current bounds on the number of colors: 0 -- 187 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:50 2012 Optimize a model with 19159 rows, 17595 columns and 74307 nonzeros Presolve removed 16 rows and 1488 columns Presolve time: 0.12s Presolved: 19143 rows, 16107 columns, 72819 nonzeros Variable types: 0 continuous, 16107 integer (16107 binary) Root relaxation: objective 0.000000e+00, 310 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 (310 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 -- 93 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:51 2012 Optimize a model with 9571 rows, 8806 columns and 36754 nonzeros Presolve removed 16 rows and 736 columns Presolve time: 0.08s Presolved: 9555 rows, 8070 columns, 36018 nonzeros Variable types: 0 continuous, 8070 integer (8070 binary) Root relaxation: objective 0.000000e+00, 311 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 (311 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 -- 46 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:51 2012 Optimize a model with 4879 rows, 4505 columns and 18377 nonzeros Presolve removed 16 rows and 368 columns Presolve time: 0.03s Presolved: 4863 rows, 4137 columns, 18009 nonzeros Variable types: 0 continuous, 4137 integer (4137 binary) Root relaxation: objective 0.000000e+00, 306 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 (306 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 -- 23 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:51 2012 Optimize a model with 2431 rows, 2261 columns and 8789 nonzeros Presolve removed 16 rows and 176 columns Presolve time: 0.01s Presolved: 2415 rows, 2085 columns, 8613 nonzeros Variable types: 0 continuous, 2085 integer (2085 binary) Root relaxation: objective 0.000000e+00, 308 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 (308 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 -- 11 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:51 2012 Optimize a model with 1207 rows, 1139 columns and 3995 nonzeros Presolve removed 16 rows and 80 columns Presolve time: 0.00s Presolved: 1191 rows, 1059 columns, 3915 nonzeros Variable types: 0 continuous, 1059 integer (1059 binary) Root relaxation: objective 0.000000e+00, 281 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 (281 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 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:51 2012 Optimize a model with 595 rows, 578 columns and 1598 nonzeros Presolve removed 193 rows and 212 columns Presolve time: 0.00s Presolved: 402 rows, 366 columns, 1206 nonzeros Variable types: 0 continuous, 366 integer (366 binary) Root relaxation: objective 0.000000e+00, 190 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 0 162 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (602 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 - current bounds on the number of colors: 2 -- 5 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:26:51 2012 Optimize a model with 799 rows, 765 columns and 2397 nonzeros Presolve removed 16 rows and 48 columns Presolve time: 0.00s Presolved: 783 rows, 717 columns, 2349 nonzeros Variable types: 0 continuous, 717 integer (717 binary) Root relaxation: objective 0.000000e+00, 292 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 (292 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