java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/email_spec9_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:13:27,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:13:27,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:13:28,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:13:28,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:13:28,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:13:28,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:13:28,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:13:28,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:13:28,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:13:28,018 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:13:28,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:13:28,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:13:28,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:13:28,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:13:28,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:13:28,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:13:28,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:13:28,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:13:28,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:13:28,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:13:28,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:13:28,035 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:13:28,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:13:28,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:13:28,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:13:28,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:13:28,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:13:28,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:13:28,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:13:28,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:13:28,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:13:28,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:13:28,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:13:28,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:13:28,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:13:28,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:13:28,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:13:28,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:13:28,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:13:28,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:13:28,058 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 23:13:28,072 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:13:28,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:13:28,073 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:13:28,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:13:28,074 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:13:28,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:13:28,074 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:13:28,074 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:13:28,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:13:28,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:13:28,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:13:28,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:13:28,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:13:28,075 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:13:28,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:13:28,076 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:13:28,076 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:13:28,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:13:28,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:13:28,077 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:13:28,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:13:28,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:13:28,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:13:28,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:13:28,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:13:28,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:13:28,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:13:28,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:13:28,079 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 23:13:28,375 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:13:28,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:13:28,394 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:13:28,396 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:13:28,396 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:13:28,396 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product26.cil.c [2019-10-13 23:13:28,457 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f3458bda/6c14dcf25333431797e9e13b8cb2f8ac/FLAG06b5a221e [2019-10-13 23:13:29,083 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:13:29,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product26.cil.c [2019-10-13 23:13:29,112 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f3458bda/6c14dcf25333431797e9e13b8cb2f8ac/FLAG06b5a221e [2019-10-13 23:13:29,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f3458bda/6c14dcf25333431797e9e13b8cb2f8ac [2019-10-13 23:13:29,316 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:13:29,318 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:13:29,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:13:29,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:13:29,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:13:29,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:13:29" (1/1) ... [2019-10-13 23:13:29,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46a202d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:29, skipping insertion in model container [2019-10-13 23:13:29,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:13:29" (1/1) ... [2019-10-13 23:13:29,332 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:13:29,397 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:13:30,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:13:30,136 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:13:30,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:13:30,368 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:13:30,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:30 WrapperNode [2019-10-13 23:13:30,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:13:30,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:13:30,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:13:30,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:13:30,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:30" (1/1) ... [2019-10-13 23:13:30,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:30" (1/1) ... [2019-10-13 23:13:30,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:30" (1/1) ... [2019-10-13 23:13:30,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:30" (1/1) ... [2019-10-13 23:13:30,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:30" (1/1) ... [2019-10-13 23:13:30,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:30" (1/1) ... [2019-10-13 23:13:30,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:30" (1/1) ... [2019-10-13 23:13:30,607 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:13:30,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:13:30,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:13:30,608 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:13:30,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:30" (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 23:13:30,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:13:30,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:13:30,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:13:30,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:13:30,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:13:30,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:13:30,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:13:30,681 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:13:30,682 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:13:30,682 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 23:13:30,682 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 23:13:30,682 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 23:13:30,682 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 23:13:30,683 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 23:13:30,683 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 23:13:30,683 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 23:13:30,683 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 23:13:30,683 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:13:30,684 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:13:30,684 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 23:13:30,684 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 23:13:30,684 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 23:13:30,684 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 23:13:30,685 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 23:13:30,685 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 23:13:30,685 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 23:13:30,685 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 23:13:30,685 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 23:13:30,686 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 23:13:30,686 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-10-13 23:13:30,686 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 23:13:30,686 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:13:30,686 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 23:13:30,686 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 23:13:30,687 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 23:13:30,687 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 23:13:30,687 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 23:13:30,687 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 23:13:30,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:13:30,687 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:13:30,688 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:13:30,688 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:13:30,688 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:13:30,688 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 23:13:30,688 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 23:13:30,688 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 23:13:30,688 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 23:13:30,689 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 23:13:30,689 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 23:13:30,689 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-10-13 23:13:30,689 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 23:13:30,689 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 23:13:30,689 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 23:13:30,689 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 23:13:30,690 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 23:13:30,690 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 23:13:30,690 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 23:13:30,690 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 23:13:30,690 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 23:13:30,690 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 23:13:30,691 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 23:13:30,691 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-10-13 23:13:30,691 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 23:13:30,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 23:13:30,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 23:13:30,691 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 23:13:30,691 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 23:13:30,692 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 23:13:30,692 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 23:13:30,692 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 23:13:30,692 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 23:13:30,692 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 23:13:30,692 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 23:13:30,693 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 23:13:30,693 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 23:13:30,693 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 23:13:30,693 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 23:13:30,693 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 23:13:30,693 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 23:13:30,693 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 23:13:30,694 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 23:13:30,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 23:13:30,694 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 23:13:30,694 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 23:13:30,694 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 23:13:30,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 23:13:30,695 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 23:13:30,695 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 23:13:30,695 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 23:13:30,695 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 23:13:30,695 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 23:13:30,695 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 23:13:30,696 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 23:13:30,696 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 23:13:30,696 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 23:13:30,696 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 23:13:30,696 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 23:13:30,696 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 23:13:30,696 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 23:13:30,696 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 23:13:30,697 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 23:13:30,697 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 23:13:30,697 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 23:13:30,697 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 23:13:30,697 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 23:13:30,697 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 23:13:30,697 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 23:13:30,698 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 23:13:30,698 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 23:13:30,698 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 23:13:30,698 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 23:13:30,698 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 23:13:30,698 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 23:13:30,698 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 23:13:30,699 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 23:13:30,699 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 23:13:30,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:13:30,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:13:30,699 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:13:30,699 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:13:30,700 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:13:30,700 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:13:30,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:13:30,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:13:30,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:13:30,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:13:30,700 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:13:30,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:13:30,701 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:13:30,701 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:13:30,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:13:30,701 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:13:30,701 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:13:30,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:13:30,702 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:13:30,702 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:13:30,702 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 23:13:30,702 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 23:13:30,702 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 23:13:30,703 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 23:13:30,703 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 23:13:30,703 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 23:13:30,703 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 23:13:30,703 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 23:13:30,703 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 23:13:30,703 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 23:13:30,704 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 23:13:30,704 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 23:13:30,704 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 23:13:30,706 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:13:30,706 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:13:30,706 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:13:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 23:13:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 23:13:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 23:13:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 23:13:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 23:13:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 23:13:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 23:13:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 23:13:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 23:13:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 23:13:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 23:13:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:13:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:13:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:13:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 23:13:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 23:13:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 23:13:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 23:13:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 23:13:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 23:13:30,710 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 23:13:30,710 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 23:13:30,710 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 23:13:30,710 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 23:13:30,710 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-10-13 23:13:30,711 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 23:13:30,711 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 23:13:30,711 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 23:13:30,711 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 23:13:30,711 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 23:13:30,711 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 23:13:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 23:13:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 23:13:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 23:13:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 23:13:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 23:13:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 23:13:30,713 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 23:13:30,713 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 23:13:30,713 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 23:13:30,713 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 23:13:30,713 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 23:13:30,713 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:13:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:13:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 23:13:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 23:13:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 23:13:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 23:13:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 23:13:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 23:13:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 23:13:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 23:13:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 23:13:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 23:13:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 23:13:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 23:13:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 23:13:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 23:13:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 23:13:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 23:13:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 23:13:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-10-13 23:13:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 23:13:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-13 23:13:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 23:13:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 23:13:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 23:13:30,719 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-10-13 23:13:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 23:13:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-13 23:13:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 23:13:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 23:13:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 23:13:30,720 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 23:13:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 23:13:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 23:13:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 23:13:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 23:13:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 23:13:30,721 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 23:13:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 23:13:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 23:13:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 23:13:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 23:13:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 23:13:30,722 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 23:13:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 23:13:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 23:13:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 23:13:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 23:13:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 23:13:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 23:13:30,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:13:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:13:30,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:13:34,979 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:13:34,979 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 23:13:34,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:13:34 BoogieIcfgContainer [2019-10-13 23:13:34,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:13:34,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:13:34,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:13:34,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:13:34,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:13:29" (1/3) ... [2019-10-13 23:13:34,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382bba77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:13:34, skipping insertion in model container [2019-10-13 23:13:34,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:13:30" (2/3) ... [2019-10-13 23:13:34,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@382bba77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:13:34, skipping insertion in model container [2019-10-13 23:13:34,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:13:34" (3/3) ... [2019-10-13 23:13:34,991 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product26.cil.c [2019-10-13 23:13:35,000 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:13:35,011 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:13:35,027 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:13:35,068 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:13:35,068 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:13:35,068 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:13:35,069 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:13:35,069 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:13:35,069 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:13:35,069 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:13:35,069 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:13:35,106 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states. [2019-10-13 23:13:35,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-10-13 23:13:35,124 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:35,126 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:35,128 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:35,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:35,133 INFO L82 PathProgramCache]: Analyzing trace with hash 2007486757, now seen corresponding path program 1 times [2019-10-13 23:13:35,141 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:35,141 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539178107] [2019-10-13 23:13:35,142 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:35,142 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:35,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:35,849 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:13:35,850 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539178107] [2019-10-13 23:13:35,851 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:35,851 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:13:35,852 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170162076] [2019-10-13 23:13:35,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:13:35,860 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:35,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:13:35,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:13:35,876 INFO L87 Difference]: Start difference. First operand 420 states. Second operand 2 states. [2019-10-13 23:13:35,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:35,951 INFO L93 Difference]: Finished difference Result 615 states and 732 transitions. [2019-10-13 23:13:35,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:13:35,953 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 121 [2019-10-13 23:13:35,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:35,972 INFO L225 Difference]: With dead ends: 615 [2019-10-13 23:13:35,972 INFO L226 Difference]: Without dead ends: 393 [2019-10-13 23:13:35,981 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 23:13:36,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2019-10-13 23:13:36,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2019-10-13 23:13:36,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2019-10-13 23:13:36,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 464 transitions. [2019-10-13 23:13:36,120 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 464 transitions. Word has length 121 [2019-10-13 23:13:36,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:36,123 INFO L462 AbstractCegarLoop]: Abstraction has 393 states and 464 transitions. [2019-10-13 23:13:36,123 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:13:36,123 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 464 transitions. [2019-10-13 23:13:36,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2019-10-13 23:13:36,136 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:36,137 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:36,138 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:36,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:36,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1428415782, now seen corresponding path program 1 times [2019-10-13 23:13:36,139 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:36,139 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017573633] [2019-10-13 23:13:36,139 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:36,139 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:36,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:36,405 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:13:36,406 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017573633] [2019-10-13 23:13:36,406 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:36,406 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:36,406 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022697590] [2019-10-13 23:13:36,409 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:36,409 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:36,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:36,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:36,410 INFO L87 Difference]: Start difference. First operand 393 states and 464 transitions. Second operand 3 states. [2019-10-13 23:13:36,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:36,479 INFO L93 Difference]: Finished difference Result 600 states and 701 transitions. [2019-10-13 23:13:36,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:36,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2019-10-13 23:13:36,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:36,491 INFO L225 Difference]: With dead ends: 600 [2019-10-13 23:13:36,491 INFO L226 Difference]: Without dead ends: 395 [2019-10-13 23:13:36,496 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 23:13:36,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2019-10-13 23:13:36,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 395. [2019-10-13 23:13:36,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2019-10-13 23:13:36,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 466 transitions. [2019-10-13 23:13:36,535 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 466 transitions. Word has length 122 [2019-10-13 23:13:36,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:36,535 INFO L462 AbstractCegarLoop]: Abstraction has 395 states and 466 transitions. [2019-10-13 23:13:36,536 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:36,536 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 466 transitions. [2019-10-13 23:13:36,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-13 23:13:36,539 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:36,539 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] [2019-10-13 23:13:36,539 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:36,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:36,540 INFO L82 PathProgramCache]: Analyzing trace with hash 2110274793, now seen corresponding path program 1 times [2019-10-13 23:13:36,540 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:36,540 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751142398] [2019-10-13 23:13:36,540 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:36,540 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:36,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:36,684 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-13 23:13:36,684 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751142398] [2019-10-13 23:13:36,684 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:36,685 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:36,685 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085733194] [2019-10-13 23:13:36,685 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:36,686 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:36,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:36,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:36,686 INFO L87 Difference]: Start difference. First operand 395 states and 466 transitions. Second operand 3 states. [2019-10-13 23:13:36,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:36,736 INFO L93 Difference]: Finished difference Result 776 states and 945 transitions. [2019-10-13 23:13:36,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:36,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2019-10-13 23:13:36,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:36,741 INFO L225 Difference]: With dead ends: 776 [2019-10-13 23:13:36,741 INFO L226 Difference]: Without dead ends: 439 [2019-10-13 23:13:36,743 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 23:13:36,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2019-10-13 23:13:36,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 438. [2019-10-13 23:13:36,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 438 states. [2019-10-13 23:13:36,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 540 transitions. [2019-10-13 23:13:36,782 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 540 transitions. Word has length 134 [2019-10-13 23:13:36,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:36,783 INFO L462 AbstractCegarLoop]: Abstraction has 438 states and 540 transitions. [2019-10-13 23:13:36,783 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:36,783 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 540 transitions. [2019-10-13 23:13:36,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-13 23:13:36,792 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:36,794 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] [2019-10-13 23:13:36,794 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:36,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:36,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1667295687, now seen corresponding path program 1 times [2019-10-13 23:13:36,795 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:36,796 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922113463] [2019-10-13 23:13:36,796 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:36,796 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:36,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:37,121 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 23:13:37,121 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922113463] [2019-10-13 23:13:37,122 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:37,122 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:37,122 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961644990] [2019-10-13 23:13:37,123 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:37,123 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:37,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:37,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:37,123 INFO L87 Difference]: Start difference. First operand 438 states and 540 transitions. Second operand 3 states. [2019-10-13 23:13:37,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:37,169 INFO L93 Difference]: Finished difference Result 695 states and 841 transitions. [2019-10-13 23:13:37,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:37,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2019-10-13 23:13:37,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:37,174 INFO L225 Difference]: With dead ends: 695 [2019-10-13 23:13:37,174 INFO L226 Difference]: Without dead ends: 502 [2019-10-13 23:13:37,175 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 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 23:13:37,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2019-10-13 23:13:37,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 501. [2019-10-13 23:13:37,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2019-10-13 23:13:37,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 613 transitions. [2019-10-13 23:13:37,201 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 613 transitions. Word has length 135 [2019-10-13 23:13:37,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:37,202 INFO L462 AbstractCegarLoop]: Abstraction has 501 states and 613 transitions. [2019-10-13 23:13:37,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:37,202 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 613 transitions. [2019-10-13 23:13:37,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-13 23:13:37,207 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:37,207 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:37,207 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:37,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:37,208 INFO L82 PathProgramCache]: Analyzing trace with hash 505031102, now seen corresponding path program 1 times [2019-10-13 23:13:37,208 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:37,208 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297156364] [2019-10-13 23:13:37,208 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:37,208 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:37,209 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:37,604 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:37,605 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297156364] [2019-10-13 23:13:37,605 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:37,606 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:13:37,606 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732163079] [2019-10-13 23:13:37,607 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:13:37,607 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:37,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:13:37,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:13:37,608 INFO L87 Difference]: Start difference. First operand 501 states and 613 transitions. Second operand 12 states. [2019-10-13 23:13:40,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:40,239 INFO L93 Difference]: Finished difference Result 1173 states and 1424 transitions. [2019-10-13 23:13:40,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 23:13:40,241 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 236 [2019-10-13 23:13:40,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:40,252 INFO L225 Difference]: With dead ends: 1173 [2019-10-13 23:13:40,252 INFO L226 Difference]: Without dead ends: 922 [2019-10-13 23:13:40,255 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 23:13:40,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2019-10-13 23:13:40,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 913. [2019-10-13 23:13:40,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 913 states. [2019-10-13 23:13:40,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1126 transitions. [2019-10-13 23:13:40,321 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1126 transitions. Word has length 236 [2019-10-13 23:13:40,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:40,322 INFO L462 AbstractCegarLoop]: Abstraction has 913 states and 1126 transitions. [2019-10-13 23:13:40,322 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:13:40,322 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1126 transitions. [2019-10-13 23:13:40,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2019-10-13 23:13:40,328 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:40,328 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:40,328 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:40,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:40,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1103444841, now seen corresponding path program 1 times [2019-10-13 23:13:40,329 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:40,329 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936903628] [2019-10-13 23:13:40,329 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:40,330 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:40,330 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:40,557 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936903628] [2019-10-13 23:13:40,558 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:40,558 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:40,558 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015625829] [2019-10-13 23:13:40,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:40,560 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:40,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:40,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:40,560 INFO L87 Difference]: Start difference. First operand 913 states and 1126 transitions. Second operand 3 states. [2019-10-13 23:13:40,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:40,610 INFO L93 Difference]: Finished difference Result 1932 states and 2473 transitions. [2019-10-13 23:13:40,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:40,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 251 [2019-10-13 23:13:40,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:40,620 INFO L225 Difference]: With dead ends: 1932 [2019-10-13 23:13:40,620 INFO L226 Difference]: Without dead ends: 1077 [2019-10-13 23:13:40,624 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 23:13:40,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2019-10-13 23:13:40,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1075. [2019-10-13 23:13:40,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1075 states. [2019-10-13 23:13:40,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1404 transitions. [2019-10-13 23:13:40,722 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1404 transitions. Word has length 251 [2019-10-13 23:13:40,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:40,723 INFO L462 AbstractCegarLoop]: Abstraction has 1075 states and 1404 transitions. [2019-10-13 23:13:40,723 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:40,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1404 transitions. [2019-10-13 23:13:40,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2019-10-13 23:13:40,735 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:40,735 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:40,736 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:40,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:40,736 INFO L82 PathProgramCache]: Analyzing trace with hash -351024519, now seen corresponding path program 1 times [2019-10-13 23:13:40,736 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:40,737 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890626534] [2019-10-13 23:13:40,737 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:40,737 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:40,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:41,015 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:41,015 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890626534] [2019-10-13 23:13:41,016 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:41,016 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:41,016 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487433936] [2019-10-13 23:13:41,017 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:41,017 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:41,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:41,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:41,019 INFO L87 Difference]: Start difference. First operand 1075 states and 1404 transitions. Second operand 3 states. [2019-10-13 23:13:41,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:41,134 INFO L93 Difference]: Finished difference Result 2406 states and 3287 transitions. [2019-10-13 23:13:41,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:41,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 252 [2019-10-13 23:13:41,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:41,147 INFO L225 Difference]: With dead ends: 2406 [2019-10-13 23:13:41,147 INFO L226 Difference]: Without dead ends: 1389 [2019-10-13 23:13:41,152 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 23:13:41,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2019-10-13 23:13:41,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1387. [2019-10-13 23:13:41,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1387 states. [2019-10-13 23:13:41,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 1936 transitions. [2019-10-13 23:13:41,419 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 1936 transitions. Word has length 252 [2019-10-13 23:13:41,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:41,423 INFO L462 AbstractCegarLoop]: Abstraction has 1387 states and 1936 transitions. [2019-10-13 23:13:41,423 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:41,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 1936 transitions. [2019-10-13 23:13:41,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2019-10-13 23:13:41,434 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:41,434 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:41,434 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:41,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:41,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1639900407, now seen corresponding path program 1 times [2019-10-13 23:13:41,436 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:41,436 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288459102] [2019-10-13 23:13:41,436 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:41,436 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:41,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:41,620 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:41,620 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288459102] [2019-10-13 23:13:41,620 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:41,621 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:41,621 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072835062] [2019-10-13 23:13:41,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:41,622 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:41,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:41,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:41,622 INFO L87 Difference]: Start difference. First operand 1387 states and 1936 transitions. Second operand 3 states. [2019-10-13 23:13:41,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:41,715 INFO L93 Difference]: Finished difference Result 3318 states and 4843 transitions. [2019-10-13 23:13:41,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:41,716 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 253 [2019-10-13 23:13:41,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:41,729 INFO L225 Difference]: With dead ends: 3318 [2019-10-13 23:13:41,729 INFO L226 Difference]: Without dead ends: 1989 [2019-10-13 23:13:41,735 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 23:13:41,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1989 states. [2019-10-13 23:13:41,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1989 to 1987. [2019-10-13 23:13:41,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1987 states. [2019-10-13 23:13:41,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 2952 transitions. [2019-10-13 23:13:41,855 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 2952 transitions. Word has length 253 [2019-10-13 23:13:41,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:41,855 INFO L462 AbstractCegarLoop]: Abstraction has 1987 states and 2952 transitions. [2019-10-13 23:13:41,855 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:41,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 2952 transitions. [2019-10-13 23:13:41,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2019-10-13 23:13:41,867 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:41,867 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:13:41,867 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:41,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:41,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1439854813, now seen corresponding path program 1 times [2019-10-13 23:13:41,868 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:41,868 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193071621] [2019-10-13 23:13:41,868 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:41,869 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:41,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:42,238 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 23:13:42,239 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193071621] [2019-10-13 23:13:42,240 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:42,241 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 23:13:42,241 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065107452] [2019-10-13 23:13:42,242 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 23:13:42,242 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:42,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 23:13:42,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2019-10-13 23:13:42,242 INFO L87 Difference]: Start difference. First operand 1987 states and 2952 transitions. Second operand 11 states. [2019-10-13 23:13:45,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:45,334 INFO L93 Difference]: Finished difference Result 2732 states and 3822 transitions. [2019-10-13 23:13:45,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 23:13:45,334 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 238 [2019-10-13 23:13:45,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:45,354 INFO L225 Difference]: With dead ends: 2732 [2019-10-13 23:13:45,355 INFO L226 Difference]: Without dead ends: 2307 [2019-10-13 23:13:45,357 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2019-10-13 23:13:45,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2019-10-13 23:13:45,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 2290. [2019-10-13 23:13:45,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2290 states. [2019-10-13 23:13:45,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2290 states to 2290 states and 3309 transitions. [2019-10-13 23:13:45,486 INFO L78 Accepts]: Start accepts. Automaton has 2290 states and 3309 transitions. Word has length 238 [2019-10-13 23:13:45,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:45,487 INFO L462 AbstractCegarLoop]: Abstraction has 2290 states and 3309 transitions. [2019-10-13 23:13:45,487 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 23:13:45,487 INFO L276 IsEmpty]: Start isEmpty. Operand 2290 states and 3309 transitions. [2019-10-13 23:13:45,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2019-10-13 23:13:45,499 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:45,499 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:45,500 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:45,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:45,500 INFO L82 PathProgramCache]: Analyzing trace with hash 135113433, now seen corresponding path program 1 times [2019-10-13 23:13:45,500 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:45,500 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846853341] [2019-10-13 23:13:45,501 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:45,501 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:45,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:45,681 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:45,681 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846853341] [2019-10-13 23:13:45,682 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:45,682 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:45,683 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009224319] [2019-10-13 23:13:45,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:45,684 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:45,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:45,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:45,684 INFO L87 Difference]: Start difference. First operand 2290 states and 3309 transitions. Second operand 3 states. [2019-10-13 23:13:45,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:45,800 INFO L93 Difference]: Finished difference Result 5676 states and 8525 transitions. [2019-10-13 23:13:45,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:45,801 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 254 [2019-10-13 23:13:45,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:45,827 INFO L225 Difference]: With dead ends: 5676 [2019-10-13 23:13:45,828 INFO L226 Difference]: Without dead ends: 3444 [2019-10-13 23:13:45,843 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 23:13:45,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3444 states. [2019-10-13 23:13:46,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3444 to 3442. [2019-10-13 23:13:46,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3442 states. [2019-10-13 23:13:46,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3442 states to 3442 states and 5245 transitions. [2019-10-13 23:13:46,017 INFO L78 Accepts]: Start accepts. Automaton has 3442 states and 5245 transitions. Word has length 254 [2019-10-13 23:13:46,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:46,017 INFO L462 AbstractCegarLoop]: Abstraction has 3442 states and 5245 transitions. [2019-10-13 23:13:46,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:46,018 INFO L276 IsEmpty]: Start isEmpty. Operand 3442 states and 5245 transitions. [2019-10-13 23:13:46,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2019-10-13 23:13:46,036 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:46,037 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:46,037 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:46,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:46,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1780480681, now seen corresponding path program 1 times [2019-10-13 23:13:46,038 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:46,038 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923910259] [2019-10-13 23:13:46,038 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:46,038 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:46,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:46,267 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:46,267 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923910259] [2019-10-13 23:13:46,268 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:46,268 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:46,268 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045785783] [2019-10-13 23:13:46,269 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:46,269 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:46,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:46,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:46,269 INFO L87 Difference]: Start difference. First operand 3442 states and 5245 transitions. Second operand 3 states. [2019-10-13 23:13:46,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:46,503 INFO L93 Difference]: Finished difference Result 9036 states and 14173 transitions. [2019-10-13 23:13:46,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:46,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 255 [2019-10-13 23:13:46,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:46,551 INFO L225 Difference]: With dead ends: 9036 [2019-10-13 23:13:46,551 INFO L226 Difference]: Without dead ends: 5652 [2019-10-13 23:13:46,569 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 23:13:46,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5652 states. [2019-10-13 23:13:46,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5652 to 5650. [2019-10-13 23:13:46,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5650 states. [2019-10-13 23:13:46,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5650 states to 5650 states and 8925 transitions. [2019-10-13 23:13:46,853 INFO L78 Accepts]: Start accepts. Automaton has 5650 states and 8925 transitions. Word has length 255 [2019-10-13 23:13:46,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:46,854 INFO L462 AbstractCegarLoop]: Abstraction has 5650 states and 8925 transitions. [2019-10-13 23:13:46,854 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:46,854 INFO L276 IsEmpty]: Start isEmpty. Operand 5650 states and 8925 transitions. [2019-10-13 23:13:46,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2019-10-13 23:13:46,886 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:46,886 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:46,887 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:46,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:46,887 INFO L82 PathProgramCache]: Analyzing trace with hash 772246329, now seen corresponding path program 1 times [2019-10-13 23:13:46,887 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:46,888 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78955993] [2019-10-13 23:13:46,888 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:46,888 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:46,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:47,127 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:47,128 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78955993] [2019-10-13 23:13:47,128 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:13:47,129 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:13:47,129 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42068990] [2019-10-13 23:13:47,129 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:13:47,130 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:13:47,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:13:47,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:13:47,130 INFO L87 Difference]: Start difference. First operand 5650 states and 8925 transitions. Second operand 3 states. [2019-10-13 23:13:47,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:13:47,538 INFO L93 Difference]: Finished difference Result 15468 states and 24893 transitions. [2019-10-13 23:13:47,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:13:47,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 256 [2019-10-13 23:13:47,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:13:47,594 INFO L225 Difference]: With dead ends: 15468 [2019-10-13 23:13:47,594 INFO L226 Difference]: Without dead ends: 9876 [2019-10-13 23:13:47,616 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 23:13:47,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9876 states. [2019-10-13 23:13:48,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9876 to 9874. [2019-10-13 23:13:48,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9874 states. [2019-10-13 23:13:48,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9874 states to 9874 states and 15901 transitions. [2019-10-13 23:13:48,082 INFO L78 Accepts]: Start accepts. Automaton has 9874 states and 15901 transitions. Word has length 256 [2019-10-13 23:13:48,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:13:48,082 INFO L462 AbstractCegarLoop]: Abstraction has 9874 states and 15901 transitions. [2019-10-13 23:13:48,082 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:13:48,082 INFO L276 IsEmpty]: Start isEmpty. Operand 9874 states and 15901 transitions. [2019-10-13 23:13:48,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2019-10-13 23:13:48,135 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:13:48,136 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:13:48,136 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:13:48,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:13:48,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1264854455, now seen corresponding path program 1 times [2019-10-13 23:13:48,137 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:13:48,137 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459715065] [2019-10-13 23:13:48,137 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:48,137 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:13:48,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:13:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:48,788 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-13 23:13:48,789 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459715065] [2019-10-13 23:13:48,789 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469025314] [2019-10-13 23:13:48,789 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 23:13:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:13:49,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 3533 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 23:13:49,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:13:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 23:13:49,604 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:13:50,006 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 23:13:50,006 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1248630020] [2019-10-13 23:13:50,045 INFO L162 IcfgInterpreter]: Started Sifa with 208 locations of interest [2019-10-13 23:13:50,045 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:13:50,052 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:13:50,060 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:13:50,060 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs