current bounds on the number of colors: 0 -- 206 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:38 2012 Optimize a model with 21939 rows, 21429 columns and 86417 nonzeros Presolve removed 26 rows and 2678 columns Presolve time: 0.14s Presolved: 21913 rows, 18751 columns, 83739 nonzeros Variable types: 0 continuous, 18751 integer (18751 binary) Root relaxation: objective 0.000000e+00, 331 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 (331 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 -- 103 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:31:39 2012 Optimize a model with 10967 rows, 10717 columns and 42789 nonzeros Presolve removed 26 rows and 1326 columns Presolve time: 0.10s Presolved: 10941 rows, 9391 columns, 41463 nonzeros Variable types: 0 continuous, 9391 integer (9391 binary) Root relaxation: objective 0.000000e+00, 331 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 (331 simplex iterations) in 0.11 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 16:31:39 2012 Optimize a model with 5481 rows, 5361 columns and 20975 nonzeros Presolve removed 26 rows and 650 columns Presolve time: 0.03s Presolved: 5455 rows, 4711 columns, 20325 nonzeros Variable types: 0 continuous, 4711 integer (4711 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 0.04 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 16:31:39 2012 Optimize a model with 2738 rows, 2683 columns and 10068 nonzeros Presolve removed 26 rows and 312 columns Presolve time: 0.01s Presolved: 2712 rows, 2371 columns, 9756 nonzeros Variable types: 0 continuous, 2371 integer (2371 binary) Root relaxation: objective 0.000000e+00, 334 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 (334 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 16:31:39 2012 Optimize a model with 1472 rows, 1447 columns and 5034 nonzeros Presolve removed 26 rows and 156 columns Presolve time: 0.01s Presolved: 1446 rows, 1291 columns, 4878 nonzeros Variable types: 0 continuous, 1291 integer (1291 binary) Root relaxation: objective 0.000000e+00, 324 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 (324 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 16:31:39 2012 Optimize a model with 839 rows, 829 columns and 2517 nonzeros Presolve removed 26 rows and 78 columns Presolve time: 0.00s Presolved: 813 rows, 751 columns, 2439 nonzeros Variable types: 0 continuous, 751 integer (751 binary) Root relaxation: objective 0.000000e+00, 318 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 0.00 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 16:31:39 2012 Optimize a model with 417 rows, 417 columns and 839 nonzeros Presolve removed 417 rows and 417 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 16:31:39 2012 Optimize a model with 628 rows, 623 columns and 1678 nonzeros Presolve removed 216 rows and 247 columns Presolve time: 0.00s Presolved: 412 rows, 376 columns, 1236 nonzeros Variable types: 0 continuous, 376 integer (376 binary) Root relaxation: objective 0.000000e+00, 198 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 0 170 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (631 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