current bounds on the number of colors: 0 -- 131 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:36 2012 Optimize a model with 6761 rows, 8617 columns and 28405 nonzeros Presolve removed 24 rows and 1560 columns Presolve time: 0.08s Presolved: 6737 rows, 7057 columns, 26845 nonzeros Variable types: 0 continuous, 7057 integer (7057 binary) Root relaxation: objective 0.000000e+00, 182 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 (182 simplex iterations) in 0.09 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 -- 65 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:36 2012 Optimize a model with 3395 rows, 4294 columns and 13984 nonzeros Presolve removed 24 rows and 768 columns Presolve time: 0.03s Presolved: 3371 rows, 3526 columns, 13216 nonzeros Variable types: 0 continuous, 3526 integer (3526 binary) Root relaxation: objective 0.000000e+00, 178 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 (178 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 -- 32 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:36 2012 Optimize a model with 1763 rows, 2198 columns and 6992 nonzeros Presolve removed 24 rows and 384 columns Presolve time: 0.01s Presolved: 1739 rows, 1814 columns, 6608 nonzeros Variable types: 0 continuous, 1814 integer (1814 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 (184 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 -- 16 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:36 2012 Optimize a model with 947 rows, 1150 columns and 3496 nonzeros Presolve removed 24 rows and 192 columns Presolve time: 0.00s Presolved: 923 rows, 958 columns, 3304 nonzeros Variable types: 0 continuous, 958 integer (958 binary) Root relaxation: objective 0.000000e+00, 174 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 (174 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 -- 8 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:36 2012 Optimize a model with 539 rows, 626 columns and 1748 nonzeros Presolve removed 24 rows and 96 columns Presolve time: 0.00s Presolved: 515 rows, 530 columns, 1652 nonzeros Variable types: 0 continuous, 530 integer (530 binary) Root relaxation: objective 0.000000e+00, 169 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 (169 simplex iterations) in 0.00 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:36 2012 Optimize a model with 335 rows, 364 columns and 874 nonzeros Presolve removed 143 rows and 173 columns Presolve time: 0.00s Presolved: 192 rows, 191 columns, 576 nonzeros Variable types: 0 continuous, 191 integer (191 binary) Root relaxation: objective 0.000000e+00, 93 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 76 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (309 simplex iterations) in 0.00 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 -- 4 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:17:36 2012 Optimize a model with 437 rows, 495 columns and 1311 nonzeros Presolve removed 24 rows and 72 columns Presolve time: 0.00s Presolved: 413 rows, 423 columns, 1239 nonzeros Variable types: 0 continuous, 423 integer (423 binary) Root relaxation: objective 0.000000e+00, 161 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 (211 simplex iterations) in 0.00 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% optimal solution found: number of colors: 3