current bounds on the number of colors: 0 -- 176 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:22 2012 Optimize a model with 14960 rows, 15656 columns and 59840 nonzeros Presolve removed 21 rows and 1848 columns Presolve time: 0.12s Presolved: 14939 rows, 13808 columns, 57992 nonzeros Variable types: 0 continuous, 13808 integer (13808 binary) Root relaxation: objective 0.000000e+00, 279 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 (279 simplex iterations) in 0.13 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 -- 88 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:23 2012 Optimize a model with 7568 rows, 7912 columns and 29920 nonzeros Presolve removed 21 rows and 924 columns Presolve time: 0.07s Presolved: 7547 rows, 6988 columns, 28996 nonzeros Variable types: 0 continuous, 6988 integer (6988 binary) Root relaxation: objective 0.000000e+00, 273 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 (273 simplex iterations) in 0.07 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 -- 44 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:23 2012 Optimize a model with 3872 rows, 4040 columns and 14960 nonzeros Presolve removed 21 rows and 462 columns Presolve time: 0.02s Presolved: 3851 rows, 3578 columns, 14498 nonzeros Variable types: 0 continuous, 3578 integer (3578 binary) Root relaxation: objective 0.000000e+00, 276 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 (398 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 -- 22 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:24:23 2012 Optimize a model with 2024 rows, 2104 columns and 7480 nonzeros Presolve removed 21 rows and 231 columns Presolve time: 0.01s Presolved: 2003 rows, 1873 columns, 7249 nonzeros Variable types: 0 continuous, 1873 integer (1873 binary) Root relaxation: objective 0.000000e+00, 267 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 (386 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 16:24:23 2012 Optimize a model with 1016 rows, 1048 columns and 3400 nonzeros Presolve removed 21 rows and 105 columns Presolve time: 0.00s Presolved: 995 rows, 943 columns, 3295 nonzeros Variable types: 0 continuous, 943 integer (943 binary) Root relaxation: objective 0.000000e+00, 263 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 (374 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 16:24:23 2012 Optimize a model with 512 rows, 520 columns and 1360 nonzeros Presolve removed 184 rows and 209 columns Presolve time: 0.00s Presolved: 328 rows, 311 columns, 984 nonzeros Variable types: 0 continuous, 311 integer (311 binary) Root relaxation: objective 0.000000e+00, 148 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 0 117 - 0.00000 - - 0s Explored 0 nodes (495 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 16:24:23 2012 Optimize a model with 680 rows, 696 columns and 2040 nonzeros Presolve removed 21 rows and 63 columns Presolve time: 0.00s Presolved: 659 rows, 633 columns, 1977 nonzeros Variable types: 0 continuous, 633 integer (633 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 0.0000000 0.00000 0.0% - 0s Explored 0 nodes (331 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