current bounds on the number of colors: 0 -- 96 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:23:47 2012 Optimize a model with 10224 rows, 4819 columns and 34992 nonzeros Presolve removed 2 rows and 96 columns Presolve time: 0.07s Presolved: 10222 rows, 4723 columns, 34896 nonzeros Variable types: 0 continuous, 4723 integer (4723 binary) Root relaxation: objective 0.000000e+00, 244 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 (244 simplex iterations) in 0.09 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 -- 48 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:23:47 2012 Optimize a model with 5160 rows, 2515 columns and 17496 nonzeros Presolve removed 2 rows and 48 columns Presolve time: 0.02s Presolved: 5158 rows, 2467 columns, 17448 nonzeros Variable types: 0 continuous, 2467 integer (2467 binary) Root relaxation: objective 0.000000e+00, 219 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 (371 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 -- 24 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:23:47 2012 Optimize a model with 2628 rows, 1363 columns and 8748 nonzeros Presolve removed 2 rows and 24 columns Presolve time: 0.01s Presolved: 2626 rows, 1339 columns, 8724 nonzeros Variable types: 0 continuous, 1339 integer (1339 binary) Root relaxation: objective 0.000000e+00, 208 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 Fri Dec 14 18:23:47 2012 Optimize a model with 1362 rows, 787 columns and 4374 nonzeros Presolve removed 2 rows and 12 columns Presolve time: 0.00s Presolved: 1360 rows, 775 columns, 4362 nonzeros Variable types: 0 continuous, 775 integer (775 binary) Root relaxation: objective 0.000000e+00, 226 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 (363 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 Fri Dec 14 18:23:47 2012 Optimize a model with 729 rows, 499 columns and 2187 nonzeros Presolve removed 2 rows and 6 columns Presolve time: 0.00s Presolved: 727 rows, 493 columns, 2181 nonzeros Variable types: 0 continuous, 493 integer (493 binary) Root relaxation: objective 0.000000e+00, 222 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 0 156 - 0.00000 - - 0s 0 0 0.00000 0 170 - 0.00000 - - 0s 0 0 0.00000 0 158 - 0.00000 - - 0s 0 0 0.00000 0 161 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 1 Zero half: 10 Explored 0 nodes (2272 simplex iterations) in 0.10 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 Fri Dec 14 18:23:47 2012 Optimize a model with 307 rows, 307 columns and 729 nonzeros Presolve removed 307 rows and 307 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 Fri Dec 14 18:23:47 2012 Optimize a model with 518 rows, 403 columns and 1458 nonzeros Presolve removed 96 rows and 98 columns Presolve time: 0.00s Presolved: 422 rows, 305 columns, 1266 nonzeros Variable types: 0 continuous, 305 integer (305 binary) Root relaxation: objective 0.000000e+00, 102 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 94 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (379 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