current bounds on the number of colors: 0 -- 226 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:37 2012 Optimize a model with 31414 rows, 25814 columns and 119102 nonzeros Presolve removed 17 rows and 1921 columns Presolve time: 0.15s Presolved: 31397 rows, 23893 columns, 117181 nonzeros Variable types: 0 continuous, 23893 integer (23893 binary) Root relaxation: objective 0.000000e+00, 413 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 (626 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 -- 113 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:38 2012 Optimize a model with 15682 rows, 12932 columns and 59024 nonzeros Presolve removed 17 rows and 952 columns Presolve time: 0.12s Presolved: 15665 rows, 11980 columns, 58072 nonzeros Variable types: 0 continuous, 11980 integer (11980 binary) Root relaxation: objective 0.000000e+00, 411 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 (411 simplex iterations) in 0.13 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 -- 56 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:38 2012 Optimize a model with 7954 rows, 6604 columns and 29512 nonzeros Presolve removed 17 rows and 476 columns Presolve time: 0.05s Presolved: 7937 rows, 6128 columns, 29036 nonzeros Variable types: 0 continuous, 6128 integer (6128 binary) Root relaxation: objective 0.000000e+00, 434 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 (674 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 16:38:38 2012 Optimize a model with 4090 rows, 3440 columns and 14756 nonzeros Presolve removed 17 rows and 238 columns Presolve time: 0.02s Presolved: 4073 rows, 3202 columns, 14518 nonzeros Variable types: 0 continuous, 3202 integer (3202 binary) Root relaxation: objective 0.000000e+00, 409 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 (409 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 -- 14 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:38:38 2012 Optimize a model with 2158 rows, 1858 columns and 7378 nonzeros Presolve removed 17 rows and 119 columns Presolve time: 0.01s Presolved: 2141 rows, 1739 columns, 7259 nonzeros Variable types: 0 continuous, 1739 integer (1739 binary) Root relaxation: objective 0.000000e+00, 407 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 (595 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 16:38:38 2012 Optimize a model with 1054 rows, 954 columns and 3162 nonzeros Presolve removed 17 rows and 51 columns Presolve time: 0.00s Presolved: 1037 rows, 903 columns, 3111 nonzeros Variable types: 0 continuous, 903 integer (903 binary) Root relaxation: objective 0.000000e+00, 450 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 (630 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 16:38:38 2012 Optimize a model with 502 rows, 502 columns and 1054 nonzeros Presolve removed 502 rows and 502 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 16:38:38 2012 Optimize a model with 778 rows, 728 columns and 2108 nonzeros Presolve removed 232 rows and 252 columns Presolve time: 0.00s Presolved: 546 rows, 476 columns, 1638 nonzeros Variable types: 0 continuous, 476 integer (476 binary) Root relaxation: objective 0.000000e+00, 229 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 0 195 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (777 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