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_spec9_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:19:12,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:19:12,503 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:19:12,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:19:12,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:19:12,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:19:12,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:19:12,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:19:12,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:19:12,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:19:12,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:19:12,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:19:12,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:19:12,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:19:12,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:19:12,537 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:19:12,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:19:12,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:19:12,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:19:12,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:19:12,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:19:12,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:19:12,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:19:12,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:19:12,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:19:12,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:19:12,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:19:12,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:19:12,552 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:19:12,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:19:12,554 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:19:12,555 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:19:12,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:19:12,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:19:12,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:19:12,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:19:12,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:19:12,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:19:12,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:19:12,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:19:12,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:19:12,564 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:19:12,592 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:19:12,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:19:12,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:19:12,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:19:12,594 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:19:12,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:19:12,595 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:19:12,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:19:12,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:19:12,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:19:12,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:19:12,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:19:12,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:19:12,596 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:19:12,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:19:12,596 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:19:12,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:19:12,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:19:12,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:19:12,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:19:12,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:19:12,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:19:12,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:19:12,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:19:12,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:19:12,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:19:12,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:19:12,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:19:12,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:19:12,904 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:19:12,928 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:19:12,931 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:19:12,933 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:19:12,933 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:19:12,934 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product33.cil.c [2019-10-13 21:19:13,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ddcb6458/f2ab45721e354643a78705065261d4dd/FLAG9d2608409 [2019-10-13 21:19:13,685 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:19:13,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product33.cil.c [2019-10-13 21:19:13,722 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ddcb6458/f2ab45721e354643a78705065261d4dd/FLAG9d2608409 [2019-10-13 21:19:13,929 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ddcb6458/f2ab45721e354643a78705065261d4dd [2019-10-13 21:19:13,940 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:19:13,941 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:19:13,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:19:13,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:19:13,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:19:13,948 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:13" (1/1) ... [2019-10-13 21:19:13,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78b29eb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:13, skipping insertion in model container [2019-10-13 21:19:13,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:19:13" (1/1) ... [2019-10-13 21:19:13,961 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:19:14,053 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:19:14,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:19:14,904 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:19:15,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:19:15,136 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:19:15,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:15 WrapperNode [2019-10-13 21:19:15,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:19:15,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:19:15,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:19:15,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:19:15,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:15" (1/1) ... [2019-10-13 21:19:15,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:15" (1/1) ... [2019-10-13 21:19:15,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:15" (1/1) ... [2019-10-13 21:19:15,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:15" (1/1) ... [2019-10-13 21:19:15,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:15" (1/1) ... [2019-10-13 21:19:15,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:15" (1/1) ... [2019-10-13 21:19:15,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:15" (1/1) ... [2019-10-13 21:19:15,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:19:15,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:19:15,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:19:15,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:19:15,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:19:15,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:19:15,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:19:15,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:19:15,416 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:19:15,417 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-13 21:19:15,417 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:19:15,417 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:19:15,417 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:19:15,417 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:19:15,418 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:19:15,418 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:19:15,418 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:19:15,418 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:19:15,418 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:19:15,419 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:19:15,419 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:19:15,419 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:19:15,419 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:19:15,419 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:19:15,422 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:19:15,422 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:19:15,422 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:19:15,422 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:19:15,423 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:19:15,423 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:19:15,423 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:19:15,423 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:19:15,424 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:19:15,424 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:19:15,424 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:19:15,424 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:19:15,424 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:19:15,424 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:19:15,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:19:15,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:19:15,425 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:19:15,425 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:19:15,425 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:19:15,425 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:19:15,425 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:19:15,426 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:19:15,426 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:19:15,426 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:19:15,426 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:19:15,426 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:19:15,426 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:19:15,426 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:19:15,427 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:19:15,427 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:19:15,427 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:19:15,427 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:19:15,427 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:19:15,427 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:19:15,427 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:19:15,428 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:19:15,428 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:19:15,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:19:15,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:19:15,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:19:15,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:19:15,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:19:15,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:19:15,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:19:15,430 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:19:15,430 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:19:15,430 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:19:15,430 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:19:15,431 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:19:15,431 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:19:15,431 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:19:15,431 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:19:15,431 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:19:15,432 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:19:15,432 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:19:15,433 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:19:15,433 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:19:15,433 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:19:15,433 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:19:15,433 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:19:15,434 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:19:15,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:19:15,435 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:19:15,435 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:19:15,435 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:19:15,436 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:19:15,436 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:19:15,436 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:19:15,437 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:19:15,437 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:19:15,437 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:19:15,438 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:19:15,438 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:19:15,438 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:19:15,438 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:19:15,438 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:19:15,438 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:19:15,438 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:19:15,439 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:19:15,439 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:19:15,439 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:19:15,439 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:19:15,439 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:19:15,439 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:19:15,439 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:19:15,440 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:19:15,440 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:19:15,440 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:19:15,440 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:19:15,440 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:19:15,440 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:19:15,440 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:19:15,441 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:19:15,441 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:19:15,441 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:19:15,441 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:19:15,442 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:19:15,442 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:19:15,442 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:19:15,442 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:19:15,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:19:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:19:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:19:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:19:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:19:15,447 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:19:15,448 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:19:15,448 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:19:15,448 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:19:15,448 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:19:15,448 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:19:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:19:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:19:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:19:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:19:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:19:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:19:15,451 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:19:15,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:19:15,454 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-13 21:19:15,455 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:19:15,455 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:19:15,455 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:19:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:19:15,456 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:19:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:19:15,461 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:19:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:19:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:19:15,462 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:19:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:19:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:19:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:19:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:19:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:19:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:19:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:19:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:19:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:19:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:19:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:19:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:19:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:19:15,465 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:19:15,466 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:19:15,466 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:19:15,466 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:19:15,466 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:19:15,466 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:19:15,466 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:19:15,466 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:19:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:19:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:19:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:19:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:19:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:19:15,467 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:19:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:19:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:19:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:19:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:19:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:19:15,468 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:19:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:19:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 21:19:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 21:19:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:19:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:19:15,469 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:19:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:19:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:19:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:19:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:19:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:19:15,470 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:19:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:19:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:19:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:19:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:19:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:19:15,471 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:19:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:19:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:19:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:19:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:19:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:19:15,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:19:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:19:15,473 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:19:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:19:15,474 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:19:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:19:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:19:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:19:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:19:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:19:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:19:15,475 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:19:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:19:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:19:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:19:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:19:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:19:15,476 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:19:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:19:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:19:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:19:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:19:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:19:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:19:15,477 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:19:15,478 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:19:15,478 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:19:15,478 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:19:15,478 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:19:15,478 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:19:15,478 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:19:15,479 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:19:15,479 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:19:15,479 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:19:15,479 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:19:15,479 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:19:15,479 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:19:15,479 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:19:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:19:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:19:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:19:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:19:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:19:15,480 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:19:15,481 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:19:15,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:19:15,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:19:15,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:19:17,752 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:19:17,753 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:19:17,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:17 BoogieIcfgContainer [2019-10-13 21:19:17,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:19:17,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:19:17,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:19:17,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:19:17,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:19:13" (1/3) ... [2019-10-13 21:19:17,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72097a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:17, skipping insertion in model container [2019-10-13 21:19:17,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:19:15" (2/3) ... [2019-10-13 21:19:17,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72097a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:19:17, skipping insertion in model container [2019-10-13 21:19:17,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:19:17" (3/3) ... [2019-10-13 21:19:17,770 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product33.cil.c [2019-10-13 21:19:17,782 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:19:17,793 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:19:17,806 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:19:17,848 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:19:17,848 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:19:17,849 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:19:17,851 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:19:17,851 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:19:17,852 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:19:17,852 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:19:17,852 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:19:17,901 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states. [2019-10-13 21:19:17,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 21:19:17,938 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:17,939 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:17,943 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:17,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:17,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1835133867, now seen corresponding path program 1 times [2019-10-13 21:19:17,959 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:17,960 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835366062] [2019-10-13 21:19:17,960 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:17,961 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:17,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:18,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:18,797 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:18,798 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835366062] [2019-10-13 21:19:18,799 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:18,799 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:19:18,799 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193157964] [2019-10-13 21:19:18,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:19:18,806 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:18,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:19:18,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:19:18,825 INFO L87 Difference]: Start difference. First operand 594 states. Second operand 2 states. [2019-10-13 21:19:18,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:18,905 INFO L93 Difference]: Finished difference Result 919 states and 1204 transitions. [2019-10-13 21:19:18,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:19:18,907 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 158 [2019-10-13 21:19:18,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:18,931 INFO L225 Difference]: With dead ends: 919 [2019-10-13 21:19:18,932 INFO L226 Difference]: Without dead ends: 571 [2019-10-13 21:19:18,944 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:19:18,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2019-10-13 21:19:19,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2019-10-13 21:19:19,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2019-10-13 21:19:19,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 753 transitions. [2019-10-13 21:19:19,091 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 753 transitions. Word has length 158 [2019-10-13 21:19:19,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:19,093 INFO L462 AbstractCegarLoop]: Abstraction has 571 states and 753 transitions. [2019-10-13 21:19:19,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:19:19,093 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 753 transitions. [2019-10-13 21:19:19,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 21:19:19,098 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:19,098 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:19,099 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:19,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:19,099 INFO L82 PathProgramCache]: Analyzing trace with hash 582297796, now seen corresponding path program 1 times [2019-10-13 21:19:19,100 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:19,100 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131430207] [2019-10-13 21:19:19,100 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:19,100 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:19,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:19,412 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:19,412 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131430207] [2019-10-13 21:19:19,413 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:19,413 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:19,413 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985348664] [2019-10-13 21:19:19,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:19,416 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:19,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:19,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:19,416 INFO L87 Difference]: Start difference. First operand 571 states and 753 transitions. Second operand 3 states. [2019-10-13 21:19:19,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:19,530 INFO L93 Difference]: Finished difference Result 902 states and 1172 transitions. [2019-10-13 21:19:19,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:19,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-10-13 21:19:19,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:19,543 INFO L225 Difference]: With dead ends: 902 [2019-10-13 21:19:19,544 INFO L226 Difference]: Without dead ends: 574 [2019-10-13 21:19:19,548 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:19,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2019-10-13 21:19:19,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 573. [2019-10-13 21:19:19,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2019-10-13 21:19:19,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 755 transitions. [2019-10-13 21:19:19,589 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 755 transitions. Word has length 159 [2019-10-13 21:19:19,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:19,590 INFO L462 AbstractCegarLoop]: Abstraction has 573 states and 755 transitions. [2019-10-13 21:19:19,590 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:19,590 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 755 transitions. [2019-10-13 21:19:19,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 21:19:19,594 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:19,595 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:19,595 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:19,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:19,596 INFO L82 PathProgramCache]: Analyzing trace with hash -2046510219, now seen corresponding path program 1 times [2019-10-13 21:19:19,596 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:19,598 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128900285] [2019-10-13 21:19:19,598 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:19,599 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:19,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:19,872 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:19,873 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128900285] [2019-10-13 21:19:19,873 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:19,873 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:19,874 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432121160] [2019-10-13 21:19:19,877 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:19,881 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:19,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:19,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:19,882 INFO L87 Difference]: Start difference. First operand 573 states and 755 transitions. Second operand 3 states. [2019-10-13 21:19:19,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:19,965 INFO L93 Difference]: Finished difference Result 1124 states and 1511 transitions. [2019-10-13 21:19:19,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:19,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-13 21:19:19,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:19,976 INFO L225 Difference]: With dead ends: 1124 [2019-10-13 21:19:19,976 INFO L226 Difference]: Without dead ends: 616 [2019-10-13 21:19:19,980 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:19,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-10-13 21:19:20,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 615. [2019-10-13 21:19:20,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-10-13 21:19:20,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 827 transitions. [2019-10-13 21:19:20,035 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 827 transitions. Word has length 171 [2019-10-13 21:19:20,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:20,038 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 827 transitions. [2019-10-13 21:19:20,038 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:20,038 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 827 transitions. [2019-10-13 21:19:20,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-13 21:19:20,048 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:20,048 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:19:20,049 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:20,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:20,050 INFO L82 PathProgramCache]: Analyzing trace with hash -866341980, now seen corresponding path program 1 times [2019-10-13 21:19:20,051 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:20,051 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023714314] [2019-10-13 21:19:20,051 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:20,051 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:20,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:20,250 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:20,250 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023714314] [2019-10-13 21:19:20,251 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:20,251 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:20,251 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706076527] [2019-10-13 21:19:20,253 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:20,253 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:20,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:20,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:20,254 INFO L87 Difference]: Start difference. First operand 615 states and 827 transitions. Second operand 3 states. [2019-10-13 21:19:20,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:20,306 INFO L93 Difference]: Finished difference Result 1247 states and 1722 transitions. [2019-10-13 21:19:20,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:20,307 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2019-10-13 21:19:20,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:20,314 INFO L225 Difference]: With dead ends: 1247 [2019-10-13 21:19:20,315 INFO L226 Difference]: Without dead ends: 697 [2019-10-13 21:19:20,317 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:20,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2019-10-13 21:19:20,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 696. [2019-10-13 21:19:20,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2019-10-13 21:19:20,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 965 transitions. [2019-10-13 21:19:20,409 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 965 transitions. Word has length 172 [2019-10-13 21:19:20,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:20,409 INFO L462 AbstractCegarLoop]: Abstraction has 696 states and 965 transitions. [2019-10-13 21:19:20,409 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:20,410 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 965 transitions. [2019-10-13 21:19:20,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-13 21:19:20,414 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:20,414 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:20,414 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:20,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:20,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1566529269, now seen corresponding path program 1 times [2019-10-13 21:19:20,415 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:20,415 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893223415] [2019-10-13 21:19:20,416 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:20,416 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:20,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:20,617 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:19:20,618 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893223415] [2019-10-13 21:19:20,618 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:20,619 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:20,619 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966086914] [2019-10-13 21:19:20,620 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:20,620 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:20,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:20,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:20,622 INFO L87 Difference]: Start difference. First operand 696 states and 965 transitions. Second operand 3 states. [2019-10-13 21:19:20,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:20,681 INFO L93 Difference]: Finished difference Result 1484 states and 2126 transitions. [2019-10-13 21:19:20,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:20,682 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2019-10-13 21:19:20,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:20,693 INFO L225 Difference]: With dead ends: 1484 [2019-10-13 21:19:20,694 INFO L226 Difference]: Without dead ends: 853 [2019-10-13 21:19:20,698 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:20,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2019-10-13 21:19:20,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 852. [2019-10-13 21:19:20,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2019-10-13 21:19:20,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1229 transitions. [2019-10-13 21:19:20,768 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1229 transitions. Word has length 173 [2019-10-13 21:19:20,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:20,769 INFO L462 AbstractCegarLoop]: Abstraction has 852 states and 1229 transitions. [2019-10-13 21:19:20,769 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:20,769 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1229 transitions. [2019-10-13 21:19:20,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-13 21:19:20,775 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:20,775 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:20,776 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:20,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:20,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1766682355, now seen corresponding path program 1 times [2019-10-13 21:19:20,777 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:20,777 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485137723] [2019-10-13 21:19:20,777 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:20,778 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:20,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:21,101 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:19:21,102 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485137723] [2019-10-13 21:19:21,104 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:19:21,104 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:19:21,104 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580692998] [2019-10-13 21:19:21,106 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:19:21,106 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:21,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:19:21,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:21,107 INFO L87 Difference]: Start difference. First operand 852 states and 1229 transitions. Second operand 3 states. [2019-10-13 21:19:21,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:21,216 INFO L93 Difference]: Finished difference Result 1271 states and 1777 transitions. [2019-10-13 21:19:21,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:19:21,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-10-13 21:19:21,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:21,224 INFO L225 Difference]: With dead ends: 1271 [2019-10-13 21:19:21,225 INFO L226 Difference]: Without dead ends: 945 [2019-10-13 21:19:21,227 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:19:21,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2019-10-13 21:19:21,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 945. [2019-10-13 21:19:21,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 945 states. [2019-10-13 21:19:21,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1352 transitions. [2019-10-13 21:19:21,276 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1352 transitions. Word has length 175 [2019-10-13 21:19:21,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:21,277 INFO L462 AbstractCegarLoop]: Abstraction has 945 states and 1352 transitions. [2019-10-13 21:19:21,277 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:19:21,277 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1352 transitions. [2019-10-13 21:19:21,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2019-10-13 21:19:21,286 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:21,287 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:21,287 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:21,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:21,288 INFO L82 PathProgramCache]: Analyzing trace with hash 2119106243, now seen corresponding path program 1 times [2019-10-13 21:19:21,288 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:21,288 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160831832] [2019-10-13 21:19:21,288 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:21,289 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:21,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:21,910 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-13 21:19:21,911 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160831832] [2019-10-13 21:19:21,911 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603192141] [2019-10-13 21:19:21,911 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 [2019-10-13 21:19:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:22,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 3614 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:22,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:23,427 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-13 21:19:23,428 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:24,339 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:24,438 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:24,534 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:24,708 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-13 21:19:24,709 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:24,709 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-13 21:19:24,710 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349533218] [2019-10-13 21:19:24,710 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:19:24,711 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:24,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:19:24,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:24,712 INFO L87 Difference]: Start difference. First operand 945 states and 1352 transitions. Second operand 9 states. [2019-10-13 21:19:27,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:27,175 INFO L93 Difference]: Finished difference Result 1868 states and 2684 transitions. [2019-10-13 21:19:27,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:19:27,176 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 329 [2019-10-13 21:19:27,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:27,182 INFO L225 Difference]: With dead ends: 1868 [2019-10-13 21:19:27,182 INFO L226 Difference]: Without dead ends: 959 [2019-10-13 21:19:27,188 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 647 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:19:27,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2019-10-13 21:19:27,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2019-10-13 21:19:27,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2019-10-13 21:19:27,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1370 transitions. [2019-10-13 21:19:27,246 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1370 transitions. Word has length 329 [2019-10-13 21:19:27,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:27,247 INFO L462 AbstractCegarLoop]: Abstraction has 959 states and 1370 transitions. [2019-10-13 21:19:27,247 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:19:27,247 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1370 transitions. [2019-10-13 21:19:27,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2019-10-13 21:19:27,255 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:27,255 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:27,465 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:27,466 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:27,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:27,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1026090373, now seen corresponding path program 1 times [2019-10-13 21:19:27,467 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:27,467 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047966793] [2019-10-13 21:19:27,467 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:27,468 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:27,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:27,972 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-13 21:19:27,972 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047966793] [2019-10-13 21:19:27,973 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013228619] [2019-10-13 21:19:27,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:29,098 INFO L256 TraceCheckSpWp]: Trace formula consists of 3615 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:29,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:29,360 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-13 21:19:29,361 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:30,066 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:30,141 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:30,269 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-13 21:19:30,270 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:19:30,270 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-13 21:19:30,270 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459064842] [2019-10-13 21:19:30,271 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:19:30,271 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:30,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:19:30,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:19:30,272 INFO L87 Difference]: Start difference. First operand 959 states and 1370 transitions. Second operand 7 states. [2019-10-13 21:19:31,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:31,351 INFO L93 Difference]: Finished difference Result 1869 states and 2690 transitions. [2019-10-13 21:19:31,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:19:31,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 330 [2019-10-13 21:19:31,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:31,363 INFO L225 Difference]: With dead ends: 1869 [2019-10-13 21:19:31,363 INFO L226 Difference]: Without dead ends: 961 [2019-10-13 21:19:31,368 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 654 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:19:31,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2019-10-13 21:19:31,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 961. [2019-10-13 21:19:31,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2019-10-13 21:19:31,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1373 transitions. [2019-10-13 21:19:31,417 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1373 transitions. Word has length 330 [2019-10-13 21:19:31,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:31,419 INFO L462 AbstractCegarLoop]: Abstraction has 961 states and 1373 transitions. [2019-10-13 21:19:31,419 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:19:31,419 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1373 transitions. [2019-10-13 21:19:31,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2019-10-13 21:19:31,430 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:31,430 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:31,640 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:31,640 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:31,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:31,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1454852471, now seen corresponding path program 1 times [2019-10-13 21:19:31,641 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:31,641 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657890022] [2019-10-13 21:19:31,642 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:31,642 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:31,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:32,421 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-13 21:19:32,422 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657890022] [2019-10-13 21:19:32,422 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846060979] [2019-10-13 21:19:32,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:33,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 3616 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:33,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:33,843 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:19:33,844 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:34,521 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:34,611 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:34,696 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:34,881 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-13 21:19:34,881 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:34,881 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-13 21:19:34,882 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101231601] [2019-10-13 21:19:34,883 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:19:34,883 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:34,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:19:34,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-13 21:19:34,884 INFO L87 Difference]: Start difference. First operand 961 states and 1373 transitions. Second operand 16 states. [2019-10-13 21:19:37,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:37,332 INFO L93 Difference]: Finished difference Result 1873 states and 2688 transitions. [2019-10-13 21:19:37,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:19:37,332 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 331 [2019-10-13 21:19:37,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:37,341 INFO L225 Difference]: With dead ends: 1873 [2019-10-13 21:19:37,342 INFO L226 Difference]: Without dead ends: 973 [2019-10-13 21:19:37,350 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 651 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:19:37,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2019-10-13 21:19:37,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 971. [2019-10-13 21:19:37,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2019-10-13 21:19:37,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1384 transitions. [2019-10-13 21:19:37,393 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1384 transitions. Word has length 331 [2019-10-13 21:19:37,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:37,393 INFO L462 AbstractCegarLoop]: Abstraction has 971 states and 1384 transitions. [2019-10-13 21:19:37,393 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:19:37,393 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1384 transitions. [2019-10-13 21:19:37,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2019-10-13 21:19:37,401 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:37,402 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:37,611 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:37,611 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:37,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:37,612 INFO L82 PathProgramCache]: Analyzing trace with hash 5895967, now seen corresponding path program 2 times [2019-10-13 21:19:37,612 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:37,612 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156877720] [2019-10-13 21:19:37,612 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:37,612 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:37,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-10-13 21:19:38,106 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156877720] [2019-10-13 21:19:38,106 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452778166] [2019-10-13 21:19:38,106 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:39,029 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:19:39,029 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:19:39,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 2519 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:39,053 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:39,322 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:19:39,322 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:39,946 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:40,015 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-13 21:19:40,138 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:40,138 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-13 21:19:40,139 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724132343] [2019-10-13 21:19:40,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:19:40,141 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:40,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:19:40,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:19:40,142 INFO L87 Difference]: Start difference. First operand 971 states and 1384 transitions. Second operand 12 states. [2019-10-13 21:19:41,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:41,850 INFO L93 Difference]: Finished difference Result 1864 states and 2676 transitions. [2019-10-13 21:19:41,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:19:41,851 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 332 [2019-10-13 21:19:41,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:41,859 INFO L225 Difference]: With dead ends: 1864 [2019-10-13 21:19:41,859 INFO L226 Difference]: Without dead ends: 973 [2019-10-13 21:19:41,863 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 658 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:41,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2019-10-13 21:19:41,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 971. [2019-10-13 21:19:41,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2019-10-13 21:19:41,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1383 transitions. [2019-10-13 21:19:41,917 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1383 transitions. Word has length 332 [2019-10-13 21:19:41,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:41,918 INFO L462 AbstractCegarLoop]: Abstraction has 971 states and 1383 transitions. [2019-10-13 21:19:41,918 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:19:41,918 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1383 transitions. [2019-10-13 21:19:41,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2019-10-13 21:19:41,927 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:41,927 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:42,138 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:42,139 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:42,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:42,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1925563471, now seen corresponding path program 3 times [2019-10-13 21:19:42,140 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:42,141 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211405541] [2019-10-13 21:19:42,141 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:42,141 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:42,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:42,815 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-13 21:19:42,816 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211405541] [2019-10-13 21:19:42,816 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783051694] [2019-10-13 21:19:42,817 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:43,638 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:19:43,638 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:19:43,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 2936 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:19:43,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:43,971 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:19:43,972 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:44,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:44,801 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:44,904 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms