----- Otter 3.0.4, August 1995 -----
The job was started by brings on hopfield.phil.rpi.edu, Wed Mar 25 10:56:04 1998
The command was "otter".

set(ur_res).
assign(max_proofs,2).

list(usable).
1 [] -Brother(x,y)| -Richer(x,y)|BiggerTractor(x,y).
2 [] Richer(conrad,selmer).
3 [] -Brother(x,y)|Brother(y,x).
4 [] -BiggerTractor(x,y)|Info(x,y).
end_of_list.

list(sos).
5 [] Brother(selmer,conrad).
6 [] BiggerTractor(brian,conrad).
end_of_list.

list(passive).
7 [] -Info(x,y)|$ANSWER(biggertractor(x,y)).
end_of_list.

======= end of input processing =======

=========== start of search ===========

given clause #1: (wt=3) 5 [] Brother(selmer,conrad).
** KEPT (pick-wt=3): 8 [ur,5,3] Brother(conrad,selmer).

given clause #2: (wt=3) 6 [] BiggerTractor(brian,conrad).
** KEPT (pick-wt=3): 9 [ur,6,4] Info(brian,conrad).

----> UNIT CONFLICT at   0.04 sec ----> 10 [binary,9.1,7.1] $ANSWER(biggertractor(brian,conrad)).

Length of proof is 1.  Level of proof is 1.

---------------- PROOF ----------------

4 [] -BiggerTractor(x,y)|Info(x,y).
6 [] BiggerTractor(brian,conrad).
7 [] -Info(x,y)|$ANSWER(biggertractor(x,y)).
9 [ur,6,4] Info(brian,conrad).
10 [binary,9.1,7.1] $ANSWER(biggertractor(brian,conrad)).

------------ end of proof -------------


given clause #3: (wt=3) 8 [ur,5,3] Brother(conrad,selmer).
** KEPT (pick-wt=3): 11 [ur,8,1,2] BiggerTractor(conrad,selmer).

given clause #4: (wt=3) 9 [ur,6,4] Info(brian,conrad).

given clause #5: (wt=3) 11 [ur,8,1,2] BiggerTractor(conrad,selmer).
** KEPT (pick-wt=3): 12 [ur,11,4] Info(conrad,selmer).

----> UNIT CONFLICT at   0.05 sec ----> 13 [binary,12.1,7.1] $ANSWER(biggertractor(conrad,selmer)).

Length of proof is 3.  Level of proof is 3.

---------------- PROOF ----------------

1 [] -Brother(x,y)| -Richer(x,y)|BiggerTractor(x,y).
2 [] Richer(conrad,selmer).
3 [] -Brother(x,y)|Brother(y,x).
4 [] -BiggerTractor(x,y)|Info(x,y).
5 [] Brother(selmer,conrad).
7 [] -Info(x,y)|$ANSWER(biggertractor(x,y)).
8 [ur,5,3] Brother(conrad,selmer).
11 [ur,8,1,2] BiggerTractor(conrad,selmer).
12 [ur,11,4] Info(conrad,selmer).
13 [binary,12.1,7.1] $ANSWER(biggertractor(conrad,selmer)).

------------ end of proof -------------


Search stopped by max_proofs option.

============ end of search ============

-------------- statistics -------------
clauses given                  5
clauses generated              5
  ur_res generated             5
demod & eval rewrites          0
clauses wt,lit,sk delete       0
tautologies deleted            0
clauses forward subsumed       1
  (subsumed by sos)            0
unit deletions                 0
factor simplifications         0
clauses kept                   4
new demodulators               0
empty clauses                  2
clauses back demodulated       0
clauses back subsumed          0
usable size                    9
sos size                       1
demodulators size              0
passive size                   1
hot size                       0
Kbytes malloced               63

----------- times (seconds) -----------
user CPU time          0.05          (0 hr, 0 min, 0 sec)
system CPU time        0.12          (0 hr, 0 min, 0 sec)
wall-clock time        0             (0 hr, 0 min, 0 sec)
input time             0.01
  clausify time        0.00
ur_res time            0.00
pre_process time       0.02
  renumber time        0.00
  demod time           0.00
  order equalities     0.00
  unit deleletion      0.00
  factor simplify      0.00
  weigh cl time        0.00
  hints keep time      0.00
  sort lits time       0.00
  forward subsume      0.00
  delete cl time       0.00
  keep cl time         0.00
    hints time         0.00
  print_cl time        0.00
  conflict time        0.02
  new demod time       0.00
post_process time      0.00
  back demod time      0.00
  back subsume         0.00
  factor time          0.00
  unindex time         0.00

The job finished        Wed Mar 25 10:56:04 1998