current bounds on the number of colors: 0 -- 85 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:41:55 2012 Optimize a model with 15247 rows, 3931 columns and 49056 nonzeros Presolve time: 0.08s Presolved: 15247 rows, 3931 columns, 49056 nonzeros Variable types: 0 continuous, 3931 integer (3931 binary) Root relaxation: objective 0.000000e+00, 236 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 (415 simplex iterations) in 0.11 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 -- 42 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:41:55 2012 Optimize a model with 7666 rows, 2146 columns and 24528 nonzeros Presolve time: 0.03s Presolved: 7666 rows, 2146 columns, 24528 nonzeros Variable types: 0 continuous, 2146 integer (2146 binary) Root relaxation: objective 0.000000e+00, 177 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 (342 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 -- 21 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:41:55 2012 Optimize a model with 3695 rows, 1211 columns and 11680 nonzeros Presolve time: 0.01s Presolved: 3695 rows, 1211 columns, 11680 nonzeros Variable types: 0 continuous, 1211 integer (1211 binary) Root relaxation: objective 0.000000e+00, 175 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 (309 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 -- 10 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:41:55 2012 Optimize a model with 1890 rows, 786 columns and 5840 nonzeros Presolve time: 0.00s Presolved: 1890 rows, 786 columns, 5840 nonzeros Variable types: 0 continuous, 786 integer (786 binary) Root relaxation: objective 0.000000e+00, 191 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 (987 simplex iterations) in 0.03 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 19:41:55 2012 Optimize a model with 807 rows, 531 columns and 2336 nonzeros Presolve removed 85 rows and 85 columns Presolve time: 0.00s Presolved: 722 rows, 446 columns, 2166 nonzeros Variable types: 0 continuous, 446 integer (446 binary) Root relaxation: objective 0.000000e+00, 87 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 85 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (348 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 19:41:56 2012 Optimize a model with 1168 rows, 616 columns and 3504 nonzeros Presolve time: 0.00s Presolved: 1168 rows, 616 columns, 3504 nonzeros Variable types: 0 continuous, 616 integer (616 binary) Root relaxation: objective 0.000000e+00, 192 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 0 128 - 0.00000 - - 0s 0 0 0.00000 0 168 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2363 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 19:41:56 2012 Optimize a model with 1529 rows, 701 columns and 4672 nonzeros Presolve time: 0.00s Presolved: 1529 rows, 701 columns, 4672 nonzeros Variable types: 0 continuous, 701 integer (701 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 0.00000 0 140 - 0.00000 - - 0s 0 0 0.00000 0 180 - 0.00000 - - 0s 0 0 0.00000 0 210 - 0.00000 - - 0s 0 0 0.00000 0 201 - 0.00000 - - 0s 0 0 0.00000 0 198 - 0.00000 - - 0s 0 0 0.00000 0 201 - 0.00000 - - 0s 0 0 0.00000 0 203 - 0.00000 - - 0s 0 0 0.00000 0 203 - 0.00000 - - 0s 0 2 0.00000 0 203 - 0.00000 - - 0s Cutting planes: Clique: 4 Zero half: 19 Explored 646 nodes (44611 simplex iterations) in 1.99 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