current bounds on the number of colors: 0 -- 223 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:24 2012 Optimize a model with 27529 rows, 24999 columns and 106671 nonzeros Presolve removed 32 rows and 3552 columns Presolve time: 0.14s Presolved: 27497 rows, 21447 columns, 103119 nonzeros Variable types: 0 continuous, 21447 integer (21447 binary) Root relaxation: objective 0.000000e+00, 371 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 (371 simplex iterations) in 0.16 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 -- 111 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:25 2012 Optimize a model with 13753 rows, 12511 columns and 52855 nonzeros Presolve removed 32 rows and 1760 columns Presolve time: 0.13s Presolved: 13721 rows, 10751 columns, 51095 nonzeros Variable types: 0 continuous, 10751 integer (10751 binary) Root relaxation: objective 0.000000e+00, 372 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 (372 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 -- 55 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:25 2012 Optimize a model with 6865 rows, 6267 columns and 25947 nonzeros Presolve removed 32 rows and 864 columns Presolve time: 0.04s Presolved: 6833 rows, 5403 columns, 25083 nonzeros Variable types: 0 continuous, 5403 integer (5403 binary) Root relaxation: objective 0.000000e+00, 368 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 (368 simplex iterations) in 0.05 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 -- 27 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:25 2012 Optimize a model with 3421 rows, 3145 columns and 12493 nonzeros Presolve removed 32 rows and 416 columns Presolve time: 0.01s Presolved: 3389 rows, 2729 columns, 12077 nonzeros Variable types: 0 continuous, 2729 integer (2729 binary) Root relaxation: objective 0.000000e+00, 378 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 (572 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 -- 13 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:25 2012 Optimize a model with 1699 rows, 1584 columns and 5766 nonzeros Presolve removed 32 rows and 192 columns Presolve time: 0.01s Presolved: 1667 rows, 1392 columns, 5574 nonzeros Variable types: 0 continuous, 1392 integer (1392 binary) Root relaxation: objective 0.000000e+00, 347 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 (347 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 -- 6 Gurobi 5.0.1 (linux64) logging started Sat Dec 15 16:37:25 2012 Optimize a model with 961 rows, 915 columns and 2883 nonzeros Presolve removed 32 rows and 96 columns Presolve time: 0.00s Presolved: 929 rows, 819 columns, 2787 nonzeros Variable types: 0 continuous, 819 integer (819 binary) Root relaxation: objective 0.000000e+00, 366 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 (528 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 16:37:25 2012 Optimize a model with 469 rows, 469 columns and 961 nonzeros Presolve removed 469 rows and 469 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 16:37:25 2012 Optimize a model with 715 rows, 692 columns and 1922 nonzeros Presolve removed 227 rows and 261 columns Presolve time: 0.00s Presolved: 488 rows, 431 columns, 1464 nonzeros Variable types: 0 continuous, 431 integer (431 binary) Root relaxation: objective 0.000000e+00, 200 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 0 183 - 0.00000 - - 0s 0 0 infeasible 0 - 0.10000 - - 0s Explored 0 nodes (689 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