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_spec4_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:16:36,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:16:36,285 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:16:36,303 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:16:36,304 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:16:36,305 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:16:36,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:16:36,308 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:16:36,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:16:36,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:16:36,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:16:36,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:16:36,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:16:36,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:16:36,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:16:36,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:16:36,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:16:36,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:16:36,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:16:36,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:16:36,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:16:36,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:16:36,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:16:36,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:16:36,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:16:36,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:16:36,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:16:36,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:16:36,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:16:36,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:16:36,343 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:16:36,344 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:16:36,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:16:36,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:16:36,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:16:36,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:16:36,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:16:36,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:16:36,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:16:36,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:16:36,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:16:36,352 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:16:36,370 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:16:36,371 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:16:36,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:16:36,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:16:36,373 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:16:36,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:16:36,373 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:16:36,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:16:36,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:16:36,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:16:36,375 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:16:36,375 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:16:36,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:16:36,376 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:16:36,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:16:36,376 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:16:36,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:16:36,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:16:36,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:16:36,377 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:16:36,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:16:36,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:16:36,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:16:36,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:16:36,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:16:36,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:16:36,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:16:36,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:16:36,378 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 21:16:36,674 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:16:36,689 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:16:36,695 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:16:36,696 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:16:36,697 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:16:36,697 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product32.cil.c [2019-10-13 21:16:36,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/105ec3703/da9675d300774af68b54726180df2666/FLAGa2599707c [2019-10-13 21:16:37,358 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:16:37,359 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product32.cil.c [2019-10-13 21:16:37,381 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/105ec3703/da9675d300774af68b54726180df2666/FLAGa2599707c [2019-10-13 21:16:37,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/105ec3703/da9675d300774af68b54726180df2666 [2019-10-13 21:16:37,582 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:16:37,584 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:16:37,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:16:37,585 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:16:37,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:16:37,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:37" (1/1) ... [2019-10-13 21:16:37,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7492c7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:37, skipping insertion in model container [2019-10-13 21:16:37,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:16:37" (1/1) ... [2019-10-13 21:16:37,603 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:16:37,710 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:16:38,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:16:38,452 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:16:38,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:16:38,762 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:16:38,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:38 WrapperNode [2019-10-13 21:16:38,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:16:38,764 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:16:38,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:16:38,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:16:38,782 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:38" (1/1) ... [2019-10-13 21:16:38,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:38" (1/1) ... [2019-10-13 21:16:38,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:38" (1/1) ... [2019-10-13 21:16:38,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:38" (1/1) ... [2019-10-13 21:16:38,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:38" (1/1) ... [2019-10-13 21:16:38,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:38" (1/1) ... [2019-10-13 21:16:38,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:38" (1/1) ... [2019-10-13 21:16:38,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:16:38,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:16:38,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:16:38,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:16:38,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:16:39,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:16:39,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:16:39,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:16:39,060 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:16:39,060 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:16:39,061 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:16:39,061 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:16:39,061 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:16:39,061 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:16:39,062 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:16:39,062 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:16:39,062 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:16:39,062 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:16:39,063 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:16:39,063 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:16:39,064 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:16:39,065 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:16:39,066 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:16:39,066 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:16:39,066 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:16:39,066 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:16:39,067 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:16:39,067 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:16:39,067 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:16:39,067 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:16:39,067 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:16:39,068 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:16:39,068 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:16:39,068 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:16:39,069 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:16:39,069 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:16:39,069 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:16:39,069 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:16:39,069 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:16:39,070 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:16:39,070 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:16:39,070 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:16:39,070 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:16:39,070 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:16:39,071 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:16:39,071 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:16:39,071 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:16:39,071 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:16:39,071 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:16:39,071 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:16:39,071 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:16:39,071 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:16:39,072 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:16:39,072 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:16:39,072 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:16:39,072 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:16:39,072 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:16:39,072 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:16:39,072 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:16:39,073 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:16:39,073 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:16:39,073 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 21:16:39,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:16:39,073 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:16:39,073 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-10-13 21:16:39,073 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-10-13 21:16:39,073 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:16:39,074 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:16:39,074 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:16:39,074 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:16:39,074 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:16:39,074 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:16:39,075 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:16:39,075 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:16:39,075 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-10-13 21:16:39,075 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:16:39,075 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:16:39,075 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:16:39,076 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:16:39,076 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:16:39,076 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:16:39,076 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:16:39,076 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:16:39,077 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:16:39,077 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:16:39,077 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:16:39,077 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:16:39,078 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:16:39,078 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:16:39,078 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:16:39,079 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 21:16:39,079 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:16:39,080 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:16:39,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-10-13 21:16:39,080 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:16:39,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:16:39,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:16:39,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:16:39,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:16:39,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:16:39,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:16:39,081 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:16:39,081 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:16:39,081 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:16:39,081 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:16:39,081 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:16:39,081 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:16:39,082 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:16:39,082 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:16:39,082 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:16:39,082 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:16:39,082 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:16:39,082 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:16:39,082 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:16:39,083 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:16:39,083 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:16:39,083 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:16:39,083 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:16:39,083 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:16:39,083 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:16:39,083 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:16:39,083 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:16:39,084 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:16:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:16:39,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:16:39,085 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:16:39,085 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:16:39,085 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:16:39,085 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:16:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:16:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:16:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:16:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:16:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:16:39,086 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:16:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:16:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:16:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:16:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:16:39,087 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:16:39,088 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:16:39,089 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:16:39,091 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:16:39,092 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:16:39,092 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:16:39,092 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:16:39,093 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:16:39,093 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:16:39,093 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:16:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:16:39,099 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:16:39,099 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:16:39,099 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:16:39,099 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:16:39,099 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:16:39,099 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:16:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:16:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:16:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:16:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:16:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:16:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:16:39,100 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:16:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:16:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:16:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:16:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:16:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:16:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:16:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:16:39,101 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:16:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:16:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:16:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:16:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:16:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:16:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:16:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:16:39,102 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:16:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:16:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:16:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:16:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:16:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:16:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 21:16:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:16:39,103 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:16:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:16:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:16:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:16:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:16:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:16:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:16:39,104 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:16:39,105 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:16:39,105 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:16:39,105 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:16:39,105 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:16:39,105 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:16:39,105 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:16:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:16:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:16:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:16:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:16:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:16:39,106 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-10-13 21:16:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-10-13 21:16:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:16:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:16:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:16:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:16:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:16:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:16:39,108 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:16:39,108 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:16:39,108 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:16:39,108 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:16:39,108 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:16:39,108 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:16:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:16:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 21:16:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:16:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:16:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-10-13 21:16:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:16:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:16:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-10-13 21:16:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:16:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:16:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:16:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:16:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:16:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:16:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:16:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:16:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:16:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:16:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:16:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:16:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:16:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:16:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:16:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:16:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:16:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:16:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:16:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:16:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:16:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:16:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:16:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:16:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:16:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:16:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:16:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:16:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:16:41,144 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:16:41,145 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:16:41,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:41 BoogieIcfgContainer [2019-10-13 21:16:41,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:16:41,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:16:41,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:16:41,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:16:41,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:16:37" (1/3) ... [2019-10-13 21:16:41,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0d2d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:41, skipping insertion in model container [2019-10-13 21:16:41,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:16:38" (2/3) ... [2019-10-13 21:16:41,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0d2d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:16:41, skipping insertion in model container [2019-10-13 21:16:41,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:16:41" (3/3) ... [2019-10-13 21:16:41,155 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product32.cil.c [2019-10-13 21:16:41,165 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:16:41,174 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:16:41,187 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:16:41,229 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:16:41,229 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:16:41,229 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:16:41,230 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:16:41,230 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:16:41,232 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:16:41,232 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:16:41,233 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:16:41,271 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states. [2019-10-13 21:16:41,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-13 21:16:41,308 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:41,310 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:16:41,312 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:41,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:41,318 INFO L82 PathProgramCache]: Analyzing trace with hash 460180424, now seen corresponding path program 1 times [2019-10-13 21:16:41,327 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:41,327 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749456064] [2019-10-13 21:16:41,328 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:41,328 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:41,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:42,019 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:42,020 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749456064] [2019-10-13 21:16:42,020 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:42,021 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:16:42,021 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412644314] [2019-10-13 21:16:42,026 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:16:42,028 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:42,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:16:42,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:42,045 INFO L87 Difference]: Start difference. First operand 637 states. Second operand 2 states. [2019-10-13 21:16:42,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:42,116 INFO L93 Difference]: Finished difference Result 904 states and 1227 transitions. [2019-10-13 21:16:42,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:16:42,118 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 173 [2019-10-13 21:16:42,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:42,141 INFO L225 Difference]: With dead ends: 904 [2019-10-13 21:16:42,141 INFO L226 Difference]: Without dead ends: 580 [2019-10-13 21:16:42,148 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:16:42,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2019-10-13 21:16:42,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2019-10-13 21:16:42,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2019-10-13 21:16:42,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 792 transitions. [2019-10-13 21:16:42,241 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 792 transitions. Word has length 173 [2019-10-13 21:16:42,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:42,243 INFO L462 AbstractCegarLoop]: Abstraction has 580 states and 792 transitions. [2019-10-13 21:16:42,243 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:16:42,244 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 792 transitions. [2019-10-13 21:16:42,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-13 21:16:42,249 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:42,249 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:16:42,250 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:42,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:42,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1260551552, now seen corresponding path program 1 times [2019-10-13 21:16:42,250 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:42,250 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912611788] [2019-10-13 21:16:42,251 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:42,251 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:42,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:42,444 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912611788] [2019-10-13 21:16:42,444 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:42,444 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:42,444 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110106101] [2019-10-13 21:16:42,447 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:42,447 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:42,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:42,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:42,448 INFO L87 Difference]: Start difference. First operand 580 states and 792 transitions. Second operand 3 states. [2019-10-13 21:16:42,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:42,547 INFO L93 Difference]: Finished difference Result 887 states and 1192 transitions. [2019-10-13 21:16:42,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:42,547 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2019-10-13 21:16:42,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:42,561 INFO L225 Difference]: With dead ends: 887 [2019-10-13 21:16:42,561 INFO L226 Difference]: Without dead ends: 583 [2019-10-13 21:16:42,566 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:42,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2019-10-13 21:16:42,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 582. [2019-10-13 21:16:42,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2019-10-13 21:16:42,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 794 transitions. [2019-10-13 21:16:42,619 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 794 transitions. Word has length 174 [2019-10-13 21:16:42,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:42,620 INFO L462 AbstractCegarLoop]: Abstraction has 582 states and 794 transitions. [2019-10-13 21:16:42,620 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:42,620 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 794 transitions. [2019-10-13 21:16:42,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-13 21:16:42,625 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:42,625 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:16:42,625 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:42,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:42,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1891942096, now seen corresponding path program 1 times [2019-10-13 21:16:42,626 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:42,626 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39759599] [2019-10-13 21:16:42,626 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:42,626 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:42,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:42,846 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:42,846 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39759599] [2019-10-13 21:16:42,847 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:42,847 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:42,847 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774076744] [2019-10-13 21:16:42,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:42,855 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:42,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:42,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:42,856 INFO L87 Difference]: Start difference. First operand 582 states and 794 transitions. Second operand 3 states. [2019-10-13 21:16:42,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:42,916 INFO L93 Difference]: Finished difference Result 1142 states and 1589 transitions. [2019-10-13 21:16:42,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:42,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2019-10-13 21:16:42,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:42,926 INFO L225 Difference]: With dead ends: 1142 [2019-10-13 21:16:42,926 INFO L226 Difference]: Without dead ends: 625 [2019-10-13 21:16:42,929 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:42,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2019-10-13 21:16:42,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 624. [2019-10-13 21:16:42,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2019-10-13 21:16:42,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 866 transitions. [2019-10-13 21:16:42,978 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 866 transitions. Word has length 184 [2019-10-13 21:16:42,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:42,980 INFO L462 AbstractCegarLoop]: Abstraction has 624 states and 866 transitions. [2019-10-13 21:16:42,981 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:42,981 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 866 transitions. [2019-10-13 21:16:42,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2019-10-13 21:16:42,992 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:42,993 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:16:42,993 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:42,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:42,994 INFO L82 PathProgramCache]: Analyzing trace with hash -754508202, now seen corresponding path program 1 times [2019-10-13 21:16:42,995 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:42,995 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976709986] [2019-10-13 21:16:42,996 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:42,996 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:42,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:43,261 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:43,261 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976709986] [2019-10-13 21:16:43,262 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:43,262 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:43,262 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087759638] [2019-10-13 21:16:43,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:43,264 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:43,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:43,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:43,265 INFO L87 Difference]: Start difference. First operand 624 states and 866 transitions. Second operand 3 states. [2019-10-13 21:16:43,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:43,312 INFO L93 Difference]: Finished difference Result 1265 states and 1800 transitions. [2019-10-13 21:16:43,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:43,313 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 185 [2019-10-13 21:16:43,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:43,320 INFO L225 Difference]: With dead ends: 1265 [2019-10-13 21:16:43,320 INFO L226 Difference]: Without dead ends: 706 [2019-10-13 21:16:43,324 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:43,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2019-10-13 21:16:43,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 705. [2019-10-13 21:16:43,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2019-10-13 21:16:43,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 1004 transitions. [2019-10-13 21:16:43,470 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 1004 transitions. Word has length 185 [2019-10-13 21:16:43,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:43,471 INFO L462 AbstractCegarLoop]: Abstraction has 705 states and 1004 transitions. [2019-10-13 21:16:43,471 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:43,471 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 1004 transitions. [2019-10-13 21:16:43,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-13 21:16:43,476 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:43,476 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:16:43,477 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:43,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:43,477 INFO L82 PathProgramCache]: Analyzing trace with hash 852653136, now seen corresponding path program 1 times [2019-10-13 21:16:43,477 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:43,478 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412517467] [2019-10-13 21:16:43,478 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:43,479 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:43,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:43,645 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:43,646 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412517467] [2019-10-13 21:16:43,646 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:43,646 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:43,646 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498032859] [2019-10-13 21:16:43,647 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:43,647 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:43,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:43,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:43,648 INFO L87 Difference]: Start difference. First operand 705 states and 1004 transitions. Second operand 3 states. [2019-10-13 21:16:43,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:43,692 INFO L93 Difference]: Finished difference Result 1502 states and 2204 transitions. [2019-10-13 21:16:43,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:43,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2019-10-13 21:16:43,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:43,700 INFO L225 Difference]: With dead ends: 1502 [2019-10-13 21:16:43,700 INFO L226 Difference]: Without dead ends: 862 [2019-10-13 21:16:43,703 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:43,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2019-10-13 21:16:43,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 861. [2019-10-13 21:16:43,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2019-10-13 21:16:43,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1268 transitions. [2019-10-13 21:16:43,746 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1268 transitions. Word has length 186 [2019-10-13 21:16:43,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:43,746 INFO L462 AbstractCegarLoop]: Abstraction has 861 states and 1268 transitions. [2019-10-13 21:16:43,746 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:43,746 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1268 transitions. [2019-10-13 21:16:43,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-13 21:16:43,751 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:43,752 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:16:43,752 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:43,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:43,752 INFO L82 PathProgramCache]: Analyzing trace with hash -2089090250, now seen corresponding path program 1 times [2019-10-13 21:16:43,753 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:43,753 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813069604] [2019-10-13 21:16:43,753 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:43,753 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:43,753 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:43,903 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:16:43,903 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813069604] [2019-10-13 21:16:43,904 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:43,905 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:43,905 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803550109] [2019-10-13 21:16:43,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:43,906 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:43,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:43,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:43,907 INFO L87 Difference]: Start difference. First operand 861 states and 1268 transitions. Second operand 3 states. [2019-10-13 21:16:44,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:44,021 INFO L93 Difference]: Finished difference Result 1958 states and 2976 transitions. [2019-10-13 21:16:44,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:44,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2019-10-13 21:16:44,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:44,030 INFO L225 Difference]: With dead ends: 1958 [2019-10-13 21:16:44,030 INFO L226 Difference]: Without dead ends: 1162 [2019-10-13 21:16:44,033 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:44,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2019-10-13 21:16:44,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1161. [2019-10-13 21:16:44,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1161 states. [2019-10-13 21:16:44,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1772 transitions. [2019-10-13 21:16:44,084 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1772 transitions. Word has length 187 [2019-10-13 21:16:44,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:44,086 INFO L462 AbstractCegarLoop]: Abstraction has 1161 states and 1772 transitions. [2019-10-13 21:16:44,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:44,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1772 transitions. [2019-10-13 21:16:44,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-13 21:16:44,094 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:44,094 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:16:44,097 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:44,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:44,098 INFO L82 PathProgramCache]: Analyzing trace with hash -579760363, now seen corresponding path program 1 times [2019-10-13 21:16:44,098 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:44,098 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547992470] [2019-10-13 21:16:44,099 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:44,099 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:44,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:44,358 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:44,359 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547992470] [2019-10-13 21:16:44,359 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:44,359 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:16:44,359 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989542395] [2019-10-13 21:16:44,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:44,360 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:44,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:44,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:16:44,361 INFO L87 Difference]: Start difference. First operand 1161 states and 1772 transitions. Second operand 7 states. [2019-10-13 21:16:47,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:47,613 INFO L93 Difference]: Finished difference Result 1761 states and 2565 transitions. [2019-10-13 21:16:47,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:16:47,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2019-10-13 21:16:47,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:47,623 INFO L225 Difference]: With dead ends: 1761 [2019-10-13 21:16:47,623 INFO L226 Difference]: Without dead ends: 1468 [2019-10-13 21:16:47,625 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:16:47,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2019-10-13 21:16:47,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1459. [2019-10-13 21:16:47,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1459 states. [2019-10-13 21:16:47,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2165 transitions. [2019-10-13 21:16:47,697 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2165 transitions. Word has length 190 [2019-10-13 21:16:47,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:47,698 INFO L462 AbstractCegarLoop]: Abstraction has 1459 states and 2165 transitions. [2019-10-13 21:16:47,698 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:47,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2165 transitions. [2019-10-13 21:16:47,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-13 21:16:47,705 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:47,706 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:16:47,706 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:47,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:47,707 INFO L82 PathProgramCache]: Analyzing trace with hash -810631432, now seen corresponding path program 1 times [2019-10-13 21:16:47,707 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:47,707 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008983786] [2019-10-13 21:16:47,707 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:47,707 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:47,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:48,139 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:48,139 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008983786] [2019-10-13 21:16:48,139 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:48,140 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2019-10-13 21:16:48,140 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376928543] [2019-10-13 21:16:48,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-13 21:16:48,141 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:48,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-13 21:16:48,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:16:48,142 INFO L87 Difference]: Start difference. First operand 1459 states and 2165 transitions. Second operand 20 states. [2019-10-13 21:16:48,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:48,805 INFO L93 Difference]: Finished difference Result 2166 states and 3119 transitions. [2019-10-13 21:16:48,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-13 21:16:48,805 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 191 [2019-10-13 21:16:48,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:48,814 INFO L225 Difference]: With dead ends: 2166 [2019-10-13 21:16:48,814 INFO L226 Difference]: Without dead ends: 1569 [2019-10-13 21:16:48,818 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:48,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2019-10-13 21:16:48,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1567. [2019-10-13 21:16:48,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1567 states. [2019-10-13 21:16:48,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2316 transitions. [2019-10-13 21:16:48,900 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2316 transitions. Word has length 191 [2019-10-13 21:16:48,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:48,901 INFO L462 AbstractCegarLoop]: Abstraction has 1567 states and 2316 transitions. [2019-10-13 21:16:48,901 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-13 21:16:48,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2316 transitions. [2019-10-13 21:16:48,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-13 21:16:48,909 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:48,909 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:48,910 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:48,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:48,910 INFO L82 PathProgramCache]: Analyzing trace with hash 774123990, now seen corresponding path program 1 times [2019-10-13 21:16:48,910 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:48,910 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655243682] [2019-10-13 21:16:48,911 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:48,911 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:48,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:49,122 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:16:49,122 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655243682] [2019-10-13 21:16:49,123 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:49,123 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:16:49,124 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599378750] [2019-10-13 21:16:49,125 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:16:49,125 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:49,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:16:49,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:16:49,126 INFO L87 Difference]: Start difference. First operand 1567 states and 2316 transitions. Second operand 8 states. [2019-10-13 21:16:50,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:50,244 INFO L93 Difference]: Finished difference Result 2816 states and 3991 transitions. [2019-10-13 21:16:50,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:50,244 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 200 [2019-10-13 21:16:50,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:50,265 INFO L225 Difference]: With dead ends: 2816 [2019-10-13 21:16:50,265 INFO L226 Difference]: Without dead ends: 2311 [2019-10-13 21:16:50,268 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:16:50,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2311 states. [2019-10-13 21:16:50,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2311 to 2292. [2019-10-13 21:16:50,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2292 states. [2019-10-13 21:16:50,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3294 transitions. [2019-10-13 21:16:50,400 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3294 transitions. Word has length 200 [2019-10-13 21:16:50,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:50,400 INFO L462 AbstractCegarLoop]: Abstraction has 2292 states and 3294 transitions. [2019-10-13 21:16:50,401 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:16:50,401 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3294 transitions. [2019-10-13 21:16:50,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-13 21:16:50,408 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:50,409 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:16:50,409 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:50,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:50,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1629602409, now seen corresponding path program 1 times [2019-10-13 21:16:50,410 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:50,410 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949132802] [2019-10-13 21:16:50,411 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:50,411 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:50,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:50,796 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:50,796 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949132802] [2019-10-13 21:16:50,797 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:50,797 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-10-13 21:16:50,797 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379282101] [2019-10-13 21:16:50,798 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-13 21:16:50,798 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:50,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-13 21:16:50,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:16:50,799 INFO L87 Difference]: Start difference. First operand 2292 states and 3294 transitions. Second operand 19 states. [2019-10-13 21:16:51,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:51,736 INFO L93 Difference]: Finished difference Result 2981 states and 4218 transitions. [2019-10-13 21:16:51,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-13 21:16:51,736 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 201 [2019-10-13 21:16:51,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:51,750 INFO L225 Difference]: With dead ends: 2981 [2019-10-13 21:16:51,750 INFO L226 Difference]: Without dead ends: 2291 [2019-10-13 21:16:51,758 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=1075, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:16:51,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2019-10-13 21:16:51,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2290. [2019-10-13 21:16:51,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2290 states. [2019-10-13 21:16:51,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2290 states to 2290 states and 3289 transitions. [2019-10-13 21:16:51,875 INFO L78 Accepts]: Start accepts. Automaton has 2290 states and 3289 transitions. Word has length 201 [2019-10-13 21:16:51,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:51,877 INFO L462 AbstractCegarLoop]: Abstraction has 2290 states and 3289 transitions. [2019-10-13 21:16:51,877 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-13 21:16:51,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2290 states and 3289 transitions. [2019-10-13 21:16:51,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-13 21:16:51,885 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:51,885 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:16:51,885 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:51,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:51,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1161770309, now seen corresponding path program 2 times [2019-10-13 21:16:51,886 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:51,886 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217143450] [2019-10-13 21:16:51,886 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:51,887 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:51,887 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:52,113 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:52,113 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217143450] [2019-10-13 21:16:52,113 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690555918] [2019-10-13 21:16:52,113 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:52,639 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:16:52,640 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:52,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 2228 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 21:16:52,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 21:16:52,912 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:53,406 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-13 21:16:53,407 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:53,407 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-10-13 21:16:53,408 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702525373] [2019-10-13 21:16:53,409 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:16:53,409 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:53,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:16:53,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-10-13 21:16:53,410 INFO L87 Difference]: Start difference. First operand 2290 states and 3289 transitions. Second operand 14 states. [2019-10-13 21:16:55,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:55,858 INFO L93 Difference]: Finished difference Result 6842 states and 9934 transitions. [2019-10-13 21:16:55,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:16:55,858 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 201 [2019-10-13 21:16:55,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:55,904 INFO L225 Difference]: With dead ends: 6842 [2019-10-13 21:16:55,904 INFO L226 Difference]: Without dead ends: 6839 [2019-10-13 21:16:55,910 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 396 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 21:16:55,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6839 states. [2019-10-13 21:16:56,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6839 to 5374. [2019-10-13 21:16:56,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5374 states. [2019-10-13 21:16:56,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5374 states to 5374 states and 7983 transitions. [2019-10-13 21:16:56,218 INFO L78 Accepts]: Start accepts. Automaton has 5374 states and 7983 transitions. Word has length 201 [2019-10-13 21:16:56,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:56,219 INFO L462 AbstractCegarLoop]: Abstraction has 5374 states and 7983 transitions. [2019-10-13 21:16:56,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:16:56,219 INFO L276 IsEmpty]: Start isEmpty. Operand 5374 states and 7983 transitions. [2019-10-13 21:16:56,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-13 21:16:56,240 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:56,240 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:56,448 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:56,449 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:56,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:56,450 INFO L82 PathProgramCache]: Analyzing trace with hash 155143872, now seen corresponding path program 1 times [2019-10-13 21:16:56,450 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:56,450 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170908744] [2019-10-13 21:16:56,451 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:56,451 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:56,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:56,785 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-13 21:16:56,786 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170908744] [2019-10-13 21:16:56,786 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083452968] [2019-10-13 21:16:56,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:57,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:57,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 21:16:57,775 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:58,107 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:58,186 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:58,274 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:58,381 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 21:16:58,381 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:58,382 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 9] total 24 [2019-10-13 21:16:58,382 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14320786] [2019-10-13 21:16:58,383 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:16:58,383 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:58,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:16:58,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2019-10-13 21:16:58,385 INFO L87 Difference]: Start difference. First operand 5374 states and 7983 transitions. Second operand 9 states. [2019-10-13 21:17:00,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:00,047 INFO L93 Difference]: Finished difference Result 10722 states and 15940 transitions. [2019-10-13 21:17:00,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:17:00,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 203 [2019-10-13 21:17:00,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:00,081 INFO L225 Difference]: With dead ends: 10722 [2019-10-13 21:17:00,082 INFO L226 Difference]: Without dead ends: 5392 [2019-10-13 21:17:00,100 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 390 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2019-10-13 21:17:00,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5392 states. [2019-10-13 21:17:00,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5392 to 5392. [2019-10-13 21:17:00,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5392 states. [2019-10-13 21:17:00,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 8004 transitions. [2019-10-13 21:17:00,343 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 8004 transitions. Word has length 203 [2019-10-13 21:17:00,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:00,344 INFO L462 AbstractCegarLoop]: Abstraction has 5392 states and 8004 transitions. [2019-10-13 21:17:00,344 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:17:00,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 8004 transitions. [2019-10-13 21:17:00,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 21:17:00,364 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:00,365 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:00,577 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:17:00,578 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:00,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:00,578 INFO L82 PathProgramCache]: Analyzing trace with hash -270148225, now seen corresponding path program 1 times [2019-10-13 21:17:00,579 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:00,579 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219295316] [2019-10-13 21:17:00,579 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:00,579 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:00,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:00,771 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2019-10-13 21:17:00,772 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219295316] [2019-10-13 21:17:00,772 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140837574] [2019-10-13 21:17:00,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:17:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:01,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 3009 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:17:01,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:17:01,736 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 21:17:01,737 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:17:02,080 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:17:02,131 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:17:02,183 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:17:02,183 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:17:02,183 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11, 7] total 20 [2019-10-13 21:17:02,184 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074167281] [2019-10-13 21:17:02,187 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:17:02,188 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:02,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:17:02,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2019-10-13 21:17:02,189 INFO L87 Difference]: Start difference. First operand 5392 states and 8004 transitions. Second operand 7 states. [2019-10-13 21:17:03,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:03,379 INFO L93 Difference]: Finished difference Result 10692 states and 15905 transitions. [2019-10-13 21:17:03,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:17:03,380 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2019-10-13 21:17:03,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:03,409 INFO L225 Difference]: With dead ends: 10692 [2019-10-13 21:17:03,409 INFO L226 Difference]: Without dead ends: 5392 [2019-10-13 21:17:03,430 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 397 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2019-10-13 21:17:03,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5392 states. [2019-10-13 21:17:03,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5392 to 5392. [2019-10-13 21:17:03,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5392 states. [2019-10-13 21:17:03,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 7982 transitions. [2019-10-13 21:17:03,638 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 7982 transitions. Word has length 204 [2019-10-13 21:17:03,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:03,638 INFO L462 AbstractCegarLoop]: Abstraction has 5392 states and 7982 transitions. [2019-10-13 21:17:03,639 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:17:03,639 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 7982 transitions. [2019-10-13 21:17:03,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-13 21:17:03,657 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:03,657 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:17:03,865 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:17:03,865 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:03,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:03,866 INFO L82 PathProgramCache]: Analyzing trace with hash 908813455, now seen corresponding path program 1 times [2019-10-13 21:17:03,866 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:03,866 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273925088] [2019-10-13 21:17:03,867 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:03,867 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:03,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:03,993 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:17:03,994 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273925088] [2019-10-13 21:17:03,994 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092619953] [2019-10-13 21:17:03,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:17:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:04,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 3004 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:17:04,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:17:04,887 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:17:04,887 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:17:05,125 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:17:05,162 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:17:05,234 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:17:05,234 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:17:05,234 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-10-13 21:17:05,234 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461963485] [2019-10-13 21:17:05,235 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:17:05,235 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:05,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:17:05,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:17:05,243 INFO L87 Difference]: Start difference. First operand 5392 states and 7982 transitions. Second operand 7 states. [2019-10-13 21:17:06,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:17:06,701 INFO L93 Difference]: Finished difference Result 9919 states and 14541 transitions. [2019-10-13 21:17:06,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:17:06,702 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2019-10-13 21:17:06,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:17:06,728 INFO L225 Difference]: With dead ends: 9919 [2019-10-13 21:17:06,728 INFO L226 Difference]: Without dead ends: 5404 [2019-10-13 21:17:06,743 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 399 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-10-13 21:17:06,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5404 states. [2019-10-13 21:17:06,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5404 to 5392. [2019-10-13 21:17:06,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5392 states. [2019-10-13 21:17:06,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 7980 transitions. [2019-10-13 21:17:06,939 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 7980 transitions. Word has length 205 [2019-10-13 21:17:06,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:17:06,939 INFO L462 AbstractCegarLoop]: Abstraction has 5392 states and 7980 transitions. [2019-10-13 21:17:06,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:17:06,940 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 7980 transitions. [2019-10-13 21:17:06,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-10-13 21:17:06,961 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:17:06,961 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:17:07,170 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:17:07,171 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:17:07,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:17:07,172 INFO L82 PathProgramCache]: Analyzing trace with hash 2129566039, now seen corresponding path program 1 times [2019-10-13 21:17:07,172 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:17:07,172 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446382033] [2019-10-13 21:17:07,173 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:07,173 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:17:07,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:17:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:07,387 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-10-13 21:17:07,387 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446382033] [2019-10-13 21:17:07,387 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079322818] [2019-10-13 21:17:07,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:17:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:17:07,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 3002 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:17:07,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:17:08,143 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:17:08,144 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:17:08,512 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:17:08,598 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:17:08,656 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:17:08,755 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:17:08,755 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:17:08,755 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-10-13 21:17:08,755 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571755540] [2019-10-13 21:17:08,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:17:08,757 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:17:08,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:17:08,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-10-13 21:17:08,758 INFO L87 Difference]: Start difference. First operand 5392 states and 7980 transitions. Second operand 16 states.