current bounds on the number of colors: 0 -- 244 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:47 2012 Optimize a model with 39528 rows, 30090 columns and 147620 nonzeros Presolve removed 12 rows and 1464 columns Presolve time: 0.20s Presolved: 39516 rows, 28626 columns, 146156 nonzeros Variable types: 0 continuous, 28626 integer (28626 binary) Root relaxation: objective 0.000000e+00, 464 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 (464 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 -- 122 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:45:48 2012 Optimize a model with 19886 rows, 15206 columns and 73810 nonzeros Presolve removed 12 rows and 732 columns Presolve time: 0.13s Presolved: 19874 rows, 14474 columns, 73078 nonzeros Variable types: 0 continuous, 14474 integer (14474 binary) Root relaxation: objective 0.000000e+00, 454 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 (454 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 16:45:49 2012 Optimize a model with 9904 rows, 7642 columns and 36300 nonzeros Presolve removed 12 rows and 360 columns Presolve time: 0.06s Presolved: 9892 rows, 7282 columns, 35940 nonzeros Variable types: 0 continuous, 7282 integer (7282 binary) Root relaxation: objective 0.000000e+00, 452 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 (452 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 16:45:49 2012 Optimize a model with 5074 rows, 3982 columns and 18150 nonzeros Presolve removed 12 rows and 180 columns Presolve time: 0.02s Presolved: 5062 rows, 3802 columns, 17970 nonzeros Variable types: 0 continuous, 3802 integer (3802 binary) Root relaxation: objective 0.000000e+00, 482 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 (781 simplex iterations) in 0.04 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 16:45:49 2012 Optimize a model with 2498 rows, 2030 columns and 8470 nonzeros Presolve removed 12 rows and 84 columns Presolve time: 0.01s Presolved: 2486 rows, 1946 columns, 8386 nonzeros Variable types: 0 continuous, 1946 integer (1946 binary) Root relaxation: objective 0.000000e+00, 447 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 (447 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 16:45:49 2012 Optimize a model with 1210 rows, 1054 columns and 3630 nonzeros Presolve removed 12 rows and 36 columns Presolve time: 0.00s Presolved: 1198 rows, 1018 columns, 3594 nonzeros Variable types: 0 continuous, 1018 integer (1018 binary) Root relaxation: objective 0.000000e+00, 485 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 (671 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 16:45:49 2012 Optimize a model with 566 rows, 566 columns and 1210 nonzeros Presolve removed 566 rows and 566 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 16:45:49 2012 Optimize a model with 888 rows, 810 columns and 2420 nonzeros Presolve removed 246 rows and 259 columns Presolve time: 0.00s Presolved: 642 rows, 551 columns, 1926 nonzeros Variable types: 0 continuous, 551 integer (551 binary) Root relaxation: objective 0.000000e+00, 268 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 0 227 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (901 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