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_spec27_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:14:17,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:14:17,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:14:17,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:14:17,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:14:17,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:14:17,839 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:14:17,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:14:17,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:14:17,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:14:17,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:14:17,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:14:17,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:14:17,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:14:17,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:14:17,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:14:17,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:14:17,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:14:17,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:14:17,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:14:17,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:14:17,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:14:17,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:14:17,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:14:17,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:14:17,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:14:17,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:14:17,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:14:17,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:14:17,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:14:17,864 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:14:17,865 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:14:17,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:14:17,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:14:17,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:14:17,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:14:17,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:14:17,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:14:17,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:14:17,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:14:17,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:14:17,871 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:14:17,886 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:14:17,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:14:17,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:14:17,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:14:17,887 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:14:17,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:14:17,888 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:14:17,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:14:17,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:14:17,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:14:17,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:14:17,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:14:17,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:14:17,889 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:14:17,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:14:17,890 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:14:17,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:14:17,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:14:17,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:14:17,890 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:14:17,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:14:17,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:14:17,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:14:17,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:14:17,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:14:17,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:14:17,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:14:17,892 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:14:17,892 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:14:18,166 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:14:18,179 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:14:18,182 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:14:18,183 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:14:18,183 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:14:18,184 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product33.cil.c [2019-10-15 01:14:18,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73972d386/b151b24bc6ea4807a77a857d7b71c362/FLAGb02ddce0e [2019-10-15 01:14:18,857 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:14:18,858 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product33.cil.c [2019-10-15 01:14:18,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73972d386/b151b24bc6ea4807a77a857d7b71c362/FLAGb02ddce0e [2019-10-15 01:14:19,051 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73972d386/b151b24bc6ea4807a77a857d7b71c362 [2019-10-15 01:14:19,061 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:14:19,062 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:14:19,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:19,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:14:19,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:14:19,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:19" (1/1) ... [2019-10-15 01:14:19,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a3e9240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:19, skipping insertion in model container [2019-10-15 01:14:19,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:14:19" (1/1) ... [2019-10-15 01:14:19,076 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:14:19,142 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:14:19,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:19,863 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:14:19,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:14:20,122 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:14:20,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:20 WrapperNode [2019-10-15 01:14:20,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:14:20,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:14:20,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:14:20,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:14:20,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:20" (1/1) ... [2019-10-15 01:14:20,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:20" (1/1) ... [2019-10-15 01:14:20,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:20" (1/1) ... [2019-10-15 01:14:20,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:20" (1/1) ... [2019-10-15 01:14:20,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:20" (1/1) ... [2019-10-15 01:14:20,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:20" (1/1) ... [2019-10-15 01:14:20,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:20" (1/1) ... [2019-10-15 01:14:20,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:14:20,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:14:20,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:14:20,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:14:20,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:14:20,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:14:20,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:14:20,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:20,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:14:20,408 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:14:20,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:20,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:20,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:20,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:14:20,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:14:20,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:14:20,410 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:14:20,410 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:14:20,410 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:20,410 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:14:20,411 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:20,411 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:14:20,411 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:14:20,411 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:14:20,411 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:14:20,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:14:20,412 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:14:20,412 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:14:20,413 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:14:20,413 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:14:20,413 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:14:20,415 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:14:20,415 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:14:20,415 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:14:20,415 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:14:20,415 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:14:20,416 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:14:20,416 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:14:20,416 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-15 01:14:20,416 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-15 01:14:20,417 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:14:20,417 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:14:20,417 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:14:20,417 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:14:20,417 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:14:20,417 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:14:20,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:14:20,418 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:14:20,418 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:14:20,418 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:14:20,418 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:14:20,418 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:14:20,418 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:14:20,419 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:14:20,419 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:14:20,419 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:14:20,419 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:14:20,419 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:14:20,419 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:14:20,420 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:14:20,420 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:14:20,420 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:14:20,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:14:20,420 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:14:20,420 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:14:20,420 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:14:20,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:14:20,421 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:14:20,421 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:14:20,422 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:14:20,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:14:20,422 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:14:20,422 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:14:20,422 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:14:20,422 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:14:20,423 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:14:20,423 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:14:20,423 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:14:20,424 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:14:20,424 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:14:20,424 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:14:20,424 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:14:20,424 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:14:20,425 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:14:20,425 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:14:20,426 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:14:20,426 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:14:20,426 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:14:20,426 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:14:20,427 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:14:20,427 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:14:20,427 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:14:20,428 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:14:20,428 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:14:20,429 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:14:20,429 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:14:20,429 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:14:20,429 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:14:20,429 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:14:20,429 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:14:20,430 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:14:20,430 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:14:20,430 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:14:20,430 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:14:20,430 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:14:20,430 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:14:20,430 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-15 01:14:20,431 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:14:20,431 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:14:20,431 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:14:20,431 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:14:20,431 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:14:20,431 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:14:20,431 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:14:20,432 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:14:20,432 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:14:20,432 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:14:20,432 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:14:20,432 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:14:20,432 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:14:20,433 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:14:20,433 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:14:20,433 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:14:20,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:14:20,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:14:20,434 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:14:20,434 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:14:20,434 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:14:20,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:14:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:14:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:14:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:14:20,436 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:14:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:14:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:14:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:14:20,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:14:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:14:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:14:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:14:20,438 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:14:20,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:14:20,442 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:14:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:14:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:14:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:14:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:14:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:14:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:14:20,443 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:14:20,444 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:14:20,444 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:14:20,444 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:14:20,444 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:14:20,444 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:14:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:14:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:14:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:14:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:14:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:14:20,445 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:14:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:14:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:14:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:14:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:14:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:14:20,446 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:14:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:14:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:14:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:14:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:14:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:14:20,447 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:14:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:14:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:14:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:14:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:14:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:14:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:14:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:14:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:14:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:14:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:14:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:14:20,449 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:14:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:14:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:14:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:14:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:14:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:14:20,450 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:14:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:14:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:14:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:14:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:14:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:14:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:14:20,451 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:14:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:14:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:14:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:14:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-15 01:14:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-15 01:14:20,452 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:14:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:14:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-15 01:14:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:14:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:14:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:14:20,453 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:14:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:14:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:14:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:14:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:14:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:14:20,454 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:14:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:14:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:14:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:14:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:14:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:14:20,455 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:14:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:14:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:14:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:14:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:14:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:14:20,456 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:14:20,457 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:14:20,457 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:14:20,457 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:14:20,457 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:14:20,457 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:14:20,457 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:14:20,458 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:14:20,458 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:14:20,458 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:14:20,458 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:14:20,458 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:14:20,458 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:14:20,459 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:14:20,459 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:14:20,459 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:14:20,459 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:14:20,459 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:14:20,459 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:14:20,459 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:14:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:14:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:14:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-15 01:14:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:14:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:14:20,460 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:14:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:14:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:14:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:14:22,516 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:14:22,516 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:14:22,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:14:22 BoogieIcfgContainer [2019-10-15 01:14:22,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:14:22,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:14:22,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:14:22,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:14:22,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:14:19" (1/3) ... [2019-10-15 01:14:22,524 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebf5e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:14:22, skipping insertion in model container [2019-10-15 01:14:22,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:14:20" (2/3) ... [2019-10-15 01:14:22,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebf5e67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:14:22, skipping insertion in model container [2019-10-15 01:14:22,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:14:22" (3/3) ... [2019-10-15 01:14:22,527 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product33.cil.c [2019-10-15 01:14:22,540 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:14:22,552 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:14:22,564 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:14:22,605 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:14:22,606 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:14:22,606 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:14:22,606 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:14:22,606 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:14:22,613 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:14:22,614 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:14:22,614 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:14:22,646 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states. [2019-10-15 01:14:22,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-10-15 01:14:22,672 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:22,674 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:14:22,676 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:22,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:22,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1585064684, now seen corresponding path program 1 times [2019-10-15 01:14:22,691 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:22,692 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300883185] [2019-10-15 01:14:22,692 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:22,692 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:22,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:23,347 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:23,347 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300883185] [2019-10-15 01:14:23,348 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:23,348 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:14:23,349 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303130331] [2019-10-15 01:14:23,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:14:23,357 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:23,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:14:23,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:14:23,374 INFO L87 Difference]: Start difference. First operand 592 states. Second operand 2 states. [2019-10-15 01:14:23,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:23,497 INFO L93 Difference]: Finished difference Result 915 states and 1208 transitions. [2019-10-15 01:14:23,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:14:23,507 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 213 [2019-10-15 01:14:23,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:23,548 INFO L225 Difference]: With dead ends: 915 [2019-10-15 01:14:23,548 INFO L226 Difference]: Without dead ends: 569 [2019-10-15 01:14:23,564 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:14:23,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2019-10-15 01:14:23,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2019-10-15 01:14:23,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2019-10-15 01:14:23,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 752 transitions. [2019-10-15 01:14:23,692 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 752 transitions. Word has length 213 [2019-10-15 01:14:23,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:23,694 INFO L462 AbstractCegarLoop]: Abstraction has 569 states and 752 transitions. [2019-10-15 01:14:23,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:14:23,694 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 752 transitions. [2019-10-15 01:14:23,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-15 01:14:23,703 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:23,703 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:14:23,704 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:23,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:23,704 INFO L82 PathProgramCache]: Analyzing trace with hash -871145054, now seen corresponding path program 1 times [2019-10-15 01:14:23,704 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:23,705 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901721983] [2019-10-15 01:14:23,705 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:23,705 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:23,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:23,999 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:23,999 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901721983] [2019-10-15 01:14:24,000 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:24,000 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:24,000 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61268333] [2019-10-15 01:14:24,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:24,007 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:24,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:24,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:24,008 INFO L87 Difference]: Start difference. First operand 569 states and 752 transitions. Second operand 3 states. [2019-10-15 01:14:24,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:24,104 INFO L93 Difference]: Finished difference Result 898 states and 1170 transitions. [2019-10-15 01:14:24,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:24,104 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2019-10-15 01:14:24,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:24,112 INFO L225 Difference]: With dead ends: 898 [2019-10-15 01:14:24,112 INFO L226 Difference]: Without dead ends: 572 [2019-10-15 01:14:24,114 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:24,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2019-10-15 01:14:24,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 571. [2019-10-15 01:14:24,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2019-10-15 01:14:24,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 754 transitions. [2019-10-15 01:14:24,158 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 754 transitions. Word has length 214 [2019-10-15 01:14:24,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:24,160 INFO L462 AbstractCegarLoop]: Abstraction has 571 states and 754 transitions. [2019-10-15 01:14:24,161 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:24,161 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 754 transitions. [2019-10-15 01:14:24,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-10-15 01:14:24,168 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:24,168 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:14:24,168 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:24,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:24,169 INFO L82 PathProgramCache]: Analyzing trace with hash 169428497, now seen corresponding path program 1 times [2019-10-15 01:14:24,169 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:24,169 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421181886] [2019-10-15 01:14:24,169 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:24,169 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:24,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:24,410 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:24,410 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421181886] [2019-10-15 01:14:24,410 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:24,411 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:24,411 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260737331] [2019-10-15 01:14:24,412 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:24,414 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:24,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:24,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:24,415 INFO L87 Difference]: Start difference. First operand 571 states and 754 transitions. Second operand 3 states. [2019-10-15 01:14:24,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:24,457 INFO L93 Difference]: Finished difference Result 1120 states and 1509 transitions. [2019-10-15 01:14:24,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:24,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 226 [2019-10-15 01:14:24,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:24,465 INFO L225 Difference]: With dead ends: 1120 [2019-10-15 01:14:24,465 INFO L226 Difference]: Without dead ends: 614 [2019-10-15 01:14:24,467 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:24,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2019-10-15 01:14:24,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 613. [2019-10-15 01:14:24,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2019-10-15 01:14:24,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 826 transitions. [2019-10-15 01:14:24,502 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 826 transitions. Word has length 226 [2019-10-15 01:14:24,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:24,503 INFO L462 AbstractCegarLoop]: Abstraction has 613 states and 826 transitions. [2019-10-15 01:14:24,503 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:24,504 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 826 transitions. [2019-10-15 01:14:24,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-10-15 01:14:24,510 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:24,511 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:14:24,511 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:24,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:24,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1807873467, now seen corresponding path program 1 times [2019-10-15 01:14:24,512 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:24,513 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556689103] [2019-10-15 01:14:24,513 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:24,513 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:24,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:24,684 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:24,685 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556689103] [2019-10-15 01:14:24,685 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:24,685 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:24,685 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972713740] [2019-10-15 01:14:24,686 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:24,686 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:24,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:24,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:24,687 INFO L87 Difference]: Start difference. First operand 613 states and 826 transitions. Second operand 3 states. [2019-10-15 01:14:24,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:24,729 INFO L93 Difference]: Finished difference Result 1243 states and 1720 transitions. [2019-10-15 01:14:24,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:24,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 227 [2019-10-15 01:14:24,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:24,735 INFO L225 Difference]: With dead ends: 1243 [2019-10-15 01:14:24,735 INFO L226 Difference]: Without dead ends: 695 [2019-10-15 01:14:24,737 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:24,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2019-10-15 01:14:24,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 694. [2019-10-15 01:14:24,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2019-10-15 01:14:24,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 964 transitions. [2019-10-15 01:14:24,771 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 964 transitions. Word has length 227 [2019-10-15 01:14:24,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:24,771 INFO L462 AbstractCegarLoop]: Abstraction has 694 states and 964 transitions. [2019-10-15 01:14:24,771 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:24,772 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 964 transitions. [2019-10-15 01:14:24,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-10-15 01:14:24,776 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:24,777 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:14:24,777 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:24,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:24,777 INFO L82 PathProgramCache]: Analyzing trace with hash -351968527, now seen corresponding path program 1 times [2019-10-15 01:14:24,778 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:24,778 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559269873] [2019-10-15 01:14:24,779 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:24,779 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:24,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-15 01:14:25,009 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559269873] [2019-10-15 01:14:25,009 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:14:25,010 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:14:25,010 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513106403] [2019-10-15 01:14:25,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:14:25,011 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:25,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:14:25,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:25,013 INFO L87 Difference]: Start difference. First operand 694 states and 964 transitions. Second operand 3 states. [2019-10-15 01:14:25,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:25,060 INFO L93 Difference]: Finished difference Result 1480 states and 2124 transitions. [2019-10-15 01:14:25,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:14:25,061 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 228 [2019-10-15 01:14:25,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:25,070 INFO L225 Difference]: With dead ends: 1480 [2019-10-15 01:14:25,070 INFO L226 Difference]: Without dead ends: 851 [2019-10-15 01:14:25,073 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:14:25,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2019-10-15 01:14:25,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 850. [2019-10-15 01:14:25,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2019-10-15 01:14:25,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1228 transitions. [2019-10-15 01:14:25,129 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1228 transitions. Word has length 228 [2019-10-15 01:14:25,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:25,130 INFO L462 AbstractCegarLoop]: Abstraction has 850 states and 1228 transitions. [2019-10-15 01:14:25,130 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:14:25,131 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1228 transitions. [2019-10-15 01:14:25,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-10-15 01:14:25,137 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:25,138 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:14:25,138 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:25,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:25,138 INFO L82 PathProgramCache]: Analyzing trace with hash -624836209, now seen corresponding path program 1 times [2019-10-15 01:14:25,139 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:25,139 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608069638] [2019-10-15 01:14:25,139 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:25,139 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:25,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:25,659 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608069638] [2019-10-15 01:14:25,659 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296642006] [2019-10-15 01:14:25,659 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 [2019-10-15 01:14:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:26,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 3007 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:26,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:26,642 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:14:26,643 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:27,058 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:27,137 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:27,218 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:27,413 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:27,414 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:27,414 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-15 01:14:27,415 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695831046] [2019-10-15 01:14:27,416 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:14:27,416 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:27,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:14:27,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:14:27,418 INFO L87 Difference]: Start difference. First operand 850 states and 1228 transitions. Second operand 9 states. [2019-10-15 01:14:28,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:28,955 INFO L93 Difference]: Finished difference Result 1678 states and 2436 transitions. [2019-10-15 01:14:28,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:14:28,955 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 230 [2019-10-15 01:14:28,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:28,959 INFO L225 Difference]: With dead ends: 1678 [2019-10-15 01:14:28,960 INFO L226 Difference]: Without dead ends: 864 [2019-10-15 01:14:28,962 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 449 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:14:28,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2019-10-15 01:14:28,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2019-10-15 01:14:28,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 864 states. [2019-10-15 01:14:28,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1246 transitions. [2019-10-15 01:14:29,000 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1246 transitions. Word has length 230 [2019-10-15 01:14:29,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:29,000 INFO L462 AbstractCegarLoop]: Abstraction has 864 states and 1246 transitions. [2019-10-15 01:14:29,000 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:14:29,001 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1246 transitions. [2019-10-15 01:14:29,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-10-15 01:14:29,006 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:29,006 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-10-15 01:14:29,215 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:29,215 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:29,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:29,216 INFO L82 PathProgramCache]: Analyzing trace with hash -485637097, now seen corresponding path program 1 times [2019-10-15 01:14:29,216 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:29,217 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484441423] [2019-10-15 01:14:29,217 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:29,217 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:29,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:29,759 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:29,759 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484441423] [2019-10-15 01:14:29,760 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611356554] [2019-10-15 01:14:29,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:30,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:30,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 01:14:30,532 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:30,853 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:30,921 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:30,989 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:30,989 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:30,990 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-15 01:14:30,990 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201408332] [2019-10-15 01:14:30,990 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:14:30,991 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:30,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:14:30,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:14:30,991 INFO L87 Difference]: Start difference. First operand 864 states and 1246 transitions. Second operand 7 states. [2019-10-15 01:14:32,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:32,093 INFO L93 Difference]: Finished difference Result 1679 states and 2442 transitions. [2019-10-15 01:14:32,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:14:32,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2019-10-15 01:14:32,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:32,100 INFO L225 Difference]: With dead ends: 1679 [2019-10-15 01:14:32,100 INFO L226 Difference]: Without dead ends: 866 [2019-10-15 01:14:32,104 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 456 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-15 01:14:32,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2019-10-15 01:14:32,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2019-10-15 01:14:32,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 866 states. [2019-10-15 01:14:32,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1249 transitions. [2019-10-15 01:14:32,138 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1249 transitions. Word has length 231 [2019-10-15 01:14:32,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:32,138 INFO L462 AbstractCegarLoop]: Abstraction has 866 states and 1249 transitions. [2019-10-15 01:14:32,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:14:32,138 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1249 transitions. [2019-10-15 01:14:32,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-15 01:14:32,144 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:32,144 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-15 01:14:32,359 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:32,360 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:32,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:32,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1993052600, now seen corresponding path program 1 times [2019-10-15 01:14:32,360 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:32,360 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27325596] [2019-10-15 01:14:32,361 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:32,361 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:32,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:32,710 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:32,710 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27325596] [2019-10-15 01:14:32,710 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839254041] [2019-10-15 01:14:32,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:33,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 3009 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:33,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:33,466 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:14:33,466 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:33,828 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:33,910 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:34,024 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:34,165 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:34,165 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:34,165 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-15 01:14:34,166 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229845313] [2019-10-15 01:14:34,167 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:14:34,167 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:34,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:14:34,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:14:34,168 INFO L87 Difference]: Start difference. First operand 866 states and 1249 transitions. Second operand 16 states. [2019-10-15 01:14:36,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:36,315 INFO L93 Difference]: Finished difference Result 1683 states and 2440 transitions. [2019-10-15 01:14:36,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:14:36,316 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 232 [2019-10-15 01:14:36,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:36,321 INFO L225 Difference]: With dead ends: 1683 [2019-10-15 01:14:36,322 INFO L226 Difference]: Without dead ends: 878 [2019-10-15 01:14:36,325 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 453 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-15 01:14:36,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2019-10-15 01:14:36,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 876. [2019-10-15 01:14:36,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2019-10-15 01:14:36,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1260 transitions. [2019-10-15 01:14:36,360 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1260 transitions. Word has length 232 [2019-10-15 01:14:36,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:36,361 INFO L462 AbstractCegarLoop]: Abstraction has 876 states and 1260 transitions. [2019-10-15 01:14:36,361 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:14:36,361 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1260 transitions. [2019-10-15 01:14:36,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-10-15 01:14:36,366 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:36,366 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-15 01:14:36,574 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:36,574 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:36,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:36,574 INFO L82 PathProgramCache]: Analyzing trace with hash 798150774, now seen corresponding path program 2 times [2019-10-15 01:14:36,575 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:36,575 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708578875] [2019-10-15 01:14:36,576 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:36,576 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:36,576 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:36,986 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:36,987 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708578875] [2019-10-15 01:14:36,988 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774318307] [2019-10-15 01:14:36,989 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 [2019-10-15 01:14:37,486 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:14:37,486 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:14:37,494 INFO L256 TraceCheckSpWp]: Trace formula consists of 2363 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:14:37,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:37,675 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:14:37,676 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:38,162 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:38,162 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:38,163 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-15 01:14:38,163 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358272664] [2019-10-15 01:14:38,164 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:14:38,165 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:38,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:14:38,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:14:38,166 INFO L87 Difference]: Start difference. First operand 876 states and 1260 transitions. Second operand 14 states. [2019-10-15 01:14:40,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:40,579 INFO L93 Difference]: Finished difference Result 2873 states and 4167 transitions. [2019-10-15 01:14:40,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:14:40,580 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 233 [2019-10-15 01:14:40,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:40,604 INFO L225 Difference]: With dead ends: 2873 [2019-10-15 01:14:40,604 INFO L226 Difference]: Without dead ends: 2560 [2019-10-15 01:14:40,607 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 464 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-15 01:14:40,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2019-10-15 01:14:40,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 2199. [2019-10-15 01:14:40,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2199 states. [2019-10-15 01:14:40,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 3290 transitions. [2019-10-15 01:14:40,735 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 3290 transitions. Word has length 233 [2019-10-15 01:14:40,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:40,736 INFO L462 AbstractCegarLoop]: Abstraction has 2199 states and 3290 transitions. [2019-10-15 01:14:40,736 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:14:40,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 3290 transitions. [2019-10-15 01:14:40,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-10-15 01:14:40,747 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:40,747 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-15 01:14:40,957 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:40,957 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:40,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:40,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1778277772, now seen corresponding path program 1 times [2019-10-15 01:14:40,958 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:40,958 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576867575] [2019-10-15 01:14:40,958 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:40,959 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:40,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:41,388 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:41,388 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576867575] [2019-10-15 01:14:41,388 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604127383] [2019-10-15 01:14:41,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:42,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 3011 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:14:42,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:42,245 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:14:42,245 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:42,558 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:14:42,632 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:42,707 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:42,847 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:42,847 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:42,847 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-15 01:14:42,847 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580464280] [2019-10-15 01:14:42,848 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:14:42,848 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:42,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:14:42,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:14:42,849 INFO L87 Difference]: Start difference. First operand 2199 states and 3290 transitions. Second operand 15 states. [2019-10-15 01:14:44,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:44,972 INFO L93 Difference]: Finished difference Result 4292 states and 6456 transitions. [2019-10-15 01:14:44,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:14:44,973 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 234 [2019-10-15 01:14:44,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:44,985 INFO L225 Difference]: With dead ends: 4292 [2019-10-15 01:14:44,985 INFO L226 Difference]: Without dead ends: 2205 [2019-10-15 01:14:44,994 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 457 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:14:44,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2019-10-15 01:14:45,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 2199. [2019-10-15 01:14:45,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2199 states. [2019-10-15 01:14:45,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 3288 transitions. [2019-10-15 01:14:45,086 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 3288 transitions. Word has length 234 [2019-10-15 01:14:45,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:45,087 INFO L462 AbstractCegarLoop]: Abstraction has 2199 states and 3288 transitions. [2019-10-15 01:14:45,087 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:14:45,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 3288 transitions. [2019-10-15 01:14:45,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-10-15 01:14:45,098 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:45,098 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-15 01:14:45,305 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:45,306 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:45,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:45,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1284224359, now seen corresponding path program 1 times [2019-10-15 01:14:45,306 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:45,306 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028584993] [2019-10-15 01:14:45,306 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:45,307 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:45,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:45,549 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:14:45,550 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028584993] [2019-10-15 01:14:45,550 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459772641] [2019-10-15 01:14:45,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:46,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 3012 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:46,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-15 01:14:46,382 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:46,629 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:46,680 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:46,748 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:14:46,749 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:46,749 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-15 01:14:46,749 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763437001] [2019-10-15 01:14:46,752 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:14:46,752 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:46,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:14:46,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:14:46,753 INFO L87 Difference]: Start difference. First operand 2199 states and 3288 transitions. Second operand 12 states. [2019-10-15 01:14:48,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:48,075 INFO L93 Difference]: Finished difference Result 3319 states and 4870 transitions. [2019-10-15 01:14:48,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:14:48,076 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 235 [2019-10-15 01:14:48,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:48,090 INFO L225 Difference]: With dead ends: 3319 [2019-10-15 01:14:48,090 INFO L226 Difference]: Without dead ends: 1725 [2019-10-15 01:14:48,098 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 464 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-10-15 01:14:48,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2019-10-15 01:14:48,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1725. [2019-10-15 01:14:48,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1725 states. [2019-10-15 01:14:48,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2508 transitions. [2019-10-15 01:14:48,174 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2508 transitions. Word has length 235 [2019-10-15 01:14:48,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:48,174 INFO L462 AbstractCegarLoop]: Abstraction has 1725 states and 2508 transitions. [2019-10-15 01:14:48,174 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:14:48,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2508 transitions. [2019-10-15 01:14:48,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-15 01:14:48,181 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:48,182 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-10-15 01:14:48,396 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:48,397 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:48,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:48,397 INFO L82 PathProgramCache]: Analyzing trace with hash -348984940, now seen corresponding path program 2 times [2019-10-15 01:14:48,397 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:48,398 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533358051] [2019-10-15 01:14:48,398 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:48,399 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:48,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:48,744 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 01:14:48,745 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533358051] [2019-10-15 01:14:48,745 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568361210] [2019-10-15 01:14:48,745 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:49,309 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:14:49,309 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:14:49,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 2366 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:14:49,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:49,459 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-15 01:14:49,460 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:49,914 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-15 01:14:49,915 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:14:49,915 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [15] total 27 [2019-10-15 01:14:49,915 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124384200] [2019-10-15 01:14:49,917 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 01:14:49,917 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:49,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 01:14:49,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2019-10-15 01:14:49,918 INFO L87 Difference]: Start difference. First operand 1725 states and 2508 transitions. Second operand 14 states. [2019-10-15 01:14:52,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:14:52,396 INFO L93 Difference]: Finished difference Result 5707 states and 8365 transitions. [2019-10-15 01:14:52,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-15 01:14:52,396 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 236 [2019-10-15 01:14:52,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:14:52,419 INFO L225 Difference]: With dead ends: 5707 [2019-10-15 01:14:52,419 INFO L226 Difference]: Without dead ends: 5074 [2019-10-15 01:14:52,423 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 471 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=1534, Unknown=0, NotChecked=0, Total=1722 [2019-10-15 01:14:52,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5074 states. [2019-10-15 01:14:52,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5074 to 4350. [2019-10-15 01:14:52,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4350 states. [2019-10-15 01:14:52,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4350 states to 4350 states and 6593 transitions. [2019-10-15 01:14:52,618 INFO L78 Accepts]: Start accepts. Automaton has 4350 states and 6593 transitions. Word has length 236 [2019-10-15 01:14:52,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:14:52,619 INFO L462 AbstractCegarLoop]: Abstraction has 4350 states and 6593 transitions. [2019-10-15 01:14:52,619 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 01:14:52,619 INFO L276 IsEmpty]: Start isEmpty. Operand 4350 states and 6593 transitions. [2019-10-15 01:14:52,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-15 01:14:52,643 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:14:52,643 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-15 01:14:52,860 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:52,860 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:14:52,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:14:52,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1835842095, now seen corresponding path program 1 times [2019-10-15 01:14:52,861 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:14:52,861 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780894269] [2019-10-15 01:14:52,862 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:52,862 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:14:52,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:14:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:14:53,001 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780894269] [2019-10-15 01:14:53,001 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718908349] [2019-10-15 01:14:53,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:14:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:14:53,654 INFO L256 TraceCheckSpWp]: Trace formula consists of 3013 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:14:53,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:14:53,820 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-15 01:14:53,820 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:14:54,087 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:54,121 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:14:54,159 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 01:14:54,160 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:14:54,160 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-15 01:14:54,160 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805869765] [2019-10-15 01:14:54,161 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:14:54,161 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:14:54,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:14:54,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:14:54,162 INFO L87 Difference]: Start difference. First operand 4350 states and 6593 transitions. Second operand 7 states.