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_spec11_product15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:13:28,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:13:28,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:13:28,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:13:28,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:13:28,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:13:28,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:13:28,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:13:28,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:13:28,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:13:28,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:13:28,801 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:13:28,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:13:28,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:13:28,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:13:28,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:13:28,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:13:28,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:13:28,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:13:28,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:13:28,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:13:28,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:13:28,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:13:28,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:13:28,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:13:28,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:13:28,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:13:28,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:13:28,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:13:28,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:13:28,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:13:28,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:13:28,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:13:28,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:13:28,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:13:28,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:13:28,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:13:28,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:13:28,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:13:28,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:13:28,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:13:28,844 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 21:13:28,869 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:13:28,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:13:28,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:13:28,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:13:28,873 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:13:28,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:13:28,873 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:13:28,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:13:28,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:13:28,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:13:28,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:13:28,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:13:28,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:13:28,874 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:13:28,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:13:28,875 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:13:28,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:13:28,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:13:28,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:13:28,877 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:13:28,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:13:28,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:13:28,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:13:28,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:13:28,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:13:28,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:13:28,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:13:28,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:13:28,882 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 21:13:29,148 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:13:29,164 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:13:29,168 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:13:29,169 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:13:29,169 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:13:29,170 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product15.cil.c [2019-10-13 21:13:29,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07456ea54/536d08a8d47843dd9ecc83cb3a72be03/FLAGf32355299 [2019-10-13 21:13:29,831 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:13:29,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product15.cil.c [2019-10-13 21:13:29,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07456ea54/536d08a8d47843dd9ecc83cb3a72be03/FLAGf32355299 [2019-10-13 21:13:30,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07456ea54/536d08a8d47843dd9ecc83cb3a72be03 [2019-10-13 21:13:30,075 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:13:30,077 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:13:30,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:13:30,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:13:30,081 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:13:30,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:13:30" (1/1) ... [2019-10-13 21:13:30,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3264c97a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:30, skipping insertion in model container [2019-10-13 21:13:30,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:13:30" (1/1) ... [2019-10-13 21:13:30,091 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:13:30,171 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:13:30,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:13:30,923 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:13:31,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:13:31,127 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:13:31,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:31 WrapperNode [2019-10-13 21:13:31,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:13:31,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:13:31,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:13:31,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:13:31,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:31" (1/1) ... [2019-10-13 21:13:31,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:31" (1/1) ... [2019-10-13 21:13:31,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:31" (1/1) ... [2019-10-13 21:13:31,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:31" (1/1) ... [2019-10-13 21:13:31,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:31" (1/1) ... [2019-10-13 21:13:31,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:31" (1/1) ... [2019-10-13 21:13:31,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:31" (1/1) ... [2019-10-13 21:13:31,318 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:13:31,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:13:31,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:13:31,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:13:31,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:31" (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 21:13:31,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:13:31,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:13:31,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:13:31,384 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:13:31,385 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:13:31,385 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:13:31,385 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:13:31,385 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:13:31,385 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:13:31,386 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:13:31,386 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:13:31,386 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:13:31,386 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:13:31,386 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:13:31,387 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:13:31,387 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:13:31,387 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:13:31,387 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:13:31,388 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:13:31,388 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:13:31,388 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:13:31,388 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:13:31,389 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:13:31,389 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:13:31,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__DecryptAutoResponder_spec__1 [2019-10-13 21:13:31,389 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:13:31,389 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:13:31,389 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:13:31,390 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:13:31,390 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:13:31,390 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AutoResponder [2019-10-13 21:13:31,390 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:13:31,390 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:13:31,390 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:13:31,390 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:13:31,391 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:13:31,391 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:13:31,391 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:13:31,391 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:13:31,391 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:13:31,392 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:13:31,392 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:13:31,392 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:13:31,392 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:13:31,392 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:13:31,392 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:13:31,393 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:13:31,393 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:13:31,393 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:13:31,393 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:13:31,393 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:13:31,393 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:13:31,394 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:13:31,394 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:13:31,394 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:13:31,394 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:13:31,394 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:13:31,395 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:13:31,395 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:13:31,395 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:13:31,395 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:13:31,395 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:13:31,396 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:13:31,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:13:31,396 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:13:31,396 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:13:31,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:13:31,396 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:13:31,397 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:13:31,397 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:13:31,397 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:13:31,397 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:13:31,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:13:31,397 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:13:31,398 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:13:31,398 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:13:31,398 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:13:31,398 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:13:31,398 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:13:31,399 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:13:31,399 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:13:31,399 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:13:31,399 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:13:31,399 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:13:31,399 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:13:31,400 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:13:31,400 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:13:31,400 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:13:31,400 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:13:31,400 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:13:31,401 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:13:31,401 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:13:31,401 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:13:31,401 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:13:31,401 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:13:31,401 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:13:31,402 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:13:31,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:13:31,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:13:31,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:13:31,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:13:31,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:13:31,403 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:13:31,403 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:13:31,403 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:13:31,403 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:13:31,403 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:13:31,404 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:13:31,404 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:13:31,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:13:31,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:13:31,405 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:13:31,405 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:13:31,405 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:13:31,405 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:13:31,405 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:13:31,405 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:13:31,406 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:13:31,406 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:13:31,406 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:13:31,406 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:13:31,406 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:13:31,406 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:13:31,407 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:13:31,407 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:13:31,407 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:13:31,407 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:13:31,407 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:13:31,408 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:13:31,408 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:13:31,408 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:13:31,408 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:13:31,408 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:13:31,408 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:13:31,409 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:13:31,409 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__DecryptAutoResponder_spec__1 [2019-10-13 21:13:31,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:13:31,409 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:13:31,409 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:13:31,409 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:13:31,410 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:13:31,410 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:13:31,410 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:13:31,410 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:13:31,410 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:13:31,411 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:13:31,411 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:13:31,411 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:13:31,411 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:13:31,411 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:13:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:13:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:13:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:13:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:13:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:13:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:13:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:13:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:13:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:13:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:13:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AutoResponder [2019-10-13 21:13:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:13:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:13:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:13:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:13:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:13:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:13:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:13:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:13:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:13:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:13:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:13:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:13:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:13:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:13:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:13:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:13:31,415 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:13:31,416 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:13:31,416 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:13:31,416 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:13:31,416 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:13:31,416 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:13:31,416 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:13:31,416 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:13:31,417 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:13:31,417 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:13:31,417 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:13:31,417 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:13:31,417 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:13:31,417 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:13:31,417 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:13:31,418 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:13:31,418 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:13:31,418 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:13:31,418 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:13:31,418 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:13:31,418 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:13:31,418 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:13:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:13:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:13:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:13:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:13:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:13:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:13:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:13:31,419 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:13:31,420 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:13:31,420 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:13:31,420 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:13:31,420 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:13:31,420 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:13:31,420 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:13:31,421 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:13:31,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:13:31,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:13:31,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:13:31,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:13:31,421 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:13:31,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:13:31,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:13:31,422 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:13:31,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:13:31,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:13:31,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:13:31,422 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:13:31,423 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:13:31,423 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:13:31,423 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:13:31,423 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:13:31,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:13:31,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:13:31,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:13:33,293 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:13:33,293 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:13:33,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:13:33 BoogieIcfgContainer [2019-10-13 21:13:33,297 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:13:33,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:13:33,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:13:33,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:13:33,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:13:30" (1/3) ... [2019-10-13 21:13:33,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@173d693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:13:33, skipping insertion in model container [2019-10-13 21:13:33,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:31" (2/3) ... [2019-10-13 21:13:33,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@173d693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:13:33, skipping insertion in model container [2019-10-13 21:13:33,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:13:33" (3/3) ... [2019-10-13 21:13:33,305 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec11_product15.cil.c [2019-10-13 21:13:33,315 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:13:33,326 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:13:33,338 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:13:33,377 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:13:33,377 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:13:33,377 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:13:33,377 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:13:33,378 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:13:33,378 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:13:33,378 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:13:33,378 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:13:33,416 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states. [2019-10-13 21:13:33,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-13 21:13:33,452 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:33,454 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:33,458 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:33,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:33,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1009460557, now seen corresponding path program 1 times [2019-10-13 21:13:33,476 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:33,480 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977334566] [2019-10-13 21:13:33,480 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:33,481 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:33,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:34,076 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:13:34,077 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977334566] [2019-10-13 21:13:34,078 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:34,079 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:13:34,079 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468306837] [2019-10-13 21:13:34,084 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:13:34,086 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:34,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:13:34,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:13:34,107 INFO L87 Difference]: Start difference. First operand 463 states. Second operand 2 states. [2019-10-13 21:13:34,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:34,220 INFO L93 Difference]: Finished difference Result 642 states and 848 transitions. [2019-10-13 21:13:34,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:13:34,223 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 184 [2019-10-13 21:13:34,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:34,263 INFO L225 Difference]: With dead ends: 642 [2019-10-13 21:13:34,263 INFO L226 Difference]: Without dead ends: 427 [2019-10-13 21:13:34,274 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 21:13:34,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2019-10-13 21:13:34,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2019-10-13 21:13:34,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2019-10-13 21:13:34,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 567 transitions. [2019-10-13 21:13:34,397 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 567 transitions. Word has length 184 [2019-10-13 21:13:34,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:34,400 INFO L462 AbstractCegarLoop]: Abstraction has 427 states and 567 transitions. [2019-10-13 21:13:34,400 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:13:34,400 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 567 transitions. [2019-10-13 21:13:34,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-13 21:13:34,406 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:34,407 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:34,407 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:34,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:34,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1618025728, now seen corresponding path program 1 times [2019-10-13 21:13:34,408 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:34,408 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942044878] [2019-10-13 21:13:34,408 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:34,409 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:34,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:34,677 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:13:34,678 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942044878] [2019-10-13 21:13:34,678 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:34,678 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:34,678 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116069388] [2019-10-13 21:13:34,680 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:34,681 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:34,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:34,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:34,682 INFO L87 Difference]: Start difference. First operand 427 states and 567 transitions. Second operand 3 states. [2019-10-13 21:13:34,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:34,734 INFO L93 Difference]: Finished difference Result 625 states and 814 transitions. [2019-10-13 21:13:34,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:34,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2019-10-13 21:13:34,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:34,740 INFO L225 Difference]: With dead ends: 625 [2019-10-13 21:13:34,740 INFO L226 Difference]: Without dead ends: 430 [2019-10-13 21:13:34,742 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 21:13:34,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2019-10-13 21:13:34,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 429. [2019-10-13 21:13:34,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2019-10-13 21:13:34,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 569 transitions. [2019-10-13 21:13:34,773 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 569 transitions. Word has length 185 [2019-10-13 21:13:34,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:34,774 INFO L462 AbstractCegarLoop]: Abstraction has 429 states and 569 transitions. [2019-10-13 21:13:34,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:34,775 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 569 transitions. [2019-10-13 21:13:34,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-13 21:13:34,779 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:34,779 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:34,780 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:34,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:34,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1065076368, now seen corresponding path program 1 times [2019-10-13 21:13:34,780 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:34,780 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234237865] [2019-10-13 21:13:34,781 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:34,781 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:34,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:35,049 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:13:35,050 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234237865] [2019-10-13 21:13:35,050 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:35,051 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:35,051 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326273026] [2019-10-13 21:13:35,052 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:35,055 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:35,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:35,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:35,055 INFO L87 Difference]: Start difference. First operand 429 states and 569 transitions. Second operand 3 states. [2019-10-13 21:13:35,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:35,120 INFO L93 Difference]: Finished difference Result 834 states and 1136 transitions. [2019-10-13 21:13:35,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:35,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2019-10-13 21:13:35,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:35,134 INFO L225 Difference]: With dead ends: 834 [2019-10-13 21:13:35,135 INFO L226 Difference]: Without dead ends: 470 [2019-10-13 21:13:35,138 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 21:13:35,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2019-10-13 21:13:35,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 469. [2019-10-13 21:13:35,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2019-10-13 21:13:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 638 transitions. [2019-10-13 21:13:35,196 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 638 transitions. Word has length 195 [2019-10-13 21:13:35,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:35,198 INFO L462 AbstractCegarLoop]: Abstraction has 469 states and 638 transitions. [2019-10-13 21:13:35,199 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:35,199 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 638 transitions. [2019-10-13 21:13:35,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-13 21:13:35,206 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:35,207 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:35,207 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:35,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:35,208 INFO L82 PathProgramCache]: Analyzing trace with hash 328316479, now seen corresponding path program 1 times [2019-10-13 21:13:35,208 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:35,208 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648877698] [2019-10-13 21:13:35,208 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:35,209 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:35,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:35,461 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:13:35,462 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648877698] [2019-10-13 21:13:35,462 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:35,462 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:35,464 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889041773] [2019-10-13 21:13:35,467 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:35,468 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:35,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:35,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:35,469 INFO L87 Difference]: Start difference. First operand 469 states and 638 transitions. Second operand 3 states. [2019-10-13 21:13:35,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:35,529 INFO L93 Difference]: Finished difference Result 951 states and 1338 transitions. [2019-10-13 21:13:35,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:35,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2019-10-13 21:13:35,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:35,543 INFO L225 Difference]: With dead ends: 951 [2019-10-13 21:13:35,543 INFO L226 Difference]: Without dead ends: 547 [2019-10-13 21:13:35,547 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 21:13:35,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2019-10-13 21:13:35,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 546. [2019-10-13 21:13:35,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2019-10-13 21:13:35,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 770 transitions. [2019-10-13 21:13:35,648 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 770 transitions. Word has length 196 [2019-10-13 21:13:35,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:35,651 INFO L462 AbstractCegarLoop]: Abstraction has 546 states and 770 transitions. [2019-10-13 21:13:35,651 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:35,651 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 770 transitions. [2019-10-13 21:13:35,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-10-13 21:13:35,659 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:35,660 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:35,660 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:35,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:35,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1785624336, now seen corresponding path program 1 times [2019-10-13 21:13:35,661 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:35,662 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481183702] [2019-10-13 21:13:35,662 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:35,663 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:35,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:13:35,918 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481183702] [2019-10-13 21:13:35,918 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:35,918 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:35,918 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355350496] [2019-10-13 21:13:35,920 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:35,920 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:35,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:35,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:35,922 INFO L87 Difference]: Start difference. First operand 546 states and 770 transitions. Second operand 3 states. [2019-10-13 21:13:35,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:35,968 INFO L93 Difference]: Finished difference Result 1176 states and 1724 transitions. [2019-10-13 21:13:35,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:35,968 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2019-10-13 21:13:35,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:35,974 INFO L225 Difference]: With dead ends: 1176 [2019-10-13 21:13:35,974 INFO L226 Difference]: Without dead ends: 695 [2019-10-13 21:13:35,977 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 21:13:35,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2019-10-13 21:13:36,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 694. [2019-10-13 21:13:36,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2019-10-13 21:13:36,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1022 transitions. [2019-10-13 21:13:36,017 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1022 transitions. Word has length 197 [2019-10-13 21:13:36,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:36,018 INFO L462 AbstractCegarLoop]: Abstraction has 694 states and 1022 transitions. [2019-10-13 21:13:36,018 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:36,018 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1022 transitions. [2019-10-13 21:13:36,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-10-13 21:13:36,024 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:36,024 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:36,025 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:36,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:36,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1999560001, now seen corresponding path program 1 times [2019-10-13 21:13:36,026 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:36,026 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926887295] [2019-10-13 21:13:36,026 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:36,026 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:36,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:36,247 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:13:36,248 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926887295] [2019-10-13 21:13:36,249 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:36,249 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:36,249 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375950586] [2019-10-13 21:13:36,250 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:36,250 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:36,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:36,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:36,251 INFO L87 Difference]: Start difference. First operand 694 states and 1022 transitions. Second operand 3 states. [2019-10-13 21:13:36,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:36,308 INFO L93 Difference]: Finished difference Result 1608 states and 2460 transitions. [2019-10-13 21:13:36,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:36,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 198 [2019-10-13 21:13:36,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:36,319 INFO L225 Difference]: With dead ends: 1608 [2019-10-13 21:13:36,319 INFO L226 Difference]: Without dead ends: 979 [2019-10-13 21:13:36,322 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 21:13:36,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2019-10-13 21:13:36,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 978. [2019-10-13 21:13:36,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2019-10-13 21:13:36,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1502 transitions. [2019-10-13 21:13:36,384 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1502 transitions. Word has length 198 [2019-10-13 21:13:36,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:36,385 INFO L462 AbstractCegarLoop]: Abstraction has 978 states and 1502 transitions. [2019-10-13 21:13:36,385 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:36,386 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1502 transitions. [2019-10-13 21:13:36,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-13 21:13:36,393 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:36,393 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:36,394 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:36,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:36,394 INFO L82 PathProgramCache]: Analyzing trace with hash 164433568, now seen corresponding path program 1 times [2019-10-13 21:13:36,394 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:36,395 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748890623] [2019-10-13 21:13:36,395 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:36,395 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:36,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:36,853 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:13:36,853 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748890623] [2019-10-13 21:13:36,854 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:36,854 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-10-13 21:13:36,854 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245974354] [2019-10-13 21:13:36,855 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-13 21:13:36,855 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:36,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-13 21:13:36,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:13:36,857 INFO L87 Difference]: Start difference. First operand 978 states and 1502 transitions. Second operand 19 states. [2019-10-13 21:13:41,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:41,152 INFO L93 Difference]: Finished difference Result 2535 states and 3849 transitions. [2019-10-13 21:13:41,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-10-13 21:13:41,153 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 201 [2019-10-13 21:13:41,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:41,182 INFO L225 Difference]: With dead ends: 2535 [2019-10-13 21:13:41,182 INFO L226 Difference]: Without dead ends: 2353 [2019-10-13 21:13:41,187 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2019-10-13 21:13:41,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2019-10-13 21:13:41,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 2316. [2019-10-13 21:13:41,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2316 states. [2019-10-13 21:13:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 3563 transitions. [2019-10-13 21:13:41,451 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 3563 transitions. Word has length 201 [2019-10-13 21:13:41,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:41,452 INFO L462 AbstractCegarLoop]: Abstraction has 2316 states and 3563 transitions. [2019-10-13 21:13:41,452 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-13 21:13:41,452 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 3563 transitions. [2019-10-13 21:13:41,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-10-13 21:13:41,467 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:41,467 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:41,468 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:41,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:41,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1129710859, now seen corresponding path program 1 times [2019-10-13 21:13:41,468 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:41,469 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609954418] [2019-10-13 21:13:41,469 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:41,469 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:41,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:41,677 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:13:41,677 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609954418] [2019-10-13 21:13:41,677 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:41,678 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 21:13:41,678 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234188471] [2019-10-13 21:13:41,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:13:41,679 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:41,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:13:41,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:13:41,679 INFO L87 Difference]: Start difference. First operand 2316 states and 3563 transitions. Second operand 9 states. [2019-10-13 21:13:41,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:41,975 INFO L93 Difference]: Finished difference Result 3149 states and 4658 transitions. [2019-10-13 21:13:41,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:13:41,975 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 202 [2019-10-13 21:13:41,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:41,992 INFO L225 Difference]: With dead ends: 3149 [2019-10-13 21:13:41,992 INFO L226 Difference]: Without dead ends: 2362 [2019-10-13 21:13:41,996 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:13:42,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2019-10-13 21:13:42,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2362. [2019-10-13 21:13:42,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2362 states. [2019-10-13 21:13:42,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 3636 transitions. [2019-10-13 21:13:42,140 INFO L78 Accepts]: Start accepts. Automaton has 2362 states and 3636 transitions. Word has length 202 [2019-10-13 21:13:42,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:42,140 INFO L462 AbstractCegarLoop]: Abstraction has 2362 states and 3636 transitions. [2019-10-13 21:13:42,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:13:42,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2362 states and 3636 transitions. [2019-10-13 21:13:42,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-10-13 21:13:42,158 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:42,158 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 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 21:13:42,159 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:42,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:42,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1961451491, now seen corresponding path program 1 times [2019-10-13 21:13:42,159 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:42,160 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853714009] [2019-10-13 21:13:42,160 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:42,160 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:42,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:42,459 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:13:42,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853714009] [2019-10-13 21:13:42,461 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:42,461 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-13 21:13:42,461 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623807168] [2019-10-13 21:13:42,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:13:42,462 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:42,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:13:42,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2019-10-13 21:13:42,463 INFO L87 Difference]: Start difference. First operand 2362 states and 3636 transitions. Second operand 14 states. [2019-10-13 21:13:42,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:42,801 INFO L93 Difference]: Finished difference Result 3233 states and 4784 transitions. [2019-10-13 21:13:42,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 21:13:42,801 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 202 [2019-10-13 21:13:42,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:42,829 INFO L225 Difference]: With dead ends: 3233 [2019-10-13 21:13:42,829 INFO L226 Difference]: Without dead ends: 2394 [2019-10-13 21:13:42,834 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:13:42,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2394 states. [2019-10-13 21:13:42,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2394 to 2394. [2019-10-13 21:13:42,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2394 states. [2019-10-13 21:13:42,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2394 states to 2394 states and 3668 transitions. [2019-10-13 21:13:42,979 INFO L78 Accepts]: Start accepts. Automaton has 2394 states and 3668 transitions. Word has length 202 [2019-10-13 21:13:42,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:42,981 INFO L462 AbstractCegarLoop]: Abstraction has 2394 states and 3668 transitions. [2019-10-13 21:13:42,982 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:13:42,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2394 states and 3668 transitions. [2019-10-13 21:13:42,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-10-13 21:13:42,993 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:42,993 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:42,994 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:42,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:42,994 INFO L82 PathProgramCache]: Analyzing trace with hash 193335460, now seen corresponding path program 1 times [2019-10-13 21:13:42,994 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:42,995 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324440589] [2019-10-13 21:13:42,995 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:42,995 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:42,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:43,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:43,294 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:13:43,295 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324440589] [2019-10-13 21:13:43,295 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:43,295 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-13 21:13:43,295 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091553623] [2019-10-13 21:13:43,296 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:13:43,297 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:43,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:13:43,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:13:43,297 INFO L87 Difference]: Start difference. First operand 2394 states and 3668 transitions. Second operand 15 states. [2019-10-13 21:13:46,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:46,311 INFO L93 Difference]: Finished difference Result 3273 states and 4819 transitions. [2019-10-13 21:13:46,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-10-13 21:13:46,311 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 202 [2019-10-13 21:13:46,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:46,328 INFO L225 Difference]: With dead ends: 3273 [2019-10-13 21:13:46,328 INFO L226 Difference]: Without dead ends: 2478 [2019-10-13 21:13:46,337 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2019-10-13 21:13:46,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2019-10-13 21:13:46,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 2423. [2019-10-13 21:13:46,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2423 states. [2019-10-13 21:13:46,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 3711 transitions. [2019-10-13 21:13:46,535 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 3711 transitions. Word has length 202 [2019-10-13 21:13:46,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:46,536 INFO L462 AbstractCegarLoop]: Abstraction has 2423 states and 3711 transitions. [2019-10-13 21:13:46,536 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:13:46,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 3711 transitions. [2019-10-13 21:13:46,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-10-13 21:13:46,553 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:46,554 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:46,554 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:46,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:46,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1971016039, now seen corresponding path program 1 times [2019-10-13 21:13:46,555 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:46,556 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000476248] [2019-10-13 21:13:46,556 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:46,556 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:46,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:46,753 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:13:46,754 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000476248] [2019-10-13 21:13:46,754 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:46,754 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:13:46,754 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202105164] [2019-10-13 21:13:46,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:13:46,755 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:46,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:13:46,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:13:46,756 INFO L87 Difference]: Start difference. First operand 2423 states and 3711 transitions. Second operand 5 states. [2019-10-13 21:13:47,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:47,712 INFO L93 Difference]: Finished difference Result 4799 states and 7182 transitions. [2019-10-13 21:13:47,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:13:47,713 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 202 [2019-10-13 21:13:47,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:47,740 INFO L225 Difference]: With dead ends: 4799 [2019-10-13 21:13:47,741 INFO L226 Difference]: Without dead ends: 4396 [2019-10-13 21:13:47,745 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 21:13:47,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4396 states. [2019-10-13 21:13:47,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4396 to 4365. [2019-10-13 21:13:47,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4365 states. [2019-10-13 21:13:47,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4365 states to 4365 states and 6623 transitions. [2019-10-13 21:13:47,970 INFO L78 Accepts]: Start accepts. Automaton has 4365 states and 6623 transitions. Word has length 202 [2019-10-13 21:13:47,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:47,971 INFO L462 AbstractCegarLoop]: Abstraction has 4365 states and 6623 transitions. [2019-10-13 21:13:47,971 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:13:47,971 INFO L276 IsEmpty]: Start isEmpty. Operand 4365 states and 6623 transitions. [2019-10-13 21:13:47,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-10-13 21:13:47,990 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:47,990 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:47,991 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:47,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:47,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1840275930, now seen corresponding path program 1 times [2019-10-13 21:13:47,991 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:47,992 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366519872] [2019-10-13 21:13:47,992 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:47,992 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:47,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:48,327 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:13:48,327 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366519872] [2019-10-13 21:13:48,328 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:48,328 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:13:48,328 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207866331] [2019-10-13 21:13:48,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:13:48,329 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:48,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:13:48,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:13:48,329 INFO L87 Difference]: Start difference. First operand 4365 states and 6623 transitions. Second operand 7 states. [2019-10-13 21:13:49,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:49,959 INFO L93 Difference]: Finished difference Result 10441 states and 14838 transitions. [2019-10-13 21:13:49,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 21:13:49,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2019-10-13 21:13:49,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:50,037 INFO L225 Difference]: With dead ends: 10441 [2019-10-13 21:13:50,037 INFO L226 Difference]: Without dead ends: 8499 [2019-10-13 21:13:50,050 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:13:50,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8499 states. [2019-10-13 21:13:50,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8499 to 8461. [2019-10-13 21:13:50,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8461 states. [2019-10-13 21:13:50,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8461 states to 8461 states and 12143 transitions. [2019-10-13 21:13:50,524 INFO L78 Accepts]: Start accepts. Automaton has 8461 states and 12143 transitions. Word has length 202 [2019-10-13 21:13:50,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:50,525 INFO L462 AbstractCegarLoop]: Abstraction has 8461 states and 12143 transitions. [2019-10-13 21:13:50,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:13:50,525 INFO L276 IsEmpty]: Start isEmpty. Operand 8461 states and 12143 transitions. [2019-10-13 21:13:50,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-13 21:13:50,544 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:50,544 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:50,544 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:50,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:50,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1975708119, now seen corresponding path program 1 times [2019-10-13 21:13:50,545 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:50,545 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687046053] [2019-10-13 21:13:50,545 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:50,546 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:50,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:50,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:50,961 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:13:50,962 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687046053] [2019-10-13 21:13:50,962 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:50,962 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2019-10-13 21:13:50,962 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917615675] [2019-10-13 21:13:50,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-13 21:13:50,963 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:50,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-13 21:13:50,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2019-10-13 21:13:50,964 INFO L87 Difference]: Start difference. First operand 8461 states and 12143 transitions. Second operand 24 states. [2019-10-13 21:13:51,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:51,825 INFO L93 Difference]: Finished difference Result 15254 states and 21358 transitions. [2019-10-13 21:13:51,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-13 21:13:51,825 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 203 [2019-10-13 21:13:51,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:51,871 INFO L225 Difference]: With dead ends: 15254 [2019-10-13 21:13:51,871 INFO L226 Difference]: Without dead ends: 8814 [2019-10-13 21:13:51,896 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=1037, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 21:13:51,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8814 states. [2019-10-13 21:13:52,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8814 to 8591. [2019-10-13 21:13:52,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8591 states. [2019-10-13 21:13:52,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8591 states to 8591 states and 12329 transitions. [2019-10-13 21:13:52,473 INFO L78 Accepts]: Start accepts. Automaton has 8591 states and 12329 transitions. Word has length 203 [2019-10-13 21:13:52,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:52,474 INFO L462 AbstractCegarLoop]: Abstraction has 8591 states and 12329 transitions. [2019-10-13 21:13:52,474 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-10-13 21:13:52,474 INFO L276 IsEmpty]: Start isEmpty. Operand 8591 states and 12329 transitions. [2019-10-13 21:13:52,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-10-13 21:13:52,499 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:52,500 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:52,500 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:52,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:52,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1635585549, now seen corresponding path program 1 times [2019-10-13 21:13:52,501 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:52,501 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77283335] [2019-10-13 21:13:52,501 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:52,501 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:52,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:52,691 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:13:52,692 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77283335] [2019-10-13 21:13:52,692 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:52,692 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 21:13:52,692 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777308396] [2019-10-13 21:13:52,693 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 21:13:52,693 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:52,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 21:13:52,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:13:52,694 INFO L87 Difference]: Start difference. First operand 8591 states and 12329 transitions. Second operand 10 states. [2019-10-13 21:13:52,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:52,930 INFO L93 Difference]: Finished difference Result 8656 states and 12393 transitions. [2019-10-13 21:13:52,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:13:52,931 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 207 [2019-10-13 21:13:52,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:52,964 INFO L225 Difference]: With dead ends: 8656 [2019-10-13 21:13:52,964 INFO L226 Difference]: Without dead ends: 8442 [2019-10-13 21:13:52,972 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:13:52,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8442 states. [2019-10-13 21:13:53,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8442 to 8438. [2019-10-13 21:13:53,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8438 states. [2019-10-13 21:13:53,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8438 states to 8438 states and 12096 transitions. [2019-10-13 21:13:53,315 INFO L78 Accepts]: Start accepts. Automaton has 8438 states and 12096 transitions. Word has length 207 [2019-10-13 21:13:53,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:53,316 INFO L462 AbstractCegarLoop]: Abstraction has 8438 states and 12096 transitions. [2019-10-13 21:13:53,316 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 21:13:53,317 INFO L276 IsEmpty]: Start isEmpty. Operand 8438 states and 12096 transitions. [2019-10-13 21:13:53,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-10-13 21:13:53,349 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:53,350 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:53,350 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:53,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:53,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1032859762, now seen corresponding path program 1 times [2019-10-13 21:13:53,351 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:53,351 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895329728] [2019-10-13 21:13:53,352 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:53,352 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:53,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:54,260 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:13:54,260 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895329728] [2019-10-13 21:13:54,261 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:54,261 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:13:54,261 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795132473] [2019-10-13 21:13:54,262 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:13:54,262 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:54,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:13:54,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:13:54,263 INFO L87 Difference]: Start difference. First operand 8438 states and 12096 transitions. Second operand 5 states. [2019-10-13 21:13:54,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:54,468 INFO L93 Difference]: Finished difference Result 12964 states and 17977 transitions. [2019-10-13 21:13:54,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:13:54,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2019-10-13 21:13:54,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:54,499 INFO L225 Difference]: With dead ends: 12964 [2019-10-13 21:13:54,499 INFO L226 Difference]: Without dead ends: 8621 [2019-10-13 21:13:54,516 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:13:54,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8621 states. [2019-10-13 21:13:54,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8621 to 8516. [2019-10-13 21:13:54,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8516 states. [2019-10-13 21:13:54,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8516 states to 8516 states and 12137 transitions. [2019-10-13 21:13:54,837 INFO L78 Accepts]: Start accepts. Automaton has 8516 states and 12137 transitions. Word has length 212 [2019-10-13 21:13:54,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:54,838 INFO L462 AbstractCegarLoop]: Abstraction has 8516 states and 12137 transitions. [2019-10-13 21:13:54,838 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:13:54,838 INFO L276 IsEmpty]: Start isEmpty. Operand 8516 states and 12137 transitions. [2019-10-13 21:13:54,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-13 21:13:54,855 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:54,855 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:54,855 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:54,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:54,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1398950784, now seen corresponding path program 1 times [2019-10-13 21:13:54,856 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:54,856 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620207077] [2019-10-13 21:13:54,857 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:54,857 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:54,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:54,991 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:13:54,996 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620207077] [2019-10-13 21:13:54,999 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:54,999 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:13:54,999 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506061477] [2019-10-13 21:13:55,000 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:13:55,000 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:55,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:13:55,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:13:55,001 INFO L87 Difference]: Start difference. First operand 8516 states and 12137 transitions. Second operand 5 states. [2019-10-13 21:13:55,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:55,187 INFO L93 Difference]: Finished difference Result 12510 states and 17250 transitions. [2019-10-13 21:13:55,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:13:55,187 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2019-10-13 21:13:55,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:55,214 INFO L225 Difference]: With dead ends: 12510 [2019-10-13 21:13:55,214 INFO L226 Difference]: Without dead ends: 7178 [2019-10-13 21:13:55,229 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:13:55,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7178 states. [2019-10-13 21:13:55,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7178 to 7168. [2019-10-13 21:13:55,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7168 states. [2019-10-13 21:13:55,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7168 states to 7168 states and 10326 transitions. [2019-10-13 21:13:55,624 INFO L78 Accepts]: Start accepts. Automaton has 7168 states and 10326 transitions. Word has length 214 [2019-10-13 21:13:55,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:55,625 INFO L462 AbstractCegarLoop]: Abstraction has 7168 states and 10326 transitions. [2019-10-13 21:13:55,625 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:13:55,626 INFO L276 IsEmpty]: Start isEmpty. Operand 7168 states and 10326 transitions. [2019-10-13 21:13:55,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-10-13 21:13:55,649 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:55,649 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:55,649 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:55,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:55,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1647701080, now seen corresponding path program 1 times [2019-10-13 21:13:55,650 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:55,651 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789379389] [2019-10-13 21:13:55,651 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:55,651 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:55,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:13:55,810 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789379389] [2019-10-13 21:13:55,811 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:55,811 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:13:55,811 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644760281] [2019-10-13 21:13:55,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:13:55,812 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:55,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:13:55,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:13:55,812 INFO L87 Difference]: Start difference. First operand 7168 states and 10326 transitions. Second operand 6 states. [2019-10-13 21:13:56,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:56,439 INFO L93 Difference]: Finished difference Result 18402 states and 26277 transitions. [2019-10-13 21:13:56,439 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:13:56,439 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 213 [2019-10-13 21:13:56,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:56,491 INFO L225 Difference]: With dead ends: 18402 [2019-10-13 21:13:56,491 INFO L226 Difference]: Without dead ends: 14369 [2019-10-13 21:13:56,509 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:13:56,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14369 states. [2019-10-13 21:13:57,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14369 to 14191. [2019-10-13 21:13:57,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14191 states. [2019-10-13 21:13:57,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14191 states to 14191 states and 20810 transitions. [2019-10-13 21:13:57,153 INFO L78 Accepts]: Start accepts. Automaton has 14191 states and 20810 transitions. Word has length 213 [2019-10-13 21:13:57,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:57,153 INFO L462 AbstractCegarLoop]: Abstraction has 14191 states and 20810 transitions. [2019-10-13 21:13:57,153 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:13:57,153 INFO L276 IsEmpty]: Start isEmpty. Operand 14191 states and 20810 transitions. [2019-10-13 21:13:57,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-10-13 21:13:57,188 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:57,189 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:57,189 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:57,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:57,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1801570746, now seen corresponding path program 1 times [2019-10-13 21:13:57,189 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:57,190 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006179850] [2019-10-13 21:13:57,190 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:57,190 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:57,190 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:57,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:57,389 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:13:57,390 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006179850] [2019-10-13 21:13:57,390 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:57,390 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:13:57,390 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965901603] [2019-10-13 21:13:57,391 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:13:57,392 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:57,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:13:57,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:13:57,392 INFO L87 Difference]: Start difference. First operand 14191 states and 20810 transitions. Second operand 8 states.