/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_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:21:48,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:21:48,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:21:48,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:21:48,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:21:48,979 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:21:48,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:21:48,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:21:48,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:21:48,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:21:48,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:21:48,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:21:48,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:21:48,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:21:48,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:21:49,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:21:49,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:21:49,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:21:49,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:21:49,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:21:49,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:21:49,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:21:49,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:21:49,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:21:49,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:21:49,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:21:49,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:21:49,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:21:49,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:21:49,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:21:49,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:21:49,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:21:49,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:21:49,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:21:49,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:21:49,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:21:49,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:21:49,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:21:49,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:21:49,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:21:49,022 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:21:49,023 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 04:21:49,037 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:21:49,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:21:49,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:21:49,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:21:49,039 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:21:49,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:21:49,040 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:21:49,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:21:49,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:21:49,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:21:49,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:21:49,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:21:49,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:21:49,041 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:21:49,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:21:49,041 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:21:49,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:21:49,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:21:49,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:21:49,042 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:21:49,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:21:49,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:21:49,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:21:49,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:21:49,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:21:49,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:21:49,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:21:49,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:21:49,044 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 04:21:49,328 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:21:49,341 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:21:49,344 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:21:49,346 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:21:49,346 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:21:49,347 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product28.cil.c [2019-11-07 04:21:49,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/139b2f60c/3fd25507d2054968b907a3902c1ad430/FLAG3a9516c24 [2019-11-07 04:21:50,075 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:21:50,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product28.cil.c [2019-11-07 04:21:50,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/139b2f60c/3fd25507d2054968b907a3902c1ad430/FLAG3a9516c24 [2019-11-07 04:21:50,300 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/139b2f60c/3fd25507d2054968b907a3902c1ad430 [2019-11-07 04:21:50,309 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:21:50,311 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:21:50,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:21:50,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:21:50,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:21:50,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:21:50" (1/1) ... [2019-11-07 04:21:50,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@338e9858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:50, skipping insertion in model container [2019-11-07 04:21:50,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:21:50" (1/1) ... [2019-11-07 04:21:50,328 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:21:50,398 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:21:51,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:21:51,106 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:21:51,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:21:51,366 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:21:51,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:51 WrapperNode [2019-11-07 04:21:51,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:21:51,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:21:51,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:21:51,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:21:51,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:51" (1/1) ... [2019-11-07 04:21:51,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:51" (1/1) ... [2019-11-07 04:21:51,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:51" (1/1) ... [2019-11-07 04:21:51,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:51" (1/1) ... [2019-11-07 04:21:51,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:51" (1/1) ... [2019-11-07 04:21:51,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:51" (1/1) ... [2019-11-07 04:21:51,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:51" (1/1) ... [2019-11-07 04:21:51,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:21:51,574 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:21:51,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:21:51,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:21:51,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:51" (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 04:21:51,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:21:51,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:21:51,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 04:21:51,658 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 04:21:51,658 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 04:21:51,658 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 04:21:51,658 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 04:21:51,659 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 04:21:51,659 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 04:21:51,659 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-11-07 04:21:51,659 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 04:21:51,660 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 04:21:51,660 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 04:21:51,660 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 04:21:51,660 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 04:21:51,660 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 04:21:51,661 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 04:21:51,661 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 04:21:51,661 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 04:21:51,661 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 04:21:51,662 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 04:21:51,662 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 04:21:51,662 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 04:21:51,662 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 04:21:51,663 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 04:21:51,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 04:21:51,663 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 04:21:51,663 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 04:21:51,663 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 04:21:51,663 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 04:21:51,664 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 04:21:51,664 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 04:21:51,664 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 04:21:51,664 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 04:21:51,664 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 04:21:51,665 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 04:21:51,665 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 04:21:51,665 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 04:21:51,665 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 04:21:51,665 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 04:21:51,665 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 04:21:51,666 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 04:21:51,666 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 04:21:51,666 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 04:21:51,666 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 04:21:51,666 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 04:21:51,667 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 04:21:51,667 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 04:21:51,667 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 04:21:51,667 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 04:21:51,667 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 04:21:51,667 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 04:21:51,668 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 04:21:51,668 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 04:21:51,668 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 04:21:51,668 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 04:21:51,668 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 04:21:51,668 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 04:21:51,669 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 04:21:51,669 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 04:21:51,669 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 04:21:51,669 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 04:21:51,670 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 04:21:51,670 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 04:21:51,670 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 04:21:51,670 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 04:21:51,670 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 04:21:51,670 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 04:21:51,671 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 04:21:51,671 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 04:21:51,671 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 04:21:51,671 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 04:21:51,671 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 04:21:51,671 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 04:21:51,672 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 04:21:51,672 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 04:21:51,672 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 04:21:51,672 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 04:21:51,672 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 04:21:51,672 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Encrypt [2019-11-07 04:21:51,673 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-11-07 04:21:51,673 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 04:21:51,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 04:21:51,673 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 04:21:51,673 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 04:21:51,673 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 04:21:51,674 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 04:21:51,674 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 04:21:51,674 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 04:21:51,674 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 04:21:51,674 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 04:21:51,674 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 04:21:51,674 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 04:21:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 04:21:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 04:21:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:21:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 04:21:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 04:21:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 04:21:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 04:21:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 04:21:51,676 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 04:21:51,676 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 04:21:51,676 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 04:21:51,676 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 04:21:51,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-11-07 04:21:51,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 04:21:51,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 04:21:51,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 04:21:51,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 04:21:51,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 04:21:51,677 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 04:21:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:21:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:21:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 04:21:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 04:21:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 04:21:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 04:21:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 04:21:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 04:21:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 04:21:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 04:21:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 04:21:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 04:21:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 04:21:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 04:21:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 04:21:51,679 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 04:21:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 04:21:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 04:21:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 04:21:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 04:21:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 04:21:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 04:21:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 04:21:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 04:21:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 04:21:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 04:21:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 04:21:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 04:21:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 04:21:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 04:21:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 04:21:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 04:21:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 04:21:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 04:21:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 04:21:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 04:21:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 04:21:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 04:21:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 04:21:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 04:21:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 04:21:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-11-07 04:21:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:21:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 04:21:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-11-07 04:21:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 04:21:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 04:21:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 04:21:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 04:21:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 04:21:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 04:21:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 04:21:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 04:21:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 04:21:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 04:21:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 04:21:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 04:21:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 04:21:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 04:21:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 04:21:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 04:21:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 04:21:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 04:21:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 04:21:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 04:21:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 04:21:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 04:21:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 04:21:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 04:21:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 04:21:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 04:21:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 04:21:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 04:21:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 04:21:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 04:21:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 04:21:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 04:21:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 04:21:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 04:21:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 04:21:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 04:21:51,688 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 04:21:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 04:21:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 04:21:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 04:21:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 04:21:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 04:21:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 04:21:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 04:21:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 04:21:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 04:21:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 04:21:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 04:21:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 04:21:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Encrypt [2019-11-07 04:21:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-11-07 04:21:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 04:21:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 04:21:51,691 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 04:21:51,691 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 04:21:51,691 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 04:21:51,691 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 04:21:51,691 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:21:51,691 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 04:21:51,691 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 04:21:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 04:21:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 04:21:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 04:21:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 04:21:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:21:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 04:21:51,692 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 04:21:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:21:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 04:21:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:21:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 04:21:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 04:21:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:21:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 04:21:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 04:21:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:21:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 04:21:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 04:21:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 04:21:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:21:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 04:21:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:21:56,082 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:21:56,083 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 04:21:56,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:21:56 BoogieIcfgContainer [2019-11-07 04:21:56,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:21:56,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:21:56,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:21:56,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:21:56,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:21:50" (1/3) ... [2019-11-07 04:21:56,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd8e3ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:21:56, skipping insertion in model container [2019-11-07 04:21:56,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:21:51" (2/3) ... [2019-11-07 04:21:56,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd8e3ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:21:56, skipping insertion in model container [2019-11-07 04:21:56,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:21:56" (3/3) ... [2019-11-07 04:21:56,093 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product28.cil.c [2019-11-07 04:21:56,150 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:21:56,164 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:21:56,176 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:21:56,215 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:21:56,215 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:21:56,215 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:21:56,216 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:21:56,216 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:21:56,216 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:21:56,216 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:21:56,216 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:21:56,254 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states. [2019-11-07 04:21:56,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-11-07 04:21:56,270 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:21:56,271 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, 1, 1, 1] [2019-11-07 04:21:56,273 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:21:56,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:21:56,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1013542128, now seen corresponding path program 1 times [2019-11-07 04:21:56,290 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:21:56,290 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482039477] [2019-11-07 04:21:56,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:21:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:21:56,844 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 04:21:56,845 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482039477] [2019-11-07 04:21:56,846 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:21:56,846 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 04:21:56,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173100951] [2019-11-07 04:21:56,853 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 04:21:56,853 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:21:56,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 04:21:56,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 04:21:56,870 INFO L87 Difference]: Start difference. First operand 373 states. Second operand 2 states. [2019-11-07 04:21:56,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:21:56,935 INFO L93 Difference]: Finished difference Result 519 states and 617 transitions. [2019-11-07 04:21:56,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 04:21:56,937 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 129 [2019-11-07 04:21:56,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:21:56,970 INFO L225 Difference]: With dead ends: 519 [2019-11-07 04:21:56,970 INFO L226 Difference]: Without dead ends: 331 [2019-11-07 04:21:56,984 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 04:21:57,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2019-11-07 04:21:57,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2019-11-07 04:21:57,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2019-11-07 04:21:57,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 393 transitions. [2019-11-07 04:21:57,121 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 393 transitions. Word has length 129 [2019-11-07 04:21:57,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:21:57,125 INFO L462 AbstractCegarLoop]: Abstraction has 331 states and 393 transitions. [2019-11-07 04:21:57,125 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 04:21:57,126 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 393 transitions. [2019-11-07 04:21:57,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-11-07 04:21:57,138 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:21:57,138 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, 1, 1, 1, 1] [2019-11-07 04:21:57,140 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:21:57,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:21:57,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1455665787, now seen corresponding path program 1 times [2019-11-07 04:21:57,140 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:21:57,140 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282128735] [2019-11-07 04:21:57,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:21:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:21:57,364 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 04:21:57,365 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282128735] [2019-11-07 04:21:57,365 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:21:57,365 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:21:57,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654611478] [2019-11-07 04:21:57,370 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:21:57,371 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:21:57,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:21:57,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:21:57,372 INFO L87 Difference]: Start difference. First operand 331 states and 393 transitions. Second operand 3 states. [2019-11-07 04:21:57,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:21:57,444 INFO L93 Difference]: Finished difference Result 504 states and 588 transitions. [2019-11-07 04:21:57,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:21:57,447 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2019-11-07 04:21:57,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:21:57,454 INFO L225 Difference]: With dead ends: 504 [2019-11-07 04:21:57,454 INFO L226 Difference]: Without dead ends: 333 [2019-11-07 04:21:57,457 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 04:21:57,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2019-11-07 04:21:57,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2019-11-07 04:21:57,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2019-11-07 04:21:57,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 395 transitions. [2019-11-07 04:21:57,487 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 395 transitions. Word has length 130 [2019-11-07 04:21:57,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:21:57,488 INFO L462 AbstractCegarLoop]: Abstraction has 333 states and 395 transitions. [2019-11-07 04:21:57,488 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:21:57,488 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 395 transitions. [2019-11-07 04:21:57,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-11-07 04:21:57,491 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:21:57,491 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] [2019-11-07 04:21:57,491 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:21:57,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:21:57,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1056828107, now seen corresponding path program 1 times [2019-11-07 04:21:57,492 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:21:57,492 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784878760] [2019-11-07 04:21:57,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:21:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:21:57,707 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 04:21:57,708 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784878760] [2019-11-07 04:21:57,708 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:21:57,708 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:21:57,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572236865] [2019-11-07 04:21:57,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:21:57,710 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:21:57,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:21:57,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:21:57,710 INFO L87 Difference]: Start difference. First operand 333 states and 395 transitions. Second operand 3 states. [2019-11-07 04:21:57,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:21:57,757 INFO L93 Difference]: Finished difference Result 646 states and 794 transitions. [2019-11-07 04:21:57,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:21:57,758 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2019-11-07 04:21:57,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:21:57,765 INFO L225 Difference]: With dead ends: 646 [2019-11-07 04:21:57,765 INFO L226 Difference]: Without dead ends: 371 [2019-11-07 04:21:57,768 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 04:21:57,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2019-11-07 04:21:57,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 370. [2019-11-07 04:21:57,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 370 states. [2019-11-07 04:21:57,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 460 transitions. [2019-11-07 04:21:57,837 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 460 transitions. Word has length 135 [2019-11-07 04:21:57,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:21:57,838 INFO L462 AbstractCegarLoop]: Abstraction has 370 states and 460 transitions. [2019-11-07 04:21:57,838 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:21:57,839 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 460 transitions. [2019-11-07 04:21:57,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-11-07 04:21:57,849 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:21:57,849 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] [2019-11-07 04:21:57,850 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:21:57,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:21:57,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1879652668, now seen corresponding path program 1 times [2019-11-07 04:21:57,850 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:21:57,851 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838811986] [2019-11-07 04:21:57,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:21:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:21:58,629 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 04:21:58,629 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838811986] [2019-11-07 04:21:58,629 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:21:58,630 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2019-11-07 04:21:58,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736913751] [2019-11-07 04:21:58,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-07 04:21:58,635 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:21:58,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-07 04:21:58,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2019-11-07 04:21:58,636 INFO L87 Difference]: Start difference. First operand 370 states and 460 transitions. Second operand 21 states. [2019-11-07 04:22:06,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:22:06,386 INFO L93 Difference]: Finished difference Result 726 states and 874 transitions. [2019-11-07 04:22:06,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-07 04:22:06,387 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 136 [2019-11-07 04:22:06,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:22:06,393 INFO L225 Difference]: With dead ends: 726 [2019-11-07 04:22:06,394 INFO L226 Difference]: Without dead ends: 551 [2019-11-07 04:22:06,395 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 04:22:06,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2019-11-07 04:22:06,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 544. [2019-11-07 04:22:06,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2019-11-07 04:22:06,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 664 transitions. [2019-11-07 04:22:06,432 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 664 transitions. Word has length 136 [2019-11-07 04:22:06,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:22:06,433 INFO L462 AbstractCegarLoop]: Abstraction has 544 states and 664 transitions. [2019-11-07 04:22:06,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-07 04:22:06,433 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 664 transitions. [2019-11-07 04:22:06,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-11-07 04:22:06,436 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:22:06,436 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] [2019-11-07 04:22:06,436 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:22:06,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:22:06,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1993117976, now seen corresponding path program 1 times [2019-11-07 04:22:06,437 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:22:06,437 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279454466] [2019-11-07 04:22:06,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:22:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:06,959 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 04:22:06,960 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279454466] [2019-11-07 04:22:06,960 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:22:06,960 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2019-11-07 04:22:06,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344819724] [2019-11-07 04:22:06,961 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-07 04:22:06,961 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:22:06,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-07 04:22:06,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2019-11-07 04:22:06,963 INFO L87 Difference]: Start difference. First operand 544 states and 664 transitions. Second operand 23 states. [2019-11-07 04:22:08,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:22:08,842 INFO L93 Difference]: Finished difference Result 622 states and 754 transitions. [2019-11-07 04:22:08,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-11-07 04:22:08,842 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 142 [2019-11-07 04:22:08,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:22:08,851 INFO L225 Difference]: With dead ends: 622 [2019-11-07 04:22:08,852 INFO L226 Difference]: Without dead ends: 586 [2019-11-07 04:22:08,854 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=213, Invalid=1949, Unknown=0, NotChecked=0, Total=2162 [2019-11-07 04:22:08,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2019-11-07 04:22:08,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 581. [2019-11-07 04:22:08,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2019-11-07 04:22:08,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 701 transitions. [2019-11-07 04:22:08,898 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 701 transitions. Word has length 142 [2019-11-07 04:22:08,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:22:08,899 INFO L462 AbstractCegarLoop]: Abstraction has 581 states and 701 transitions. [2019-11-07 04:22:08,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-07 04:22:08,900 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 701 transitions. [2019-11-07 04:22:08,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2019-11-07 04:22:08,904 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:22:08,905 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, 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 04:22:08,905 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:22:08,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:22:08,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1451128363, now seen corresponding path program 1 times [2019-11-07 04:22:08,906 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:22:08,906 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699742732] [2019-11-07 04:22:08,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:22:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:09,598 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-07 04:22:09,599 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699742732] [2019-11-07 04:22:09,599 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:22:09,599 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2019-11-07 04:22:09,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977653707] [2019-11-07 04:22:09,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-11-07 04:22:09,600 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:22:09,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-11-07 04:22:09,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=691, Unknown=0, NotChecked=0, Total=756 [2019-11-07 04:22:09,601 INFO L87 Difference]: Start difference. First operand 581 states and 701 transitions. Second operand 28 states. [2019-11-07 04:22:18,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:22:18,658 INFO L93 Difference]: Finished difference Result 1196 states and 1417 transitions. [2019-11-07 04:22:18,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-11-07 04:22:18,662 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 241 [2019-11-07 04:22:18,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:22:18,678 INFO L225 Difference]: With dead ends: 1196 [2019-11-07 04:22:18,678 INFO L226 Difference]: Without dead ends: 993 [2019-11-07 04:22:18,685 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=315, Invalid=3717, Unknown=0, NotChecked=0, Total=4032 [2019-11-07 04:22:18,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2019-11-07 04:22:18,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 922. [2019-11-07 04:22:18,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 922 states. [2019-11-07 04:22:18,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1086 transitions. [2019-11-07 04:22:18,830 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1086 transitions. Word has length 241 [2019-11-07 04:22:18,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:22:18,834 INFO L462 AbstractCegarLoop]: Abstraction has 922 states and 1086 transitions. [2019-11-07 04:22:18,834 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-11-07 04:22:18,834 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1086 transitions. [2019-11-07 04:22:18,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2019-11-07 04:22:18,847 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:22:18,849 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, 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] [2019-11-07 04:22:18,849 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:22:18,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:22:18,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1128841092, now seen corresponding path program 1 times [2019-11-07 04:22:18,850 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:22:18,850 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060678123] [2019-11-07 04:22:18,850 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:22:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:19,163 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-07 04:22:19,164 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060678123] [2019-11-07 04:22:19,164 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:22:19,164 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 04:22:19,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686273886] [2019-11-07 04:22:19,166 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 04:22:19,166 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:22:19,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 04:22:19,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:22:19,167 INFO L87 Difference]: Start difference. First operand 922 states and 1086 transitions. Second operand 10 states. [2019-11-07 04:22:19,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:22:19,241 INFO L93 Difference]: Finished difference Result 1321 states and 1526 transitions. [2019-11-07 04:22:19,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 04:22:19,242 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 245 [2019-11-07 04:22:19,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:22:19,250 INFO L225 Difference]: With dead ends: 1321 [2019-11-07 04:22:19,250 INFO L226 Difference]: Without dead ends: 962 [2019-11-07 04:22:19,252 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 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 04:22:19,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2019-11-07 04:22:19,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 930. [2019-11-07 04:22:19,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 930 states. [2019-11-07 04:22:19,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1092 transitions. [2019-11-07 04:22:19,308 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1092 transitions. Word has length 245 [2019-11-07 04:22:19,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:22:19,309 INFO L462 AbstractCegarLoop]: Abstraction has 930 states and 1092 transitions. [2019-11-07 04:22:19,309 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 04:22:19,309 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1092 transitions. [2019-11-07 04:22:19,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2019-11-07 04:22:19,316 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:22:19,317 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, 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] [2019-11-07 04:22:19,317 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:22:19,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:22:19,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1286624871, now seen corresponding path program 1 times [2019-11-07 04:22:19,318 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:22:19,318 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513550042] [2019-11-07 04:22:19,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:22:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:19,917 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-11-07 04:22:19,918 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513550042] [2019-11-07 04:22:19,918 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786706438] [2019-11-07 04:22:19,918 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 04:22:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:22:20,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 3001 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 04:22:20,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:22:20,761 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 04:22:20,762 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:22:21,382 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-07 04:22:21,383 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1000672002] [2019-11-07 04:22:21,416 INFO L159 IcfgInterpreter]: Started Sifa with 203 locations of interest [2019-11-07 04:22:21,417 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:22:21,425 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:22:21,434 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:22:21,434 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs