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_spec8_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:18:30,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:18:30,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:18:30,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:18:30,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:18:30,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:18:30,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:18:30,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:18:30,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:18:30,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:18:30,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:18:30,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:18:30,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:18:30,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:18:30,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:18:30,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:18:30,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:18:30,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:18:30,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:18:30,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:18:30,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:18:30,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:18:30,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:18:30,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:18:30,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:18:30,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:18:30,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:18:30,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:18:30,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:18:30,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:18:30,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:18:30,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:18:30,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:18:30,988 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:18:30,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:18:30,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:18:30,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:18:30,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:18:30,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:18:30,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:18:30,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:18:30,992 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 21:18:31,006 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:18:31,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:18:31,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:18:31,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:18:31,008 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:18:31,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:18:31,008 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:18:31,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:18:31,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:18:31,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:18:31,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:18:31,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:18:31,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:18:31,010 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:18:31,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:18:31,010 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:18:31,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:18:31,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:18:31,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:18:31,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:18:31,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:18:31,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:18:31,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:18:31,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:18:31,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:18:31,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:18:31,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:18:31,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:18:31,012 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 21:18:31,290 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:18:31,307 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:18:31,311 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:18:31,312 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:18:31,312 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:18:31,313 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product33.cil.c [2019-10-13 21:18:31,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/065df48d0/70fd07e78be14b51ae86588d7c43eafc/FLAG03086328e [2019-10-13 21:18:31,924 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:18:31,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product33.cil.c [2019-10-13 21:18:31,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/065df48d0/70fd07e78be14b51ae86588d7c43eafc/FLAG03086328e [2019-10-13 21:18:32,213 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/065df48d0/70fd07e78be14b51ae86588d7c43eafc [2019-10-13 21:18:32,224 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:18:32,226 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:18:32,226 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:32,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:18:32,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:18:32,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:32" (1/1) ... [2019-10-13 21:18:32,232 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a30decc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:32, skipping insertion in model container [2019-10-13 21:18:32,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:18:32" (1/1) ... [2019-10-13 21:18:32,239 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:18:32,317 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:18:32,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:33,000 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:18:33,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:18:33,222 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:18:33,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:33 WrapperNode [2019-10-13 21:18:33,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:18:33,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:18:33,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:18:33,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:18:33,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:33" (1/1) ... [2019-10-13 21:18:33,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:33" (1/1) ... [2019-10-13 21:18:33,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:33" (1/1) ... [2019-10-13 21:18:33,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:33" (1/1) ... [2019-10-13 21:18:33,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:33" (1/1) ... [2019-10-13 21:18:33,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:33" (1/1) ... [2019-10-13 21:18:33,432 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:33" (1/1) ... [2019-10-13 21:18:33,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:18:33,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:18:33,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:18:33,446 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:18:33,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:33" (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 21:18:33,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:18:33,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:18:33,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:33,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:33,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:33,516 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:33,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:18:33,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:18:33,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:18:33,517 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:18:33,517 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:18:33,518 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:18:33,518 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:18:33,518 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:18:33,518 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:18:33,519 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:18:33,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:18:33,519 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:18:33,519 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:18:33,519 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:18:33,520 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:18:33,520 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:18:33,520 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:18:33,520 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:18:33,520 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:18:33,521 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:18:33,521 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:18:33,521 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:18:33,521 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:18:33,521 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:18:33,521 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:18:33,522 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:18:33,522 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:18:33,522 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:18:33,522 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:18:33,522 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:18:33,523 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:18:33,523 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:18:33,523 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:18:33,523 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:18:33,523 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:18:33,523 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-13 21:18:33,523 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:18:33,524 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:18:33,524 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:18:33,524 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:18:33,524 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:18:33,524 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:18:33,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-13 21:18:33,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-13 21:18:33,525 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:18:33,525 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:18:33,525 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:18:33,525 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:33,525 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:18:33,525 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:33,526 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:18:33,526 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:18:33,526 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:18:33,526 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:18:33,526 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:18:33,526 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:18:33,526 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:18:33,527 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:18:33,527 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:18:33,527 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:18:33,527 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:18:33,527 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:18:33,528 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:18:33,528 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:18:33,528 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:18:33,528 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:18:33,528 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:18:33,528 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:18:33,529 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:18:33,529 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:18:33,529 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:18:33,529 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:18:33,529 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:18:33,529 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:18:33,530 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:18:33,530 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:18:33,530 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:18:33,530 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:18:33,530 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:18:33,530 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:18:33,531 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:18:33,531 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:18:33,531 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:18:33,531 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:18:33,531 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:18:33,531 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:18:33,531 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:18:33,532 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:18:33,532 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:18:33,532 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:18:33,532 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:18:33,532 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:18:33,533 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:18:33,533 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:18:33,533 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:18:33,533 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:18:33,533 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:18:33,533 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:18:33,533 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:18:33,534 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:18:33,534 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:18:33,534 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:18:33,534 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:18:33,534 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:18:33,535 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:18:33,535 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:18:33,535 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:18:33,535 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:18:33,535 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:18:33,535 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:18:33,535 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:18:33,536 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:18:33,536 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:18:33,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:18:33,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:18:33,536 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:18:33,537 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:18:33,537 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:18:33,537 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:18:33,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:18:33,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:18:33,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:18:33,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:18:33,538 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:18:33,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:18:33,538 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:18:33,538 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:18:33,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:18:33,538 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:18:33,539 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:18:33,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:18:33,539 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:18:33,539 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:18:33,539 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:18:33,542 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:18:33,542 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:18:33,543 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:18:33,543 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:18:33,543 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:18:33,543 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:18:33,543 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:18:33,543 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:18:33,544 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:18:33,544 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:18:33,544 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:18:33,544 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:18:33,544 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:18:33,544 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:18:33,545 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:18:33,545 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:18:33,545 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:18:33,545 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:18:33,545 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:18:33,545 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:18:33,546 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:18:33,546 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:18:33,546 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:18:33,546 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:18:33,546 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:18:33,546 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:18:33,547 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:18:33,547 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:18:33,547 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:18:33,547 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:18:33,547 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:18:33,547 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:18:33,548 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:18:33,548 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:18:33,548 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:18:33,548 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:18:33,548 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:18:33,548 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:18:33,549 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:18:33,549 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:18:33,549 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:18:33,549 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:18:33,549 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:18:33,549 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:18:33,549 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:18:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-13 21:18:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:18:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:18:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:18:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-13 21:18:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-13 21:18:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:18:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:18:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:18:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:18:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:18:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:18:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:18:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:18:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:18:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:18:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:18:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:18:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:18:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:18:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:18:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:18:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:18:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:18:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:18:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:18:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:18:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:18:33,554 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:18:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:18:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:18:33,555 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:18:33,556 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:18:33,556 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:18:33,556 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:18:33,556 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:18:33,556 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:18:33,557 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:18:33,557 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:18:33,557 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:18:33,557 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:18:33,557 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:18:33,557 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:18:33,558 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:18:33,559 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:18:33,559 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:18:33,559 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:18:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:18:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:18:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:18:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:18:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:18:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:18:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:18:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:18:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:18:33,561 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:18:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:18:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:18:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:18:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:18:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:18:33,562 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:18:33,563 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:18:33,563 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:18:33,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:18:33,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:18:33,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:18:35,665 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:18:35,665 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:18:35,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:35 BoogieIcfgContainer [2019-10-13 21:18:35,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:18:35,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:18:35,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:18:35,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:18:35,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:18:32" (1/3) ... [2019-10-13 21:18:35,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16bc2622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:35, skipping insertion in model container [2019-10-13 21:18:35,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:18:33" (2/3) ... [2019-10-13 21:18:35,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16bc2622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:18:35, skipping insertion in model container [2019-10-13 21:18:35,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:18:35" (3/3) ... [2019-10-13 21:18:35,681 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product33.cil.c [2019-10-13 21:18:35,691 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:18:35,700 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:18:35,711 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:18:35,755 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:18:35,755 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:18:35,755 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:18:35,762 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:18:35,763 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:18:35,763 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:18:35,763 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:18:35,763 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:18:35,807 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states. [2019-10-13 21:18:35,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 21:18:35,840 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:35,841 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:35,845 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:35,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:35,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1670236662, now seen corresponding path program 1 times [2019-10-13 21:18:35,860 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:35,861 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024273456] [2019-10-13 21:18:35,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:35,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:35,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:36,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:36,579 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:36,580 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024273456] [2019-10-13 21:18:36,581 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:36,581 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:18:36,582 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34760398] [2019-10-13 21:18:36,588 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:18:36,590 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:36,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:18:36,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:18:36,607 INFO L87 Difference]: Start difference. First operand 594 states. Second operand 2 states. [2019-10-13 21:18:36,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:36,704 INFO L93 Difference]: Finished difference Result 919 states and 1204 transitions. [2019-10-13 21:18:36,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:18:36,708 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 158 [2019-10-13 21:18:36,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:36,749 INFO L225 Difference]: With dead ends: 919 [2019-10-13 21:18:36,749 INFO L226 Difference]: Without dead ends: 571 [2019-10-13 21:18:36,760 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 21:18:36,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2019-10-13 21:18:36,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2019-10-13 21:18:36,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2019-10-13 21:18:36,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 753 transitions. [2019-10-13 21:18:36,906 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 753 transitions. Word has length 158 [2019-10-13 21:18:36,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:36,908 INFO L462 AbstractCegarLoop]: Abstraction has 571 states and 753 transitions. [2019-10-13 21:18:36,908 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:18:36,908 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 753 transitions. [2019-10-13 21:18:36,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-13 21:18:36,912 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:36,913 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:36,913 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:36,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:36,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1950796631, now seen corresponding path program 1 times [2019-10-13 21:18:36,914 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:36,914 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569146004] [2019-10-13 21:18:36,914 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:36,914 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:36,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:37,084 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:37,084 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569146004] [2019-10-13 21:18:37,084 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:37,085 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:37,085 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956949938] [2019-10-13 21:18:37,087 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:37,087 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:37,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:37,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:37,088 INFO L87 Difference]: Start difference. First operand 571 states and 753 transitions. Second operand 3 states. [2019-10-13 21:18:37,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:37,213 INFO L93 Difference]: Finished difference Result 902 states and 1172 transitions. [2019-10-13 21:18:37,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:37,214 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-10-13 21:18:37,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:37,221 INFO L225 Difference]: With dead ends: 902 [2019-10-13 21:18:37,221 INFO L226 Difference]: Without dead ends: 574 [2019-10-13 21:18:37,224 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 21:18:37,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2019-10-13 21:18:37,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 573. [2019-10-13 21:18:37,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2019-10-13 21:18:37,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 755 transitions. [2019-10-13 21:18:37,263 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 755 transitions. Word has length 159 [2019-10-13 21:18:37,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:37,264 INFO L462 AbstractCegarLoop]: Abstraction has 573 states and 755 transitions. [2019-10-13 21:18:37,265 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:37,265 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 755 transitions. [2019-10-13 21:18:37,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 21:18:37,271 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:37,271 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:37,271 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:37,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:37,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1182028890, now seen corresponding path program 1 times [2019-10-13 21:18:37,272 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:37,272 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719016805] [2019-10-13 21:18:37,272 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:37,273 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:37,273 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:37,482 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:37,482 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719016805] [2019-10-13 21:18:37,483 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:37,483 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:37,483 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150049702] [2019-10-13 21:18:37,486 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:37,488 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:37,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:37,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:37,488 INFO L87 Difference]: Start difference. First operand 573 states and 755 transitions. Second operand 3 states. [2019-10-13 21:18:37,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:37,547 INFO L93 Difference]: Finished difference Result 1124 states and 1511 transitions. [2019-10-13 21:18:37,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:37,548 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-13 21:18:37,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:37,560 INFO L225 Difference]: With dead ends: 1124 [2019-10-13 21:18:37,560 INFO L226 Difference]: Without dead ends: 616 [2019-10-13 21:18:37,563 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 21:18:37,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-10-13 21:18:37,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 615. [2019-10-13 21:18:37,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-10-13 21:18:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 827 transitions. [2019-10-13 21:18:37,614 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 827 transitions. Word has length 171 [2019-10-13 21:18:37,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:37,622 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 827 transitions. [2019-10-13 21:18:37,622 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:37,623 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 827 transitions. [2019-10-13 21:18:37,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-13 21:18:37,631 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:37,632 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:37,632 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:37,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:37,633 INFO L82 PathProgramCache]: Analyzing trace with hash 903691461, now seen corresponding path program 1 times [2019-10-13 21:18:37,634 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:37,634 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972766685] [2019-10-13 21:18:37,634 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:37,634 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:37,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:37,893 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:37,893 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972766685] [2019-10-13 21:18:37,894 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:37,894 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:37,894 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894760310] [2019-10-13 21:18:37,895 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:37,896 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:37,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:37,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:37,897 INFO L87 Difference]: Start difference. First operand 615 states and 827 transitions. Second operand 3 states. [2019-10-13 21:18:37,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:37,943 INFO L93 Difference]: Finished difference Result 1247 states and 1722 transitions. [2019-10-13 21:18:37,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:37,944 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2019-10-13 21:18:37,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:37,950 INFO L225 Difference]: With dead ends: 1247 [2019-10-13 21:18:37,950 INFO L226 Difference]: Without dead ends: 697 [2019-10-13 21:18:37,952 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 21:18:37,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2019-10-13 21:18:37,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 696. [2019-10-13 21:18:37,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2019-10-13 21:18:37,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 965 transitions. [2019-10-13 21:18:37,987 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 965 transitions. Word has length 172 [2019-10-13 21:18:37,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:37,988 INFO L462 AbstractCegarLoop]: Abstraction has 696 states and 965 transitions. [2019-10-13 21:18:37,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:37,989 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 965 transitions. [2019-10-13 21:18:37,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-13 21:18:37,993 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:37,993 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:37,994 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:37,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:37,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1072559962, now seen corresponding path program 1 times [2019-10-13 21:18:37,994 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:37,995 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681121843] [2019-10-13 21:18:37,995 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:37,996 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:37,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:38,203 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:18:38,204 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681121843] [2019-10-13 21:18:38,204 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:38,204 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:38,205 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587702343] [2019-10-13 21:18:38,205 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:38,205 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:38,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:38,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:38,206 INFO L87 Difference]: Start difference. First operand 696 states and 965 transitions. Second operand 3 states. [2019-10-13 21:18:38,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:38,251 INFO L93 Difference]: Finished difference Result 1484 states and 2126 transitions. [2019-10-13 21:18:38,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:38,252 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2019-10-13 21:18:38,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:38,257 INFO L225 Difference]: With dead ends: 1484 [2019-10-13 21:18:38,257 INFO L226 Difference]: Without dead ends: 853 [2019-10-13 21:18:38,260 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 21:18:38,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2019-10-13 21:18:38,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 852. [2019-10-13 21:18:38,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2019-10-13 21:18:38,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1229 transitions. [2019-10-13 21:18:38,297 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1229 transitions. Word has length 173 [2019-10-13 21:18:38,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:38,297 INFO L462 AbstractCegarLoop]: Abstraction has 852 states and 1229 transitions. [2019-10-13 21:18:38,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:38,298 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1229 transitions. [2019-10-13 21:18:38,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-13 21:18:38,301 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:38,302 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:38,302 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:38,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:38,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1649882840, now seen corresponding path program 1 times [2019-10-13 21:18:38,303 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:38,303 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049026164] [2019-10-13 21:18:38,303 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:38,303 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:38,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:38,473 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:18:38,474 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049026164] [2019-10-13 21:18:38,474 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:18:38,474 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:18:38,474 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992807706] [2019-10-13 21:18:38,475 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:18:38,475 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:38,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:18:38,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:38,476 INFO L87 Difference]: Start difference. First operand 852 states and 1229 transitions. Second operand 3 states. [2019-10-13 21:18:38,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:38,522 INFO L93 Difference]: Finished difference Result 1271 states and 1777 transitions. [2019-10-13 21:18:38,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:18:38,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-10-13 21:18:38,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:38,530 INFO L225 Difference]: With dead ends: 1271 [2019-10-13 21:18:38,531 INFO L226 Difference]: Without dead ends: 945 [2019-10-13 21:18:38,533 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:18:38,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2019-10-13 21:18:38,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 945. [2019-10-13 21:18:38,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 945 states. [2019-10-13 21:18:38,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1352 transitions. [2019-10-13 21:18:38,680 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1352 transitions. Word has length 175 [2019-10-13 21:18:38,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:38,681 INFO L462 AbstractCegarLoop]: Abstraction has 945 states and 1352 transitions. [2019-10-13 21:18:38,681 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:18:38,681 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1352 transitions. [2019-10-13 21:18:38,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2019-10-13 21:18:38,694 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:38,694 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:38,694 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:38,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:38,695 INFO L82 PathProgramCache]: Analyzing trace with hash -701347322, now seen corresponding path program 1 times [2019-10-13 21:18:38,695 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:38,695 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457331152] [2019-10-13 21:18:38,696 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:38,696 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:38,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:39,290 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-13 21:18:39,291 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457331152] [2019-10-13 21:18:39,291 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141664858] [2019-10-13 21:18:39,291 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 21:18:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:40,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 3614 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:40,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:40,589 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-13 21:18:40,589 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:41,322 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:18:41,414 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:41,511 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:41,717 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-13 21:18:41,718 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:18:41,719 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-13 21:18:41,719 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831968766] [2019-10-13 21:18:41,720 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:18:41,721 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:41,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:18:41,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:18:41,722 INFO L87 Difference]: Start difference. First operand 945 states and 1352 transitions. Second operand 9 states. [2019-10-13 21:18:44,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:44,254 INFO L93 Difference]: Finished difference Result 1868 states and 2684 transitions. [2019-10-13 21:18:44,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:18:44,255 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 329 [2019-10-13 21:18:44,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:44,260 INFO L225 Difference]: With dead ends: 1868 [2019-10-13 21:18:44,260 INFO L226 Difference]: Without dead ends: 959 [2019-10-13 21:18:44,263 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 647 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:18:44,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2019-10-13 21:18:44,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2019-10-13 21:18:44,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2019-10-13 21:18:44,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1370 transitions. [2019-10-13 21:18:44,307 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1370 transitions. Word has length 329 [2019-10-13 21:18:44,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:44,307 INFO L462 AbstractCegarLoop]: Abstraction has 959 states and 1370 transitions. [2019-10-13 21:18:44,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:18:44,307 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1370 transitions. [2019-10-13 21:18:44,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2019-10-13 21:18:44,315 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:44,316 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:44,529 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:44,530 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:44,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:44,531 INFO L82 PathProgramCache]: Analyzing trace with hash 650552446, now seen corresponding path program 1 times [2019-10-13 21:18:44,531 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:44,531 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413020850] [2019-10-13 21:18:44,531 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:44,531 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:44,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:44,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:45,228 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-13 21:18:45,228 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413020850] [2019-10-13 21:18:45,229 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129960494] [2019-10-13 21:18:45,229 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 21:18:46,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:46,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 3615 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:18:46,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:46,282 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-13 21:18:46,282 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:46,865 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:46,935 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:47,051 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-13 21:18:47,052 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:18:47,052 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-13 21:18:47,053 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165633447] [2019-10-13 21:18:47,053 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:18:47,054 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:47,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:18:47,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:18:47,055 INFO L87 Difference]: Start difference. First operand 959 states and 1370 transitions. Second operand 7 states. [2019-10-13 21:18:48,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:48,197 INFO L93 Difference]: Finished difference Result 1869 states and 2690 transitions. [2019-10-13 21:18:48,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:18:48,198 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 330 [2019-10-13 21:18:48,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:48,203 INFO L225 Difference]: With dead ends: 1869 [2019-10-13 21:18:48,204 INFO L226 Difference]: Without dead ends: 961 [2019-10-13 21:18:48,207 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 654 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:18:48,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2019-10-13 21:18:48,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 961. [2019-10-13 21:18:48,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2019-10-13 21:18:48,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1373 transitions. [2019-10-13 21:18:48,249 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1373 transitions. Word has length 330 [2019-10-13 21:18:48,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:48,250 INFO L462 AbstractCegarLoop]: Abstraction has 961 states and 1373 transitions. [2019-10-13 21:18:48,250 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:18:48,250 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1373 transitions. [2019-10-13 21:18:48,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2019-10-13 21:18:48,258 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:48,258 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:48,466 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:48,466 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:48,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:48,467 INFO L82 PathProgramCache]: Analyzing trace with hash -2102142516, now seen corresponding path program 1 times [2019-10-13 21:18:48,468 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:48,468 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045816751] [2019-10-13 21:18:48,468 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:48,468 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:48,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:48,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:49,157 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-13 21:18:49,158 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045816751] [2019-10-13 21:18:49,158 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989522664] [2019-10-13 21:18:49,159 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 21:18:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:50,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 3616 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:50,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:50,549 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:18:50,549 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:51,157 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:18:51,250 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:51,381 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:51,532 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-13 21:18:51,532 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:18:51,532 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-13 21:18:51,532 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926894508] [2019-10-13 21:18:51,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:18:51,534 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:51,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:18:51,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-13 21:18:51,535 INFO L87 Difference]: Start difference. First operand 961 states and 1373 transitions. Second operand 16 states. [2019-10-13 21:18:53,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:53,810 INFO L93 Difference]: Finished difference Result 1873 states and 2688 transitions. [2019-10-13 21:18:53,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:18:53,811 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 331 [2019-10-13 21:18:53,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:53,821 INFO L225 Difference]: With dead ends: 1873 [2019-10-13 21:18:53,821 INFO L226 Difference]: Without dead ends: 973 [2019-10-13 21:18:53,830 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 651 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-13 21:18:53,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2019-10-13 21:18:53,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 971. [2019-10-13 21:18:53,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2019-10-13 21:18:53,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1384 transitions. [2019-10-13 21:18:53,870 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1384 transitions. Word has length 331 [2019-10-13 21:18:53,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:53,872 INFO L462 AbstractCegarLoop]: Abstraction has 971 states and 1384 transitions. [2019-10-13 21:18:53,872 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:18:53,872 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1384 transitions. [2019-10-13 21:18:53,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2019-10-13 21:18:53,879 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:53,880 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:54,088 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:54,089 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:54,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:54,090 INFO L82 PathProgramCache]: Analyzing trace with hash -20213600, now seen corresponding path program 2 times [2019-10-13 21:18:54,090 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:54,091 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813733615] [2019-10-13 21:18:54,091 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:54,091 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:54,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:54,604 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-10-13 21:18:54,605 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813733615] [2019-10-13 21:18:54,605 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662156122] [2019-10-13 21:18:54,605 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 21:18:55,343 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-13 21:18:55,343 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:18:55,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 2519 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:18:55,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:18:55,555 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:18:55,556 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:18:56,180 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:56,273 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:18:56,365 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-13 21:18:56,366 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:18:56,366 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-13 21:18:56,366 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087524786] [2019-10-13 21:18:56,367 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:18:56,367 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:18:56,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:18:56,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:18:56,368 INFO L87 Difference]: Start difference. First operand 971 states and 1384 transitions. Second operand 12 states. [2019-10-13 21:18:58,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:18:58,205 INFO L93 Difference]: Finished difference Result 1864 states and 2676 transitions. [2019-10-13 21:18:58,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:18:58,206 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 332 [2019-10-13 21:18:58,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:18:58,213 INFO L225 Difference]: With dead ends: 1864 [2019-10-13 21:18:58,214 INFO L226 Difference]: Without dead ends: 973 [2019-10-13 21:18:58,218 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 658 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:18:58,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2019-10-13 21:18:58,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 971. [2019-10-13 21:18:58,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2019-10-13 21:18:58,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1383 transitions. [2019-10-13 21:18:58,258 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1383 transitions. Word has length 332 [2019-10-13 21:18:58,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:18:58,259 INFO L462 AbstractCegarLoop]: Abstraction has 971 states and 1383 transitions. [2019-10-13 21:18:58,259 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:18:58,259 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1383 transitions. [2019-10-13 21:18:58,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2019-10-13 21:18:58,268 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:18:58,268 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:18:58,482 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:58,483 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:18:58,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:18:58,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1496141744, now seen corresponding path program 3 times [2019-10-13 21:18:58,483 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:18:58,483 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277565187] [2019-10-13 21:18:58,483 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:58,483 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:18:58,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:18:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:18:59,019 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-13 21:18:59,019 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277565187] [2019-10-13 21:18:59,020 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243671370] [2019-10-13 21:18:59,020 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:18:59,792 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-13 21:18:59,793 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:18:59,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 2936 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:18:59,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:00,033 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:19:00,034 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:00,667 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:19:00,759 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:00,861 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:01,009 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-13 21:19:01,009 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:01,010 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-10-13 21:19:01,010 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052475181] [2019-10-13 21:19:01,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:19:01,011 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:01,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:19:01,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:19:01,012 INFO L87 Difference]: Start difference. First operand 971 states and 1383 transitions. Second operand 15 states. [2019-10-13 21:19:02,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:19:02,950 INFO L93 Difference]: Finished difference Result 1871 states and 2683 transitions. [2019-10-13 21:19:02,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:19:02,951 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 333 [2019-10-13 21:19:02,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:19:02,961 INFO L225 Difference]: With dead ends: 1871 [2019-10-13 21:19:02,961 INFO L226 Difference]: Without dead ends: 975 [2019-10-13 21:19:02,965 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 696 GetRequests, 655 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-10-13 21:19:02,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2019-10-13 21:19:02,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 971. [2019-10-13 21:19:02,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2019-10-13 21:19:02,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1382 transitions. [2019-10-13 21:19:02,996 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1382 transitions. Word has length 333 [2019-10-13 21:19:02,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:19:02,997 INFO L462 AbstractCegarLoop]: Abstraction has 971 states and 1382 transitions. [2019-10-13 21:19:02,997 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:19:02,997 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1382 transitions. [2019-10-13 21:19:03,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2019-10-13 21:19:03,001 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:19:03,002 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:19:03,212 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:19:03,213 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:19:03,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:19:03,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1269627389, now seen corresponding path program 1 times [2019-10-13 21:19:03,213 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:19:03,213 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559226909] [2019-10-13 21:19:03,214 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:03,214 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:19:03,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:19:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-13 21:19:03,590 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559226909] [2019-10-13 21:19:03,591 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925764113] [2019-10-13 21:19:03,591 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 21:19:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:19:04,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 3616 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:19:04,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:19:04,702 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-13 21:19:04,702 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:19:05,233 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:05,291 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:19:05,378 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-13 21:19:05,378 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:19:05,379 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 31 [2019-10-13 21:19:05,379 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824191150] [2019-10-13 21:19:05,380 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 21:19:05,380 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:19:05,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 21:19:05,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:19:05,381 INFO L87 Difference]: Start difference. First operand 971 states and 1382 transitions. Second operand 11 states.