current bounds on the number of colors: 0 -- 90 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:44:47 2012 Optimize a model with 17235 rows, 4431 columns and 55485 nonzeros Presolve time: 0.10s Presolved: 17235 rows, 4431 columns, 55485 nonzeros Variable types: 0 continuous, 4431 integer (4431 binary) Root relaxation: objective 0.000000e+00, 246 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 (425 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 19:44:47 2012 Optimize a model with 8472 rows, 2361 columns and 27126 nonzeros Presolve time: 0.03s Presolved: 8472 rows, 2361 columns, 27126 nonzeros Variable types: 0 continuous, 2361 integer (2361 binary) Root relaxation: objective 0.000000e+00, 204 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 (369 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 19:44:47 2012 Optimize a model with 4281 rows, 1371 columns and 13563 nonzeros Presolve time: 0.01s Presolved: 4281 rows, 1371 columns, 13563 nonzeros Variable types: 0 continuous, 1371 integer (1371 binary) Root relaxation: objective 0.000000e+00, 198 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 (366 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 19:44:48 2012 Optimize a model with 1995 rows, 831 columns and 6165 nonzeros Presolve time: 0.01s Presolved: 1995 rows, 831 columns, 6165 nonzeros Variable types: 0 continuous, 831 integer (831 binary) Root relaxation: objective 0.000000e+00, 206 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 10 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1203 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 19:44:48 2012 Optimize a model with 852 rows, 561 columns and 2466 nonzeros Presolve removed 90 rows and 90 columns Presolve time: 0.00s Presolved: 762 rows, 471 columns, 2286 nonzeros Variable types: 0 continuous, 471 integer (471 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 90 - 0.00000 - - 0s Explored 0 nodes (378 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 19:44:48 2012 Optimize a model with 1233 rows, 651 columns and 3699 nonzeros Presolve time: 0.00s Presolved: 1233 rows, 651 columns, 3699 nonzeros Variable types: 0 continuous, 651 integer (651 binary) Root relaxation: objective 0.000000e+00, 209 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 0 178 - 0.00000 - - 0s 0 0 0.00000 0 178 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (1920 simplex iterations) in 0.13 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 19:44:48 2012 Optimize a model with 1614 rows, 741 columns and 4932 nonzeros Presolve time: 0.00s Presolved: 1614 rows, 741 columns, 4932 nonzeros Variable types: 0 continuous, 741 integer (741 binary) Root relaxation: objective 0.000000e+00, 189 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 0 100 - 0.00000 - - 0s 0 0 0.00000 0 124 - 0.00000 - - 0s 0 0 0.00000 0 231 - 0.00000 - - 0s 0 0 0.00000 0 234 - 0.00000 - - 0s 0 0 0.00000 0 229 - 0.00000 - - 0s 0 0 0.00000 0 226 - 0.00000 - - 0s 0 0 0.00000 0 221 - 0.00000 - - 0s 0 0 0.00000 0 231 - 0.00000 - - 0s 0 0 0.00000 0 231 - 0.00000 - - 0s 0 2 0.00000 0 190 - 0.00000 - - 0s Cutting planes: Clique: 6 Zero half: 23 Explored 592 nodes (41355 simplex iterations) in 2.03 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