current bounds on the number of colors: 0 -- 88 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:43:43 2012 Optimize a model with 16940 rows, 4255 columns and 54428 nonzeros Presolve time: 0.09s Presolved: 16940 rows, 4255 columns, 54428 nonzeros Variable types: 0 continuous, 4255 integer (4255 binary) Root relaxation: objective 0.000000e+00, 300 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 (533 simplex iterations) in 0.14 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 -- 44 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:43:43 2012 Optimize a model with 8514 rows, 2319 columns and 27214 nonzeros Presolve time: 0.03s Presolved: 8514 rows, 2319 columns, 27214 nonzeros Variable types: 0 continuous, 2319 integer (2319 binary) Root relaxation: objective 0.000000e+00, 214 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 (488 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 -- 22 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:43:43 2012 Optimize a model with 4301 rows, 1351 columns and 13607 nonzeros Presolve time: 0.01s Presolved: 4301 rows, 1351 columns, 13607 nonzeros Variable types: 0 continuous, 1351 integer (1351 binary) Root relaxation: objective 0.000000e+00, 187 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 (354 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 19:43:43 2012 Optimize a model with 2003 rows, 823 columns and 6185 nonzeros Presolve time: 0.01s Presolved: 2003 rows, 823 columns, 6185 nonzeros Variable types: 0 continuous, 823 integer (823 binary) Root relaxation: objective 0.000000e+00, 196 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 52 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1111 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 19:43:43 2012 Optimize a model with 854 rows, 559 columns and 2474 nonzeros Presolve removed 88 rows and 88 columns Presolve time: 0.00s Presolved: 766 rows, 471 columns, 2298 nonzeros Variable types: 0 continuous, 471 integer (471 binary) Root relaxation: objective 0.000000e+00, 90 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 88 - 0.00000 - - 0s Explored 0 nodes (349 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 19:43:43 2012 Optimize a model with 1237 rows, 647 columns and 3711 nonzeros Presolve time: 0.00s Presolved: 1237 rows, 647 columns, 3711 nonzeros Variable types: 0 continuous, 647 integer (647 binary) Root relaxation: objective 0.000000e+00, 199 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 0 172 - 0.00000 - - 0s 0 0 0.00000 0 172 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (1899 simplex iterations) in 0.12 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 19:43:43 2012 Optimize a model with 1620 rows, 735 columns and 4948 nonzeros Presolve time: 0.00s Presolved: 1620 rows, 735 columns, 4948 nonzeros Variable types: 0 continuous, 735 integer (735 binary) Root relaxation: objective 0.000000e+00, 200 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 0 164 - 0.00000 - - 0s 0 0 0.00000 0 160 - 0.00000 - - 0s 0 0 0.00000 0 166 - 0.00000 - - 0s 0 0 0.00000 0 231 - 0.00000 - - 0s 0 0 0.00000 0 140 - 0.00000 - - 0s 0 0 0.00000 0 136 - 0.00000 - - 0s 0 0 0.00000 0 146 - 0.00000 - - 0s 0 0 0.00000 0 166 - 0.00000 - - 0s 0 0 0.00000 0 151 - 0.00000 - - 0s 0 0 0.00000 0 133 - 0.00000 - - 0s 0 0 0.00000 0 177 - 0.00000 - - 0s 0 0 0.00000 0 177 - 0.00000 - - 1s 0 2 0.00000 0 177 - 0.00000 - - 1s 609 68 0.00000 10 203 - 0.00000 - 65.9 5s Cutting planes: Gomory: 2 Clique: 2 Zero half: 19 Explored 794 nodes (92902 simplex iterations) in 9.00 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