current bounds on the number of colors: 0 -- 123 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:47 2012 Optimize a model with 5125 rows, 7585 columns and 22509 nonzeros Presolve removed 35 rows and 2135 columns Presolve time: 0.06s Presolved: 5090 rows, 5450 columns, 20374 nonzeros Variable types: 0 continuous, 5450 integer (5450 binary) Root relaxation: objective 0.000000e+00, 152 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 (152 simplex iterations) in 0.07 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 -- 61 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:47 2012 Optimize a model with 2583 rows, 3772 columns and 11070 nonzeros Presolve removed 35 rows and 1050 columns Presolve time: 0.02s Presolved: 2548 rows, 2722 columns, 10020 nonzeros Variable types: 0 continuous, 2722 integer (2722 binary) Root relaxation: objective 0.000000e+00, 151 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 (151 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 -- 30 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:47 2012 Optimize a model with 1353 rows, 1927 columns and 5535 nonzeros Presolve removed 35 rows and 525 columns Presolve time: 0.01s Presolved: 1318 rows, 1402 columns, 5010 nonzeros Variable types: 0 continuous, 1402 integer (1402 binary) Root relaxation: objective 0.000000e+00, 150 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 (150 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:47 2012 Optimize a model with 697 rows, 943 columns and 2583 nonzeros Presolve removed 35 rows and 245 columns Presolve time: 0.00s Presolved: 662 rows, 698 columns, 2338 nonzeros Variable types: 0 continuous, 698 integer (698 binary) Root relaxation: objective 0.000000e+00, 147 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 (147 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% current bounds on the number of colors: 0 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:47 2012 Optimize a model with 369 rows, 451 columns and 1107 nonzeros Presolve removed 35 rows and 105 columns Presolve time: 0.00s Presolved: 334 rows, 346 columns, 1002 nonzeros Variable types: 0 continuous, 346 integer (346 binary) Root relaxation: objective 0.000000e+00, 135 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 (135 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% current bounds on the number of colors: 0 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:47 2012 Optimize a model with 205 rows, 205 columns and 369 nonzeros Presolve removed 205 rows and 205 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 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: 1 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:16:47 2012 Optimize a model with 287 rows, 328 columns and 738 nonzeros Presolve removed 131 rows and 170 columns Presolve time: 0.00s Presolved: 156 rows, 158 columns, 468 nonzeros Variable types: 0 continuous, 158 integer (158 binary) Root relaxation: objective 0.000000e+00, 75 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 49 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (228 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - optimal solution found: number of colors: 3