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_spec6_product12.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:10:41,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:10:41,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:10:41,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:10:41,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:10:41,548 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:10:41,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:10:41,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:10:41,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:10:41,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:10:41,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:10:41,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:10:41,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:10:41,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:10:41,574 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:10:41,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:10:41,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:10:41,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:10:41,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:10:41,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:10:41,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:10:41,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:10:41,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:10:41,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:10:41,597 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:10:41,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:10:41,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:10:41,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:10:41,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:10:41,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:10:41,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:10:41,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:10:41,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:10:41,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:10:41,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:10:41,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:10:41,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:10:41,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:10:41,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:10:41,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:10:41,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:10:41,611 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 23:10:41,638 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:10:41,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:10:41,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:10:41,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:10:41,640 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:10:41,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:10:41,640 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:10:41,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:10:41,641 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:10:41,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:10:41,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:10:41,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:10:41,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:10:41,642 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:10:41,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:10:41,642 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:10:41,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:10:41,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:10:41,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:10:41,643 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:10:41,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:10:41,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:10:41,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:10:41,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:10:41,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:10:41,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:10:41,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:10:41,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:10:41,644 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 23:10:41,936 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:10:41,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:10:41,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:10:41,968 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:10:41,968 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:10:41,969 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec6_product12.cil.c [2019-10-13 23:10:42,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f33eba374/828f90fcfbf44e47b2c2d3eaca3e7ed1/FLAG1f6caabca [2019-10-13 23:10:42,716 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:10:42,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product12.cil.c [2019-10-13 23:10:42,748 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f33eba374/828f90fcfbf44e47b2c2d3eaca3e7ed1/FLAG1f6caabca [2019-10-13 23:10:42,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f33eba374/828f90fcfbf44e47b2c2d3eaca3e7ed1 [2019-10-13 23:10:42,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:10:42,904 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:10:42,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:10:42,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:10:42,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:10:42,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:10:42" (1/1) ... [2019-10-13 23:10:42,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63127057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:42, skipping insertion in model container [2019-10-13 23:10:42,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:10:42" (1/1) ... [2019-10-13 23:10:42,920 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:10:42,987 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:10:43,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:10:43,863 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:10:44,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:10:44,112 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:10:44,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:44 WrapperNode [2019-10-13 23:10:44,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:10:44,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:10:44,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:10:44,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:10:44,130 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:44" (1/1) ... [2019-10-13 23:10:44,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:44" (1/1) ... [2019-10-13 23:10:44,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:44" (1/1) ... [2019-10-13 23:10:44,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:44" (1/1) ... [2019-10-13 23:10:44,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:44" (1/1) ... [2019-10-13 23:10:44,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:44" (1/1) ... [2019-10-13 23:10:44,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:44" (1/1) ... [2019-10-13 23:10:44,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:10:44,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:10:44,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:10:44,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:10:44,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:44" (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 23:10:44,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:10:44,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:10:44,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:10:44,406 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:10:44,406 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:10:44,407 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:10:44,408 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:10:44,408 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 23:10:44,408 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 23:10:44,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 23:10:44,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 23:10:44,409 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 23:10:44,409 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 23:10:44,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:10:44,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:10:44,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:10:44,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:10:44,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:10:44,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:10:44,411 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 23:10:44,411 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 23:10:44,412 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 23:10:44,412 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 23:10:44,412 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 23:10:44,412 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 23:10:44,412 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 23:10:44,413 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 23:10:44,413 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:10:44,413 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:10:44,413 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 23:10:44,413 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 23:10:44,413 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 23:10:44,413 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 23:10:44,414 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 23:10:44,414 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 23:10:44,414 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 23:10:44,414 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 23:10:44,414 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 23:10:44,414 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 23:10:44,415 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 23:10:44,415 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 23:10:44,415 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 23:10:44,415 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 23:10:44,415 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 23:10:44,416 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 23:10:44,416 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 23:10:44,416 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 23:10:44,416 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 23:10:44,416 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 23:10:44,416 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 23:10:44,417 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 23:10:44,417 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 23:10:44,417 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 23:10:44,417 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 23:10:44,417 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 23:10:44,417 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 23:10:44,418 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 23:10:44,418 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 23:10:44,418 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 23:10:44,418 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 23:10:44,418 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 23:10:44,419 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 23:10:44,419 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 23:10:44,419 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 23:10:44,419 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 23:10:44,419 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 23:10:44,419 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 23:10:44,420 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 23:10:44,420 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 23:10:44,420 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 23:10:44,420 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 23:10:44,420 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 23:10:44,421 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 23:10:44,421 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 23:10:44,421 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 23:10:44,421 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 23:10:44,421 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 23:10:44,421 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 23:10:44,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 23:10:44,422 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 23:10:44,422 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 23:10:44,422 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 23:10:44,422 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 23:10:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 23:10:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 23:10:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 23:10:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 23:10:44,423 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 23:10:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:10:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 23:10:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 23:10:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 23:10:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 23:10:44,424 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 23:10:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 23:10:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 23:10:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 23:10:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 23:10:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 23:10:44,425 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 23:10:44,426 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 23:10:44,426 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 23:10:44,426 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 23:10:44,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptDecrypt_spec__1 [2019-10-13 23:10:44,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptDecrypt_spec__2 [2019-10-13 23:10:44,426 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 23:10:44,427 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:10:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:10:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:10:44,427 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:10:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:10:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:10:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:10:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:10:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 23:10:44,428 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 23:10:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 23:10:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 23:10:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 23:10:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 23:10:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 23:10:44,429 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 23:10:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 23:10:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 23:10:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 23:10:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 23:10:44,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:10:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 23:10:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:10:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:10:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:10:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:10:44,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:10:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:10:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:10:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:10:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:10:44,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:10:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:10:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:10:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:10:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:10:44,433 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:10:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:10:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 23:10:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 23:10:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 23:10:44,434 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 23:10:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 23:10:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 23:10:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 23:10:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 23:10:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 23:10:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 23:10:44,435 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 23:10:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 23:10:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 23:10:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 23:10:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 23:10:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 23:10:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 23:10:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 23:10:44,436 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 23:10:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:10:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:10:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:10:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 23:10:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 23:10:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 23:10:44,437 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 23:10:44,438 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 23:10:44,438 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 23:10:44,438 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 23:10:44,438 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 23:10:44,438 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 23:10:44,438 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 23:10:44,438 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 23:10:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 23:10:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 23:10:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 23:10:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 23:10:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 23:10:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 23:10:44,439 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 23:10:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 23:10:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 23:10:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 23:10:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 23:10:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 23:10:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 23:10:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 23:10:44,440 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 23:10:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 23:10:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 23:10:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 23:10:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 23:10:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 23:10:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 23:10:44,441 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 23:10:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 23:10:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 23:10:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 23:10:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 23:10:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 23:10:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 23:10:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 23:10:44,442 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 23:10:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 23:10:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 23:10:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 23:10:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 23:10:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 23:10:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 23:10:44,443 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 23:10:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:10:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 23:10:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 23:10:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 23:10:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 23:10:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 23:10:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 23:10:44,445 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptDecrypt_spec__1 [2019-10-13 23:10:44,445 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 23:10:44,445 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 23:10:44,445 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptDecrypt_spec__2 [2019-10-13 23:10:44,445 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 23:10:44,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:10:44,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:10:44,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:10:48,806 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:10:48,806 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 23:10:48,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:10:48 BoogieIcfgContainer [2019-10-13 23:10:48,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:10:48,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:10:48,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:10:48,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:10:48,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:10:42" (1/3) ... [2019-10-13 23:10:48,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62126f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:10:48, skipping insertion in model container [2019-10-13 23:10:48,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:10:44" (2/3) ... [2019-10-13 23:10:48,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62126f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:10:48, skipping insertion in model container [2019-10-13 23:10:48,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:10:48" (3/3) ... [2019-10-13 23:10:48,818 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec6_product12.cil.c [2019-10-13 23:10:48,829 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:10:48,840 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:10:48,851 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:10:48,890 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:10:48,890 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:10:48,890 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:10:48,890 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:10:48,890 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:10:48,891 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:10:48,891 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:10:48,891 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:10:48,918 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states. [2019-10-13 23:10:48,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2019-10-13 23:10:48,936 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:48,938 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:10:48,940 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:48,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:48,946 INFO L82 PathProgramCache]: Analyzing trace with hash -73053180, now seen corresponding path program 1 times [2019-10-13 23:10:48,956 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:48,956 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322243022] [2019-10-13 23:10:48,957 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:48,957 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:48,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:49,608 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 23:10:49,608 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322243022] [2019-10-13 23:10:49,609 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:10:49,610 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:10:49,610 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505041380] [2019-10-13 23:10:49,618 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:10:49,626 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:10:49,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:10:49,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:10:49,640 INFO L87 Difference]: Start difference. First operand 318 states. Second operand 2 states. [2019-10-13 23:10:49,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:10:49,693 INFO L93 Difference]: Finished difference Result 413 states and 495 transitions. [2019-10-13 23:10:49,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:10:49,695 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 136 [2019-10-13 23:10:49,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:10:49,717 INFO L225 Difference]: With dead ends: 413 [2019-10-13 23:10:49,717 INFO L226 Difference]: Without dead ends: 278 [2019-10-13 23:10:49,726 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 23:10:49,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2019-10-13 23:10:49,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2019-10-13 23:10:49,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-10-13 23:10:49,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 332 transitions. [2019-10-13 23:10:49,833 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 332 transitions. Word has length 136 [2019-10-13 23:10:49,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:10:49,837 INFO L462 AbstractCegarLoop]: Abstraction has 278 states and 332 transitions. [2019-10-13 23:10:49,837 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:10:49,837 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 332 transitions. [2019-10-13 23:10:49,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-13 23:10:49,853 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:49,853 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:10:49,854 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:49,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:49,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1729470688, now seen corresponding path program 1 times [2019-10-13 23:10:49,854 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:49,855 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291889608] [2019-10-13 23:10:49,855 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:49,855 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:49,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:50,100 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 23:10:50,100 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291889608] [2019-10-13 23:10:50,100 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:10:50,101 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:10:50,101 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164349389] [2019-10-13 23:10:50,103 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:10:50,103 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:10:50,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:10:50,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:10:50,104 INFO L87 Difference]: Start difference. First operand 278 states and 332 transitions. Second operand 3 states. [2019-10-13 23:10:50,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:10:50,216 INFO L93 Difference]: Finished difference Result 398 states and 466 transitions. [2019-10-13 23:10:50,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:10:50,219 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2019-10-13 23:10:50,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:10:50,223 INFO L225 Difference]: With dead ends: 398 [2019-10-13 23:10:50,223 INFO L226 Difference]: Without dead ends: 280 [2019-10-13 23:10:50,225 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 23:10:50,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2019-10-13 23:10:50,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2019-10-13 23:10:50,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2019-10-13 23:10:50,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 334 transitions. [2019-10-13 23:10:50,264 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 334 transitions. Word has length 137 [2019-10-13 23:10:50,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:10:50,265 INFO L462 AbstractCegarLoop]: Abstraction has 280 states and 334 transitions. [2019-10-13 23:10:50,265 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:10:50,265 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 334 transitions. [2019-10-13 23:10:50,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-10-13 23:10:50,268 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:50,269 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:10:50,269 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:50,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:50,269 INFO L82 PathProgramCache]: Analyzing trace with hash 729914396, now seen corresponding path program 1 times [2019-10-13 23:10:50,270 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:50,270 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934451050] [2019-10-13 23:10:50,270 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:50,270 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:50,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:50,489 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 23:10:50,489 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934451050] [2019-10-13 23:10:50,489 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:10:50,490 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:10:50,490 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301240215] [2019-10-13 23:10:50,491 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:10:50,492 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:10:50,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:10:50,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:10:50,492 INFO L87 Difference]: Start difference. First operand 280 states and 334 transitions. Second operand 3 states. [2019-10-13 23:10:50,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:10:50,560 INFO L93 Difference]: Finished difference Result 540 states and 672 transitions. [2019-10-13 23:10:50,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:10:50,561 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2019-10-13 23:10:50,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:10:50,570 INFO L225 Difference]: With dead ends: 540 [2019-10-13 23:10:50,571 INFO L226 Difference]: Without dead ends: 318 [2019-10-13 23:10:50,575 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 23:10:50,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2019-10-13 23:10:50,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2019-10-13 23:10:50,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2019-10-13 23:10:50,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 399 transitions. [2019-10-13 23:10:50,609 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 399 transitions. Word has length 142 [2019-10-13 23:10:50,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:10:50,610 INFO L462 AbstractCegarLoop]: Abstraction has 317 states and 399 transitions. [2019-10-13 23:10:50,610 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:10:50,610 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 399 transitions. [2019-10-13 23:10:50,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2019-10-13 23:10:50,613 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:50,614 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:10:50,614 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:50,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:50,614 INFO L82 PathProgramCache]: Analyzing trace with hash 134138767, now seen corresponding path program 1 times [2019-10-13 23:10:50,615 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:50,615 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049902001] [2019-10-13 23:10:50,615 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:50,615 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:50,615 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:51,295 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 23:10:51,296 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049902001] [2019-10-13 23:10:51,296 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:10:51,296 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2019-10-13 23:10:51,297 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452260131] [2019-10-13 23:10:51,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-13 23:10:51,299 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:10:51,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-13 23:10:51,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2019-10-13 23:10:51,302 INFO L87 Difference]: Start difference. First operand 317 states and 399 transitions. Second operand 22 states. [2019-10-13 23:10:56,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:10:56,408 INFO L93 Difference]: Finished difference Result 678 states and 822 transitions. [2019-10-13 23:10:56,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2019-10-13 23:10:56,409 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 143 [2019-10-13 23:10:56,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:10:56,415 INFO L225 Difference]: With dead ends: 678 [2019-10-13 23:10:56,415 INFO L226 Difference]: Without dead ends: 536 [2019-10-13 23:10:56,417 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=233, Invalid=1929, Unknown=0, NotChecked=0, Total=2162 [2019-10-13 23:10:56,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2019-10-13 23:10:56,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 527. [2019-10-13 23:10:56,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2019-10-13 23:10:56,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 633 transitions. [2019-10-13 23:10:56,462 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 633 transitions. Word has length 143 [2019-10-13 23:10:56,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:10:56,463 INFO L462 AbstractCegarLoop]: Abstraction has 527 states and 633 transitions. [2019-10-13 23:10:56,463 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-10-13 23:10:56,463 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 633 transitions. [2019-10-13 23:10:56,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-13 23:10:56,467 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:56,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:10:56,467 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:56,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:56,468 INFO L82 PathProgramCache]: Analyzing trace with hash 750693262, now seen corresponding path program 1 times [2019-10-13 23:10:56,468 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:56,468 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868339867] [2019-10-13 23:10:56,469 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:56,469 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:56,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:56,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:56,808 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 23:10:56,808 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868339867] [2019-10-13 23:10:56,809 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:10:56,809 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:10:56,809 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610544090] [2019-10-13 23:10:56,810 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:10:56,810 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:10:56,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:10:56,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:10:56,811 INFO L87 Difference]: Start difference. First operand 527 states and 633 transitions. Second operand 12 states. [2019-10-13 23:10:58,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:10:58,931 INFO L93 Difference]: Finished difference Result 1101 states and 1297 transitions. [2019-10-13 23:10:58,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 23:10:58,934 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 149 [2019-10-13 23:10:58,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:10:58,947 INFO L225 Difference]: With dead ends: 1101 [2019-10-13 23:10:58,947 INFO L226 Difference]: Without dead ends: 847 [2019-10-13 23:10:58,949 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2019-10-13 23:10:58,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2019-10-13 23:10:59,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 777. [2019-10-13 23:10:59,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 777 states. [2019-10-13 23:10:59,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 923 transitions. [2019-10-13 23:10:59,103 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 923 transitions. Word has length 149 [2019-10-13 23:10:59,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:10:59,103 INFO L462 AbstractCegarLoop]: Abstraction has 777 states and 923 transitions. [2019-10-13 23:10:59,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:10:59,104 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 923 transitions. [2019-10-13 23:10:59,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 23:10:59,107 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:59,108 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:59,108 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:59,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:59,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1988398848, now seen corresponding path program 1 times [2019-10-13 23:10:59,109 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:59,109 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920716592] [2019-10-13 23:10:59,109 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:59,109 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:59,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:59,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:59,230 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 23:10:59,230 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920716592] [2019-10-13 23:10:59,230 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:10:59,230 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:10:59,231 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229551043] [2019-10-13 23:10:59,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:10:59,231 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:10:59,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:10:59,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:10:59,232 INFO L87 Difference]: Start difference. First operand 777 states and 923 transitions. Second operand 3 states. [2019-10-13 23:10:59,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:10:59,285 INFO L93 Difference]: Finished difference Result 1602 states and 1970 transitions. [2019-10-13 23:10:59,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:10:59,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-13 23:10:59,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:10:59,292 INFO L225 Difference]: With dead ends: 1602 [2019-10-13 23:10:59,292 INFO L226 Difference]: Without dead ends: 883 [2019-10-13 23:10:59,295 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 23:10:59,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2019-10-13 23:10:59,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 881. [2019-10-13 23:10:59,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2019-10-13 23:10:59,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1105 transitions. [2019-10-13 23:10:59,347 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1105 transitions. Word has length 171 [2019-10-13 23:10:59,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:10:59,348 INFO L462 AbstractCegarLoop]: Abstraction has 881 states and 1105 transitions. [2019-10-13 23:10:59,348 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:10:59,348 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1105 transitions. [2019-10-13 23:10:59,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-13 23:10:59,352 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:59,352 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:10:59,353 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:59,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:59,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1013973423, now seen corresponding path program 1 times [2019-10-13 23:10:59,353 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:59,353 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861581867] [2019-10-13 23:10:59,354 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:59,354 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:59,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:59,468 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 23:10:59,469 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861581867] [2019-10-13 23:10:59,469 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:10:59,469 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:10:59,470 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763034671] [2019-10-13 23:10:59,470 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:10:59,470 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:10:59,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:10:59,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:10:59,471 INFO L87 Difference]: Start difference. First operand 881 states and 1105 transitions. Second operand 3 states. [2019-10-13 23:10:59,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:10:59,533 INFO L93 Difference]: Finished difference Result 1899 states and 2492 transitions. [2019-10-13 23:10:59,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:10:59,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2019-10-13 23:10:59,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:10:59,540 INFO L225 Difference]: With dead ends: 1899 [2019-10-13 23:10:59,541 INFO L226 Difference]: Without dead ends: 1076 [2019-10-13 23:10:59,544 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 23:10:59,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1076 states. [2019-10-13 23:10:59,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1076 to 1074. [2019-10-13 23:10:59,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1074 states. [2019-10-13 23:10:59,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1442 transitions. [2019-10-13 23:10:59,606 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1442 transitions. Word has length 177 [2019-10-13 23:10:59,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:10:59,606 INFO L462 AbstractCegarLoop]: Abstraction has 1074 states and 1442 transitions. [2019-10-13 23:10:59,607 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:10:59,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1442 transitions. [2019-10-13 23:10:59,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-13 23:10:59,612 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:10:59,612 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:59,612 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:10:59,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:10:59,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1997364994, now seen corresponding path program 1 times [2019-10-13 23:10:59,613 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:10:59,613 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613810529] [2019-10-13 23:10:59,613 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:59,614 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:10:59,614 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:10:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:10:59,979 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 23:10:59,979 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613810529] [2019-10-13 23:10:59,980 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:10:59,980 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:10:59,980 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788619318] [2019-10-13 23:10:59,981 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:10:59,981 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:10:59,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:10:59,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:10:59,982 INFO L87 Difference]: Start difference. First operand 1074 states and 1442 transitions. Second operand 12 states. [2019-10-13 23:11:03,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:11:03,064 INFO L93 Difference]: Finished difference Result 2463 states and 3428 transitions. [2019-10-13 23:11:03,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 23:11:03,065 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 173 [2019-10-13 23:11:03,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:11:03,081 INFO L225 Difference]: With dead ends: 2463 [2019-10-13 23:11:03,081 INFO L226 Difference]: Without dead ends: 1778 [2019-10-13 23:11:03,086 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=170, Invalid=586, Unknown=0, NotChecked=0, Total=756 [2019-10-13 23:11:03,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2019-10-13 23:11:03,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1447. [2019-10-13 23:11:03,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1447 states. [2019-10-13 23:11:03,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 2107 transitions. [2019-10-13 23:11:03,205 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 2107 transitions. Word has length 173 [2019-10-13 23:11:03,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:11:03,206 INFO L462 AbstractCegarLoop]: Abstraction has 1447 states and 2107 transitions. [2019-10-13 23:11:03,206 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:11:03,206 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 2107 transitions. [2019-10-13 23:11:03,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-10-13 23:11:03,214 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:11:03,215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:03,215 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:11:03,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:11:03,215 INFO L82 PathProgramCache]: Analyzing trace with hash 513157512, now seen corresponding path program 1 times [2019-10-13 23:11:03,216 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:11:03,216 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080399988] [2019-10-13 23:11:03,216 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:03,216 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:03,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:11:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:11:03,349 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 23:11:03,350 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080399988] [2019-10-13 23:11:03,351 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:11:03,351 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:11:03,352 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124705680] [2019-10-13 23:11:03,352 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:11:03,352 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:11:03,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:11:03,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:11:03,353 INFO L87 Difference]: Start difference. First operand 1447 states and 2107 transitions. Second operand 3 states. [2019-10-13 23:11:03,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:11:03,438 INFO L93 Difference]: Finished difference Result 3101 states and 4646 transitions. [2019-10-13 23:11:03,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:11:03,438 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2019-10-13 23:11:03,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:11:03,450 INFO L225 Difference]: With dead ends: 3101 [2019-10-13 23:11:03,450 INFO L226 Difference]: Without dead ends: 1716 [2019-10-13 23:11:03,455 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 23:11:03,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2019-10-13 23:11:03,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1715. [2019-10-13 23:11:03,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1715 states. [2019-10-13 23:11:03,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2583 transitions. [2019-10-13 23:11:03,590 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2583 transitions. Word has length 174 [2019-10-13 23:11:03,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:11:03,591 INFO L462 AbstractCegarLoop]: Abstraction has 1715 states and 2583 transitions. [2019-10-13 23:11:03,591 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:11:03,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2583 transitions. [2019-10-13 23:11:03,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-10-13 23:11:03,604 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:11:03,604 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:11:03,604 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:11:03,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:11:03,605 INFO L82 PathProgramCache]: Analyzing trace with hash -463742468, now seen corresponding path program 1 times [2019-10-13 23:11:03,605 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:11:03,605 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794748696] [2019-10-13 23:11:03,606 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:03,606 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:03,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:11:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:11:04,012 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 23:11:04,013 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794748696] [2019-10-13 23:11:04,014 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:11:04,014 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:11:04,015 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816916574] [2019-10-13 23:11:04,016 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:11:04,016 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:11:04,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:11:04,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:11:04,017 INFO L87 Difference]: Start difference. First operand 1715 states and 2583 transitions. Second operand 12 states. [2019-10-13 23:11:08,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:11:08,211 INFO L93 Difference]: Finished difference Result 3223 states and 4774 transitions. [2019-10-13 23:11:08,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-13 23:11:08,212 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 182 [2019-10-13 23:11:08,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:11:08,224 INFO L225 Difference]: With dead ends: 3223 [2019-10-13 23:11:08,224 INFO L226 Difference]: Without dead ends: 1901 [2019-10-13 23:11:08,230 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2019-10-13 23:11:08,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1901 states. [2019-10-13 23:11:08,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1901 to 1570. [2019-10-13 23:11:08,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1570 states. [2019-10-13 23:11:08,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 2314 transitions. [2019-10-13 23:11:08,358 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 2314 transitions. Word has length 182 [2019-10-13 23:11:08,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:11:08,360 INFO L462 AbstractCegarLoop]: Abstraction has 1570 states and 2314 transitions. [2019-10-13 23:11:08,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:11:08,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 2314 transitions. [2019-10-13 23:11:08,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-13 23:11:08,374 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:11:08,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:11:08,375 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:11:08,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:11:08,375 INFO L82 PathProgramCache]: Analyzing trace with hash 938999292, now seen corresponding path program 1 times [2019-10-13 23:11:08,376 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:11:08,376 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223114456] [2019-10-13 23:11:08,376 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:08,376 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:11:08,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:11:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:11:08,860 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:11:08,861 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223114456] [2019-10-13 23:11:08,861 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154608557] [2019-10-13 23:11:08,861 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 23:11:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:11:09,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 2557 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:11:09,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:11:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:11:09,579 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:11:09,864 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 23:11:09,865 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1766221136] [2019-10-13 23:11:09,915 INFO L162 IcfgInterpreter]: Started Sifa with 164 locations of interest [2019-10-13 23:11:09,916 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:11:09,923 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:11:09,939 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:11:09,939 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs