current bounds on the number of colors: 0 -- 246 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:39 2012 Optimize a model with 37638 rows, 30562 columns and 142434 nonzeros Presolve removed 14 rows and 1722 columns Presolve time: 0.19s Presolved: 37624 rows, 28840 columns, 140712 nonzeros Variable types: 0 continuous, 28840 integer (28840 binary) Root relaxation: objective 0.000000e+00, 445 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 (445 simplex iterations) in 0.23 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 -- 123 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:40 2012 Optimize a model with 18790 rows, 15310 columns and 70638 nonzeros Presolve removed 14 rows and 854 columns Presolve time: 0.13s Presolved: 18776 rows, 14456 columns, 69784 nonzeros Variable types: 0 continuous, 14456 integer (14456 binary) Root relaxation: objective 0.000000e+00, 445 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 (445 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 -- 61 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:40 2012 Optimize a model with 9366 rows, 7684 columns and 34740 nonzeros Presolve removed 14 rows and 420 columns Presolve time: 0.06s Presolved: 9352 rows, 7264 columns, 34320 nonzeros Variable types: 0 continuous, 7264 integer (7264 binary) Root relaxation: objective 0.000000e+00, 447 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 (447 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 -- 30 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:46:41 2012 Optimize a model with 4806 rows, 3994 columns and 17370 nonzeros Presolve removed 14 rows and 210 columns Presolve time: 0.02s Presolved: 4792 rows, 3784 columns, 17160 nonzeros Variable types: 0 continuous, 3784 integer (3784 binary) Root relaxation: objective 0.000000e+00, 457 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 (457 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 16:46:41 2012 Optimize a model with 2374 rows, 2026 columns and 8106 nonzeros Presolve removed 14 rows and 98 columns Presolve time: 0.01s Presolved: 2360 rows, 1928 columns, 8008 nonzeros Variable types: 0 continuous, 1928 integer (1928 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 (645 simplex iterations) in 0.02 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 16:46:41 2012 Optimize a model with 1158 rows, 1042 columns and 3474 nonzeros Presolve removed 14 rows and 42 columns Presolve time: 0.00s Presolved: 1144 rows, 1000 columns, 3432 nonzeros Variable types: 0 continuous, 1000 integer (1000 binary) Root relaxation: objective 0.000000e+00, 461 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 (461 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 16:46:41 2012 Optimize a model with 550 rows, 550 columns and 1158 nonzeros Presolve removed 550 rows and 550 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 16:46:41 2012 Optimize a model with 854 rows, 796 columns and 2316 nonzeros Presolve removed 250 rows and 266 columns Presolve time: 0.00s Presolved: 604 rows, 530 columns, 1812 nonzeros Variable types: 0 continuous, 530 integer (530 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 0.00000 0 228 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (842 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