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_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:14:41,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:14:41,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:14:41,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:14:41,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:14:41,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:14:41,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:14:41,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:14:41,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:14:41,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:14:41,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:14:41,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:14:41,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:14:41,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:14:41,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:14:41,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:14:41,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:14:41,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:14:41,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:14:41,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:14:41,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:14:41,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:14:41,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:14:41,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:14:41,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:14:41,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:14:41,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:14:41,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:14:41,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:14:41,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:14:41,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:14:41,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:14:41,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:14:41,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:14:41,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:14:41,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:14:41,919 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:14:41,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:14:41,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:14:41,920 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:14:41,921 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:14:41,922 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:14:41,941 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:14:41,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:14:41,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:14:41,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:14:41,944 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:14:41,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:14:41,944 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:14:41,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:14:41,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:14:41,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:14:41,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:14:41,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:14:41,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:14:41,947 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:14:41,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:14:41,947 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:14:41,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:14:41,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:14:41,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:14:41,948 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:14:41,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:14:41,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:14:41,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:14:41,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:14:41,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:14:41,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:14:41,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:14:41,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:14:41,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:14:42,232 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:14:42,245 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:14:42,248 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:14:42,249 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:14:42,250 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:14:42,251 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product19.cil.c [2019-10-13 21:14:42,308 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/582315426/dde02bf6db8b4d2eb31874ebe90f4c5b/FLAG91a989abd [2019-10-13 21:14:42,930 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:14:42,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product19.cil.c [2019-10-13 21:14:42,954 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/582315426/dde02bf6db8b4d2eb31874ebe90f4c5b/FLAG91a989abd [2019-10-13 21:14:43,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/582315426/dde02bf6db8b4d2eb31874ebe90f4c5b [2019-10-13 21:14:43,157 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:14:43,160 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:14:43,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:43,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:14:43,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:14:43,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:43" (1/1) ... [2019-10-13 21:14:43,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@286ff162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:43, skipping insertion in model container [2019-10-13 21:14:43,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:14:43" (1/1) ... [2019-10-13 21:14:43,178 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:14:43,265 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:14:44,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:44,033 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:14:44,203 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:14:44,297 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:14:44,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:44 WrapperNode [2019-10-13 21:14:44,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:14:44,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:14:44,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:14:44,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:14:44,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:44" (1/1) ... [2019-10-13 21:14:44,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:44" (1/1) ... [2019-10-13 21:14:44,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:44" (1/1) ... [2019-10-13 21:14:44,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:44" (1/1) ... [2019-10-13 21:14:44,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:44" (1/1) ... [2019-10-13 21:14:44,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:44" (1/1) ... [2019-10-13 21:14:44,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:44" (1/1) ... [2019-10-13 21:14:44,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:14:44,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:14:44,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:14:44,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:14:44,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:14:44,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:14:44,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:14:44,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:44,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:44,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:44,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:44,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:14:44,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:14:44,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:14:44,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:14:44,602 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:14:44,603 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:14:44,603 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:14:44,603 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:14:44,603 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:14:44,603 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:14:44,604 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:44,604 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:14:44,604 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:44,604 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:14:44,605 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:14:44,605 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:14:44,606 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:14:44,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:14:44,606 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:14:44,606 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:14:44,606 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:14:44,607 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:14:44,607 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:14:44,607 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:14:44,607 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:14:44,607 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:14:44,607 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:14:44,608 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:14:44,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:14:44,608 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:14:44,608 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:14:44,608 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:14:44,609 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:14:44,609 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:14:44,609 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:14:44,609 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:14:44,609 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:14:44,609 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:14:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:14:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:14:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:14:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:14:44,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:14:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:14:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:14:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:14:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:14:44,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:14:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:14:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:14:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:14:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:14:44,612 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:14:44,613 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:14:44,613 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:14:44,613 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:14:44,613 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:14:44,613 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:14:44,614 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:14:44,614 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:14:44,614 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:14:44,614 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:14:44,614 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:14:44,615 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:14:44,615 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:14:44,615 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:14:44,615 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:14:44,615 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:14:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:14:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:14:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:14:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:14:44,616 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:14:44,617 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:14:44,617 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:14:44,617 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:14:44,617 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:14:44,617 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:14:44,618 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:14:44,618 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:14:44,618 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:14:44,618 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:14:44,618 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:14:44,619 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:14:44,619 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:14:44,619 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:14:44,619 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:14:44,619 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:14:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:14:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:14:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:14:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:14:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:14:44,620 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:14:44,621 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:14:44,621 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:14:44,621 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:14:44,621 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:14:44,621 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:14:44,622 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:14:44,622 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:14:44,622 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:14:44,622 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:14:44,623 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:14:44,623 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:14:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:14:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:14:44,623 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:14:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:14:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:14:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:14:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:14:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:14:44,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:14:44,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:14:44,625 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:14:44,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:14:44,625 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:14:44,625 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:14:44,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:14:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:14:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:14:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:14:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:14:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:14:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:14:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:14:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:14:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:14:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:14:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:14:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:14:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:14:44,627 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:14:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:14:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:14:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:14:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:14:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:14:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:14:44,628 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:14:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:14:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:14:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:14:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:14:44,629 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:14:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:14:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:14:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:14:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:14:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:14:44,630 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:14:44,631 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:14:44,631 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:14:44,631 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:14:44,631 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:14:44,631 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:14:44,631 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:14:44,631 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:14:44,632 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:14:44,632 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:14:44,632 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:14:44,632 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:14:44,632 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:14:44,632 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:14:44,632 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:14:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:14:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:14:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:14:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:14:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:14:44,633 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:14:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:14:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:14:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:14:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:14:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:14:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:14:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:14:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:14:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:14:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:14:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:14:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:14:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:14:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:14:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:14:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:14:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:14:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:14:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:14:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:14:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:14:44,636 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:14:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:14:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:14:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:14:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:14:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:14:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:14:44,637 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:14:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:14:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:14:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:14:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:14:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:14:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:14:44,638 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:14:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:14:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:14:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:14:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:14:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:14:44,639 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:14:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:14:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:14:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:14:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:14:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:14:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:14:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:14:44,640 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:14:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:14:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:14:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:14:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:14:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:14:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:14:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:14:44,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:14:44,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:14:46,978 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:14:46,979 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:14:46,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:46 BoogieIcfgContainer [2019-10-13 21:14:46,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:14:46,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:14:46,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:14:46,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:14:46,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:14:43" (1/3) ... [2019-10-13 21:14:46,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@236a9ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:46, skipping insertion in model container [2019-10-13 21:14:46,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:14:44" (2/3) ... [2019-10-13 21:14:46,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@236a9ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:14:46, skipping insertion in model container [2019-10-13 21:14:46,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:14:46" (3/3) ... [2019-10-13 21:14:46,991 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product19.cil.c [2019-10-13 21:14:47,001 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:14:47,016 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:14:47,028 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:14:47,072 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:14:47,072 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:14:47,072 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:14:47,072 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:14:47,073 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:14:47,073 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:14:47,073 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:14:47,073 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:14:47,113 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states. [2019-10-13 21:14:47,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-13 21:14:47,138 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:47,140 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:47,142 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:47,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:47,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1324397403, now seen corresponding path program 1 times [2019-10-13 21:14:47,158 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:47,158 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36546874] [2019-10-13 21:14:47,159 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:47,159 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:47,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:47,794 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:47,795 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36546874] [2019-10-13 21:14:47,796 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:47,796 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:14:47,797 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47178313] [2019-10-13 21:14:47,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:14:47,806 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:47,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:14:47,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:14:47,824 INFO L87 Difference]: Start difference. First operand 496 states. Second operand 2 states. [2019-10-13 21:14:47,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:47,950 INFO L93 Difference]: Finished difference Result 734 states and 963 transitions. [2019-10-13 21:14:47,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:14:47,952 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 179 [2019-10-13 21:14:47,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:47,975 INFO L225 Difference]: With dead ends: 734 [2019-10-13 21:14:47,975 INFO L226 Difference]: Without dead ends: 473 [2019-10-13 21:14:47,982 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:14:48,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2019-10-13 21:14:48,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2019-10-13 21:14:48,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2019-10-13 21:14:48,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 624 transitions. [2019-10-13 21:14:48,074 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 624 transitions. Word has length 179 [2019-10-13 21:14:48,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:48,079 INFO L462 AbstractCegarLoop]: Abstraction has 473 states and 624 transitions. [2019-10-13 21:14:48,079 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:14:48,079 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 624 transitions. [2019-10-13 21:14:48,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-10-13 21:14:48,087 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:48,088 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:48,088 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:48,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:48,089 INFO L82 PathProgramCache]: Analyzing trace with hash -703879322, now seen corresponding path program 1 times [2019-10-13 21:14:48,089 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:48,090 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745438512] [2019-10-13 21:14:48,090 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:48,091 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:48,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:48,390 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:48,391 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745438512] [2019-10-13 21:14:48,391 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:48,391 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:48,392 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660351393] [2019-10-13 21:14:48,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:48,399 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:48,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:48,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:48,400 INFO L87 Difference]: Start difference. First operand 473 states and 624 transitions. Second operand 3 states. [2019-10-13 21:14:48,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:48,484 INFO L93 Difference]: Finished difference Result 717 states and 928 transitions. [2019-10-13 21:14:48,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:48,485 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2019-10-13 21:14:48,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:48,491 INFO L225 Difference]: With dead ends: 717 [2019-10-13 21:14:48,491 INFO L226 Difference]: Without dead ends: 476 [2019-10-13 21:14:48,495 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:48,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2019-10-13 21:14:48,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 475. [2019-10-13 21:14:48,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2019-10-13 21:14:48,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 626 transitions. [2019-10-13 21:14:48,544 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 626 transitions. Word has length 180 [2019-10-13 21:14:48,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:48,546 INFO L462 AbstractCegarLoop]: Abstraction has 475 states and 626 transitions. [2019-10-13 21:14:48,546 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:48,547 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 626 transitions. [2019-10-13 21:14:48,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-13 21:14:48,554 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:48,555 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:48,556 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:48,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:48,556 INFO L82 PathProgramCache]: Analyzing trace with hash 655198354, now seen corresponding path program 1 times [2019-10-13 21:14:48,556 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:48,556 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301638728] [2019-10-13 21:14:48,556 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:48,557 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:48,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:48,808 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:14:48,808 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301638728] [2019-10-13 21:14:48,808 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:48,809 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:48,809 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892466447] [2019-10-13 21:14:48,810 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:48,810 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:48,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:48,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:48,811 INFO L87 Difference]: Start difference. First operand 475 states and 626 transitions. Second operand 3 states. [2019-10-13 21:14:48,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:48,874 INFO L93 Difference]: Finished difference Result 926 states and 1250 transitions. [2019-10-13 21:14:48,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:48,875 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2019-10-13 21:14:48,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:48,883 INFO L225 Difference]: With dead ends: 926 [2019-10-13 21:14:48,883 INFO L226 Difference]: Without dead ends: 516 [2019-10-13 21:14:48,887 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:48,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2019-10-13 21:14:48,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 515. [2019-10-13 21:14:48,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2019-10-13 21:14:48,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 695 transitions. [2019-10-13 21:14:48,929 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 695 transitions. Word has length 186 [2019-10-13 21:14:48,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:48,930 INFO L462 AbstractCegarLoop]: Abstraction has 515 states and 695 transitions. [2019-10-13 21:14:48,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:14:48,930 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 695 transitions. [2019-10-13 21:14:48,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-13 21:14:48,938 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:48,939 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:48,939 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:48,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:48,939 INFO L82 PathProgramCache]: Analyzing trace with hash 833813007, now seen corresponding path program 1 times [2019-10-13 21:14:48,940 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:48,940 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250889826] [2019-10-13 21:14:48,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:48,940 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:48,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:49,174 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:14:49,175 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250889826] [2019-10-13 21:14:49,180 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:49,181 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:14:49,181 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916325689] [2019-10-13 21:14:49,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:14:49,182 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:49,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:14:49,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:14:49,185 INFO L87 Difference]: Start difference. First operand 515 states and 695 transitions. Second operand 8 states. [2019-10-13 21:14:49,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:49,258 INFO L93 Difference]: Finished difference Result 743 states and 984 transitions. [2019-10-13 21:14:49,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:14:49,259 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 187 [2019-10-13 21:14:49,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:49,265 INFO L225 Difference]: With dead ends: 743 [2019-10-13 21:14:49,266 INFO L226 Difference]: Without dead ends: 515 [2019-10-13 21:14:49,267 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:14:49,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2019-10-13 21:14:49,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 515. [2019-10-13 21:14:49,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2019-10-13 21:14:49,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 694 transitions. [2019-10-13 21:14:49,296 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 694 transitions. Word has length 187 [2019-10-13 21:14:49,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:49,297 INFO L462 AbstractCegarLoop]: Abstraction has 515 states and 694 transitions. [2019-10-13 21:14:49,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:14:49,297 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 694 transitions. [2019-10-13 21:14:49,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-10-13 21:14:49,301 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:49,302 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:49,302 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:49,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:49,302 INFO L82 PathProgramCache]: Analyzing trace with hash 2036488964, now seen corresponding path program 1 times [2019-10-13 21:14:49,303 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:49,304 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629455115] [2019-10-13 21:14:49,304 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:49,304 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:49,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:49,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:49,605 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:14:49,606 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629455115] [2019-10-13 21:14:49,606 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:49,606 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:14:49,606 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252393469] [2019-10-13 21:14:49,607 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:14:49,607 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:49,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:14:49,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:14:49,609 INFO L87 Difference]: Start difference. First operand 515 states and 694 transitions. Second operand 7 states. [2019-10-13 21:14:52,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:52,192 INFO L93 Difference]: Finished difference Result 994 states and 1300 transitions. [2019-10-13 21:14:52,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:14:52,193 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2019-10-13 21:14:52,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:52,200 INFO L225 Difference]: With dead ends: 994 [2019-10-13 21:14:52,200 INFO L226 Difference]: Without dead ends: 758 [2019-10-13 21:14:52,202 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:14:52,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2019-10-13 21:14:52,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 749. [2019-10-13 21:14:52,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2019-10-13 21:14:52,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 988 transitions. [2019-10-13 21:14:52,282 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 988 transitions. Word has length 194 [2019-10-13 21:14:52,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:52,283 INFO L462 AbstractCegarLoop]: Abstraction has 749 states and 988 transitions. [2019-10-13 21:14:52,283 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:14:52,283 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 988 transitions. [2019-10-13 21:14:52,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-13 21:14:52,287 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:52,288 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:52,288 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:52,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:52,289 INFO L82 PathProgramCache]: Analyzing trace with hash 820930343, now seen corresponding path program 1 times [2019-10-13 21:14:52,289 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:52,289 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576708223] [2019-10-13 21:14:52,289 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:52,290 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:52,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:14:52,754 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576708223] [2019-10-13 21:14:52,754 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:52,754 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2019-10-13 21:14:52,754 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261422925] [2019-10-13 21:14:52,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-10-13 21:14:52,755 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:52,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-10-13 21:14:52,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=507, Unknown=0, NotChecked=0, Total=552 [2019-10-13 21:14:52,756 INFO L87 Difference]: Start difference. First operand 749 states and 988 transitions. Second operand 24 states. [2019-10-13 21:14:53,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:53,499 INFO L93 Difference]: Finished difference Result 1301 states and 1693 transitions. [2019-10-13 21:14:53,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-10-13 21:14:53,499 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 195 [2019-10-13 21:14:53,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:53,505 INFO L225 Difference]: With dead ends: 1301 [2019-10-13 21:14:53,505 INFO L226 Difference]: Without dead ends: 793 [2019-10-13 21:14:53,508 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=1037, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 21:14:53,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2019-10-13 21:14:53,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 789. [2019-10-13 21:14:53,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2019-10-13 21:14:53,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1036 transitions. [2019-10-13 21:14:53,545 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1036 transitions. Word has length 195 [2019-10-13 21:14:53,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:53,546 INFO L462 AbstractCegarLoop]: Abstraction has 789 states and 1036 transitions. [2019-10-13 21:14:53,546 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-10-13 21:14:53,546 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1036 transitions. [2019-10-13 21:14:53,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-10-13 21:14:53,551 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:53,551 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:53,552 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:53,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:53,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1287311709, now seen corresponding path program 1 times [2019-10-13 21:14:53,552 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:53,552 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830502605] [2019-10-13 21:14:53,553 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:53,553 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:53,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:53,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:53,772 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:14:53,773 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830502605] [2019-10-13 21:14:53,774 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:53,774 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:14:53,774 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944302063] [2019-10-13 21:14:53,775 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:14:53,775 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:53,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:14:53,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:14:53,776 INFO L87 Difference]: Start difference. First operand 789 states and 1036 transitions. Second operand 8 states. [2019-10-13 21:14:58,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:58,197 INFO L93 Difference]: Finished difference Result 2335 states and 3002 transitions. [2019-10-13 21:14:58,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:14:58,202 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 226 [2019-10-13 21:14:58,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:58,219 INFO L225 Difference]: With dead ends: 2335 [2019-10-13 21:14:58,219 INFO L226 Difference]: Without dead ends: 1847 [2019-10-13 21:14:58,225 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:14:58,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2019-10-13 21:14:58,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1833. [2019-10-13 21:14:58,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1833 states. [2019-10-13 21:14:58,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2372 transitions. [2019-10-13 21:14:58,380 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2372 transitions. Word has length 226 [2019-10-13 21:14:58,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:58,384 INFO L462 AbstractCegarLoop]: Abstraction has 1833 states and 2372 transitions. [2019-10-13 21:14:58,384 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:14:58,384 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2372 transitions. [2019-10-13 21:14:58,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-10-13 21:14:58,394 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:58,394 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:58,395 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:58,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:58,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1051299991, now seen corresponding path program 1 times [2019-10-13 21:14:58,396 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:58,396 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044109168] [2019-10-13 21:14:58,396 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:58,397 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:58,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:58,803 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:14:58,803 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044109168] [2019-10-13 21:14:58,803 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:58,804 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-10-13 21:14:58,804 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024683681] [2019-10-13 21:14:58,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-13 21:14:58,805 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:58,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-13 21:14:58,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:14:58,805 INFO L87 Difference]: Start difference. First operand 1833 states and 2372 transitions. Second operand 18 states. [2019-10-13 21:14:59,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:59,285 INFO L93 Difference]: Finished difference Result 2522 states and 3249 transitions. [2019-10-13 21:14:59,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-10-13 21:14:59,286 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 227 [2019-10-13 21:14:59,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:59,339 INFO L225 Difference]: With dead ends: 2522 [2019-10-13 21:14:59,339 INFO L226 Difference]: Without dead ends: 1379 [2019-10-13 21:14:59,344 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:14:59,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2019-10-13 21:14:59,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1373. [2019-10-13 21:14:59,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1373 states. [2019-10-13 21:14:59,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1798 transitions. [2019-10-13 21:14:59,434 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1798 transitions. Word has length 227 [2019-10-13 21:14:59,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:59,434 INFO L462 AbstractCegarLoop]: Abstraction has 1373 states and 1798 transitions. [2019-10-13 21:14:59,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-13 21:14:59,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1798 transitions. [2019-10-13 21:14:59,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-13 21:14:59,443 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:59,443 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:59,444 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:59,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:59,444 INFO L82 PathProgramCache]: Analyzing trace with hash 228824622, now seen corresponding path program 1 times [2019-10-13 21:14:59,445 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:59,445 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771672765] [2019-10-13 21:14:59,445 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:59,445 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:59,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:14:59,686 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771672765] [2019-10-13 21:14:59,688 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66416631] [2019-10-13 21:14:59,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:00,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 2733 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:00,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:00,544 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 21:15:00,546 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:01,021 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:01,101 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:01,177 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:01,319 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:15:01,320 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:01,320 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-10-13 21:15:01,320 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046023433] [2019-10-13 21:15:01,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:15:01,322 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:01,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:15:01,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:15:01,323 INFO L87 Difference]: Start difference. First operand 1373 states and 1798 transitions. Second operand 9 states. [2019-10-13 21:15:02,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:02,966 INFO L93 Difference]: Finished difference Result 2724 states and 3576 transitions. [2019-10-13 21:15:02,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:15:02,968 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 236 [2019-10-13 21:15:02,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:02,980 INFO L225 Difference]: With dead ends: 2724 [2019-10-13 21:15:02,980 INFO L226 Difference]: Without dead ends: 1387 [2019-10-13 21:15:02,985 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 458 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:15:02,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2019-10-13 21:15:03,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1387. [2019-10-13 21:15:03,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1387 states. [2019-10-13 21:15:03,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 1816 transitions. [2019-10-13 21:15:03,089 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 1816 transitions. Word has length 236 [2019-10-13 21:15:03,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:03,090 INFO L462 AbstractCegarLoop]: Abstraction has 1387 states and 1816 transitions. [2019-10-13 21:15:03,090 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:15:03,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 1816 transitions. [2019-10-13 21:15:03,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-10-13 21:15:03,098 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:03,098 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:03,314 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:03,314 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:03,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:03,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1901572560, now seen corresponding path program 1 times [2019-10-13 21:15:03,315 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:03,315 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880876128] [2019-10-13 21:15:03,315 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:03,315 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:03,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:03,607 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880876128] [2019-10-13 21:15:03,607 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712740857] [2019-10-13 21:15:03,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:04,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:04,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:04,277 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 21:15:04,278 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:04,548 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:04,596 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:04,669 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:15:04,670 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:04,670 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:15:04,670 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550686923] [2019-10-13 21:15:04,671 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:15:04,671 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:04,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:15:04,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:15:04,672 INFO L87 Difference]: Start difference. First operand 1387 states and 1816 transitions. Second operand 7 states. [2019-10-13 21:15:05,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:05,800 INFO L93 Difference]: Finished difference Result 2725 states and 3580 transitions. [2019-10-13 21:15:05,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:15:05,801 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2019-10-13 21:15:05,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:05,809 INFO L225 Difference]: With dead ends: 2725 [2019-10-13 21:15:05,809 INFO L226 Difference]: Without dead ends: 1389 [2019-10-13 21:15:05,815 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 465 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:15:05,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2019-10-13 21:15:05,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1389. [2019-10-13 21:15:05,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1389 states. [2019-10-13 21:15:05,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1819 transitions. [2019-10-13 21:15:05,892 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1819 transitions. Word has length 237 [2019-10-13 21:15:05,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:05,892 INFO L462 AbstractCegarLoop]: Abstraction has 1389 states and 1819 transitions. [2019-10-13 21:15:05,892 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:15:05,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1819 transitions. [2019-10-13 21:15:05,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2019-10-13 21:15:05,898 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:05,898 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:06,111 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:06,112 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:06,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:06,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1012091376, now seen corresponding path program 1 times [2019-10-13 21:15:06,113 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:06,113 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600996735] [2019-10-13 21:15:06,113 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:06,113 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:06,113 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:06,288 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:06,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600996735] [2019-10-13 21:15:06,289 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536906287] [2019-10-13 21:15:06,289 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:06,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 2735 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:06,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:07,019 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:07,019 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:07,435 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:07,511 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:07,568 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 21:15:07,675 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:07,676 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-13 21:15:07,676 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180339587] [2019-10-13 21:15:07,681 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:15:07,681 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:07,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:15:07,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-13 21:15:07,682 INFO L87 Difference]: Start difference. First operand 1389 states and 1819 transitions. Second operand 16 states. [2019-10-13 21:15:09,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:09,484 INFO L93 Difference]: Finished difference Result 2729 states and 3580 transitions. [2019-10-13 21:15:09,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:09,485 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 238 [2019-10-13 21:15:09,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:09,497 INFO L225 Difference]: With dead ends: 2729 [2019-10-13 21:15:09,497 INFO L226 Difference]: Without dead ends: 1401 [2019-10-13 21:15:09,504 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 462 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:15:09,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2019-10-13 21:15:09,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1399. [2019-10-13 21:15:09,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1399 states. [2019-10-13 21:15:09,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 1830 transitions. [2019-10-13 21:15:09,586 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 1830 transitions. Word has length 238 [2019-10-13 21:15:09,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:09,586 INFO L462 AbstractCegarLoop]: Abstraction has 1399 states and 1830 transitions. [2019-10-13 21:15:09,586 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:15:09,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 1830 transitions. [2019-10-13 21:15:09,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2019-10-13 21:15:09,592 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:09,593 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:09,812 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:09,812 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:09,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:09,813 INFO L82 PathProgramCache]: Analyzing trace with hash -17313324, now seen corresponding path program 2 times [2019-10-13 21:15:09,814 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:09,814 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541024913] [2019-10-13 21:15:09,814 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:09,814 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:09,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:10,790 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:10,792 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541024913] [2019-10-13 21:15:10,793 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948500048] [2019-10-13 21:15:10,793 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:11,510 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:15:11,510 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:15:11,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 2630 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:11,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-13 21:15:11,862 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:12,209 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:12,290 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:12,386 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:15:12,386 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:12,387 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [29] total 39 [2019-10-13 21:15:12,387 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563161882] [2019-10-13 21:15:12,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:15:12,388 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:12,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:15:12,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1385, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:15:12,389 INFO L87 Difference]: Start difference. First operand 1399 states and 1830 transitions. Second operand 12 states. [2019-10-13 21:15:13,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:13,580 INFO L93 Difference]: Finished difference Result 2720 states and 3568 transitions. [2019-10-13 21:15:13,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:15:13,580 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 239 [2019-10-13 21:15:13,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:13,588 INFO L225 Difference]: With dead ends: 2720 [2019-10-13 21:15:13,588 INFO L226 Difference]: Without dead ends: 1401 [2019-10-13 21:15:13,593 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 480 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=119, Invalid=1603, Unknown=0, NotChecked=0, Total=1722 [2019-10-13 21:15:13,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2019-10-13 21:15:13,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1399. [2019-10-13 21:15:13,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1399 states. [2019-10-13 21:15:13,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 1829 transitions. [2019-10-13 21:15:13,657 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 1829 transitions. Word has length 239 [2019-10-13 21:15:13,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:13,657 INFO L462 AbstractCegarLoop]: Abstraction has 1399 states and 1829 transitions. [2019-10-13 21:15:13,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:15:13,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 1829 transitions. [2019-10-13 21:15:13,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2019-10-13 21:15:13,661 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:13,661 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, 1, 1, 1, 1, 1] [2019-10-13 21:15:13,869 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:13,870 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:13,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:13,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1873975970, now seen corresponding path program 3 times [2019-10-13 21:15:13,871 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:13,871 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822511377] [2019-10-13 21:15:13,871 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:13,872 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:13,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:14,497 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:15:14,497 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822511377] [2019-10-13 21:15:14,497 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099041082] [2019-10-13 21:15:14,498 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true