Hello. I really don't understand much the solver's message printed when we solve a model. Could someone provide details or link of understand these lines? preferably with example
Solving model....
! --------------------------------------------------- CP Optimizer 20.1.0.0 --
! Minimization problem - 18 variables, 8 constraints
! FailLimit = 30000
! Initial process time : 0.01s (0.01s extraction + 0.00s propagation)
! . Log search space : 16.6 (before), 16.6 (after)
! . Memory usage : 442.4 kB (before), 442.4 kB (after)
! Using parallel search with 8 workers.
! ----------------------------------------------------------------------------
! Best Branches Non-fixed W Branch decision
0 18 -
+ New bound is 90; 40
! Using temporal relaxation.
0 18 1 -
+ New bound is 91; 40
* 93 11 0.05s 1 (gap is 2.15% @ crit. 1 of 2)
New objective is 93; 80
* 92 24 0.05s 1 (gap is 1.09% @ crit. 1 of 2)
New objective is 92; 80
* 92 34 0.05s 1 (gap is 1.09% @ crit. 1 of 2)
New objective is 92; 78
* 91 44 0.05s 1 (gap is 50.00% @ crit. 2 of 2)
New objective is 91; 80
* 91 54 0.05s 1 (gap is 45.95% @ crit. 2 of 2)
New objective is 91; 74
91 945 4 1 F 28 >= startOf(Line_2_Mat_3)
+ New bound is 91; 74 (gap is 0.00%)
! ----------------------------------------------------------------------------
! Search completed, 5 solutions found.
! Best objective : 91; 74 (optimal)
! Best bound : 91; 74
! ----------------------------------------------------------------------------
! Number of branches : 4355
! Number of fails : 2020
! Total memory usage : 4.0 MB (4.0 MB CP Optimizer + 0.0 MB Concert)
! Time spent in solve : 0.05s (0.04s engine + 0.01s extraction)
! Search speed (br. / s) : 108875.0
! ----------------------------------------------------------------------------
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Avinash Kumar
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#DecisionOptimization