current bounds on the number of colors: 0 -- 237 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:54 2012 Optimize a model with 32333 rows, 28238 columns and 124254 nonzeros Presolve removed 18 rows and 2124 columns Presolve time: 0.14s Presolved: 32315 rows, 26114 columns, 122130 nonzeros Variable types: 0 continuous, 26114 integer (26114 binary) Root relaxation: objective 0.000000e+00, 403 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 (614 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 -- 118 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:54 2012 Optimize a model with 16285 rows, 14255 columns and 62127 nonzeros Presolve removed 18 rows and 1062 columns Presolve time: 0.12s Presolved: 16267 rows, 13193 columns, 61065 nonzeros Variable types: 0 continuous, 13193 integer (13193 binary) Root relaxation: objective 0.000000e+00, 403 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 (592 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 -- 59 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:42:55 2012 Optimize a model with 8125 rows, 7145 columns and 30537 nonzeros Presolve removed 18 rows and 522 columns Presolve time: 0.05s Presolved: 8107 rows, 6623 columns, 30015 nonzeros Variable types: 0 continuous, 6623 integer (6623 binary) Root relaxation: objective 0.000000e+00, 401 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 (401 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 16:42:55 2012 Optimize a model with 4045 rows, 3590 columns and 14742 nonzeros Presolve removed 18 rows and 252 columns Presolve time: 0.02s Presolved: 4027 rows, 3338 columns, 14490 nonzeros Variable types: 0 continuous, 3338 integer (3338 binary) Root relaxation: objective 0.000000e+00, 434 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 (679 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 16:42:55 2012 Optimize a model with 2141 rows, 1931 columns and 7371 nonzeros Presolve removed 18 rows and 126 columns Presolve time: 0.01s Presolved: 2123 rows, 1805 columns, 7245 nonzeros Variable types: 0 continuous, 1805 integer (1805 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 (598 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 16:42:55 2012 Optimize a model with 1053 rows, 983 columns and 3159 nonzeros Presolve removed 18 rows and 54 columns Presolve time: 0.00s Presolved: 1035 rows, 929 columns, 3105 nonzeros Variable types: 0 continuous, 929 integer (929 binary) Root relaxation: objective 0.000000e+00, 423 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 (582 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 16:42:55 2012 Optimize a model with 509 rows, 509 columns and 1053 nonzeros Presolve removed 509 rows and 509 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 16:42:55 2012 Optimize a model with 781 rows, 746 columns and 2106 nonzeros Presolve removed 239 rows and 258 columns Presolve time: 0.00s Presolved: 542 rows, 488 columns, 1626 nonzeros Variable types: 0 continuous, 488 integer (488 binary) Root relaxation: objective 0.000000e+00, 255 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 0 214 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (819 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