current bounds on the number of colors: 0 -- 137 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:38:15 2012 Optimize a model with 32369 rows, 9790 columns and 106012 nonzeros Presolve time: 0.15s Presolved: 32369 rows, 9790 columns, 106012 nonzeros Variable types: 0 continuous, 9790 integer (9790 binary) Root relaxation: objective 0.000000e+00, 474 iterations, 0.03 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 (763 simplex iterations) in 0.22 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 -- 68 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:38:16 2012 Optimize a model with 16253 rows, 5132 columns and 53006 nonzeros Presolve time: 0.08s Presolved: 16253 rows, 5132 columns, 53006 nonzeros Variable types: 0 continuous, 5132 integer (5132 binary) Root relaxation: objective 0.000000e+00, 399 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 (680 simplex iterations) in 0.12 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 -- 34 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:38:16 2012 Optimize a model with 8195 rows, 2803 columns and 26503 nonzeros Presolve time: 0.03s Presolved: 8195 rows, 2803 columns, 26503 nonzeros Variable types: 0 continuous, 2803 integer (2803 binary) Root relaxation: objective 0.000000e+00, 315 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 (569 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 -- 17 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:38:16 2012 Optimize a model with 3929 rows, 1570 columns and 12472 nonzeros Presolve time: 0.01s Presolved: 3929 rows, 1570 columns, 12472 nonzeros Variable types: 0 continuous, 1570 integer (1570 binary) Root relaxation: objective 0.000000e+00, 298 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 (536 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 -- 8 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:38:17 2012 Optimize a model with 2033 rows, 1022 columns and 6236 nonzeros Presolve time: 0.01s Presolved: 2033 rows, 1022 columns, 6236 nonzeros Variable types: 0 continuous, 1022 integer (1022 binary) Root relaxation: objective 0.000000e+00, 324 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 0 186 - 0.00000 - - 0s * 0 0 0 0.0000000 0.00000 0.0% - 0s Cutting planes: Gomory: 13 Clique: 17 Zero half: 78 Explored 0 nodes (3044 simplex iterations) in 0.20 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:38:17 2012 Optimize a model with 1085 rows, 748 columns and 3118 nonzeros Presolve removed 137 rows and 137 columns Presolve time: 0.00s Presolved: 948 rows, 611 columns, 2844 nonzeros Variable types: 0 continuous, 611 integer (611 binary) Root relaxation: objective 0.000000e+00, 144 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 0 137 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (578 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 -- 4 Gurobi 5.0.1 (linux64) logging started Fri Dec 14 18:38:17 2012 Optimize a model with 1559 rows, 885 columns and 4677 nonzeros Presolve time: 0.00s Presolved: 1559 rows, 885 columns, 4677 nonzeros Variable types: 0 continuous, 885 integer (885 binary) Root relaxation: objective 0.000000e+00, 343 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 0 266 - 0.00000 - - 0s 0 0 0.00000 0 266 - 0.00000 - - 0s 0 0 0.00000 0 263 - 0.00000 - - 0s 0 0 0.00000 0 317 - 0.00000 - - 0s 0 0 0.00000 0 254 - 0.00000 - - 0s 0 0 0.00000 0 301 - 0.00000 - - 0s 0 0 0.00000 0 334 - 0.00000 - - 0s 0 0 0.00000 0 350 - 0.00000 - - 1s 0 0 0.00000 0 310 - 0.00000 - - 1s 0 2 0.00000 0 296 - 0.00000 - - 1s Cutting planes: Zero half: 10 Explored 12 nodes (17157 simplex iterations) in 1.61 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - optimal solution found: number of colors: 4