current bounds on the number of colors: 0 -- 248 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:29 2012 Optimize a model with 37448 rows, 31052 columns and 142352 nonzeros Presolve removed 27 rows and 3348 columns Presolve time: 0.19s Presolved: 37421 rows, 27704 columns, 139004 nonzeros Variable types: 0 continuous, 27704 integer (27704 binary) Root relaxation: objective 0.000000e+00, 419 iterations, 0.02 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 (419 simplex iterations) in 0.22 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 -- 124 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:30 2012 Optimize a model with 18848 rows, 15676 columns and 71176 nonzeros Presolve removed 27 rows and 1674 columns Presolve time: 0.13s Presolved: 18821 rows, 14002 columns, 69502 nonzeros Variable types: 0 continuous, 14002 integer (14002 binary) Root relaxation: objective 0.000000e+00, 423 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 (652 simplex iterations) in 0.17 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 -- 62 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:30 2012 Optimize a model with 9548 rows, 7988 columns and 35588 nonzeros Presolve removed 27 rows and 837 columns Presolve time: 0.06s Presolved: 9521 rows, 7151 columns, 34751 nonzeros Variable types: 0 continuous, 7151 integer (7151 binary) Root relaxation: objective 0.000000e+00, 415 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 (415 simplex iterations) in 0.07 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 -- 31 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:31 2012 Optimize a model with 4748 rows, 4020 columns and 17220 nonzeros Presolve removed 27 rows and 405 columns Presolve time: 0.02s Presolved: 4721 rows, 3615 columns, 16815 nonzeros Variable types: 0 continuous, 3615 integer (3615 binary) Root relaxation: objective 0.000000e+00, 413 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 (413 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:31 2012 Optimize a model with 2348 rows, 2036 columns and 8036 nonzeros Presolve removed 27 rows and 189 columns Presolve time: 0.01s Presolved: 2321 rows, 1847 columns, 7847 nonzeros Variable types: 0 continuous, 1847 integer (1847 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 (396 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 16:47:31 2012 Optimize a model with 1148 rows, 1044 columns and 3444 nonzeros Presolve removed 27 rows and 81 columns Presolve time: 0.00s Presolved: 1121 rows, 963 columns, 3363 nonzeros Variable types: 0 continuous, 963 integer (963 binary) Root relaxation: objective 0.000000e+00, 415 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 (415 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 16:47:31 2012 Optimize a model with 548 rows, 548 columns and 1148 nonzeros Presolve removed 548 rows and 548 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 16:47:31 2012 Optimize a model with 848 rows, 796 columns and 2296 nonzeros Presolve removed 252 rows and 281 columns Presolve time: 0.00s Presolved: 596 rows, 515 columns, 1788 nonzeros Variable types: 0 continuous, 515 integer (515 binary) Root relaxation: objective 0.000000e+00, 248 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 0 217 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (839 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