current bounds on the number of colors: 0 -- 239 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:49 2012 Optimize a model with 36296 rows, 28744 columns and 136612 nonzeros Presolve removed 23 rows and 2737 columns Presolve time: 0.18s Presolved: 36273 rows, 26007 columns, 133875 nonzeros Variable types: 0 continuous, 26007 integer (26007 binary) Root relaxation: objective 0.000000e+00, 412 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 (412 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 -- 119 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:50 2012 Optimize a model with 18116 rows, 14404 columns and 67732 nonzeros Presolve removed 23 rows and 1357 columns Presolve time: 0.12s Presolved: 18093 rows, 13047 columns, 66375 nonzeros Variable types: 0 continuous, 13047 integer (13047 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 (413 simplex iterations) in 0.14 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 -- 59 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:50 2012 Optimize a model with 9026 rows, 7234 columns and 33292 nonzeros Presolve removed 23 rows and 667 columns Presolve time: 0.05s Presolved: 9003 rows, 6567 columns, 32625 nonzeros Variable types: 0 continuous, 6567 integer (6567 binary) Root relaxation: objective 0.000000e+00, 415 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 (415 simplex iterations) in 0.06 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 -- 29 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:43:50 2012 Optimize a model with 4481 rows, 3649 columns and 16072 nonzeros Presolve removed 23 rows and 322 columns Presolve time: 0.02s Presolved: 4458 rows, 3327 columns, 15750 nonzeros Variable types: 0 continuous, 3327 integer (3327 binary) Root relaxation: objective 0.000000e+00, 432 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 (665 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 16:43:50 2012 Optimize a model with 2360 rows, 1976 columns and 8036 nonzeros Presolve removed 23 rows and 161 columns Presolve time: 0.01s Presolved: 2337 rows, 1815 columns, 7875 nonzeros Variable types: 0 continuous, 1815 integer (1815 binary) Root relaxation: objective 0.000000e+00, 404 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 (404 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 16:43:50 2012 Optimize a model with 1148 rows, 1020 columns and 3444 nonzeros Presolve removed 23 rows and 69 columns Presolve time: 0.00s Presolved: 1125 rows, 951 columns, 3375 nonzeros Variable types: 0 continuous, 951 integer (951 binary) Root relaxation: objective 0.000000e+00, 460 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 (730 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 16:43:50 2012 Optimize a model with 542 rows, 542 columns and 1148 nonzeros Presolve removed 542 rows and 542 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 16:43:51 2012 Optimize a model with 845 rows, 781 columns and 2296 nonzeros Presolve removed 239 rows and 262 columns Presolve time: 0.00s Presolved: 606 rows, 519 columns, 1818 nonzeros Variable types: 0 continuous, 519 integer (519 binary) Root relaxation: objective 0.000000e+00, 250 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 0 216 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (809 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