if the solver detects an infinite loop of calls > c -3 means illegal input was detected, before taking any > c taking any steps, then an illegal input return the optional output tolsf may be used for this > c parameters must be reset, and istate must be set > c completing the requested task, but the integration > c -2 means too much accuracy was requested for the precision > c this error return (see below on optional inputs). > c in addition, the user may increase mxstep to avoid > c (the excess work step counter will be reset to 0). > c and is normally 500.) to continue, the user may > c requested task, but the integration was otherwise > c steps) was done on this call, before completing the > c -1 means an excessive amount of work (more than mxstep > c 2 means the integration was performed successfully. > c set to detect and prevent repeated calls of this type.) > c 1 means nothing was done, as tout was equal to t with > c on output, istate has the following values and meanings.
> imbedded in fortran code in the odesolve package. (Solution component i vanished, and atol or atol(i) = > or tolerances.), -6 means error weight became zero during (Perhaps bad Jacobian supplied or wrong choice of MF
(Check all input), -5 means repeated convergence (See printed message.), -4 means repeated error test (Tolerances too small), -3 means illegal input > successful, -1 if excess work done, -2 means excess accuracy > where LSODA return values are mentioned. > You can safely assume that it has some problems with integration > of the error code, but LSODA is the integrator behind ADVAN13. Sometimes it is necessary to make random changes in the code and initial values and see if it helps. I am getting quite a few messages like that and it takes a while to figure out a solution.
Changing to ADVAN8 caused "numerical difficulties with integration routine", but now it is clear where the issue may come from.Īdding a careful explanation of error codes and recomendations to fix the issues may help a lot. Thank you for the elaborate and useful reply.ĪDVAN13 was used.