/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_spec6_product15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:53:02,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:53:02,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:53:02,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:53:02,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:53:02,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:53:02,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:53:02,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:53:02,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:53:02,056 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:53:02,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:53:02,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:53:02,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:53:02,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:53:02,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:53:02,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:53:02,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:53:02,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:53:02,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:53:02,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:53:02,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:53:02,085 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:53:02,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:53:02,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:53:02,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:53:02,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:53:02,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:53:02,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:53:02,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:53:02,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:53:02,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:53:02,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:53:02,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:53:02,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:53:02,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:53:02,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:53:02,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:53:02,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:53:02,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:53:02,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:53:02,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:53:02,107 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 00:53:02,121 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:53:02,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:53:02,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:53:02,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:53:02,123 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:53:02,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:53:02,123 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:53:02,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:53:02,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:53:02,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:53:02,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:53:02,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:53:02,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:53:02,125 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:53:02,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:53:02,125 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:53:02,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:53:02,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:53:02,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:53:02,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:53:02,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:53:02,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:53:02,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:53:02,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:53:02,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:53:02,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:53:02,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:53:02,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:53:02,128 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 00:53:02,461 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:53:02,482 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:53:02,486 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:53:02,487 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:53:02,488 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:53:02,488 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec6_product15.cil.c [2019-11-07 00:53:02,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0b84e721/8bda50799420418fbc65dc00786b2704/FLAG9d07f95c6 [2019-11-07 00:53:03,255 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:53:03,258 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product15.cil.c [2019-11-07 00:53:03,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0b84e721/8bda50799420418fbc65dc00786b2704/FLAG9d07f95c6 [2019-11-07 00:53:03,367 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0b84e721/8bda50799420418fbc65dc00786b2704 [2019-11-07 00:53:03,377 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:53:03,379 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:53:03,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:53:03,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:53:03,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:53:03,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:03" (1/1) ... [2019-11-07 00:53:03,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f87abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:03, skipping insertion in model container [2019-11-07 00:53:03,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:03" (1/1) ... [2019-11-07 00:53:03,397 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:53:03,479 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:53:04,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:53:04,188 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:53:04,337 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:53:04,421 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:53:04,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:04 WrapperNode [2019-11-07 00:53:04,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:53:04,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:53:04,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:53:04,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:53:04,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:04" (1/1) ... [2019-11-07 00:53:04,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:04" (1/1) ... [2019-11-07 00:53:04,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:04" (1/1) ... [2019-11-07 00:53:04,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:04" (1/1) ... [2019-11-07 00:53:04,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:04" (1/1) ... [2019-11-07 00:53:04,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:04" (1/1) ... [2019-11-07 00:53:04,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:04" (1/1) ... [2019-11-07 00:53:04,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:53:04,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:53:04,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:53:04,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:53:04,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:04" (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 00:53:04,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:53:04,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:53:04,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:53:04,724 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:53:04,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:53:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:53:04,726 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:53:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:53:04,727 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:53:04,728 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:53:04,728 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AutoResponder [2019-11-07 00:53:04,728 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:53:04,728 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:53:04,729 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:53:04,729 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:53:04,729 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:53:04,732 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:53:04,732 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:53:04,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:53:04,732 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:53:04,732 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:53:04,733 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:53:04,733 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:53:04,733 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:53:04,733 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:53:04,733 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:53:04,734 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:53:04,734 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:53:04,734 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:53:04,734 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:53:04,735 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:53:04,735 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:53:04,735 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:53:04,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:53:04,735 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:53:04,736 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:53:04,736 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:53:04,736 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:53:04,737 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:53:04,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:53:04,737 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:53:04,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:53:04,737 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:53:04,738 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:53:04,738 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:53:04,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:53:04,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:53:04,738 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:53:04,739 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:53:04,739 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:53:04,739 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:53:04,739 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:53:04,739 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:53:04,740 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:53:04,741 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:53:04,741 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:53:04,741 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:53:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:53:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:53:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:53:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:53:04,742 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:53:04,743 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:53:04,743 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:53:04,744 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:53:04,744 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:53:04,744 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:53:04,744 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:53:04,744 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:53:04,744 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:53:04,745 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:53:04,745 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:53:04,745 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:53:04,746 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:53:04,746 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:53:04,746 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:53:04,746 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:53:04,746 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:53:04,747 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:53:04,747 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:53:04,748 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:53:04,748 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:53:04,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptDecrypt_spec__1 [2019-11-07 00:53:04,748 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptDecrypt_spec__2 [2019-11-07 00:53:04,748 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:53:04,749 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:53:04,749 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:53:04,749 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:53:04,750 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:53:04,750 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:53:04,750 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:53:04,750 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:53:04,750 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:53:04,750 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:53:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:53:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:53:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:53:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:53:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:53:04,751 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:53:04,752 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:53:04,752 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:53:04,752 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:53:04,752 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:53:04,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:53:04,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:53:04,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:53:04,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:53:04,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:53:04,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:53:04,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:53:04,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:53:04,754 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:53:04,754 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:53:04,754 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:53:04,754 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:53:04,754 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:53:04,755 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:53:04,755 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:53:04,755 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:53:04,756 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:53:04,756 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:53:04,756 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:53:04,757 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:53:04,757 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:53:04,758 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:53:04,758 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:53:04,758 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:53:04,758 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:53:04,758 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:53:04,758 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:53:04,759 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:53:04,759 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:53:04,759 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:53:04,759 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:53:04,760 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:53:04,760 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:53:04,763 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:53:04,764 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:53:04,764 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:53:04,764 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:53:04,764 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:53:04,765 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:53:04,765 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:53:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:53:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:53:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:53:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:53:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:53:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:53:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:53:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:53:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:53:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptDecrypt_spec__1 [2019-11-07 00:53:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:53:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:53:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:53:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AutoResponder [2019-11-07 00:53:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptDecrypt_spec__2 [2019-11-07 00:53:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:53:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:53:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:53:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:53:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:53:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:53:04,776 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:53:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:53:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:53:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:53:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:53:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:53:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:53:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:53:04,777 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:53:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:53:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:53:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:53:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:53:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:53:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:53:04,778 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:53:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:53:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:53:04,779 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:53:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:53:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:53:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:53:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:53:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:53:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:53:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:53:04,780 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:53:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:53:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:53:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:53:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:53:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:53:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:53:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:53:04,781 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:53:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:53:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:53:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:53:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:53:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:53:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:53:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:53:04,782 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:53:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:53:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:53:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:53:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:53:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:53:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:53:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:53:04,783 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:53:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:53:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:53:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:53:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:53:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:53:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:53:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:53:04,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:53:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:53:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:53:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:53:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:53:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:53:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:53:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:53:04,785 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:53:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:53:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:53:04,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:53:07,201 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:53:07,201 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:53:07,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:07 BoogieIcfgContainer [2019-11-07 00:53:07,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:53:07,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:53:07,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:53:07,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:53:07,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:53:03" (1/3) ... [2019-11-07 00:53:07,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7527bded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:53:07, skipping insertion in model container [2019-11-07 00:53:07,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:04" (2/3) ... [2019-11-07 00:53:07,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7527bded and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:53:07, skipping insertion in model container [2019-11-07 00:53:07,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:07" (3/3) ... [2019-11-07 00:53:07,213 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec6_product15.cil.c [2019-11-07 00:53:07,224 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:53:07,235 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:53:07,247 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:53:07,290 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:53:07,290 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:53:07,290 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:53:07,290 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:53:07,290 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:53:07,291 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:53:07,291 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:53:07,291 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:53:07,331 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states. [2019-11-07 00:53:07,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2019-11-07 00:53:07,360 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:07,361 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:07,366 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:07,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:07,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1208653577, now seen corresponding path program 1 times [2019-11-07 00:53:07,388 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:07,389 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657042425] [2019-11-07 00:53:07,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:08,087 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:53:08,088 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657042425] [2019-11-07 00:53:08,089 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:08,089 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:53:08,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51662847] [2019-11-07 00:53:08,096 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:53:08,097 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:08,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:53:08,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:53:08,116 INFO L87 Difference]: Start difference. First operand 474 states. Second operand 2 states. [2019-11-07 00:53:08,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:08,187 INFO L93 Difference]: Finished difference Result 642 states and 852 transitions. [2019-11-07 00:53:08,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:53:08,189 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 176 [2019-11-07 00:53:08,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:08,234 INFO L225 Difference]: With dead ends: 642 [2019-11-07 00:53:08,234 INFO L226 Difference]: Without dead ends: 427 [2019-11-07 00:53:08,245 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 00:53:08,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2019-11-07 00:53:08,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2019-11-07 00:53:08,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2019-11-07 00:53:08,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 570 transitions. [2019-11-07 00:53:08,384 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 570 transitions. Word has length 176 [2019-11-07 00:53:08,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:08,386 INFO L462 AbstractCegarLoop]: Abstraction has 427 states and 570 transitions. [2019-11-07 00:53:08,386 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:53:08,386 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 570 transitions. [2019-11-07 00:53:08,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-11-07 00:53:08,392 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:08,392 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:08,392 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:08,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:08,393 INFO L82 PathProgramCache]: Analyzing trace with hash -819004996, now seen corresponding path program 1 times [2019-11-07 00:53:08,393 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:08,393 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124207534] [2019-11-07 00:53:08,394 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:08,660 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:53:08,660 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124207534] [2019-11-07 00:53:08,661 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:08,661 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:53:08,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018403393] [2019-11-07 00:53:08,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:53:08,676 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:08,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:53:08,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:53:08,682 INFO L87 Difference]: Start difference. First operand 427 states and 570 transitions. Second operand 3 states. [2019-11-07 00:53:08,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:08,757 INFO L93 Difference]: Finished difference Result 625 states and 820 transitions. [2019-11-07 00:53:08,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:53:08,758 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2019-11-07 00:53:08,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:08,767 INFO L225 Difference]: With dead ends: 625 [2019-11-07 00:53:08,768 INFO L226 Difference]: Without dead ends: 430 [2019-11-07 00:53:08,773 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 00:53:08,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2019-11-07 00:53:08,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 429. [2019-11-07 00:53:08,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2019-11-07 00:53:08,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 572 transitions. [2019-11-07 00:53:08,816 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 572 transitions. Word has length 177 [2019-11-07 00:53:08,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:08,817 INFO L462 AbstractCegarLoop]: Abstraction has 429 states and 572 transitions. [2019-11-07 00:53:08,817 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:53:08,817 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 572 transitions. [2019-11-07 00:53:08,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-11-07 00:53:08,823 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:08,824 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:08,824 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:08,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:08,825 INFO L82 PathProgramCache]: Analyzing trace with hash 2130216492, now seen corresponding path program 1 times [2019-11-07 00:53:08,825 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:08,825 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542290636] [2019-11-07 00:53:08,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:09,096 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:53:09,097 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542290636] [2019-11-07 00:53:09,097 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:09,098 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:53:09,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891086830] [2019-11-07 00:53:09,101 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:53:09,104 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:09,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:53:09,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:53:09,105 INFO L87 Difference]: Start difference. First operand 429 states and 572 transitions. Second operand 3 states. [2019-11-07 00:53:09,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:09,167 INFO L93 Difference]: Finished difference Result 834 states and 1142 transitions. [2019-11-07 00:53:09,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:53:09,168 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2019-11-07 00:53:09,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:09,177 INFO L225 Difference]: With dead ends: 834 [2019-11-07 00:53:09,177 INFO L226 Difference]: Without dead ends: 470 [2019-11-07 00:53:09,179 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 00:53:09,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2019-11-07 00:53:09,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 469. [2019-11-07 00:53:09,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2019-11-07 00:53:09,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 641 transitions. [2019-11-07 00:53:09,214 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 641 transitions. Word has length 187 [2019-11-07 00:53:09,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:09,214 INFO L462 AbstractCegarLoop]: Abstraction has 469 states and 641 transitions. [2019-11-07 00:53:09,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:53:09,215 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 641 transitions. [2019-11-07 00:53:09,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-11-07 00:53:09,223 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:09,224 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:09,224 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:09,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:09,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1179138555, now seen corresponding path program 1 times [2019-11-07 00:53:09,225 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:09,226 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184233345] [2019-11-07 00:53:09,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:09,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:09,407 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:53:09,408 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184233345] [2019-11-07 00:53:09,408 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:09,408 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:53:09,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96074799] [2019-11-07 00:53:09,409 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:53:09,409 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:09,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:53:09,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:53:09,410 INFO L87 Difference]: Start difference. First operand 469 states and 641 transitions. Second operand 3 states. [2019-11-07 00:53:09,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:09,442 INFO L93 Difference]: Finished difference Result 951 states and 1344 transitions. [2019-11-07 00:53:09,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:53:09,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2019-11-07 00:53:09,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:09,448 INFO L225 Difference]: With dead ends: 951 [2019-11-07 00:53:09,449 INFO L226 Difference]: Without dead ends: 547 [2019-11-07 00:53:09,450 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 00:53:09,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2019-11-07 00:53:09,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 546. [2019-11-07 00:53:09,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2019-11-07 00:53:09,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 773 transitions. [2019-11-07 00:53:09,484 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 773 transitions. Word has length 188 [2019-11-07 00:53:09,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:09,485 INFO L462 AbstractCegarLoop]: Abstraction has 546 states and 773 transitions. [2019-11-07 00:53:09,485 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:53:09,485 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 773 transitions. [2019-11-07 00:53:09,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-11-07 00:53:09,490 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:09,490 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:09,490 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:09,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:09,491 INFO L82 PathProgramCache]: Analyzing trace with hash -2052303444, now seen corresponding path program 1 times [2019-11-07 00:53:09,491 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:09,492 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65843290] [2019-11-07 00:53:09,492 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:09,725 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:53:09,726 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65843290] [2019-11-07 00:53:09,726 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:09,726 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:53:09,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019250837] [2019-11-07 00:53:09,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:53:09,728 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:09,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:53:09,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:53:09,730 INFO L87 Difference]: Start difference. First operand 546 states and 773 transitions. Second operand 3 states. [2019-11-07 00:53:09,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:09,782 INFO L93 Difference]: Finished difference Result 1176 states and 1730 transitions. [2019-11-07 00:53:09,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:53:09,783 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2019-11-07 00:53:09,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:09,788 INFO L225 Difference]: With dead ends: 1176 [2019-11-07 00:53:09,788 INFO L226 Difference]: Without dead ends: 695 [2019-11-07 00:53:09,790 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 00:53:09,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2019-11-07 00:53:09,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 694. [2019-11-07 00:53:09,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2019-11-07 00:53:09,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 1025 transitions. [2019-11-07 00:53:09,833 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 1025 transitions. Word has length 189 [2019-11-07 00:53:09,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:09,833 INFO L462 AbstractCegarLoop]: Abstraction has 694 states and 1025 transitions. [2019-11-07 00:53:09,833 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:53:09,833 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 1025 transitions. [2019-11-07 00:53:09,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-11-07 00:53:09,838 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:09,838 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:09,838 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:09,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:09,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1144858235, now seen corresponding path program 1 times [2019-11-07 00:53:09,839 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:09,839 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114682858] [2019-11-07 00:53:09,839 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:09,994 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:53:09,994 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114682858] [2019-11-07 00:53:09,996 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:09,996 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:53:09,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636673920] [2019-11-07 00:53:09,997 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:53:09,997 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:09,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:53:09,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:53:09,998 INFO L87 Difference]: Start difference. First operand 694 states and 1025 transitions. Second operand 3 states. [2019-11-07 00:53:10,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:10,052 INFO L93 Difference]: Finished difference Result 1608 states and 2466 transitions. [2019-11-07 00:53:10,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:53:10,053 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2019-11-07 00:53:10,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:10,063 INFO L225 Difference]: With dead ends: 1608 [2019-11-07 00:53:10,064 INFO L226 Difference]: Without dead ends: 979 [2019-11-07 00:53:10,067 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 00:53:10,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2019-11-07 00:53:10,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 978. [2019-11-07 00:53:10,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2019-11-07 00:53:10,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1505 transitions. [2019-11-07 00:53:10,182 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1505 transitions. Word has length 190 [2019-11-07 00:53:10,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:10,183 INFO L462 AbstractCegarLoop]: Abstraction has 978 states and 1505 transitions. [2019-11-07 00:53:10,183 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:53:10,183 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1505 transitions. [2019-11-07 00:53:10,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-11-07 00:53:10,190 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:10,190 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:10,191 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:10,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:10,191 INFO L82 PathProgramCache]: Analyzing trace with hash -862158447, now seen corresponding path program 1 times [2019-11-07 00:53:10,191 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:10,191 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305817717] [2019-11-07 00:53:10,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:10,491 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:53:10,492 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305817717] [2019-11-07 00:53:10,492 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:10,492 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-07 00:53:10,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621435053] [2019-11-07 00:53:10,493 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:53:10,493 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:10,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:53:10,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:53:10,494 INFO L87 Difference]: Start difference. First operand 978 states and 1505 transitions. Second operand 11 states. [2019-11-07 00:53:14,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:14,395 INFO L93 Difference]: Finished difference Result 2434 states and 3435 transitions. [2019-11-07 00:53:14,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-11-07 00:53:14,396 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 193 [2019-11-07 00:53:14,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:14,414 INFO L225 Difference]: With dead ends: 2434 [2019-11-07 00:53:14,414 INFO L226 Difference]: Without dead ends: 2059 [2019-11-07 00:53:14,418 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=802, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:53:14,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2019-11-07 00:53:14,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 2044. [2019-11-07 00:53:14,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2044 states. [2019-11-07 00:53:14,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 2886 transitions. [2019-11-07 00:53:14,575 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 2886 transitions. Word has length 193 [2019-11-07 00:53:14,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:14,576 INFO L462 AbstractCegarLoop]: Abstraction has 2044 states and 2886 transitions. [2019-11-07 00:53:14,576 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 00:53:14,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 2886 transitions. [2019-11-07 00:53:14,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-11-07 00:53:14,587 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:14,588 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:14,588 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:14,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:14,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1182728700, now seen corresponding path program 1 times [2019-11-07 00:53:14,589 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:14,589 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342256995] [2019-11-07 00:53:14,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:14,991 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:53:14,992 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342256995] [2019-11-07 00:53:14,992 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:14,992 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-11-07 00:53:14,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650512136] [2019-11-07 00:53:14,995 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:53:14,996 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:14,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:53:14,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:53:14,997 INFO L87 Difference]: Start difference. First operand 2044 states and 2886 transitions. Second operand 16 states. [2019-11-07 00:53:15,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:15,547 INFO L93 Difference]: Finished difference Result 3086 states and 4232 transitions. [2019-11-07 00:53:15,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-07 00:53:15,548 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 194 [2019-11-07 00:53:15,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:15,567 INFO L225 Difference]: With dead ends: 3086 [2019-11-07 00:53:15,567 INFO L226 Difference]: Without dead ends: 1774 [2019-11-07 00:53:15,647 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-11-07 00:53:15,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2019-11-07 00:53:15,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1695. [2019-11-07 00:53:15,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1695 states. [2019-11-07 00:53:15,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 2422 transitions. [2019-11-07 00:53:15,791 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 2422 transitions. Word has length 194 [2019-11-07 00:53:15,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:15,795 INFO L462 AbstractCegarLoop]: Abstraction has 1695 states and 2422 transitions. [2019-11-07 00:53:15,795 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:53:15,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 2422 transitions. [2019-11-07 00:53:15,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-11-07 00:53:15,807 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:15,808 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:15,808 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:15,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:15,809 INFO L82 PathProgramCache]: Analyzing trace with hash 2089057104, now seen corresponding path program 1 times [2019-11-07 00:53:15,809 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:15,809 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520922695] [2019-11-07 00:53:15,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:53:16,082 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520922695] [2019-11-07 00:53:16,083 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:16,084 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:53:16,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906990474] [2019-11-07 00:53:16,087 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:53:16,087 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:16,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:53:16,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:53:16,088 INFO L87 Difference]: Start difference. First operand 1695 states and 2422 transitions. Second operand 6 states. [2019-11-07 00:53:16,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:16,833 INFO L93 Difference]: Finished difference Result 4252 states and 6012 transitions. [2019-11-07 00:53:16,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:53:16,834 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 203 [2019-11-07 00:53:16,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:16,857 INFO L225 Difference]: With dead ends: 4252 [2019-11-07 00:53:16,857 INFO L226 Difference]: Without dead ends: 3381 [2019-11-07 00:53:16,861 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 00:53:16,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3381 states. [2019-11-07 00:53:17,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3381 to 3310. [2019-11-07 00:53:17,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3310 states. [2019-11-07 00:53:17,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3310 states to 3310 states and 4816 transitions. [2019-11-07 00:53:17,064 INFO L78 Accepts]: Start accepts. Automaton has 3310 states and 4816 transitions. Word has length 203 [2019-11-07 00:53:17,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:17,065 INFO L462 AbstractCegarLoop]: Abstraction has 3310 states and 4816 transitions. [2019-11-07 00:53:17,065 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:53:17,065 INFO L276 IsEmpty]: Start isEmpty. Operand 3310 states and 4816 transitions. [2019-11-07 00:53:17,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-11-07 00:53:17,076 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:17,077 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:17,077 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:17,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:17,077 INFO L82 PathProgramCache]: Analyzing trace with hash -80625117, now seen corresponding path program 1 times [2019-11-07 00:53:17,078 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:17,078 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110417760] [2019-11-07 00:53:17,078 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:17,268 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:53:17,268 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110417760] [2019-11-07 00:53:17,269 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:17,269 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:53:17,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146241504] [2019-11-07 00:53:17,271 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:53:17,271 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:17,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:53:17,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:53:17,272 INFO L87 Difference]: Start difference. First operand 3310 states and 4816 transitions. Second operand 5 states. [2019-11-07 00:53:18,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:18,397 INFO L93 Difference]: Finished difference Result 10095 states and 14251 transitions. [2019-11-07 00:53:18,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:53:18,398 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2019-11-07 00:53:18,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:18,456 INFO L225 Difference]: With dead ends: 10095 [2019-11-07 00:53:18,456 INFO L226 Difference]: Without dead ends: 8364 [2019-11-07 00:53:18,472 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 00:53:18,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8364 states. [2019-11-07 00:53:19,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8364 to 8228. [2019-11-07 00:53:19,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8228 states. [2019-11-07 00:53:19,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8228 states to 8228 states and 11880 transitions. [2019-11-07 00:53:19,103 INFO L78 Accepts]: Start accepts. Automaton has 8228 states and 11880 transitions. Word has length 204 [2019-11-07 00:53:19,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:19,104 INFO L462 AbstractCegarLoop]: Abstraction has 8228 states and 11880 transitions. [2019-11-07 00:53:19,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:53:19,104 INFO L276 IsEmpty]: Start isEmpty. Operand 8228 states and 11880 transitions. [2019-11-07 00:53:19,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-11-07 00:53:19,127 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:19,128 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:19,128 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:19,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:19,128 INFO L82 PathProgramCache]: Analyzing trace with hash -667401236, now seen corresponding path program 1 times [2019-11-07 00:53:19,129 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:19,129 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636327976] [2019-11-07 00:53:19,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:19,309 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:53:19,309 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636327976] [2019-11-07 00:53:19,309 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:19,310 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:53:19,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056164751] [2019-11-07 00:53:19,310 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:53:19,311 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:19,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:53:19,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:53:19,311 INFO L87 Difference]: Start difference. First operand 8228 states and 11880 transitions. Second operand 9 states. [2019-11-07 00:53:19,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:19,876 INFO L93 Difference]: Finished difference Result 12193 states and 16859 transitions. [2019-11-07 00:53:19,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:53:19,877 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 204 [2019-11-07 00:53:19,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:19,923 INFO L225 Difference]: With dead ends: 12193 [2019-11-07 00:53:19,923 INFO L226 Difference]: Without dead ends: 7324 [2019-11-07 00:53:19,939 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-11-07 00:53:19,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7324 states. [2019-11-07 00:53:20,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7324 to 7143. [2019-11-07 00:53:20,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7143 states. [2019-11-07 00:53:20,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7143 states to 7143 states and 10470 transitions. [2019-11-07 00:53:20,925 INFO L78 Accepts]: Start accepts. Automaton has 7143 states and 10470 transitions. Word has length 204 [2019-11-07 00:53:20,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:20,926 INFO L462 AbstractCegarLoop]: Abstraction has 7143 states and 10470 transitions. [2019-11-07 00:53:20,926 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:53:20,926 INFO L276 IsEmpty]: Start isEmpty. Operand 7143 states and 10470 transitions. [2019-11-07 00:53:20,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2019-11-07 00:53:20,950 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:20,950 INFO L410 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 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 00:53:20,950 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:20,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:20,951 INFO L82 PathProgramCache]: Analyzing trace with hash -341043388, now seen corresponding path program 1 times [2019-11-07 00:53:20,951 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:20,951 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466732960] [2019-11-07 00:53:20,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:53:21,162 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466732960] [2019-11-07 00:53:21,162 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:21,163 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:53:21,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269229028] [2019-11-07 00:53:21,163 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:53:21,163 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:21,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:53:21,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:53:21,164 INFO L87 Difference]: Start difference. First operand 7143 states and 10470 transitions. Second operand 8 states. [2019-11-07 00:53:25,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:25,509 INFO L93 Difference]: Finished difference Result 21795 states and 34408 transitions. [2019-11-07 00:53:25,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-07 00:53:25,509 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 241 [2019-11-07 00:53:25,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:25,608 INFO L225 Difference]: With dead ends: 21795 [2019-11-07 00:53:25,608 INFO L226 Difference]: Without dead ends: 14717 [2019-11-07 00:53:25,640 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2019-11-07 00:53:25,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14717 states. [2019-11-07 00:53:26,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14717 to 10431. [2019-11-07 00:53:26,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10431 states. [2019-11-07 00:53:26,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10431 states to 10431 states and 17390 transitions. [2019-11-07 00:53:26,367 INFO L78 Accepts]: Start accepts. Automaton has 10431 states and 17390 transitions. Word has length 241 [2019-11-07 00:53:26,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:26,368 INFO L462 AbstractCegarLoop]: Abstraction has 10431 states and 17390 transitions. [2019-11-07 00:53:26,368 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:53:26,368 INFO L276 IsEmpty]: Start isEmpty. Operand 10431 states and 17390 transitions. [2019-11-07 00:53:26,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-11-07 00:53:26,436 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:26,436 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:26,437 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:26,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:26,437 INFO L82 PathProgramCache]: Analyzing trace with hash -790262356, now seen corresponding path program 1 times [2019-11-07 00:53:26,437 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:26,438 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262576044] [2019-11-07 00:53:26,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:53:26,650 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262576044] [2019-11-07 00:53:26,650 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:26,651 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:53:26,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892410508] [2019-11-07 00:53:26,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:53:26,652 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:26,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:53:26,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:53:26,653 INFO L87 Difference]: Start difference. First operand 10431 states and 17390 transitions. Second operand 8 states. [2019-11-07 00:53:30,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:30,960 INFO L93 Difference]: Finished difference Result 32195 states and 58424 transitions. [2019-11-07 00:53:30,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-07 00:53:30,961 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 227 [2019-11-07 00:53:30,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:31,087 INFO L225 Difference]: With dead ends: 32195 [2019-11-07 00:53:31,087 INFO L226 Difference]: Without dead ends: 21829 [2019-11-07 00:53:31,165 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2019-11-07 00:53:31,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21829 states. [2019-11-07 00:53:32,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21829 to 17127. [2019-11-07 00:53:32,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17127 states. [2019-11-07 00:53:32,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17127 states to 17127 states and 32574 transitions. [2019-11-07 00:53:32,310 INFO L78 Accepts]: Start accepts. Automaton has 17127 states and 32574 transitions. Word has length 227 [2019-11-07 00:53:32,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:32,310 INFO L462 AbstractCegarLoop]: Abstraction has 17127 states and 32574 transitions. [2019-11-07 00:53:32,310 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:53:32,311 INFO L276 IsEmpty]: Start isEmpty. Operand 17127 states and 32574 transitions. [2019-11-07 00:53:32,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-11-07 00:53:32,429 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:32,429 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:32,430 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:32,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:32,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1621648930, now seen corresponding path program 1 times [2019-11-07 00:53:32,430 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:32,431 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568589322] [2019-11-07 00:53:32,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:32,668 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:53:32,669 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568589322] [2019-11-07 00:53:32,669 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:32,669 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:53:32,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978641695] [2019-11-07 00:53:32,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:53:32,670 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:32,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:53:32,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:53:32,671 INFO L87 Difference]: Start difference. First operand 17127 states and 32574 transitions. Second operand 8 states.