/export/starexec/sandbox2/solver/bin/starexec_run_ttt2-1.17+nonreach /export/starexec/sandbox2/benchmark/theBenchmark.xml /export/starexec/sandbox2/output/output_files


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MAYBE

Problem:
 eq(0(),0()) -> true()
 eq(0(),s(x)) -> false()
 eq(s(x),0()) -> false()
 eq(s(x),s(y)) -> eq(x,y)
 or(true(),y) -> true()
 or(false(),y) -> y
 and(true(),y) -> y
 and(false(),y) -> false()
 size(empty()) -> 0()
 size(edge(x,y,i)) -> s(size(i))
 le(0(),y) -> true()
 le(s(x),0()) -> false()
 le(s(x),s(y)) -> le(x,y)
 reachable(x,y,i) -> reach(x,y,0(),i,i)
 reach(x,y,c,i,j) -> if1(eq(x,y),x,y,c,i,j)
 if1(true(),x,y,c,i,j) -> true()
 if1(false(),x,y,c,i,j) -> if2(le(c,size(j)),x,y,c,i,j)
 if2(false(),x,y,c,i,j) -> false()
 if2(true(),x,y,c,empty(),j) -> false()
 if2(true(),x,y,c,edge(u,v,i),j) -> or(if2(true(),x,y,c,i,j),and(eq(x,u),reach(v,y,s(c),j,j)))

Proof:
 Open