/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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec3_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:51:22,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:51:22,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:51:22,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:51:22,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:51:22,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:51:22,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:51:22,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:51:22,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:51:22,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:51:22,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:51:22,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:51:22,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:51:22,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:51:22,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:51:22,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:51:22,917 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:51:22,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:51:22,920 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:51:22,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:51:22,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:51:22,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:51:22,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:51:22,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:51:22,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:51:22,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:51:22,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:51:22,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:51:22,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:51:22,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:51:22,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:51:22,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:51:22,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:51:22,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:51:22,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:51:22,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:51:22,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:51:22,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:51:22,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:51:22,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:51:22,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:51:22,952 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 00:51:22,985 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:51:22,985 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:51:22,991 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:51:22,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:51:22,991 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:51:22,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:51:22,992 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:51:22,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:51:22,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:51:22,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:51:22,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:51:22,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:51:22,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:51:22,994 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:51:22,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:51:22,995 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:51:22,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:51:22,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:51:22,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:51:22,995 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:51:22,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:51:22,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:51:22,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:51:22,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:51:22,997 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:51:22,997 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:51:22,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:51:22,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:51:22,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:51:23,290 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:51:23,312 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:51:23,315 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:51:23,317 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:51:23,317 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:51:23,318 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product33.cil.c [2019-11-07 00:51:23,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/290e02a8f/dc41022ecfa04db6b0505a84cb0031b8/FLAGbc74e829d [2019-11-07 00:51:24,042 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:51:24,043 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product33.cil.c [2019-11-07 00:51:24,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/290e02a8f/dc41022ecfa04db6b0505a84cb0031b8/FLAGbc74e829d [2019-11-07 00:51:24,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/290e02a8f/dc41022ecfa04db6b0505a84cb0031b8 [2019-11-07 00:51:24,238 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:51:24,239 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:51:24,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:51:24,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:51:24,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:51:24,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:51:24" (1/1) ... [2019-11-07 00:51:24,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b72e4bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:24, skipping insertion in model container [2019-11-07 00:51:24,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:51:24" (1/1) ... [2019-11-07 00:51:24,264 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:51:24,357 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:51:25,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:51:25,135 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:51:25,292 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:51:25,460 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:51:25,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:25 WrapperNode [2019-11-07 00:51:25,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:51:25,461 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:51:25,462 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:51:25,462 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:51:25,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:25" (1/1) ... [2019-11-07 00:51:25,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:25" (1/1) ... [2019-11-07 00:51:25,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:25" (1/1) ... [2019-11-07 00:51:25,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:25" (1/1) ... [2019-11-07 00:51:25,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:25" (1/1) ... [2019-11-07 00:51:25,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:25" (1/1) ... [2019-11-07 00:51:25,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:25" (1/1) ... [2019-11-07 00:51:25,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:51:25,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:51:25,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:51:25,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:51:25,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:25" (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 00:51:25,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:51:25,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:51:25,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:51:25,798 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:51:25,798 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:51:25,799 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:51:25,799 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:51:25,800 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:51:25,800 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:51:25,800 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:51:25,801 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:51:25,801 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:51:25,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:51:25,802 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:51:25,802 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:51:25,802 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:51:25,804 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:51:25,804 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:51:25,805 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:51:25,805 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:51:25,805 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:51:25,805 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:51:25,806 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:51:25,806 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:51:25,806 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:51:25,806 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:51:25,806 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:51:25,806 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:51:25,806 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:51:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:51:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:51:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:51:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:51:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:51:25,807 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:51:25,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:51:25,808 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:51:25,808 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:51:25,808 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:51:25,808 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:51:25,809 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:51:25,809 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:51:25,809 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:51:25,809 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:51:25,810 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:51:25,810 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:51:25,810 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:51:25,810 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:51:25,810 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:51:25,810 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:51:25,811 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:51:25,811 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:51:25,811 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:51:25,811 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:51:25,811 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:51:25,811 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:51:25,811 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:51:25,812 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:51:25,812 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:51:25,812 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:51:25,812 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:51:25,812 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:51:25,813 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:51:25,813 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:51:25,813 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:51:25,813 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:51:25,814 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:51:25,814 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:51:25,814 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:51:25,814 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:51:25,814 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:51:25,814 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:51:25,814 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:51:25,815 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:51:25,815 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:51:25,815 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:51:25,816 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:51:25,816 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:51:25,816 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:51:25,816 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-11-07 00:51:25,817 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-11-07 00:51:25,817 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:51:25,817 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:51:25,817 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:51:25,817 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:51:25,818 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:51:25,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:51:25,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:51:25,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:51:25,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:51:25,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:51:25,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:51:25,820 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:51:25,820 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:51:25,820 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:51:25,820 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:51:25,820 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:51:25,820 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:51:25,821 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:51:25,821 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:51:25,821 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:51:25,821 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:51:25,821 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:51:25,821 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:51:25,821 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:51:25,822 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:51:25,822 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:51:25,822 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:51:25,822 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:51:25,822 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:51:25,822 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:51:25,822 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:51:25,823 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:51:25,823 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:51:25,823 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:51:25,823 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:51:25,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-11-07 00:51:25,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-11-07 00:51:25,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:51:25,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:51:25,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:51:25,825 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:51:25,825 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:51:25,825 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:51:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:51:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:51:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:51:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:51:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:51:25,826 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:51:25,827 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:51:25,827 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:51:25,827 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:51:25,827 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:51:25,827 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:51:25,828 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:51:25,829 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:51:25,832 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:51:25,832 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:51:25,832 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:51:25,833 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:51:25,833 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:51:25,833 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:51:25,834 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:51:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:51:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:51:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:51:25,840 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:51:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:51:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:51:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:51:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:51:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:51:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:51:25,841 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:51:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:51:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:51:25,843 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:51:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:51:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:51:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:51:25,844 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:51:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:51:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:51:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:51:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:51:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:51:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:51:25,845 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:51:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:51:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:51:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:51:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:51:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:51:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:51:25,846 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:51:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:51:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:51:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:51:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:51:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:51:25,847 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:51:25,848 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:51:25,848 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:51:25,848 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:51:25,848 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:51:25,848 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:51:25,848 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:51:25,848 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:51:25,849 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:51:25,849 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:51:25,849 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:51:25,849 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:51:25,849 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:51:25,849 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:51:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:51:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:51:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:51:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:51:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:51:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:51:25,850 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:51:25,851 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:51:25,851 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:51:25,851 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:51:25,851 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:51:25,851 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:51:25,851 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:51:25,851 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:51:25,852 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:51:25,852 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:51:25,852 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-11-07 00:51:25,852 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-11-07 00:51:25,852 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:51:25,852 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:51:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:51:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:51:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:51:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:51:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:51:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:51:25,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:51:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:51:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:51:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:51:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:51:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:51:25,854 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:51:25,855 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:51:25,855 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:51:25,855 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:51:25,855 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:51:25,855 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:51:25,855 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:51:25,856 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:51:25,856 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:51:25,856 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:51:25,856 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:51:25,856 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:51:25,856 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:51:25,856 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-11-07 00:51:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:51:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:51:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:51:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:51:25,857 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:51:25,858 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:51:25,858 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-11-07 00:51:25,858 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:51:25,858 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:51:25,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:51:25,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:51:25,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:51:28,367 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:51:28,367 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:51:28,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:51:28 BoogieIcfgContainer [2019-11-07 00:51:28,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:51:28,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:51:28,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:51:28,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:51:28,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:51:24" (1/3) ... [2019-11-07 00:51:28,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@373c00a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:51:28, skipping insertion in model container [2019-11-07 00:51:28,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:25" (2/3) ... [2019-11-07 00:51:28,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@373c00a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:51:28, skipping insertion in model container [2019-11-07 00:51:28,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:51:28" (3/3) ... [2019-11-07 00:51:28,387 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product33.cil.c [2019-11-07 00:51:28,398 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:51:28,409 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:51:28,422 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:51:28,473 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:51:28,473 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:51:28,474 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:51:28,477 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:51:28,477 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:51:28,477 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:51:28,478 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:51:28,478 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:51:28,526 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states. [2019-11-07 00:51:28,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-11-07 00:51:28,562 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:28,563 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:51:28,568 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:28,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:28,576 INFO L82 PathProgramCache]: Analyzing trace with hash -420941133, now seen corresponding path program 1 times [2019-11-07 00:51:28,586 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:28,586 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271826028] [2019-11-07 00:51:28,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:29,257 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:51:29,258 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271826028] [2019-11-07 00:51:29,259 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:29,259 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:51:29,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304517333] [2019-11-07 00:51:29,268 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:51:29,270 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:29,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:51:29,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:51:29,287 INFO L87 Difference]: Start difference. First operand 602 states. Second operand 2 states. [2019-11-07 00:51:29,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:29,381 INFO L93 Difference]: Finished difference Result 935 states and 1233 transitions. [2019-11-07 00:51:29,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:51:29,382 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 195 [2019-11-07 00:51:29,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:29,412 INFO L225 Difference]: With dead ends: 935 [2019-11-07 00:51:29,412 INFO L226 Difference]: Without dead ends: 579 [2019-11-07 00:51:29,419 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 00:51:29,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2019-11-07 00:51:29,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 579. [2019-11-07 00:51:29,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 579 states. [2019-11-07 00:51:29,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 765 transitions. [2019-11-07 00:51:29,523 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 765 transitions. Word has length 195 [2019-11-07 00:51:29,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:29,525 INFO L462 AbstractCegarLoop]: Abstraction has 579 states and 765 transitions. [2019-11-07 00:51:29,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:51:29,525 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 765 transitions. [2019-11-07 00:51:29,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-11-07 00:51:29,531 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:29,531 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:51:29,531 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:29,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:29,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1855300541, now seen corresponding path program 1 times [2019-11-07 00:51:29,532 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:29,532 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688989269] [2019-11-07 00:51:29,533 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:29,904 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:51:29,905 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688989269] [2019-11-07 00:51:29,905 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:29,905 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:29,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097345841] [2019-11-07 00:51:29,918 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:29,919 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:29,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:29,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:29,919 INFO L87 Difference]: Start difference. First operand 579 states and 765 transitions. Second operand 3 states. [2019-11-07 00:51:30,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:30,013 INFO L93 Difference]: Finished difference Result 918 states and 1196 transitions. [2019-11-07 00:51:30,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:30,014 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2019-11-07 00:51:30,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:30,020 INFO L225 Difference]: With dead ends: 918 [2019-11-07 00:51:30,020 INFO L226 Difference]: Without dead ends: 582 [2019-11-07 00:51:30,023 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 00:51:30,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2019-11-07 00:51:30,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 581. [2019-11-07 00:51:30,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2019-11-07 00:51:30,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 767 transitions. [2019-11-07 00:51:30,068 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 767 transitions. Word has length 196 [2019-11-07 00:51:30,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:30,072 INFO L462 AbstractCegarLoop]: Abstraction has 581 states and 767 transitions. [2019-11-07 00:51:30,072 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:30,072 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 767 transitions. [2019-11-07 00:51:30,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2019-11-07 00:51:30,077 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:30,077 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:51:30,077 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:30,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:30,078 INFO L82 PathProgramCache]: Analyzing trace with hash -2077671956, now seen corresponding path program 1 times [2019-11-07 00:51:30,078 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:30,078 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574285047] [2019-11-07 00:51:30,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:30,278 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:51:30,279 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574285047] [2019-11-07 00:51:30,279 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:30,279 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:30,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830345558] [2019-11-07 00:51:30,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:30,284 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:30,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:30,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:30,285 INFO L87 Difference]: Start difference. First operand 581 states and 767 transitions. Second operand 3 states. [2019-11-07 00:51:30,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:30,344 INFO L93 Difference]: Finished difference Result 1140 states and 1535 transitions. [2019-11-07 00:51:30,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:30,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2019-11-07 00:51:30,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:30,355 INFO L225 Difference]: With dead ends: 1140 [2019-11-07 00:51:30,355 INFO L226 Difference]: Without dead ends: 624 [2019-11-07 00:51:30,358 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 00:51:30,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2019-11-07 00:51:30,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 623. [2019-11-07 00:51:30,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2019-11-07 00:51:30,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 839 transitions. [2019-11-07 00:51:30,417 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 839 transitions. Word has length 208 [2019-11-07 00:51:30,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:30,417 INFO L462 AbstractCegarLoop]: Abstraction has 623 states and 839 transitions. [2019-11-07 00:51:30,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:30,418 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 839 transitions. [2019-11-07 00:51:30,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-11-07 00:51:30,425 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:30,426 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:51:30,427 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:30,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:30,427 INFO L82 PathProgramCache]: Analyzing trace with hash -339129856, now seen corresponding path program 1 times [2019-11-07 00:51:30,428 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:30,428 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810105105] [2019-11-07 00:51:30,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:51:30,715 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810105105] [2019-11-07 00:51:30,715 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:30,715 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:30,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821270529] [2019-11-07 00:51:30,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:30,716 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:30,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:30,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:30,717 INFO L87 Difference]: Start difference. First operand 623 states and 839 transitions. Second operand 3 states. [2019-11-07 00:51:30,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:30,758 INFO L93 Difference]: Finished difference Result 1263 states and 1746 transitions. [2019-11-07 00:51:30,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:30,758 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2019-11-07 00:51:30,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:30,766 INFO L225 Difference]: With dead ends: 1263 [2019-11-07 00:51:30,766 INFO L226 Difference]: Without dead ends: 705 [2019-11-07 00:51:30,769 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 00:51:30,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2019-11-07 00:51:30,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 704. [2019-11-07 00:51:30,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2019-11-07 00:51:30,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 977 transitions. [2019-11-07 00:51:30,806 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 977 transitions. Word has length 209 [2019-11-07 00:51:30,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:30,808 INFO L462 AbstractCegarLoop]: Abstraction has 704 states and 977 transitions. [2019-11-07 00:51:30,808 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:30,808 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 977 transitions. [2019-11-07 00:51:30,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-11-07 00:51:30,812 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:30,812 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:51:30,813 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:30,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:30,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1667814782, now seen corresponding path program 1 times [2019-11-07 00:51:30,813 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:30,814 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281135912] [2019-11-07 00:51:30,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:31,323 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:51:31,324 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281135912] [2019-11-07 00:51:31,324 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227555871] [2019-11-07 00:51:31,325 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 00:51:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:32,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 2993 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:51:32,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:32,504 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:51:32,504 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:32,989 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:51:33,094 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:33,201 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:33,399 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:33,400 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:51:33,400 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-11-07 00:51:33,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316773083] [2019-11-07 00:51:33,401 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:51:33,401 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:33,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:51:33,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:51:33,402 INFO L87 Difference]: Start difference. First operand 704 states and 977 transitions. Second operand 9 states. [2019-11-07 00:51:36,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:36,205 INFO L93 Difference]: Finished difference Result 1386 states and 1934 transitions. [2019-11-07 00:51:36,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:51:36,207 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2019-11-07 00:51:36,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:36,214 INFO L225 Difference]: With dead ends: 1386 [2019-11-07 00:51:36,215 INFO L226 Difference]: Without dead ends: 718 [2019-11-07 00:51:36,220 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 413 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:51:36,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2019-11-07 00:51:36,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2019-11-07 00:51:36,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 718 states. [2019-11-07 00:51:36,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 995 transitions. [2019-11-07 00:51:36,269 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 995 transitions. Word has length 212 [2019-11-07 00:51:36,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:36,270 INFO L462 AbstractCegarLoop]: Abstraction has 718 states and 995 transitions. [2019-11-07 00:51:36,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:51:36,270 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 995 transitions. [2019-11-07 00:51:36,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-11-07 00:51:36,274 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:36,275 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:51:36,483 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:36,483 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:36,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:36,484 INFO L82 PathProgramCache]: Analyzing trace with hash 2040788742, now seen corresponding path program 1 times [2019-11-07 00:51:36,484 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:36,484 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102265372] [2019-11-07 00:51:36,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:37,008 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:51:37,009 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102265372] [2019-11-07 00:51:37,009 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461885335] [2019-11-07 00:51:37,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:37,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 2994 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:51:37,732 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:37,911 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:51:37,911 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:38,311 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:38,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:38,456 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:51:38,456 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-11-07 00:51:38,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082250988] [2019-11-07 00:51:38,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:51:38,457 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:38,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:51:38,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:51:38,459 INFO L87 Difference]: Start difference. First operand 718 states and 995 transitions. Second operand 7 states. [2019-11-07 00:51:40,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:40,425 INFO L93 Difference]: Finished difference Result 1387 states and 1940 transitions. [2019-11-07 00:51:40,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:51:40,425 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2019-11-07 00:51:40,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:40,431 INFO L225 Difference]: With dead ends: 1387 [2019-11-07 00:51:40,432 INFO L226 Difference]: Without dead ends: 720 [2019-11-07 00:51:40,435 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 420 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-11-07 00:51:40,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2019-11-07 00:51:40,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 720. [2019-11-07 00:51:40,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 720 states. [2019-11-07 00:51:40,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 998 transitions. [2019-11-07 00:51:40,465 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 998 transitions. Word has length 213 [2019-11-07 00:51:40,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:40,465 INFO L462 AbstractCegarLoop]: Abstraction has 720 states and 998 transitions. [2019-11-07 00:51:40,465 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:51:40,465 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 998 transitions. [2019-11-07 00:51:40,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-11-07 00:51:40,470 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:40,470 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:51:40,681 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:40,681 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:40,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:40,682 INFO L82 PathProgramCache]: Analyzing trace with hash -2011673792, now seen corresponding path program 1 times [2019-11-07 00:51:40,682 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:40,682 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027801883] [2019-11-07 00:51:40,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:41,211 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:51:41,212 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027801883] [2019-11-07 00:51:41,212 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614596727] [2019-11-07 00:51:41,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:41,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 2995 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:51:41,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:42,213 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:51:42,214 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:42,621 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:51:42,724 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:42,848 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:43,007 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:43,008 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:51:43,008 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-11-07 00:51:43,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891217815] [2019-11-07 00:51:43,009 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:51:43,010 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:43,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:51:43,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-11-07 00:51:43,011 INFO L87 Difference]: Start difference. First operand 720 states and 998 transitions. Second operand 16 states. [2019-11-07 00:51:45,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:45,904 INFO L93 Difference]: Finished difference Result 1391 states and 1938 transitions. [2019-11-07 00:51:45,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:51:45,905 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 214 [2019-11-07 00:51:45,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:45,911 INFO L225 Difference]: With dead ends: 1391 [2019-11-07 00:51:45,911 INFO L226 Difference]: Without dead ends: 732 [2019-11-07 00:51:45,914 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 417 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-11-07 00:51:45,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2019-11-07 00:51:45,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 730. [2019-11-07 00:51:45,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 730 states. [2019-11-07 00:51:45,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1009 transitions. [2019-11-07 00:51:45,944 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1009 transitions. Word has length 214 [2019-11-07 00:51:45,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:45,945 INFO L462 AbstractCegarLoop]: Abstraction has 730 states and 1009 transitions. [2019-11-07 00:51:45,945 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:51:45,945 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1009 transitions. [2019-11-07 00:51:45,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-11-07 00:51:45,950 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:45,950 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:51:46,159 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:46,160 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:46,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:46,160 INFO L82 PathProgramCache]: Analyzing trace with hash -639100572, now seen corresponding path program 2 times [2019-11-07 00:51:46,161 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:46,161 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252641568] [2019-11-07 00:51:46,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:46,671 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:46,672 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252641568] [2019-11-07 00:51:46,672 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357642046] [2019-11-07 00:51:46,672 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:47,402 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:51:47,403 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:51:47,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 2337 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 00:51:47,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:47,671 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:51:47,671 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:48,444 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:51:48,445 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:51:48,446 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-11-07 00:51:48,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938813390] [2019-11-07 00:51:48,448 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:51:48,448 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:48,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:51:48,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:51:48,450 INFO L87 Difference]: Start difference. First operand 730 states and 1009 transitions. Second operand 14 states. [2019-11-07 00:51:51,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:51,506 INFO L93 Difference]: Finished difference Result 2445 states and 3411 transitions. [2019-11-07 00:51:51,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 00:51:51,507 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 215 [2019-11-07 00:51:51,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:51,520 INFO L225 Difference]: With dead ends: 2445 [2019-11-07 00:51:51,520 INFO L226 Difference]: Without dead ends: 2122 [2019-11-07 00:51:51,523 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 428 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-11-07 00:51:51,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2019-11-07 00:51:51,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 1750. [2019-11-07 00:51:51,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1750 states. [2019-11-07 00:51:51,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 2507 transitions. [2019-11-07 00:51:51,616 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 2507 transitions. Word has length 215 [2019-11-07 00:51:51,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:51,617 INFO L462 AbstractCegarLoop]: Abstraction has 1750 states and 2507 transitions. [2019-11-07 00:51:51,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:51:51,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 2507 transitions. [2019-11-07 00:51:51,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-11-07 00:51:51,625 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:51,625 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:51:51,832 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:51,833 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:51,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:51,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1539572673, now seen corresponding path program 1 times [2019-11-07 00:51:51,834 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:51,834 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950639414] [2019-11-07 00:51:51,835 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:52,193 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:52,194 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950639414] [2019-11-07 00:51:52,195 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540628798] [2019-11-07 00:51:52,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:53,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 2997 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:51:53,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:53,310 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:51:53,311 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:53,692 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:51:53,787 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:53,889 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:54,062 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:54,063 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:51:54,063 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-11-07 00:51:54,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462529333] [2019-11-07 00:51:54,064 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:51:54,064 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:54,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:51:54,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:51:54,064 INFO L87 Difference]: Start difference. First operand 1750 states and 2507 transitions. Second operand 15 states. [2019-11-07 00:51:56,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:56,887 INFO L93 Difference]: Finished difference Result 3394 states and 4890 transitions. [2019-11-07 00:51:56,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:51:56,888 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 216 [2019-11-07 00:51:56,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:56,899 INFO L225 Difference]: With dead ends: 3394 [2019-11-07 00:51:56,899 INFO L226 Difference]: Without dead ends: 1756 [2019-11-07 00:51:56,905 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 421 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:51:56,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1756 states. [2019-11-07 00:51:56,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1756 to 1750. [2019-11-07 00:51:56,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1750 states. [2019-11-07 00:51:56,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 2505 transitions. [2019-11-07 00:51:56,981 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 2505 transitions. Word has length 216 [2019-11-07 00:51:56,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:56,982 INFO L462 AbstractCegarLoop]: Abstraction has 1750 states and 2505 transitions. [2019-11-07 00:51:56,982 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:51:56,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 2505 transitions. [2019-11-07 00:51:56,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-11-07 00:51:56,988 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:56,989 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-11-07 00:51:57,205 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:57,205 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:57,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:57,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1302834070, now seen corresponding path program 1 times [2019-11-07 00:51:57,206 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:57,206 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75045008] [2019-11-07 00:51:57,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:57,483 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:57,483 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75045008] [2019-11-07 00:51:57,483 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613434288] [2019-11-07 00:51:57,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:58,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:58,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 2998 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:51:58,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:58,458 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:51:58,459 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:58,840 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:58,907 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:58,981 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:51:58,981 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:51:58,982 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-11-07 00:51:58,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518669323] [2019-11-07 00:51:58,983 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:51:58,983 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:58,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:51:58,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:51:58,983 INFO L87 Difference]: Start difference. First operand 1750 states and 2505 transitions. Second operand 12 states.