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_spec4_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:10:00,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:10:00,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:10:00,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:10:00,226 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:10:00,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:10:00,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:10:00,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:10:00,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:10:00,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:10:00,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:10:00,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:10:00,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:10:00,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:10:00,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:10:00,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:10:00,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:10:00,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:10:00,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:10:00,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:10:00,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:10:00,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:10:00,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:10:00,277 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:10:00,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:10:00,281 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:10:00,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:10:00,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:10:00,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:10:00,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:10:00,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:10:00,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:10:00,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:10:00,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:10:00,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:10:00,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:10:00,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:10:00,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:10:00,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:10:00,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:10:00,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:10:00,297 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:10:00,332 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:10:00,332 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:10:00,333 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:10:00,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:10:00,334 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:10:00,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:10:00,336 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:10:00,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:10:00,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:10:00,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:10:00,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:10:00,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:10:00,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:10:00,338 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:10:00,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:10:00,338 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:10:00,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:10:00,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:10:00,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:10:00,339 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:10:00,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:10:00,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:10:00,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:10:00,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:10:00,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:10:00,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:10:00,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:10:00,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:10:00,341 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 [2019-10-13 23:10:00,647 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:10:00,668 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:10:00,672 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:10:00,673 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:10:00,673 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:10:00,674 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product19.cil.c [2019-10-13 23:10:00,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67ac91b86/50c0d455842e4d58bcba25d38fa6509d/FLAG8e65cb3b7 [2019-10-13 23:10:01,355 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:10:01,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product19.cil.c [2019-10-13 23:10:01,399 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67ac91b86/50c0d455842e4d58bcba25d38fa6509d/FLAG8e65cb3b7 [2019-10-13 23:10:01,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67ac91b86/50c0d455842e4d58bcba25d38fa6509d [2019-10-13 23:10:01,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:10:01,613 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:10:01,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:10:01,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:10:01,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:10:01,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:10:01" (1/1) ... [2019-10-13 23:10:01,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21180631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:01, skipping insertion in model container [2019-10-13 23:10:01,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:10:01" (1/1) ... [2019-10-13 23:10:01,662 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:10:01,746 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:10:02,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:10:02,557 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:10:02,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:10:02,816 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:10:02,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:02 WrapperNode [2019-10-13 23:10:02,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:10:02,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:10:02,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:10:02,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:10:02,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:02" (1/1) ... [2019-10-13 23:10:02,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:02" (1/1) ... [2019-10-13 23:10:02,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:02" (1/1) ... [2019-10-13 23:10:02,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:02" (1/1) ... [2019-10-13 23:10:02,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:02" (1/1) ... [2019-10-13 23:10:02,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:02" (1/1) ... [2019-10-13 23:10:02,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:02" (1/1) ... [2019-10-13 23:10:03,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:10:03,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:10:03,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:10:03,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:10:03,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:10:03,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:10:03,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:10:03,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:10:03,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:10:03,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-10-13 23:10:03,074 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:10:03,075 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:10:03,075 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:10:03,075 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:10:03,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:10:03,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:10:03,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:10:03,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:10:03,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:10:03,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:10:03,077 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 23:10:03,077 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 23:10:03,077 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 23:10:03,077 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 23:10:03,077 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 23:10:03,078 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 23:10:03,078 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 23:10:03,079 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 23:10:03,079 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:10:03,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:10:03,079 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 23:10:03,079 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 23:10:03,080 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 23:10:03,080 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 23:10:03,080 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 23:10:03,080 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 23:10:03,080 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 23:10:03,081 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 23:10:03,081 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 23:10:03,081 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 23:10:03,081 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:10:03,081 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 23:10:03,082 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 23:10:03,082 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 23:10:03,082 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 23:10:03,082 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 23:10:03,082 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 23:10:03,082 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 23:10:03,082 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 23:10:03,082 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 23:10:03,083 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 23:10:03,083 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 23:10:03,083 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 23:10:03,083 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 23:10:03,083 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 23:10:03,083 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 23:10:03,083 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 23:10:03,083 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 23:10:03,084 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 23:10:03,084 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 23:10:03,084 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 23:10:03,084 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 23:10:03,084 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 23:10:03,085 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 23:10:03,085 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 23:10:03,085 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 23:10:03,085 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 23:10:03,085 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 23:10:03,086 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 23:10:03,086 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 23:10:03,086 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 23:10:03,086 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 23:10:03,086 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 23:10:03,086 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 23:10:03,087 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 23:10:03,087 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 23:10:03,087 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 23:10:03,087 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 23:10:03,087 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 23:10:03,088 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 23:10:03,088 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 23:10:03,088 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 23:10:03,088 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 23:10:03,088 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 23:10:03,089 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 23:10:03,089 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 23:10:03,089 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 23:10:03,089 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 23:10:03,089 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 23:10:03,089 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 23:10:03,090 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 23:10:03,090 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 23:10:03,090 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 23:10:03,090 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 23:10:03,090 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 23:10:03,091 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 23:10:03,091 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 23:10:03,091 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 23:10:03,091 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 23:10:03,091 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 23:10:03,091 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 23:10:03,092 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 23:10:03,092 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 23:10:03,092 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 23:10:03,092 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 23:10:03,092 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 23:10:03,092 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 23:10:03,093 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 23:10:03,093 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 23:10:03,093 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 23:10:03,093 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 23:10:03,093 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 23:10:03,094 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 23:10:03,094 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 23:10:03,094 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 23:10:03,094 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 23:10:03,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:10:03,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:10:03,095 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:10:03,095 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 23:10:03,095 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 23:10:03,095 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 23:10:03,095 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-10-13 23:10:03,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:10:03,096 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:10:03,096 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:10:03,096 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:10:03,096 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:10:03,097 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:10:03,097 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:10:03,097 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:10:03,097 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:10:03,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:10:03,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:10:03,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:10:03,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:10:03,098 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:10:03,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:10:03,099 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:10:03,099 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:10:03,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:10:03,099 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:10:03,099 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:10:03,099 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:10:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:10:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 23:10:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 23:10:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 23:10:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 23:10:03,100 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 23:10:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 23:10:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 23:10:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 23:10:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 23:10:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 23:10:03,101 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 23:10:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 23:10:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 23:10:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 23:10:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 23:10:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 23:10:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 23:10:03,102 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 23:10:03,103 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 23:10:03,103 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:10:03,103 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:10:03,103 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:10:03,103 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 23:10:03,103 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 23:10:03,103 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 23:10:03,103 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 23:10:03,104 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 23:10:03,104 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 23:10:03,104 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 23:10:03,104 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 23:10:03,104 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 23:10:03,104 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 23:10:03,104 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 23:10:03,104 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 23:10:03,105 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 23:10:03,105 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 23:10:03,105 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 23:10:03,105 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 23:10:03,105 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 23:10:03,105 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 23:10:03,105 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 23:10:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 23:10:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 23:10:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 23:10:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 23:10:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 23:10:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 23:10:03,106 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 23:10:03,107 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 23:10:03,107 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 23:10:03,107 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 23:10:03,107 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 23:10:03,107 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 23:10:03,107 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 23:10:03,107 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 23:10:03,107 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 23:10:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 23:10:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 23:10:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 23:10:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 23:10:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 23:10:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 23:10:03,108 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 23:10:03,109 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 23:10:03,109 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 23:10:03,109 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 23:10:03,109 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 23:10:03,109 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 23:10:03,109 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 23:10:03,109 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 23:10:03,109 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 23:10:03,110 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 23:10:03,110 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 23:10:03,110 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 23:10:03,110 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 23:10:03,110 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 23:10:03,110 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 23:10:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 23:10:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 23:10:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 23:10:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 23:10:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 23:10:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 23:10:03,111 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 23:10:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 23:10:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 23:10:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 23:10:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 23:10:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 23:10:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 23:10:03,112 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 23:10:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 23:10:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 23:10:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 23:10:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:10:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:10:03,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:10:07,458 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:10:07,460 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 23:10:07,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:10:07 BoogieIcfgContainer [2019-10-13 23:10:07,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:10:07,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:10:07,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:10:07,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:10:07,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:10:01" (1/3) ... [2019-10-13 23:10:07,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee5ae8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:10:07, skipping insertion in model container [2019-10-13 23:10:07,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:02" (2/3) ... [2019-10-13 23:10:07,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee5ae8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:10:07, skipping insertion in model container [2019-10-13 23:10:07,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:10:07" (3/3) ... [2019-10-13 23:10:07,472 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product19.cil.c [2019-10-13 23:10:07,482 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:10:07,492 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:10:07,503 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:10:07,553 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:10:07,553 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:10:07,554 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:10:07,554 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:10:07,554 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:10:07,554 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:10:07,554 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:10:07,554 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:10:07,593 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states. [2019-10-13 23:10:07,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-10-13 23:10:07,620 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:07,621 INFO L380 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] [2019-10-13 23:10:07,623 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:07,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:07,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1973730850, now seen corresponding path program 1 times [2019-10-13 23:10:07,638 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:07,638 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577608331] [2019-10-13 23:10:07,639 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:07,639 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:07,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:08,328 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:10:08,329 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577608331] [2019-10-13 23:10:08,330 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:10:08,330 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:10:08,330 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417390573] [2019-10-13 23:10:08,335 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:10:08,336 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:10:08,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:10:08,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:10:08,353 INFO L87 Difference]: Start difference. First operand 359 states. Second operand 2 states. [2019-10-13 23:10:08,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:10:08,443 INFO L93 Difference]: Finished difference Result 526 states and 613 transitions. [2019-10-13 23:10:08,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:10:08,445 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 118 [2019-10-13 23:10:08,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:10:08,464 INFO L225 Difference]: With dead ends: 526 [2019-10-13 23:10:08,464 INFO L226 Difference]: Without dead ends: 338 [2019-10-13 23:10:08,470 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:10:08,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2019-10-13 23:10:08,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2019-10-13 23:10:08,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2019-10-13 23:10:08,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 395 transitions. [2019-10-13 23:10:08,550 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 395 transitions. Word has length 118 [2019-10-13 23:10:08,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:10:08,552 INFO L462 AbstractCegarLoop]: Abstraction has 338 states and 395 transitions. [2019-10-13 23:10:08,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:10:08,552 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 395 transitions. [2019-10-13 23:10:08,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 23:10:08,557 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:08,558 INFO L380 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] [2019-10-13 23:10:08,558 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:08,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:08,559 INFO L82 PathProgramCache]: Analyzing trace with hash 80777011, now seen corresponding path program 1 times [2019-10-13 23:10:08,559 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:08,559 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537558808] [2019-10-13 23:10:08,559 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:08,559 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:08,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:08,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:08,813 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:10:08,814 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537558808] [2019-10-13 23:10:08,814 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:10:08,814 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:10:08,814 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094730202] [2019-10-13 23:10:08,816 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:10:08,817 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:10:08,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:10:08,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:10:08,818 INFO L87 Difference]: Start difference. First operand 338 states and 395 transitions. Second operand 3 states. [2019-10-13 23:10:08,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:10:08,897 INFO L93 Difference]: Finished difference Result 511 states and 585 transitions. [2019-10-13 23:10:08,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:10:08,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-13 23:10:08,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:10:08,907 INFO L225 Difference]: With dead ends: 511 [2019-10-13 23:10:08,908 INFO L226 Difference]: Without dead ends: 340 [2019-10-13 23:10:08,913 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:10:08,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2019-10-13 23:10:08,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2019-10-13 23:10:08,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2019-10-13 23:10:08,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 397 transitions. [2019-10-13 23:10:08,960 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 397 transitions. Word has length 119 [2019-10-13 23:10:08,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:10:08,961 INFO L462 AbstractCegarLoop]: Abstraction has 340 states and 397 transitions. [2019-10-13 23:10:08,961 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:10:08,961 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 397 transitions. [2019-10-13 23:10:08,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-13 23:10:08,969 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:08,970 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:10:08,970 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:08,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:08,971 INFO L82 PathProgramCache]: Analyzing trace with hash 1118901664, now seen corresponding path program 1 times [2019-10-13 23:10:08,971 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:08,971 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226508751] [2019-10-13 23:10:08,972 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:08,972 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:08,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:09,167 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:10:09,167 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226508751] [2019-10-13 23:10:09,168 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:10:09,168 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:10:09,168 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699186534] [2019-10-13 23:10:09,169 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:10:09,169 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:10:09,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:10:09,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:10:09,170 INFO L87 Difference]: Start difference. First operand 340 states and 397 transitions. Second operand 3 states. [2019-10-13 23:10:09,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:10:09,205 INFO L93 Difference]: Finished difference Result 662 states and 801 transitions. [2019-10-13 23:10:09,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:10:09,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2019-10-13 23:10:09,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:10:09,210 INFO L225 Difference]: With dead ends: 662 [2019-10-13 23:10:09,211 INFO L226 Difference]: Without dead ends: 380 [2019-10-13 23:10:09,212 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:10:09,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2019-10-13 23:10:09,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 379. [2019-10-13 23:10:09,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2019-10-13 23:10:09,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 465 transitions. [2019-10-13 23:10:09,239 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 465 transitions. Word has length 124 [2019-10-13 23:10:09,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:10:09,240 INFO L462 AbstractCegarLoop]: Abstraction has 379 states and 465 transitions. [2019-10-13 23:10:09,240 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:10:09,240 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 465 transitions. [2019-10-13 23:10:09,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-13 23:10:09,243 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:09,244 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:10:09,244 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:09,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:09,245 INFO L82 PathProgramCache]: Analyzing trace with hash -127152052, now seen corresponding path program 1 times [2019-10-13 23:10:09,245 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:09,245 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376284905] [2019-10-13 23:10:09,245 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:09,245 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:09,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:09,831 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 23:10:09,831 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376284905] [2019-10-13 23:10:09,831 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:10:09,832 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-10-13 23:10:09,832 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210739433] [2019-10-13 23:10:09,832 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-13 23:10:09,833 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:10:09,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-13 23:10:09,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2019-10-13 23:10:09,838 INFO L87 Difference]: Start difference. First operand 379 states and 465 transitions. Second operand 19 states. [2019-10-13 23:10:16,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:10:16,493 INFO L93 Difference]: Finished difference Result 728 states and 854 transitions. [2019-10-13 23:10:16,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-13 23:10:16,494 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 125 [2019-10-13 23:10:16,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:10:16,499 INFO L225 Difference]: With dead ends: 728 [2019-10-13 23:10:16,499 INFO L226 Difference]: Without dead ends: 553 [2019-10-13 23:10:16,501 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=1231, Unknown=0, NotChecked=0, Total=1406 [2019-10-13 23:10:16,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2019-10-13 23:10:16,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 546. [2019-10-13 23:10:16,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 546 states. [2019-10-13 23:10:16,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 651 transitions. [2019-10-13 23:10:16,538 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 651 transitions. Word has length 125 [2019-10-13 23:10:16,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:10:16,539 INFO L462 AbstractCegarLoop]: Abstraction has 546 states and 651 transitions. [2019-10-13 23:10:16,539 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-13 23:10:16,539 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 651 transitions. [2019-10-13 23:10:16,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-13 23:10:16,542 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:16,542 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:10:16,543 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:16,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:16,543 INFO L82 PathProgramCache]: Analyzing trace with hash -2091812765, now seen corresponding path program 1 times [2019-10-13 23:10:16,543 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:16,544 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302013157] [2019-10-13 23:10:16,544 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:16,544 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:16,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:17,013 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 23:10:17,014 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302013157] [2019-10-13 23:10:17,014 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:10:17,015 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2019-10-13 23:10:17,015 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522941423] [2019-10-13 23:10:17,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-10-13 23:10:17,016 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:10:17,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-10-13 23:10:17,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2019-10-13 23:10:17,017 INFO L87 Difference]: Start difference. First operand 546 states and 651 transitions. Second operand 21 states. [2019-10-13 23:10:18,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:10:18,378 INFO L93 Difference]: Finished difference Result 595 states and 702 transitions. [2019-10-13 23:10:18,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-13 23:10:18,379 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 131 [2019-10-13 23:10:18,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:10:18,387 INFO L225 Difference]: With dead ends: 595 [2019-10-13 23:10:18,387 INFO L226 Difference]: Without dead ends: 573 [2019-10-13 23:10:18,389 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=193, Invalid=1613, Unknown=0, NotChecked=0, Total=1806 [2019-10-13 23:10:18,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2019-10-13 23:10:18,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 568. [2019-10-13 23:10:18,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2019-10-13 23:10:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 671 transitions. [2019-10-13 23:10:18,438 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 671 transitions. Word has length 131 [2019-10-13 23:10:18,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:10:18,439 INFO L462 AbstractCegarLoop]: Abstraction has 568 states and 671 transitions. [2019-10-13 23:10:18,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-10-13 23:10:18,439 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 671 transitions. [2019-10-13 23:10:18,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-10-13 23:10:18,446 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:18,446 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 23:10:18,446 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:18,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:18,447 INFO L82 PathProgramCache]: Analyzing trace with hash 2107711952, now seen corresponding path program 1 times [2019-10-13 23:10:18,447 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:18,447 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814003622] [2019-10-13 23:10:18,447 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:18,448 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:18,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:18,663 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 23:10:18,664 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814003622] [2019-10-13 23:10:18,665 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:10:18,665 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 23:10:18,665 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327050032] [2019-10-13 23:10:18,666 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:10:18,666 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:10:18,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:10:18,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:10:18,667 INFO L87 Difference]: Start difference. First operand 568 states and 671 transitions. Second operand 8 states. [2019-10-13 23:10:18,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:10:18,726 INFO L93 Difference]: Finished difference Result 813 states and 924 transitions. [2019-10-13 23:10:18,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:10:18,726 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 211 [2019-10-13 23:10:18,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:10:18,730 INFO L225 Difference]: With dead ends: 813 [2019-10-13 23:10:18,731 INFO L226 Difference]: Without dead ends: 568 [2019-10-13 23:10:18,732 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:10:18,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2019-10-13 23:10:18,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2019-10-13 23:10:18,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2019-10-13 23:10:18,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 669 transitions. [2019-10-13 23:10:18,767 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 669 transitions. Word has length 211 [2019-10-13 23:10:18,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:10:18,768 INFO L462 AbstractCegarLoop]: Abstraction has 568 states and 669 transitions. [2019-10-13 23:10:18,768 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:10:18,768 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 669 transitions. [2019-10-13 23:10:18,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-10-13 23:10:18,772 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:18,773 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-13 23:10:18,773 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:18,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:18,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1220567418, now seen corresponding path program 1 times [2019-10-13 23:10:18,774 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:18,774 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819966945] [2019-10-13 23:10:18,774 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:18,774 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:18,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 23:10:19,104 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819966945] [2019-10-13 23:10:19,105 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:10:19,105 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 23:10:19,105 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385355661] [2019-10-13 23:10:19,106 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 23:10:19,106 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:10:19,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 23:10:19,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-10-13 23:10:19,107 INFO L87 Difference]: Start difference. First operand 568 states and 669 transitions. Second operand 11 states. [2019-10-13 23:10:21,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:10:21,594 INFO L93 Difference]: Finished difference Result 715 states and 815 transitions. [2019-10-13 23:10:21,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:10:21,595 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 216 [2019-10-13 23:10:21,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:10:21,599 INFO L225 Difference]: With dead ends: 715 [2019-10-13 23:10:21,599 INFO L226 Difference]: Without dead ends: 592 [2019-10-13 23:10:21,600 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2019-10-13 23:10:21,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2019-10-13 23:10:21,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 543. [2019-10-13 23:10:21,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2019-10-13 23:10:21,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 634 transitions. [2019-10-13 23:10:21,642 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 634 transitions. Word has length 216 [2019-10-13 23:10:21,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:10:21,645 INFO L462 AbstractCegarLoop]: Abstraction has 543 states and 634 transitions. [2019-10-13 23:10:21,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 23:10:21,645 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 634 transitions. [2019-10-13 23:10:21,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2019-10-13 23:10:21,651 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:21,651 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:10:21,651 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:21,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:21,652 INFO L82 PathProgramCache]: Analyzing trace with hash -502005642, now seen corresponding path program 1 times [2019-10-13 23:10:21,652 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:21,652 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159896382] [2019-10-13 23:10:21,652 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:21,652 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:21,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:22,745 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-13 23:10:22,746 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159896382] [2019-10-13 23:10:22,746 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922424840] [2019-10-13 23:10:22,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:10:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:23,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 3004 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:10:23,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:10:23,620 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-10-13 23:10:23,621 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:10:24,334 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-13 23:10:24,335 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1485657449] [2019-10-13 23:10:24,370 INFO L162 IcfgInterpreter]: Started Sifa with 212 locations of interest [2019-10-13 23:10:24,370 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:10:24,378 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:10:24,385 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:10:24,386 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs