 rows, 420 columns and 2562 nonzeros Presolve removed 1 rows and 6 columns Presolve time: 0.00s Presolved: 804 rows, 414 columns, 2556 nonzeros Variable types: 0 continuous, 414 integer (414 binary) Root relaxation: objective 0.000000e+00, 110 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 (195 simplex iterations) in 0.01 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 19:36:18 2012 Optimize a model with 427 rows, 273 columns and 1281 nonzeros Presolve removed 1 rows and 3 columns Presolve time: 0.00s Presolved: 426 rows, 270 columns, 1278 nonzeros Variable types: 0 continuous, 270 integer (270 binary) Root relaxation: objective 0.000000e+00, 123 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 96 - 0.00000 - - 0s 0 0 0.00000 0 96 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (785 simplex iterations) in 0.03 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 19:36:18 2012 Optimize a model with 553 rows, 322 columns and 1708 nonzeros Presolve removed 1 rows and 4 columns Presolve time: 0.00s Presolved: 552 rows, 318 columns, 1704 nonzeros Variable types: 0 continuous, 318 integer (318 binary) Root relaxation: objective 0.000000e+00, 123 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 (218 simplex iterations) in 0.00 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: 4