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_spec9_product21.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:18:03,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:18:03,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:18:03,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:18:03,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:18:03,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:18:03,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:18:03,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:18:03,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:18:03,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:18:03,541 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:18:03,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:18:03,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:18:03,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:18:03,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:18:03,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:18:03,552 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:18:03,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:18:03,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:18:03,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:18:03,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:18:03,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:18:03,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:18:03,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:18:03,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:18:03,574 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:18:03,575 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:18:03,576 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:18:03,578 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:18:03,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:18:03,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:18:03,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:18:03,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:18:03,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:18:03,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:18:03,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:18:03,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:18:03,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:18:03,585 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:18:03,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:18:03,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:18:03,587 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:18:03,616 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:18:03,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:18:03,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:18:03,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:18:03,618 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:18:03,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:18:03,619 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:18:03,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:18:03,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:18:03,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:18:03,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:18:03,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:18:03,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:18:03,620 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:18:03,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:18:03,620 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:18:03,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:18:03,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:18:03,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:18:03,621 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:18:03,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:18:03,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:18:03,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:18:03,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:18:03,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:18:03,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:18:03,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:18:03,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:18:03,623 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 [2019-10-15 01:18:03,899 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:18:03,914 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:18:03,919 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:18:03,920 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:18:03,920 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:18:03,921 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product21.cil.c [2019-10-15 01:18:04,005 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5422da5f/7c19c851056643b69096edc3091409b6/FLAG924a79c70 [2019-10-15 01:18:04,640 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:18:04,641 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product21.cil.c [2019-10-15 01:18:04,662 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5422da5f/7c19c851056643b69096edc3091409b6/FLAG924a79c70 [2019-10-15 01:18:04,800 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5422da5f/7c19c851056643b69096edc3091409b6 [2019-10-15 01:18:04,807 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:18:04,809 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:18:04,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:18:04,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:18:04,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:18:04,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:18:04" (1/1) ... [2019-10-15 01:18:04,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60aa197e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:04, skipping insertion in model container [2019-10-15 01:18:04,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:18:04" (1/1) ... [2019-10-15 01:18:04,828 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:18:04,908 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:18:05,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:18:05,693 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:18:05,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:18:05,930 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:18:05,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:05 WrapperNode [2019-10-15 01:18:05,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:18:05,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:18:05,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:18:05,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:18:05,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:05" (1/1) ... [2019-10-15 01:18:05,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:05" (1/1) ... [2019-10-15 01:18:06,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:05" (1/1) ... [2019-10-15 01:18:06,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:05" (1/1) ... [2019-10-15 01:18:06,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:05" (1/1) ... [2019-10-15 01:18:06,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:05" (1/1) ... [2019-10-15 01:18:06,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:05" (1/1) ... [2019-10-15 01:18:06,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:18:06,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:18:06,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:18:06,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:18:06,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:18:06,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:18:06,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:18:06,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:18:06,195 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:18:06,195 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:18:06,196 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-15 01:18:06,196 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:18:06,197 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:18:06,197 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-10-15 01:18:06,198 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:18:06,198 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:18:06,198 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:18:06,198 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:18:06,199 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:18:06,199 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:18:06,200 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:18:06,201 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:18:06,201 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:18:06,202 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:18:06,202 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-15 01:18:06,202 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:18:06,202 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:18:06,203 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:18:06,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:18:06,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:18:06,203 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:18:06,203 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:18:06,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:18:06,204 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:18:06,204 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:18:06,204 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:18:06,204 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:18:06,205 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:18:06,205 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:18:06,205 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:18:06,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:18:06,205 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:18:06,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:18:06,206 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:18:06,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:18:06,206 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:18:06,206 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:18:06,206 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:18:06,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:18:06,207 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:18:06,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:18:06,207 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:18:06,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:18:06,208 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:18:06,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:18:06,208 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:18:06,208 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:18:06,208 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:18:06,208 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:18:06,209 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:18:06,209 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:18:06,209 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:18:06,209 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:18:06,209 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:18:06,210 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:18:06,210 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:18:06,210 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:18:06,210 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:18:06,210 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:18:06,211 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:18:06,211 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:18:06,211 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:18:06,211 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:18:06,211 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:18:06,211 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:18:06,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:18:06,212 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:18:06,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:18:06,212 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:18:06,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:18:06,213 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:18:06,213 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:18:06,213 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:18:06,213 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:18:06,213 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:18:06,214 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:18:06,214 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:18:06,214 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:18:06,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-15 01:18:06,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-15 01:18:06,215 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:18:06,215 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:18:06,215 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:18:06,215 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:18:06,215 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:18:06,215 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:18:06,216 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:18:06,216 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:18:06,216 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:18:06,216 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:18:06,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:18:06,217 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:18:06,217 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:18:06,217 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:18:06,217 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:18:06,217 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:18:06,217 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:18:06,218 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:18:06,218 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:18:06,218 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:18:06,218 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-15 01:18:06,218 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:18:06,218 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:18:06,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:18:06,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:18:06,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:18:06,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:18:06,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:18:06,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:18:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:18:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:18:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:18:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:18:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:18:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:18:06,220 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:18:06,221 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:18:06,221 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:18:06,221 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:18:06,221 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:18:06,221 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:18:06,221 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:18:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:18:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:18:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:18:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:18:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:18:06,222 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:18:06,223 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:18:06,223 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:18:06,223 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:18:06,223 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:18:06,223 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:18:06,223 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:18:06,224 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:18:06,224 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:18:06,224 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:18:06,224 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:18:06,224 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:18:06,224 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:18:06,224 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:18:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-15 01:18:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:18:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-15 01:18:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:18:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:18:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-15 01:18:06,225 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-10-15 01:18:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:18:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-15 01:18:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:18:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:18:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:18:06,226 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:18:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:18:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:18:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:18:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:18:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:18:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:18:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:18:06,227 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:18:06,228 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:18:06,228 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:18:06,228 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:18:06,228 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:18:06,228 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:18:06,228 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:18:06,228 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:18:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:18:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:18:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:18:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:18:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:18:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:18:06,229 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:18:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:18:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:18:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:18:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:18:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:18:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:18:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:18:06,230 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:18:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:18:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:18:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:18:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:18:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:18:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:18:06,231 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:18:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:18:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:18:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:18:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:18:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:18:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:18:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:18:06,232 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:18:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:18:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:18:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-15 01:18:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:18:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:18:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:18:06,233 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:18:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:18:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:18:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:18:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:18:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:18:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:18:06,234 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:18:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:18:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:18:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:18:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:18:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:18:06,235 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:18:06,236 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:18:06,236 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:18:06,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:18:06,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:18:06,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:18:06,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:18:06,236 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:18:06,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:18:06,237 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:18:06,237 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:18:06,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:18:06,237 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:18:06,237 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:18:06,237 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:18:06,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:18:06,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:18:06,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:18:08,408 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:18:08,408 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:18:08,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:18:08 BoogieIcfgContainer [2019-10-15 01:18:08,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:18:08,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:18:08,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:18:08,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:18:08,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:18:04" (1/3) ... [2019-10-15 01:18:08,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678e90b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:18:08, skipping insertion in model container [2019-10-15 01:18:08,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:05" (2/3) ... [2019-10-15 01:18:08,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@678e90b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:18:08, skipping insertion in model container [2019-10-15 01:18:08,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:18:08" (3/3) ... [2019-10-15 01:18:08,421 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product21.cil.c [2019-10-15 01:18:08,431 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:18:08,441 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:18:08,454 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:18:08,491 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:18:08,491 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:18:08,491 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:18:08,491 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:18:08,491 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:18:08,491 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:18:08,492 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:18:08,492 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:18:08,533 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states. [2019-10-15 01:18:08,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-15 01:18:08,563 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:08,565 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:08,568 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:08,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:08,575 INFO L82 PathProgramCache]: Analyzing trace with hash 453120643, now seen corresponding path program 1 times [2019-10-15 01:18:08,592 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:08,593 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289447977] [2019-10-15 01:18:08,593 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:08,593 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:08,593 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:08,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:18:09,225 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289447977] [2019-10-15 01:18:09,226 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:09,226 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:18:09,227 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983695120] [2019-10-15 01:18:09,233 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:18:09,235 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:09,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:18:09,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:18:09,252 INFO L87 Difference]: Start difference. First operand 573 states. Second operand 2 states. [2019-10-15 01:18:09,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:09,375 INFO L93 Difference]: Finished difference Result 832 states and 1126 transitions. [2019-10-15 01:18:09,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:18:09,377 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 154 [2019-10-15 01:18:09,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:09,414 INFO L225 Difference]: With dead ends: 832 [2019-10-15 01:18:09,415 INFO L226 Difference]: Without dead ends: 544 [2019-10-15 01:18:09,426 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:18:09,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2019-10-15 01:18:09,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2019-10-15 01:18:09,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2019-10-15 01:18:09,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 742 transitions. [2019-10-15 01:18:09,563 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 742 transitions. Word has length 154 [2019-10-15 01:18:09,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:09,565 INFO L462 AbstractCegarLoop]: Abstraction has 544 states and 742 transitions. [2019-10-15 01:18:09,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:18:09,566 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 742 transitions. [2019-10-15 01:18:09,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-10-15 01:18:09,571 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:09,572 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:09,572 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:09,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:09,573 INFO L82 PathProgramCache]: Analyzing trace with hash 545011492, now seen corresponding path program 1 times [2019-10-15 01:18:09,573 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:09,573 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242341458] [2019-10-15 01:18:09,573 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:09,573 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:09,574 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:09,826 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:18:09,827 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242341458] [2019-10-15 01:18:09,827 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:09,827 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:09,827 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315127081] [2019-10-15 01:18:09,830 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:09,830 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:09,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:09,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:09,831 INFO L87 Difference]: Start difference. First operand 544 states and 742 transitions. Second operand 3 states. [2019-10-15 01:18:09,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:09,914 INFO L93 Difference]: Finished difference Result 815 states and 1092 transitions. [2019-10-15 01:18:09,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:09,915 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-10-15 01:18:09,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:09,926 INFO L225 Difference]: With dead ends: 815 [2019-10-15 01:18:09,927 INFO L226 Difference]: Without dead ends: 547 [2019-10-15 01:18:09,929 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:09,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2019-10-15 01:18:10,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 546. [2019-10-15 01:18:10,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2019-10-15 01:18:10,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 744 transitions. [2019-10-15 01:18:10,044 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 744 transitions. Word has length 155 [2019-10-15 01:18:10,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:10,045 INFO L462 AbstractCegarLoop]: Abstraction has 546 states and 744 transitions. [2019-10-15 01:18:10,045 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:10,046 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 744 transitions. [2019-10-15 01:18:10,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-15 01:18:10,054 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:10,054 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:10,055 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:10,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:10,055 INFO L82 PathProgramCache]: Analyzing trace with hash -35318856, now seen corresponding path program 1 times [2019-10-15 01:18:10,056 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:10,056 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524553437] [2019-10-15 01:18:10,057 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:10,057 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:10,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:18:10,407 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524553437] [2019-10-15 01:18:10,407 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:10,407 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:10,408 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609924210] [2019-10-15 01:18:10,408 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:10,411 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:10,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:10,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:10,411 INFO L87 Difference]: Start difference. First operand 546 states and 744 transitions. Second operand 3 states. [2019-10-15 01:18:10,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:10,454 INFO L93 Difference]: Finished difference Result 1070 states and 1489 transitions. [2019-10-15 01:18:10,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:10,455 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-15 01:18:10,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:10,461 INFO L225 Difference]: With dead ends: 1070 [2019-10-15 01:18:10,462 INFO L226 Difference]: Without dead ends: 589 [2019-10-15 01:18:10,464 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:10,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2019-10-15 01:18:10,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 588. [2019-10-15 01:18:10,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2019-10-15 01:18:10,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 816 transitions. [2019-10-15 01:18:10,499 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 816 transitions. Word has length 161 [2019-10-15 01:18:10,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:10,501 INFO L462 AbstractCegarLoop]: Abstraction has 588 states and 816 transitions. [2019-10-15 01:18:10,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:10,501 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 816 transitions. [2019-10-15 01:18:10,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-15 01:18:10,508 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:10,509 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:10,509 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:10,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:10,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1484385575, now seen corresponding path program 1 times [2019-10-15 01:18:10,510 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:10,510 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134705557] [2019-10-15 01:18:10,510 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:10,514 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:10,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:10,762 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:18:10,763 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134705557] [2019-10-15 01:18:10,763 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:10,763 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:10,763 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703827598] [2019-10-15 01:18:10,766 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:10,767 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:10,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:10,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:10,768 INFO L87 Difference]: Start difference. First operand 588 states and 816 transitions. Second operand 3 states. [2019-10-15 01:18:10,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:10,813 INFO L93 Difference]: Finished difference Result 957 states and 1317 transitions. [2019-10-15 01:18:10,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:10,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-10-15 01:18:10,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:10,819 INFO L225 Difference]: With dead ends: 957 [2019-10-15 01:18:10,819 INFO L226 Difference]: Without dead ends: 702 [2019-10-15 01:18:10,821 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:10,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2019-10-15 01:18:10,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 701. [2019-10-15 01:18:10,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2019-10-15 01:18:10,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 978 transitions. [2019-10-15 01:18:10,900 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 978 transitions. Word has length 162 [2019-10-15 01:18:10,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:10,901 INFO L462 AbstractCegarLoop]: Abstraction has 701 states and 978 transitions. [2019-10-15 01:18:10,901 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:10,901 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 978 transitions. [2019-10-15 01:18:10,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2019-10-15 01:18:10,911 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:10,911 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 01:18:10,912 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:10,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:10,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1253289974, now seen corresponding path program 1 times [2019-10-15 01:18:10,912 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:10,913 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473973250] [2019-10-15 01:18:10,913 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:10,913 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:10,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:11,228 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:18:11,231 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473973250] [2019-10-15 01:18:11,231 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:11,231 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 01:18:11,232 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350197308] [2019-10-15 01:18:11,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:18:11,233 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:11,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:18:11,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:18:11,234 INFO L87 Difference]: Start difference. First operand 701 states and 978 transitions. Second operand 6 states. [2019-10-15 01:18:12,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:12,063 INFO L93 Difference]: Finished difference Result 1710 states and 2381 transitions. [2019-10-15 01:18:12,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:18:12,064 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 286 [2019-10-15 01:18:12,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:12,073 INFO L225 Difference]: With dead ends: 1710 [2019-10-15 01:18:12,073 INFO L226 Difference]: Without dead ends: 1353 [2019-10-15 01:18:12,075 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:18:12,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2019-10-15 01:18:12,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1342. [2019-10-15 01:18:12,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1342 states. [2019-10-15 01:18:12,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1342 states to 1342 states and 1892 transitions. [2019-10-15 01:18:12,133 INFO L78 Accepts]: Start accepts. Automaton has 1342 states and 1892 transitions. Word has length 286 [2019-10-15 01:18:12,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:12,133 INFO L462 AbstractCegarLoop]: Abstraction has 1342 states and 1892 transitions. [2019-10-15 01:18:12,134 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:18:12,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1342 states and 1892 transitions. [2019-10-15 01:18:12,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2019-10-15 01:18:12,142 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:12,143 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:12,143 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:12,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:12,143 INFO L82 PathProgramCache]: Analyzing trace with hash 932243253, now seen corresponding path program 1 times [2019-10-15 01:18:12,144 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:12,144 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565419944] [2019-10-15 01:18:12,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:12,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:12,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:12,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:12,431 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:18:12,432 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565419944] [2019-10-15 01:18:12,432 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:12,432 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 01:18:12,432 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939289692] [2019-10-15 01:18:12,433 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:18:12,433 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:12,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:18:12,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:18:12,434 INFO L87 Difference]: Start difference. First operand 1342 states and 1892 transitions. Second operand 9 states. [2019-10-15 01:18:12,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:12,801 INFO L93 Difference]: Finished difference Result 2053 states and 2833 transitions. [2019-10-15 01:18:12,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:18:12,802 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 287 [2019-10-15 01:18:12,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:12,810 INFO L225 Difference]: With dead ends: 2053 [2019-10-15 01:18:12,810 INFO L226 Difference]: Without dead ends: 1316 [2019-10-15 01:18:12,816 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:18:12,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1316 states. [2019-10-15 01:18:12,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1316 to 1312. [2019-10-15 01:18:12,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1312 states. [2019-10-15 01:18:12,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 1841 transitions. [2019-10-15 01:18:12,891 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 1841 transitions. Word has length 287 [2019-10-15 01:18:12,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:12,892 INFO L462 AbstractCegarLoop]: Abstraction has 1312 states and 1841 transitions. [2019-10-15 01:18:12,892 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:18:12,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 1841 transitions. [2019-10-15 01:18:12,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2019-10-15 01:18:12,902 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:12,902 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 01:18:12,902 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:12,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:12,903 INFO L82 PathProgramCache]: Analyzing trace with hash 2088054668, now seen corresponding path program 1 times [2019-10-15 01:18:12,903 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:12,903 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084012391] [2019-10-15 01:18:12,904 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:12,904 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:12,904 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:13,442 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 01:18:13,443 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084012391] [2019-10-15 01:18:13,443 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077167410] [2019-10-15 01:18:13,443 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 [2019-10-15 01:18:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:14,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 3291 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:18:14,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:14,622 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-15 01:18:14,622 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:15,261 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:18:15,360 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:15,518 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:15,697 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:18:15,698 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:18:15,698 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-15 01:18:15,698 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464882967] [2019-10-15 01:18:15,699 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:18:15,699 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:15,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:18:15,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:18:15,700 INFO L87 Difference]: Start difference. First operand 1312 states and 1841 transitions. Second operand 9 states. [2019-10-15 01:18:18,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:18,040 INFO L93 Difference]: Finished difference Result 2602 states and 3662 transitions. [2019-10-15 01:18:18,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:18:18,040 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 280 [2019-10-15 01:18:18,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:18,048 INFO L225 Difference]: With dead ends: 2602 [2019-10-15 01:18:18,048 INFO L226 Difference]: Without dead ends: 1326 [2019-10-15 01:18:18,054 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 589 GetRequests, 549 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-15 01:18:18,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2019-10-15 01:18:18,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1326. [2019-10-15 01:18:18,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1326 states. [2019-10-15 01:18:18,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1859 transitions. [2019-10-15 01:18:18,165 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1859 transitions. Word has length 280 [2019-10-15 01:18:18,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:18,165 INFO L462 AbstractCegarLoop]: Abstraction has 1326 states and 1859 transitions. [2019-10-15 01:18:18,165 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:18:18,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1859 transitions. [2019-10-15 01:18:18,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2019-10-15 01:18:18,175 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:18,175 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 01:18:18,394 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:18,394 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:18,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:18,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1941581107, now seen corresponding path program 1 times [2019-10-15 01:18:18,395 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:18,395 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719113841] [2019-10-15 01:18:18,395 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:18,395 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:18,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 01:18:19,059 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719113841] [2019-10-15 01:18:19,060 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476984180] [2019-10-15 01:18:19,060 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 [2019-10-15 01:18:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:19,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 3292 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:18:19,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:19,988 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-15 01:18:19,988 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:20,517 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:20,587 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:20,667 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:18:20,667 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:18:20,667 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-15 01:18:20,668 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435965258] [2019-10-15 01:18:20,668 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:18:20,669 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:20,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:18:20,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:18:20,670 INFO L87 Difference]: Start difference. First operand 1326 states and 1859 transitions. Second operand 7 states. [2019-10-15 01:18:22,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:22,120 INFO L93 Difference]: Finished difference Result 2605 states and 3671 transitions. [2019-10-15 01:18:22,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:18:22,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2019-10-15 01:18:22,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:22,129 INFO L225 Difference]: With dead ends: 2605 [2019-10-15 01:18:22,130 INFO L226 Difference]: Without dead ends: 1330 [2019-10-15 01:18:22,135 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 556 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:18:22,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2019-10-15 01:18:22,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1330. [2019-10-15 01:18:22,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1330 states. [2019-10-15 01:18:22,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1864 transitions. [2019-10-15 01:18:22,201 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1864 transitions. Word has length 281 [2019-10-15 01:18:22,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:22,201 INFO L462 AbstractCegarLoop]: Abstraction has 1330 states and 1864 transitions. [2019-10-15 01:18:22,201 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:18:22,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1864 transitions. [2019-10-15 01:18:22,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2019-10-15 01:18:22,210 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:22,210 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 01:18:22,420 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:22,421 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:22,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:22,421 INFO L82 PathProgramCache]: Analyzing trace with hash 949543953, now seen corresponding path program 1 times [2019-10-15 01:18:22,421 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:22,422 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958276145] [2019-10-15 01:18:22,422 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:22,422 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:22,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-10-15 01:18:22,925 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958276145] [2019-10-15 01:18:22,925 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463396150] [2019-10-15 01:18:22,925 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 [2019-10-15 01:18:23,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:23,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 3293 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:18:23,759 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:23,999 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-15 01:18:24,000 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:24,533 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:18:24,620 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:24,704 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:24,848 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:18:24,848 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:24,849 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-15 01:18:24,849 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901425630] [2019-10-15 01:18:24,850 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:18:24,851 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:24,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:18:24,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-15 01:18:24,852 INFO L87 Difference]: Start difference. First operand 1330 states and 1864 transitions. Second operand 16 states. [2019-10-15 01:18:26,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:26,931 INFO L93 Difference]: Finished difference Result 2611 states and 3670 transitions. [2019-10-15 01:18:26,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:18:26,931 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 282 [2019-10-15 01:18:26,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:26,945 INFO L225 Difference]: With dead ends: 2611 [2019-10-15 01:18:26,946 INFO L226 Difference]: Without dead ends: 1342 [2019-10-15 01:18:26,956 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 553 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-15 01:18:26,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2019-10-15 01:18:27,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1340. [2019-10-15 01:18:27,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2019-10-15 01:18:27,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1875 transitions. [2019-10-15 01:18:27,024 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1875 transitions. Word has length 282 [2019-10-15 01:18:27,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:27,025 INFO L462 AbstractCegarLoop]: Abstraction has 1340 states and 1875 transitions. [2019-10-15 01:18:27,025 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:18:27,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1875 transitions. [2019-10-15 01:18:27,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2019-10-15 01:18:27,031 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:27,031 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 01:18:27,243 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:27,243 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:27,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:27,244 INFO L82 PathProgramCache]: Analyzing trace with hash -784838164, now seen corresponding path program 2 times [2019-10-15 01:18:27,244 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:27,244 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916934290] [2019-10-15 01:18:27,245 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:27,245 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:27,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:27,717 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-10-15 01:18:27,718 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916934290] [2019-10-15 01:18:27,718 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284166512] [2019-10-15 01:18:27,718 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 [2019-10-15 01:18:28,411 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:18:28,411 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:18:28,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 2474 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:18:28,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:28,634 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-15 01:18:28,635 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:29,122 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:29,197 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-15 01:18:29,282 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:29,282 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-15 01:18:29,282 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536176473] [2019-10-15 01:18:29,283 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:18:29,284 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:29,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:18:29,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:18:29,285 INFO L87 Difference]: Start difference. First operand 1340 states and 1875 transitions. Second operand 12 states. [2019-10-15 01:18:30,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:30,285 INFO L93 Difference]: Finished difference Result 2602 states and 3658 transitions. [2019-10-15 01:18:30,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:18:30,286 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 283 [2019-10-15 01:18:30,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:30,297 INFO L225 Difference]: With dead ends: 2602 [2019-10-15 01:18:30,297 INFO L226 Difference]: Without dead ends: 1342 [2019-10-15 01:18:30,304 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 595 GetRequests, 560 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:18:30,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2019-10-15 01:18:30,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1340. [2019-10-15 01:18:30,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2019-10-15 01:18:30,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1874 transitions. [2019-10-15 01:18:30,433 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1874 transitions. Word has length 283 [2019-10-15 01:18:30,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:30,434 INFO L462 AbstractCegarLoop]: Abstraction has 1340 states and 1874 transitions. [2019-10-15 01:18:30,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:18:30,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1874 transitions. [2019-10-15 01:18:30,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2019-10-15 01:18:30,439 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:30,440 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 01:18:30,657 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:30,657 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:30,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:30,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1187796340, now seen corresponding path program 3 times [2019-10-15 01:18:30,658 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:30,658 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219247523] [2019-10-15 01:18:30,658 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:30,658 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:30,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:31,118 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:18:31,119 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219247523] [2019-10-15 01:18:31,119 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201512002] [2019-10-15 01:18:31,119 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2019-10-15 01:18:31,751 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-15 01:18:31,752 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:18:31,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 2637 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:18:31,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-15 01:18:31,987 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:32,567 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:18:32,650 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:32,748 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:32,912 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-15 01:18:32,912 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:32,912 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-10-15 01:18:32,912 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997751572] [2019-10-15 01:18:32,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:18:32,913 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:32,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:18:32,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:18:32,914 INFO L87 Difference]: Start difference. First operand 1340 states and 1874 transitions. Second operand 15 states. [2019-10-15 01:18:34,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:34,765 INFO L93 Difference]: Finished difference Result 2609 states and 3665 transitions. [2019-10-15 01:18:34,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:18:34,766 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 284 [2019-10-15 01:18:34,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:34,776 INFO L225 Difference]: With dead ends: 2609 [2019-10-15 01:18:34,777 INFO L226 Difference]: Without dead ends: 1344 [2019-10-15 01:18:34,781 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 557 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-10-15 01:18:34,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2019-10-15 01:18:34,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1340. [2019-10-15 01:18:34,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2019-10-15 01:18:34,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 1873 transitions. [2019-10-15 01:18:34,835 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 1873 transitions. Word has length 284 [2019-10-15 01:18:34,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:34,836 INFO L462 AbstractCegarLoop]: Abstraction has 1340 states and 1873 transitions. [2019-10-15 01:18:34,836 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:18:34,836 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 1873 transitions. [2019-10-15 01:18:34,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2019-10-15 01:18:34,841 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:34,842 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:35,048 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:35,048 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:35,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:35,049 INFO L82 PathProgramCache]: Analyzing trace with hash 553686700, now seen corresponding path program 1 times [2019-10-15 01:18:35,049 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:35,049 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921019485] [2019-10-15 01:18:35,049 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:35,049 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:35,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:35,466 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-10-15 01:18:35,466 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921019485] [2019-10-15 01:18:35,467 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136177765] [2019-10-15 01:18:35,467 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 [2019-10-15 01:18:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:36,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 3296 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:18:36,238 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:36,406 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-15 01:18:36,406 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:36,883 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:36,946 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:37,014 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-15 01:18:37,014 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:37,015 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 31 [2019-10-15 01:18:37,015 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766310181] [2019-10-15 01:18:37,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:18:37,016 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:37,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:18:37,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:18:37,017 INFO L87 Difference]: Start difference. First operand 1340 states and 1873 transitions. Second operand 11 states.