1:      1  1 CALL pred mmos_print.main/2-0 (det) mmos_print.m:13
mdb> echo on
Command echo enabled.
mdb> register --quiet
mdb> print *
mdb: there are no live variables.
mdb> step
       2:      2  2 CALL pred mmos_print.tc/2-0 (nondet) mmos_print.m:21
mdb> print *
       A (arg 1)              	1
mdb> step
tc(1)        1:      1  1 CALL pred mmos_print.GeneratorFor_pred__tc__0/1-0 (nondet) mmos_print.m:21
mdb> print *
mdb: there are no live variables.
mdb> step
tc(1)        2:      2  2 CALL pred mmos_print.edge/2-0 (nondet) mmos_print.m:31 (mmos_print.m:22)
mdb> print *
       HeadVar__1             	1
mdb> step
tc(1)        3:      2  2 SWTC pred mmos_print.edge/2-0 (nondet) s1-na; mmos_print.m:31
mdb> print *
       HeadVar__1             	1
mdb> quit -y