/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec7_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:54:34,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:54:34,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:54:34,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:54:34,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:54:34,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:54:34,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:54:34,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:54:34,204 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:54:34,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:54:34,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:54:34,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:54:34,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:54:34,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:54:34,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:54:34,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:54:34,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:54:34,220 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:54:34,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:54:34,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:54:34,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:54:34,234 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:54:34,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:54:34,237 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:54:34,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:54:34,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:54:34,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:54:34,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:54:34,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:54:34,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:54:34,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:54:34,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:54:34,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:54:34,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:54:34,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:54:34,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:54:34,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:54:34,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:54:34,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:54:34,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:54:34,251 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:54:34,252 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:54:34,280 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:54:34,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:54:34,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:54:34,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:54:34,286 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:54:34,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:54:34,287 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:54:34,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:54:34,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:54:34,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:54:34,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:54:34,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:54:34,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:54:34,289 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:54:34,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:54:34,290 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:54:34,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:54:34,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:54:34,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:54:34,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:54:34,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:54:34,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:54:34,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:54:34,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:54:34,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:54:34,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:54:34,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:54:34,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:54:34,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:54:34,551 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:54:34,564 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:54:34,568 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:54:34,569 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:54:34,569 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:54:34,570 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec7_product30.cil.c [2019-11-07 00:54:34,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2d265329/473b7f8757a8490787efd7763e757c9b/FLAG11a61fd70 [2019-11-07 00:54:35,284 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:54:35,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product30.cil.c [2019-11-07 00:54:35,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2d265329/473b7f8757a8490787efd7763e757c9b/FLAG11a61fd70 [2019-11-07 00:54:35,490 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2d265329/473b7f8757a8490787efd7763e757c9b [2019-11-07 00:54:35,502 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:54:35,504 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:54:35,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:54:35,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:54:35,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:54:35,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:35" (1/1) ... [2019-11-07 00:54:35,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c22ff71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:35, skipping insertion in model container [2019-11-07 00:54:35,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:54:35" (1/1) ... [2019-11-07 00:54:35,524 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:54:35,616 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:54:36,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:54:36,420 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:54:36,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:54:36,661 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:54:36,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:36 WrapperNode [2019-11-07 00:54:36,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:54:36,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:54:36,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:54:36,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:54:36,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:36" (1/1) ... [2019-11-07 00:54:36,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:36" (1/1) ... [2019-11-07 00:54:36,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:36" (1/1) ... [2019-11-07 00:54:36,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:36" (1/1) ... [2019-11-07 00:54:36,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:36" (1/1) ... [2019-11-07 00:54:36,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:36" (1/1) ... [2019-11-07 00:54:36,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:36" (1/1) ... [2019-11-07 00:54:36,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:54:36,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:54:36,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:54:36,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:54:36,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:54:36,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:54:36,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:54:36,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:54:36,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:54:36,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:54:36,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:54:36,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:54:36,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:54:36,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:54:36,940 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:54:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:54:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:54:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:54:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:54:36,942 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:54:36,942 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:54:36,942 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:54:36,942 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:54:36,943 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:54:36,943 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:54:36,943 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:54:36,943 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:54:36,944 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:54:36,944 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:54:36,944 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:54:36,944 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:54:36,945 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:54:36,945 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:54:36,945 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:54:36,945 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:54:36,946 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:54:36,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptVerify_spec__1 [2019-11-07 00:54:36,946 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:54:36,946 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:54:36,947 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:54:36,947 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:54:36,947 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:54:36,947 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:54:36,948 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:54:36,948 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:54:36,948 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:54:36,948 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:54:36,948 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:54:36,949 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:54:36,949 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:54:36,949 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:54:36,949 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:54:36,949 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:54:36,949 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:54:36,950 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:54:36,950 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:54:36,950 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:54:36,950 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:54:36,950 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:54:36,950 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:54:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:54:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:54:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:54:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:54:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:54:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:54:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:54:36,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:54:36,952 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:54:36,952 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:54:36,952 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:54:36,952 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:54:36,952 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:54:36,953 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:54:36,953 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:54:36,953 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:54:36,953 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:54:36,953 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:54:36,953 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:54:36,953 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:54:36,954 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:54:36,954 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:54:36,954 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:54:36,954 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:54:36,954 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:54:36,954 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:54:36,955 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:54:36,955 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:54:36,955 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:54:36,955 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:54:36,955 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:54:36,955 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:54:36,955 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:54:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-11-07 00:54:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-11-07 00:54:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:54:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:54:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:54:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:54:36,956 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:54:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:54:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:54:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:54:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:54:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:54:36,957 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:54:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:54:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:54:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:54:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:54:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:54:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:54:36,958 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:54:36,959 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:54:36,959 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:54:36,959 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:54:36,959 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:54:36,959 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:54:36,959 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:54:36,959 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:54:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:54:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:54:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:54:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:54:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:54:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:54:36,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:54:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:54:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:54:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:54:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:54:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:54:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:54:36,961 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:54:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:54:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:54:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:54:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:54:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:54:36,962 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:54:36,963 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:54:36,963 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:54:36,963 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:54:36,963 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:54:36,963 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:54:36,963 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:54:36,964 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:54:36,964 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:54:36,964 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:54:36,964 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:54:36,964 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:54:36,964 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:54:36,964 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:54:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:54:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:54:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:54:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:54:36,965 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:54:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:54:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:54:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:54:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:54:36,966 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:54:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:54:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:54:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:54:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:54:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:54:36,967 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:54:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:54:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:54:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:54:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptVerify_spec__1 [2019-11-07 00:54:36,968 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:54:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:54:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:54:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:54:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:54:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:54:36,969 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:54:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:54:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:54:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:54:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:54:36,970 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:54:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:54:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:54:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:54:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:54:36,971 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:54:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:54:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:54:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:54:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:54:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:54:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:54:36,972 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:54:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:54:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:54:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:54:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:54:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:54:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:54:36,973 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:54:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:54:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:54:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:54:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:54:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:54:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:54:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:54:36,974 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:54:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:54:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:54:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:54:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:54:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:54:36,975 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:54:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:54:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:54:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:54:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:54:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:54:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:54:36,976 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:54:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:54:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:54:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:54:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:54:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:54:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:54:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:54:36,977 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:54:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-11-07 00:54:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-11-07 00:54:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:54:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:54:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:54:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:54:36,978 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:54:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:54:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:54:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:54:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:54:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:54:36,979 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:54:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:54:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:54:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:54:36,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:54:39,087 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:54:39,088 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:54:39,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:39 BoogieIcfgContainer [2019-11-07 00:54:39,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:54:39,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:54:39,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:54:39,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:54:39,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:54:35" (1/3) ... [2019-11-07 00:54:39,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ecb20a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:54:39, skipping insertion in model container [2019-11-07 00:54:39,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:54:36" (2/3) ... [2019-11-07 00:54:39,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ecb20a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:54:39, skipping insertion in model container [2019-11-07 00:54:39,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:39" (3/3) ... [2019-11-07 00:54:39,099 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec7_product30.cil.c [2019-11-07 00:54:39,109 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:54:39,119 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:54:39,132 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:54:39,165 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:54:39,165 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:54:39,165 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:54:39,165 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:54:39,165 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:54:39,165 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:54:39,166 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:54:39,166 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:54:39,196 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states. [2019-11-07 00:54:39,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-11-07 00:54:39,216 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:54:39,218 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-07 00:54:39,220 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:54:39,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:54:39,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1131064280, now seen corresponding path program 1 times [2019-11-07 00:54:39,236 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:54:39,237 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636578632] [2019-11-07 00:54:39,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:54:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:54:39,959 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:54:39,960 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636578632] [2019-11-07 00:54:39,961 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:54:39,961 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:54:39,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283672373] [2019-11-07 00:54:39,968 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:54:39,969 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:54:39,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:54:39,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:54:39,987 INFO L87 Difference]: Start difference. First operand 540 states. Second operand 2 states. [2019-11-07 00:54:40,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:54:40,059 INFO L93 Difference]: Finished difference Result 766 states and 1013 transitions. [2019-11-07 00:54:40,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:54:40,060 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 182 [2019-11-07 00:54:40,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:54:40,082 INFO L225 Difference]: With dead ends: 766 [2019-11-07 00:54:40,082 INFO L226 Difference]: Without dead ends: 489 [2019-11-07 00:54:40,089 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:54:40,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2019-11-07 00:54:40,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2019-11-07 00:54:40,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2019-11-07 00:54:40,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 649 transitions. [2019-11-07 00:54:40,177 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 649 transitions. Word has length 182 [2019-11-07 00:54:40,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:54:40,180 INFO L462 AbstractCegarLoop]: Abstraction has 489 states and 649 transitions. [2019-11-07 00:54:40,180 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:54:40,180 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 649 transitions. [2019-11-07 00:54:40,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-11-07 00:54:40,189 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:54:40,189 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-07 00:54:40,190 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:54:40,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:54:40,192 INFO L82 PathProgramCache]: Analyzing trace with hash -2140358730, now seen corresponding path program 1 times [2019-11-07 00:54:40,192 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:54:40,193 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123970141] [2019-11-07 00:54:40,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:54:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:54:40,465 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:54:40,465 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123970141] [2019-11-07 00:54:40,466 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:54:40,466 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:54:40,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041536738] [2019-11-07 00:54:40,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:54:40,472 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:54:40,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:54:40,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:54:40,473 INFO L87 Difference]: Start difference. First operand 489 states and 649 transitions. Second operand 3 states. [2019-11-07 00:54:40,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:54:40,529 INFO L93 Difference]: Finished difference Result 749 states and 978 transitions. [2019-11-07 00:54:40,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:54:40,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2019-11-07 00:54:40,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:54:40,535 INFO L225 Difference]: With dead ends: 749 [2019-11-07 00:54:40,535 INFO L226 Difference]: Without dead ends: 492 [2019-11-07 00:54:40,537 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:54:40,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2019-11-07 00:54:40,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 491. [2019-11-07 00:54:40,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2019-11-07 00:54:40,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 651 transitions. [2019-11-07 00:54:40,582 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 651 transitions. Word has length 183 [2019-11-07 00:54:40,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:54:40,583 INFO L462 AbstractCegarLoop]: Abstraction has 491 states and 651 transitions. [2019-11-07 00:54:40,583 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:54:40,583 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 651 transitions. [2019-11-07 00:54:40,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-11-07 00:54:40,588 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:54:40,589 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:54:40,589 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:54:40,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:54:40,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1496766790, now seen corresponding path program 1 times [2019-11-07 00:54:40,590 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:54:40,590 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933973233] [2019-11-07 00:54:40,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:54:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:54:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:54:40,788 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933973233] [2019-11-07 00:54:40,788 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:54:40,789 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:54:40,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869731285] [2019-11-07 00:54:40,790 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:54:40,790 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:54:40,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:54:40,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:54:40,791 INFO L87 Difference]: Start difference. First operand 491 states and 651 transitions. Second operand 3 states. [2019-11-07 00:54:40,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:54:40,847 INFO L93 Difference]: Finished difference Result 958 states and 1300 transitions. [2019-11-07 00:54:40,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:54:40,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2019-11-07 00:54:40,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:54:40,857 INFO L225 Difference]: With dead ends: 958 [2019-11-07 00:54:40,857 INFO L226 Difference]: Without dead ends: 532 [2019-11-07 00:54:40,860 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:54:40,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2019-11-07 00:54:40,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 531. [2019-11-07 00:54:40,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2019-11-07 00:54:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 720 transitions. [2019-11-07 00:54:40,930 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 720 transitions. Word has length 193 [2019-11-07 00:54:40,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:54:40,933 INFO L462 AbstractCegarLoop]: Abstraction has 531 states and 720 transitions. [2019-11-07 00:54:40,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:54:40,933 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 720 transitions. [2019-11-07 00:54:40,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-11-07 00:54:40,947 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:54:40,948 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:54:40,948 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:54:40,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:54:40,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1227376246, now seen corresponding path program 1 times [2019-11-07 00:54:40,950 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:54:40,950 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655707842] [2019-11-07 00:54:40,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:54:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:54:41,346 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:54:41,347 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655707842] [2019-11-07 00:54:41,349 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:54:41,350 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:54:41,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530701477] [2019-11-07 00:54:41,353 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:54:41,355 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:54:41,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:54:41,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:54:41,360 INFO L87 Difference]: Start difference. First operand 531 states and 720 transitions. Second operand 3 states. [2019-11-07 00:54:41,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:54:41,408 INFO L93 Difference]: Finished difference Result 1075 states and 1502 transitions. [2019-11-07 00:54:41,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:54:41,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2019-11-07 00:54:41,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:54:41,415 INFO L225 Difference]: With dead ends: 1075 [2019-11-07 00:54:41,415 INFO L226 Difference]: Without dead ends: 609 [2019-11-07 00:54:41,417 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:54:41,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2019-11-07 00:54:41,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 608. [2019-11-07 00:54:41,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2019-11-07 00:54:41,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 852 transitions. [2019-11-07 00:54:41,453 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 852 transitions. Word has length 194 [2019-11-07 00:54:41,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:54:41,455 INFO L462 AbstractCegarLoop]: Abstraction has 608 states and 852 transitions. [2019-11-07 00:54:41,455 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:54:41,455 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 852 transitions. [2019-11-07 00:54:41,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-11-07 00:54:41,459 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:54:41,460 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:54:41,460 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:54:41,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:54:41,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1776385894, now seen corresponding path program 1 times [2019-11-07 00:54:41,461 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:54:41,461 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404780342] [2019-11-07 00:54:41,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:54:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:54:41,647 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:54:41,648 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404780342] [2019-11-07 00:54:41,648 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:54:41,648 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:54:41,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422053518] [2019-11-07 00:54:41,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:54:41,649 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:54:41,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:54:41,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:54:41,650 INFO L87 Difference]: Start difference. First operand 608 states and 852 transitions. Second operand 3 states. [2019-11-07 00:54:41,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:54:41,689 INFO L93 Difference]: Finished difference Result 1300 states and 1888 transitions. [2019-11-07 00:54:41,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:54:41,690 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 195 [2019-11-07 00:54:41,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:54:41,696 INFO L225 Difference]: With dead ends: 1300 [2019-11-07 00:54:41,696 INFO L226 Difference]: Without dead ends: 757 [2019-11-07 00:54:41,698 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:54:41,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2019-11-07 00:54:41,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 756. [2019-11-07 00:54:41,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2019-11-07 00:54:41,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 1104 transitions. [2019-11-07 00:54:41,737 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 1104 transitions. Word has length 195 [2019-11-07 00:54:41,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:54:41,737 INFO L462 AbstractCegarLoop]: Abstraction has 756 states and 1104 transitions. [2019-11-07 00:54:41,737 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:54:41,738 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 1104 transitions. [2019-11-07 00:54:41,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-11-07 00:54:41,742 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:54:41,743 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:54:41,743 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:54:41,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:54:41,743 INFO L82 PathProgramCache]: Analyzing trace with hash -2040028310, now seen corresponding path program 1 times [2019-11-07 00:54:41,744 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:54:41,744 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438565373] [2019-11-07 00:54:41,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:54:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:54:41,955 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:54:41,955 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438565373] [2019-11-07 00:54:41,956 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:54:41,956 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:54:41,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868803471] [2019-11-07 00:54:41,957 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:54:41,957 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:54:41,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:54:41,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:54:41,958 INFO L87 Difference]: Start difference. First operand 756 states and 1104 transitions. Second operand 3 states. [2019-11-07 00:54:42,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:54:42,001 INFO L93 Difference]: Finished difference Result 1732 states and 2624 transitions. [2019-11-07 00:54:42,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:54:42,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2019-11-07 00:54:42,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:54:42,009 INFO L225 Difference]: With dead ends: 1732 [2019-11-07 00:54:42,010 INFO L226 Difference]: Without dead ends: 1041 [2019-11-07 00:54:42,012 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:54:42,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2019-11-07 00:54:42,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1040. [2019-11-07 00:54:42,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1040 states. [2019-11-07 00:54:42,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1584 transitions. [2019-11-07 00:54:42,066 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1584 transitions. Word has length 196 [2019-11-07 00:54:42,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:54:42,068 INFO L462 AbstractCegarLoop]: Abstraction has 1040 states and 1584 transitions. [2019-11-07 00:54:42,068 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:54:42,068 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1584 transitions. [2019-11-07 00:54:42,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-11-07 00:54:42,074 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:54:42,074 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:54:42,075 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:54:42,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:54:42,075 INFO L82 PathProgramCache]: Analyzing trace with hash 662668678, now seen corresponding path program 1 times [2019-11-07 00:54:42,075 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:54:42,075 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548967389] [2019-11-07 00:54:42,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:54:42,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:54:42,241 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:54:42,241 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548967389] [2019-11-07 00:54:42,242 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:54:42,242 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:54:42,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588825701] [2019-11-07 00:54:42,243 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:54:42,243 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:54:42,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:54:42,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:54:42,244 INFO L87 Difference]: Start difference. First operand 1040 states and 1584 transitions. Second operand 3 states. [2019-11-07 00:54:42,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:54:42,312 INFO L93 Difference]: Finished difference Result 2560 states and 4024 transitions. [2019-11-07 00:54:42,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:54:42,312 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2019-11-07 00:54:42,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:54:42,326 INFO L225 Difference]: With dead ends: 2560 [2019-11-07 00:54:42,326 INFO L226 Difference]: Without dead ends: 1585 [2019-11-07 00:54:42,331 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:54:42,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2019-11-07 00:54:42,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1584. [2019-11-07 00:54:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2019-11-07 00:54:42,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2496 transitions. [2019-11-07 00:54:42,430 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2496 transitions. Word has length 197 [2019-11-07 00:54:42,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:54:42,431 INFO L462 AbstractCegarLoop]: Abstraction has 1584 states and 2496 transitions. [2019-11-07 00:54:42,431 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:54:42,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2496 transitions. [2019-11-07 00:54:42,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-11-07 00:54:42,557 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:54:42,558 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:54:42,558 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:54:42,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:54:42,559 INFO L82 PathProgramCache]: Analyzing trace with hash 2098370244, now seen corresponding path program 1 times [2019-11-07 00:54:42,559 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:54:42,559 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210402822] [2019-11-07 00:54:42,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:54:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:54:43,070 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-11-07 00:54:43,071 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210402822] [2019-11-07 00:54:43,071 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:54:43,071 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-11-07 00:54:43,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52808306] [2019-11-07 00:54:43,073 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-07 00:54:43,073 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:54:43,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-07 00:54:43,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:54:43,074 INFO L87 Difference]: Start difference. First operand 1584 states and 2496 transitions. Second operand 19 states. [2019-11-07 00:54:47,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:54:47,560 INFO L93 Difference]: Finished difference Result 3933 states and 6147 transitions. [2019-11-07 00:54:47,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-11-07 00:54:47,560 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 199 [2019-11-07 00:54:47,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:54:47,592 INFO L225 Difference]: With dead ends: 3933 [2019-11-07 00:54:47,593 INFO L226 Difference]: Without dead ends: 3689 [2019-11-07 00:54:47,597 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2019-11-07 00:54:47,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3689 states. [2019-11-07 00:54:47,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3689 to 3652. [2019-11-07 00:54:47,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3652 states. [2019-11-07 00:54:47,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 5771 transitions. [2019-11-07 00:54:47,813 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 5771 transitions. Word has length 199 [2019-11-07 00:54:47,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:54:47,814 INFO L462 AbstractCegarLoop]: Abstraction has 3652 states and 5771 transitions. [2019-11-07 00:54:47,814 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-07 00:54:47,814 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 5771 transitions. [2019-11-07 00:54:47,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-11-07 00:54:47,842 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:54:47,843 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-07 00:54:47,843 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:54:47,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:54:47,844 INFO L82 PathProgramCache]: Analyzing trace with hash 2086662794, now seen corresponding path program 1 times [2019-11-07 00:54:47,844 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:54:47,844 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832497924] [2019-11-07 00:54:47,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:54:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:54:48,294 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-11-07 00:54:48,295 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832497924] [2019-11-07 00:54:48,296 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:54:48,296 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-11-07 00:54:48,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641585322] [2019-11-07 00:54:48,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:54:48,299 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:54:48,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:54:48,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-11-07 00:54:48,300 INFO L87 Difference]: Start difference. First operand 3652 states and 5771 transitions. Second operand 15 states. [2019-11-07 00:54:51,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:54:51,972 INFO L93 Difference]: Finished difference Result 4781 states and 7296 transitions. [2019-11-07 00:54:51,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-11-07 00:54:51,977 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 200 [2019-11-07 00:54:51,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:54:52,002 INFO L225 Difference]: With dead ends: 4781 [2019-11-07 00:54:52,003 INFO L226 Difference]: Without dead ends: 3754 [2019-11-07 00:54:52,008 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2019-11-07 00:54:52,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2019-11-07 00:54:52,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 3722. [2019-11-07 00:54:52,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3722 states. [2019-11-07 00:54:52,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3722 states to 3722 states and 5883 transitions. [2019-11-07 00:54:52,189 INFO L78 Accepts]: Start accepts. Automaton has 3722 states and 5883 transitions. Word has length 200 [2019-11-07 00:54:52,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:54:52,189 INFO L462 AbstractCegarLoop]: Abstraction has 3722 states and 5883 transitions. [2019-11-07 00:54:52,190 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:54:52,190 INFO L276 IsEmpty]: Start isEmpty. Operand 3722 states and 5883 transitions. [2019-11-07 00:54:52,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-11-07 00:54:52,208 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:54:52,208 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:54:52,209 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:54:52,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:54:52,209 INFO L82 PathProgramCache]: Analyzing trace with hash -159485995, now seen corresponding path program 1 times [2019-11-07 00:54:52,209 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:54:52,209 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963401029] [2019-11-07 00:54:52,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:54:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:54:52,355 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-11-07 00:54:52,355 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963401029] [2019-11-07 00:54:52,356 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:54:52,356 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:54:52,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783322291] [2019-11-07 00:54:52,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:54:52,357 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:54:52,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:54:52,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:54:52,358 INFO L87 Difference]: Start difference. First operand 3722 states and 5883 transitions. Second operand 5 states. [2019-11-07 00:54:52,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:54:52,501 INFO L93 Difference]: Finished difference Result 4540 states and 6954 transitions. [2019-11-07 00:54:52,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:54:52,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2019-11-07 00:54:52,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:54:52,526 INFO L225 Difference]: With dead ends: 4540 [2019-11-07 00:54:52,527 INFO L226 Difference]: Without dead ends: 3428 [2019-11-07 00:54:52,537 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:54:52,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3428 states. [2019-11-07 00:54:52,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3428 to 3428. [2019-11-07 00:54:52,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3428 states. [2019-11-07 00:54:52,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3428 states to 3428 states and 5479 transitions. [2019-11-07 00:54:52,698 INFO L78 Accepts]: Start accepts. Automaton has 3428 states and 5479 transitions. Word has length 203 [2019-11-07 00:54:52,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:54:52,698 INFO L462 AbstractCegarLoop]: Abstraction has 3428 states and 5479 transitions. [2019-11-07 00:54:52,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:54:52,698 INFO L276 IsEmpty]: Start isEmpty. Operand 3428 states and 5479 transitions. [2019-11-07 00:54:52,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-11-07 00:54:52,713 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:54:52,714 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-07 00:54:52,714 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:54:52,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:54:52,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1989327825, now seen corresponding path program 1 times [2019-11-07 00:54:52,715 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:54:52,715 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095549509] [2019-11-07 00:54:52,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:54:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:54:53,022 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-11-07 00:54:53,023 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095549509] [2019-11-07 00:54:53,023 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:54:53,023 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-11-07 00:54:53,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442314524] [2019-11-07 00:54:53,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:54:53,024 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:54:53,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:54:53,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:54:53,025 INFO L87 Difference]: Start difference. First operand 3428 states and 5479 transitions. Second operand 16 states. [2019-11-07 00:54:53,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:54:53,447 INFO L93 Difference]: Finished difference Result 4318 states and 6665 transitions. [2019-11-07 00:54:53,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-07 00:54:53,448 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 200 [2019-11-07 00:54:53,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:54:53,476 INFO L225 Difference]: With dead ends: 4318 [2019-11-07 00:54:53,476 INFO L226 Difference]: Without dead ends: 3480 [2019-11-07 00:54:53,483 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-11-07 00:54:53,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2019-11-07 00:54:53,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 3462. [2019-11-07 00:54:53,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3462 states. [2019-11-07 00:54:53,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3462 states to 3462 states and 5522 transitions. [2019-11-07 00:54:53,645 INFO L78 Accepts]: Start accepts. Automaton has 3462 states and 5522 transitions. Word has length 200 [2019-11-07 00:54:53,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:54:53,646 INFO L462 AbstractCegarLoop]: Abstraction has 3462 states and 5522 transitions. [2019-11-07 00:54:53,646 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:54:53,646 INFO L276 IsEmpty]: Start isEmpty. Operand 3462 states and 5522 transitions. [2019-11-07 00:54:53,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-11-07 00:54:53,661 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:54:53,662 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:54:53,662 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:54:53,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:54:53,662 INFO L82 PathProgramCache]: Analyzing trace with hash 22885179, now seen corresponding path program 1 times [2019-11-07 00:54:53,663 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:54:53,663 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014527658] [2019-11-07 00:54:53,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:54:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:54:53,848 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:54:53,849 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014527658] [2019-11-07 00:54:53,849 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:54:53,849 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:54:53,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977715222] [2019-11-07 00:54:53,850 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:54:53,850 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:54:53,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:54:53,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:54:53,851 INFO L87 Difference]: Start difference. First operand 3462 states and 5522 transitions. Second operand 5 states. [2019-11-07 00:54:54,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:54:54,957 INFO L93 Difference]: Finished difference Result 6692 states and 10472 transitions. [2019-11-07 00:54:54,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:54:54,958 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 200 [2019-11-07 00:54:54,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:54:55,024 INFO L225 Difference]: With dead ends: 6692 [2019-11-07 00:54:55,024 INFO L226 Difference]: Without dead ends: 6123 [2019-11-07 00:54:55,030 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:54:55,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6123 states. [2019-11-07 00:54:55,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6123 to 6092. [2019-11-07 00:54:55,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6092 states. [2019-11-07 00:54:55,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6092 states to 6092 states and 9655 transitions. [2019-11-07 00:54:55,291 INFO L78 Accepts]: Start accepts. Automaton has 6092 states and 9655 transitions. Word has length 200 [2019-11-07 00:54:55,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:54:55,291 INFO L462 AbstractCegarLoop]: Abstraction has 6092 states and 9655 transitions. [2019-11-07 00:54:55,291 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:54:55,292 INFO L276 IsEmpty]: Start isEmpty. Operand 6092 states and 9655 transitions. [2019-11-07 00:54:55,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-11-07 00:54:55,316 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:54:55,316 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:54:55,317 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:54:55,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:54:55,317 INFO L82 PathProgramCache]: Analyzing trace with hash 43222554, now seen corresponding path program 1 times [2019-11-07 00:54:55,318 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:54:55,318 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544761110] [2019-11-07 00:54:55,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:54:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:54:55,516 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:54:55,516 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544761110] [2019-11-07 00:54:55,516 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:54:55,516 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:54:55,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880745834] [2019-11-07 00:54:55,517 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:54:55,518 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:54:55,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:54:55,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:54:55,518 INFO L87 Difference]: Start difference. First operand 6092 states and 9655 transitions. Second operand 7 states. [2019-11-07 00:54:57,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:54:57,360 INFO L93 Difference]: Finished difference Result 12518 states and 18483 transitions. [2019-11-07 00:54:57,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-07 00:54:57,364 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 200 [2019-11-07 00:54:57,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:54:57,410 INFO L225 Difference]: With dead ends: 12518 [2019-11-07 00:54:57,410 INFO L226 Difference]: Without dead ends: 10442 [2019-11-07 00:54:57,424 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:54:57,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10442 states. [2019-11-07 00:54:57,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10442 to 10420. [2019-11-07 00:54:57,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10420 states. [2019-11-07 00:54:57,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10420 states to 10420 states and 15548 transitions. [2019-11-07 00:54:57,870 INFO L78 Accepts]: Start accepts. Automaton has 10420 states and 15548 transitions. Word has length 200 [2019-11-07 00:54:57,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:54:57,870 INFO L462 AbstractCegarLoop]: Abstraction has 10420 states and 15548 transitions. [2019-11-07 00:54:57,871 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:54:57,871 INFO L276 IsEmpty]: Start isEmpty. Operand 10420 states and 15548 transitions. [2019-11-07 00:54:57,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-11-07 00:54:57,899 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:54:57,900 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:54:57,900 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:54:57,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:54:57,900 INFO L82 PathProgramCache]: Analyzing trace with hash 16236281, now seen corresponding path program 1 times [2019-11-07 00:54:57,901 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:54:57,901 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864999917] [2019-11-07 00:54:57,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:54:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:54:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:54:58,528 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864999917] [2019-11-07 00:54:58,529 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:54:58,529 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-11-07 00:54:58,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864444294] [2019-11-07 00:54:58,529 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-11-07 00:54:58,530 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:54:58,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-11-07 00:54:58,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2019-11-07 00:54:58,531 INFO L87 Difference]: Start difference. First operand 10420 states and 15548 transitions. Second operand 26 states. [2019-11-07 00:54:59,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:54:59,509 INFO L93 Difference]: Finished difference Result 17040 states and 24717 transitions. [2019-11-07 00:54:59,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-07 00:54:59,509 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 201 [2019-11-07 00:54:59,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:54:59,553 INFO L225 Difference]: With dead ends: 17040 [2019-11-07 00:54:59,553 INFO L226 Difference]: Without dead ends: 9548 [2019-11-07 00:54:59,580 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=93, Invalid=1239, Unknown=0, NotChecked=0, Total=1332 [2019-11-07 00:54:59,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9548 states. [2019-11-07 00:54:59,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9548 to 9415. [2019-11-07 00:54:59,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9415 states. [2019-11-07 00:55:00,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9415 states to 9415 states and 14191 transitions. [2019-11-07 00:55:00,753 INFO L78 Accepts]: Start accepts. Automaton has 9415 states and 14191 transitions. Word has length 201 [2019-11-07 00:55:00,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:00,754 INFO L462 AbstractCegarLoop]: Abstraction has 9415 states and 14191 transitions. [2019-11-07 00:55:00,754 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-11-07 00:55:00,754 INFO L276 IsEmpty]: Start isEmpty. Operand 9415 states and 14191 transitions. [2019-11-07 00:55:00,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-11-07 00:55:00,784 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:00,784 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:00,785 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:00,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:00,785 INFO L82 PathProgramCache]: Analyzing trace with hash -953853226, now seen corresponding path program 1 times [2019-11-07 00:55:00,785 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:00,786 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844541463] [2019-11-07 00:55:00,786 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:01,003 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:55:01,003 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844541463] [2019-11-07 00:55:01,003 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:01,004 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-11-07 00:55:01,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285371702] [2019-11-07 00:55:01,004 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 00:55:01,005 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:01,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 00:55:01,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:55:01,005 INFO L87 Difference]: Start difference. First operand 9415 states and 14191 transitions. Second operand 10 states. [2019-11-07 00:55:01,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:01,232 INFO L93 Difference]: Finished difference Result 9468 states and 14257 transitions. [2019-11-07 00:55:01,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:55:01,233 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 205 [2019-11-07 00:55:01,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:01,267 INFO L225 Difference]: With dead ends: 9468 [2019-11-07 00:55:01,268 INFO L226 Difference]: Without dead ends: 9385 [2019-11-07 00:55:01,276 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:55:01,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9385 states. [2019-11-07 00:55:01,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9385 to 9381. [2019-11-07 00:55:01,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9381 states. [2019-11-07 00:55:01,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9381 states to 9381 states and 14121 transitions. [2019-11-07 00:55:01,659 INFO L78 Accepts]: Start accepts. Automaton has 9381 states and 14121 transitions. Word has length 205 [2019-11-07 00:55:01,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:01,660 INFO L462 AbstractCegarLoop]: Abstraction has 9381 states and 14121 transitions. [2019-11-07 00:55:01,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 00:55:01,660 INFO L276 IsEmpty]: Start isEmpty. Operand 9381 states and 14121 transitions. [2019-11-07 00:55:01,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2019-11-07 00:55:01,681 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:01,681 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:01,681 INFO L410 AbstractCegarLoop]: === Iteration 16 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:01,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:01,682 INFO L82 PathProgramCache]: Analyzing trace with hash -979270205, now seen corresponding path program 1 times [2019-11-07 00:55:01,682 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:01,682 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542842944] [2019-11-07 00:55:01,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:01,825 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:55:01,825 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542842944] [2019-11-07 00:55:01,825 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:01,826 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:55:01,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856790554] [2019-11-07 00:55:01,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:55:01,827 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:01,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:55:01,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:55:01,827 INFO L87 Difference]: Start difference. First operand 9381 states and 14121 transitions. Second operand 5 states. [2019-11-07 00:55:02,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:02,025 INFO L93 Difference]: Finished difference Result 13693 states and 19771 transitions. [2019-11-07 00:55:02,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:55:02,025 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 210 [2019-11-07 00:55:02,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:02,144 INFO L225 Difference]: With dead ends: 13693 [2019-11-07 00:55:02,144 INFO L226 Difference]: Without dead ends: 9530 [2019-11-07 00:55:02,157 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:55:02,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9530 states. [2019-11-07 00:55:02,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9530 to 9463. [2019-11-07 00:55:02,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9463 states. [2019-11-07 00:55:02,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9463 states to 9463 states and 14226 transitions. [2019-11-07 00:55:02,558 INFO L78 Accepts]: Start accepts. Automaton has 9463 states and 14226 transitions. Word has length 210 [2019-11-07 00:55:02,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:02,559 INFO L462 AbstractCegarLoop]: Abstraction has 9463 states and 14226 transitions. [2019-11-07 00:55:02,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:55:02,559 INFO L276 IsEmpty]: Start isEmpty. Operand 9463 states and 14226 transitions. [2019-11-07 00:55:02,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2019-11-07 00:55:02,577 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:02,577 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:02,577 INFO L410 AbstractCegarLoop]: === Iteration 17 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:02,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:02,578 INFO L82 PathProgramCache]: Analyzing trace with hash 181926907, now seen corresponding path program 1 times [2019-11-07 00:55:02,578 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:02,578 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870778678] [2019-11-07 00:55:02,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:02,788 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:55:02,788 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870778678] [2019-11-07 00:55:02,788 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:02,789 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-07 00:55:02,789 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069154694] [2019-11-07 00:55:02,790 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:55:02,790 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:02,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:55:02,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:55:02,790 INFO L87 Difference]: Start difference. First operand 9463 states and 14226 transitions. Second operand 11 states. [2019-11-07 00:55:03,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:03,275 INFO L93 Difference]: Finished difference Result 13676 states and 19698 transitions. [2019-11-07 00:55:03,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 00:55:03,276 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 210 [2019-11-07 00:55:03,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:03,312 INFO L225 Difference]: With dead ends: 13676 [2019-11-07 00:55:03,312 INFO L226 Difference]: Without dead ends: 9461 [2019-11-07 00:55:03,328 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:55:03,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9461 states. [2019-11-07 00:55:03,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9461 to 9425. [2019-11-07 00:55:03,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9425 states. [2019-11-07 00:55:03,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9425 states to 9425 states and 14144 transitions. [2019-11-07 00:55:03,873 INFO L78 Accepts]: Start accepts. Automaton has 9425 states and 14144 transitions. Word has length 210 [2019-11-07 00:55:03,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:55:03,874 INFO L462 AbstractCegarLoop]: Abstraction has 9425 states and 14144 transitions. [2019-11-07 00:55:03,874 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 00:55:03,874 INFO L276 IsEmpty]: Start isEmpty. Operand 9425 states and 14144 transitions. [2019-11-07 00:55:03,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-11-07 00:55:03,890 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:55:03,890 INFO L410 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:55:03,891 INFO L410 AbstractCegarLoop]: === Iteration 18 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:55:03,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:55:03,891 INFO L82 PathProgramCache]: Analyzing trace with hash 370927849, now seen corresponding path program 1 times [2019-11-07 00:55:03,891 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:55:03,891 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559329895] [2019-11-07 00:55:03,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:55:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:55:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:55:04,045 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559329895] [2019-11-07 00:55:04,045 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:55:04,045 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:55:04,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11065715] [2019-11-07 00:55:04,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:55:04,046 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:55:04,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:55:04,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:55:04,047 INFO L87 Difference]: Start difference. First operand 9425 states and 14144 transitions. Second operand 6 states. [2019-11-07 00:55:05,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:55:05,151 INFO L93 Difference]: Finished difference Result 23626 states and 35165 transitions. [2019-11-07 00:55:05,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:55:05,152 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2019-11-07 00:55:05,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:55:05,248 INFO L225 Difference]: With dead ends: 23626 [2019-11-07 00:55:05,248 INFO L226 Difference]: Without dead ends: 18833 [2019-11-07 00:55:05,275 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:55:05,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18833 states.