current bounds on the number of colors: 0 -- 248 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:38 2012 Optimize a model with 41540 rows, 31085 columns and 154628 nonzeros Presolve removed 19 rows and 2356 columns Presolve time: 0.20s Presolved: 41521 rows, 28729 columns, 152272 nonzeros Variable types: 0 continuous, 28729 integer (28729 binary) Root relaxation: objective 0.000000e+00, 462 iterations, 0.02 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 (462 simplex iterations) in 0.24 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 -- 124 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:38 2012 Optimize a model with 20894 rows, 15709 columns and 77314 nonzeros Presolve removed 19 rows and 1178 columns Presolve time: 0.13s Presolved: 20875 rows, 14531 columns, 76136 nonzeros Variable types: 0 continuous, 14531 integer (14531 binary) Root relaxation: objective 0.000000e+00, 462 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 (462 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 -- 62 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:39 2012 Optimize a model with 10571 rows, 8021 columns and 38657 nonzeros Presolve removed 19 rows and 589 columns Presolve time: 0.07s Presolved: 10552 rows, 7432 columns, 38068 nonzeros Variable types: 0 continuous, 7432 integer (7432 binary) Root relaxation: objective 0.000000e+00, 450 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 (450 simplex iterations) in 0.08 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 -- 31 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:39 2012 Optimize a model with 5243 rows, 4053 columns and 18705 nonzeros Presolve removed 19 rows and 285 columns Presolve time: 0.02s Presolved: 5224 rows, 3768 columns, 18420 nonzeros Variable types: 0 continuous, 3768 integer (3768 binary) Root relaxation: objective 0.000000e+00, 480 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 (480 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 -- 15 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:47:39 2012 Optimize a model with 2579 rows, 2069 columns and 8729 nonzeros Presolve removed 19 rows and 133 columns Presolve time: 0.01s Presolved: 2560 rows, 1936 columns, 8596 nonzeros Variable types: 0 continuous, 1936 integer (1936 binary) Root relaxation: objective 0.000000e+00, 437 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 (437 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 16:47:39 2012 Optimize a model with 1247 rows, 1077 columns and 3741 nonzeros Presolve removed 19 rows and 57 columns Presolve time: 0.00s Presolved: 1228 rows, 1020 columns, 3684 nonzeros Variable types: 0 continuous, 1020 integer (1020 binary) Root relaxation: objective 0.000000e+00, 502 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 (712 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 16:47:39 2012 Optimize a model with 581 rows, 581 columns and 1247 nonzeros Presolve removed 581 rows and 581 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 16:47:39 2012 Optimize a model with 914 rows, 829 columns and 2494 nonzeros Presolve removed 252 rows and 273 columns Presolve time: 0.00s Presolved: 662 rows, 556 columns, 1986 nonzeros Variable types: 0 continuous, 556 integer (556 binary) Root relaxation: objective 0.000000e+00, 257 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 0 225 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (863 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