/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec9_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:57:29,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:57:29,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:57:29,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:57:29,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:57:29,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:57:29,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:57:29,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:57:29,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:57:29,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:57:29,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:57:29,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:57:29,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:57:29,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:57:29,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:57:29,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:57:29,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:57:29,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:57:29,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:57:29,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:57:29,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:57:29,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:57:29,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:57:29,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:57:29,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:57:29,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:57:29,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:57:29,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:57:29,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:57:29,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:57:29,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:57:29,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:57:29,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:57:29,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:57:29,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:57:29,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:57:29,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:57:29,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:57:29,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:57:29,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:57:29,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:57:29,317 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 [2019-11-07 00:57:29,330 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:57:29,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:57:29,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:57:29,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:57:29,332 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:57:29,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:57:29,332 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:57:29,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:57:29,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:57:29,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:57:29,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:57:29,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:57:29,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:57:29,334 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:57:29,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:57:29,334 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:57:29,335 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:57:29,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:57:29,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:57:29,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:57:29,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:57:29,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:57:29,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:57:29,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:57:29,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:57:29,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:57:29,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:57:29,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:57:29,337 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 [2019-11-07 00:57:29,667 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:57:29,686 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:57:29,690 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:57:29,691 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:57:29,691 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:57:29,692 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product35.cil.c [2019-11-07 00:57:29,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1506e6ee/f3de00de7e3349bfabf400f9244c2ed6/FLAGe620dbdf8 [2019-11-07 00:57:30,438 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:57:30,439 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product35.cil.c [2019-11-07 00:57:30,471 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1506e6ee/f3de00de7e3349bfabf400f9244c2ed6/FLAGe620dbdf8 [2019-11-07 00:57:30,569 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1506e6ee/f3de00de7e3349bfabf400f9244c2ed6 [2019-11-07 00:57:30,577 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:57:30,578 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:57:30,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:57:30,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:57:30,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:57:30,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:57:30" (1/1) ... [2019-11-07 00:57:30,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@175e7e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:30, skipping insertion in model container [2019-11-07 00:57:30,589 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:57:30" (1/1) ... [2019-11-07 00:57:30,595 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:57:30,662 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:57:31,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:57:31,414 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:57:31,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:57:31,696 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:57:31,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:31 WrapperNode [2019-11-07 00:57:31,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:57:31,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:57:31,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:57:31,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:57:31,714 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:31" (1/1) ... [2019-11-07 00:57:31,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:31" (1/1) ... [2019-11-07 00:57:31,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:31" (1/1) ... [2019-11-07 00:57:31,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:31" (1/1) ... [2019-11-07 00:57:31,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:31" (1/1) ... [2019-11-07 00:57:31,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:31" (1/1) ... [2019-11-07 00:57:31,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:31" (1/1) ... [2019-11-07 00:57:31,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:57:31,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:57:31,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:57:31,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:57:31,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:31" (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 [2019-11-07 00:57:31,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:57:31,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:57:31,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:57:31,984 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:57:31,984 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:57:31,984 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:57:31,984 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:57:31,985 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:57:31,985 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:57:31,985 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:57:31,985 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:57:31,985 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:57:31,986 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:57:31,986 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:57:31,986 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:57:31,986 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:57:31,986 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:57:31,987 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:57:31,987 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:57:31,987 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:57:31,987 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:57:31,989 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:57:31,989 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:57:31,989 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:57:31,990 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:57:31,990 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:57:31,990 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:57:31,990 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:57:31,990 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:57:31,991 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:57:31,991 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:57:31,991 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:57:31,991 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:57:31,991 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:57:31,991 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:57:31,992 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:57:31,992 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:57:31,992 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:57:31,992 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:57:31,993 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:57:31,993 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:57:31,993 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:57:31,993 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:57:31,993 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:57:31,993 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:57:31,993 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:57:31,994 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:57:31,994 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:57:31,994 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:57:31,994 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:57:31,994 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:57:31,994 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:57:31,995 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:57:31,995 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:57:31,995 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:57:31,995 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:57:31,995 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:57:31,995 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:57:31,995 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:57:31,996 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-11-07 00:57:31,996 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-11-07 00:57:31,996 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:57:31,996 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:57:31,997 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:57:31,997 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:57:31,997 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:57:31,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-11-07 00:57:31,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-11-07 00:57:31,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:57:31,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:57:31,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:57:31,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:57:31,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:57:31,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:57:31,999 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:57:31,999 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:57:32,000 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:57:32,000 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:57:32,000 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:57:32,001 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-11-07 00:57:32,001 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:57:32,001 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:57:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:57:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:57:32,002 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:57:32,003 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:57:32,003 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:57:32,004 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:57:32,004 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:57:32,005 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:57:32,005 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:57:32,005 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:57:32,005 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:57:32,005 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:57:32,005 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:57:32,006 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:57:32,006 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:57:32,006 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:57:32,006 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:57:32,006 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:57:32,006 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:57:32,006 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:57:32,007 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:57:32,007 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:57:32,007 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:57:32,007 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:57:32,007 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:57:32,007 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:57:32,007 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:57:32,008 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:57:32,008 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:57:32,008 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:57:32,008 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:57:32,008 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:57:32,008 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:57:32,008 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:57:32,009 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:57:32,009 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:57:32,009 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:57:32,010 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:57:32,010 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:57:32,010 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:57:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:57:32,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:57:32,012 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:57:32,012 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:57:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:57:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:57:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:57:32,013 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:57:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:57:32,014 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:57:32,015 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:57:32,015 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:57:32,015 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:57:32,016 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:57:32,016 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:57:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:57:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:57:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:57:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:57:32,021 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:57:32,022 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:57:32,022 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:57:32,030 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:57:32,030 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:57:32,030 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:57:32,032 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:57:32,032 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:57:32,032 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:57:32,032 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:57:32,032 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:57:32,032 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:57:32,033 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:57:32,033 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:57:32,033 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:57:32,033 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:57:32,033 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:57:32,033 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:57:32,034 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:57:32,034 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:57:32,034 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:57:32,034 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:57:32,034 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:57:32,034 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:57:32,035 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:57:32,035 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:57:32,035 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:57:32,035 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:57:32,035 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:57:32,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:57:32,036 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:57:32,036 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:57:32,036 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:57:32,036 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:57:32,036 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:57:32,037 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:57:32,037 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:57:32,037 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:57:32,037 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:57:32,037 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:57:32,037 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:57:32,038 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:57:32,038 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:57:32,038 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:57:32,038 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:57:32,038 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:57:32,038 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:57:32,039 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:57:32,039 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:57:32,039 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:57:32,039 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:57:32,039 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:57:32,039 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:57:32,040 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:57:32,040 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:57:32,040 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:57:32,040 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:57:32,040 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:57:32,040 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:57:32,041 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:57:32,041 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:57:32,041 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:57:32,041 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:57:32,041 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-11-07 00:57:32,041 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-11-07 00:57:32,042 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:57:32,042 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:57:32,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-11-07 00:57:32,044 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-11-07 00:57:32,044 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:57:32,044 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:57:32,045 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:57:32,045 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:57:32,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:57:32,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:57:32,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:57:32,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:57:32,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:57:32,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:57:32,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:57:32,046 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:57:32,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:57:32,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:57:32,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:57:32,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:57:32,047 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:57:32,047 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:57:32,047 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:57:32,047 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:57:32,048 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:57:32,048 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:57:32,048 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:57:32,048 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:57:32,048 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:57:32,048 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:57:32,049 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:57:32,049 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:57:32,049 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:57:32,049 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:57:32,049 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:57:32,049 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:57:32,050 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:57:32,050 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:57:32,050 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-11-07 00:57:32,050 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:57:32,050 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:57:32,050 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:57:32,051 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:57:32,051 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:57:32,051 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:57:32,051 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:57:32,051 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:57:32,051 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:57:32,052 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:57:32,052 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:57:32,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:57:32,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:57:32,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:57:34,377 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:57:34,377 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:57:34,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:57:34 BoogieIcfgContainer [2019-11-07 00:57:34,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:57:34,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:57:34,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:57:34,387 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:57:34,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:57:30" (1/3) ... [2019-11-07 00:57:34,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1007abe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:57:34, skipping insertion in model container [2019-11-07 00:57:34,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:31" (2/3) ... [2019-11-07 00:57:34,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1007abe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:57:34, skipping insertion in model container [2019-11-07 00:57:34,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:57:34" (3/3) ... [2019-11-07 00:57:34,391 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product35.cil.c [2019-11-07 00:57:34,403 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:57:34,412 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:57:34,423 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:57:34,455 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:57:34,455 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:57:34,455 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:57:34,455 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:57:34,455 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:57:34,455 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:57:34,456 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:57:34,456 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:57:34,489 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states. [2019-11-07 00:57:34,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-11-07 00:57:34,514 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:34,515 INFO L410 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] [2019-11-07 00:57:34,517 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:34,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:34,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1796376026, now seen corresponding path program 1 times [2019-11-07 00:57:34,534 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:34,535 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874867474] [2019-11-07 00:57:34,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:35,255 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:57:35,255 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874867474] [2019-11-07 00:57:35,256 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:57:35,257 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:57:35,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441537019] [2019-11-07 00:57:35,266 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:57:35,268 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:35,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:57:35,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:57:35,286 INFO L87 Difference]: Start difference. First operand 687 states. Second operand 2 states. [2019-11-07 00:57:35,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:35,393 INFO L93 Difference]: Finished difference Result 1049 states and 1409 transitions. [2019-11-07 00:57:35,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:57:35,395 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 167 [2019-11-07 00:57:35,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:35,428 INFO L225 Difference]: With dead ends: 1049 [2019-11-07 00:57:35,428 INFO L226 Difference]: Without dead ends: 658 [2019-11-07 00:57:35,442 INFO L630 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 [2019-11-07 00:57:35,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2019-11-07 00:57:35,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2019-11-07 00:57:35,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2019-11-07 00:57:35,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 890 transitions. [2019-11-07 00:57:35,557 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 890 transitions. Word has length 167 [2019-11-07 00:57:35,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:35,559 INFO L462 AbstractCegarLoop]: Abstraction has 658 states and 890 transitions. [2019-11-07 00:57:35,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:57:35,559 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 890 transitions. [2019-11-07 00:57:35,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-11-07 00:57:35,567 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:35,567 INFO L410 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] [2019-11-07 00:57:35,568 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:35,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:35,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1669127173, now seen corresponding path program 1 times [2019-11-07 00:57:35,568 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:35,569 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899003207] [2019-11-07 00:57:35,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:35,901 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:57:35,901 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899003207] [2019-11-07 00:57:35,901 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:57:35,901 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:57:35,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960558983] [2019-11-07 00:57:35,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:57:35,915 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:35,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:57:35,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:57:35,916 INFO L87 Difference]: Start difference. First operand 658 states and 890 transitions. Second operand 3 states. [2019-11-07 00:57:36,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:36,010 INFO L93 Difference]: Finished difference Result 1032 states and 1374 transitions. [2019-11-07 00:57:36,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:57:36,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-11-07 00:57:36,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:36,022 INFO L225 Difference]: With dead ends: 1032 [2019-11-07 00:57:36,023 INFO L226 Difference]: Without dead ends: 661 [2019-11-07 00:57:36,028 INFO L630 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 [2019-11-07 00:57:36,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2019-11-07 00:57:36,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 660. [2019-11-07 00:57:36,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2019-11-07 00:57:36,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 892 transitions. [2019-11-07 00:57:36,078 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 892 transitions. Word has length 168 [2019-11-07 00:57:36,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:36,078 INFO L462 AbstractCegarLoop]: Abstraction has 660 states and 892 transitions. [2019-11-07 00:57:36,078 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:57:36,078 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 892 transitions. [2019-11-07 00:57:36,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-11-07 00:57:36,082 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:36,083 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:57:36,083 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:36,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:36,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1780408052, now seen corresponding path program 1 times [2019-11-07 00:57:36,084 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:36,084 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26627100] [2019-11-07 00:57:36,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:36,253 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:57:36,254 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26627100] [2019-11-07 00:57:36,254 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:57:36,254 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:57:36,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575368897] [2019-11-07 00:57:36,255 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:57:36,255 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:36,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:57:36,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:57:36,256 INFO L87 Difference]: Start difference. First operand 660 states and 892 transitions. Second operand 3 states. [2019-11-07 00:57:36,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:36,300 INFO L93 Difference]: Finished difference Result 1300 states and 1788 transitions. [2019-11-07 00:57:36,300 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:57:36,300 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2019-11-07 00:57:36,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:36,306 INFO L225 Difference]: With dead ends: 1300 [2019-11-07 00:57:36,306 INFO L226 Difference]: Without dead ends: 705 [2019-11-07 00:57:36,308 INFO L630 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 [2019-11-07 00:57:36,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2019-11-07 00:57:36,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 704. [2019-11-07 00:57:36,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 704 states. [2019-11-07 00:57:36,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 967 transitions. [2019-11-07 00:57:36,342 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 967 transitions. Word has length 180 [2019-11-07 00:57:36,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:36,343 INFO L462 AbstractCegarLoop]: Abstraction has 704 states and 967 transitions. [2019-11-07 00:57:36,343 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:57:36,344 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 967 transitions. [2019-11-07 00:57:36,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-11-07 00:57:36,348 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:36,349 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:57:36,349 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:36,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:36,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1102871673, now seen corresponding path program 1 times [2019-11-07 00:57:36,350 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:36,350 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610149171] [2019-11-07 00:57:36,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:36,565 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:57:36,566 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610149171] [2019-11-07 00:57:36,566 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:57:36,566 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:57:36,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608013302] [2019-11-07 00:57:36,567 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:57:36,567 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:36,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:57:36,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:57:36,570 INFO L87 Difference]: Start difference. First operand 704 states and 967 transitions. Second operand 3 states. [2019-11-07 00:57:36,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:36,615 INFO L93 Difference]: Finished difference Result 1429 states and 2008 transitions. [2019-11-07 00:57:36,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:57:36,615 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2019-11-07 00:57:36,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:36,621 INFO L225 Difference]: With dead ends: 1429 [2019-11-07 00:57:36,621 INFO L226 Difference]: Without dead ends: 790 [2019-11-07 00:57:36,623 INFO L630 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 [2019-11-07 00:57:36,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2019-11-07 00:57:36,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 789. [2019-11-07 00:57:36,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2019-11-07 00:57:36,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 1111 transitions. [2019-11-07 00:57:36,656 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 1111 transitions. Word has length 181 [2019-11-07 00:57:36,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:36,657 INFO L462 AbstractCegarLoop]: Abstraction has 789 states and 1111 transitions. [2019-11-07 00:57:36,657 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:57:36,657 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 1111 transitions. [2019-11-07 00:57:36,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-11-07 00:57:36,661 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:36,661 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:57:36,662 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:36,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:36,662 INFO L82 PathProgramCache]: Analyzing trace with hash -441168396, now seen corresponding path program 1 times [2019-11-07 00:57:36,662 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:36,663 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027474804] [2019-11-07 00:57:36,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:36,824 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:57:36,824 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027474804] [2019-11-07 00:57:36,824 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:57:36,825 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:57:36,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239948283] [2019-11-07 00:57:36,825 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:57:36,826 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:36,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:57:36,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:57:36,826 INFO L87 Difference]: Start difference. First operand 789 states and 1111 transitions. Second operand 3 states. [2019-11-07 00:57:36,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:36,872 INFO L93 Difference]: Finished difference Result 1678 states and 2430 transitions. [2019-11-07 00:57:36,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:57:36,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2019-11-07 00:57:36,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:36,879 INFO L225 Difference]: With dead ends: 1678 [2019-11-07 00:57:36,879 INFO L226 Difference]: Without dead ends: 954 [2019-11-07 00:57:36,882 INFO L630 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 [2019-11-07 00:57:36,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2019-11-07 00:57:36,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 953. [2019-11-07 00:57:36,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2019-11-07 00:57:36,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1387 transitions. [2019-11-07 00:57:36,922 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1387 transitions. Word has length 182 [2019-11-07 00:57:36,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:36,922 INFO L462 AbstractCegarLoop]: Abstraction has 953 states and 1387 transitions. [2019-11-07 00:57:36,922 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:57:36,923 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1387 transitions. [2019-11-07 00:57:36,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-11-07 00:57:36,928 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:36,928 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:57:36,928 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:36,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:36,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1717289379, now seen corresponding path program 1 times [2019-11-07 00:57:36,929 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:36,929 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670701798] [2019-11-07 00:57:36,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:37,227 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:57:37,227 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670701798] [2019-11-07 00:57:37,229 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:57:37,229 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:57:37,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616964142] [2019-11-07 00:57:37,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:57:37,230 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:37,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:57:37,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:57:37,231 INFO L87 Difference]: Start difference. First operand 953 states and 1387 transitions. Second operand 3 states. [2019-11-07 00:57:37,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:37,297 INFO L93 Difference]: Finished difference Result 1452 states and 2059 transitions. [2019-11-07 00:57:37,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:57:37,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2019-11-07 00:57:37,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:37,306 INFO L225 Difference]: With dead ends: 1452 [2019-11-07 00:57:37,306 INFO L226 Difference]: Without dead ends: 1094 [2019-11-07 00:57:37,308 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:57:37,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2019-11-07 00:57:37,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1093. [2019-11-07 00:57:37,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1093 states. [2019-11-07 00:57:37,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1584 transitions. [2019-11-07 00:57:37,373 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1584 transitions. Word has length 184 [2019-11-07 00:57:37,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:37,376 INFO L462 AbstractCegarLoop]: Abstraction has 1093 states and 1584 transitions. [2019-11-07 00:57:37,376 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:57:37,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1584 transitions. [2019-11-07 00:57:37,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2019-11-07 00:57:37,389 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:37,389 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:57:37,389 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:37,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:37,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1766872220, now seen corresponding path program 1 times [2019-11-07 00:57:37,390 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:37,390 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973777949] [2019-11-07 00:57:37,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:37,817 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-11-07 00:57:37,817 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973777949] [2019-11-07 00:57:37,818 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:57:37,818 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:57:37,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193298161] [2019-11-07 00:57:37,819 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:57:37,819 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:37,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:57:37,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:57:37,820 INFO L87 Difference]: Start difference. First operand 1093 states and 1584 transitions. Second operand 6 states. [2019-11-07 00:57:38,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:38,796 INFO L93 Difference]: Finished difference Result 2597 states and 3733 transitions. [2019-11-07 00:57:38,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:57:38,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 340 [2019-11-07 00:57:38,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:38,817 INFO L225 Difference]: With dead ends: 2597 [2019-11-07 00:57:38,818 INFO L226 Difference]: Without dead ends: 2137 [2019-11-07 00:57:38,820 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:57:38,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2019-11-07 00:57:38,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 2126. [2019-11-07 00:57:38,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2126 states. [2019-11-07 00:57:38,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2126 states to 2126 states and 3110 transitions. [2019-11-07 00:57:38,950 INFO L78 Accepts]: Start accepts. Automaton has 2126 states and 3110 transitions. Word has length 340 [2019-11-07 00:57:38,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:38,951 INFO L462 AbstractCegarLoop]: Abstraction has 2126 states and 3110 transitions. [2019-11-07 00:57:38,951 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:57:38,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2126 states and 3110 transitions. [2019-11-07 00:57:38,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2019-11-07 00:57:38,966 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:38,967 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:57:38,967 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:38,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:38,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1623250226, now seen corresponding path program 1 times [2019-11-07 00:57:38,968 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:38,968 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586438005] [2019-11-07 00:57:38,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:39,345 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2019-11-07 00:57:39,345 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586438005] [2019-11-07 00:57:39,346 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:57:39,346 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-07 00:57:39,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873856416] [2019-11-07 00:57:39,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:57:39,348 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:39,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:57:39,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2019-11-07 00:57:39,350 INFO L87 Difference]: Start difference. First operand 2126 states and 3110 transitions. Second operand 11 states. [2019-11-07 00:57:39,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:39,839 INFO L93 Difference]: Finished difference Result 3043 states and 4319 transitions. [2019-11-07 00:57:39,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-07 00:57:39,840 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 341 [2019-11-07 00:57:39,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:39,856 INFO L225 Difference]: With dead ends: 3043 [2019-11-07 00:57:39,856 INFO L226 Difference]: Without dead ends: 2100 [2019-11-07 00:57:39,861 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:57:39,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2019-11-07 00:57:39,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 2096. [2019-11-07 00:57:39,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2096 states. [2019-11-07 00:57:39,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 3059 transitions. [2019-11-07 00:57:39,984 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 3059 transitions. Word has length 341 [2019-11-07 00:57:39,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:39,985 INFO L462 AbstractCegarLoop]: Abstraction has 2096 states and 3059 transitions. [2019-11-07 00:57:39,985 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 00:57:39,985 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 3059 transitions. [2019-11-07 00:57:39,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2019-11-07 00:57:39,999 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:40,000 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:57:40,000 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:40,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:40,000 INFO L82 PathProgramCache]: Analyzing trace with hash 2058916794, now seen corresponding path program 1 times [2019-11-07 00:57:40,001 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:40,001 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107040224] [2019-11-07 00:57:40,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2019-11-07 00:57:40,327 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107040224] [2019-11-07 00:57:40,328 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:57:40,328 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:57:40,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117448134] [2019-11-07 00:57:40,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:57:40,329 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:40,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:57:40,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:57:40,330 INFO L87 Difference]: Start difference. First operand 2096 states and 3059 transitions. Second operand 3 states. [2019-11-07 00:57:40,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:40,453 INFO L93 Difference]: Finished difference Result 4761 states and 7127 transitions. [2019-11-07 00:57:40,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:57:40,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 366 [2019-11-07 00:57:40,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:40,470 INFO L225 Difference]: With dead ends: 4761 [2019-11-07 00:57:40,471 INFO L226 Difference]: Without dead ends: 2730 [2019-11-07 00:57:40,478 INFO L630 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 [2019-11-07 00:57:40,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2730 states. [2019-11-07 00:57:40,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2730 to 2728. [2019-11-07 00:57:40,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2728 states. [2019-11-07 00:57:40,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2728 states to 2728 states and 4123 transitions. [2019-11-07 00:57:40,628 INFO L78 Accepts]: Start accepts. Automaton has 2728 states and 4123 transitions. Word has length 366 [2019-11-07 00:57:40,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:40,628 INFO L462 AbstractCegarLoop]: Abstraction has 2728 states and 4123 transitions. [2019-11-07 00:57:40,628 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:57:40,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2728 states and 4123 transitions. [2019-11-07 00:57:40,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2019-11-07 00:57:40,646 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:40,647 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:57:40,647 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:40,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:40,648 INFO L82 PathProgramCache]: Analyzing trace with hash 203975663, now seen corresponding path program 1 times [2019-11-07 00:57:40,648 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:40,648 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846893536] [2019-11-07 00:57:40,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:40,915 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2019-11-07 00:57:40,916 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846893536] [2019-11-07 00:57:40,916 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:57:40,916 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:57:40,916 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203258910] [2019-11-07 00:57:40,917 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:57:40,917 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:40,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:57:40,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:57:40,918 INFO L87 Difference]: Start difference. First operand 2728 states and 4123 transitions. Second operand 3 states. [2019-11-07 00:57:41,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:41,084 INFO L93 Difference]: Finished difference Result 6609 states and 10239 transitions. [2019-11-07 00:57:41,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:57:41,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 384 [2019-11-07 00:57:41,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:41,110 INFO L225 Difference]: With dead ends: 6609 [2019-11-07 00:57:41,110 INFO L226 Difference]: Without dead ends: 3946 [2019-11-07 00:57:41,121 INFO L630 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 [2019-11-07 00:57:41,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3946 states. [2019-11-07 00:57:41,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3946 to 3944. [2019-11-07 00:57:41,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3944 states. [2019-11-07 00:57:41,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3944 states to 3944 states and 6155 transitions. [2019-11-07 00:57:41,329 INFO L78 Accepts]: Start accepts. Automaton has 3944 states and 6155 transitions. Word has length 384 [2019-11-07 00:57:41,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:41,329 INFO L462 AbstractCegarLoop]: Abstraction has 3944 states and 6155 transitions. [2019-11-07 00:57:41,329 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:57:41,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3944 states and 6155 transitions. [2019-11-07 00:57:41,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2019-11-07 00:57:41,354 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:41,355 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:57:41,355 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:41,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:41,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1166569383, now seen corresponding path program 1 times [2019-11-07 00:57:41,356 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:41,356 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288493044] [2019-11-07 00:57:41,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:41,672 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2019-11-07 00:57:41,672 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288493044] [2019-11-07 00:57:41,672 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:57:41,672 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:57:41,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348648461] [2019-11-07 00:57:41,674 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:57:41,674 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:41,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:57:41,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:57:41,674 INFO L87 Difference]: Start difference. First operand 3944 states and 6155 transitions. Second operand 3 states. [2019-11-07 00:57:41,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:41,924 INFO L93 Difference]: Finished difference Result 10161 states and 16175 transitions. [2019-11-07 00:57:41,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:57:41,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 383 [2019-11-07 00:57:41,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:41,965 INFO L225 Difference]: With dead ends: 10161 [2019-11-07 00:57:41,966 INFO L226 Difference]: Without dead ends: 6282 [2019-11-07 00:57:41,982 INFO L630 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 [2019-11-07 00:57:41,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6282 states. [2019-11-07 00:57:42,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6282 to 6280. [2019-11-07 00:57:42,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6280 states. [2019-11-07 00:57:42,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6280 states to 6280 states and 10027 transitions. [2019-11-07 00:57:42,388 INFO L78 Accepts]: Start accepts. Automaton has 6280 states and 10027 transitions. Word has length 383 [2019-11-07 00:57:42,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:42,389 INFO L462 AbstractCegarLoop]: Abstraction has 6280 states and 10027 transitions. [2019-11-07 00:57:42,389 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:57:42,389 INFO L276 IsEmpty]: Start isEmpty. Operand 6280 states and 10027 transitions. [2019-11-07 00:57:42,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2019-11-07 00:57:42,449 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:42,450 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:57:42,450 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:42,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:42,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1412159249, now seen corresponding path program 1 times [2019-11-07 00:57:42,451 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:42,452 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136740215] [2019-11-07 00:57:42,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2019-11-07 00:57:43,261 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136740215] [2019-11-07 00:57:43,261 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:57:43,261 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:57:43,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341919567] [2019-11-07 00:57:43,262 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:57:43,263 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:43,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:57:43,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:57:43,263 INFO L87 Difference]: Start difference. First operand 6280 states and 10027 transitions. Second operand 3 states. [2019-11-07 00:57:43,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:43,673 INFO L93 Difference]: Finished difference Result 16977 states and 27471 transitions. [2019-11-07 00:57:43,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:57:43,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 386 [2019-11-07 00:57:43,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:43,734 INFO L225 Difference]: With dead ends: 16977 [2019-11-07 00:57:43,734 INFO L226 Difference]: Without dead ends: 10762 [2019-11-07 00:57:43,763 INFO L630 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 [2019-11-07 00:57:43,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10762 states. [2019-11-07 00:57:44,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10762 to 10760. [2019-11-07 00:57:44,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10760 states. [2019-11-07 00:57:44,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10760 states to 10760 states and 17387 transitions. [2019-11-07 00:57:44,341 INFO L78 Accepts]: Start accepts. Automaton has 10760 states and 17387 transitions. Word has length 386 [2019-11-07 00:57:44,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:44,342 INFO L462 AbstractCegarLoop]: Abstraction has 10760 states and 17387 transitions. [2019-11-07 00:57:44,342 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:57:44,342 INFO L276 IsEmpty]: Start isEmpty. Operand 10760 states and 17387 transitions. [2019-11-07 00:57:44,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2019-11-07 00:57:44,426 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:44,427 INFO L410 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, 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] [2019-11-07 00:57:44,427 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:44,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:44,428 INFO L82 PathProgramCache]: Analyzing trace with hash -2032256724, now seen corresponding path program 1 times [2019-11-07 00:57:44,428 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:44,428 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32932132] [2019-11-07 00:57:44,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:45,189 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-11-07 00:57:45,190 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32932132] [2019-11-07 00:57:45,190 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202091728] [2019-11-07 00:57:45,191 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 [2019-11-07 00:57:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:46,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 3986 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:57:46,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:57:46,476 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-11-07 00:57:46,476 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:57:47,462 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:57:47,552 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:47,653 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-11-07 00:57:47,855 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:57:47,855 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-11-07 00:57:47,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923077251] [2019-11-07 00:57:47,856 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:57:47,857 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:47,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:57:47,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:57:47,858 INFO L87 Difference]: Start difference. First operand 10760 states and 17387 transitions. Second operand 9 states. [2019-11-07 00:57:50,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:50,024 INFO L93 Difference]: Finished difference Result 21498 states and 34754 transitions. [2019-11-07 00:57:50,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:57:50,025 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 349 [2019-11-07 00:57:50,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:50,073 INFO L225 Difference]: With dead ends: 21498 [2019-11-07 00:57:50,074 INFO L226 Difference]: Without dead ends: 10774 [2019-11-07 00:57:50,129 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 687 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 00:57:50,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10774 states. [2019-11-07 00:57:50,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10774 to 10774. [2019-11-07 00:57:50,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10774 states. [2019-11-07 00:57:50,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10774 states to 10774 states and 17405 transitions. [2019-11-07 00:57:50,868 INFO L78 Accepts]: Start accepts. Automaton has 10774 states and 17405 transitions. Word has length 349 [2019-11-07 00:57:50,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:50,868 INFO L462 AbstractCegarLoop]: Abstraction has 10774 states and 17405 transitions. [2019-11-07 00:57:50,868 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:57:50,869 INFO L276 IsEmpty]: Start isEmpty. Operand 10774 states and 17405 transitions. [2019-11-07 00:57:50,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2019-11-07 00:57:50,928 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:50,929 INFO L410 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, 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] [2019-11-07 00:57:51,139 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:57:51,140 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:51,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:51,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1962759948, now seen corresponding path program 1 times [2019-11-07 00:57:51,142 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:51,142 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139802460] [2019-11-07 00:57:51,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:51,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:51,782 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-11-07 00:57:51,782 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139802460] [2019-11-07 00:57:51,783 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472701655] [2019-11-07 00:57:51,783 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 [2019-11-07 00:57:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:52,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 3987 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:57:52,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:57:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2019-11-07 00:57:52,973 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:57:53,685 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:53,766 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:53,881 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-11-07 00:57:53,882 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:57:53,882 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-11-07 00:57:53,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142096211] [2019-11-07 00:57:53,883 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:57:53,883 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:53,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:57:53,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:57:53,884 INFO L87 Difference]: Start difference. First operand 10774 states and 17405 transitions. Second operand 7 states. [2019-11-07 00:57:55,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:55,652 INFO L93 Difference]: Finished difference Result 21501 states and 34887 transitions. [2019-11-07 00:57:55,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:57:55,653 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 350 [2019-11-07 00:57:55,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:55,698 INFO L225 Difference]: With dead ends: 21501 [2019-11-07 00:57:55,699 INFO L226 Difference]: Without dead ends: 10778 [2019-11-07 00:57:55,740 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 694 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-11-07 00:57:55,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10778 states. [2019-11-07 00:57:56,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10778 to 10778. [2019-11-07 00:57:56,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10778 states. [2019-11-07 00:57:56,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10778 states to 10778 states and 17410 transitions. [2019-11-07 00:57:56,870 INFO L78 Accepts]: Start accepts. Automaton has 10778 states and 17410 transitions. Word has length 350 [2019-11-07 00:57:56,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:56,871 INFO L462 AbstractCegarLoop]: Abstraction has 10778 states and 17410 transitions. [2019-11-07 00:57:56,871 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:57:56,871 INFO L276 IsEmpty]: Start isEmpty. Operand 10778 states and 17410 transitions. [2019-11-07 00:57:56,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2019-11-07 00:57:56,917 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:56,917 INFO L410 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, 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, 1] [2019-11-07 00:57:57,126 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:57:57,127 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:57,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:57,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1820389773, now seen corresponding path program 1 times [2019-11-07 00:57:57,127 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:57,128 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999595479] [2019-11-07 00:57:57,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:57,600 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2019-11-07 00:57:57,601 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999595479] [2019-11-07 00:57:57,601 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960133046] [2019-11-07 00:57:57,601 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 [2019-11-07 00:57:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:58,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 3988 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:57:58,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:57:58,756 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-11-07 00:57:58,757 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:57:59,581 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:57:59,665 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:59,750 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:59,923 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-11-07 00:57:59,923 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:57:59,924 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-11-07 00:57:59,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938139280] [2019-11-07 00:57:59,925 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:57:59,925 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:59,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:57:59,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-11-07 00:57:59,926 INFO L87 Difference]: Start difference. First operand 10778 states and 17410 transitions. Second operand 16 states.