current bounds on the number of colors: 0 -- 90 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:07 2012 Optimize a model with 17325 rows, 4433 columns and 55755 nonzeros Presolve time: 0.10s Presolved: 17325 rows, 4433 columns, 55755 nonzeros Variable types: 0 continuous, 4433 integer (4433 binary) Root relaxation: objective 0.000000e+00, 228 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 (427 simplex iterations) in 0.13 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 -- 45 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:07 2012 Optimize a model with 8516 rows, 2363 columns and 27258 nonzeros Presolve time: 0.03s Presolved: 8516 rows, 2363 columns, 27258 nonzeros Variable types: 0 continuous, 2363 integer (2363 binary) Root relaxation: objective 0.000000e+00, 185 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 (360 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 -- 22 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:07 2012 Optimize a model with 4303 rows, 1373 columns and 13629 nonzeros Presolve time: 0.01s Presolved: 4303 rows, 1373 columns, 13629 nonzeros Variable types: 0 continuous, 1373 integer (1373 binary) Root relaxation: objective 0.000000e+00, 182 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 (326 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 -- 11 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:07 2012 Optimize a model with 2005 rows, 833 columns and 6195 nonzeros Presolve time: 0.01s Presolved: 2005 rows, 833 columns, 6195 nonzeros Variable types: 0 continuous, 833 integer (833 binary) Root relaxation: objective 0.000000e+00, 218 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 69 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1309 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 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:07 2012 Optimize a model with 856 rows, 563 columns and 2478 nonzeros Presolve removed 90 rows and 90 columns Presolve time: 0.00s Presolved: 766 rows, 473 columns, 2298 nonzeros Variable types: 0 continuous, 473 integer (473 binary) Root relaxation: objective 0.000000e+00, 96 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 90 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (376 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 - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:07 2012 Optimize a model with 1239 rows, 653 columns and 3717 nonzeros Presolve time: 0.00s Presolved: 1239 rows, 653 columns, 3717 nonzeros Variable types: 0 continuous, 653 integer (653 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 0.00000 0 180 - 0.00000 - - 0s 0 0 0.00000 0 178 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2020 simplex iterations) in 0.15 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: 3 -- 5 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:45:07 2012 Optimize a model with 1622 rows, 743 columns and 4956 nonzeros Presolve time: 0.00s Presolved: 1622 rows, 743 columns, 4956 nonzeros Variable types: 0 continuous, 743 integer (743 binary) Root relaxation: objective 0.000000e+00, 193 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 0 116 - 0.00000 - - 0s 0 0 0.00000 0 126 - 0.00000 - - 0s 0 0 0.00000 0 146 - 0.00000 - - 0s 0 0 0.00000 0 228 - 0.00000 - - 0s 0 0 0.00000 0 220 - 0.00000 - - 0s 0 0 0.00000 0 226 - 0.00000 - - 0s 0 0 0.00000 0 238 - 0.00000 - - 0s 0 0 0.00000 0 238 - 0.00000 - - 0s 0 2 0.00000 0 238 - 0.00000 - - 0s Cutting planes: Clique: 6 Zero half: 16 Explored 873 nodes (64368 simplex iterations) in 2.87 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 5