current bounds on the number of colors: 0 -- 210 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:04 2012 Optimize a model with 23625 rows, 22273 columns and 92295 nonzeros Presolve removed 26 rows and 2730 columns Presolve time: 0.14s Presolved: 23599 rows, 19543 columns, 89565 nonzeros Variable types: 0 continuous, 19543 integer (19543 binary) Root relaxation: objective 0.000000e+00, 351 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 (351 simplex iterations) in 0.16 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 -- 105 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:05 2012 Optimize a model with 11806 rows, 11143 columns and 45708 nonzeros Presolve removed 26 rows and 1352 columns Presolve time: 0.11s Presolved: 11780 rows, 9791 columns, 44356 nonzeros Variable types: 0 continuous, 9791 integer (9791 binary) Root relaxation: objective 0.000000e+00, 351 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 (351 simplex iterations) in 0.12 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 -- 52 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:05 2012 Optimize a model with 6008 rows, 5683 columns and 22854 nonzeros Presolve removed 26 rows and 676 columns Presolve time: 0.04s Presolved: 5982 rows, 5007 columns, 22178 nonzeros Variable types: 0 continuous, 5007 integer (5007 binary) Root relaxation: objective 0.000000e+00, 349 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 (349 simplex iterations) in 0.04 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 -- 26 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:05 2012 Optimize a model with 3109 rows, 2953 columns and 11427 nonzeros Presolve removed 26 rows and 338 columns Presolve time: 0.01s Presolved: 3083 rows, 2615 columns, 11089 nonzeros Variable types: 0 continuous, 2615 integer (2615 binary) Root relaxation: objective 0.000000e+00, 345 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 (345 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:05 2012 Optimize a model with 1548 rows, 1483 columns and 5274 nonzeros Presolve removed 26 rows and 156 columns Presolve time: 0.01s Presolved: 1522 rows, 1327 columns, 5118 nonzeros Variable types: 0 continuous, 1327 integer (1327 binary) Root relaxation: objective 0.000000e+00, 327 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 (327 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:33:05 2012 Optimize a model with 879 rows, 853 columns and 2637 nonzeros Presolve removed 26 rows and 78 columns Presolve time: 0.00s Presolved: 853 rows, 775 columns, 2559 nonzeros Variable types: 0 continuous, 775 integer (775 binary) Root relaxation: objective 0.000000e+00, 343 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 (485 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 16:33:05 2012 Optimize a model with 433 rows, 433 columns and 879 nonzeros Presolve removed 433 rows and 433 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 16:33:05 2012 Optimize a model with 656 rows, 643 columns and 1758 nonzeros Presolve removed 216 rows and 245 columns Presolve time: 0.00s Presolved: 440 rows, 398 columns, 1320 nonzeros Variable types: 0 continuous, 398 integer (398 binary) Root relaxation: objective 0.000000e+00, 208 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 0 175 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (644 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