current bounds on the number of colors: 0 -- 205 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:28 2012 Optimize a model with 22543 rows, 21129 columns and 87924 nonzeros Presolve removed 19 rows and 1938 columns Presolve time: 0.14s Presolved: 22524 rows, 19191 columns, 85986 nonzeros Variable types: 0 continuous, 19191 integer (19191 binary) Root relaxation: objective 0.000000e+00, 333 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 (333 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 -- 102 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:28 2012 Optimize a model with 11374 rows, 10674 columns and 43962 nonzeros Presolve removed 19 rows and 969 columns Presolve time: 0.11s Presolved: 11355 rows, 9705 columns, 42993 nonzeros Variable types: 0 continuous, 9705 integer (9705 binary) Root relaxation: objective 0.000000e+00, 335 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 (335 simplex iterations) in 0.12 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 -- 51 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:28 2012 Optimize a model with 5680 rows, 5344 columns and 21550 nonzeros Presolve removed 19 rows and 475 columns Presolve time: 0.03s Presolved: 5661 rows, 4869 columns, 21075 nonzeros Variable types: 0 continuous, 4869 integer (4869 binary) Root relaxation: objective 0.000000e+00, 333 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 (333 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 -- 25 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:29 2012 Optimize a model with 2833 rows, 2679 columns and 10344 nonzeros Presolve removed 19 rows and 228 columns Presolve time: 0.01s Presolved: 2814 rows, 2451 columns, 10116 nonzeros Variable types: 0 continuous, 2451 integer (2451 binary) Root relaxation: objective 0.000000e+00, 357 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 (540 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 -- 12 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:29 2012 Optimize a model with 1519 rows, 1449 columns and 5172 nonzeros Presolve removed 19 rows and 114 columns Presolve time: 0.01s Presolved: 1500 rows, 1335 columns, 5058 nonzeros Variable types: 0 continuous, 1335 integer (1335 binary) Root relaxation: objective 0.000000e+00, 331 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 (331 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 Sat Dec 15 16:31:29 2012 Optimize a model with 862 rows, 834 columns and 2586 nonzeros Presolve removed 19 rows and 57 columns Presolve time: 0.00s Presolved: 843 rows, 777 columns, 2529 nonzeros Variable types: 0 continuous, 777 integer (777 binary) Root relaxation: objective 0.000000e+00, 302 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 (399 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:29 2012 Optimize a model with 424 rows, 424 columns and 862 nonzeros Presolve removed 424 rows and 424 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 16:31:29 2012 Optimize a model with 643 rows, 629 columns and 1724 nonzeros Presolve removed 215 rows and 239 columns Presolve time: 0.00s Presolved: 428 rows, 390 columns, 1284 nonzeros Variable types: 0 continuous, 390 integer (390 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 0.00000 0 173 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (698 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 - optimal solution found: number of colors: 3