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_spec1_product15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:14:02,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:14:02,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:14:02,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:14:02,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:14:02,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:14:02,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:14:02,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:14:02,585 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:14:02,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:14:02,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:14:02,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:14:02,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:14:02,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:14:02,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:14:02,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:14:02,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:14:02,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:14:02,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:14:02,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:14:02,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:14:02,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:14:02,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:14:02,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:14:02,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:14:02,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:14:02,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:14:02,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:14:02,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:14:02,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:14:02,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:14:02,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:14:02,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:14:02,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:14:02,612 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:14:02,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:14:02,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:14:02,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:14:02,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:14:02,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:14:02,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:14:02,616 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 [2019-10-13 21:14:02,645 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:14:02,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:14:02,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:14:02,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:14:02,647 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:14:02,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:14:02,648 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:14:02,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:14:02,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:14:02,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:14:02,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:14:02,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:14:02,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:14:02,649 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:14:02,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:14:02,650 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:14:02,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:14:02,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:14:02,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:14:02,650 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:14:02,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:14:02,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:14:02,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:14:02,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:14:02,652 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:14:02,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:14:02,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:14:02,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:14:02,652 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 [2019-10-13 21:14:02,954 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:14:02,966 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:14:02,970 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:14:02,971 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:14:02,971 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:14:02,972 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec1_product15.cil.c [2019-10-13 21:14:03,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9c9f2a3d/d5e91c5e9e4c4419b6f5a4cf25ca898e/FLAG7e2877217 [2019-10-13 21:14:03,666 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:14:03,667 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product15.cil.c [2019-10-13 21:14:03,689 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9c9f2a3d/d5e91c5e9e4c4419b6f5a4cf25ca898e/FLAG7e2877217 [2019-10-13 21:14:03,934 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9c9f2a3d/d5e91c5e9e4c4419b6f5a4cf25ca898e [2019-10-13 21:14:03,945 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:14:03,947 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:14:03,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:03,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:14:03,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:14:03,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:03" (1/1) ... [2019-10-13 21:14:03,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ea49d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:03, skipping insertion in model container [2019-10-13 21:14:03,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:03" (1/1) ... [2019-10-13 21:14:03,961 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:14:04,042 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:14:04,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:04,786 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:14:04,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:05,039 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:14:05,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:05 WrapperNode [2019-10-13 21:14:05,040 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:05,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:14:05,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:14:05,041 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:14:05,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:05" (1/1) ... [2019-10-13 21:14:05,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:05" (1/1) ... [2019-10-13 21:14:05,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:05" (1/1) ... [2019-10-13 21:14:05,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:05" (1/1) ... [2019-10-13 21:14:05,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:05" (1/1) ... [2019-10-13 21:14:05,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:05" (1/1) ... [2019-10-13 21:14:05,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:05" (1/1) ... [2019-10-13 21:14:05,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:14:05,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:14:05,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:14:05,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:14:05,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:05" (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 [2019-10-13 21:14:05,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:14:05,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:14:05,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:05,295 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:14:05,296 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:14:05,296 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:14:05,297 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:14:05,297 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:14:05,297 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:14:05,298 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:14:05,298 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:14:05,298 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:14:05,298 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:14:05,298 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:14:05,299 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:14:05,299 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:14:05,300 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:14:05,300 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:14:05,301 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:14:05,301 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:14:05,301 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:14:05,302 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:14:05,302 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:14:05,302 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:14:05,302 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:14:05,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:14:05,303 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:14:05,303 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:14:05,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:14:05,303 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:14:05,303 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:14:05,303 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:14:05,303 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:14:05,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:14:05,304 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:14:05,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:14:05,304 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:14:05,304 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:14:05,304 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:14:05,305 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:14:05,305 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:14:05,305 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:14:05,305 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:14:05,305 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:14:05,305 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:14:05,305 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:14:05,306 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:14:05,306 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:14:05,306 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:14:05,306 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:14:05,306 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:14:05,306 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:14:05,306 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:14:05,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:14:05,306 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:14:05,307 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:14:05,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:14:05,307 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:14:05,307 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:14:05,307 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:14:05,307 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:14:05,307 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:14:05,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:14:05,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:05,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:14:05,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:05,308 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:14:05,309 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:14:05,309 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:14:05,309 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:14:05,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:14:05,309 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:14:05,310 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:14:05,310 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:14:05,310 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:14:05,310 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:14:05,310 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:14:05,311 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:14:05,311 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:14:05,311 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:14:05,311 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:14:05,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:05,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:05,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:05,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:14:05,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:14:05,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:14:05,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__AddressBookEncrypt_spec__1 [2019-10-13 21:14:05,313 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:14:05,313 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:14:05,313 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:14:05,313 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:14:05,313 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:14:05,313 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AutoResponder [2019-10-13 21:14:05,314 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:14:05,314 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:14:05,314 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:14:05,314 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:14:05,314 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:14:05,315 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:14:05,315 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:14:05,315 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:14:05,315 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:14:05,315 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:14:05,315 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:14:05,316 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:14:05,316 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:14:05,316 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:14:05,316 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:14:05,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:14:05,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:14:05,317 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:14:05,317 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:14:05,317 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:14:05,317 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:14:05,317 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:14:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:14:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:14:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:14:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:14:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:14:05,319 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:14:05,319 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:14:05,319 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:14:05,319 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:14:05,319 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:14:05,319 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:14:05,320 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:14:05,320 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:14:05,320 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:14:05,320 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:14:05,320 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:14:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:14:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:14:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:14:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:14:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:14:05,322 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:14:05,322 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:14:05,322 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:14:05,322 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:14:05,322 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:14:05,322 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:14:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:14:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:14:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:14:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:14:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:14:05,324 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:14:05,324 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:14:05,324 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:14:05,324 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:14:05,324 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:14:05,324 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:14:05,325 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:14:05,325 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:14:05,325 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:14:05,325 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:14:05,325 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:14:05,325 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:14:05,325 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:14:05,326 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:14:05,326 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:14:05,326 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:14:05,326 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:14:05,326 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:14:05,326 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:14:05,326 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:14:05,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:14:05,327 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:14:05,327 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:14:05,327 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:14:05,327 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:14:05,327 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:14:05,327 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:14:05,327 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:14:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:14:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:14:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:14:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:14:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:14:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:14:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:14:05,328 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:14:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:14:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:14:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:14:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:14:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:14:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:14:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:14:05,329 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:14:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:14:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:14:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:14:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:14:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:14:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:14:05,330 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:14:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:14:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:14:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:14:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:14:05,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:14:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:14:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:14:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:14:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:14:05,332 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:14:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:14:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:14:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__AddressBookEncrypt_spec__1 [2019-10-13 21:14:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:14:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:14:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:14:05,333 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:14:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:14:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:14:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:14:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:14:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:14:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AutoResponder [2019-10-13 21:14:05,334 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:14:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:14:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:14:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:14:05,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:14:07,445 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:14:07,446 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:14:07,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:07 BoogieIcfgContainer [2019-10-13 21:14:07,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:14:07,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:14:07,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:14:07,453 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:14:07,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:14:03" (1/3) ... [2019-10-13 21:14:07,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20526b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:07, skipping insertion in model container [2019-10-13 21:14:07,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:05" (2/3) ... [2019-10-13 21:14:07,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20526b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:07, skipping insertion in model container [2019-10-13 21:14:07,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:07" (3/3) ... [2019-10-13 21:14:07,458 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec1_product15.cil.c [2019-10-13 21:14:07,469 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:14:07,479 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:14:07,491 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:14:07,523 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:14:07,523 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:14:07,524 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:14:07,524 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:14:07,524 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:14:07,524 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:14:07,524 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:14:07,524 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:14:07,555 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states. [2019-10-13 21:14:07,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-13 21:14:07,575 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:07,577 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] [2019-10-13 21:14:07,579 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:07,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:07,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1912918606, now seen corresponding path program 1 times [2019-10-13 21:14:07,596 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:07,596 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910801007] [2019-10-13 21:14:07,597 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:07,597 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:07,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:08,200 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:08,201 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910801007] [2019-10-13 21:14:08,208 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:08,209 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:14:08,209 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585098447] [2019-10-13 21:14:08,216 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:14:08,218 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:08,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:14:08,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:14:08,239 INFO L87 Difference]: Start difference. First operand 466 states. Second operand 2 states. [2019-10-13 21:14:08,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:08,354 INFO L93 Difference]: Finished difference Result 626 states and 831 transitions. [2019-10-13 21:14:08,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:14:08,355 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 145 [2019-10-13 21:14:08,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:08,391 INFO L225 Difference]: With dead ends: 626 [2019-10-13 21:14:08,391 INFO L226 Difference]: Without dead ends: 419 [2019-10-13 21:14:08,402 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 [2019-10-13 21:14:08,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2019-10-13 21:14:08,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 419. [2019-10-13 21:14:08,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2019-10-13 21:14:08,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 560 transitions. [2019-10-13 21:14:08,541 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 560 transitions. Word has length 145 [2019-10-13 21:14:08,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:08,545 INFO L462 AbstractCegarLoop]: Abstraction has 419 states and 560 transitions. [2019-10-13 21:14:08,545 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:14:08,545 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 560 transitions. [2019-10-13 21:14:08,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-13 21:14:08,558 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:08,559 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] [2019-10-13 21:14:08,559 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:08,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:08,560 INFO L82 PathProgramCache]: Analyzing trace with hash 446933030, now seen corresponding path program 1 times [2019-10-13 21:14:08,560 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:08,562 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001692620] [2019-10-13 21:14:08,563 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:08,563 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:08,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:08,827 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:08,827 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001692620] [2019-10-13 21:14:08,828 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:08,828 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:08,828 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849301965] [2019-10-13 21:14:08,830 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:08,831 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:08,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:08,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:08,831 INFO L87 Difference]: Start difference. First operand 419 states and 560 transitions. Second operand 3 states. [2019-10-13 21:14:08,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:08,875 INFO L93 Difference]: Finished difference Result 609 states and 800 transitions. [2019-10-13 21:14:08,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:08,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2019-10-13 21:14:08,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:08,880 INFO L225 Difference]: With dead ends: 609 [2019-10-13 21:14:08,880 INFO L226 Difference]: Without dead ends: 422 [2019-10-13 21:14:08,882 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 [2019-10-13 21:14:08,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2019-10-13 21:14:08,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 421. [2019-10-13 21:14:08,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2019-10-13 21:14:08,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 562 transitions. [2019-10-13 21:14:08,930 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 562 transitions. Word has length 146 [2019-10-13 21:14:08,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:08,931 INFO L462 AbstractCegarLoop]: Abstraction has 421 states and 562 transitions. [2019-10-13 21:14:08,931 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:08,931 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 562 transitions. [2019-10-13 21:14:08,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-10-13 21:14:08,934 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:08,934 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] [2019-10-13 21:14:08,934 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:08,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:08,935 INFO L82 PathProgramCache]: Analyzing trace with hash -874845866, now seen corresponding path program 1 times [2019-10-13 21:14:08,935 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:08,935 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021239665] [2019-10-13 21:14:08,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:08,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:08,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:09,106 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:09,107 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021239665] [2019-10-13 21:14:09,107 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:09,107 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:09,107 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532771158] [2019-10-13 21:14:09,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:09,112 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:09,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:09,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:09,113 INFO L87 Difference]: Start difference. First operand 421 states and 562 transitions. Second operand 3 states. [2019-10-13 21:14:09,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:09,167 INFO L93 Difference]: Finished difference Result 818 states and 1122 transitions. [2019-10-13 21:14:09,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:09,167 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2019-10-13 21:14:09,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:09,173 INFO L225 Difference]: With dead ends: 818 [2019-10-13 21:14:09,174 INFO L226 Difference]: Without dead ends: 462 [2019-10-13 21:14:09,175 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 [2019-10-13 21:14:09,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2019-10-13 21:14:09,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 461. [2019-10-13 21:14:09,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2019-10-13 21:14:09,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 631 transitions. [2019-10-13 21:14:09,239 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 631 transitions. Word has length 156 [2019-10-13 21:14:09,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:09,240 INFO L462 AbstractCegarLoop]: Abstraction has 461 states and 631 transitions. [2019-10-13 21:14:09,240 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:09,240 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 631 transitions. [2019-10-13 21:14:09,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-13 21:14:09,244 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:09,244 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] [2019-10-13 21:14:09,244 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:09,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:09,245 INFO L82 PathProgramCache]: Analyzing trace with hash -724570560, now seen corresponding path program 1 times [2019-10-13 21:14:09,245 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:09,245 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190775985] [2019-10-13 21:14:09,245 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:09,246 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:09,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:09,369 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:09,369 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190775985] [2019-10-13 21:14:09,369 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:09,370 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:09,370 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346143953] [2019-10-13 21:14:09,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:09,373 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:09,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:09,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:09,373 INFO L87 Difference]: Start difference. First operand 461 states and 631 transitions. Second operand 3 states. [2019-10-13 21:14:09,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:09,417 INFO L93 Difference]: Finished difference Result 935 states and 1324 transitions. [2019-10-13 21:14:09,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:09,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2019-10-13 21:14:09,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:09,430 INFO L225 Difference]: With dead ends: 935 [2019-10-13 21:14:09,430 INFO L226 Difference]: Without dead ends: 539 [2019-10-13 21:14:09,432 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 [2019-10-13 21:14:09,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2019-10-13 21:14:09,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 538. [2019-10-13 21:14:09,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2019-10-13 21:14:09,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 763 transitions. [2019-10-13 21:14:09,476 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 763 transitions. Word has length 157 [2019-10-13 21:14:09,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:09,476 INFO L462 AbstractCegarLoop]: Abstraction has 538 states and 763 transitions. [2019-10-13 21:14:09,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:09,477 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 763 transitions. [2019-10-13 21:14:09,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 21:14:09,484 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:09,484 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] [2019-10-13 21:14:09,484 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:09,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:09,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1753586442, now seen corresponding path program 1 times [2019-10-13 21:14:09,485 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:09,485 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920047322] [2019-10-13 21:14:09,486 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:09,486 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:09,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:09,659 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:09,660 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920047322] [2019-10-13 21:14:09,660 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:09,661 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:09,661 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866543629] [2019-10-13 21:14:09,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:09,662 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:09,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:09,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:09,663 INFO L87 Difference]: Start difference. First operand 538 states and 763 transitions. Second operand 3 states. [2019-10-13 21:14:09,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:09,718 INFO L93 Difference]: Finished difference Result 1160 states and 1710 transitions. [2019-10-13 21:14:09,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:09,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2019-10-13 21:14:09,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:09,730 INFO L225 Difference]: With dead ends: 1160 [2019-10-13 21:14:09,731 INFO L226 Difference]: Without dead ends: 687 [2019-10-13 21:14:09,733 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 [2019-10-13 21:14:09,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2019-10-13 21:14:09,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 686. [2019-10-13 21:14:09,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 686 states. [2019-10-13 21:14:09,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 1015 transitions. [2019-10-13 21:14:09,793 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 1015 transitions. Word has length 158 [2019-10-13 21:14:09,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:09,795 INFO L462 AbstractCegarLoop]: Abstraction has 686 states and 1015 transitions. [2019-10-13 21:14:09,795 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:09,795 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 1015 transitions. [2019-10-13 21:14:09,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 21:14:09,802 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:09,803 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] [2019-10-13 21:14:09,803 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:09,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:09,804 INFO L82 PathProgramCache]: Analyzing trace with hash -862283104, now seen corresponding path program 1 times [2019-10-13 21:14:09,804 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:09,804 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059162502] [2019-10-13 21:14:09,805 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:09,805 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:09,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:10,125 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:10,126 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059162502] [2019-10-13 21:14:10,126 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:10,127 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:10,127 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859012382] [2019-10-13 21:14:10,127 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:10,128 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:10,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:10,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:10,129 INFO L87 Difference]: Start difference. First operand 686 states and 1015 transitions. Second operand 3 states. [2019-10-13 21:14:10,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:10,207 INFO L93 Difference]: Finished difference Result 1592 states and 2446 transitions. [2019-10-13 21:14:10,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:10,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-10-13 21:14:10,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:10,219 INFO L225 Difference]: With dead ends: 1592 [2019-10-13 21:14:10,220 INFO L226 Difference]: Without dead ends: 971 [2019-10-13 21:14:10,224 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 [2019-10-13 21:14:10,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2019-10-13 21:14:10,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 970. [2019-10-13 21:14:10,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2019-10-13 21:14:10,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1495 transitions. [2019-10-13 21:14:10,285 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1495 transitions. Word has length 159 [2019-10-13 21:14:10,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:10,287 INFO L462 AbstractCegarLoop]: Abstraction has 970 states and 1495 transitions. [2019-10-13 21:14:10,288 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:10,288 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1495 transitions. [2019-10-13 21:14:10,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 21:14:10,294 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:10,295 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] [2019-10-13 21:14:10,295 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:10,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:10,296 INFO L82 PathProgramCache]: Analyzing trace with hash -152708534, now seen corresponding path program 1 times [2019-10-13 21:14:10,296 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:10,296 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178825968] [2019-10-13 21:14:10,296 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:10,297 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:10,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:11,434 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-13 21:14:11,435 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178825968] [2019-10-13 21:14:11,435 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:11,435 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2019-10-13 21:14:11,435 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765661231] [2019-10-13 21:14:11,436 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-10-13 21:14:11,436 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:11,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-10-13 21:14:11,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1105, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:14:11,437 INFO L87 Difference]: Start difference. First operand 970 states and 1495 transitions. Second operand 35 states. [2019-10-13 21:14:16,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:16,329 INFO L93 Difference]: Finished difference Result 2852 states and 4510 transitions. [2019-10-13 21:14:16,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-10-13 21:14:16,329 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 162 [2019-10-13 21:14:16,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:16,350 INFO L225 Difference]: With dead ends: 2852 [2019-10-13 21:14:16,350 INFO L226 Difference]: Without dead ends: 1914 [2019-10-13 21:14:16,360 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=298, Invalid=4124, Unknown=0, NotChecked=0, Total=4422 [2019-10-13 21:14:16,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2019-10-13 21:14:16,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1702. [2019-10-13 21:14:16,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1702 states. [2019-10-13 21:14:16,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2765 transitions. [2019-10-13 21:14:16,478 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2765 transitions. Word has length 162 [2019-10-13 21:14:16,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:16,479 INFO L462 AbstractCegarLoop]: Abstraction has 1702 states and 2765 transitions. [2019-10-13 21:14:16,479 INFO L463 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-10-13 21:14:16,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2765 transitions. [2019-10-13 21:14:16,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-10-13 21:14:16,488 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:16,488 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-10-13 21:14:16,489 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:16,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:16,489 INFO L82 PathProgramCache]: Analyzing trace with hash 2122713605, now seen corresponding path program 1 times [2019-10-13 21:14:16,489 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:16,490 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424968837] [2019-10-13 21:14:16,490 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:16,490 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:16,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:16,649 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:16,649 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424968837] [2019-10-13 21:14:16,649 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:16,650 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:16,650 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148621027] [2019-10-13 21:14:16,650 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:16,651 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:16,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:16,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:16,651 INFO L87 Difference]: Start difference. First operand 1702 states and 2765 transitions. Second operand 3 states. [2019-10-13 21:14:16,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:16,794 INFO L93 Difference]: Finished difference Result 4414 states and 7344 transitions. [2019-10-13 21:14:16,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:16,795 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-10-13 21:14:16,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:16,824 INFO L225 Difference]: With dead ends: 4414 [2019-10-13 21:14:16,824 INFO L226 Difference]: Without dead ends: 2791 [2019-10-13 21:14:16,836 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 [2019-10-13 21:14:16,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2019-10-13 21:14:17,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2790. [2019-10-13 21:14:17,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2790 states. [2019-10-13 21:14:17,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2790 states to 2790 states and 4637 transitions. [2019-10-13 21:14:17,111 INFO L78 Accepts]: Start accepts. Automaton has 2790 states and 4637 transitions. Word has length 161 [2019-10-13 21:14:17,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:17,112 INFO L462 AbstractCegarLoop]: Abstraction has 2790 states and 4637 transitions. [2019-10-13 21:14:17,112 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:17,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2790 states and 4637 transitions. [2019-10-13 21:14:17,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-13 21:14:17,127 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:17,127 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-10-13 21:14:17,127 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:17,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:17,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1617484209, now seen corresponding path program 1 times [2019-10-13 21:14:17,128 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:17,128 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11563908] [2019-10-13 21:14:17,128 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:17,129 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:17,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:18,177 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:14:18,178 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11563908] [2019-10-13 21:14:18,180 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202009051] [2019-10-13 21:14:18,180 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 [2019-10-13 21:14:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:18,891 INFO L256 TraceCheckSpWp]: Trace formula consists of 2408 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:14:18,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:14:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:14:19,176 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:14:19,548 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:19,650 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:14:19,744 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:14:19,744 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:14:19,745 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [31, 7] total 39 [2019-10-13 21:14:19,745 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691416961] [2019-10-13 21:14:19,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:14:19,746 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:19,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:14:19,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1372, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:14:19,747 INFO L87 Difference]: Start difference. First operand 2790 states and 4637 transitions. Second operand 7 states. [2019-10-13 21:14:20,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:20,779 INFO L93 Difference]: Finished difference Result 5533 states and 9255 transitions. [2019-10-13 21:14:20,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:14:20,780 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2019-10-13 21:14:20,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:20,800 INFO L225 Difference]: With dead ends: 5533 [2019-10-13 21:14:20,801 INFO L226 Difference]: Without dead ends: 2794 [2019-10-13 21:14:20,823 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 320 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=128, Invalid=1512, Unknown=0, NotChecked=0, Total=1640 [2019-10-13 21:14:20,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2019-10-13 21:14:21,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 2794. [2019-10-13 21:14:21,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2794 states. [2019-10-13 21:14:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2794 states to 2794 states and 4642 transitions. [2019-10-13 21:14:21,124 INFO L78 Accepts]: Start accepts. Automaton has 2794 states and 4642 transitions. Word has length 164 [2019-10-13 21:14:21,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:21,124 INFO L462 AbstractCegarLoop]: Abstraction has 2794 states and 4642 transitions. [2019-10-13 21:14:21,124 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:14:21,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2794 states and 4642 transitions. [2019-10-13 21:14:21,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-13 21:14:21,140 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:21,140 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-13 21:14:21,350 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:14:21,350 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:21,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:21,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1071886407, now seen corresponding path program 1 times [2019-10-13 21:14:21,351 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:21,352 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036266275] [2019-10-13 21:14:21,352 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:21,352 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:21,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:22,176 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:14:22,178 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036266275] [2019-10-13 21:14:22,178 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:22,178 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-10-13 21:14:22,178 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707653741] [2019-10-13 21:14:22,180 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-13 21:14:22,185 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:22,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-13 21:14:22,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2019-10-13 21:14:22,186 INFO L87 Difference]: Start difference. First operand 2794 states and 4642 transitions. Second operand 26 states. [2019-10-13 21:14:29,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:29,881 INFO L93 Difference]: Finished difference Result 6314 states and 10216 transitions. [2019-10-13 21:14:29,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2019-10-13 21:14:29,882 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 165 [2019-10-13 21:14:29,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:29,929 INFO L225 Difference]: With dead ends: 6314 [2019-10-13 21:14:29,929 INFO L226 Difference]: Without dead ends: 6136 [2019-10-13 21:14:29,937 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1518 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=724, Invalid=5596, Unknown=0, NotChecked=0, Total=6320 [2019-10-13 21:14:29,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6136 states. [2019-10-13 21:14:30,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6136 to 5721. [2019-10-13 21:14:30,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5721 states. [2019-10-13 21:14:30,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5721 states to 5721 states and 9472 transitions. [2019-10-13 21:14:30,271 INFO L78 Accepts]: Start accepts. Automaton has 5721 states and 9472 transitions. Word has length 165 [2019-10-13 21:14:30,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:30,273 INFO L462 AbstractCegarLoop]: Abstraction has 5721 states and 9472 transitions. [2019-10-13 21:14:30,274 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-13 21:14:30,274 INFO L276 IsEmpty]: Start isEmpty. Operand 5721 states and 9472 transitions. [2019-10-13 21:14:30,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 21:14:30,296 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:30,297 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-13 21:14:30,297 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:30,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:30,297 INFO L82 PathProgramCache]: Analyzing trace with hash -667680481, now seen corresponding path program 1 times [2019-10-13 21:14:30,298 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:30,298 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716327716] [2019-10-13 21:14:30,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:30,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:30,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:30,552 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:14:30,553 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716327716] [2019-10-13 21:14:30,553 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:30,553 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:14:30,553 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45200694] [2019-10-13 21:14:30,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:14:30,554 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:30,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:14:30,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:14:30,555 INFO L87 Difference]: Start difference. First operand 5721 states and 9472 transitions. Second operand 5 states. [2019-10-13 21:14:31,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:31,598 INFO L93 Difference]: Finished difference Result 9891 states and 16263 transitions. [2019-10-13 21:14:31,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:14:31,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2019-10-13 21:14:31,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:31,663 INFO L225 Difference]: With dead ends: 9891 [2019-10-13 21:14:31,663 INFO L226 Difference]: Without dead ends: 9360 [2019-10-13 21:14:31,671 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:14:31,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9360 states. [2019-10-13 21:14:32,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9360 to 8078. [2019-10-13 21:14:32,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8078 states. [2019-10-13 21:14:32,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8078 states to 8078 states and 13219 transitions. [2019-10-13 21:14:32,126 INFO L78 Accepts]: Start accepts. Automaton has 8078 states and 13219 transitions. Word has length 166 [2019-10-13 21:14:32,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:32,126 INFO L462 AbstractCegarLoop]: Abstraction has 8078 states and 13219 transitions. [2019-10-13 21:14:32,126 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:14:32,126 INFO L276 IsEmpty]: Start isEmpty. Operand 8078 states and 13219 transitions. [2019-10-13 21:14:32,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 21:14:32,156 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:32,156 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-13 21:14:32,157 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:32,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:32,157 INFO L82 PathProgramCache]: Analyzing trace with hash 954220666, now seen corresponding path program 1 times [2019-10-13 21:14:32,157 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:32,158 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148165811] [2019-10-13 21:14:32,158 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:32,158 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:32,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:32,348 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:14:32,348 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148165811] [2019-10-13 21:14:32,349 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:32,349 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 21:14:32,349 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060437594] [2019-10-13 21:14:32,350 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 21:14:32,350 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:32,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 21:14:32,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:14:32,351 INFO L87 Difference]: Start difference. First operand 8078 states and 13219 transitions. Second operand 10 states. [2019-10-13 21:14:32,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:32,807 INFO L93 Difference]: Finished difference Result 9776 states and 15440 transitions. [2019-10-13 21:14:32,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:14:32,808 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2019-10-13 21:14:32,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:32,875 INFO L225 Difference]: With dead ends: 9776 [2019-10-13 21:14:32,875 INFO L226 Difference]: Without dead ends: 8159 [2019-10-13 21:14:32,885 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:14:32,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8159 states. [2019-10-13 21:14:33,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8159 to 8140. [2019-10-13 21:14:33,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8140 states. [2019-10-13 21:14:33,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8140 states to 8140 states and 13309 transitions. [2019-10-13 21:14:33,491 INFO L78 Accepts]: Start accepts. Automaton has 8140 states and 13309 transitions. Word has length 166 [2019-10-13 21:14:33,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:33,491 INFO L462 AbstractCegarLoop]: Abstraction has 8140 states and 13309 transitions. [2019-10-13 21:14:33,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 21:14:33,492 INFO L276 IsEmpty]: Start isEmpty. Operand 8140 states and 13309 transitions. [2019-10-13 21:14:33,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-10-13 21:14:33,529 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:33,530 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-13 21:14:33,530 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:33,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:33,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1617182974, now seen corresponding path program 1 times [2019-10-13 21:14:33,531 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:33,531 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602803710] [2019-10-13 21:14:33,531 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:33,531 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:33,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:33,752 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:14:33,752 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602803710] [2019-10-13 21:14:33,752 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:33,753 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 21:14:33,753 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944849052] [2019-10-13 21:14:33,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:14:33,754 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:33,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:14:33,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:14:33,755 INFO L87 Difference]: Start difference. First operand 8140 states and 13309 transitions. Second operand 9 states. [2019-10-13 21:14:34,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:34,125 INFO L93 Difference]: Finished difference Result 8518 states and 13795 transitions. [2019-10-13 21:14:34,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 21:14:34,125 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 166 [2019-10-13 21:14:34,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:34,138 INFO L225 Difference]: With dead ends: 8518 [2019-10-13 21:14:34,138 INFO L226 Difference]: Without dead ends: 3190 [2019-10-13 21:14:34,155 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:14:34,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states.