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_spec3_product29.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:15:51,892 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:15:51,895 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:15:51,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:15:51,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:15:51,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:15:51,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:15:51,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:15:51,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:15:51,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:15:51,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:15:51,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:15:51,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:15:51,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:15:51,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:15:51,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:15:51,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:15:51,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:15:51,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:15:51,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:15:51,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:15:51,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:15:51,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:15:51,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:15:51,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:15:51,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:15:51,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:15:51,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:15:51,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:15:51,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:15:51,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:15:51,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:15:51,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:15:51,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:15:51,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:15:51,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:15:51,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:15:51,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:15:51,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:15:51,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:15:51,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:15:51,974 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 21:15:51,988 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:15:51,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:15:51,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:15:51,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:15:51,990 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:15:51,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:15:51,990 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:15:51,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:15:51,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:15:51,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:15:51,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:15:51,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:15:51,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:15:51,991 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:15:51,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:15:51,992 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:15:51,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:15:51,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:15:51,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:15:51,993 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:15:51,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:15:51,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:51,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:15:51,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:15:51,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:15:51,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:15:51,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:15:51,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:15:51,995 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 21:15:52,294 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:15:52,308 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:15:52,312 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:15:52,313 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:15:52,314 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:15:52,315 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product29.cil.c [2019-10-13 21:15:52,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dc6399b3/0f6f5acb0c9c4cdd895cdde773dd1e2c/FLAGc5e0efee6 [2019-10-13 21:15:53,021 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:15:53,022 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product29.cil.c [2019-10-13 21:15:53,054 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dc6399b3/0f6f5acb0c9c4cdd895cdde773dd1e2c/FLAGc5e0efee6 [2019-10-13 21:15:53,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7dc6399b3/0f6f5acb0c9c4cdd895cdde773dd1e2c [2019-10-13 21:15:53,224 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:15:53,225 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:15:53,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:53,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:15:53,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:15:53,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:53" (1/1) ... [2019-10-13 21:15:53,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d9af163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:53, skipping insertion in model container [2019-10-13 21:15:53,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:53" (1/1) ... [2019-10-13 21:15:53,240 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:15:53,315 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:15:54,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:54,082 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:15:54,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:54,344 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:15:54,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:54 WrapperNode [2019-10-13 21:15:54,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:54,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:15:54,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:15:54,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:15:54,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:54" (1/1) ... [2019-10-13 21:15:54,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:54" (1/1) ... [2019-10-13 21:15:54,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:54" (1/1) ... [2019-10-13 21:15:54,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:54" (1/1) ... [2019-10-13 21:15:54,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:54" (1/1) ... [2019-10-13 21:15:54,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:54" (1/1) ... [2019-10-13 21:15:54,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:54" (1/1) ... [2019-10-13 21:15:54,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:15:54,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:15:54,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:15:54,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:15:54,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:54" (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 21:15:54,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:15:54,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:15:54,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:54,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:54,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:54,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:54,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:15:54,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:15:54,646 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:15:54,646 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:15:54,647 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:15:54,647 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:15:54,647 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:15:54,647 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:15:54,647 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:15:54,648 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:15:54,648 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:15:54,648 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:15:54,648 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:15:54,648 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:15:54,649 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:15:54,650 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:15:54,651 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:15:54,651 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:15:54,651 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:15:54,651 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:15:54,651 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:15:54,651 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:15:54,652 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:15:54,652 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:15:54,652 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:15:54,652 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:15:54,652 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:15:54,652 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:15:54,653 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:15:54,653 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:15:54,653 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:15:54,653 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:15:54,654 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:15:54,654 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:15:54,654 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:54,654 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:15:54,654 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:54,654 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:15:54,654 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:15:54,655 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:15:54,655 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:15:54,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:15:54,655 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:15:54,655 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:15:54,655 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:15:54,656 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:15:54,656 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:15:54,656 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:15:54,656 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:15:54,656 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:15:54,656 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:15:54,656 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:15:54,657 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:15:54,657 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:15:54,657 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:15:54,657 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:15:54,657 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:15:54,658 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:15:54,658 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:15:54,658 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:15:54,659 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:15:54,659 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:15:54,659 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:15:54,659 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:15:54,659 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:15:54,659 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:15:54,659 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:15:54,660 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:15:54,661 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:15:54,661 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:15:54,661 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:15:54,661 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:15:54,661 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:15:54,662 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:15:54,663 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:15:54,663 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:15:54,663 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:15:54,663 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:15:54,663 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:15:54,664 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:15:54,665 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:15:54,665 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:15:54,666 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:15:54,666 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:15:54,666 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:15:54,666 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:15:54,666 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:15:54,666 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:15:54,667 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:15:54,667 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:15:54,667 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 21:15:54,667 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:15:54,667 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:15:54,667 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:15:54,668 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:15:54,668 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:15:54,668 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:15:54,668 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:15:54,668 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:15:54,668 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:15:54,669 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:15:54,669 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:15:54,669 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:15:54,669 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:15:54,669 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:15:54,669 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:15:54,670 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:15:54,670 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:15:54,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-10-13 21:15:54,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-10-13 21:15:54,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:15:54,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:15:54,671 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:15:54,671 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:15:54,672 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:15:54,672 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:54,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:15:54,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:15:54,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:15:54,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:15:54,674 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:54,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:15:54,674 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:54,674 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:54,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:15:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:15:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:15:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:15:54,676 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:15:54,676 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:15:54,677 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:15:54,681 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:15:54,681 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:15:54,682 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:15:54,682 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:15:54,682 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:15:54,683 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:15:54,683 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:15:54,691 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:15:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:15:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:15:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:15:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:15:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:15:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:15:54,692 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:15:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:15:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:15:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:15:54,693 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:15:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:15:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:15:54,694 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:15:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:15:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:15:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:15:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:15:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:15:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:15:54,695 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:15:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:15:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:15:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:15:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:15:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:15:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:15:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:15:54,696 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:15:54,697 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:15:54,697 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:15:54,697 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:15:54,697 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:15:54,697 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:15:54,697 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:15:54,697 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:15:54,697 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:15:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:15:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:15:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:15:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:15:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:15:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:15:54,698 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:15:54,699 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:15:54,699 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:15:54,699 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:15:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:15:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:15:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:15:54,700 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:15:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:15:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:15:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:15:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:15:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:15:54,701 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:15:54,702 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:15:54,702 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:15:54,702 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:15:54,702 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:15:54,704 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:15:54,704 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:15:54,704 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:15:54,704 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:15:54,705 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:15:54,705 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:15:54,705 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:15:54,705 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:15:54,705 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:15:54,705 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:15:54,706 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:15:54,706 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:15:54,706 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:15:54,706 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:15:54,706 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:15:54,706 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:15:54,707 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:15:54,707 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:15:54,707 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:15:54,707 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:15:54,707 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:15:54,707 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:15:54,707 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:15:54,708 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:15:54,708 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:15:54,708 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:15:54,708 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:15:54,708 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:15:54,708 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:15:54,709 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-10-13 21:15:54,709 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:15:54,709 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 21:15:54,709 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:15:54,709 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:15:54,709 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:15:54,709 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-10-13 21:15:54,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:15:54,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:15:54,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:15:57,095 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:15:57,096 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:15:57,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:57 BoogieIcfgContainer [2019-10-13 21:15:57,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:15:57,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:15:57,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:15:57,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:15:57,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:15:53" (1/3) ... [2019-10-13 21:15:57,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18609f5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:57, skipping insertion in model container [2019-10-13 21:15:57,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:54" (2/3) ... [2019-10-13 21:15:57,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18609f5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:57, skipping insertion in model container [2019-10-13 21:15:57,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:57" (3/3) ... [2019-10-13 21:15:57,108 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product29.cil.c [2019-10-13 21:15:57,119 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:15:57,131 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:15:57,143 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:15:57,188 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:15:57,193 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:15:57,193 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:15:57,193 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:15:57,194 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:15:57,194 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:15:57,194 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:15:57,194 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:15:57,238 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states. [2019-10-13 21:15:57,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 21:15:57,283 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:57,285 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:57,293 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:57,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:57,303 INFO L82 PathProgramCache]: Analyzing trace with hash 940627505, now seen corresponding path program 1 times [2019-10-13 21:15:57,315 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:57,315 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014148050] [2019-10-13 21:15:57,316 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:57,316 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:57,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:58,061 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:58,062 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014148050] [2019-10-13 21:15:58,063 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:58,063 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:15:58,063 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481195192] [2019-10-13 21:15:58,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:15:58,071 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:58,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:15:58,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:58,090 INFO L87 Difference]: Start difference. First operand 614 states. Second operand 2 states. [2019-10-13 21:15:58,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:58,209 INFO L93 Difference]: Finished difference Result 869 states and 1190 transitions. [2019-10-13 21:15:58,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:15:58,212 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 204 [2019-10-13 21:15:58,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:58,260 INFO L225 Difference]: With dead ends: 869 [2019-10-13 21:15:58,260 INFO L226 Difference]: Without dead ends: 557 [2019-10-13 21:15:58,272 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 21:15:58,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2019-10-13 21:15:58,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2019-10-13 21:15:58,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 557 states. [2019-10-13 21:15:58,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 764 transitions. [2019-10-13 21:15:58,414 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 764 transitions. Word has length 204 [2019-10-13 21:15:58,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:58,419 INFO L462 AbstractCegarLoop]: Abstraction has 557 states and 764 transitions. [2019-10-13 21:15:58,419 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:15:58,419 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 764 transitions. [2019-10-13 21:15:58,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-13 21:15:58,428 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:58,429 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:58,429 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:58,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:58,431 INFO L82 PathProgramCache]: Analyzing trace with hash 861821971, now seen corresponding path program 1 times [2019-10-13 21:15:58,431 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:58,431 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738413931] [2019-10-13 21:15:58,431 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:58,432 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:58,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:58,864 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:58,864 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738413931] [2019-10-13 21:15:58,865 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:58,865 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:58,865 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539012043] [2019-10-13 21:15:58,867 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:58,868 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:58,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:58,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:58,869 INFO L87 Difference]: Start difference. First operand 557 states and 764 transitions. Second operand 3 states. [2019-10-13 21:15:58,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:58,935 INFO L93 Difference]: Finished difference Result 852 states and 1150 transitions. [2019-10-13 21:15:58,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:58,937 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2019-10-13 21:15:58,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:58,945 INFO L225 Difference]: With dead ends: 852 [2019-10-13 21:15:58,945 INFO L226 Difference]: Without dead ends: 560 [2019-10-13 21:15:58,948 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 21:15:58,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2019-10-13 21:15:58,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 559. [2019-10-13 21:15:58,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2019-10-13 21:15:58,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 766 transitions. [2019-10-13 21:15:58,987 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 766 transitions. Word has length 205 [2019-10-13 21:15:58,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:58,988 INFO L462 AbstractCegarLoop]: Abstraction has 559 states and 766 transitions. [2019-10-13 21:15:58,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:58,988 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 766 transitions. [2019-10-13 21:15:58,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-10-13 21:15:58,992 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:58,993 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:58,993 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:58,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:58,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1773355193, now seen corresponding path program 1 times [2019-10-13 21:15:58,994 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:58,994 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936604451] [2019-10-13 21:15:58,994 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:58,994 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:58,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:59,173 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:59,173 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936604451] [2019-10-13 21:15:59,173 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:59,174 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:59,174 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088204794] [2019-10-13 21:15:59,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:59,179 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:59,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:59,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:59,180 INFO L87 Difference]: Start difference. First operand 559 states and 766 transitions. Second operand 3 states. [2019-10-13 21:15:59,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:59,222 INFO L93 Difference]: Finished difference Result 1094 states and 1530 transitions. [2019-10-13 21:15:59,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:59,223 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 211 [2019-10-13 21:15:59,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:59,237 INFO L225 Difference]: With dead ends: 1094 [2019-10-13 21:15:59,238 INFO L226 Difference]: Without dead ends: 600 [2019-10-13 21:15:59,240 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 21:15:59,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2019-10-13 21:15:59,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 599. [2019-10-13 21:15:59,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2019-10-13 21:15:59,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 835 transitions. [2019-10-13 21:15:59,288 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 835 transitions. Word has length 211 [2019-10-13 21:15:59,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:59,289 INFO L462 AbstractCegarLoop]: Abstraction has 599 states and 835 transitions. [2019-10-13 21:15:59,289 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:59,289 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 835 transitions. [2019-10-13 21:15:59,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-10-13 21:15:59,294 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:59,294 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:59,295 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:59,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:59,295 INFO L82 PathProgramCache]: Analyzing trace with hash 478766471, now seen corresponding path program 1 times [2019-10-13 21:15:59,296 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:59,296 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595450479] [2019-10-13 21:15:59,296 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:59,296 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:59,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:59,804 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:59,805 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595450479] [2019-10-13 21:15:59,805 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414341874] [2019-10-13 21:15:59,805 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 21:16:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:00,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 2987 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:00,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:00,807 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:00,807 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:01,242 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:01,392 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:01,498 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:01,648 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:01,649 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:01,650 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-13 21:16:01,650 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621312797] [2019-10-13 21:16:01,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:16:01,651 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:01,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:16:01,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:16:01,652 INFO L87 Difference]: Start difference. First operand 599 states and 835 transitions. Second operand 9 states. [2019-10-13 21:16:04,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:04,151 INFO L93 Difference]: Finished difference Result 1176 states and 1650 transitions. [2019-10-13 21:16:04,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:16:04,151 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2019-10-13 21:16:04,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:04,156 INFO L225 Difference]: With dead ends: 1176 [2019-10-13 21:16:04,157 INFO L226 Difference]: Without dead ends: 613 [2019-10-13 21:16:04,159 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 411 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:16:04,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2019-10-13 21:16:04,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2019-10-13 21:16:04,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2019-10-13 21:16:04,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 853 transitions. [2019-10-13 21:16:04,190 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 853 transitions. Word has length 212 [2019-10-13 21:16:04,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:04,191 INFO L462 AbstractCegarLoop]: Abstraction has 613 states and 853 transitions. [2019-10-13 21:16:04,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:16:04,191 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 853 transitions. [2019-10-13 21:16:04,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-10-13 21:16:04,195 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:04,196 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:04,405 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:04,405 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:04,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:04,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1541922142, now seen corresponding path program 1 times [2019-10-13 21:16:04,407 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:04,407 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270644360] [2019-10-13 21:16:04,408 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:04,408 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:04,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:04,806 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:04,807 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270644360] [2019-10-13 21:16:04,808 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963674503] [2019-10-13 21:16:04,808 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 21:16:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:05,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 2988 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:05,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:05,626 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:05,626 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:05,948 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:06,014 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:06,063 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:06,063 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:06,063 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-13 21:16:06,063 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302472834] [2019-10-13 21:16:06,064 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:06,064 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:06,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:06,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:06,065 INFO L87 Difference]: Start difference. First operand 613 states and 853 transitions. Second operand 7 states. [2019-10-13 21:16:07,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:07,642 INFO L93 Difference]: Finished difference Result 1177 states and 1654 transitions. [2019-10-13 21:16:07,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:16:07,642 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2019-10-13 21:16:07,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:07,646 INFO L225 Difference]: With dead ends: 1177 [2019-10-13 21:16:07,646 INFO L226 Difference]: Without dead ends: 615 [2019-10-13 21:16:07,648 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 418 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:16:07,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-10-13 21:16:07,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2019-10-13 21:16:07,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-10-13 21:16:07,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 856 transitions. [2019-10-13 21:16:07,674 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 856 transitions. Word has length 213 [2019-10-13 21:16:07,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:07,675 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 856 transitions. [2019-10-13 21:16:07,675 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:07,675 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 856 transitions. [2019-10-13 21:16:07,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-13 21:16:07,679 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:07,679 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:07,887 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:07,887 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:07,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:07,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1444274426, now seen corresponding path program 1 times [2019-10-13 21:16:07,888 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:07,889 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134965267] [2019-10-13 21:16:07,889 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:07,889 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:07,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:08,264 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:08,265 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134965267] [2019-10-13 21:16:08,265 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347271510] [2019-10-13 21:16:08,265 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 21:16:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:08,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 2989 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:08,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:16:09,129 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:09,487 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:09,564 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:09,655 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:09,811 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:09,812 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-13 21:16:09,812 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702685854] [2019-10-13 21:16:09,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:16:09,813 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:09,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:16:09,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:16:09,814 INFO L87 Difference]: Start difference. First operand 615 states and 856 transitions. Second operand 16 states. [2019-10-13 21:16:11,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:11,867 INFO L93 Difference]: Finished difference Result 1181 states and 1654 transitions. [2019-10-13 21:16:11,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:11,870 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 214 [2019-10-13 21:16:11,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:11,874 INFO L225 Difference]: With dead ends: 1181 [2019-10-13 21:16:11,874 INFO L226 Difference]: Without dead ends: 627 [2019-10-13 21:16:11,877 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 415 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:16:11,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2019-10-13 21:16:11,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 625. [2019-10-13 21:16:11,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2019-10-13 21:16:11,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 867 transitions. [2019-10-13 21:16:11,905 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 867 transitions. Word has length 214 [2019-10-13 21:16:11,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:11,906 INFO L462 AbstractCegarLoop]: Abstraction has 625 states and 867 transitions. [2019-10-13 21:16:11,906 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:16:11,906 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 867 transitions. [2019-10-13 21:16:11,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-10-13 21:16:11,908 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:11,909 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:12,116 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:12,117 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:12,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:12,118 INFO L82 PathProgramCache]: Analyzing trace with hash -65849621, now seen corresponding path program 2 times [2019-10-13 21:16:12,118 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:12,118 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26254276] [2019-10-13 21:16:12,119 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:12,119 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:12,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:12,514 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:12,515 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26254276] [2019-10-13 21:16:12,515 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060788817] [2019-10-13 21:16:12,515 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 21:16:13,074 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:16:13,075 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:13,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 2349 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:16:13,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:13,362 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:13,817 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:13,817 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:13,817 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-13 21:16:13,818 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13781946] [2019-10-13 21:16:13,819 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:16:13,819 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:13,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:16:13,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:16:13,820 INFO L87 Difference]: Start difference. First operand 625 states and 867 transitions. Second operand 14 states. [2019-10-13 21:16:16,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:16,525 INFO L93 Difference]: Finished difference Result 2086 states and 2938 transitions. [2019-10-13 21:16:16,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:16:16,525 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 215 [2019-10-13 21:16:16,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:16,537 INFO L225 Difference]: With dead ends: 2086 [2019-10-13 21:16:16,537 INFO L226 Difference]: Without dead ends: 1807 [2019-10-13 21:16:16,540 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 426 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 21:16:16,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2019-10-13 21:16:16,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1479. [2019-10-13 21:16:16,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1479 states. [2019-10-13 21:16:16,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2118 transitions. [2019-10-13 21:16:16,636 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2118 transitions. Word has length 215 [2019-10-13 21:16:16,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:16,638 INFO L462 AbstractCegarLoop]: Abstraction has 1479 states and 2118 transitions. [2019-10-13 21:16:16,638 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:16:16,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2118 transitions. [2019-10-13 21:16:16,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-10-13 21:16:16,645 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:16,645 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:16,857 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:16,858 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:16,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:16,858 INFO L82 PathProgramCache]: Analyzing trace with hash -215833164, now seen corresponding path program 1 times [2019-10-13 21:16:16,858 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:16,858 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459565017] [2019-10-13 21:16:16,859 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:16,859 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:16,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:17,141 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:17,142 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459565017] [2019-10-13 21:16:17,142 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132379319] [2019-10-13 21:16:17,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:17,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 2991 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:17,787 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:18,006 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:16:18,007 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:18,413 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:18,518 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:18,636 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:18,912 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:18,913 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:18,913 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-13 21:16:18,913 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243408223] [2019-10-13 21:16:18,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:16:18,914 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:18,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:16:18,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:18,915 INFO L87 Difference]: Start difference. First operand 1479 states and 2118 transitions. Second operand 15 states. [2019-10-13 21:16:20,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:20,929 INFO L93 Difference]: Finished difference Result 2852 states and 4112 transitions. [2019-10-13 21:16:20,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:20,929 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 216 [2019-10-13 21:16:20,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:20,939 INFO L225 Difference]: With dead ends: 2852 [2019-10-13 21:16:20,939 INFO L226 Difference]: Without dead ends: 1485 [2019-10-13 21:16:20,945 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 419 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:16:20,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2019-10-13 21:16:21,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1479. [2019-10-13 21:16:21,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1479 states. [2019-10-13 21:16:21,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2116 transitions. [2019-10-13 21:16:21,013 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2116 transitions. Word has length 216 [2019-10-13 21:16:21,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:21,013 INFO L462 AbstractCegarLoop]: Abstraction has 1479 states and 2116 transitions. [2019-10-13 21:16:21,013 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:16:21,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2116 transitions. [2019-10-13 21:16:21,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-10-13 21:16:21,019 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:21,019 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] [2019-10-13 21:16:21,227 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:21,227 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:21,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:21,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1729834018, now seen corresponding path program 1 times [2019-10-13 21:16:21,228 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:21,229 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196459390] [2019-10-13 21:16:21,229 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:21,230 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:21,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:21,494 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:21,494 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196459390] [2019-10-13 21:16:21,494 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563395610] [2019-10-13 21:16:21,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:22,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:22,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:22,361 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:16:22,361 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:22,622 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:22,676 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:22,753 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:16:22,754 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:22,754 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-13 21:16:22,754 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002668414] [2019-10-13 21:16:22,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:16:22,756 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:22,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:16:22,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:16:22,757 INFO L87 Difference]: Start difference. First operand 1479 states and 2116 transitions. Second operand 12 states. [2019-10-13 21:16:24,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:24,068 INFO L93 Difference]: Finished difference Result 2313 states and 3272 transitions. [2019-10-13 21:16:24,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:16:24,069 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 217 [2019-10-13 21:16:24,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:24,076 INFO L225 Difference]: With dead ends: 2313 [2019-10-13 21:16:24,077 INFO L226 Difference]: Without dead ends: 1222 [2019-10-13 21:16:24,081 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 426 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:24,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2019-10-13 21:16:24,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1222. [2019-10-13 21:16:24,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1222 states. [2019-10-13 21:16:24,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1709 transitions. [2019-10-13 21:16:24,142 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1709 transitions. Word has length 217 [2019-10-13 21:16:24,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:24,144 INFO L462 AbstractCegarLoop]: Abstraction has 1222 states and 1709 transitions. [2019-10-13 21:16:24,144 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:16:24,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1709 transitions. [2019-10-13 21:16:24,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-10-13 21:16:24,150 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:24,151 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:24,361 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:24,361 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:24,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:24,362 INFO L82 PathProgramCache]: Analyzing trace with hash 357797082, now seen corresponding path program 2 times [2019-10-13 21:16:24,362 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:24,363 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725491800] [2019-10-13 21:16:24,363 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:24,363 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:24,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:24,660 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:16:24,660 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725491800] [2019-10-13 21:16:24,660 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127836124] [2019-10-13 21:16:24,661 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:25,292 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:16:25,292 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:25,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 2352 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:16:25,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:25,435 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:25,436 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:25,859 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:25,860 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:25,860 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [15] total 27 [2019-10-13 21:16:25,860 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71844454] [2019-10-13 21:16:25,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:16:25,861 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:25,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:16:25,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2019-10-13 21:16:25,862 INFO L87 Difference]: Start difference. First operand 1222 states and 1709 transitions. Second operand 14 states. [2019-10-13 21:16:27,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:27,988 INFO L93 Difference]: Finished difference Result 4129 states and 5859 transitions. [2019-10-13 21:16:27,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:16:27,989 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 218 [2019-10-13 21:16:27,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:28,006 INFO L225 Difference]: With dead ends: 4129 [2019-10-13 21:16:28,007 INFO L226 Difference]: Without dead ends: 3565 [2019-10-13 21:16:28,010 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 433 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=1534, Unknown=0, NotChecked=0, Total=1722 [2019-10-13 21:16:28,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3565 states.