/usr/bin/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_spec7_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:24:37,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:24:37,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:24:37,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:24:37,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:24:37,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:24:37,848 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:24:37,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:24:37,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:24:37,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:24:37,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:24:37,861 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:24:37,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:24:37,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:24:37,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:24:37,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:24:37,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:24:37,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:24:37,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:24:37,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:24:37,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:24:37,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:24:37,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:24:37,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:24:37,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:24:37,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:24:37,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:24:37,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:24:37,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:24:37,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:24:37,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:24:37,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:24:37,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:24:37,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:24:37,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:24:37,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:24:37,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:24:37,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:24:37,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:24:37,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:24:37,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:24:37,908 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 [2019-11-07 04:24:37,927 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:24:37,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:24:37,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:24:37,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:24:37,930 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:24:37,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:24:37,930 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:24:37,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:24:37,930 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:24:37,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:24:37,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:24:37,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:24:37,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:24:37,932 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:24:37,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:24:37,933 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:24:37,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:24:37,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:24:37,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:24:37,934 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:24:37,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:24:37,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:24:37,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:24:37,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:24:37,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:24:37,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:24:37,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:24:37,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:24:37,935 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 [2019-11-07 04:24:38,256 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:24:38,272 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:24:38,276 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:24:38,278 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:24:38,279 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:24:38,280 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec7_product30.cil.c [2019-11-07 04:24:38,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6419e0aad/997949592dd241e28c0f193ff507b162/FLAG3684bb7e4 [2019-11-07 04:24:39,001 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:24:39,001 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product30.cil.c [2019-11-07 04:24:39,024 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6419e0aad/997949592dd241e28c0f193ff507b162/FLAG3684bb7e4 [2019-11-07 04:24:39,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6419e0aad/997949592dd241e28c0f193ff507b162 [2019-11-07 04:24:39,182 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:24:39,184 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:24:39,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:24:39,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:24:39,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:24:39,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:24:39" (1/1) ... [2019-11-07 04:24:39,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@227d4ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:24:39, skipping insertion in model container [2019-11-07 04:24:39,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:24:39" (1/1) ... [2019-11-07 04:24:39,202 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:24:39,287 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:24:40,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:24:40,119 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:24:40,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:24:40,331 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:24:40,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:24:40 WrapperNode [2019-11-07 04:24:40,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:24:40,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:24:40,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:24:40,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:24:40,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:24:40" (1/1) ... [2019-11-07 04:24:40,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:24:40" (1/1) ... [2019-11-07 04:24:40,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:24:40" (1/1) ... [2019-11-07 04:24:40,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:24:40" (1/1) ... [2019-11-07 04:24:40,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:24:40" (1/1) ... [2019-11-07 04:24:40,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:24:40" (1/1) ... [2019-11-07 04:24:40,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:24:40" (1/1) ... [2019-11-07 04:24:40,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:24:40,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:24:40,522 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:24:40,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:24:40,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:24:40" (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 [2019-11-07 04:24:40,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:24:40,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:24:40,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:24:40,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:24:40,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:24:40,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:24:40,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:24:40,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:24:40,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:24:40,617 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:24:40,617 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 04:24:40,617 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 04:24:40,618 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 04:24:40,618 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 04:24:40,618 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 04:24:40,618 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 04:24:40,618 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 04:24:40,619 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 04:24:40,619 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 04:24:40,619 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 04:24:40,620 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 04:24:40,620 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 04:24:40,620 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 04:24:40,621 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 04:24:40,621 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 04:24:40,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 04:24:40,621 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 04:24:40,621 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 04:24:40,621 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 04:24:40,621 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 04:24:40,622 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 04:24:40,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptVerify_spec__1 [2019-11-07 04:24:40,622 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 04:24:40,622 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 04:24:40,622 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 04:24:40,622 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 04:24:40,623 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 04:24:40,623 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 04:24:40,623 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 04:24:40,623 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 04:24:40,623 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 04:24:40,623 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 04:24:40,623 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 04:24:40,624 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 04:24:40,624 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 04:24:40,624 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 04:24:40,624 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 04:24:40,624 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 04:24:40,624 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 04:24:40,624 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 04:24:40,625 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 04:24:40,625 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 04:24:40,625 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 04:24:40,625 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 04:24:40,625 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 04:24:40,625 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 04:24:40,625 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 04:24:40,626 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 04:24:40,626 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 04:24:40,626 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 04:24:40,626 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 04:24:40,626 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 04:24:40,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:24:40,627 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:24:40,627 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:24:40,627 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:24:40,627 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:24:40,627 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 04:24:40,627 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 04:24:40,628 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 04:24:40,628 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 04:24:40,628 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 04:24:40,628 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 04:24:40,628 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 04:24:40,628 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 04:24:40,628 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 04:24:40,629 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 04:24:40,629 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 04:24:40,629 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 04:24:40,629 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 04:24:40,629 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 04:24:40,629 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 04:24:40,630 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 04:24:40,630 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 04:24:40,630 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 04:24:40,630 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 04:24:40,630 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 04:24:40,630 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 04:24:40,631 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-11-07 04:24:40,631 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-11-07 04:24:40,631 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 04:24:40,631 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 04:24:40,631 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 04:24:40,631 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 04:24:40,631 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 04:24:40,632 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 04:24:40,632 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 04:24:40,632 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 04:24:40,632 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 04:24:40,632 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 04:24:40,632 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 04:24:40,633 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 04:24:40,633 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 04:24:40,633 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:24:40,633 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:24:40,633 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 04:24:40,633 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 04:24:40,633 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 04:24:40,634 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 04:24:40,634 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 04:24:40,634 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 04:24:40,634 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 04:24:40,634 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 04:24:40,634 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 04:24:40,634 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 04:24:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:24:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:24:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:24:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:24:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:24:40,635 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:24:40,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:24:40,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:24:40,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:24:40,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:24:40,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:24:40,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:24:40,637 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:24:40,637 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:24:40,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:24:40,637 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:24:40,637 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:24:40,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:24:40,637 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:24:40,638 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 04:24:40,638 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 04:24:40,638 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 04:24:40,638 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 04:24:40,638 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 04:24:40,638 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 04:24:40,639 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 04:24:40,639 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 04:24:40,639 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 04:24:40,639 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:24:40,639 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 04:24:40,639 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 04:24:40,639 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 04:24:40,640 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 04:24:40,640 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 04:24:40,640 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 04:24:40,640 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 04:24:40,640 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 04:24:40,640 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 04:24:40,640 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 04:24:40,640 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 04:24:40,641 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 04:24:40,641 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 04:24:40,641 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 04:24:40,641 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 04:24:40,641 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 04:24:40,641 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 04:24:40,641 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 04:24:40,642 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 04:24:40,642 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 04:24:40,642 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 04:24:40,642 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:24:40,642 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 04:24:40,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptVerify_spec__1 [2019-11-07 04:24:40,642 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:24:40,643 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 04:24:40,643 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 04:24:40,643 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 04:24:40,643 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 04:24:40,643 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 04:24:40,643 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 04:24:40,643 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 04:24:40,644 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 04:24:40,644 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 04:24:40,644 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 04:24:40,644 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 04:24:40,644 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 04:24:40,644 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 04:24:40,644 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 04:24:40,645 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 04:24:40,645 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 04:24:40,645 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 04:24:40,645 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 04:24:40,645 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 04:24:40,645 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 04:24:40,645 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 04:24:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 04:24:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 04:24:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 04:24:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 04:24:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 04:24:40,646 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 04:24:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 04:24:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 04:24:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 04:24:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:24:40,647 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:24:40,648 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:24:40,648 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:24:40,648 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 04:24:40,648 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 04:24:40,648 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 04:24:40,648 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 04:24:40,649 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 04:24:40,649 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 04:24:40,649 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 04:24:40,649 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 04:24:40,649 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 04:24:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 04:24:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 04:24:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 04:24:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 04:24:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 04:24:40,650 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 04:24:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 04:24:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 04:24:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 04:24:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 04:24:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 04:24:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 04:24:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 04:24:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 04:24:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 04:24:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 04:24:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-11-07 04:24:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-11-07 04:24:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 04:24:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 04:24:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 04:24:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 04:24:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 04:24:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:24:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:24:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 04:24:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 04:24:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 04:24:40,654 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 04:24:40,655 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 04:24:40,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:24:40,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:24:40,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:24:45,327 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:24:45,328 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 04:24:45,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:24:45 BoogieIcfgContainer [2019-11-07 04:24:45,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:24:45,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:24:45,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:24:45,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:24:45,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:24:39" (1/3) ... [2019-11-07 04:24:45,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b41b6a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:24:45, skipping insertion in model container [2019-11-07 04:24:45,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:24:40" (2/3) ... [2019-11-07 04:24:45,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b41b6a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:24:45, skipping insertion in model container [2019-11-07 04:24:45,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:24:45" (3/3) ... [2019-11-07 04:24:45,337 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec7_product30.cil.c [2019-11-07 04:24:45,347 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:24:45,356 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:24:45,367 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:24:45,396 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:24:45,397 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:24:45,397 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:24:45,397 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:24:45,397 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:24:45,397 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:24:45,397 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:24:45,398 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:24:45,426 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states. [2019-11-07 04:24:45,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-11-07 04:24:45,444 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:24:45,445 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 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] [2019-11-07 04:24:45,447 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:24:45,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:24:45,454 INFO L82 PathProgramCache]: Analyzing trace with hash -411168799, now seen corresponding path program 1 times [2019-11-07 04:24:45,464 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:24:45,464 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517967032] [2019-11-07 04:24:45,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:24:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:24:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 04:24:46,095 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517967032] [2019-11-07 04:24:46,096 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:24:46,097 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:24:46,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45970372] [2019-11-07 04:24:46,106 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:24:46,107 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:24:46,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:24:46,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:24:46,124 INFO L87 Difference]: Start difference. First operand 395 states. Second operand 2 states. [2019-11-07 04:24:46,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:24:46,227 INFO L93 Difference]: Finished difference Result 556 states and 659 transitions. [2019-11-07 04:24:46,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:24:46,230 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 145 [2019-11-07 04:24:46,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:24:46,265 INFO L225 Difference]: With dead ends: 556 [2019-11-07 04:24:46,265 INFO L226 Difference]: Without dead ends: 353 [2019-11-07 04:24:46,276 INFO L630 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 [2019-11-07 04:24:46,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2019-11-07 04:24:46,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2019-11-07 04:24:46,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 353 states. [2019-11-07 04:24:46,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 416 transitions. [2019-11-07 04:24:46,360 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 416 transitions. Word has length 145 [2019-11-07 04:24:46,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:24:46,363 INFO L462 AbstractCegarLoop]: Abstraction has 353 states and 416 transitions. [2019-11-07 04:24:46,364 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:24:46,364 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 416 transitions. [2019-11-07 04:24:46,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-11-07 04:24:46,379 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:24:46,379 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 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] [2019-11-07 04:24:46,379 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:24:46,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:24:46,381 INFO L82 PathProgramCache]: Analyzing trace with hash -2114721749, now seen corresponding path program 1 times [2019-11-07 04:24:46,381 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:24:46,382 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791942316] [2019-11-07 04:24:46,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:24:46,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:24:46,710 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 04:24:46,711 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791942316] [2019-11-07 04:24:46,711 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:24:46,711 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:24:46,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133716502] [2019-11-07 04:24:46,717 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:24:46,717 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:24:46,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:24:46,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:24:46,718 INFO L87 Difference]: Start difference. First operand 353 states and 416 transitions. Second operand 3 states. [2019-11-07 04:24:46,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:24:46,793 INFO L93 Difference]: Finished difference Result 541 states and 627 transitions. [2019-11-07 04:24:46,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:24:46,794 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2019-11-07 04:24:46,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:24:46,802 INFO L225 Difference]: With dead ends: 541 [2019-11-07 04:24:46,803 INFO L226 Difference]: Without dead ends: 355 [2019-11-07 04:24:46,806 INFO L630 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 [2019-11-07 04:24:46,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2019-11-07 04:24:46,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2019-11-07 04:24:46,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 355 states. [2019-11-07 04:24:46,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 418 transitions. [2019-11-07 04:24:46,844 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 418 transitions. Word has length 146 [2019-11-07 04:24:46,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:24:46,845 INFO L462 AbstractCegarLoop]: Abstraction has 355 states and 418 transitions. [2019-11-07 04:24:46,845 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:24:46,845 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 418 transitions. [2019-11-07 04:24:46,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-11-07 04:24:46,849 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:24:46,849 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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] [2019-11-07 04:24:46,849 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:24:46,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:24:46,850 INFO L82 PathProgramCache]: Analyzing trace with hash 386551375, now seen corresponding path program 1 times [2019-11-07 04:24:46,850 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:24:46,850 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634546302] [2019-11-07 04:24:46,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:24:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:24:47,115 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 04:24:47,116 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634546302] [2019-11-07 04:24:47,116 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:24:47,116 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:24:47,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074708048] [2019-11-07 04:24:47,117 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:24:47,117 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:24:47,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:24:47,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:24:47,118 INFO L87 Difference]: Start difference. First operand 355 states and 418 transitions. Second operand 3 states. [2019-11-07 04:24:47,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:24:47,179 INFO L93 Difference]: Finished difference Result 692 states and 843 transitions. [2019-11-07 04:24:47,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:24:47,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-11-07 04:24:47,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:24:47,186 INFO L225 Difference]: With dead ends: 692 [2019-11-07 04:24:47,187 INFO L226 Difference]: Without dead ends: 395 [2019-11-07 04:24:47,189 INFO L630 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 [2019-11-07 04:24:47,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2019-11-07 04:24:47,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 394. [2019-11-07 04:24:47,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2019-11-07 04:24:47,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 486 transitions. [2019-11-07 04:24:47,250 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 486 transitions. Word has length 155 [2019-11-07 04:24:47,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:24:47,252 INFO L462 AbstractCegarLoop]: Abstraction has 394 states and 486 transitions. [2019-11-07 04:24:47,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:24:47,252 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 486 transitions. [2019-11-07 04:24:47,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-11-07 04:24:47,265 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:24:47,266 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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] [2019-11-07 04:24:47,266 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:24:47,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:24:47,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1150213139, now seen corresponding path program 1 times [2019-11-07 04:24:47,268 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:24:47,268 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403227828] [2019-11-07 04:24:47,269 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:24:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:24:47,555 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 04:24:47,556 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403227828] [2019-11-07 04:24:47,556 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:24:47,557 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:24:47,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459352222] [2019-11-07 04:24:47,558 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:24:47,559 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:24:47,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:24:47,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:24:47,563 INFO L87 Difference]: Start difference. First operand 394 states and 486 transitions. Second operand 3 states. [2019-11-07 04:24:47,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:24:47,616 INFO L93 Difference]: Finished difference Result 806 states and 1042 transitions. [2019-11-07 04:24:47,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:24:47,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2019-11-07 04:24:47,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:24:47,625 INFO L225 Difference]: With dead ends: 806 [2019-11-07 04:24:47,625 INFO L226 Difference]: Without dead ends: 470 [2019-11-07 04:24:47,628 INFO L630 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 [2019-11-07 04:24:47,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2019-11-07 04:24:47,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 469. [2019-11-07 04:24:47,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2019-11-07 04:24:47,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 616 transitions. [2019-11-07 04:24:47,661 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 616 transitions. Word has length 156 [2019-11-07 04:24:47,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:24:47,663 INFO L462 AbstractCegarLoop]: Abstraction has 469 states and 616 transitions. [2019-11-07 04:24:47,663 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:24:47,663 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 616 transitions. [2019-11-07 04:24:47,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-11-07 04:24:47,666 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:24:47,667 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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] [2019-11-07 04:24:47,667 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:24:47,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:24:47,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1337878609, now seen corresponding path program 1 times [2019-11-07 04:24:47,668 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:24:47,669 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807821153] [2019-11-07 04:24:47,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:24:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:24:47,849 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 04:24:47,850 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807821153] [2019-11-07 04:24:47,850 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:24:47,850 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:24:47,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623793118] [2019-11-07 04:24:47,851 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:24:47,851 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:24:47,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:24:47,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:24:47,852 INFO L87 Difference]: Start difference. First operand 469 states and 616 transitions. Second operand 3 states. [2019-11-07 04:24:47,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:24:47,890 INFO L93 Difference]: Finished difference Result 1025 states and 1422 transitions. [2019-11-07 04:24:47,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:24:47,890 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2019-11-07 04:24:47,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:24:47,895 INFO L225 Difference]: With dead ends: 1025 [2019-11-07 04:24:47,895 INFO L226 Difference]: Without dead ends: 614 [2019-11-07 04:24:47,897 INFO L630 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 [2019-11-07 04:24:47,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2019-11-07 04:24:47,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 613. [2019-11-07 04:24:47,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2019-11-07 04:24:47,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 864 transitions. [2019-11-07 04:24:47,987 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 864 transitions. Word has length 157 [2019-11-07 04:24:47,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:24:47,988 INFO L462 AbstractCegarLoop]: Abstraction has 613 states and 864 transitions. [2019-11-07 04:24:47,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:24:47,988 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 864 transitions. [2019-11-07 04:24:47,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-11-07 04:24:47,992 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:24:47,992 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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, 1] [2019-11-07 04:24:47,993 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:24:47,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:24:47,993 INFO L82 PathProgramCache]: Analyzing trace with hash 497503347, now seen corresponding path program 1 times [2019-11-07 04:24:47,993 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:24:47,994 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827492381] [2019-11-07 04:24:47,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:24:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:24:48,740 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-07 04:24:48,740 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827492381] [2019-11-07 04:24:48,740 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:24:48,741 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2019-11-07 04:24:48,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015568750] [2019-11-07 04:24:48,741 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-11-07 04:24:48,742 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:24:48,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-11-07 04:24:48,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2019-11-07 04:24:48,743 INFO L87 Difference]: Start difference. First operand 613 states and 864 transitions. Second operand 28 states. [2019-11-07 04:24:57,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:24:57,018 INFO L93 Difference]: Finished difference Result 1041 states and 1381 transitions. [2019-11-07 04:24:57,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-11-07 04:24:57,018 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 159 [2019-11-07 04:24:57,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:24:57,026 INFO L225 Difference]: With dead ends: 1041 [2019-11-07 04:24:57,027 INFO L226 Difference]: Without dead ends: 833 [2019-11-07 04:24:57,029 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=170, Invalid=1900, Unknown=0, NotChecked=0, Total=2070 [2019-11-07 04:24:57,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2019-11-07 04:24:57,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 821. [2019-11-07 04:24:57,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2019-11-07 04:24:57,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1110 transitions. [2019-11-07 04:24:57,087 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1110 transitions. Word has length 159 [2019-11-07 04:24:57,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:24:57,088 INFO L462 AbstractCegarLoop]: Abstraction has 821 states and 1110 transitions. [2019-11-07 04:24:57,088 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-11-07 04:24:57,088 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1110 transitions. [2019-11-07 04:24:57,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-11-07 04:24:57,092 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:24:57,093 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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, 1, 1, 1, 1, 1] [2019-11-07 04:24:57,093 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:24:57,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:24:57,094 INFO L82 PathProgramCache]: Analyzing trace with hash 853579315, now seen corresponding path program 1 times [2019-11-07 04:24:57,094 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:24:57,094 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570952904] [2019-11-07 04:24:57,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:24:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:24:57,349 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-07 04:24:57,349 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570952904] [2019-11-07 04:24:57,349 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:24:57,350 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 04:24:57,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673812474] [2019-11-07 04:24:57,350 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 04:24:57,351 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:24:57,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 04:24:57,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:24:57,351 INFO L87 Difference]: Start difference. First operand 821 states and 1110 transitions. Second operand 10 states. [2019-11-07 04:24:57,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:24:57,444 INFO L93 Difference]: Finished difference Result 830 states and 1120 transitions. [2019-11-07 04:24:57,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 04:24:57,445 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 163 [2019-11-07 04:24:57,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:24:57,452 INFO L225 Difference]: With dead ends: 830 [2019-11-07 04:24:57,452 INFO L226 Difference]: Without dead ends: 825 [2019-11-07 04:24:57,453 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:24:57,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2019-11-07 04:24:57,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 825. [2019-11-07 04:24:57,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 825 states. [2019-11-07 04:24:57,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1113 transitions. [2019-11-07 04:24:57,506 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1113 transitions. Word has length 163 [2019-11-07 04:24:57,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:24:57,510 INFO L462 AbstractCegarLoop]: Abstraction has 825 states and 1113 transitions. [2019-11-07 04:24:57,511 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 04:24:57,511 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1113 transitions. [2019-11-07 04:24:57,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-11-07 04:24:57,517 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:24:57,518 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:24:57,518 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:24:57,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:24:57,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1264641729, now seen corresponding path program 1 times [2019-11-07 04:24:57,520 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:24:57,520 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134378257] [2019-11-07 04:24:57,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:24:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:24:58,204 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 04:24:58,205 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134378257] [2019-11-07 04:24:58,205 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691912854] [2019-11-07 04:24:58,205 INFO L94 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 [2019-11-07 04:24:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:24:58,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:24:58,866 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:24:58,988 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 04:24:58,988 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:24:59,270 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-11-07 04:24:59,270 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [352394012] [2019-11-07 04:24:59,302 INFO L159 IcfgInterpreter]: Started Sifa with 150 locations of interest [2019-11-07 04:24:59,302 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:24:59,310 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:24:59,316 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:24:59,317 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs