java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/email_spec3_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 14:52:19,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 14:52:19,432 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 14:52:19,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 14:52:19,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 14:52:19,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 14:52:19,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 14:52:19,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 14:52:19,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 14:52:19,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 14:52:19,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 14:52:19,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 14:52:19,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 14:52:19,483 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 14:52:19,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 14:52:19,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 14:52:19,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 14:52:19,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 14:52:19,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 14:52:19,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 14:52:19,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 14:52:19,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 14:52:19,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 14:52:19,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 14:52:19,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 14:52:19,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 14:52:19,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 14:52:19,514 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 14:52:19,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 14:52:19,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 14:52:19,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 14:52:19,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 14:52:19,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 14:52:19,520 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 14:52:19,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 14:52:19,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 14:52:19,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 14:52:19,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 14:52:19,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 14:52:19,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 14:52:19,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 14:52:19,526 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 [2019-10-07 14:52:19,558 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 14:52:19,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 14:52:19,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 14:52:19,562 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 14:52:19,562 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 14:52:19,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 14:52:19,563 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 14:52:19,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 14:52:19,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 14:52:19,565 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 14:52:19,565 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 14:52:19,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 14:52:19,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 14:52:19,567 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 14:52:19,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 14:52:19,567 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 14:52:19,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 14:52:19,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 14:52:19,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 14:52:19,568 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 14:52:19,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 14:52:19,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:52:19,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 14:52:19,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 14:52:19,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 14:52:19,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 14:52:19,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 14:52:19,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 14:52:19,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock 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: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 14:52:19,850 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 14:52:19,863 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 14:52:19,866 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 14:52:19,868 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 14:52:19,868 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 14:52:19,869 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product18.cil.c [2019-10-07 14:52:19,947 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2dab8d46/bd1d71280cfc483e91e9eb52b2720d19/FLAG81b8a90f6 [2019-10-07 14:52:20,647 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 14:52:20,647 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product18.cil.c [2019-10-07 14:52:20,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2dab8d46/bd1d71280cfc483e91e9eb52b2720d19/FLAG81b8a90f6 [2019-10-07 14:52:20,832 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2dab8d46/bd1d71280cfc483e91e9eb52b2720d19 [2019-10-07 14:52:20,843 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 14:52:20,844 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 14:52:20,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 14:52:20,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 14:52:20,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 14:52:20,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:52:20" (1/1) ... [2019-10-07 14:52:20,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112cb494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:20, skipping insertion in model container [2019-10-07 14:52:20,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:52:20" (1/1) ... [2019-10-07 14:52:20,862 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 14:52:20,974 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 14:52:21,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:52:21,751 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 14:52:21,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:52:21,995 INFO L192 MainTranslator]: Completed translation [2019-10-07 14:52:21,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:21 WrapperNode [2019-10-07 14:52:21,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 14:52:21,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 14:52:21,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 14:52:21,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 14:52:22,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:21" (1/1) ... [2019-10-07 14:52:22,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:21" (1/1) ... [2019-10-07 14:52:22,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:21" (1/1) ... [2019-10-07 14:52:22,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:21" (1/1) ... [2019-10-07 14:52:22,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:21" (1/1) ... [2019-10-07 14:52:22,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:21" (1/1) ... [2019-10-07 14:52:22,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:21" (1/1) ... [2019-10-07 14:52:22,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 14:52:22,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 14:52:22,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 14:52:22,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 14:52:22,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:21" (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 [2019-10-07 14:52:22,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 14:52:22,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 14:52:22,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 14:52:22,285 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 14:52:22,285 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 14:52:22,287 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 14:52:22,287 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 14:52:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-07 14:52:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-07 14:52:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-07 14:52:22,288 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-07 14:52:22,290 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-07 14:52:22,290 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-07 14:52:22,290 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-07 14:52:22,290 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-07 14:52:22,291 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-07 14:52:22,293 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-07 14:52:22,294 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-07 14:52:22,294 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-07 14:52:22,294 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-07 14:52:22,294 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-07 14:52:22,295 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-07 14:52:22,295 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-07 14:52:22,296 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-07 14:52:22,296 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-07 14:52:22,296 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-07 14:52:22,296 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-07 14:52:22,296 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-07 14:52:22,297 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-07 14:52:22,297 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-07 14:52:22,297 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-07 14:52:22,297 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-07 14:52:22,298 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-07 14:52:22,298 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-07 14:52:22,298 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-07 14:52:22,298 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-07 14:52:22,299 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-07 14:52:22,299 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-07 14:52:22,299 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-07 14:52:22,299 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-07 14:52:22,299 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-07 14:52:22,299 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-07 14:52:22,300 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-07 14:52:22,300 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-07 14:52:22,300 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 14:52:22,300 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 14:52:22,300 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-07 14:52:22,301 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-07 14:52:22,301 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-07 14:52:22,301 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-07 14:52:22,301 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-07 14:52:22,301 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-07 14:52:22,301 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-07 14:52:22,302 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-07 14:52:22,302 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-07 14:52:22,302 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-07 14:52:22,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 14:52:22,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 14:52:22,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 14:52:22,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 14:52:22,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 14:52:22,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 14:52:22,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 14:52:22,304 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-07 14:52:22,305 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-07 14:52:22,305 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-07 14:52:22,305 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-07 14:52:22,305 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-10-07 14:52:22,305 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-07 14:52:22,306 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-07 14:52:22,306 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-07 14:52:22,306 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-07 14:52:22,306 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-07 14:52:22,307 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-07 14:52:22,308 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-07 14:52:22,308 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-07 14:52:22,309 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-07 14:52:22,309 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-07 14:52:22,309 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-07 14:52:22,309 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-07 14:52:22,309 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-07 14:52:22,311 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-07 14:52:22,311 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-07 14:52:22,311 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-07 14:52:22,311 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-07 14:52:22,312 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-07 14:52:22,312 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-07 14:52:22,313 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-07 14:52:22,313 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-07 14:52:22,313 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-07 14:52:22,314 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-07 14:52:22,314 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-07 14:52:22,314 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-07 14:52:22,314 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-07 14:52:22,314 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-07 14:52:22,315 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-07 14:52:22,315 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-07 14:52:22,315 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-07 14:52:22,315 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-07 14:52:22,315 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-07 14:52:22,316 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-07 14:52:22,316 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-07 14:52:22,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-10-07 14:52:22,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-10-07 14:52:22,316 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 14:52:22,316 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-07 14:52:22,317 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-07 14:52:22,317 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-07 14:52:22,317 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-07 14:52:22,317 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-07 14:52:22,317 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-07 14:52:22,318 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-07 14:52:22,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 14:52:22,318 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 14:52:22,318 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 14:52:22,319 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 14:52:22,319 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 14:52:22,320 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 14:52:22,320 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-07 14:52:22,320 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-07 14:52:22,321 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-07 14:52:22,321 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-07 14:52:22,321 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-07 14:52:22,321 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-07 14:52:22,323 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-07 14:52:22,323 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-07 14:52:22,323 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-07 14:52:22,323 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-07 14:52:22,323 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-07 14:52:22,323 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-07 14:52:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-07 14:52:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-07 14:52:22,324 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-07 14:52:22,325 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-07 14:52:22,329 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-07 14:52:22,329 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-07 14:52:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-07 14:52:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-07 14:52:22,330 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-07 14:52:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-07 14:52:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-07 14:52:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-07 14:52:22,331 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-07 14:52:22,332 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-07 14:52:22,340 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-07 14:52:22,340 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-07 14:52:22,340 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-07 14:52:22,340 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 14:52:22,340 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-07 14:52:22,341 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-07 14:52:22,341 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-07 14:52:22,341 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-07 14:52:22,341 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-07 14:52:22,341 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-07 14:52:22,341 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-07 14:52:22,341 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-07 14:52:22,342 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-07 14:52:22,342 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-07 14:52:22,342 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-07 14:52:22,342 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-07 14:52:22,343 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 14:52:22,344 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 14:52:22,344 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 14:52:22,344 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-07 14:52:22,344 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-07 14:52:22,344 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-07 14:52:22,344 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-07 14:52:22,344 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-07 14:52:22,345 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-07 14:52:22,345 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-07 14:52:22,345 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-07 14:52:22,345 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-07 14:52:22,345 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-07 14:52:22,345 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-07 14:52:22,345 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-07 14:52:22,346 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-07 14:52:22,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 14:52:22,346 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 14:52:22,346 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 14:52:22,346 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 14:52:22,346 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 14:52:22,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 14:52:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 14:52:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 14:52:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 14:52:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 14:52:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 14:52:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 14:52:22,347 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 14:52:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 14:52:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 14:52:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 14:52:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 14:52:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 14:52:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-07 14:52:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-07 14:52:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-07 14:52:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-07 14:52:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-07 14:52:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-07 14:52:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-07 14:52:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-07 14:52:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-07 14:52:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-07 14:52:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-07 14:52:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-07 14:52:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-07 14:52:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-07 14:52:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-07 14:52:22,350 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-07 14:52:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-07 14:52:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-07 14:52:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-07 14:52:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-07 14:52:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-10-07 14:52:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-07 14:52:22,351 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-10-07 14:52:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-07 14:52:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-10-07 14:52:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-07 14:52:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-07 14:52:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-07 14:52:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-07 14:52:22,352 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-07 14:52:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-07 14:52:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-07 14:52:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-07 14:52:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-07 14:52:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-07 14:52:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-07 14:52:22,353 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-07 14:52:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-07 14:52:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-07 14:52:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-07 14:52:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-07 14:52:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-07 14:52:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 14:52:22,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 14:52:22,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 14:52:27,246 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 14:52:27,247 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-07 14:52:27,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:52:27 BoogieIcfgContainer [2019-10-07 14:52:27,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 14:52:27,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 14:52:27,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 14:52:27,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 14:52:27,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:52:20" (1/3) ... [2019-10-07 14:52:27,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ecb53ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:52:27, skipping insertion in model container [2019-10-07 14:52:27,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:52:21" (2/3) ... [2019-10-07 14:52:27,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ecb53ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:52:27, skipping insertion in model container [2019-10-07 14:52:27,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:52:27" (3/3) ... [2019-10-07 14:52:27,258 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product18.cil.c [2019-10-07 14:52:27,269 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 14:52:27,285 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 14:52:27,353 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 14:52:27,392 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 14:52:27,392 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 14:52:27,392 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 14:52:27,392 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 14:52:27,392 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 14:52:27,392 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 14:52:27,393 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 14:52:27,393 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 14:52:27,424 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states. [2019-10-07 14:52:27,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-07 14:52:27,441 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:52:27,443 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:52:27,445 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:52:27,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:52:27,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1083958016, now seen corresponding path program 1 times [2019-10-07 14:52:27,460 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:52:27,460 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:52:27,461 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:52:27,461 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:52:27,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:52:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:52:28,130 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 14:52:28,131 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:52:28,132 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:52:28,132 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 14:52:28,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 14:52:28,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 14:52:28,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 14:52:28,158 INFO L87 Difference]: Start difference. First operand 361 states. Second operand 2 states. [2019-10-07 14:52:28,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:52:28,274 INFO L93 Difference]: Finished difference Result 498 states and 589 transitions. [2019-10-07 14:52:28,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 14:52:28,276 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 134 [2019-10-07 14:52:28,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:52:28,314 INFO L225 Difference]: With dead ends: 498 [2019-10-07 14:52:28,314 INFO L226 Difference]: Without dead ends: 324 [2019-10-07 14:52:28,325 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 14:52:28,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2019-10-07 14:52:28,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2019-10-07 14:52:28,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2019-10-07 14:52:28,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 381 transitions. [2019-10-07 14:52:28,439 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 381 transitions. Word has length 134 [2019-10-07 14:52:28,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:52:28,441 INFO L462 AbstractCegarLoop]: Abstraction has 324 states and 381 transitions. [2019-10-07 14:52:28,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 14:52:28,442 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 381 transitions. [2019-10-07 14:52:28,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-07 14:52:28,447 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:52:28,448 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:52:28,448 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:52:28,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:52:28,449 INFO L82 PathProgramCache]: Analyzing trace with hash 906778733, now seen corresponding path program 1 times [2019-10-07 14:52:28,449 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:52:28,449 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:52:28,449 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:52:28,449 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:52:28,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:52:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:52:28,743 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 14:52:28,743 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:52:28,744 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:52:28,744 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 14:52:28,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:52:28,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:52:28,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 14:52:28,747 INFO L87 Difference]: Start difference. First operand 324 states and 381 transitions. Second operand 3 states. [2019-10-07 14:52:28,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:52:28,816 INFO L93 Difference]: Finished difference Result 483 states and 557 transitions. [2019-10-07 14:52:28,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:52:28,818 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2019-10-07 14:52:28,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:52:28,824 INFO L225 Difference]: With dead ends: 483 [2019-10-07 14:52:28,824 INFO L226 Difference]: Without dead ends: 326 [2019-10-07 14:52:28,830 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 14:52:28,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2019-10-07 14:52:28,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2019-10-07 14:52:28,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2019-10-07 14:52:28,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 383 transitions. [2019-10-07 14:52:28,880 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 383 transitions. Word has length 135 [2019-10-07 14:52:28,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:52:28,881 INFO L462 AbstractCegarLoop]: Abstraction has 326 states and 383 transitions. [2019-10-07 14:52:28,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:52:28,881 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 383 transitions. [2019-10-07 14:52:28,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-07 14:52:28,885 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:52:28,885 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:52:28,886 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:52:28,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:52:28,886 INFO L82 PathProgramCache]: Analyzing trace with hash 2025946945, now seen corresponding path program 1 times [2019-10-07 14:52:28,886 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:52:28,887 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:52:28,887 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:52:28,887 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:52:28,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:52:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:52:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 14:52:29,236 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:52:29,236 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:52:29,236 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 14:52:29,239 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:52:29,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:52:29,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 14:52:29,240 INFO L87 Difference]: Start difference. First operand 326 states and 383 transitions. Second operand 3 states. [2019-10-07 14:52:29,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:52:29,290 INFO L93 Difference]: Finished difference Result 634 states and 773 transitions. [2019-10-07 14:52:29,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:52:29,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2019-10-07 14:52:29,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:52:29,297 INFO L225 Difference]: With dead ends: 634 [2019-10-07 14:52:29,297 INFO L226 Difference]: Without dead ends: 366 [2019-10-07 14:52:29,298 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 14:52:29,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2019-10-07 14:52:29,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 365. [2019-10-07 14:52:29,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2019-10-07 14:52:29,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 451 transitions. [2019-10-07 14:52:29,327 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 451 transitions. Word has length 144 [2019-10-07 14:52:29,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:52:29,328 INFO L462 AbstractCegarLoop]: Abstraction has 365 states and 451 transitions. [2019-10-07 14:52:29,329 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:52:29,329 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 451 transitions. [2019-10-07 14:52:29,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-07 14:52:29,335 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:52:29,336 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:52:29,336 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:52:29,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:52:29,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1474183208, now seen corresponding path program 1 times [2019-10-07 14:52:29,337 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:52:29,337 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:52:29,337 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:52:29,337 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:52:29,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:52:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:52:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 14:52:29,532 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:52:29,533 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:52:29,533 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 14:52:29,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:52:29,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:52:29,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 14:52:29,534 INFO L87 Difference]: Start difference. First operand 365 states and 451 transitions. Second operand 3 states. [2019-10-07 14:52:29,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:52:29,566 INFO L93 Difference]: Finished difference Result 748 states and 972 transitions. [2019-10-07 14:52:29,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:52:29,567 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 145 [2019-10-07 14:52:29,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:52:29,571 INFO L225 Difference]: With dead ends: 748 [2019-10-07 14:52:29,571 INFO L226 Difference]: Without dead ends: 441 [2019-10-07 14:52:29,573 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 14:52:29,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2019-10-07 14:52:29,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 440. [2019-10-07 14:52:29,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 440 states. [2019-10-07 14:52:29,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 581 transitions. [2019-10-07 14:52:29,599 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 581 transitions. Word has length 145 [2019-10-07 14:52:29,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:52:29,599 INFO L462 AbstractCegarLoop]: Abstraction has 440 states and 581 transitions. [2019-10-07 14:52:29,600 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:52:29,600 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 581 transitions. [2019-10-07 14:52:29,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-07 14:52:29,603 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:52:29,604 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:52:29,604 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:52:29,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:52:29,605 INFO L82 PathProgramCache]: Analyzing trace with hash 463865911, now seen corresponding path program 1 times [2019-10-07 14:52:29,605 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:52:29,605 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:52:29,605 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:52:29,605 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:52:29,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:52:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:52:30,463 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 14:52:30,463 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:52:30,464 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:52:30,464 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2019-10-07 14:52:30,465 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-07 14:52:30,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-07 14:52:30,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2019-10-07 14:52:30,467 INFO L87 Difference]: Start difference. First operand 440 states and 581 transitions. Second operand 23 states. [2019-10-07 14:52:40,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:52:40,579 INFO L93 Difference]: Finished difference Result 953 states and 1157 transitions. [2019-10-07 14:52:40,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-07 14:52:40,580 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 148 [2019-10-07 14:52:40,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:52:40,587 INFO L225 Difference]: With dead ends: 953 [2019-10-07 14:52:40,587 INFO L226 Difference]: Without dead ends: 735 [2019-10-07 14:52:40,590 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=351, Invalid=2405, Unknown=0, NotChecked=0, Total=2756 [2019-10-07 14:52:40,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2019-10-07 14:52:40,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 725. [2019-10-07 14:52:40,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 725 states. [2019-10-07 14:52:40,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 891 transitions. [2019-10-07 14:52:40,640 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 891 transitions. Word has length 148 [2019-10-07 14:52:40,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:52:40,641 INFO L462 AbstractCegarLoop]: Abstraction has 725 states and 891 transitions. [2019-10-07 14:52:40,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-07 14:52:40,642 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 891 transitions. [2019-10-07 14:52:40,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-07 14:52:40,645 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:52:40,645 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:52:40,646 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:52:40,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:52:40,646 INFO L82 PathProgramCache]: Analyzing trace with hash -920810668, now seen corresponding path program 1 times [2019-10-07 14:52:40,646 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:52:40,647 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:52:40,647 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:52:40,647 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:52:40,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:52:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:52:40,822 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 14:52:40,822 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:52:40,823 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:52:40,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:52:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:52:41,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 2578 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:52:41,560 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:52:41,640 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 14:52:41,641 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:52:41,874 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 14:52:41,875 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 14:52:41,906 INFO L162 IcfgInterpreter]: Started Sifa with 143 locations of interest [2019-10-07 14:52:41,907 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 14:52:41,914 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 14:52:41,922 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 14:52:41,923 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 14:53:37,500 WARN L191 SmtUtils]: Spent 483.00 ms on a formula simplification that was a NOOP. DAG size: 690 [2019-10-07 14:53:41,608 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 301 DAG size of output: 245 [2019-10-07 14:53:41,966 WARN L191 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 727 [2019-10-07 14:53:42,320 WARN L191 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 727 [2019-10-07 14:53:42,533 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 727 [2019-10-07 14:53:42,696 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 451 [2019-10-07 14:53:43,363 WARN L191 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 1026 [2019-10-07 14:53:44,143 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1026 [2019-10-07 14:53:44,789 WARN L191 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 1026 [2019-10-07 14:53:44,959 WARN L191 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 451 [2019-10-07 14:53:45,598 WARN L191 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 1026 [2019-10-07 14:53:46,808 WARN L191 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 1028 DAG size of output: 1026 [2019-10-07 14:53:47,450 WARN L191 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 1026 [2019-10-07 14:53:47,607 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 451 [2019-10-07 14:53:48,216 WARN L191 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 1026 [2019-10-07 14:53:48,863 WARN L191 SmtUtils]: Spent 643.00 ms on a formula simplification that was a NOOP. DAG size: 1026 [2019-10-07 14:53:49,499 WARN L191 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 1026 [2019-10-07 14:53:49,631 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 451 [2019-10-07 14:53:50,238 WARN L191 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 1026 [2019-10-07 14:53:50,268 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 562 for LOIs [2019-10-07 14:53:50,660 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 656 [2019-10-07 14:53:50,801 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 656 [2019-10-07 14:53:50,923 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 451 [2019-10-07 14:53:51,381 WARN L191 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 955 [2019-10-07 14:53:51,382 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1063 for LOIs [2019-10-07 14:53:51,989 WARN L191 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:53:52,577 WARN L191 SmtUtils]: Spent 584.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:53:52,777 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 14:53:53,679 WARN L191 SmtUtils]: Spent 901.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:53:54,287 WARN L191 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:53:54,903 WARN L191 SmtUtils]: Spent 612.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:53:55,104 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 14:53:55,952 WARN L191 SmtUtils]: Spent 846.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:53:56,600 WARN L191 SmtUtils]: Spent 614.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:53:57,196 WARN L191 SmtUtils]: Spent 591.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:53:57,402 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 14:53:58,265 WARN L191 SmtUtils]: Spent 861.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:53:59,399 WARN L191 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 1192 DAG size of output: 1063 [2019-10-07 14:53:59,986 WARN L191 SmtUtils]: Spent 583.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:54:00,482 WARN L191 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 575 [2019-10-07 14:54:01,316 WARN L191 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:01,909 WARN L191 SmtUtils]: Spent 578.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:54:02,513 WARN L191 SmtUtils]: Spent 601.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:54:02,705 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 14:54:03,545 WARN L191 SmtUtils]: Spent 838.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:04,149 WARN L191 SmtUtils]: Spent 601.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:54:04,734 WARN L191 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:54:04,926 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 14:54:05,790 WARN L191 SmtUtils]: Spent 862.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:06,377 WARN L191 SmtUtils]: Spent 584.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:54:06,962 WARN L191 SmtUtils]: Spent 581.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:54:07,159 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 14:54:07,992 WARN L191 SmtUtils]: Spent 830.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:08,603 WARN L191 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:54:09,197 WARN L191 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:54:09,398 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 14:54:10,224 WARN L191 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:10,807 WARN L191 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:54:11,386 WARN L191 SmtUtils]: Spent 576.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:54:11,581 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 14:54:12,427 WARN L191 SmtUtils]: Spent 843.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:13,020 WARN L191 SmtUtils]: Spent 591.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:54:13,616 WARN L191 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:54:13,811 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 14:54:14,663 WARN L191 SmtUtils]: Spent 850.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:15,248 WARN L191 SmtUtils]: Spent 581.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:54:15,841 WARN L191 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:54:16,033 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 14:54:16,849 WARN L191 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:17,434 WARN L191 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:54:18,009 WARN L191 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:54:18,203 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 14:54:19,050 WARN L191 SmtUtils]: Spent 846.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:19,637 WARN L191 SmtUtils]: Spent 583.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:54:20,221 WARN L191 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 1063 [2019-10-07 14:54:20,412 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 14:54:21,239 WARN L191 SmtUtils]: Spent 825.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:22,132 WARN L191 SmtUtils]: Spent 847.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:22,969 WARN L191 SmtUtils]: Spent 834.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:23,172 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 14:54:24,005 WARN L191 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:25,528 WARN L191 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 1192 DAG size of output: 1190 [2019-10-07 14:54:26,363 WARN L191 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:26,579 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 14:54:27,404 WARN L191 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:28,245 WARN L191 SmtUtils]: Spent 838.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:29,081 WARN L191 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:29,274 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 14:54:30,111 WARN L191 SmtUtils]: Spent 835.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:31,018 WARN L191 SmtUtils]: Spent 869.00 ms on a formula simplification that was a NOOP. DAG size: 1194 [2019-10-07 14:54:31,849 WARN L191 SmtUtils]: Spent 828.00 ms on a formula simplification that was a NOOP. DAG size: 1194 [2019-10-07 14:54:32,071 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 578 [2019-10-07 14:54:32,907 WARN L191 SmtUtils]: Spent 834.00 ms on a formula simplification that was a NOOP. DAG size: 1194 [2019-10-07 14:54:34,483 WARN L191 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 1196 DAG size of output: 1192 [2019-10-07 14:54:35,323 WARN L191 SmtUtils]: Spent 837.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 14:54:35,527 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 578 [2019-10-07 14:54:36,359 WARN L191 SmtUtils]: Spent 830.00 ms on a formula simplification that was a NOOP. DAG size: 1194 [2019-10-07 14:54:37,772 WARN L191 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 1196 DAG size of output: 1192 [2019-10-07 14:54:38,597 WARN L191 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 14:54:38,796 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 578 [2019-10-07 14:54:39,624 WARN L191 SmtUtils]: Spent 826.00 ms on a formula simplification that was a NOOP. DAG size: 1194 [2019-10-07 14:54:40,451 WARN L191 SmtUtils]: Spent 819.00 ms on a formula simplification that was a NOOP. DAG size: 1199 [2019-10-07 14:54:41,279 WARN L191 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 1199 [2019-10-07 14:54:41,489 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 578 [2019-10-07 14:54:42,314 WARN L191 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 1199 [2019-10-07 14:54:43,142 WARN L191 SmtUtils]: Spent 825.00 ms on a formula simplification that was a NOOP. DAG size: 1201 [2019-10-07 14:54:43,968 WARN L191 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 1201 [2019-10-07 14:54:44,166 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 578 [2019-10-07 14:54:44,993 WARN L191 SmtUtils]: Spent 825.00 ms on a formula simplification that was a NOOP. DAG size: 1201 [2019-10-07 14:54:47,501 WARN L191 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 1192 DAG size of output: 1190 [2019-10-07 14:54:48,337 WARN L191 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:48,595 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 14:54:49,432 WARN L191 SmtUtils]: Spent 835.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:51,833 WARN L191 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 1192 DAG size of output: 1190 [2019-10-07 14:54:52,646 WARN L191 SmtUtils]: Spent 809.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:52,853 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 14:54:53,686 WARN L191 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:54,524 WARN L191 SmtUtils]: Spent 835.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:55,357 WARN L191 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:55,551 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 14:54:56,377 WARN L191 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:57,897 WARN L191 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 1192 DAG size of output: 1190 [2019-10-07 14:54:58,727 WARN L191 SmtUtils]: Spent 826.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:54:58,929 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 14:54:59,762 WARN L191 SmtUtils]: Spent 830.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:55:01,248 WARN L191 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 1192 DAG size of output: 1190 [2019-10-07 14:55:02,091 WARN L191 SmtUtils]: Spent 840.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:55:02,291 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 14:55:03,124 WARN L191 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:55:03,947 WARN L191 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:55:04,775 WARN L191 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:55:04,977 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 14:55:05,810 WARN L191 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 1190 [2019-10-07 14:55:07,319 WARN L191 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 1196 DAG size of output: 1194 [2019-10-07 14:55:08,154 WARN L191 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 1194 [2019-10-07 14:55:08,362 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 578 [2019-10-07 14:55:09,200 WARN L191 SmtUtils]: Spent 836.00 ms on a formula simplification that was a NOOP. DAG size: 1194 [2019-10-07 14:55:10,700 WARN L191 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 1196 DAG size of output: 1192 [2019-10-07 14:55:11,526 WARN L191 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 14:55:11,729 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 578 [2019-10-07 14:55:12,550 WARN L191 SmtUtils]: Spent 819.00 ms on a formula simplification that was a NOOP. DAG size: 1194 [2019-10-07 14:55:13,942 WARN L191 SmtUtils]: Spent 1.39 s on a formula simplification. DAG size of input: 1196 DAG size of output: 1192 [2019-10-07 14:55:14,765 WARN L191 SmtUtils]: Spent 819.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 14:55:14,969 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 578 [2019-10-07 14:55:15,808 WARN L191 SmtUtils]: Spent 837.00 ms on a formula simplification that was a NOOP. DAG size: 1194 [2019-10-07 14:55:17,053 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1201 DAG size of output: 1192 [2019-10-07 14:55:17,895 WARN L191 SmtUtils]: Spent 839.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 14:55:18,096 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 578 [2019-10-07 14:55:18,938 WARN L191 SmtUtils]: Spent 839.00 ms on a formula simplification that was a NOOP. DAG size: 1194 [2019-10-07 14:55:20,280 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1203 DAG size of output: 1194 [2019-10-07 14:55:21,115 WARN L191 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 1194 [2019-10-07 14:55:21,342 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 578 [2019-10-07 14:55:22,173 WARN L191 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 1196 [2019-10-07 14:55:22,444 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:55:22,445 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 14:55:22,453 INFO L168 Benchmark]: Toolchain (without parser) took 181608.93 ms. Allocated memory was 138.9 MB in the beginning and 612.4 MB in the end (delta: 473.4 MB). Free memory was 100.0 MB in the beginning and 168.5 MB in the end (delta: -68.5 MB). Peak memory consumption was 404.9 MB. Max. memory is 7.1 GB. [2019-10-07 14:55:22,454 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-07 14:55:22,454 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1150.98 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 99.6 MB in the beginning and 139.9 MB in the end (delta: -40.4 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2019-10-07 14:55:22,455 INFO L168 Benchmark]: Boogie Preprocessor took 209.86 ms. Allocated memory is still 203.4 MB. Free memory was 139.9 MB in the beginning and 131.1 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. [2019-10-07 14:55:22,459 INFO L168 Benchmark]: RCFGBuilder took 5042.22 ms. Allocated memory was 203.4 MB in the beginning and 291.5 MB in the end (delta: 88.1 MB). Free memory was 131.1 MB in the beginning and 84.1 MB in the end (delta: 47.0 MB). Peak memory consumption was 135.1 MB. Max. memory is 7.1 GB. [2019-10-07 14:55:22,460 INFO L168 Benchmark]: TraceAbstraction took 175200.98 ms. Allocated memory was 291.5 MB in the beginning and 612.4 MB in the end (delta: 320.9 MB). Free memory was 84.1 MB in the beginning and 168.5 MB in the end (delta: -84.3 MB). Peak memory consumption was 236.5 MB. Max. memory is 7.1 GB. [2019-10-07 14:55:22,467 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1150.98 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 99.6 MB in the beginning and 139.9 MB in the end (delta: -40.4 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 209.86 ms. Allocated memory is still 203.4 MB. Free memory was 139.9 MB in the beginning and 131.1 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5042.22 ms. Allocated memory was 203.4 MB in the beginning and 291.5 MB in the end (delta: 88.1 MB). Free memory was 131.1 MB in the beginning and 84.1 MB in the end (delta: 47.0 MB). Peak memory consumption was 135.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 175200.98 ms. Allocated memory was 291.5 MB in the beginning and 612.4 MB in the end (delta: 320.9 MB). Free memory was 84.1 MB in the beginning and 168.5 MB in the end (delta: -84.3 MB). Peak memory consumption was 236.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...