java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/SifaC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --sifa.abstract.domain ExplicitValueDomain --rcfgbuilder.size.of.a.code.block SingleStatement --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.intern.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_DDA -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 19:44:00,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 19:44:00,239 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 19:44:00,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 19:44:00,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 19:44:00,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 19:44:00,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 19:44:00,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 19:44:00,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 19:44:00,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 19:44:00,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 19:44:00,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 19:44:00,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 19:44:00,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 19:44:00,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 19:44:00,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 19:44:00,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 19:44:00,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 19:44:00,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 19:44:00,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 19:44:00,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 19:44:00,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 19:44:00,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 19:44:00,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 19:44:00,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 19:44:00,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 19:44:00,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 19:44:00,279 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 19:44:00,279 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 19:44:00,280 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 19:44:00,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 19:44:00,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 19:44:00,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 19:44:00,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 19:44:00,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 19:44:00,287 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 19:44:00,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 19:44:00,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 19:44:00,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 19:44:00,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 19:44:00,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 19:44:00,292 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-20 19:44:00,313 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 19:44:00,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 19:44:00,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 19:44:00,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 19:44:00,316 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 19:44:00,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 19:44:00,316 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 19:44:00,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 19:44:00,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 19:44:00,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 19:44:00,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 19:44:00,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 19:44:00,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 19:44:00,318 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 19:44:00,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 19:44:00,319 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 19:44:00,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 19:44:00,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 19:44:00,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 19:44:00,319 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 19:44:00,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 19:44:00,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 19:44:00,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 19:44:00,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 19:44:00,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 19:44:00,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 19:44:00,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 19:44:00,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 19:44:00,322 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> ExplicitValueDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Intern Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_DDA [2019-09-20 19:44:00,383 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 19:44:00,397 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 19:44:00,402 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 19:44:00,403 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 19:44:00,404 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 19:44:00,404 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2019-09-20 19:44:00,478 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/257f72bc3/8554f9d6633d48209ccedcbf90d9e882/FLAGaa3701c4e [2019-09-20 19:44:01,043 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 19:44:01,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.1.ufo.BOUNDED-10.pals.c [2019-09-20 19:44:01,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/257f72bc3/8554f9d6633d48209ccedcbf90d9e882/FLAGaa3701c4e [2019-09-20 19:44:01,304 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/257f72bc3/8554f9d6633d48209ccedcbf90d9e882 [2019-09-20 19:44:01,312 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 19:44:01,313 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 19:44:01,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 19:44:01,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 19:44:01,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 19:44:01,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:44:01" (1/1) ... [2019-09-20 19:44:01,321 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465f8fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:44:01, skipping insertion in model container [2019-09-20 19:44:01,321 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:44:01" (1/1) ... [2019-09-20 19:44:01,326 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 19:44:01,386 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 19:44:01,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 19:44:01,755 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 19:44:01,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 19:44:01,853 INFO L192 MainTranslator]: Completed translation [2019-09-20 19:44:01,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:44:01 WrapperNode [2019-09-20 19:44:01,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 19:44:01,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 19:44:01,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 19:44:01,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 19:44:01,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:44:01" (1/1) ... [2019-09-20 19:44:01,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:44:01" (1/1) ... [2019-09-20 19:44:01,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:44:01" (1/1) ... [2019-09-20 19:44:01,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:44:01" (1/1) ... [2019-09-20 19:44:01,909 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:44:01" (1/1) ... [2019-09-20 19:44:01,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:44:01" (1/1) ... [2019-09-20 19:44:01,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:44:01" (1/1) ... [2019-09-20 19:44:01,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 19:44:01,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 19:44:01,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 19:44:01,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 19:44:01,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:44:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 19:44:02,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 19:44:02,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 19:44:02,002 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side1_failed_history [2019-09-20 19:44:02,002 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2019-09-20 19:44:02,003 INFO L138 BoogieDeclarations]: Found implementation of procedure write_side2_failed_history [2019-09-20 19:44:02,003 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2019-09-20 19:44:02,003 INFO L138 BoogieDeclarations]: Found implementation of procedure write_active_side_history [2019-09-20 19:44:02,003 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2019-09-20 19:44:02,003 INFO L138 BoogieDeclarations]: Found implementation of procedure write_manual_selection_history [2019-09-20 19:44:02,003 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2019-09-20 19:44:02,004 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-09-20 19:44:02,004 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2019-09-20 19:44:02,004 INFO L138 BoogieDeclarations]: Found implementation of procedure Console_task_each_pals_period [2019-09-20 19:44:02,004 INFO L138 BoogieDeclarations]: Found implementation of procedure Side1_activestandby_task_each_pals_period [2019-09-20 19:44:02,004 INFO L138 BoogieDeclarations]: Found implementation of procedure Side2_activestandby_task_each_pals_period [2019-09-20 19:44:02,004 INFO L138 BoogieDeclarations]: Found implementation of procedure Pendulum_prism_task_each_pals_period [2019-09-20 19:44:02,005 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-09-20 19:44:02,005 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 19:44:02,005 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2019-09-20 19:44:02,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 19:44:02,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-20 19:44:02,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-20 19:44:02,006 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-20 19:44:02,006 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-20 19:44:02,006 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-20 19:44:02,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 19:44:02,006 INFO L130 BoogieDeclarations]: Found specification of procedure write_side1_failed_history [2019-09-20 19:44:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2019-09-20 19:44:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure write_side2_failed_history [2019-09-20 19:44:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2019-09-20 19:44:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure write_active_side_history [2019-09-20 19:44:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2019-09-20 19:44:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure write_manual_selection_history [2019-09-20 19:44:02,007 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2019-09-20 19:44:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-20 19:44:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2019-09-20 19:44:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure Console_task_each_pals_period [2019-09-20 19:44:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure Side1_activestandby_task_each_pals_period [2019-09-20 19:44:02,008 INFO L130 BoogieDeclarations]: Found specification of procedure Side2_activestandby_task_each_pals_period [2019-09-20 19:44:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure Pendulum_prism_task_each_pals_period [2019-09-20 19:44:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-20 19:44:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 19:44:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 19:44:02,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 19:44:03,163 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 19:44:03,163 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 19:44:03,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:44:03 BoogieIcfgContainer [2019-09-20 19:44:03,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 19:44:03,182 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-09-20 19:44:03,182 INFO L271 PluginConnector]: Initializing Sifa... [2019-09-20 19:44:03,183 INFO L275 PluginConnector]: Sifa initialized [2019-09-20 19:44:03,184 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:44:03" (1/1) ... [2019-09-20 19:44:03,185 INFO L79 SifaObserver]: Intern domains=ExplicitValueDomain;IntervalDomain ♦ Abstract Domain=ExplicitValueDomain ♦ Abstract when formula's dag size exceeds (negative numbers disable this limit)=-1 ♦ Fluid=SizeLimitFluid ♦ Max. Parallel Explicit Values=2 ♦ Max. Parallel Intervals=2 ♦ Loop Summarizer=FixpointLoopSummarizer ♦ Abstract when formula has more disjuncts than (negative numbers disable this limit)=8 ♦ Call Summarizer=TopInputCallSummarizer ♦ Xnf Conversion Technique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION ♦ Simplification Technique=SIMPLIFY_DDA ♦ Intern Fluid=SizeLimitFluid [2019-09-20 19:44:03,226 INFO L162 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-09-20 19:44:03,226 INFO L169 IcfgInterpreter]: Building call graph [2019-09-20 19:44:03,245 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-09-20 19:44:03,256 INFO L179 IcfgInterpreter]: Starting interpretation [2019-09-20 19:44:03,257 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-09-20 19:44:03,604 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2019-09-20 19:44:03,758 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2019-09-20 19:44:03,957 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2019-09-20 19:44:04,223 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2019-09-20 19:44:04,425 WARN L191 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2019-09-20 19:44:04,603 WARN L191 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2019-09-20 19:44:04,803 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2019-09-20 19:44:05,007 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-09-20 19:44:05,187 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-09-20 19:44:05,348 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2019-09-20 19:44:05,365 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 178 for LOIs [2019-09-20 19:44:05,910 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2019-09-20 19:44:07,594 WARN L191 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2019-09-20 19:44:07,765 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2019-09-20 19:44:07,913 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2019-09-20 19:44:08,066 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2019-09-20 19:44:08,296 WARN L191 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2019-09-20 19:44:08,468 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2019-09-20 19:44:09,769 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2019-09-20 19:44:09,948 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2019-09-20 19:44:10,127 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2019-09-20 19:44:10,278 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2019-09-20 19:44:10,544 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2019-09-20 19:44:10,730 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2019-09-20 19:44:12,320 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2019-09-20 19:44:12,474 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2019-09-20 19:44:13,158 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2019-09-20 19:44:13,330 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2019-09-20 19:44:13,521 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2019-09-20 19:44:13,699 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2019-09-20 19:44:13,883 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2019-09-20 19:44:14,023 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2019-09-20 19:44:14,173 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2019-09-20 19:44:14,343 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2019-09-20 19:44:15,058 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2019-09-20 19:44:15,244 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2019-09-20 19:44:15,945 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2019-09-20 19:44:16,127 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2019-09-20 19:44:16,348 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2019-09-20 19:44:16,592 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2019-09-20 19:44:16,821 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2019-09-20 19:44:17,198 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2019-09-20 19:44:17,396 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2019-09-20 19:44:17,576 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2019-09-20 19:44:17,702 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2019-09-20 19:44:18,380 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2019-09-20 19:44:18,545 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2019-09-20 19:44:18,746 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2019-09-20 19:44:18,887 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2019-09-20 19:44:19,597 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2019-09-20 19:44:19,766 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2019-09-20 19:44:19,961 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2019-09-20 19:44:20,096 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2019-09-20 19:44:20,606 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2019-09-20 19:44:20,776 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2019-09-20 19:44:20,975 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2019-09-20 19:44:21,555 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2019-09-20 19:44:21,721 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2019-09-20 19:44:21,907 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2019-09-20 19:44:22,047 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2019-09-20 19:44:22,537 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2019-09-20 19:44:22,720 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2019-09-20 19:44:22,915 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2019-09-20 19:44:23,105 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2019-09-20 19:44:23,454 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2019-09-20 19:44:23,652 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2019-09-20 19:44:23,793 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2019-09-20 19:44:25,442 WARN L191 SmtUtils]: Spent 789.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 180 [2019-09-20 19:44:25,810 WARN L191 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2019-09-20 19:44:26,632 WARN L191 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 180 [2019-09-20 19:44:27,007 WARN L191 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2019-09-20 19:44:27,108 INFO L199 IcfgInterpreter]: Interpreting procedure check with input of size 18 for LOIs [2019-09-20 19:44:27,381 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-09-20 19:44:27,486 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2019-09-20 19:44:27,713 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-09-20 19:44:27,826 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2019-09-20 19:44:28,071 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-09-20 19:44:28,175 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2019-09-20 19:44:28,428 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-09-20 19:44:28,536 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2019-09-20 19:44:28,773 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-09-20 19:44:28,878 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2019-09-20 19:44:29,115 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-09-20 19:44:29,224 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2019-09-20 19:44:29,456 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-09-20 19:44:29,565 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2019-09-20 19:44:29,808 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-09-20 19:44:29,917 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2019-09-20 19:44:30,161 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-09-20 19:44:30,265 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2019-09-20 19:44:30,504 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-09-20 19:44:30,610 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2019-09-20 19:44:30,833 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-09-20 19:44:30,937 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2019-09-20 19:44:31,200 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-20 19:44:31,469 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-20 19:44:31,751 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-20 19:44:32,028 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-20 19:44:32,302 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-20 19:44:32,578 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-20 19:44:32,867 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-20 19:44:33,139 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-20 19:44:33,412 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-20 19:44:33,688 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-20 19:44:33,958 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-09-20 19:44:34,154 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2019-09-20 19:44:34,838 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:35,024 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:35,219 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:35,418 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:35,607 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:35,795 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:35,980 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:36,167 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:36,353 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:36,543 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:36,732 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:36,919 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:37,113 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:37,299 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:37,490 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:37,682 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:37,875 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:38,085 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:38,276 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:38,467 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:38,655 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:38,843 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:39,026 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:39,213 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:39,398 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:39,589 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:39,772 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:39,959 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:40,148 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2019-09-20 19:44:40,366 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2019-09-20 19:44:40,596 WARN L191 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2019-09-20 19:44:40,896 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2019-09-20 19:44:41,230 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-09-20 19:44:41,437 WARN L191 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2019-09-20 19:44:41,738 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2019-09-20 19:44:42,008 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2019-09-20 19:44:42,282 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2019-09-20 19:44:42,560 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2019-09-20 19:44:42,831 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2019-09-20 19:44:43,100 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47