current bounds on the number of colors: 0 -- 233 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:08 2012 Optimize a model with 34685 rows, 27325 columns and 130384 nonzeros Presolve removed 15 rows and 1740 columns Presolve time: 0.17s Presolved: 34670 rows, 25585 columns, 128644 nonzeros Variable types: 0 continuous, 25585 integer (25585 binary) Root relaxation: objective 0.000000e+00, 407 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 (407 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 -- 116 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:09 2012 Optimize a model with 17459 rows, 13811 columns and 65192 nonzeros Presolve removed 15 rows and 870 columns Presolve time: 0.12s Presolved: 17444 rows, 12941 columns, 64322 nonzeros Variable types: 0 continuous, 12941 integer (12941 binary) Root relaxation: objective 0.000000e+00, 407 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 (407 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 -- 58 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:09 2012 Optimize a model with 8846 rows, 7054 columns and 32596 nonzeros Presolve removed 15 rows and 435 columns Presolve time: 0.05s Presolved: 8831 rows, 6619 columns, 32161 nonzeros Variable types: 0 continuous, 6619 integer (6619 binary) Root relaxation: objective 0.000000e+00, 400 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 (400 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 -- 29 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:09 2012 Optimize a model with 4391 rows, 3559 columns and 15736 nonzeros Presolve removed 15 rows and 210 columns Presolve time: 0.02s Presolved: 4376 rows, 3349 columns, 15526 nonzeros Variable types: 0 continuous, 3349 integer (3349 binary) Root relaxation: objective 0.000000e+00, 426 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 (426 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:10 2012 Optimize a model with 2312 rows, 1928 columns and 7868 nonzeros Presolve removed 15 rows and 105 columns Presolve time: 0.01s Presolved: 2297 rows, 1823 columns, 7763 nonzeros Variable types: 0 continuous, 1823 integer (1823 binary) Root relaxation: objective 0.000000e+00, 417 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 (417 simplex iterations) in 0.01 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 -- 7 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:10 2012 Optimize a model with 1124 rows, 996 columns and 3372 nonzeros Presolve removed 15 rows and 45 columns Presolve time: 0.00s Presolved: 1109 rows, 951 columns, 3327 nonzeros Variable types: 0 continuous, 951 integer (951 binary) Root relaxation: objective 0.000000e+00, 397 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 (397 simplex iterations) in 0.01 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:10 2012 Optimize a model with 530 rows, 530 columns and 1124 nonzeros Presolve removed 530 rows and 530 columns Presolve time: 0.00s Explored 0 nodes (0 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Model objective exceeds cutoff Best objective -, best bound -, gap - current bounds on the number of colors: 1 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:10 2012 Optimize a model with 827 rows, 763 columns and 2248 nonzeros Presolve removed 233 rows and 248 columns Presolve time: 0.00s Presolved: 594 rows, 515 columns, 1782 nonzeros Variable types: 0 continuous, 515 integer (515 binary) Root relaxation: objective 0.000000e+00, 251 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 0 214 - 0.00000 - - 0s Explored 0 nodes (810 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 - optimal solution found: number of colors: 3