/export/starexec/sandbox/solver/bin/starexec_run_default /export/starexec/sandbox/benchmark/theBenchmark.xml /export/starexec/sandbox/output/output_files -------------------------------------------------------------------------------- NO Problem 1: (VAR X XS) (RULES tail(cons(X)) -> XS zeros -> cons(0) ) Problem 1: Extra Variables Processor: -> Rules: tail(cons(X)) -> XS zeros -> cons(0) -> The system has extra variables. The problem is infinite.