current bounds on the number of colors: 0 -- 221 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:37 2012 Optimize a model with 30471 rows, 24585 columns and 115060 nonzeros Presolve removed 21 rows and 2310 columns Presolve time: 0.14s Presolved: 30450 rows, 22275 columns, 112750 nonzeros Variable types: 0 continuous, 22275 integer (22275 binary) Root relaxation: objective 0.000000e+00, 411 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 (632 simplex iterations) in 0.20 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 -- 110 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:38 2012 Optimize a model with 15346 rows, 12430 columns and 57530 nonzeros Presolve removed 21 rows and 1155 columns Presolve time: 0.13s Presolved: 15325 rows, 11275 columns, 56375 nonzeros Variable types: 0 continuous, 11275 integer (11275 binary) Root relaxation: objective 0.000000e+00, 408 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 (594 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 -- 55 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:38 2012 Optimize a model with 7646 rows, 6242 columns and 28242 nonzeros Presolve removed 21 rows and 567 columns Presolve time: 0.04s Presolved: 7625 rows, 5675 columns, 27675 nonzeros Variable types: 0 continuous, 5675 integer (5675 binary) Root relaxation: objective 0.000000e+00, 396 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 (637 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 -- 27 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:38 2012 Optimize a model with 3796 rows, 3148 columns and 13598 nonzeros Presolve removed 21 rows and 273 columns Presolve time: 0.02s Presolved: 3775 rows, 2875 columns, 13325 nonzeros Variable types: 0 continuous, 2875 integer (2875 binary) Root relaxation: objective 0.000000e+00, 409 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 (627 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:36:38 2012 Optimize a model with 1871 rows, 1601 columns and 6276 nonzeros Presolve removed 21 rows and 126 columns Presolve time: 0.01s Presolved: 1850 rows, 1475 columns, 6150 nonzeros Variable types: 0 continuous, 1475 integer (1475 binary) Root relaxation: objective 0.000000e+00, 369 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 (369 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 16:36:38 2012 Optimize a model with 1046 rows, 938 columns and 3138 nonzeros Presolve removed 21 rows and 63 columns Presolve time: 0.00s Presolved: 1025 rows, 875 columns, 3075 nonzeros Variable types: 0 continuous, 875 integer (875 binary) Root relaxation: objective 0.000000e+00, 435 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 (597 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 16:36:38 2012 Optimize a model with 496 rows, 496 columns and 1046 nonzeros Presolve removed 496 rows and 496 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 16:36:38 2012 Optimize a model with 771 rows, 717 columns and 2092 nonzeros Presolve removed 225 rows and 248 columns Presolve time: 0.00s Presolved: 546 rows, 469 columns, 1638 nonzeros Variable types: 0 continuous, 469 integer (469 binary) Root relaxation: objective 0.000000e+00, 224 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 0 196 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (766 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