extending the test data generators to take the evaluation terms as arguments

adding option of evaluating terms after invocation in quickcheck

adding eval option to quickcheck

handling a quite restricted set of functions in Quickcheck_Narrowing by an easy transformation

adding minimalistic setup and transformation to handle functions as data to enable naive function generation for Quickcheck_Narrowing

adding a simple datatype for representing functions in Quickcheck_Narrowing

extending code_int type more; adding narrowing instance for type int; added test case for int instance

translating bash output in quickcheck_narrowing to handle special characters; adding simple test cases

adding size as static argument in quickcheck_narrowing compilation

modernized specifications;

dropped unused structure aliases;

tuned;

NEWS: structure Timing provides various operations for timing;

simplified various cpu_time clones (!): eliminated odd Exn.capture/Exn.release (no need to "stop" timing);

pure Timing.timing, without any exception handling; clarified cond_timeit: propagate interrupt without side-effect;

structure Timing: covers former start_timing/end_timing and Output.timeit etc; explicit Timing.message function; eliminated Output.timing flag, cf. Toplevel.timing; tuned;

pervasive cond_timeit;

eliminated dead code;

parallel preparation of document variants, within separate directories;

Present.init/finish/no_document are not thread-safe -- eliminated futile CRITICAL sections; tuned;

eliminated redundant doc_prefix1; tuned;

renamed doc_prefix2 to dump_prefix;

tuned;

tuned terminology for document variants;

replaced File.check by specific File.check_file, File.check_dir; clarified File.full_path -- include parts of former Thy_Load.get_file; simplified Thy_Load.check_file -- do not read/digest yet; merged Thy_Load.check_thy/deps_thy -- always read text and parse header; clarified Thy_Header.read -- NB: partial Path.explode outside of args parser combinator; Thy_Info.check_deps etc.: File.read exactly once;

tuned;

preencode value of "need" selectors in Kodkod bounds as an optimization

ignore "need" axioms for "nat"-like types

added "simp:", "intro:", and "elim:" to "try" command

optimize Kodkod axioms further w.r.t. "need" option