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_spec4_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:15:36,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:15:36,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:15:36,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:15:36,206 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:15:36,207 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:15:36,209 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:15:36,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:15:36,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:15:36,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:15:36,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:15:36,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:15:36,232 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:15:36,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:15:36,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:15:36,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:15:36,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:15:36,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:15:36,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:15:36,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:15:36,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:15:36,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:15:36,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:15:36,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:15:36,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:15:36,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:15:36,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:15:36,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:15:36,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:15:36,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:15:36,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:15:36,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:15:36,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:15:36,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:15:36,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:15:36,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:15:36,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:15:36,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:15:36,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:15:36,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:15:36,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:15:36,268 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:15:36,282 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:15:36,283 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:15:36,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:15:36,284 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:15:36,284 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:15:36,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:15:36,285 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:15:36,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:15:36,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:15:36,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:15:36,286 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:15:36,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:15:36,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:15:36,286 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:15:36,286 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:15:36,287 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:15:36,287 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:15:36,287 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:15:36,287 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:15:36,287 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:15:36,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:15:36,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:15:36,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:15:36,288 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:15:36,288 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:15:36,289 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:15:36,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:15:36,289 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:15:36,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:15:36,567 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:15:36,583 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:15:36,588 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:15:36,590 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:15:36,590 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:15:36,591 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product30.cil.c [2019-10-15 01:15:36,655 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e07053c2c/c5336215b6264999b00a3a03a9f19634/FLAG3acfdf6f8 [2019-10-15 01:15:37,307 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:15:37,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product30.cil.c [2019-10-15 01:15:37,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e07053c2c/c5336215b6264999b00a3a03a9f19634/FLAG3acfdf6f8 [2019-10-15 01:15:37,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e07053c2c/c5336215b6264999b00a3a03a9f19634 [2019-10-15 01:15:37,526 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:15:37,528 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:15:37,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:15:37,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:15:37,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:15:37,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:15:37" (1/1) ... [2019-10-15 01:15:37,538 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 15.10 01:15:37, skipping insertion in model container [2019-10-15 01:15:37,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:15:37" (1/1) ... [2019-10-15 01:15:37,547 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:15:37,644 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:15:38,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:15:38,490 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:15:38,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:15:38,699 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:15:38,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:38 WrapperNode [2019-10-15 01:15:38,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:15:38,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:15:38,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:15:38,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:15:38,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:38" (1/1) ... [2019-10-15 01:15:38,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:38" (1/1) ... [2019-10-15 01:15:38,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:38" (1/1) ... [2019-10-15 01:15:38,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:38" (1/1) ... [2019-10-15 01:15:38,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:38" (1/1) ... [2019-10-15 01:15:38,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:38" (1/1) ... [2019-10-15 01:15:38,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:38" (1/1) ... [2019-10-15 01:15:38,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:15:38,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:15:38,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:15:38,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:15:38,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:15:39,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:15:39,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:15:39,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:15:39,006 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:15:39,006 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:15:39,006 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:15:39,006 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:15:39,006 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:15:39,007 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:15:39,007 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:15:39,007 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:15:39,007 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:15:39,008 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:15:39,008 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-15 01:15:39,008 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:15:39,008 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:15:39,009 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:15:39,009 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:15:39,009 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:15:39,009 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:15:39,010 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:15:39,010 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:15:39,010 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:15:39,010 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:15:39,011 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:15:39,011 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:15:39,011 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:15:39,011 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:15:39,011 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:15:39,011 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-15 01:15:39,012 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-15 01:15:39,012 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:15:39,012 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:15:39,012 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:15:39,012 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:15:39,012 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:15:39,013 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:15:39,013 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:15:39,013 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:15:39,013 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:15:39,013 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:15:39,014 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:15:39,014 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:15:39,014 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:15:39,014 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:15:39,014 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:15:39,014 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:15:39,014 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:15:39,015 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:15:39,015 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:15:39,015 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:15:39,015 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:15:39,015 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:15:39,015 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:15:39,015 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:15:39,016 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:15:39,016 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:15:39,016 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:15:39,016 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:15:39,016 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:15:39,016 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:15:39,017 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:15:39,017 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:15:39,017 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:15:39,017 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:15:39,017 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:15:39,017 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:15:39,018 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:15:39,018 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:15:39,018 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:15:39,018 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:15:39,018 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:15:39,018 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:15:39,019 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:15:39,019 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:15:39,019 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:15:39,019 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:15:39,019 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:15:39,019 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:15:39,019 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:15:39,020 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:15:39,020 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:15:39,020 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:15:39,020 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:15:39,020 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:15:39,020 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:15:39,021 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:15:39,021 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:15:39,021 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:15:39,021 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:15:39,021 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:15:39,021 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:15:39,022 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:15:39,022 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:15:39,022 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:15:39,022 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:15:39,022 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:15:39,022 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:15:39,022 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:15:39,023 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:15:39,023 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:15:39,023 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:15:39,023 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:15:39,023 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:15:39,023 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:15:39,023 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:15:39,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:15:39,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:15:39,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:15:39,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:15:39,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:15:39,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:15:39,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-10-15 01:15:39,025 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:15:39,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:15:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:15:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:15:39,025 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:15:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:15:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:15:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:15:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:15:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:15:39,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:15:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:15:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:15:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:15:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:15:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:15:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:15:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:15:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:15:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:15:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:15:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:15:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:15:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:15:39,029 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:15:39,029 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:15:39,029 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:15:39,029 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:15:39,029 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:15:39,029 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:15:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:15:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:15:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:15:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:15:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:15:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:15:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:15:39,031 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:15:39,031 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:15:39,031 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:15:39,031 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:15:39,031 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:15:39,031 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:15:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:15:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:15:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:15:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:15:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:15:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-10-15 01:15:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:15:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:15:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-15 01:15:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:15:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:15:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:15:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:15:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:15:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:15:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:15:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-15 01:15:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-15 01:15:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:15:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:15:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:15:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:15:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:15:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:15:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:15:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:15:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:15:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:15:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:15:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:15:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:15:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:15:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:15:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:15:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:15:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:15:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:15:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:15:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:15:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:15:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:15:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:15:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:15:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:15:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:15:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:15:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:15:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:15:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:15:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:15:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:15:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:15:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:15:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:15:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:15:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:15:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:15:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:15:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:15:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:15:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:15:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:15:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:15:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:15:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:15:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:15:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:15:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:15:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:15:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:15:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:15:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:15:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:15:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:15:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:15:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:15:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:15:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:15:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:15:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:15:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:15:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:15:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:15:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:15:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:15:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:15:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:15:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:15:39,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:15:41,221 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:15:41,221 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:15:41,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:41 BoogieIcfgContainer [2019-10-15 01:15:41,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:15:41,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:15:41,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:15:41,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:15:41,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:15:37" (1/3) ... [2019-10-15 01:15:41,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16dec0a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:41, skipping insertion in model container [2019-10-15 01:15:41,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:15:38" (2/3) ... [2019-10-15 01:15:41,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16dec0a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:41, skipping insertion in model container [2019-10-15 01:15:41,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:41" (3/3) ... [2019-10-15 01:15:41,232 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product30.cil.c [2019-10-15 01:15:41,242 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:15:41,251 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:15:41,264 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:15:41,298 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:15:41,298 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:15:41,298 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:15:41,299 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:15:41,302 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:15:41,303 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:15:41,303 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:15:41,303 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:15:41,345 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states. [2019-10-15 01:15:41,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2019-10-15 01:15:41,377 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:41,379 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] [2019-10-15 01:15:41,382 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:41,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:41,389 INFO L82 PathProgramCache]: Analyzing trace with hash -400048036, now seen corresponding path program 1 times [2019-10-15 01:15:41,399 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:41,399 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272101461] [2019-10-15 01:15:41,400 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:41,400 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:41,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:41,968 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:41,968 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272101461] [2019-10-15 01:15:41,969 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:41,970 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:15:41,970 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807649368] [2019-10-15 01:15:41,977 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:15:41,979 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:41,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:15:41,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:15:41,998 INFO L87 Difference]: Start difference. First operand 544 states. Second operand 2 states. [2019-10-15 01:15:42,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:42,120 INFO L93 Difference]: Finished difference Result 774 states and 1022 transitions. [2019-10-15 01:15:42,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:15:42,122 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 164 [2019-10-15 01:15:42,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:42,160 INFO L225 Difference]: With dead ends: 774 [2019-10-15 01:15:42,160 INFO L226 Difference]: Without dead ends: 493 [2019-10-15 01:15:42,172 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:15:42,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2019-10-15 01:15:42,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 493. [2019-10-15 01:15:42,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 493 states. [2019-10-15 01:15:42,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 655 transitions. [2019-10-15 01:15:42,319 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 655 transitions. Word has length 164 [2019-10-15 01:15:42,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:42,322 INFO L462 AbstractCegarLoop]: Abstraction has 493 states and 655 transitions. [2019-10-15 01:15:42,322 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:15:42,322 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 655 transitions. [2019-10-15 01:15:42,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-15 01:15:42,330 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:42,330 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] [2019-10-15 01:15:42,331 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:42,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:42,332 INFO L82 PathProgramCache]: Analyzing trace with hash -714771440, now seen corresponding path program 1 times [2019-10-15 01:15:42,332 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:42,333 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660326148] [2019-10-15 01:15:42,333 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:42,333 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:42,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:42,589 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:42,589 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660326148] [2019-10-15 01:15:42,590 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:42,590 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:42,590 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162733895] [2019-10-15 01:15:42,592 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:42,593 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:42,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:42,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:42,593 INFO L87 Difference]: Start difference. First operand 493 states and 655 transitions. Second operand 3 states. [2019-10-15 01:15:42,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:42,634 INFO L93 Difference]: Finished difference Result 757 states and 990 transitions. [2019-10-15 01:15:42,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:42,635 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2019-10-15 01:15:42,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:42,640 INFO L225 Difference]: With dead ends: 757 [2019-10-15 01:15:42,640 INFO L226 Difference]: Without dead ends: 496 [2019-10-15 01:15:42,642 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:42,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2019-10-15 01:15:42,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 495. [2019-10-15 01:15:42,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2019-10-15 01:15:42,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 657 transitions. [2019-10-15 01:15:42,667 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 657 transitions. Word has length 165 [2019-10-15 01:15:42,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:42,667 INFO L462 AbstractCegarLoop]: Abstraction has 495 states and 657 transitions. [2019-10-15 01:15:42,668 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:42,668 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 657 transitions. [2019-10-15 01:15:42,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-15 01:15:42,671 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:42,672 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] [2019-10-15 01:15:42,672 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:42,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:42,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1858618400, now seen corresponding path program 1 times [2019-10-15 01:15:42,673 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:42,673 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377157245] [2019-10-15 01:15:42,673 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:42,674 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:42,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:42,887 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:42,888 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377157245] [2019-10-15 01:15:42,888 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:42,888 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:42,888 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552172517] [2019-10-15 01:15:42,889 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:42,889 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:42,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:42,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:42,890 INFO L87 Difference]: Start difference. First operand 495 states and 657 transitions. Second operand 3 states. [2019-10-15 01:15:42,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:42,920 INFO L93 Difference]: Finished difference Result 966 states and 1312 transitions. [2019-10-15 01:15:42,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:42,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-10-15 01:15:42,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:42,924 INFO L225 Difference]: With dead ends: 966 [2019-10-15 01:15:42,925 INFO L226 Difference]: Without dead ends: 536 [2019-10-15 01:15:42,927 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:42,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2019-10-15 01:15:42,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 535. [2019-10-15 01:15:42,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 535 states. [2019-10-15 01:15:42,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 726 transitions. [2019-10-15 01:15:42,951 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 726 transitions. Word has length 175 [2019-10-15 01:15:42,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:42,952 INFO L462 AbstractCegarLoop]: Abstraction has 535 states and 726 transitions. [2019-10-15 01:15:42,952 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:42,952 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 726 transitions. [2019-10-15 01:15:42,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-10-15 01:15:42,956 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:42,956 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] [2019-10-15 01:15:42,956 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:42,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:42,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1912264946, now seen corresponding path program 1 times [2019-10-15 01:15:42,957 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:42,957 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935062659] [2019-10-15 01:15:42,958 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:42,958 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:42,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:43,118 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935062659] [2019-10-15 01:15:43,119 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:43,119 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:43,120 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889029686] [2019-10-15 01:15:43,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:43,121 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:43,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:43,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:43,122 INFO L87 Difference]: Start difference. First operand 535 states and 726 transitions. Second operand 3 states. [2019-10-15 01:15:43,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:43,166 INFO L93 Difference]: Finished difference Result 1083 states and 1514 transitions. [2019-10-15 01:15:43,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:43,166 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2019-10-15 01:15:43,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:43,173 INFO L225 Difference]: With dead ends: 1083 [2019-10-15 01:15:43,173 INFO L226 Difference]: Without dead ends: 613 [2019-10-15 01:15:43,175 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:43,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2019-10-15 01:15:43,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 612. [2019-10-15 01:15:43,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 612 states. [2019-10-15 01:15:43,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 858 transitions. [2019-10-15 01:15:43,215 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 858 transitions. Word has length 176 [2019-10-15 01:15:43,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:43,216 INFO L462 AbstractCegarLoop]: Abstraction has 612 states and 858 transitions. [2019-10-15 01:15:43,216 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:43,217 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 858 transitions. [2019-10-15 01:15:43,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-15 01:15:43,224 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:43,225 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] [2019-10-15 01:15:43,225 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:43,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:43,226 INFO L82 PathProgramCache]: Analyzing trace with hash -440539328, now seen corresponding path program 1 times [2019-10-15 01:15:43,226 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:43,227 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438059988] [2019-10-15 01:15:43,227 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:43,227 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:43,228 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:43,497 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:43,498 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438059988] [2019-10-15 01:15:43,498 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:43,498 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:43,499 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591798052] [2019-10-15 01:15:43,500 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:43,500 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:43,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:43,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:43,501 INFO L87 Difference]: Start difference. First operand 612 states and 858 transitions. Second operand 3 states. [2019-10-15 01:15:43,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:43,547 INFO L93 Difference]: Finished difference Result 1308 states and 1900 transitions. [2019-10-15 01:15:43,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:43,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2019-10-15 01:15:43,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:43,555 INFO L225 Difference]: With dead ends: 1308 [2019-10-15 01:15:43,555 INFO L226 Difference]: Without dead ends: 761 [2019-10-15 01:15:43,558 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:43,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2019-10-15 01:15:43,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 760. [2019-10-15 01:15:43,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2019-10-15 01:15:43,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1110 transitions. [2019-10-15 01:15:43,598 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1110 transitions. Word has length 177 [2019-10-15 01:15:43,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:43,599 INFO L462 AbstractCegarLoop]: Abstraction has 760 states and 1110 transitions. [2019-10-15 01:15:43,600 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:43,600 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1110 transitions. [2019-10-15 01:15:43,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-15 01:15:43,607 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:43,608 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] [2019-10-15 01:15:43,608 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:43,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:43,609 INFO L82 PathProgramCache]: Analyzing trace with hash 256193454, now seen corresponding path program 1 times [2019-10-15 01:15:43,609 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:43,610 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275848296] [2019-10-15 01:15:43,610 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:43,610 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:43,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:43,809 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-15 01:15:43,810 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275848296] [2019-10-15 01:15:43,810 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:43,810 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:15:43,811 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452031188] [2019-10-15 01:15:43,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:15:43,811 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:43,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:15:43,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:43,812 INFO L87 Difference]: Start difference. First operand 760 states and 1110 transitions. Second operand 3 states. [2019-10-15 01:15:43,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:43,859 INFO L93 Difference]: Finished difference Result 1740 states and 2636 transitions. [2019-10-15 01:15:43,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:15:43,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2019-10-15 01:15:43,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:43,866 INFO L225 Difference]: With dead ends: 1740 [2019-10-15 01:15:43,867 INFO L226 Difference]: Without dead ends: 1045 [2019-10-15 01:15:43,869 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:15:43,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2019-10-15 01:15:44,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1044. [2019-10-15 01:15:44,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1044 states. [2019-10-15 01:15:44,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1590 transitions. [2019-10-15 01:15:44,018 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1590 transitions. Word has length 178 [2019-10-15 01:15:44,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:44,020 INFO L462 AbstractCegarLoop]: Abstraction has 1044 states and 1590 transitions. [2019-10-15 01:15:44,020 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:15:44,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1590 transitions. [2019-10-15 01:15:44,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-15 01:15:44,026 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:44,026 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] [2019-10-15 01:15:44,027 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:44,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:44,027 INFO L82 PathProgramCache]: Analyzing trace with hash 177792546, now seen corresponding path program 1 times [2019-10-15 01:15:44,027 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:44,028 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906371966] [2019-10-15 01:15:44,028 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:44,028 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:44,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:44,259 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:44,259 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906371966] [2019-10-15 01:15:44,260 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:44,260 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 01:15:44,260 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209888923] [2019-10-15 01:15:44,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:15:44,261 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:44,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:15:44,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 01:15:44,262 INFO L87 Difference]: Start difference. First operand 1044 states and 1590 transitions. Second operand 7 states. [2019-10-15 01:15:47,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:47,327 INFO L93 Difference]: Finished difference Result 1558 states and 2250 transitions. [2019-10-15 01:15:47,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:15:47,329 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2019-10-15 01:15:47,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:47,339 INFO L225 Difference]: With dead ends: 1558 [2019-10-15 01:15:47,339 INFO L226 Difference]: Without dead ends: 1308 [2019-10-15 01:15:47,341 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:15:47,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2019-10-15 01:15:47,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 1299. [2019-10-15 01:15:47,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2019-10-15 01:15:47,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1918 transitions. [2019-10-15 01:15:47,410 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1918 transitions. Word has length 181 [2019-10-15 01:15:47,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:47,411 INFO L462 AbstractCegarLoop]: Abstraction has 1299 states and 1918 transitions. [2019-10-15 01:15:47,411 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:15:47,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1918 transitions. [2019-10-15 01:15:47,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-15 01:15:47,418 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:47,418 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] [2019-10-15 01:15:47,419 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:47,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:47,419 INFO L82 PathProgramCache]: Analyzing trace with hash 2019935353, now seen corresponding path program 1 times [2019-10-15 01:15:47,419 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:47,420 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936430471] [2019-10-15 01:15:47,420 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:47,420 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:47,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:47,762 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:47,762 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936430471] [2019-10-15 01:15:47,762 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:47,763 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-15 01:15:47,763 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540053144] [2019-10-15 01:15:47,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-15 01:15:47,764 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:47,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-15 01:15:47,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:15:47,765 INFO L87 Difference]: Start difference. First operand 1299 states and 1918 transitions. Second operand 18 states. [2019-10-15 01:15:48,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:48,230 INFO L93 Difference]: Finished difference Result 1882 states and 2678 transitions. [2019-10-15 01:15:48,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-15 01:15:48,231 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 182 [2019-10-15 01:15:48,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:48,241 INFO L225 Difference]: With dead ends: 1882 [2019-10-15 01:15:48,241 INFO L226 Difference]: Without dead ends: 1349 [2019-10-15 01:15:48,245 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:15:48,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2019-10-15 01:15:48,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1345. [2019-10-15 01:15:48,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1345 states. [2019-10-15 01:15:48,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 1981 transitions. [2019-10-15 01:15:48,365 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 1981 transitions. Word has length 182 [2019-10-15 01:15:48,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:48,366 INFO L462 AbstractCegarLoop]: Abstraction has 1345 states and 1981 transitions. [2019-10-15 01:15:48,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-15 01:15:48,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 1981 transitions. [2019-10-15 01:15:48,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-15 01:15:48,372 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:48,373 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] [2019-10-15 01:15:48,373 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:48,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:48,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1115271463, now seen corresponding path program 1 times [2019-10-15 01:15:48,374 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:48,374 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702974292] [2019-10-15 01:15:48,374 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:48,374 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:48,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:48,571 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 01:15:48,572 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702974292] [2019-10-15 01:15:48,572 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:48,572 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:15:48,572 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071096804] [2019-10-15 01:15:48,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:15:48,573 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:48,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:15:48,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:15:48,574 INFO L87 Difference]: Start difference. First operand 1345 states and 1981 transitions. Second operand 8 states. [2019-10-15 01:15:49,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:49,349 INFO L93 Difference]: Finished difference Result 2088 states and 2959 transitions. [2019-10-15 01:15:49,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:15:49,349 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 191 [2019-10-15 01:15:49,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:49,374 INFO L225 Difference]: With dead ends: 2088 [2019-10-15 01:15:49,374 INFO L226 Difference]: Without dead ends: 1929 [2019-10-15 01:15:49,377 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:15:49,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1929 states. [2019-10-15 01:15:49,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1929 to 1916. [2019-10-15 01:15:49,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2019-10-15 01:15:49,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2733 transitions. [2019-10-15 01:15:49,492 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2733 transitions. Word has length 191 [2019-10-15 01:15:49,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:49,493 INFO L462 AbstractCegarLoop]: Abstraction has 1916 states and 2733 transitions. [2019-10-15 01:15:49,493 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:15:49,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2733 transitions. [2019-10-15 01:15:49,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-10-15 01:15:49,501 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:49,501 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] [2019-10-15 01:15:49,502 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:49,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:49,502 INFO L82 PathProgramCache]: Analyzing trace with hash 839491174, now seen corresponding path program 1 times [2019-10-15 01:15:49,502 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:49,502 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61262985] [2019-10-15 01:15:49,503 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:49,503 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:49,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:49,880 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:49,880 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61262985] [2019-10-15 01:15:49,880 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:15:49,881 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2019-10-15 01:15:49,881 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302589986] [2019-10-15 01:15:49,882 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-10-15 01:15:49,882 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:49,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-10-15 01:15:49,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2019-10-15 01:15:49,883 INFO L87 Difference]: Start difference. First operand 1916 states and 2733 transitions. Second operand 17 states. [2019-10-15 01:15:50,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:50,591 INFO L93 Difference]: Finished difference Result 2439 states and 3404 transitions. [2019-10-15 01:15:50,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-15 01:15:50,592 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 192 [2019-10-15 01:15:50,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:50,605 INFO L225 Difference]: With dead ends: 2439 [2019-10-15 01:15:50,605 INFO L226 Difference]: Without dead ends: 1915 [2019-10-15 01:15:50,609 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=829, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:15:50,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2019-10-15 01:15:50,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1914. [2019-10-15 01:15:50,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2019-10-15 01:15:50,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2728 transitions. [2019-10-15 01:15:50,696 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2728 transitions. Word has length 192 [2019-10-15 01:15:50,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:50,697 INFO L462 AbstractCegarLoop]: Abstraction has 1914 states and 2728 transitions. [2019-10-15 01:15:50,697 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-10-15 01:15:50,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2728 transitions. [2019-10-15 01:15:50,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-10-15 01:15:50,704 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:50,704 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] [2019-10-15 01:15:50,704 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:50,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:50,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1058572502, now seen corresponding path program 2 times [2019-10-15 01:15:50,705 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:50,705 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14505479] [2019-10-15 01:15:50,705 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:50,705 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:50,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:50,926 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:15:50,927 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14505479] [2019-10-15 01:15:50,927 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539857213] [2019-10-15 01:15:50,927 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:51,453 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:15:51,454 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:15:51,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 2032 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 01:15:51,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:51,681 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:15:51,681 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:52,200 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 01:15:52,200 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:15:52,201 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-10-15 01:15:52,201 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038288] [2019-10-15 01:15:52,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:15:52,203 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:52,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:15:52,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-10-15 01:15:52,204 INFO L87 Difference]: Start difference. First operand 1914 states and 2728 transitions. Second operand 14 states. [2019-10-15 01:15:54,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:54,118 INFO L93 Difference]: Finished difference Result 5694 states and 8227 transitions. [2019-10-15 01:15:54,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:15:54,118 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 192 [2019-10-15 01:15:54,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:54,159 INFO L225 Difference]: With dead ends: 5694 [2019-10-15 01:15:54,160 INFO L226 Difference]: Without dead ends: 5687 [2019-10-15 01:15:54,165 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 378 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-10-15 01:15:54,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5687 states. [2019-10-15 01:15:54,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5687 to 4542. [2019-10-15 01:15:54,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4542 states. [2019-10-15 01:15:54,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4542 states to 4542 states and 6736 transitions. [2019-10-15 01:15:54,432 INFO L78 Accepts]: Start accepts. Automaton has 4542 states and 6736 transitions. Word has length 192 [2019-10-15 01:15:54,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:54,432 INFO L462 AbstractCegarLoop]: Abstraction has 4542 states and 6736 transitions. [2019-10-15 01:15:54,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:15:54,433 INFO L276 IsEmpty]: Start isEmpty. Operand 4542 states and 6736 transitions. [2019-10-15 01:15:54,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-10-15 01:15:54,452 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:54,453 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2019-10-15 01:15:54,660 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:54,661 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:54,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:54,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1305984047, now seen corresponding path program 1 times [2019-10-15 01:15:54,662 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:54,662 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257918409] [2019-10-15 01:15:54,663 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:54,663 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:54,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:55,090 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-15 01:15:55,091 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257918409] [2019-10-15 01:15:55,091 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400047833] [2019-10-15 01:15:55,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:55,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 2729 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:15:55,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:56,100 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 01:15:56,100 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:15:56,448 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:15:56,535 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:56,609 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:15:56,710 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 01:15:56,711 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:15:56,711 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 9] total 24 [2019-10-15 01:15:56,711 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024435215] [2019-10-15 01:15:56,712 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:15:56,712 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:15:56,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:15:56,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2019-10-15 01:15:56,713 INFO L87 Difference]: Start difference. First operand 4542 states and 6736 transitions. Second operand 9 states. [2019-10-15 01:15:58,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:15:58,135 INFO L93 Difference]: Finished difference Result 9058 states and 13446 transitions. [2019-10-15 01:15:58,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:15:58,135 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 194 [2019-10-15 01:15:58,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:15:58,165 INFO L225 Difference]: With dead ends: 9058 [2019-10-15 01:15:58,165 INFO L226 Difference]: Without dead ends: 4560 [2019-10-15 01:15:58,182 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 372 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2019-10-15 01:15:58,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4560 states. [2019-10-15 01:15:58,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4560 to 4560. [2019-10-15 01:15:58,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4560 states. [2019-10-15 01:15:58,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 6757 transitions. [2019-10-15 01:15:58,438 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 6757 transitions. Word has length 194 [2019-10-15 01:15:58,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:15:58,438 INFO L462 AbstractCegarLoop]: Abstraction has 4560 states and 6757 transitions. [2019-10-15 01:15:58,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:15:58,439 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 6757 transitions. [2019-10-15 01:15:58,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-15 01:15:58,461 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:15:58,461 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2019-10-15 01:15:58,678 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:58,678 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:15:58,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:15:58,679 INFO L82 PathProgramCache]: Analyzing trace with hash -765804134, now seen corresponding path program 1 times [2019-10-15 01:15:58,679 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:15:58,679 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141675914] [2019-10-15 01:15:58,680 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:58,680 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:15:58,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:15:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:58,896 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-15 01:15:58,896 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141675914] [2019-10-15 01:15:58,897 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784461675] [2019-10-15 01:15:58,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:15:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:15:59,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 2730 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:15:59,542 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:15:59,757 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 01:15:59,758 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:16:00,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:16:00,088 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:16:00,141 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:16:00,142 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:16:00,142 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 7] total 20 [2019-10-15 01:16:00,142 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192904052] [2019-10-15 01:16:00,143 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:16:00,143 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:00,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:16:00,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:16:00,144 INFO L87 Difference]: Start difference. First operand 4560 states and 6757 transitions. Second operand 7 states. [2019-10-15 01:16:01,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:01,157 INFO L93 Difference]: Finished difference Result 9028 states and 13411 transitions. [2019-10-15 01:16:01,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:16:01,157 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2019-10-15 01:16:01,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:01,184 INFO L225 Difference]: With dead ends: 9028 [2019-10-15 01:16:01,184 INFO L226 Difference]: Without dead ends: 4560 [2019-10-15 01:16:01,203 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 379 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2019-10-15 01:16:01,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4560 states. [2019-10-15 01:16:01,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4560 to 4560. [2019-10-15 01:16:01,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4560 states. [2019-10-15 01:16:01,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 6735 transitions. [2019-10-15 01:16:01,433 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 6735 transitions. Word has length 195 [2019-10-15 01:16:01,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:01,434 INFO L462 AbstractCegarLoop]: Abstraction has 4560 states and 6735 transitions. [2019-10-15 01:16:01,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:16:01,434 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 6735 transitions. [2019-10-15 01:16:01,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-15 01:16:01,458 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:01,458 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] [2019-10-15 01:16:01,666 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:16:01,667 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:01,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:01,667 INFO L82 PathProgramCache]: Analyzing trace with hash 516423493, now seen corresponding path program 1 times [2019-10-15 01:16:01,668 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:01,668 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626906768] [2019-10-15 01:16:01,668 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:01,668 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:01,668 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:01,907 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:16:01,907 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626906768] [2019-10-15 01:16:01,907 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967441970] [2019-10-15 01:16:01,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:16:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:02,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 2725 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:16:02,459 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:16:02,563 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:16:02,563 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:16:02,852 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:16:02,887 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:16:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:16:02,930 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:16:02,931 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:16:02,931 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487121694] [2019-10-15 01:16:02,932 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:16:02,932 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:02,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:16:02,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:16:02,933 INFO L87 Difference]: Start difference. First operand 4560 states and 6735 transitions. Second operand 7 states. [2019-10-15 01:16:04,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:04,350 INFO L93 Difference]: Finished difference Result 8329 states and 12164 transitions. [2019-10-15 01:16:04,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:16:04,350 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2019-10-15 01:16:04,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:04,377 INFO L225 Difference]: With dead ends: 8329 [2019-10-15 01:16:04,377 INFO L226 Difference]: Without dead ends: 4572 [2019-10-15 01:16:04,393 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 381 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:16:04,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4572 states. [2019-10-15 01:16:05,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4572 to 4560. [2019-10-15 01:16:05,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4560 states. [2019-10-15 01:16:05,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4560 states to 4560 states and 6733 transitions. [2019-10-15 01:16:05,106 INFO L78 Accepts]: Start accepts. Automaton has 4560 states and 6733 transitions. Word has length 196 [2019-10-15 01:16:05,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:05,107 INFO L462 AbstractCegarLoop]: Abstraction has 4560 states and 6733 transitions. [2019-10-15 01:16:05,107 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:16:05,107 INFO L276 IsEmpty]: Start isEmpty. Operand 4560 states and 6733 transitions. [2019-10-15 01:16:05,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-10-15 01:16:05,125 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:05,125 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:16:05,334 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:16:05,334 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:05,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:05,335 INFO L82 PathProgramCache]: Analyzing trace with hash -17378578, now seen corresponding path program 1 times [2019-10-15 01:16:05,335 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:05,335 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996461334] [2019-10-15 01:16:05,336 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:05,336 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:05,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:05,499 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:16:05,499 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996461334] [2019-10-15 01:16:05,499 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773587900] [2019-10-15 01:16:05,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:16:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:16:06,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 2723 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:16:06,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:16:06,278 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:16:06,278 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:16:06,714 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:16:06,790 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:16:06,853 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:16:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:16:06,971 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:16:06,971 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-15 01:16:06,971 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729563846] [2019-10-15 01:16:06,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:16:06,972 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:16:06,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:16:06,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:16:06,973 INFO L87 Difference]: Start difference. First operand 4560 states and 6733 transitions. Second operand 16 states. [2019-10-15 01:16:08,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:16:08,444 INFO L93 Difference]: Finished difference Result 9056 states and 13393 transitions. [2019-10-15 01:16:08,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:16:08,444 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 197 [2019-10-15 01:16:08,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:16:08,465 INFO L225 Difference]: With dead ends: 9056 [2019-10-15 01:16:08,465 INFO L226 Difference]: Without dead ends: 4582 [2019-10-15 01:16:08,482 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 378 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:16:08,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4582 states. [2019-10-15 01:16:08,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4582 to 4580. [2019-10-15 01:16:08,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4580 states. [2019-10-15 01:16:08,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4580 states to 4580 states and 6755 transitions. [2019-10-15 01:16:08,710 INFO L78 Accepts]: Start accepts. Automaton has 4580 states and 6755 transitions. Word has length 197 [2019-10-15 01:16:08,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:16:08,711 INFO L462 AbstractCegarLoop]: Abstraction has 4580 states and 6755 transitions. [2019-10-15 01:16:08,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:16:08,711 INFO L276 IsEmpty]: Start isEmpty. Operand 4580 states and 6755 transitions. [2019-10-15 01:16:08,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-10-15 01:16:08,740 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:16:08,740 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:16:08,950 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:16:08,950 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:16:08,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:16:08,951 INFO L82 PathProgramCache]: Analyzing trace with hash -523782877, now seen corresponding path program 2 times [2019-10-15 01:16:08,951 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:16:08,951 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101611131] [2019-10-15 01:16:08,951 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:08,952 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:16:08,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:16:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat