current bounds on the number of colors: 0 -- 245 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:25 2012 Optimize a model with 37699 rows, 30197 columns and 142252 nonzeros Presolve removed 23 rows and 2806 columns Presolve time: 0.19s Presolved: 37676 rows, 27391 columns, 139446 nonzeros Variable types: 0 continuous, 27391 integer (27391 binary) Root relaxation: objective 0.000000e+00, 425 iterations, 0.02 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 (425 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 -- 122 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:26 2012 Optimize a model with 18972 rows, 15252 columns and 71126 nonzeros Presolve removed 23 rows and 1403 columns Presolve time: 0.13s Presolved: 18949 rows, 13849 columns, 69723 nonzeros Variable types: 0 continuous, 13849 integer (13849 binary) Root relaxation: objective 0.000000e+00, 425 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 (425 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 -- 61 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:27 2012 Optimize a model with 9455 rows, 7657 columns and 34980 nonzeros Presolve removed 23 rows and 690 columns Presolve time: 0.06s Presolved: 9432 rows, 6967 columns, 34290 nonzeros Variable types: 0 continuous, 6967 integer (6967 binary) Root relaxation: objective 0.000000e+00, 425 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 (425 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 -- 30 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:27 2012 Optimize a model with 4850 rows, 3982 columns and 17490 nonzeros Presolve removed 23 rows and 345 columns Presolve time: 0.02s Presolved: 4827 rows, 3637 columns, 17145 nonzeros Variable types: 0 continuous, 3637 integer (3637 binary) Root relaxation: objective 0.000000e+00, 448 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 (704 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:27 2012 Optimize a model with 2394 rows, 2022 columns and 8162 nonzeros Presolve removed 23 rows and 161 columns Presolve time: 0.01s Presolved: 2371 rows, 1861 columns, 8001 nonzeros Variable types: 0 continuous, 1861 integer (1861 binary) Root relaxation: objective 0.000000e+00, 430 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 (430 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 16:46:27 2012 Optimize a model with 1166 rows, 1042 columns and 3498 nonzeros Presolve removed 23 rows and 69 columns Presolve time: 0.00s Presolved: 1143 rows, 973 columns, 3429 nonzeros Variable types: 0 continuous, 973 integer (973 binary) Root relaxation: objective 0.000000e+00, 543 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 12 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (972 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 -- 3 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:27 2012 Optimize a model with 552 rows, 552 columns and 1166 nonzeros Presolve removed 552 rows and 552 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 16:46:27 2012 Optimize a model with 859 rows, 797 columns and 2332 nonzeros Presolve removed 251 rows and 277 columns Presolve time: 0.00s Presolved: 608 rows, 520 columns, 1824 nonzeros Variable types: 0 continuous, 520 integer (520 binary) Root relaxation: objective 0.000000e+00, 234 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 0 210 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (797 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