current bounds on the number of colors: 0 -- 225 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:15 2012 Optimize a model with 30577 rows, 25471 columns and 116256 nonzeros Presolve removed 17 rows and 1904 columns Presolve time: 0.15s Presolved: 30560 rows, 23567 columns, 114352 nonzeros Variable types: 0 continuous, 23567 integer (23567 binary) Root relaxation: objective 0.000000e+00, 387 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 (387 simplex iterations) in 0.18 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 -- 112 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:15 2012 Optimize a model with 15401 rows, 12871 columns and 58128 nonzeros Presolve removed 17 rows and 952 columns Presolve time: 0.12s Presolved: 15384 rows, 11919 columns, 57176 nonzeros Variable types: 0 continuous, 11919 integer (11919 binary) Root relaxation: objective 0.000000e+00, 385 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 (385 simplex iterations) in 0.18 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 -- 56 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:16 2012 Optimize a model with 7813 rows, 6571 columns and 29064 nonzeros Presolve removed 17 rows and 476 columns Presolve time: 0.05s Presolved: 7796 rows, 6095 columns, 28588 nonzeros Variable types: 0 continuous, 6095 integer (6095 binary) Root relaxation: objective 0.000000e+00, 387 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 (387 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 -- 28 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:16 2012 Optimize a model with 4019 rows, 3421 columns and 14532 nonzeros Presolve removed 17 rows and 238 columns Presolve time: 0.02s Presolved: 4002 rows, 3183 columns, 14294 nonzeros Variable types: 0 continuous, 3183 integer (3183 binary) Root relaxation: objective 0.000000e+00, 389 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 (389 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:16 2012 Optimize a model with 2122 rows, 1846 columns and 7266 nonzeros Presolve removed 17 rows and 119 columns Presolve time: 0.01s Presolved: 2105 rows, 1727 columns, 7147 nonzeros Variable types: 0 continuous, 1727 integer (1727 binary) Root relaxation: objective 0.000000e+00, 384 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 (545 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:16 2012 Optimize a model with 1038 rows, 946 columns and 3114 nonzeros Presolve removed 17 rows and 51 columns Presolve time: 0.00s Presolved: 1021 rows, 895 columns, 3063 nonzeros Variable types: 0 continuous, 895 integer (895 binary) Root relaxation: objective 0.000000e+00, 371 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 (498 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 16:38:16 2012 Optimize a model with 496 rows, 496 columns and 1038 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 16:38:16 2012 Optimize a model with 767 rows, 721 columns and 2076 nonzeros Presolve removed 227 rows and 245 columns Presolve time: 0.00s Presolved: 540 rows, 476 columns, 1620 nonzeros Variable types: 0 continuous, 476 integer (476 binary) Root relaxation: objective 0.000000e+00, 240 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 0 203 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (792 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