4.21 Goto with reset

Positioning on a PO in force 0

Syntax

  gr(f.n)

with:

Use

This command enables to move to PO f.n while it reduces the proof force to 0 and keeps the saved proof commands unchanged.

From force 1, hypotheses of a proof obligation are all simplified during loading. This command will be useful if a proof obligation is such that raising its hypotheses makes the prover loop for a particular force (1,2, or 3).

Example

Given the proof obligation whose command line is:


 
        Force(3) &  
          Next  
 


If the gr command is carried out


 
PRI> gr(Calculus.1)  
 


the command line will be put back in force 0:


 
        Force(0) &  
          Next