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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/email_spec9_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 15:11:05,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 15:11:05,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 15:11:05,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 15:11:05,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 15:11:05,050 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 15:11:05,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 15:11:05,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 15:11:05,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 15:11:05,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 15:11:05,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 15:11:05,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 15:11:05,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 15:11:05,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 15:11:05,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 15:11:05,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 15:11:05,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 15:11:05,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 15:11:05,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 15:11:05,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 15:11:05,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 15:11:05,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 15:11:05,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 15:11:05,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 15:11:05,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 15:11:05,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 15:11:05,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 15:11:05,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 15:11:05,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 15:11:05,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 15:11:05,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 15:11:05,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 15:11:05,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 15:11:05,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 15:11:05,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 15:11:05,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 15:11:05,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 15:11:05,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 15:11:05,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 15:11:05,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 15:11:05,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 15:11:05,091 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 [2019-10-07 15:11:05,105 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 15:11:05,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 15:11:05,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 15:11:05,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 15:11:05,107 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 15:11:05,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 15:11:05,107 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 15:11:05,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 15:11:05,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 15:11:05,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 15:11:05,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 15:11:05,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 15:11:05,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 15:11:05,109 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 15:11:05,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 15:11:05,109 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 15:11:05,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 15:11:05,109 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 15:11:05,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 15:11:05,110 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 15:11:05,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 15:11:05,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 15:11:05,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 15:11:05,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 15:11:05,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 15:11:05,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 15:11:05,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 15:11:05,111 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 15:11:05,112 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-07 15:11:05,383 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 15:11:05,400 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 15:11:05,404 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 15:11:05,406 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 15:11:05,406 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 15:11:05,407 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product22.cil.c [2019-10-07 15:11:05,485 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb898100a/f615d3d4b1594599816d3983599c0fa8/FLAG6e3a8e27d [2019-10-07 15:11:06,116 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 15:11:06,117 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product22.cil.c [2019-10-07 15:11:06,141 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb898100a/f615d3d4b1594599816d3983599c0fa8/FLAG6e3a8e27d [2019-10-07 15:11:06,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb898100a/f615d3d4b1594599816d3983599c0fa8 [2019-10-07 15:11:06,349 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 15:11:06,351 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 15:11:06,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 15:11:06,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 15:11:06,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 15:11:06,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:11:06" (1/1) ... [2019-10-07 15:11:06,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@117b6aad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:11:06, skipping insertion in model container [2019-10-07 15:11:06,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:11:06" (1/1) ... [2019-10-07 15:11:06,368 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 15:11:06,458 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 15:11:07,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:11:07,318 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 15:11:07,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:11:07,563 INFO L192 MainTranslator]: Completed translation [2019-10-07 15:11:07,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:11:07 WrapperNode [2019-10-07 15:11:07,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 15:11:07,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 15:11:07,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 15:11:07,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 15:11:07,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:11:07" (1/1) ... [2019-10-07 15:11:07,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:11:07" (1/1) ... [2019-10-07 15:11:07,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:11:07" (1/1) ... [2019-10-07 15:11:07,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:11:07" (1/1) ... [2019-10-07 15:11:07,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:11:07" (1/1) ... [2019-10-07 15:11:07,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:11:07" (1/1) ... [2019-10-07 15:11:07,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:11:07" (1/1) ... [2019-10-07 15:11:07,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 15:11:07,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 15:11:07,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 15:11:07,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 15:11:07,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:11:07" (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 [2019-10-07 15:11:07,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 15:11:07,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 15:11:07,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 15:11:07,811 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-07 15:11:07,811 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-07 15:11:07,812 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-07 15:11:07,812 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-07 15:11:07,812 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-07 15:11:07,812 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-07 15:11:07,813 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-07 15:11:07,813 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-07 15:11:07,814 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-07 15:11:07,814 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-07 15:11:07,816 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-07 15:11:07,816 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-07 15:11:07,816 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-07 15:11:07,817 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-07 15:11:07,817 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-07 15:11:07,817 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-07 15:11:07,817 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-07 15:11:07,818 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-07 15:11:07,820 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-07 15:11:07,820 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-07 15:11:07,820 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-07 15:11:07,820 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-07 15:11:07,821 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-07 15:11:07,821 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-07 15:11:07,821 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-07 15:11:07,821 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-07 15:11:07,821 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-07 15:11:07,821 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-07 15:11:07,822 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-07 15:11:07,822 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-07 15:11:07,822 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-07 15:11:07,823 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-07 15:11:07,823 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-07 15:11:07,823 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-07 15:11:07,823 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-07 15:11:07,823 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 15:11:07,824 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-07 15:11:07,824 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-07 15:11:07,824 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-07 15:11:07,824 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-07 15:11:07,824 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-07 15:11:07,824 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-07 15:11:07,825 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-07 15:11:07,825 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-07 15:11:07,825 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-07 15:11:07,825 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-07 15:11:07,825 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-07 15:11:07,825 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-07 15:11:07,826 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-07 15:11:07,826 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-07 15:11:07,826 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-07 15:11:07,826 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-07 15:11:07,826 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-07 15:11:07,826 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-07 15:11:07,827 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-07 15:11:07,827 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-07 15:11:07,828 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-07 15:11:07,828 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-07 15:11:07,828 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-07 15:11:07,828 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-07 15:11:07,828 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-07 15:11:07,829 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-07 15:11:07,829 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AutoResponder [2019-10-07 15:11:07,829 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-07 15:11:07,829 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-07 15:11:07,829 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-07 15:11:07,830 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-07 15:11:07,830 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-07 15:11:07,830 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-07 15:11:07,831 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-07 15:11:07,831 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-07 15:11:07,832 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-07 15:11:07,833 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-07 15:11:07,833 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-07 15:11:07,833 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-07 15:11:07,834 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-07 15:11:07,834 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-07 15:11:07,834 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-07 15:11:07,835 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-07 15:11:07,835 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-07 15:11:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-07 15:11:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-07 15:11:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-07 15:11:07,836 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 15:11:07,837 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 15:11:07,837 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-07 15:11:07,838 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-07 15:11:07,838 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-07 15:11:07,838 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-07 15:11:07,838 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-07 15:11:07,838 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-07 15:11:07,838 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-07 15:11:07,838 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-07 15:11:07,839 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-07 15:11:07,839 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-07 15:11:07,839 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-07 15:11:07,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 15:11:07,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 15:11:07,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 15:11:07,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 15:11:07,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 15:11:07,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 15:11:07,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 15:11:07,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-07 15:11:07,840 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-07 15:11:07,840 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-07 15:11:07,841 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 15:11:07,841 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 15:11:07,841 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 15:11:07,841 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 15:11:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 15:11:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 15:11:07,841 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 15:11:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-07 15:11:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-07 15:11:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-07 15:11:07,842 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-07 15:11:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-07 15:11:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-07 15:11:07,843 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-07 15:11:07,844 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-07 15:11:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-07 15:11:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-07 15:11:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-07 15:11:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-07 15:11:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 15:11:07,845 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-07 15:11:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-07 15:11:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-07 15:11:07,846 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-07 15:11:07,847 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-07 15:11:07,851 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-07 15:11:07,851 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-07 15:11:07,852 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-07 15:11:07,852 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-07 15:11:07,852 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-07 15:11:07,852 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-07 15:11:07,852 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-07 15:11:07,852 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-07 15:11:07,852 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-07 15:11:07,853 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-07 15:11:07,853 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-07 15:11:07,853 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-07 15:11:07,853 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-07 15:11:07,853 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-07 15:11:07,853 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-07 15:11:07,854 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-07 15:11:07,854 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-07 15:11:07,854 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-07 15:11:07,854 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-07 15:11:07,854 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-07 15:11:07,854 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-07 15:11:07,854 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-07 15:11:07,855 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-07 15:11:07,855 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-07 15:11:07,855 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-07 15:11:07,855 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-07 15:11:07,855 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-07 15:11:07,855 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-07 15:11:07,855 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-07 15:11:07,856 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-07 15:11:07,856 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-07 15:11:07,856 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-07 15:11:07,856 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-07 15:11:07,856 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-07 15:11:07,856 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-07 15:11:07,856 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 15:11:07,856 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-07 15:11:07,857 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-07 15:11:07,857 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-07 15:11:07,857 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-07 15:11:07,857 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-07 15:11:07,857 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-07 15:11:07,857 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-07 15:11:07,857 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-07 15:11:07,858 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-07 15:11:07,858 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-07 15:11:07,858 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-07 15:11:07,858 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-07 15:11:07,858 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-07 15:11:07,858 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-07 15:11:07,858 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-07 15:11:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-07 15:11:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-07 15:11:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-07 15:11:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-07 15:11:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-07 15:11:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-07 15:11:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-07 15:11:07,859 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-07 15:11:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-07 15:11:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-07 15:11:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-07 15:11:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-07 15:11:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-07 15:11:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-07 15:11:07,860 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-07 15:11:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-07 15:11:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-07 15:11:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AutoResponder [2019-10-07 15:11:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-07 15:11:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-07 15:11:07,861 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 15:11:07,862 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 15:11:07,862 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 15:11:07,862 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-07 15:11:07,862 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-07 15:11:07,862 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-07 15:11:07,863 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-07 15:11:07,863 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 15:11:07,863 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 15:11:07,863 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-07 15:11:07,863 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-07 15:11:07,863 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-07 15:11:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-07 15:11:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-07 15:11:07,864 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 15:11:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 15:11:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 15:11:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 15:11:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 15:11:07,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 15:11:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 15:11:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 15:11:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 15:11:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 15:11:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 15:11:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 15:11:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 15:11:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 15:11:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 15:11:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 15:11:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 15:11:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-07 15:11:07,868 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 15:11:07,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 15:11:07,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 15:11:07,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 15:11:12,138 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 15:11:12,138 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-07 15:11:12,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:11:12 BoogieIcfgContainer [2019-10-07 15:11:12,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 15:11:12,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 15:11:12,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 15:11:12,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 15:11:12,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:11:06" (1/3) ... [2019-10-07 15:11:12,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d8ba926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:11:12, skipping insertion in model container [2019-10-07 15:11:12,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:11:07" (2/3) ... [2019-10-07 15:11:12,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d8ba926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:11:12, skipping insertion in model container [2019-10-07 15:11:12,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:11:12" (3/3) ... [2019-10-07 15:11:12,149 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product22.cil.c [2019-10-07 15:11:12,159 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 15:11:12,173 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 15:11:12,185 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 15:11:12,235 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 15:11:12,235 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 15:11:12,235 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 15:11:12,236 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 15:11:12,240 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 15:11:12,240 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 15:11:12,240 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 15:11:12,240 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 15:11:12,280 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states. [2019-10-07 15:11:12,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-10-07 15:11:12,297 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:11:12,299 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-07 15:11:12,301 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:11:12,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:11:12,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1943766214, now seen corresponding path program 1 times [2019-10-07 15:11:12,317 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:11:12,317 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:12,317 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:12,318 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:12,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:11:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:11:13,139 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 15:11:13,140 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:13,141 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:11:13,141 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 15:11:13,146 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 15:11:13,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 15:11:13,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 15:11:13,164 INFO L87 Difference]: Start difference. First operand 375 states. Second operand 2 states. [2019-10-07 15:11:13,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:11:13,242 INFO L93 Difference]: Finished difference Result 551 states and 650 transitions. [2019-10-07 15:11:13,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 15:11:13,246 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 114 [2019-10-07 15:11:13,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:11:13,277 INFO L225 Difference]: With dead ends: 551 [2019-10-07 15:11:13,277 INFO L226 Difference]: Without dead ends: 354 [2019-10-07 15:11:13,291 INFO L606 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 [2019-10-07 15:11:13,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2019-10-07 15:11:13,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 354. [2019-10-07 15:11:13,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2019-10-07 15:11:13,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 417 transitions. [2019-10-07 15:11:13,380 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 417 transitions. Word has length 114 [2019-10-07 15:11:13,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:11:13,383 INFO L462 AbstractCegarLoop]: Abstraction has 354 states and 417 transitions. [2019-10-07 15:11:13,383 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 15:11:13,383 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 417 transitions. [2019-10-07 15:11:13,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-07 15:11:13,387 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:11:13,388 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-07 15:11:13,388 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:11:13,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:11:13,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1118741200, now seen corresponding path program 1 times [2019-10-07 15:11:13,389 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:11:13,389 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:13,389 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:13,389 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:13,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:11:13,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:11:13,614 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 15:11:13,614 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:13,615 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:11:13,615 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:11:13,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:11:13,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:11:13,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:11:13,618 INFO L87 Difference]: Start difference. First operand 354 states and 417 transitions. Second operand 3 states. [2019-10-07 15:11:13,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:11:13,705 INFO L93 Difference]: Finished difference Result 536 states and 622 transitions. [2019-10-07 15:11:13,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:11:13,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 115 [2019-10-07 15:11:13,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:11:13,718 INFO L225 Difference]: With dead ends: 536 [2019-10-07 15:11:13,719 INFO L226 Difference]: Without dead ends: 356 [2019-10-07 15:11:13,724 INFO L606 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 [2019-10-07 15:11:13,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2019-10-07 15:11:13,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2019-10-07 15:11:13,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2019-10-07 15:11:13,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 419 transitions. [2019-10-07 15:11:13,787 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 419 transitions. Word has length 115 [2019-10-07 15:11:13,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:11:13,788 INFO L462 AbstractCegarLoop]: Abstraction has 356 states and 419 transitions. [2019-10-07 15:11:13,788 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:11:13,788 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 419 transitions. [2019-10-07 15:11:13,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-07 15:11:13,791 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:11:13,791 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-07 15:11:13,791 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:11:13,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:11:13,792 INFO L82 PathProgramCache]: Analyzing trace with hash 957558595, now seen corresponding path program 1 times [2019-10-07 15:11:13,792 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:11:13,792 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:13,792 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:13,793 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:13,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:11:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:11:13,960 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 15:11:13,960 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:13,960 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:11:13,960 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:11:13,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:11:13,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:11:13,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:11:13,964 INFO L87 Difference]: Start difference. First operand 356 states and 419 transitions. Second operand 3 states. [2019-10-07 15:11:14,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:11:14,021 INFO L93 Difference]: Finished difference Result 696 states and 848 transitions. [2019-10-07 15:11:14,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:11:14,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2019-10-07 15:11:14,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:11:14,027 INFO L225 Difference]: With dead ends: 696 [2019-10-07 15:11:14,027 INFO L226 Difference]: Without dead ends: 398 [2019-10-07 15:11:14,029 INFO L606 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 [2019-10-07 15:11:14,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2019-10-07 15:11:14,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 397. [2019-10-07 15:11:14,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2019-10-07 15:11:14,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 490 transitions. [2019-10-07 15:11:14,065 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 490 transitions. Word has length 127 [2019-10-07 15:11:14,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:11:14,066 INFO L462 AbstractCegarLoop]: Abstraction has 397 states and 490 transitions. [2019-10-07 15:11:14,066 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:11:14,066 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 490 transitions. [2019-10-07 15:11:14,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-07 15:11:14,073 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:11:14,073 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-07 15:11:14,073 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:11:14,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:11:14,074 INFO L82 PathProgramCache]: Analyzing trace with hash -392699618, now seen corresponding path program 1 times [2019-10-07 15:11:14,074 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:11:14,074 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:14,074 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:14,074 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:14,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:11:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:11:14,387 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 15:11:14,387 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:14,388 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:11:14,388 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:11:14,389 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:11:14,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:11:14,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:11:14,390 INFO L87 Difference]: Start difference. First operand 397 states and 490 transitions. Second operand 3 states. [2019-10-07 15:11:14,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:11:14,418 INFO L93 Difference]: Finished difference Result 610 states and 733 transitions. [2019-10-07 15:11:14,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:11:14,418 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 128 [2019-10-07 15:11:14,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:11:14,422 INFO L225 Difference]: With dead ends: 610 [2019-10-07 15:11:14,422 INFO L226 Difference]: Without dead ends: 431 [2019-10-07 15:11:14,423 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:11:14,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2019-10-07 15:11:14,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2019-10-07 15:11:14,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2019-10-07 15:11:14,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 522 transitions. [2019-10-07 15:11:14,445 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 522 transitions. Word has length 128 [2019-10-07 15:11:14,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:11:14,446 INFO L462 AbstractCegarLoop]: Abstraction has 431 states and 522 transitions. [2019-10-07 15:11:14,446 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:11:14,446 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 522 transitions. [2019-10-07 15:11:14,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-10-07 15:11:14,450 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:11:14,450 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:11:14,450 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:11:14,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:11:14,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1808794563, now seen corresponding path program 1 times [2019-10-07 15:11:14,451 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:11:14,451 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:14,451 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:14,451 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:14,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:11:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:11:14,769 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-07 15:11:14,769 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:14,770 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:11:14,770 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-07 15:11:14,771 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-07 15:11:14,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-07 15:11:14,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-10-07 15:11:14,772 INFO L87 Difference]: Start difference. First operand 431 states and 522 transitions. Second operand 11 states. [2019-10-07 15:11:17,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:11:17,445 INFO L93 Difference]: Finished difference Result 555 states and 648 transitions. [2019-10-07 15:11:17,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-07 15:11:17,445 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 222 [2019-10-07 15:11:17,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:11:17,449 INFO L225 Difference]: With dead ends: 555 [2019-10-07 15:11:17,449 INFO L226 Difference]: Without dead ends: 487 [2019-10-07 15:11:17,450 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2019-10-07 15:11:17,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2019-10-07 15:11:17,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 485. [2019-10-07 15:11:17,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2019-10-07 15:11:17,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 576 transitions. [2019-10-07 15:11:17,477 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 576 transitions. Word has length 222 [2019-10-07 15:11:17,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:11:17,478 INFO L462 AbstractCegarLoop]: Abstraction has 485 states and 576 transitions. [2019-10-07 15:11:17,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-07 15:11:17,478 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 576 transitions. [2019-10-07 15:11:17,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-07 15:11:17,483 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:11:17,483 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:11:17,484 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:11:17,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:11:17,484 INFO L82 PathProgramCache]: Analyzing trace with hash -475712661, now seen corresponding path program 1 times [2019-10-07 15:11:17,484 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:11:17,484 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:17,485 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:17,485 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:11:17,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:11:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:11:18,208 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-07 15:11:18,208 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:11:18,208 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:11:18,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:11:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:11:18,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 3027 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 15:11:18,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:11:19,146 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-10-07 15:11:19,147 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:11:19,706 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-07 15:11:19,707 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 15:11:19,748 INFO L162 IcfgInterpreter]: Started Sifa with 195 locations of interest [2019-10-07 15:11:19,749 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 15:11:19,756 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 15:11:19,764 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 15:11:19,765 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 15:12:22,859 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 689 [2019-10-07 15:12:27,185 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 301 DAG size of output: 245 [2019-10-07 15:12:27,553 WARN L191 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 726 [2019-10-07 15:12:27,837 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 726 [2019-10-07 15:12:28,077 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 726 [2019-10-07 15:12:28,236 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 450 [2019-10-07 15:12:28,891 WARN L191 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 15:12:29,601 WARN L191 SmtUtils]: Spent 679.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 15:12:30,240 WARN L191 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 15:12:30,437 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 450 [2019-10-07 15:12:31,046 WARN L191 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 15:12:32,278 WARN L191 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1026 DAG size of output: 1024 [2019-10-07 15:12:32,901 WARN L191 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 15:12:33,045 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 450 [2019-10-07 15:12:33,678 WARN L191 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 15:12:34,294 WARN L191 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 15:12:34,893 WARN L191 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 15:12:35,097 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 450 [2019-10-07 15:12:35,753 WARN L191 SmtUtils]: Spent 654.00 ms on a formula simplification that was a NOOP. DAG size: 1024 [2019-10-07 15:12:35,788 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 562 for LOIs [2019-10-07 15:12:36,185 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 655 [2019-10-07 15:12:36,289 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 655 [2019-10-07 15:12:36,414 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 450 [2019-10-07 15:12:36,860 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 953 [2019-10-07 15:12:36,862 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1064 for LOIs [2019-10-07 15:12:37,468 WARN L191 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:12:38,058 WARN L191 SmtUtils]: Spent 586.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:12:38,292 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:12:39,145 WARN L191 SmtUtils]: Spent 851.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:12:39,765 WARN L191 SmtUtils]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:12:40,362 WARN L191 SmtUtils]: Spent 593.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:12:40,581 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:12:41,442 WARN L191 SmtUtils]: Spent 859.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:12:42,062 WARN L191 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:12:42,664 WARN L191 SmtUtils]: Spent 598.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:12:42,866 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:12:43,700 WARN L191 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:12:44,783 WARN L191 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 1194 DAG size of output: 1064 [2019-10-07 15:12:45,377 WARN L191 SmtUtils]: Spent 591.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:12:45,643 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:12:46,487 WARN L191 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:12:47,092 WARN L191 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:12:47,698 WARN L191 SmtUtils]: Spent 603.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:12:47,897 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:12:48,735 WARN L191 SmtUtils]: Spent 836.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:12:49,335 WARN L191 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:12:49,922 WARN L191 SmtUtils]: Spent 584.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:12:50,118 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:12:50,978 WARN L191 SmtUtils]: Spent 858.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:12:51,572 WARN L191 SmtUtils]: Spent 591.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:12:52,156 WARN L191 SmtUtils]: Spent 580.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:12:52,364 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:12:53,205 WARN L191 SmtUtils]: Spent 839.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:12:53,797 WARN L191 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:12:54,398 WARN L191 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:12:54,595 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:12:55,442 WARN L191 SmtUtils]: Spent 844.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:12:56,035 WARN L191 SmtUtils]: Spent 590.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:12:56,623 WARN L191 SmtUtils]: Spent 585.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:12:56,823 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:12:57,672 WARN L191 SmtUtils]: Spent 847.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:12:58,262 WARN L191 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:12:58,850 WARN L191 SmtUtils]: Spent 584.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:12:59,046 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:12:59,882 WARN L191 SmtUtils]: Spent 834.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:00,462 WARN L191 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:13:01,060 WARN L191 SmtUtils]: Spent 594.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:13:01,256 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:13:02,080 WARN L191 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:02,664 WARN L191 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:13:03,250 WARN L191 SmtUtils]: Spent 582.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:13:03,445 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:13:04,279 WARN L191 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:04,863 WARN L191 SmtUtils]: Spent 581.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:13:05,444 WARN L191 SmtUtils]: Spent 578.00 ms on a formula simplification that was a NOOP. DAG size: 1064 [2019-10-07 15:13:05,650 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:13:06,483 WARN L191 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:07,369 WARN L191 SmtUtils]: Spent 843.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:08,198 WARN L191 SmtUtils]: Spent 826.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:08,406 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:13:09,229 WARN L191 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:10,738 WARN L191 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 1194 DAG size of output: 1192 [2019-10-07 15:13:11,584 WARN L191 SmtUtils]: Spent 841.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:11,797 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:13:12,623 WARN L191 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:13,458 WARN L191 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:14,298 WARN L191 SmtUtils]: Spent 836.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:14,493 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:13:15,333 WARN L191 SmtUtils]: Spent 838.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:16,211 WARN L191 SmtUtils]: Spent 836.00 ms on a formula simplification that was a NOOP. DAG size: 1196 [2019-10-07 15:13:17,049 WARN L191 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 1196 [2019-10-07 15:13:17,253 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 579 [2019-10-07 15:13:18,070 WARN L191 SmtUtils]: Spent 815.00 ms on a formula simplification that was a NOOP. DAG size: 1196 [2019-10-07 15:13:19,594 WARN L191 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 1198 DAG size of output: 1196 [2019-10-07 15:13:20,416 WARN L191 SmtUtils]: Spent 818.00 ms on a formula simplification that was a NOOP. DAG size: 1196 [2019-10-07 15:13:20,627 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 579 [2019-10-07 15:13:21,455 WARN L191 SmtUtils]: Spent 825.00 ms on a formula simplification that was a NOOP. DAG size: 1196 [2019-10-07 15:13:22,288 WARN L191 SmtUtils]: Spent 830.00 ms on a formula simplification that was a NOOP. DAG size: 1196 [2019-10-07 15:13:23,111 WARN L191 SmtUtils]: Spent 819.00 ms on a formula simplification that was a NOOP. DAG size: 1196 [2019-10-07 15:13:23,307 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 579 [2019-10-07 15:13:24,123 WARN L191 SmtUtils]: Spent 814.00 ms on a formula simplification that was a NOOP. DAG size: 1196 [2019-10-07 15:13:24,950 WARN L191 SmtUtils]: Spent 818.00 ms on a formula simplification that was a NOOP. DAG size: 1194 [2019-10-07 15:13:25,769 WARN L191 SmtUtils]: Spent 816.00 ms on a formula simplification that was a NOOP. DAG size: 1194 [2019-10-07 15:13:25,969 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 579 [2019-10-07 15:13:26,793 WARN L191 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 1196 [2019-10-07 15:13:27,606 WARN L191 SmtUtils]: Spent 809.00 ms on a formula simplification that was a NOOP. DAG size: 1196 [2019-10-07 15:13:28,419 WARN L191 SmtUtils]: Spent 810.00 ms on a formula simplification that was a NOOP. DAG size: 1196 [2019-10-07 15:13:28,620 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 579 [2019-10-07 15:13:29,439 WARN L191 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 1198 [2019-10-07 15:13:31,695 WARN L191 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 1194 DAG size of output: 1192 [2019-10-07 15:13:32,520 WARN L191 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:32,720 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:13:33,538 WARN L191 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:35,330 WARN L191 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 1194 DAG size of output: 1192 [2019-10-07 15:13:36,154 WARN L191 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:36,361 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:13:37,186 WARN L191 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:38,009 WARN L191 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:38,833 WARN L191 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:39,029 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:13:39,854 WARN L191 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:41,377 WARN L191 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 1194 DAG size of output: 1192 [2019-10-07 15:13:42,213 WARN L191 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:42,417 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:13:43,241 WARN L191 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:44,735 WARN L191 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 1194 DAG size of output: 1192 [2019-10-07 15:13:45,556 WARN L191 SmtUtils]: Spent 817.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:45,760 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:13:46,588 WARN L191 SmtUtils]: Spent 826.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:47,430 WARN L191 SmtUtils]: Spent 838.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:48,253 WARN L191 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:48,449 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 576 [2019-10-07 15:13:49,272 WARN L191 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 1192 [2019-10-07 15:13:50,539 WARN L191 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 1198 DAG size of output: 1194 [2019-10-07 15:13:51,369 WARN L191 SmtUtils]: Spent 826.00 ms on a formula simplification that was a NOOP. DAG size: 1194 [2019-10-07 15:13:51,577 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 579 [2019-10-07 15:13:52,401 WARN L191 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 1196 [2019-10-07 15:13:53,689 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1198 DAG size of output: 1194 [2019-10-07 15:13:54,508 WARN L191 SmtUtils]: Spent 815.00 ms on a formula simplification that was a NOOP. DAG size: 1194 [2019-10-07 15:13:54,718 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 579 [2019-10-07 15:13:55,537 WARN L191 SmtUtils]: Spent 816.00 ms on a formula simplification that was a NOOP. DAG size: 1196 [2019-10-07 15:13:56,361 WARN L191 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 1194 [2019-10-07 15:13:57,190 WARN L191 SmtUtils]: Spent 825.00 ms on a formula simplification that was a NOOP. DAG size: 1194 [2019-10-07 15:13:57,389 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 579 [2019-10-07 15:13:58,210 WARN L191 SmtUtils]: Spent 819.00 ms on a formula simplification that was a NOOP. DAG size: 1196 [2019-10-07 15:13:59,530 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1198 DAG size of output: 1194 [2019-10-07 15:14:00,346 WARN L191 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 1194 [2019-10-07 15:14:00,575 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 579 [2019-10-07 15:14:01,392 WARN L191 SmtUtils]: Spent 815.00 ms on a formula simplification that was a NOOP. DAG size: 1196 [2019-10-07 15:14:02,808 WARN L191 SmtUtils]: Spent 1.41 s on a formula simplification. DAG size of input: 1200 DAG size of output: 1196 [2019-10-07 15:14:03,631 WARN L191 SmtUtils]: Spent 818.00 ms on a formula simplification that was a NOOP. DAG size: 1196 [2019-10-07 15:14:03,835 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 579 [2019-10-07 15:14:04,657 WARN L191 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 1198 [2019-10-07 15:14:04,922 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:14:04,923 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 15:14:04,931 INFO L168 Benchmark]: Toolchain (without parser) took 178579.99 ms. Allocated memory was 143.7 MB in the beginning and 718.3 MB in the end (delta: 574.6 MB). Free memory was 97.8 MB in the beginning and 280.8 MB in the end (delta: -183.0 MB). Peak memory consumption was 391.6 MB. Max. memory is 7.1 GB. [2019-10-07 15:14:04,932 INFO L168 Benchmark]: CDTParser took 1.38 ms. Allocated memory is still 143.7 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-07 15:14:04,932 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1212.58 ms. Allocated memory was 143.7 MB in the beginning and 201.9 MB in the end (delta: 58.2 MB). Free memory was 97.5 MB in the beginning and 136.4 MB in the end (delta: -38.8 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2019-10-07 15:14:04,933 INFO L168 Benchmark]: Boogie Preprocessor took 184.46 ms. Allocated memory is still 201.9 MB. Free memory was 136.4 MB in the beginning and 127.9 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 7.1 GB. [2019-10-07 15:14:04,934 INFO L168 Benchmark]: RCFGBuilder took 4390.47 ms. Allocated memory was 201.9 MB in the beginning and 306.7 MB in the end (delta: 104.9 MB). Free memory was 127.2 MB in the beginning and 121.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 110.2 MB. Max. memory is 7.1 GB. [2019-10-07 15:14:04,935 INFO L168 Benchmark]: TraceAbstraction took 172787.99 ms. Allocated memory was 306.7 MB in the beginning and 718.3 MB in the end (delta: 411.6 MB). Free memory was 121.8 MB in the beginning and 280.8 MB in the end (delta: -159.0 MB). Peak memory consumption was 252.6 MB. Max. memory is 7.1 GB. [2019-10-07 15:14:04,938 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.38 ms. Allocated memory is still 143.7 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1212.58 ms. Allocated memory was 143.7 MB in the beginning and 201.9 MB in the end (delta: 58.2 MB). Free memory was 97.5 MB in the beginning and 136.4 MB in the end (delta: -38.8 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 184.46 ms. Allocated memory is still 201.9 MB. Free memory was 136.4 MB in the beginning and 127.9 MB in the end (delta: 8.5 MB). Peak memory consumption was 8.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4390.47 ms. Allocated memory was 201.9 MB in the beginning and 306.7 MB in the end (delta: 104.9 MB). Free memory was 127.2 MB in the beginning and 121.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 110.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 172787.99 ms. Allocated memory was 306.7 MB in the beginning and 718.3 MB in the end (delta: 411.6 MB). Free memory was 121.8 MB in the beginning and 280.8 MB in the end (delta: -159.0 MB). Peak memory consumption was 252.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...