current bounds on the number of colors: 0 -- 44 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:03:14 2012 Optimize a model with 10626 rows, 1449 columns and 32714 nonzeros Presolve time: 0.04s Presolved: 10626 rows, 1449 columns, 32714 nonzeros Variable types: 0 continuous, 1449 integer (1449 binary) Root relaxation: objective 0.000000e+00, 96 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 (360 simplex iterations) in 0.08 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 -- 22 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:03:14 2012 Optimize a model with 5335 rows, 965 columns and 16357 nonzeros Presolve time: 0.02s Presolved: 5335 rows, 965 columns, 16357 nonzeros Variable types: 0 continuous, 965 integer (965 binary) Root relaxation: objective 0.000000e+00, 94 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 8 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (829 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 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:03:14 2012 Optimize a model with 2449 rows, 701 columns and 7435 nonzeros Presolve time: 0.01s Presolved: 2449 rows, 701 columns, 7435 nonzeros Variable types: 0 continuous, 701 integer (701 binary) Root relaxation: objective 0.000000e+00, 91 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 58 - 0.00000 - - 0s 0 0 0.00000 0 58 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (1634 simplex iterations) in 0.17 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound 1.000000000000e+00, gap - current bounds on the number of colors: 5 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:03:15 2012 Optimize a model with 3892 rows, 833 columns and 11896 nonzeros Presolve time: 0.01s Presolved: 3892 rows, 833 columns, 11896 nonzeros Variable types: 0 continuous, 833 integer (833 binary) Root relaxation: objective 0.000000e+00, 88 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 48 - 0.00000 - - 0s 0 0 0.00000 0 24 - 0.00000 - - 0s 0 0 0.00000 0 111 - 0.00000 - - 0s 0 0 0.00000 0 171 - 0.00000 - - 0s 0 0 0.00000 0 142 - 0.00000 - - 0s 0 0 0.00000 0 109 - 0.00000 - - 1s 0 0 0.00000 0 155 - 0.00000 - - 1s 0 0 0.00000 0 151 - 0.00000 - - 1s 0 0 0.00000 0 176 - 0.00000 - - 2s 0 0 0.00000 0 176 - 0.00000 - - 2s 0 2 0.00000 0 176 - 0.00000 - - 2s Cutting planes: Clique: 81 Zero half: 6 Explored 34 nodes (25199 simplex iterations) in 2.92 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: 8 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 18:03:18 2012 Optimize a model with 4373 rows, 877 columns and 13383 nonzeros Presolve time: 0.01s Presolved: 4373 rows, 877 columns, 13383 nonzeros Variable types: 0 continuous, 877 integer (877 binary) Root relaxation: objective 0.000000e+00, 93 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 36 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 1 Clique: 43 MIR: 19 Zero half: 47 Explored 0 nodes (1175 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% optimal solution found: number of colors: 9