current bounds on the number of colors: 0 -- 230 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:39:59 2012 Optimize a model with 32085 rows, 26727 columns and 122015 nonzeros Presolve removed 18 rows and 2070 columns Presolve time: 0.16s Presolved: 32067 rows, 24657 columns, 119945 nonzeros Variable types: 0 continuous, 24657 integer (24657 binary) Root relaxation: objective 0.000000e+00, 404 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 (593 simplex iterations) in 0.21 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 -- 115 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:00 2012 Optimize a model with 16019 rows, 13387 columns and 60477 nonzeros Presolve removed 18 rows and 1026 columns Presolve time: 0.12s Presolved: 16001 rows, 12361 columns, 59451 nonzeros Variable types: 0 continuous, 12361 integer (12361 binary) Root relaxation: objective 0.000000e+00, 404 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 (606 simplex iterations) in 0.15 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 -- 57 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:01 2012 Optimize a model with 7986 rows, 6717 columns and 29708 nonzeros Presolve removed 18 rows and 504 columns Presolve time: 0.05s Presolved: 7968 rows, 6213 columns, 29204 nonzeros Variable types: 0 continuous, 6213 integer (6213 binary) Root relaxation: objective 0.000000e+00, 401 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 (768 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 -- 28 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:40:01 2012 Optimize a model with 4108 rows, 3497 columns and 14854 nonzeros Presolve removed 18 rows and 252 columns Presolve time: 0.02s Presolved: 4090 rows, 3245 columns, 14602 nonzeros Variable types: 0 continuous, 3245 integer (3245 binary) Root relaxation: objective 0.000000e+00, 434 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 (680 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 16:40:01 2012 Optimize a model with 2169 rows, 1887 columns and 7427 nonzeros Presolve removed 18 rows and 126 columns Presolve time: 0.01s Presolved: 2151 rows, 1761 columns, 7301 nonzeros Variable types: 0 continuous, 1761 integer (1761 binary) Root relaxation: objective 0.000000e+00, 393 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 (393 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 16:40:01 2012 Optimize a model with 1061 rows, 967 columns and 3183 nonzeros Presolve removed 18 rows and 54 columns Presolve time: 0.00s Presolved: 1043 rows, 913 columns, 3129 nonzeros Variable types: 0 continuous, 913 integer (913 binary) Root relaxation: objective 0.000000e+00, 380 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 (380 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 16:40:01 2012 Optimize a model with 507 rows, 507 columns and 1061 nonzeros Presolve removed 507 rows and 507 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 16:40:01 2012 Optimize a model with 784 rows, 737 columns and 2122 nonzeros Presolve removed 234 rows and 254 columns Presolve time: 0.00s Presolved: 550 rows, 483 columns, 1650 nonzeros Variable types: 0 continuous, 483 integer (483 binary) Root relaxation: objective 0.000000e+00, 239 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 0 208 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (774 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