/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_spec4_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:21:45,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:21:45,774 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:21:45,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:21:45,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:21:45,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:21:45,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:21:45,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:21:45,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:21:45,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:21:45,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:21:45,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:21:45,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:21:45,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:21:45,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:21:45,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:21:45,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:21:45,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:21:45,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:21:45,828 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:21:45,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:21:45,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:21:45,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:21:45,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:21:45,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:21:45,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:21:45,840 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:21:45,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:21:45,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:21:45,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:21:45,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:21:45,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:21:45,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:21:45,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:21:45,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:21:45,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:21:45,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:21:45,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:21:45,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:21:45,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:21:45,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:21:45,851 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 04:21:45,887 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:21:45,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:21:45,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:21:45,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:21:45,889 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:21:45,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:21:45,889 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:21:45,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:21:45,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:21:45,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:21:45,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:21:45,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:21:45,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:21:45,891 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:21:45,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:21:45,892 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:21:45,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:21:45,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:21:45,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:21:45,892 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:21:45,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:21:45,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:21:45,893 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:21:45,893 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:21:45,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:21:45,893 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:21:45,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:21:45,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:21:45,896 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 04:21:46,184 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:21:46,206 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:21:46,209 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:21:46,211 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:21:46,211 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:21:46,212 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product25.cil.c [2019-11-07 04:21:46,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a37bc61e5/091ca6fbbaee4a0ab22ee822ab1d075d/FLAG4069dcb68 [2019-11-07 04:21:46,963 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:21:46,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product25.cil.c [2019-11-07 04:21:46,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a37bc61e5/091ca6fbbaee4a0ab22ee822ab1d075d/FLAG4069dcb68 [2019-11-07 04:21:47,115 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a37bc61e5/091ca6fbbaee4a0ab22ee822ab1d075d [2019-11-07 04:21:47,123 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:21:47,124 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:21:47,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:21:47,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:21:47,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:21:47,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:21:47" (1/1) ... [2019-11-07 04:21:47,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bfb97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:47, skipping insertion in model container [2019-11-07 04:21:47,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:21:47" (1/1) ... [2019-11-07 04:21:47,140 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:21:47,218 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:21:47,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:21:48,021 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:21:48,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:21:48,227 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:21:48,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:48 WrapperNode [2019-11-07 04:21:48,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:21:48,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:21:48,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:21:48,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:21:48,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:48" (1/1) ... [2019-11-07 04:21:48,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:48" (1/1) ... [2019-11-07 04:21:48,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:48" (1/1) ... [2019-11-07 04:21:48,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:48" (1/1) ... [2019-11-07 04:21:48,355 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:48" (1/1) ... [2019-11-07 04:21:48,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:48" (1/1) ... [2019-11-07 04:21:48,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:48" (1/1) ... [2019-11-07 04:21:48,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:21:48,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:21:48,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:21:48,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:21:48,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:48" (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 04:21:48,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:21:48,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:21:48,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:21:48,512 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 04:21:48,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:21:48,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:21:48,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:21:48,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:21:48,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:21:48,513 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:21:48,514 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-11-07 04:21:48,514 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-11-07 04:21:48,514 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 04:21:48,514 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 04:21:48,514 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 04:21:48,515 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 04:21:48,515 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 04:21:48,515 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 04:21:48,515 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-11-07 04:21:48,516 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 04:21:48,516 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 04:21:48,516 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 04:21:48,516 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 04:21:48,517 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 04:21:48,517 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 04:21:48,517 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 04:21:48,517 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 04:21:48,517 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 04:21:48,517 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 04:21:48,518 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 04:21:48,518 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 04:21:48,518 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 04:21:48,518 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 04:21:48,518 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 04:21:48,519 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 04:21:48,519 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 04:21:48,519 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 04:21:48,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 04:21:48,519 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 04:21:48,520 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 04:21:48,520 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 04:21:48,520 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 04:21:48,520 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 04:21:48,520 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 04:21:48,520 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 04:21:48,521 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 04:21:48,521 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 04:21:48,521 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 04:21:48,521 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 04:21:48,521 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 04:21:48,522 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 04:21:48,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 04:21:48,522 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 04:21:48,522 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 04:21:48,522 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 04:21:48,522 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 04:21:48,523 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 04:21:48,523 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 04:21:48,523 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 04:21:48,523 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 04:21:48,523 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 04:21:48,524 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 04:21:48,524 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 04:21:48,524 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 04:21:48,524 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 04:21:48,525 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:21:48,525 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:21:48,525 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 04:21:48,525 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 04:21:48,525 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 04:21:48,526 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 04:21:48,526 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 04:21:48,526 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 04:21:48,526 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 04:21:48,526 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 04:21:48,526 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 04:21:48,527 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 04:21:48,527 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 04:21:48,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-11-07 04:21:48,527 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:21:48,528 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:21:48,528 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:21:48,528 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:21:48,528 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:21:48,528 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 04:21:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 04:21:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 04:21:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 04:21:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 04:21:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 04:21:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 04:21:48,529 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 04:21:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 04:21:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 04:21:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 04:21:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 04:21:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 04:21:48,530 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 04:21:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 04:21:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 04:21:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 04:21:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 04:21:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 04:21:48,531 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 04:21:48,532 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 04:21:48,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 04:21:48,532 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 04:21:48,532 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 04:21:48,532 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 04:21:48,532 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 04:21:48,533 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 04:21:48,533 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 04:21:48,533 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 04:21:48,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:21:48,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:21:48,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:21:48,533 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:21:48,534 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 04:21:48,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:21:48,534 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:21:48,534 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:21:48,534 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:21:48,534 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:21:48,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:21:48,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:21:48,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:21:48,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:21:48,535 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:21:48,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:21:48,535 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:21:48,535 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:21:48,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:21:48,536 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:21:48,536 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:21:48,536 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:21:48,536 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 04:21:48,537 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 04:21:48,537 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 04:21:48,537 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 04:21:48,537 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 04:21:48,537 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 04:21:48,537 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 04:21:48,537 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 04:21:48,538 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 04:21:48,538 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 04:21:48,538 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 04:21:48,538 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 04:21:48,538 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-11-07 04:21:48,538 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-11-07 04:21:48,538 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 04:21:48,538 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 04:21:48,539 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 04:21:48,539 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 04:21:48,539 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 04:21:48,539 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 04:21:48,539 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 04:21:48,539 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 04:21:48,539 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 04:21:48,540 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 04:21:48,540 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 04:21:48,540 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 04:21:48,540 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 04:21:48,540 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 04:21:48,540 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 04:21:48,540 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 04:21:48,541 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 04:21:48,541 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 04:21:48,541 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 04:21:48,541 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 04:21:48,541 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 04:21:48,541 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 04:21:48,541 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 04:21:48,541 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 04:21:48,542 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 04:21:48,542 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 04:21:48,542 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 04:21:48,542 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 04:21:48,542 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-11-07 04:21:48,542 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 04:21:48,542 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-11-07 04:21:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 04:21:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 04:21:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 04:21:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 04:21:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 04:21:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 04:21:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 04:21:48,543 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 04:21:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 04:21:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 04:21:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 04:21:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 04:21:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 04:21:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 04:21:48,544 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 04:21:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 04:21:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 04:21:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 04:21:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 04:21:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 04:21:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 04:21:48,545 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 04:21:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:21:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:21:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:21:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 04:21:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 04:21:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 04:21:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 04:21:48,546 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 04:21:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:21:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:21:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:21:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 04:21:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 04:21:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 04:21:48,547 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 04:21:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 04:21:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 04:21:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 04:21:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 04:21:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 04:21:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 04:21:48,548 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 04:21:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 04:21:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 04:21:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 04:21:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:21:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:21:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 04:21:48,549 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 04:21:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 04:21:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 04:21:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 04:21:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 04:21:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 04:21:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 04:21:48,550 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 04:21:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 04:21:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 04:21:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:21:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:21:48,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:21:53,157 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:21:53,158 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 04:21:53,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:21:53 BoogieIcfgContainer [2019-11-07 04:21:53,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:21:53,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:21:53,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:21:53,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:21:53,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:21:47" (1/3) ... [2019-11-07 04:21:53,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4838e5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:21:53, skipping insertion in model container [2019-11-07 04:21:53,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:48" (2/3) ... [2019-11-07 04:21:53,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4838e5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:21:53, skipping insertion in model container [2019-11-07 04:21:53,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:21:53" (3/3) ... [2019-11-07 04:21:53,168 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product25.cil.c [2019-11-07 04:21:53,178 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:21:53,187 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:21:53,200 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:21:53,229 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:21:53,229 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:21:53,229 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:21:53,229 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:21:53,230 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:21:53,230 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:21:53,230 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:21:53,230 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:21:53,259 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states. [2019-11-07 04:21:53,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-11-07 04:21:53,276 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:21:53,278 INFO L410 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] [2019-11-07 04:21:53,280 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:21:53,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:21:53,286 INFO L82 PathProgramCache]: Analyzing trace with hash -460999766, now seen corresponding path program 1 times [2019-11-07 04:21:53,297 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:21:53,298 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503458066] [2019-11-07 04:21:53,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:21:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:21:53,954 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:21:53,955 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503458066] [2019-11-07 04:21:53,956 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:21:53,956 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:21:53,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972362991] [2019-11-07 04:21:53,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:21:53,963 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:21:53,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:21:53,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:21:53,981 INFO L87 Difference]: Start difference. First operand 404 states. Second operand 2 states. [2019-11-07 04:21:54,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:21:54,077 INFO L93 Difference]: Finished difference Result 590 states and 695 transitions. [2019-11-07 04:21:54,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:21:54,079 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 125 [2019-11-07 04:21:54,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:21:54,115 INFO L225 Difference]: With dead ends: 590 [2019-11-07 04:21:54,115 INFO L226 Difference]: Without dead ends: 377 [2019-11-07 04:21:54,125 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 04:21:54,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2019-11-07 04:21:54,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2019-11-07 04:21:54,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2019-11-07 04:21:54,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 442 transitions. [2019-11-07 04:21:54,217 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 442 transitions. Word has length 125 [2019-11-07 04:21:54,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:21:54,219 INFO L462 AbstractCegarLoop]: Abstraction has 377 states and 442 transitions. [2019-11-07 04:21:54,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:21:54,219 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 442 transitions. [2019-11-07 04:21:54,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-11-07 04:21:54,226 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:21:54,226 INFO L410 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] [2019-11-07 04:21:54,227 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:21:54,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:21:54,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1837542480, now seen corresponding path program 1 times [2019-11-07 04:21:54,227 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:21:54,228 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777756700] [2019-11-07 04:21:54,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:21:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:21:54,468 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:21:54,468 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777756700] [2019-11-07 04:21:54,469 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:21:54,469 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:21:54,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032757499] [2019-11-07 04:21:54,473 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:21:54,474 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:21:54,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:21:54,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:21:54,474 INFO L87 Difference]: Start difference. First operand 377 states and 442 transitions. Second operand 3 states. [2019-11-07 04:21:54,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:21:54,533 INFO L93 Difference]: Finished difference Result 575 states and 664 transitions. [2019-11-07 04:21:54,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:21:54,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2019-11-07 04:21:54,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:21:54,537 INFO L225 Difference]: With dead ends: 575 [2019-11-07 04:21:54,537 INFO L226 Difference]: Without dead ends: 379 [2019-11-07 04:21:54,539 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 04:21:54,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2019-11-07 04:21:54,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2019-11-07 04:21:54,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2019-11-07 04:21:54,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 444 transitions. [2019-11-07 04:21:54,582 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 444 transitions. Word has length 126 [2019-11-07 04:21:54,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:21:54,583 INFO L462 AbstractCegarLoop]: Abstraction has 379 states and 444 transitions. [2019-11-07 04:21:54,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:21:54,583 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 444 transitions. [2019-11-07 04:21:54,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-11-07 04:21:54,587 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:21:54,587 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] [2019-11-07 04:21:54,588 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:21:54,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:21:54,588 INFO L82 PathProgramCache]: Analyzing trace with hash -330836873, now seen corresponding path program 1 times [2019-11-07 04:21:54,588 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:21:54,589 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548705310] [2019-11-07 04:21:54,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:21:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:21:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-07 04:21:54,834 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548705310] [2019-11-07 04:21:54,834 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:21:54,834 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:21:54,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772460935] [2019-11-07 04:21:54,835 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:21:54,835 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:21:54,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:21:54,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:21:54,836 INFO L87 Difference]: Start difference. First operand 379 states and 444 transitions. Second operand 3 states. [2019-11-07 04:21:54,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:21:54,870 INFO L93 Difference]: Finished difference Result 742 states and 898 transitions. [2019-11-07 04:21:54,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:21:54,871 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2019-11-07 04:21:54,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:21:54,874 INFO L225 Difference]: With dead ends: 742 [2019-11-07 04:21:54,875 INFO L226 Difference]: Without dead ends: 421 [2019-11-07 04:21:54,876 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 04:21:54,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2019-11-07 04:21:54,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 420. [2019-11-07 04:21:54,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 420 states. [2019-11-07 04:21:54,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 515 transitions. [2019-11-07 04:21:54,908 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 515 transitions. Word has length 131 [2019-11-07 04:21:54,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:21:54,910 INFO L462 AbstractCegarLoop]: Abstraction has 420 states and 515 transitions. [2019-11-07 04:21:54,911 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:21:54,911 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 515 transitions. [2019-11-07 04:21:54,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-11-07 04:21:54,916 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:21:54,916 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] [2019-11-07 04:21:54,916 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:21:54,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:21:54,918 INFO L82 PathProgramCache]: Analyzing trace with hash 844763331, now seen corresponding path program 1 times [2019-11-07 04:21:54,918 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:21:54,918 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220011685] [2019-11-07 04:21:54,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:21:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:21:55,479 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 04:21:55,481 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220011685] [2019-11-07 04:21:55,483 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:21:55,484 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2019-11-07 04:21:55,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688989269] [2019-11-07 04:21:55,486 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-07 04:21:55,486 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:21:55,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-07 04:21:55,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2019-11-07 04:21:55,489 INFO L87 Difference]: Start difference. First operand 420 states and 515 transitions. Second operand 21 states. [2019-11-07 04:22:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:22:04,843 INFO L93 Difference]: Finished difference Result 838 states and 1000 transitions. [2019-11-07 04:22:04,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-07 04:22:04,844 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 132 [2019-11-07 04:22:04,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:22:04,854 INFO L225 Difference]: With dead ends: 838 [2019-11-07 04:22:04,854 INFO L226 Difference]: Without dead ends: 648 [2019-11-07 04:22:04,858 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=1527, Unknown=0, NotChecked=0, Total=1722 [2019-11-07 04:22:04,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2019-11-07 04:22:04,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 639. [2019-11-07 04:22:04,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 639 states. [2019-11-07 04:22:04,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 772 transitions. [2019-11-07 04:22:04,928 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 772 transitions. Word has length 132 [2019-11-07 04:22:04,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:22:04,929 INFO L462 AbstractCegarLoop]: Abstraction has 639 states and 772 transitions. [2019-11-07 04:22:04,929 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-07 04:22:04,929 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 772 transitions. [2019-11-07 04:22:04,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-11-07 04:22:04,938 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:22:04,938 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] [2019-11-07 04:22:04,938 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:22:04,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:22:04,939 INFO L82 PathProgramCache]: Analyzing trace with hash -995692034, now seen corresponding path program 1 times [2019-11-07 04:22:04,939 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:22:04,940 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796939193] [2019-11-07 04:22:04,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:22:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:05,544 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 04:22:05,545 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796939193] [2019-11-07 04:22:05,545 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:22:05,545 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2019-11-07 04:22:05,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036141596] [2019-11-07 04:22:05,546 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-07 04:22:05,547 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:22:05,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-07 04:22:05,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2019-11-07 04:22:05,548 INFO L87 Difference]: Start difference. First operand 639 states and 772 transitions. Second operand 23 states. [2019-11-07 04:22:08,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:22:08,278 INFO L93 Difference]: Finished difference Result 717 states and 858 transitions. [2019-11-07 04:22:08,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-11-07 04:22:08,278 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 138 [2019-11-07 04:22:08,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:22:08,289 INFO L225 Difference]: With dead ends: 717 [2019-11-07 04:22:08,289 INFO L226 Difference]: Without dead ends: 710 [2019-11-07 04:22:08,291 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=213, Invalid=1949, Unknown=0, NotChecked=0, Total=2162 [2019-11-07 04:22:08,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2019-11-07 04:22:08,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 703. [2019-11-07 04:22:08,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2019-11-07 04:22:08,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 843 transitions. [2019-11-07 04:22:08,348 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 843 transitions. Word has length 138 [2019-11-07 04:22:08,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:22:08,350 INFO L462 AbstractCegarLoop]: Abstraction has 703 states and 843 transitions. [2019-11-07 04:22:08,350 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-07 04:22:08,350 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 843 transitions. [2019-11-07 04:22:08,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-11-07 04:22:08,357 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:22:08,357 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:22:08,358 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:22:08,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:22:08,358 INFO L82 PathProgramCache]: Analyzing trace with hash 860631089, now seen corresponding path program 1 times [2019-11-07 04:22:08,358 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:22:08,359 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409073439] [2019-11-07 04:22:08,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:22:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:08,654 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 04:22:08,655 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409073439] [2019-11-07 04:22:08,655 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:22:08,655 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 04:22:08,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922934091] [2019-11-07 04:22:08,656 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 04:22:08,656 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:22:08,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 04:22:08,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:22:08,657 INFO L87 Difference]: Start difference. First operand 703 states and 843 transitions. Second operand 8 states. [2019-11-07 04:22:08,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:22:08,719 INFO L93 Difference]: Finished difference Result 1136 states and 1345 transitions. [2019-11-07 04:22:08,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 04:22:08,720 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 227 [2019-11-07 04:22:08,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:22:08,725 INFO L225 Difference]: With dead ends: 1136 [2019-11-07 04:22:08,725 INFO L226 Difference]: Without dead ends: 703 [2019-11-07 04:22:08,727 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 04:22:08,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2019-11-07 04:22:08,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 703. [2019-11-07 04:22:08,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2019-11-07 04:22:08,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 841 transitions. [2019-11-07 04:22:08,769 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 841 transitions. Word has length 227 [2019-11-07 04:22:08,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:22:08,772 INFO L462 AbstractCegarLoop]: Abstraction has 703 states and 841 transitions. [2019-11-07 04:22:08,773 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 04:22:08,773 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 841 transitions. [2019-11-07 04:22:08,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-11-07 04:22:08,778 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:22:08,778 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2019-11-07 04:22:08,778 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:22:08,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:22:08,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1698649821, now seen corresponding path program 1 times [2019-11-07 04:22:08,779 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:22:08,779 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357256074] [2019-11-07 04:22:08,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:22:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:09,122 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-11-07 04:22:09,123 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357256074] [2019-11-07 04:22:09,123 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:22:09,123 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-07 04:22:09,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128311299] [2019-11-07 04:22:09,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 04:22:09,124 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:22:09,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 04:22:09,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-11-07 04:22:09,125 INFO L87 Difference]: Start difference. First operand 703 states and 841 transitions. Second operand 11 states. [2019-11-07 04:22:12,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:22:12,067 INFO L93 Difference]: Finished difference Result 1371 states and 1586 transitions. [2019-11-07 04:22:12,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 04:22:12,068 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 232 [2019-11-07 04:22:12,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:22:12,076 INFO L225 Difference]: With dead ends: 1371 [2019-11-07 04:22:12,076 INFO L226 Difference]: Without dead ends: 1010 [2019-11-07 04:22:12,077 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2019-11-07 04:22:12,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2019-11-07 04:22:12,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 988. [2019-11-07 04:22:12,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2019-11-07 04:22:12,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1155 transitions. [2019-11-07 04:22:12,130 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1155 transitions. Word has length 232 [2019-11-07 04:22:12,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:22:12,131 INFO L462 AbstractCegarLoop]: Abstraction has 988 states and 1155 transitions. [2019-11-07 04:22:12,131 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 04:22:12,131 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1155 transitions. [2019-11-07 04:22:12,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2019-11-07 04:22:12,137 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:22:12,137 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:22:12,138 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:22:12,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:22:12,138 INFO L82 PathProgramCache]: Analyzing trace with hash -357887677, now seen corresponding path program 1 times [2019-11-07 04:22:12,138 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:22:12,139 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209300227] [2019-11-07 04:22:12,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:22:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:13,405 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-11-07 04:22:13,406 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209300227] [2019-11-07 04:22:13,406 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182407796] [2019-11-07 04:22:13,406 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 04:22:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:14,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 3324 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:22:14,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:22:14,298 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-11-07 04:22:14,298 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:22:15,093 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-11-07 04:22:15,094 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2030858861] [2019-11-07 04:22:15,127 INFO L159 IcfgInterpreter]: Started Sifa with 221 locations of interest [2019-11-07 04:22:15,127 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:22:15,134 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:22:15,139 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:22:15,140 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs