current bounds on the number of colors: 0 -- 234 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:30 2012 Optimize a model with 32643 rows, 27655 columns and 124605 nonzeros Presolve removed 14 rows and 1638 columns Presolve time: 0.14s Presolved: 32629 rows, 26017 columns, 122967 nonzeros Variable types: 0 continuous, 26017 integer (26017 binary) Root relaxation: objective 0.000000e+00, 428 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 (634 simplex iterations) in 0.20 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 -- 117 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:31 2012 Optimize a model with 16300 rows, 13849 columns and 61770 nonzeros Presolve removed 14 rows and 812 columns Presolve time: 0.12s Presolved: 16286 rows, 13037 columns, 60958 nonzeros Variable types: 0 continuous, 13037 integer (13037 binary) Root relaxation: objective 0.000000e+00, 423 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 (651 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 -- 58 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:41:31 2012 Optimize a model with 8267 rows, 7063 columns and 30885 nonzeros Presolve removed 14 rows and 406 columns Presolve time: 0.05s Presolved: 8253 rows, 6657 columns, 30479 nonzeros Variable types: 0 continuous, 6657 integer (6657 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 16:41:31 2012 Optimize a model with 4112 rows, 3553 columns and 14910 nonzeros Presolve removed 14 rows and 196 columns Presolve time: 0.02s Presolved: 4098 rows, 3357 columns, 14714 nonzeros Variable types: 0 continuous, 3357 integer (3357 binary) Root relaxation: objective 0.000000e+00, 440 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 (684 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 16:41:31 2012 Optimize a model with 2173 rows, 1915 columns and 7455 nonzeros Presolve removed 14 rows and 98 columns Presolve time: 0.01s Presolved: 2159 rows, 1817 columns, 7357 nonzeros Variable types: 0 continuous, 1817 integer (1817 binary) Root relaxation: objective 0.000000e+00, 421 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 (612 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 16:41:31 2012 Optimize a model with 1065 rows, 979 columns and 3195 nonzeros Presolve removed 14 rows and 42 columns Presolve time: 0.00s Presolved: 1051 rows, 937 columns, 3153 nonzeros Variable types: 0 continuous, 937 integer (937 binary) Root relaxation: objective 0.000000e+00, 420 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 8 - 0.00000 - - 0s H 0 0 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (693 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 16:41:31 2012 Optimize a model with 511 rows, 511 columns and 1065 nonzeros Presolve removed 511 rows and 511 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 16:41:31 2012 Optimize a model with 788 rows, 745 columns and 2130 nonzeros Presolve removed 238 rows and 254 columns Presolve time: 0.00s Presolved: 550 rows, 491 columns, 1650 nonzeros Variable types: 0 continuous, 491 integer (491 binary) Root relaxation: objective 0.000000e+00, 243 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 0 213 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (769 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