details

property	value
status	complete
benchmark	ttt1.xml
ran by	Akihisa Yamada
cpu timeout	1200 seconds
wallclock timeout	300 seconds
memory limit	137438953472 bytes
execution host	n179.star.cs.uiowa.edu
space	Secret_05_TRS

run statistics

property	value
solver	NTI-TC20-firstrun
configuration	Default 200
runtime (wallclock)	0.182409 seconds
cpu usage	0.275281
user time	0.229137
system time	0.046144
max virtual memory	113188.0
max residence set size	57404.0

stage attributes

key	value
starexec-result	NO

output

NO Prover = TRS(tech=GUIDED_UNF, nb_unfoldings=unlimited, unfold_variables=true, strategy=LEFTMOST_NE) ** BEGIN proof argument ** The following rule was generated while unfolding the analyzed TRS: [iteration = 2] f(cons(s(a),_0),s(b),cons(s(a),_0)) -> f(cons(s(a),_0),_0,cons(s(a),_0)) Let l be the left-hand side and r be the right-hand side of this rule. Let p = epsilon, theta1 = {_0->s(b)} and theta2 = {}. We have r|p = f(cons(s(a),_0),_0,cons(s(a),_0)) and theta2(theta1(l)) = theta1(r|p). Hence, the term theta1(l) = f(cons(s(a),s(b)),s(b),cons(s(a),s(b))) loops w.r.t. the analyzed TRS. ** END proof argument ** ** BEGIN proof description ** ## Searching for a generalized rewrite rule (a rule whose right-hand side contains a variable that does not occur in the left-hand side)... No generalized rewrite rule found! ## Searching for a loop by unfolding (unfolding of variable subterms: ON)... # Iteration 0: no loop detected, 1 unfolded rule generated. # Iteration 1: no loop detected, 6 unfolded rules generated. # Iteration 2: loop detected, 10 unfolded rules generated. Here is the successful unfolding. Let IR be the TRS under analysis. L0 = f^#(s(a),s(b),_0) -> f^#(_0,_0,_0) is in U_IR^0. Let p0 = [0]. We unfold the rule of L0 backwards at position p0 with the rule cons(_0,_1) -> _0. ==> L1 = f^#(cons(s(a),_0),s(b),cons(s(a),_0)) -> f^#(cons(s(a),_0),cons(s(a),_0),cons(s(a),_0)) is in U_IR^1. Let p1 = [1]. We unfold the rule of L1 forwards at position p1 with the rule cons(_0,_1) -> _1. ==> L2 = f^#(cons(s(a),s(b)),s(b),cons(s(a),s(b))) -> f^#(cons(s(a),s(b)),s(b),cons(s(a),s(b))) is in U_IR^2. ** END proof description ** Proof stopped at iteration 2 Number of unfolded rules generated by this proof = 17 Number of unfolded rules generated by all the parallel proofs = 18 popout

output may be truncated. 'popout' for the full output.

job log

popout

actions

all output return to TRS Standard