current bounds on the number of colors: 0 -- 89 Gurobi 5.0.1 (linux64) logging started Thu Dec 13 19:43:59 2012 Optimize a model with 17997 rows, 4323 columns and 57640 nonzeros Presolve time: 0.10s Presolved: 17997 rows, 4323 columns, 57640 nonzeros Variable types: 0 continuous, 4323 integer (4323 binary) Root relaxation: objective 0.000000e+00, 252 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 (476 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 19:44:00 2012 Optimize a model with 9043 rows, 2365 columns and 28820 nonzeros Presolve time: 0.03s Presolved: 9043 rows, 2365 columns, 28820 nonzeros Variable types: 0 continuous, 2365 integer (2365 binary) Root relaxation: objective 0.000000e+00, 204 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 (371 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 19:44:00 2012 Optimize a model with 4566 rows, 1386 columns and 14410 nonzeros Presolve time: 0.01s Presolved: 4566 rows, 1386 columns, 14410 nonzeros Variable types: 0 continuous, 1386 integer (1386 binary) Root relaxation: objective 0.000000e+00, 184 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 (340 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 19:44:00 2012 Optimize a model with 2124 rows, 852 columns and 6550 nonzeros Presolve time: 0.01s Presolved: 2124 rows, 852 columns, 6550 nonzeros Variable types: 0 continuous, 852 integer (852 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 0 115 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (1564 simplex iterations) in 0.07 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 19:44:00 2012 Optimize a model with 903 rows, 585 columns and 2620 nonzeros Presolve removed 89 rows and 89 columns Presolve time: 0.00s Presolved: 814 rows, 496 columns, 2442 nonzeros Variable types: 0 continuous, 496 integer (496 binary) Root relaxation: objective 0.000000e+00, 94 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 89 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (390 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 19:44:00 2012 Optimize a model with 1310 rows, 674 columns and 3930 nonzeros Presolve time: 0.00s Presolved: 1310 rows, 674 columns, 3930 nonzeros Variable types: 0 continuous, 674 integer (674 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 0.00000 0 176 - 0.00000 - - 0s 0 0 0.00000 0 172 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (2475 simplex iterations) in 0.19 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 19:44:00 2012 Optimize a model with 1717 rows, 763 columns and 5240 nonzeros Presolve time: 0.00s Presolved: 1717 rows, 763 columns, 5240 nonzeros Variable types: 0 continuous, 763 integer (763 binary) Root relaxation: objective 0.000000e+00, 203 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 0 170 - 0.00000 - - 0s 0 0 0.00000 0 154 - 0.00000 - - 0s 0 0 0.00000 0 220 - 0.00000 - - 0s 0 0 0.00000 0 218 - 0.00000 - - 0s 0 0 0.00000 0 214 - 0.00000 - - 0s 0 0 0.00000 0 215 - 0.00000 - - 0s 0 0 0.00000 0 211 - 0.00000 - - 0s 0 0 0.00000 0 205 - 0.00000 - - 0s 0 0 0.00000 0 208 - 0.00000 - - 0s 0 0 0.00000 0 208 - 0.00000 - - 0s 0 2 0.00000 0 208 - 0.00000 - - 1s Cutting planes: Clique: 4 Zero half: 30 Explored 160 nodes (23191 simplex iterations) in 1.69 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