current bounds on the number of colors: 0 -- 215 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:34:43 2012 Optimize a model with 26858 rows, 23254 columns and 102934 nonzeros Presolve removed 14 rows and 1498 columns Presolve time: 0.14s Presolved: 26844 rows, 21756 columns, 101436 nonzeros Variable types: 0 continuous, 21756 integer (21756 binary) Root relaxation: objective 0.000000e+00, 376 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 (376 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 -- 107 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:34:44 2012 Optimize a model with 13412 rows, 11644 columns and 50986 nonzeros Presolve removed 14 rows and 742 columns Presolve time: 0.12s Presolved: 13398 rows, 10902 columns, 50244 nonzeros Variable types: 0 continuous, 10902 integer (10902 binary) Root relaxation: objective 0.000000e+00, 378 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 (378 simplex iterations) in 0.14 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 -- 53 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:34:44 2012 Optimize a model with 6689 rows, 5839 columns and 25012 nonzeros Presolve removed 14 rows and 364 columns Presolve time: 0.04s Presolved: 6675 rows, 5475 columns, 24648 nonzeros Variable types: 0 continuous, 5475 integer (5475 binary) Root relaxation: objective 0.000000e+00, 376 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 (376 simplex iterations) in 0.05 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 -- 26 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:34:44 2012 Optimize a model with 3452 rows, 3044 columns and 12506 nonzeros Presolve removed 14 rows and 182 columns Presolve time: 0.02s Presolved: 3438 rows, 2862 columns, 12324 nonzeros Variable types: 0 continuous, 2862 integer (2862 binary) Root relaxation: objective 0.000000e+00, 378 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 (570 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:34:45 2012 Optimize a model with 1709 rows, 1539 columns and 5772 nonzeros Presolve removed 14 rows and 84 columns Presolve time: 0.01s Presolved: 1695 rows, 1455 columns, 5688 nonzeros Variable types: 0 continuous, 1455 integer (1455 binary) Root relaxation: objective 0.000000e+00, 356 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 (356 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 16:34:45 2012 Optimize a model with 962 rows, 894 columns and 2886 nonzeros Presolve removed 14 rows and 42 columns Presolve time: 0.00s Presolved: 948 rows, 852 columns, 2844 nonzeros Variable types: 0 continuous, 852 integer (852 binary) Root relaxation: objective 0.000000e+00, 365 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 (365 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 16:34:45 2012 Optimize a model with 464 rows, 464 columns and 962 nonzeros Presolve removed 464 rows and 464 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 16:34:45 2012 Optimize a model with 713 rows, 679 columns and 1924 nonzeros Presolve removed 217 rows and 232 columns Presolve time: 0.00s Presolved: 496 rows, 447 columns, 1488 nonzeros Variable types: 0 continuous, 447 integer (447 binary) Root relaxation: objective 0.000000e+00, 223 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 0 194 - 0.00000 - - 0s Explored 0 nodes (782 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