diff --git a/fd-pb-e2/ipc-2002_depots-strips-automatic_20.env b/fd-pb-e2/ipc-2002_depots-strips-automatic_20.env
new file mode 100644
index 000000000..f3c3ef4e1
--- /dev/null
+++ b/fd-pb-e2/ipc-2002_depots-strips-automatic_20.env
@@ -0,0 +1,40 @@
+command:
+- timeout
+- -m=9216000
+- -t=900
+- python3
+- /home/pluehne/Documents/ASP/plasp-javier/encodings/planner/runplanner.py
+- --domain=/home/pluehne/Documents/ASP/pddl-instances/ipc-2002/domains/depots-strips-automatic/domain.pddl
+- /home/pluehne/Documents/ASP/pddl-instances/ipc-2002/domains/depots-strips-automatic/instances/instance-20.pddl
+- --stats
+- --verbose
+- --print-call
+- -m 8192
+- --translate
+- -B 0.9
+- --parallel=2
+configuration:
+  id: fd-pb-e2
+  instanceSets:
+  - lpnmr-hard-instances
+  options:
+  - --stats
+  - --verbose
+  - --print-call
+  - -m 8192
+  - --translate
+  - -B 0.9
+  - --parallel=2
+exitCode: 1
+instance:
+  domain: depots-strips-automatic
+  instance: 20
+  ipc: ipc-2002
+versions:
+  clingo: 5.2.2
+  fastDownward: 10997:847cdf0069cab0c8841a9958e783d1a7340fe2e9 (2017-11-02 15:10 +0100)
+  planner: 61750c0521c6104870e5b881c8b0c237e2af4a96 (2017-11-27 07:44:27 +0100)
+  plasp: 3.1.1
+  python: 3.6.3
+workingDirectory: /home/pluehne/Documents/ASP/plasp-javier/encodings/planner
+
diff --git a/fd-pb-e2/ipc-2002_depots-strips-automatic_20.err b/fd-pb-e2/ipc-2002_depots-strips-automatic_20.err
new file mode 100644
index 000000000..4d63760dc
--- /dev/null
+++ b/fd-pb-e2/ipc-2002_depots-strips-automatic_20.err
@@ -0,0 +1,26 @@
+# configuration: {'id': 'fd-pb-e2', 'options': ['--stats', '--verbose', '--print-call', '-m 8192', '--translate', '-B 0.9', '--parallel=2'], 'instanceSets': ['lpnmr-hard-instances']}
+# instance: {'ipc': 'ipc-2002', 'domain': 'depots-strips-automatic', 'instance': 20}
+# command: ['timeout', '-m=9216000', '-t=900', 'python3', '/home/pluehne/Documents/ASP/plasp-javier/encodings/planner/runplanner.py', '--domain=/home/pluehne/Documents/ASP/pddl-instances/ipc-2002/domains/depots-strips-automatic/domain.pddl', '/home/pluehne/Documents/ASP/pddl-instances/ipc-2002/domains/depots-strips-automatic/instances/instance-20.pddl', '--stats', '--verbose', '--print-call', '-m 8192', '--translate', '-B 0.9', '--parallel=2']
+# working directory: /home/pluehne/Documents/ASP/plasp-javier/encodings/planner
+# exit code: 1
+/home/pluehne/Documents/ASP/plasp-javier/encodings/strips/preprocess.lp:13:4-34: info: atom does not occur in any rule head:
+  requires(feature(actionCosts))
+
+/home/pluehne/Documents/ASP/plasp-javier/encodings/strips/preprocess.lp:14:4-33: info: atom does not occur in any rule head:
+  requires(feature(axiomRules))
+
+/home/pluehne/Documents/ASP/plasp-javier/encodings/strips/preprocess.lp:15:4-41: info: atom does not occur in any rule head:
+  requires(feature(conditionalEffects))
+
+Traceback (most recent call last):
+  File "/home/pluehne/Documents/ASP/plasp-javier/encodings/planner/planner.py", line 945, in <module>
+    Planner().run(options, clingo_options)
+  File "/home/pluehne/Documents/ASP/plasp-javier/encodings/planner/planner.py", line 705, in run
+    length = scheduler.next(result)
+  File "/home/pluehne/Documents/ASP/plasp-javier/encodings/planner/planner.py", line 231, in next
+    first = self.__next_runs[0]
+IndexError: list index out of range
+# planner call: /home/wv/bin/linux/64/fast-downward/fast-downward.py --translate --build=release64 /home/pluehne/Documents/ASP/pddl-instances/ipc-2002/domains/depots-strips-automatic/domain.pddl /home/pluehne/Documents/ASP/pddl-instances/ipc-2002/domains/depots-strips-automatic/instances/instance-20.pddl && plasp-3.1.1 translate --parsing-mode=compatibility output.sas | /home/pluehne/Documents/ASP/plasp-javier/encodings/planner/planner.py - /home/pluehne/Documents/ASP/plasp-javier/encodings/strips/preprocess.lp /home/pluehne/Documents/ASP/plasp-javier/encodings/strips/strips-incremental.lp --stats --verbose -m 8192 -B 0.9  --query-at-last --check-at-last --forbid-actions --force-actions -c planner_on=1   -c _closure=3   -c _parallel=2 
+FINISHED CPU 114.70 MEM 0 MAXMEM 5554396 STALE 1 MAXMEM_RSS 5195580
+<time name="ALL">114580</time>
+
diff --git a/fd-pb-e2/ipc-2002_depots-strips-automatic_20.out b/fd-pb-e2/ipc-2002_depots-strips-automatic_20.out
new file mode 100644
index 000000000..d02092251
--- /dev/null
+++ b/fd-pb-e2/ipc-2002_depots-strips-automatic_20.out
@@ -0,0 +1,138 @@
+INFO     Running translator.
+INFO     translator input: ['/home/pluehne/Documents/ASP/pddl-instances/ipc-2002/domains/depots-strips-automatic/domain.pddl', '/home/pluehne/Documents/ASP/pddl-instances/ipc-2002/domains/depots-strips-automatic/instances/instance-20.pddl']
+INFO     translator arguments: []
+INFO     translator time limit: None
+INFO     translator memory limit: None
+INFO     callstring: /home/pluehne/.usr/bin/python /home/wv/bin/linux/64/fast-downward-10997/builds/release64/bin/translate/translate.py /home/pluehne/Documents/ASP/pddl-instances/ipc-2002/domains/depots-strips-automatic/domain.pddl /home/pluehne/Documents/ASP/pddl-instances/ipc-2002/domains/depots-strips-automatic/instances/instance-20.pddl
+Parsing...
+Parsing: [0.020s CPU, 0.022s wall-clock]
+Normalizing task... [0.000s CPU, 0.002s wall-clock]
+Instantiating...
+Generating Datalog program... [0.010s CPU, 0.011s wall-clock]
+Normalizing Datalog program...
+Normalizing Datalog program: [0.020s CPU, 0.022s wall-clock]
+Preparing model... [0.020s CPU, 0.022s wall-clock]
+Generated 43 rules.
+Computing model... [1.000s CPU, 0.996s wall-clock]
+7130 relevant atoms
+5437 auxiliary atoms
+12567 final queue length
+27375 total queue pushes
+Completing instantiation... [2.490s CPU, 2.488s wall-clock]
+Instantiating: [3.550s CPU, 3.551s wall-clock]
+Computing fact groups...
+Finding invariants...
+16 initial candidates
+Finding invariants: [0.060s CPU, 0.065s wall-clock]
+Checking invariant weight... [0.010s CPU, 0.008s wall-clock]
+Instantiating groups... [0.150s CPU, 0.141s wall-clock]
+Collecting mutex groups... [0.010s CPU, 0.005s wall-clock]
+Choosing groups...
+51 uncovered facts
+Choosing groups: [0.030s CPU, 0.030s wall-clock]
+Building translation key... [0.010s CPU, 0.011s wall-clock]
+Computing fact groups: [0.310s CPU, 0.311s wall-clock]
+Building STRIPS to SAS dictionary... [0.010s CPU, 0.005s wall-clock]
+Building dictionary for full mutex groups... [0.100s CPU, 0.105s wall-clock]
+Building mutex information...
+Building mutex information: [0.020s CPU, 0.018s wall-clock]
+Translating task...
+Processing axioms...
+Simplifying axioms... [0.000s CPU, 0.000s wall-clock]
+Processing axioms: [0.140s CPU, 0.135s wall-clock]
+Translating task: [2.990s CPU, 2.988s wall-clock]
+8070 effect conditions simplified
+0 implied preconditions added
+Detecting unreachable propositions...
+0 operators removed
+0 axioms removed
+70 propositions removed
+Detecting unreachable propositions: [1.400s CPU, 1.394s wall-clock]
+Reordering and filtering variables...
+67 of 67 variables necessary.
+48 of 67 mutex groups necessary.
+5894 of 5894 operators necessary.
+0 of 0 axiom rules necessary.
+Reordering and filtering variables: [0.660s CPU, 0.660s wall-clock]
+Translator variables: 67
+Translator derived variables: 0
+Translator facts: 773
+Translator goal facts: 14
+Translator mutex groups: 48
+Translator total mutex groups size: 993
+Translator operators: 5894
+Translator axioms: 0
+Translator task size: 52919
+Translator peak memory: 69068 KB
+Writing output... [0.890s CPU, 0.952s wall-clock]
+Done! [10.060s CPU, 10.120s wall-clock]
+planner.py version 0.0.1
+
+Time:	 37.63s
+Memory: 1969MB
+
+Iteration 1
+Queue:		 [(0,0,0,True), (1,5,0,True), (2,10,0,True), (3,15,0,True), (4,20,0,True), (5,25,0,True), (6,30,0,True)]
+Grounded Until:	 0
+Solving...
+Solving Time:	 0.16s
+Memory:		 1969MB (+0MB)
+UNSAT
+Iteration Time:	 0.16s
+
+Iteration 2
+Queue:		 [(1,5,0,True), (2,10,0,True), (3,15,0,True), (4,20,0,True), (5,25,0,True), (6,30,0,True)]
+Grounded Until:	 0
+Expected Memory: 1969MB
+Grounding...	 [('step', [1]), ('step', [2]), ('step', [3]), ('step', [4]), ('step', [5]), ('check', [5])]
+Grounding Time:	 40.21s
+Memory:		 5033MB (+3064MB)
+Unblocking actions...
+Solving...
+Solving Time:	 1.84s
+Memory:		 5276MB (+243MB)
+UNSAT
+Iteration Time:	 57.88s
+
+Iteration 3
+Queue:		 [(2,10,0,True), (3,15,0,True), (4,20,0,True), (5,25,0,True), (6,30,0,True)]
+Grounded Until:	 5
+Expected Memory: 8583.0MB
+Skipping: not enough memory for grounding...
+
+Iteration Time:	 0.00s
+
+Iteration 4
+Queue:		 [(3,15,0,True), (4,20,0,True), (5,25,0,True), (6,30,0,True)]
+Grounded Until:	 5
+Expected Memory: 11890.0MB
+Skipping: not enough memory for grounding...
+
+Iteration Time:	 0.00s
+
+Iteration 5
+Queue:		 [(4,20,0,True), (5,25,0,True), (6,30,0,True)]
+Grounded Until:	 5
+Expected Memory: 15197.0MB
+Skipping: not enough memory for grounding...
+
+Iteration Time:	 0.00s
+
+Iteration 6
+Queue:		 [(5,25,0,True), (6,30,0,True)]
+Grounded Until:	 5
+Expected Memory: 18504.0MB
+Skipping: not enough memory for grounding...
+
+Iteration Time:	 0.00s
+
+Iteration 7
+Queue:		 [(6,30,0,True)]
+Grounded Until:	 5
+Expected Memory: 21811.0MB
+Skipping: not enough memory for grounding...
+
+Iteration Time:	 0.00s
+
+Iteration 8
+