/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_spec11_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:47:16,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:47:16,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:47:16,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:47:16,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:47:16,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:47:16,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:47:16,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:47:16,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:47:16,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:47:16,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:47:16,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:47:16,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:47:16,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:47:16,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:47:16,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:47:16,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:47:16,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:47:16,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:47:16,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:47:16,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:47:16,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:47:16,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:47:16,656 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:47:16,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:47:16,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:47:16,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:47:16,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:47:16,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:47:16,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:47:16,664 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:47:16,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:47:16,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:47:16,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:47:16,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:47:16,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:47:16,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:47:16,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:47:16,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:47:16,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:47:16,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:47:16,671 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 00:47:16,704 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:47:16,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:47:16,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:47:16,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:47:16,710 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:47:16,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:47:16,710 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:47:16,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:47:16,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:47:16,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:47:16,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:47:16,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:47:16,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:47:16,713 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:47:16,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:47:16,714 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:47:16,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:47:16,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:47:16,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:47:16,715 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:47:16,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:47:16,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:47:16,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:47:16,715 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:47:16,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:47:16,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:47:16,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:47:16,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:47:16,717 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 00:47:16,993 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:47:17,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:47:17,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:47:17,015 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:47:17,016 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:47:17,016 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product30.cil.c [2019-11-07 00:47:17,096 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05fdd7825/154469a585374f6a84d2a522dd0ef7fe/FLAG0cffd4f8e [2019-11-07 00:47:17,754 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:47:17,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product30.cil.c [2019-11-07 00:47:17,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05fdd7825/154469a585374f6a84d2a522dd0ef7fe/FLAG0cffd4f8e [2019-11-07 00:47:17,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05fdd7825/154469a585374f6a84d2a522dd0ef7fe [2019-11-07 00:47:17,931 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:47:17,933 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:47:17,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:47:17,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:47:17,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:47:17,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:47:17" (1/1) ... [2019-11-07 00:47:17,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab00c9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:17, skipping insertion in model container [2019-11-07 00:47:17,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:47:17" (1/1) ... [2019-11-07 00:47:17,953 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:47:18,033 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:47:18,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:47:18,925 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:47:19,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:47:19,161 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:47:19,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:19 WrapperNode [2019-11-07 00:47:19,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:47:19,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:47:19,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:47:19,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:47:19,175 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:19" (1/1) ... [2019-11-07 00:47:19,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:19" (1/1) ... [2019-11-07 00:47:19,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:19" (1/1) ... [2019-11-07 00:47:19,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:19" (1/1) ... [2019-11-07 00:47:19,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:19" (1/1) ... [2019-11-07 00:47:19,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:19" (1/1) ... [2019-11-07 00:47:19,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:19" (1/1) ... [2019-11-07 00:47:19,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:47:19,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:47:19,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:47:19,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:47:19,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:19" (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 00:47:19,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:47:19,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:47:19,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:47:19,411 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:47:19,411 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:47:19,411 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:47:19,411 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:47:19,412 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:47:19,412 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:47:19,412 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:47:19,412 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:47:19,413 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:47:19,413 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:47:19,413 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:47:19,413 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:47:19,414 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:47:19,414 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:47:19,414 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:47:19,414 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:47:19,415 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:47:19,416 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:47:19,416 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:47:19,416 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:47:19,416 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:47:19,417 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:47:19,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__DecryptAutoResponder_spec__1 [2019-11-07 00:47:19,417 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:47:19,417 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:47:19,417 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:47:19,417 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:47:19,418 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:47:19,418 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:47:19,418 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:47:19,418 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:47:19,418 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:47:19,419 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:47:19,419 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:47:19,419 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:47:19,419 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:47:19,419 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:47:19,419 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:47:19,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:47:19,420 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:47:19,420 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:47:19,420 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:47:19,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:47:19,421 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:47:19,421 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:47:19,421 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-11-07 00:47:19,421 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-11-07 00:47:19,421 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:47:19,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:47:19,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:47:19,422 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:47:19,422 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:47:19,422 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:47:19,422 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:47:19,423 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:47:19,423 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:47:19,423 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:47:19,423 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:47:19,423 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:47:19,424 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:47:19,424 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:47:19,424 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:47:19,424 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:47:19,424 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:47:19,424 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:47:19,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:47:19,425 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:47:19,425 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:47:19,425 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:47:19,425 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:47:19,425 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:47:19,425 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:47:19,426 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:47:19,426 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:47:19,426 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:47:19,426 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:47:19,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:47:19,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:47:19,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:47:19,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:47:19,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:47:19,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:47:19,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:47:19,427 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:47:19,427 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:47:19,428 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:47:19,428 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:47:19,428 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:47:19,428 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:47:19,428 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:47:19,428 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:47:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:47:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:47:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:47:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:47:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:47:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:47:19,429 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:47:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:47:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:47:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:47:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:47:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:47:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:47:19,430 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:47:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:47:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:47:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:47:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:47:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:47:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:47:19,431 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:47:19,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:47:19,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:47:19,432 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:47:19,432 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:47:19,432 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:47:19,432 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:47:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:47:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:47:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:47:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:47:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:47:19,433 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:47:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:47:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:47:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:47:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:47:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:47:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:47:19,434 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:47:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:47:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:47:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:47:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:47:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:47:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:47:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:47:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:47:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:47:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:47:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:47:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:47:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:47:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:47:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:47:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:47:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:47:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:47:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:47:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:47:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:47:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:47:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:47:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:47:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:47:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:47:19,438 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:47:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__DecryptAutoResponder_spec__1 [2019-11-07 00:47:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:47:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:47:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:47:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:47:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:47:19,439 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:47:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:47:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:47:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:47:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:47:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:47:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:47:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:47:19,440 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:47:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:47:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:47:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:47:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:47:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:47:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:47:19,441 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:47:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:47:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:47:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-11-07 00:47:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-11-07 00:47:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:47:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:47:19,442 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:47:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:47:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:47:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:47:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:47:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:47:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:47:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:47:19,443 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:47:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:47:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:47:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:47:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:47:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:47:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:47:19,444 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:47:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:47:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:47:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:47:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:47:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:47:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:47:19,445 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:47:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:47:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:47:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:47:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:47:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:47:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:47:19,446 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:47:19,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:47:19,447 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:47:19,447 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:47:19,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:47:19,447 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:47:19,447 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:47:19,447 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:47:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:47:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:47:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:47:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:47:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:47:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:47:19,448 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:47:19,449 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:47:19,449 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:47:19,449 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:47:19,449 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:47:19,449 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:47:19,449 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:47:19,449 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:47:19,449 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:47:19,450 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:47:19,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:47:19,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:47:19,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:47:21,811 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:47:21,811 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:47:21,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:47:21 BoogieIcfgContainer [2019-11-07 00:47:21,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:47:21,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:47:21,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:47:21,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:47:21,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:47:17" (1/3) ... [2019-11-07 00:47:21,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378c1700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:47:21, skipping insertion in model container [2019-11-07 00:47:21,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:47:19" (2/3) ... [2019-11-07 00:47:21,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378c1700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:47:21, skipping insertion in model container [2019-11-07 00:47:21,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:47:21" (3/3) ... [2019-11-07 00:47:21,822 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec11_product30.cil.c [2019-11-07 00:47:21,832 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:47:21,841 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:47:21,853 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:47:21,882 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:47:21,882 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:47:21,882 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:47:21,882 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:47:21,883 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:47:21,883 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:47:21,883 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:47:21,883 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:47:21,912 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states. [2019-11-07 00:47:21,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-11-07 00:47:21,948 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:21,952 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:21,955 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:21,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:21,961 INFO L82 PathProgramCache]: Analyzing trace with hash 235603723, now seen corresponding path program 1 times [2019-11-07 00:47:21,971 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:21,971 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712432715] [2019-11-07 00:47:21,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:22,635 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-11-07 00:47:22,636 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712432715] [2019-11-07 00:47:22,637 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:22,637 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:47:22,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894942979] [2019-11-07 00:47:22,645 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:47:22,647 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:22,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:47:22,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:47:22,664 INFO L87 Difference]: Start difference. First operand 541 states. Second operand 2 states. [2019-11-07 00:47:22,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:22,767 INFO L93 Difference]: Finished difference Result 768 states and 1016 transitions. [2019-11-07 00:47:22,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:47:22,769 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 216 [2019-11-07 00:47:22,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:22,799 INFO L225 Difference]: With dead ends: 768 [2019-11-07 00:47:22,800 INFO L226 Difference]: Without dead ends: 490 [2019-11-07 00:47:22,810 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 00:47:22,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2019-11-07 00:47:22,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2019-11-07 00:47:22,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2019-11-07 00:47:22,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 650 transitions. [2019-11-07 00:47:22,913 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 650 transitions. Word has length 216 [2019-11-07 00:47:22,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:22,917 INFO L462 AbstractCegarLoop]: Abstraction has 490 states and 650 transitions. [2019-11-07 00:47:22,918 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:47:22,918 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 650 transitions. [2019-11-07 00:47:22,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-11-07 00:47:22,927 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:22,928 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:22,928 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:22,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:22,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1056183382, now seen corresponding path program 1 times [2019-11-07 00:47:22,929 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:22,929 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872537215] [2019-11-07 00:47:22,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:23,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:23,239 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-11-07 00:47:23,240 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872537215] [2019-11-07 00:47:23,240 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:23,241 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:47:23,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792831387] [2019-11-07 00:47:23,243 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:47:23,244 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:23,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:47:23,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:23,244 INFO L87 Difference]: Start difference. First operand 490 states and 650 transitions. Second operand 3 states. [2019-11-07 00:47:23,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:23,298 INFO L93 Difference]: Finished difference Result 751 states and 980 transitions. [2019-11-07 00:47:23,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:47:23,299 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 217 [2019-11-07 00:47:23,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:23,306 INFO L225 Difference]: With dead ends: 751 [2019-11-07 00:47:23,306 INFO L226 Difference]: Without dead ends: 493 [2019-11-07 00:47:23,308 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 00:47:23,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2019-11-07 00:47:23,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 492. [2019-11-07 00:47:23,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 492 states. [2019-11-07 00:47:23,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 652 transitions. [2019-11-07 00:47:23,351 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 652 transitions. Word has length 217 [2019-11-07 00:47:23,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:23,352 INFO L462 AbstractCegarLoop]: Abstraction has 492 states and 652 transitions. [2019-11-07 00:47:23,352 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:47:23,352 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 652 transitions. [2019-11-07 00:47:23,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-11-07 00:47:23,359 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:23,360 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:23,360 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:23,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:23,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1277940166, now seen corresponding path program 1 times [2019-11-07 00:47:23,361 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:23,361 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388590185] [2019-11-07 00:47:23,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-11-07 00:47:23,607 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388590185] [2019-11-07 00:47:23,608 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:23,608 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:47:23,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932665770] [2019-11-07 00:47:23,609 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:47:23,610 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:23,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:47:23,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:23,611 INFO L87 Difference]: Start difference. First operand 492 states and 652 transitions. Second operand 3 states. [2019-11-07 00:47:23,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:23,651 INFO L93 Difference]: Finished difference Result 960 states and 1302 transitions. [2019-11-07 00:47:23,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:47:23,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 227 [2019-11-07 00:47:23,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:23,656 INFO L225 Difference]: With dead ends: 960 [2019-11-07 00:47:23,656 INFO L226 Difference]: Without dead ends: 533 [2019-11-07 00:47:23,659 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 00:47:23,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2019-11-07 00:47:23,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 532. [2019-11-07 00:47:23,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2019-11-07 00:47:23,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 721 transitions. [2019-11-07 00:47:23,691 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 721 transitions. Word has length 227 [2019-11-07 00:47:23,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:23,692 INFO L462 AbstractCegarLoop]: Abstraction has 532 states and 721 transitions. [2019-11-07 00:47:23,692 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:47:23,692 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 721 transitions. [2019-11-07 00:47:23,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-11-07 00:47:23,700 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:23,700 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:23,701 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:23,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:23,702 INFO L82 PathProgramCache]: Analyzing trace with hash -569425411, now seen corresponding path program 1 times [2019-11-07 00:47:23,702 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:23,702 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603095571] [2019-11-07 00:47:23,703 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:24,048 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-11-07 00:47:24,049 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603095571] [2019-11-07 00:47:24,050 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:24,050 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:47:24,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169666813] [2019-11-07 00:47:24,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:47:24,052 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:24,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:47:24,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:24,055 INFO L87 Difference]: Start difference. First operand 532 states and 721 transitions. Second operand 3 states. [2019-11-07 00:47:24,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:24,099 INFO L93 Difference]: Finished difference Result 1077 states and 1504 transitions. [2019-11-07 00:47:24,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:47:24,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 228 [2019-11-07 00:47:24,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:24,105 INFO L225 Difference]: With dead ends: 1077 [2019-11-07 00:47:24,105 INFO L226 Difference]: Without dead ends: 610 [2019-11-07 00:47:24,107 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 00:47:24,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2019-11-07 00:47:24,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 609. [2019-11-07 00:47:24,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2019-11-07 00:47:24,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 853 transitions. [2019-11-07 00:47:24,136 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 853 transitions. Word has length 228 [2019-11-07 00:47:24,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:24,136 INFO L462 AbstractCegarLoop]: Abstraction has 609 states and 853 transitions. [2019-11-07 00:47:24,136 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:47:24,137 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 853 transitions. [2019-11-07 00:47:24,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-11-07 00:47:24,141 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:24,141 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:24,142 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:24,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:24,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1991839302, now seen corresponding path program 1 times [2019-11-07 00:47:24,142 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:24,142 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092328522] [2019-11-07 00:47:24,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:24,355 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-11-07 00:47:24,356 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092328522] [2019-11-07 00:47:24,356 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:24,356 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:47:24,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526032773] [2019-11-07 00:47:24,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:47:24,357 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:24,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:47:24,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:24,358 INFO L87 Difference]: Start difference. First operand 609 states and 853 transitions. Second operand 3 states. [2019-11-07 00:47:24,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:24,396 INFO L93 Difference]: Finished difference Result 1302 states and 1890 transitions. [2019-11-07 00:47:24,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:47:24,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2019-11-07 00:47:24,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:24,402 INFO L225 Difference]: With dead ends: 1302 [2019-11-07 00:47:24,402 INFO L226 Difference]: Without dead ends: 758 [2019-11-07 00:47:24,404 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 00:47:24,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2019-11-07 00:47:24,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 757. [2019-11-07 00:47:24,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 757 states. [2019-11-07 00:47:24,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1105 transitions. [2019-11-07 00:47:24,436 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1105 transitions. Word has length 229 [2019-11-07 00:47:24,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:24,436 INFO L462 AbstractCegarLoop]: Abstraction has 757 states and 1105 transitions. [2019-11-07 00:47:24,436 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:47:24,436 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1105 transitions. [2019-11-07 00:47:24,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-11-07 00:47:24,442 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:24,442 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:24,442 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:24,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:24,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1885576835, now seen corresponding path program 1 times [2019-11-07 00:47:24,443 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:24,443 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405956853] [2019-11-07 00:47:24,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:24,600 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-11-07 00:47:24,600 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405956853] [2019-11-07 00:47:24,601 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:24,601 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:47:24,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469507880] [2019-11-07 00:47:24,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:47:24,602 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:24,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:47:24,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:24,603 INFO L87 Difference]: Start difference. First operand 757 states and 1105 transitions. Second operand 3 states. [2019-11-07 00:47:24,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:24,653 INFO L93 Difference]: Finished difference Result 1734 states and 2626 transitions. [2019-11-07 00:47:24,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:47:24,654 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 230 [2019-11-07 00:47:24,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:24,661 INFO L225 Difference]: With dead ends: 1734 [2019-11-07 00:47:24,661 INFO L226 Difference]: Without dead ends: 1042 [2019-11-07 00:47:24,664 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 00:47:24,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2019-11-07 00:47:24,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 1041. [2019-11-07 00:47:24,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1041 states. [2019-11-07 00:47:24,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1585 transitions. [2019-11-07 00:47:24,707 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1585 transitions. Word has length 230 [2019-11-07 00:47:24,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:24,708 INFO L462 AbstractCegarLoop]: Abstraction has 1041 states and 1585 transitions. [2019-11-07 00:47:24,708 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:47:24,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1585 transitions. [2019-11-07 00:47:24,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-11-07 00:47:24,715 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:24,716 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:24,716 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:24,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:24,717 INFO L82 PathProgramCache]: Analyzing trace with hash 752063174, now seen corresponding path program 1 times [2019-11-07 00:47:24,717 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:24,717 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487516762] [2019-11-07 00:47:24,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:25,065 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-11-07 00:47:25,066 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487516762] [2019-11-07 00:47:25,067 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:25,067 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:47:25,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587990283] [2019-11-07 00:47:25,068 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:47:25,068 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:25,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:47:25,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:47:25,069 INFO L87 Difference]: Start difference. First operand 1041 states and 1585 transitions. Second operand 3 states. [2019-11-07 00:47:25,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:25,154 INFO L93 Difference]: Finished difference Result 2562 states and 4026 transitions. [2019-11-07 00:47:25,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:47:25,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 231 [2019-11-07 00:47:25,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:25,168 INFO L225 Difference]: With dead ends: 2562 [2019-11-07 00:47:25,168 INFO L226 Difference]: Without dead ends: 1586 [2019-11-07 00:47:25,172 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 00:47:25,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2019-11-07 00:47:25,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1585. [2019-11-07 00:47:25,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1585 states. [2019-11-07 00:47:25,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2497 transitions. [2019-11-07 00:47:25,247 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2497 transitions. Word has length 231 [2019-11-07 00:47:25,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:25,248 INFO L462 AbstractCegarLoop]: Abstraction has 1585 states and 2497 transitions. [2019-11-07 00:47:25,248 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:47:25,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2497 transitions. [2019-11-07 00:47:25,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-11-07 00:47:25,259 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:25,259 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:25,260 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:25,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:25,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1473001190, now seen corresponding path program 1 times [2019-11-07 00:47:25,260 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:25,261 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485193354] [2019-11-07 00:47:25,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-11-07 00:47:25,670 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485193354] [2019-11-07 00:47:25,671 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:25,671 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-11-07 00:47:25,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065029899] [2019-11-07 00:47:25,674 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-07 00:47:25,674 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:25,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-07 00:47:25,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:47:25,676 INFO L87 Difference]: Start difference. First operand 1585 states and 2497 transitions. Second operand 19 states. [2019-11-07 00:47:30,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:30,282 INFO L93 Difference]: Finished difference Result 3938 states and 6152 transitions. [2019-11-07 00:47:30,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-11-07 00:47:30,283 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 233 [2019-11-07 00:47:30,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:30,313 INFO L225 Difference]: With dead ends: 3938 [2019-11-07 00:47:30,313 INFO L226 Difference]: Without dead ends: 3693 [2019-11-07 00:47:30,317 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2019-11-07 00:47:30,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3693 states. [2019-11-07 00:47:30,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3693 to 3656. [2019-11-07 00:47:30,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3656 states. [2019-11-07 00:47:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 5775 transitions. [2019-11-07 00:47:30,527 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 5775 transitions. Word has length 233 [2019-11-07 00:47:30,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:30,528 INFO L462 AbstractCegarLoop]: Abstraction has 3656 states and 5775 transitions. [2019-11-07 00:47:30,528 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-07 00:47:30,528 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 5775 transitions. [2019-11-07 00:47:30,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-11-07 00:47:30,565 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:30,566 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:30,566 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:30,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:30,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1846424479, now seen corresponding path program 1 times [2019-11-07 00:47:30,567 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:30,568 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973919388] [2019-11-07 00:47:30,568 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-11-07 00:47:31,098 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973919388] [2019-11-07 00:47:31,099 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:31,099 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-11-07 00:47:31,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361434808] [2019-11-07 00:47:31,101 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:47:31,101 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:31,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:47:31,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-11-07 00:47:31,102 INFO L87 Difference]: Start difference. First operand 3656 states and 5775 transitions. Second operand 15 states. [2019-11-07 00:47:34,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:34,624 INFO L93 Difference]: Finished difference Result 4789 states and 7304 transitions. [2019-11-07 00:47:34,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-11-07 00:47:34,625 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 234 [2019-11-07 00:47:34,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:34,662 INFO L225 Difference]: With dead ends: 4789 [2019-11-07 00:47:34,663 INFO L226 Difference]: Without dead ends: 3758 [2019-11-07 00:47:34,669 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2019-11-07 00:47:34,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3758 states. [2019-11-07 00:47:34,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3758 to 3726. [2019-11-07 00:47:34,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3726 states. [2019-11-07 00:47:34,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3726 states to 3726 states and 5887 transitions. [2019-11-07 00:47:34,860 INFO L78 Accepts]: Start accepts. Automaton has 3726 states and 5887 transitions. Word has length 234 [2019-11-07 00:47:34,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:34,861 INFO L462 AbstractCegarLoop]: Abstraction has 3726 states and 5887 transitions. [2019-11-07 00:47:34,861 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:47:34,861 INFO L276 IsEmpty]: Start isEmpty. Operand 3726 states and 5887 transitions. [2019-11-07 00:47:34,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-11-07 00:47:34,880 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:34,880 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:34,881 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:34,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:34,881 INFO L82 PathProgramCache]: Analyzing trace with hash -654037494, now seen corresponding path program 1 times [2019-11-07 00:47:34,881 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:34,881 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135010487] [2019-11-07 00:47:34,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:35,068 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-11-07 00:47:35,069 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135010487] [2019-11-07 00:47:35,070 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:35,070 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:47:35,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301489927] [2019-11-07 00:47:35,071 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:47:35,072 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:35,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:47:35,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:47:35,073 INFO L87 Difference]: Start difference. First operand 3726 states and 5887 transitions. Second operand 5 states. [2019-11-07 00:47:35,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:35,201 INFO L93 Difference]: Finished difference Result 4547 states and 6961 transitions. [2019-11-07 00:47:35,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 00:47:35,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 237 [2019-11-07 00:47:35,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:35,223 INFO L225 Difference]: With dead ends: 4547 [2019-11-07 00:47:35,224 INFO L226 Difference]: Without dead ends: 3431 [2019-11-07 00:47:35,235 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:47:35,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3431 states. [2019-11-07 00:47:35,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3431 to 3431. [2019-11-07 00:47:35,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3431 states. [2019-11-07 00:47:35,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3431 states to 3431 states and 5482 transitions. [2019-11-07 00:47:35,374 INFO L78 Accepts]: Start accepts. Automaton has 3431 states and 5482 transitions. Word has length 237 [2019-11-07 00:47:35,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:35,374 INFO L462 AbstractCegarLoop]: Abstraction has 3431 states and 5482 transitions. [2019-11-07 00:47:35,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:47:35,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3431 states and 5482 transitions. [2019-11-07 00:47:35,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-11-07 00:47:35,393 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:35,394 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:35,394 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:35,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:35,395 INFO L82 PathProgramCache]: Analyzing trace with hash 883045897, now seen corresponding path program 1 times [2019-11-07 00:47:35,395 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:35,395 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474505780] [2019-11-07 00:47:35,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:35,807 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-11-07 00:47:35,808 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474505780] [2019-11-07 00:47:35,808 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:35,808 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-11-07 00:47:35,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509594401] [2019-11-07 00:47:35,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:47:35,809 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:35,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:47:35,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:47:35,810 INFO L87 Difference]: Start difference. First operand 3431 states and 5482 transitions. Second operand 16 states. [2019-11-07 00:47:36,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:36,197 INFO L93 Difference]: Finished difference Result 4324 states and 6671 transitions. [2019-11-07 00:47:36,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-07 00:47:36,198 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 234 [2019-11-07 00:47:36,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:36,221 INFO L225 Difference]: With dead ends: 4324 [2019-11-07 00:47:36,221 INFO L226 Difference]: Without dead ends: 3483 [2019-11-07 00:47:36,226 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 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 00:47:36,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3483 states. [2019-11-07 00:47:36,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3483 to 3465. [2019-11-07 00:47:36,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3465 states. [2019-11-07 00:47:36,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3465 states to 3465 states and 5525 transitions. [2019-11-07 00:47:36,375 INFO L78 Accepts]: Start accepts. Automaton has 3465 states and 5525 transitions. Word has length 234 [2019-11-07 00:47:36,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:36,376 INFO L462 AbstractCegarLoop]: Abstraction has 3465 states and 5525 transitions. [2019-11-07 00:47:36,376 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:47:36,376 INFO L276 IsEmpty]: Start isEmpty. Operand 3465 states and 5525 transitions. [2019-11-07 00:47:36,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-11-07 00:47:36,394 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:36,394 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:36,394 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:36,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:36,395 INFO L82 PathProgramCache]: Analyzing trace with hash -306166866, now seen corresponding path program 1 times [2019-11-07 00:47:36,395 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:36,395 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300023579] [2019-11-07 00:47:36,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-11-07 00:47:36,573 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300023579] [2019-11-07 00:47:36,574 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:47:36,574 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:47:36,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274947666] [2019-11-07 00:47:36,575 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:47:36,575 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:36,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:47:36,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:47:36,575 INFO L87 Difference]: Start difference. First operand 3465 states and 5525 transitions. Second operand 5 states. [2019-11-07 00:47:37,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:37,761 INFO L93 Difference]: Finished difference Result 6702 states and 10482 transitions. [2019-11-07 00:47:37,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:47:37,762 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 234 [2019-11-07 00:47:37,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:37,805 INFO L225 Difference]: With dead ends: 6702 [2019-11-07 00:47:37,805 INFO L226 Difference]: Without dead ends: 6147 [2019-11-07 00:47:37,812 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 00:47:37,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6147 states. [2019-11-07 00:47:38,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6147 to 6116. [2019-11-07 00:47:38,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6116 states. [2019-11-07 00:47:38,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6116 states to 6116 states and 9690 transitions. [2019-11-07 00:47:38,108 INFO L78 Accepts]: Start accepts. Automaton has 6116 states and 9690 transitions. Word has length 234 [2019-11-07 00:47:38,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:38,109 INFO L462 AbstractCegarLoop]: Abstraction has 6116 states and 9690 transitions. [2019-11-07 00:47:38,109 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:47:38,109 INFO L276 IsEmpty]: Start isEmpty. Operand 6116 states and 9690 transitions. [2019-11-07 00:47:38,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-11-07 00:47:38,134 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:38,135 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:38,135 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:38,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:38,135 INFO L82 PathProgramCache]: Analyzing trace with hash 632364749, now seen corresponding path program 1 times [2019-11-07 00:47:38,135 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:38,136 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482086017] [2019-11-07 00:47:38,136 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-11-07 00:47:38,346 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482086017] [2019-11-07 00:47:38,346 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445434774] [2019-11-07 00:47:38,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:47:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:38,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:47:38,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:47:39,179 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 00:47:39,180 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:47:39,551 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:47:39,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:47:39,703 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:47:40,287 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-11-07 00:47:40,288 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:47:40,288 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-11-07 00:47:40,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929055154] [2019-11-07 00:47:40,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:47:40,290 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:40,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:47:40,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:47:40,290 INFO L87 Difference]: Start difference. First operand 6116 states and 9690 transitions. Second operand 9 states. [2019-11-07 00:47:41,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:41,878 INFO L93 Difference]: Finished difference Result 12210 states and 19360 transitions. [2019-11-07 00:47:41,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:47:41,879 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 234 [2019-11-07 00:47:41,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:41,912 INFO L225 Difference]: With dead ends: 12210 [2019-11-07 00:47:41,912 INFO L226 Difference]: Without dead ends: 6130 [2019-11-07 00:47:41,935 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 461 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:47:41,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6130 states. [2019-11-07 00:47:42,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6130 to 6130. [2019-11-07 00:47:42,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6130 states. [2019-11-07 00:47:42,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6130 states to 6130 states and 9708 transitions. [2019-11-07 00:47:42,347 INFO L78 Accepts]: Start accepts. Automaton has 6130 states and 9708 transitions. Word has length 234 [2019-11-07 00:47:42,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:42,348 INFO L462 AbstractCegarLoop]: Abstraction has 6130 states and 9708 transitions. [2019-11-07 00:47:42,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:47:42,348 INFO L276 IsEmpty]: Start isEmpty. Operand 6130 states and 9708 transitions. [2019-11-07 00:47:42,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-11-07 00:47:42,385 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:42,386 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:42,597 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:47:42,598 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:42,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:42,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1340159205, now seen corresponding path program 1 times [2019-11-07 00:47:42,598 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:42,599 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589537196] [2019-11-07 00:47:42,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:42,977 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-11-07 00:47:42,977 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589537196] [2019-11-07 00:47:42,978 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309058356] [2019-11-07 00:47:42,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:47:43,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:43,839 INFO L256 TraceCheckSpWp]: Trace formula consists of 2967 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:47:43,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:47:43,958 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 00:47:43,958 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:47:44,309 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:47:44,380 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:47:44,458 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-11-07 00:47:44,458 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:47:44,458 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-11-07 00:47:44,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453045912] [2019-11-07 00:47:44,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:47:44,460 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:44,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:47:44,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:47:44,460 INFO L87 Difference]: Start difference. First operand 6130 states and 9708 transitions. Second operand 7 states. [2019-11-07 00:47:45,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:47:45,525 INFO L93 Difference]: Finished difference Result 12215 states and 19416 transitions. [2019-11-07 00:47:45,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:47:45,525 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 235 [2019-11-07 00:47:45,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:47:45,549 INFO L225 Difference]: With dead ends: 12215 [2019-11-07 00:47:45,549 INFO L226 Difference]: Without dead ends: 6136 [2019-11-07 00:47:45,575 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 468 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:47:45,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6136 states. [2019-11-07 00:47:45,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6136 to 6136. [2019-11-07 00:47:45,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6136 states. [2019-11-07 00:47:45,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6136 states to 6136 states and 9715 transitions. [2019-11-07 00:47:45,870 INFO L78 Accepts]: Start accepts. Automaton has 6136 states and 9715 transitions. Word has length 235 [2019-11-07 00:47:45,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:47:45,870 INFO L462 AbstractCegarLoop]: Abstraction has 6136 states and 9715 transitions. [2019-11-07 00:47:45,870 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:47:45,870 INFO L276 IsEmpty]: Start isEmpty. Operand 6136 states and 9715 transitions. [2019-11-07 00:47:45,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-11-07 00:47:45,895 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:47:45,895 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:47:46,110 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:47:46,110 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:47:46,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:47:46,110 INFO L82 PathProgramCache]: Analyzing trace with hash 344725991, now seen corresponding path program 1 times [2019-11-07 00:47:46,111 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:47:46,111 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674240719] [2019-11-07 00:47:46,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:47:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:46,430 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-11-07 00:47:46,430 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674240719] [2019-11-07 00:47:46,431 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345600493] [2019-11-07 00:47:46,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:47:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:47:47,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 2968 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:47:47,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:47:47,460 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:47:47,461 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:47:47,775 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:47:47,864 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:47:47,931 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:47:48,038 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-11-07 00:47:48,038 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:47:48,038 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-11-07 00:47:48,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458186754] [2019-11-07 00:47:48,040 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:47:48,040 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:47:48,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:47:48,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-11-07 00:47:48,041 INFO L87 Difference]: Start difference. First operand 6136 states and 9715 transitions. Second operand 16 states.