kat: simplify functionality

kat

@@ -61,23 +61,10 @@ run_program() {
     fi
 }
 
-run_kdebug() {
-    local run_file strategy
-    run_file="$1" ; shift
-    strategy="$1" ; shift
-    run_krun "$run_file" "$strategy" --debugger "$@"
-}
-
-run_ksearch() {
-    local run_file strategy
-    run_file="$1" ; shift
-    strategy="$1" ; shift
-    run_krun "$run_file" "$strategy" --search "$@"
-}
-
 run_test() {
     local test_name test_ext test_file test_strat test_out test_expected
     local exec_strategy exit_status
+
     test_name="$1" ; shift
     exit_status='0'
 
@@ -123,33 +110,23 @@ run_command="$1" ; shift
 case "$run_command" in
 
     # Running
-    run)    run_program "$@" ;;
-    debug)  run_kdebug  "$@" ;;
-    search) run_ksearch "$@" ;;
+    run) run_program "$@" ;;
 
     # Testing
     test) run_test "$@" ;;
 
     *) echo "
-    usage: $0 [run|debug|search] <file> <strategy> <K args>*
+    usage: $0 run  <file> <strategy> <K args>*
+           $0 test <test_name>
 
        # Running
        # -------
-       $0 run      <pgm> <strategy>   Run a single program using given strategy
-       $0 debug    <pgm> <strategy>   Run a single program using given strategy in the debugger
-       $0 search   <pgm> <strategy>   Search a single program's executions using given strategy
+       $0 run:  Run a single program using given strategy
+       $0 test: Test that running a program with given strategies produces the correct output.
 
        Note: <pgm> is a path to a file containing a program (languages supported: IMP, FUN).
              <strategy> is a term in sort STRATEGY.
                         If `STRATEGY == orig`, then it runs with the *original* semantics under the OCaml backend.
-
-       # Testing
-       # -------
-       $0 test <pgm> <hash>   Test that running with `run-orig` produces the correct hash.
-
-       Note: <pgm>          is the path to the program in `tests/`
-             <hash>         is the expected md5sum of the output
-
-       Note: This command is more for devs and CI servers.
+             <test_name> name of a test in `tests/imp` or `tests/fun` without extension, eg. `tests/imp/collatz`.
 " ; exit ;;
 esac