/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec9_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:56:50,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:56:50,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:56:50,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:56:50,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:56:50,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:56:50,928 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:56:50,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:56:50,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:56:50,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:56:50,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:56:50,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:56:50,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:56:50,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:56:50,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:56:50,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:56:50,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:56:50,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:56:50,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:56:50,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:56:50,969 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:56:50,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:56:50,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:56:50,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:56:50,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:56:50,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:56:50,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:56:50,980 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:56:50,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:56:50,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:56:50,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:56:50,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:56:50,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:56:50,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:56:50,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:56:50,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:56:50,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:56:50,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:56:50,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:56:50,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:56:50,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:56:50,991 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 [2019-11-07 00:56:51,021 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:56:51,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:56:51,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:56:51,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:56:51,023 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:56:51,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:56:51,023 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:56:51,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:56:51,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:56:51,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:56:51,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:56:51,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:56:51,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:56:51,025 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:56:51,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:56:51,025 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:56:51,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:56:51,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:56:51,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:56:51,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:56:51,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:56:51,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:56:51,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:56:51,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:56:51,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:56:51,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:56:51,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:56:51,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:56:51,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:56:51,335 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:56:51,352 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:56:51,356 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:56:51,358 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:56:51,359 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:56:51,359 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product26.cil.c [2019-11-07 00:56:51,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9be7814a/2c4feef9d35d43bf94542c8d784a99a2/FLAG73f8d1727 [2019-11-07 00:56:52,012 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:56:52,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product26.cil.c [2019-11-07 00:56:52,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9be7814a/2c4feef9d35d43bf94542c8d784a99a2/FLAG73f8d1727 [2019-11-07 00:56:52,277 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9be7814a/2c4feef9d35d43bf94542c8d784a99a2 [2019-11-07 00:56:52,285 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:56:52,287 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:56:52,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:56:52,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:56:52,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:56:52,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:52" (1/1) ... [2019-11-07 00:56:52,295 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5adb59db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:52, skipping insertion in model container [2019-11-07 00:56:52,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:52" (1/1) ... [2019-11-07 00:56:52,304 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:56:52,386 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:56:53,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:56:53,184 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:56:53,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:56:53,431 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:56:53,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:53 WrapperNode [2019-11-07 00:56:53,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:56:53,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:56:53,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:56:53,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:56:53,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:53" (1/1) ... [2019-11-07 00:56:53,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:53" (1/1) ... [2019-11-07 00:56:53,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:53" (1/1) ... [2019-11-07 00:56:53,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:53" (1/1) ... [2019-11-07 00:56:53,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:53" (1/1) ... [2019-11-07 00:56:53,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:53" (1/1) ... [2019-11-07 00:56:53,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:53" (1/1) ... [2019-11-07 00:56:53,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:56:53,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:56:53,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:56:53,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:56:53,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:53" (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 [2019-11-07 00:56:53,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:56:53,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:56:53,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:56:53,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:56:53,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:56:53,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:56:53,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:56:53,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:56:53,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:56:53,715 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:56:53,715 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:56:53,716 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:56:53,716 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:56:53,716 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:56:53,716 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:56:53,716 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:56:53,716 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:56:53,717 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:56:53,717 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:56:53,717 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:56:53,717 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:56:53,717 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:56:53,720 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:56:53,720 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:56:53,720 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:56:53,720 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:56:53,721 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:56:53,721 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:56:53,721 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:56:53,721 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:56:53,721 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:56:53,721 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:56:53,721 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:56:53,721 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:56:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:56:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:56:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:56:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:56:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:56:53,722 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:56:53,723 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:56:53,723 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:56:53,723 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:56:53,723 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:56:53,723 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:56:53,723 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:56:53,723 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:56:53,723 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:56:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:56:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-11-07 00:56:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:56:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:56:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:56:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:56:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:56:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:56:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:56:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:56:53,725 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:56:53,726 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:56:53,726 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:56:53,726 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:56:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:56:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-11-07 00:56:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-11-07 00:56:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:56:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:56:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:56:53,727 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:56:53,728 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:56:53,728 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:56:53,728 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:56:53,728 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:56:53,729 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:56:53,729 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:56:53,729 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:56:53,729 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:56:53,729 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:56:53,730 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:56:53,730 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:56:53,731 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:56:53,731 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:56:53,731 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:56:53,731 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:56:53,732 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:56:53,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:56:53,733 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:56:53,733 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:56:53,734 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:56:53,734 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:56:53,734 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:56:53,734 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:56:53,734 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:56:53,734 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:56:53,734 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:56:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:56:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:56:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:56:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:56:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:56:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:56:53,735 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:56:53,736 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:56:53,736 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:56:53,736 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:56:53,736 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:56:53,736 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:56:53,736 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:56:53,737 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:56:53,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:56:53,737 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:56:53,737 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:56:53,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:56:53,737 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:56:53,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:56:53,738 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:56:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:56:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:56:53,738 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:56:53,739 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:56:53,739 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:56:53,739 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:56:53,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:56:53,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:56:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:56:53,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:56:53,744 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:56:53,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:56:53,744 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:56:53,744 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:56:53,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:56:53,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:56:53,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:56:53,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:56:53,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:56:53,746 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:56:53,746 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:56:53,749 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:56:53,749 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:56:53,750 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:56:53,750 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:56:53,750 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:56:53,750 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:56:53,751 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:56:53,756 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:56:53,756 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:56:53,756 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:56:53,756 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:56:53,756 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:56:53,756 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:56:53,757 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:56:53,757 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:56:53,757 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:56:53,757 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:56:53,757 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:56:53,757 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:56:53,757 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:56:53,757 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:56:53,758 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:56:53,758 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:56:53,759 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:56:53,759 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:56:53,759 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:56:53,759 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:56:53,759 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:56:53,759 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:56:53,759 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:56:53,759 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:56:53,760 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:56:53,760 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:56:53,760 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:56:53,760 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:56:53,760 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:56:53,760 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:56:53,760 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:56:53,760 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:56:53,761 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:56:53,761 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:56:53,761 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:56:53,761 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:56:53,761 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:56:53,761 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:56:53,761 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:56:53,762 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:56:53,762 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:56:53,762 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:56:53,762 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:56:53,762 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:56:53,762 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:56:53,763 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:56:53,763 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:56:53,763 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:56:53,763 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:56:53,763 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:56:53,763 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:56:53,764 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:56:53,764 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:56:53,764 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:56:53,764 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:56:53,764 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:56:53,764 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:56:53,765 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:56:53,765 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:56:53,765 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:56:53,765 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:56:53,765 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:56:53,765 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:56:53,766 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:56:53,767 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:56:53,767 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:56:53,768 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:56:53,768 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:56:53,768 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:56:53,768 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:56:53,768 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:56:53,768 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-11-07 00:56:53,769 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:56:53,769 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:56:53,769 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:56:53,769 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-11-07 00:56:53,769 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:56:53,769 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-11-07 00:56:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:56:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:56:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:56:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:56:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:56:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:56:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:56:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:56:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:56:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:56:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:56:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:56:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:56:53,772 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:56:53,772 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:56:53,772 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:56:53,772 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:56:53,772 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:56:53,772 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:56:53,772 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:56:53,773 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:56:53,773 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:56:53,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:56:53,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:56:53,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:56:55,918 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:56:55,919 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:56:55,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:55 BoogieIcfgContainer [2019-11-07 00:56:55,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:56:55,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:56:55,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:56:55,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:56:55,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:56:52" (1/3) ... [2019-11-07 00:56:55,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d39bed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:55, skipping insertion in model container [2019-11-07 00:56:55,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:53" (2/3) ... [2019-11-07 00:56:55,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d39bed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:55, skipping insertion in model container [2019-11-07 00:56:55,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:55" (3/3) ... [2019-11-07 00:56:55,929 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product26.cil.c [2019-11-07 00:56:55,940 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:56:55,951 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:56:55,964 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:56:55,996 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:56:55,996 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:56:55,996 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:56:55,996 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:56:55,996 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:56:55,997 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:56:55,997 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:56:55,997 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:56:56,028 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states. [2019-11-07 00:56:56,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-11-07 00:56:56,050 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:56,051 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:56,053 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:56,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:56,060 INFO L82 PathProgramCache]: Analyzing trace with hash -659135283, now seen corresponding path program 1 times [2019-11-07 00:56:56,072 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:56,072 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588084742] [2019-11-07 00:56:56,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:56,760 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:56:56,761 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588084742] [2019-11-07 00:56:56,762 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:56,763 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:56:56,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598253793] [2019-11-07 00:56:56,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:56:56,772 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:56,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:56:56,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:56:56,789 INFO L87 Difference]: Start difference. First operand 605 states. Second operand 2 states. [2019-11-07 00:56:56,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:56,870 INFO L93 Difference]: Finished difference Result 885 states and 1196 transitions. [2019-11-07 00:56:56,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:56:56,875 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 154 [2019-11-07 00:56:56,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:56,898 INFO L225 Difference]: With dead ends: 885 [2019-11-07 00:56:56,899 INFO L226 Difference]: Without dead ends: 576 [2019-11-07 00:56:56,906 INFO L630 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 [2019-11-07 00:56:56,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2019-11-07 00:56:57,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2019-11-07 00:56:57,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2019-11-07 00:56:57,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 784 transitions. [2019-11-07 00:56:57,047 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 784 transitions. Word has length 154 [2019-11-07 00:56:57,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:57,050 INFO L462 AbstractCegarLoop]: Abstraction has 576 states and 784 transitions. [2019-11-07 00:56:57,050 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:56:57,050 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 784 transitions. [2019-11-07 00:56:57,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-11-07 00:56:57,060 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:57,060 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:57,060 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:57,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:57,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1368128065, now seen corresponding path program 1 times [2019-11-07 00:56:57,061 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:57,061 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758170706] [2019-11-07 00:56:57,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:57,344 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:56:57,344 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758170706] [2019-11-07 00:56:57,345 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:57,345 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:57,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843254033] [2019-11-07 00:56:57,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:57,349 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:57,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:57,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:57,351 INFO L87 Difference]: Start difference. First operand 576 states and 784 transitions. Second operand 3 states. [2019-11-07 00:56:57,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:57,424 INFO L93 Difference]: Finished difference Result 868 states and 1162 transitions. [2019-11-07 00:56:57,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:57,424 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-11-07 00:56:57,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:57,433 INFO L225 Difference]: With dead ends: 868 [2019-11-07 00:56:57,433 INFO L226 Difference]: Without dead ends: 579 [2019-11-07 00:56:57,436 INFO L630 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 [2019-11-07 00:56:57,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2019-11-07 00:56:57,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 578. [2019-11-07 00:56:57,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2019-11-07 00:56:57,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 786 transitions. [2019-11-07 00:56:57,475 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 786 transitions. Word has length 155 [2019-11-07 00:56:57,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:57,475 INFO L462 AbstractCegarLoop]: Abstraction has 578 states and 786 transitions. [2019-11-07 00:56:57,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:57,476 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 786 transitions. [2019-11-07 00:56:57,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-11-07 00:56:57,481 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:57,481 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:57,481 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:57,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:57,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1660274866, now seen corresponding path program 1 times [2019-11-07 00:56:57,482 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:57,482 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945358355] [2019-11-07 00:56:57,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:57,700 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:56:57,700 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945358355] [2019-11-07 00:56:57,700 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:57,700 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:57,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821373939] [2019-11-07 00:56:57,704 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:57,706 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:57,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:57,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:57,707 INFO L87 Difference]: Start difference. First operand 578 states and 786 transitions. Second operand 3 states. [2019-11-07 00:56:57,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:57,762 INFO L93 Difference]: Finished difference Result 1136 states and 1576 transitions. [2019-11-07 00:56:57,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:57,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 167 [2019-11-07 00:56:57,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:57,768 INFO L225 Difference]: With dead ends: 1136 [2019-11-07 00:56:57,768 INFO L226 Difference]: Without dead ends: 623 [2019-11-07 00:56:57,771 INFO L630 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 [2019-11-07 00:56:57,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2019-11-07 00:56:57,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 622. [2019-11-07 00:56:57,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2019-11-07 00:56:57,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 861 transitions. [2019-11-07 00:56:57,802 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 861 transitions. Word has length 167 [2019-11-07 00:56:57,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:57,802 INFO L462 AbstractCegarLoop]: Abstraction has 622 states and 861 transitions. [2019-11-07 00:56:57,802 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:57,803 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 861 transitions. [2019-11-07 00:56:57,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-11-07 00:56:57,807 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:57,808 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:57,808 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:57,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:57,808 INFO L82 PathProgramCache]: Analyzing trace with hash -329114566, now seen corresponding path program 1 times [2019-11-07 00:56:57,809 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:57,809 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061967192] [2019-11-07 00:56:57,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:58,077 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:56:58,077 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061967192] [2019-11-07 00:56:58,078 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:58,078 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:58,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369164914] [2019-11-07 00:56:58,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:58,079 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:58,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:58,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:58,080 INFO L87 Difference]: Start difference. First operand 622 states and 861 transitions. Second operand 3 states. [2019-11-07 00:56:58,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:58,131 INFO L93 Difference]: Finished difference Result 1265 states and 1796 transitions. [2019-11-07 00:56:58,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:58,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 168 [2019-11-07 00:56:58,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:58,138 INFO L225 Difference]: With dead ends: 1265 [2019-11-07 00:56:58,139 INFO L226 Difference]: Without dead ends: 708 [2019-11-07 00:56:58,142 INFO L630 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 [2019-11-07 00:56:58,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2019-11-07 00:56:58,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 707. [2019-11-07 00:56:58,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 707 states. [2019-11-07 00:56:58,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1005 transitions. [2019-11-07 00:56:58,183 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1005 transitions. Word has length 168 [2019-11-07 00:56:58,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:58,184 INFO L462 AbstractCegarLoop]: Abstraction has 707 states and 1005 transitions. [2019-11-07 00:56:58,184 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:58,184 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1005 transitions. [2019-11-07 00:56:58,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2019-11-07 00:56:58,190 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:58,191 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:58,191 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:58,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:58,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1757978450, now seen corresponding path program 1 times [2019-11-07 00:56:58,192 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:58,192 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934247948] [2019-11-07 00:56:58,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:58,429 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:56:58,430 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934247948] [2019-11-07 00:56:58,430 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:58,430 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:58,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801953670] [2019-11-07 00:56:58,431 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:58,431 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:58,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:58,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:58,432 INFO L87 Difference]: Start difference. First operand 707 states and 1005 transitions. Second operand 3 states. [2019-11-07 00:56:58,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:58,489 INFO L93 Difference]: Finished difference Result 1514 states and 2218 transitions. [2019-11-07 00:56:58,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:58,490 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2019-11-07 00:56:58,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:58,497 INFO L225 Difference]: With dead ends: 1514 [2019-11-07 00:56:58,498 INFO L226 Difference]: Without dead ends: 872 [2019-11-07 00:56:58,501 INFO L630 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 [2019-11-07 00:56:58,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2019-11-07 00:56:58,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 871. [2019-11-07 00:56:58,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 871 states. [2019-11-07 00:56:58,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1281 transitions. [2019-11-07 00:56:58,547 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1281 transitions. Word has length 169 [2019-11-07 00:56:58,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:58,548 INFO L462 AbstractCegarLoop]: Abstraction has 871 states and 1281 transitions. [2019-11-07 00:56:58,548 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:58,549 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1281 transitions. [2019-11-07 00:56:58,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-07 00:56:58,556 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:58,557 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:58,557 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:58,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:58,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1940197261, now seen corresponding path program 1 times [2019-11-07 00:56:58,558 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:58,559 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448525716] [2019-11-07 00:56:58,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:58,873 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:56:58,873 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448525716] [2019-11-07 00:56:58,873 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:58,874 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:58,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168208702] [2019-11-07 00:56:58,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:58,875 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:58,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:58,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:58,875 INFO L87 Difference]: Start difference. First operand 871 states and 1281 transitions. Second operand 3 states. [2019-11-07 00:56:58,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:58,923 INFO L93 Difference]: Finished difference Result 1261 states and 1810 transitions. [2019-11-07 00:56:58,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:58,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-11-07 00:56:58,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:58,932 INFO L225 Difference]: With dead ends: 1261 [2019-11-07 00:56:58,933 INFO L226 Difference]: Without dead ends: 985 [2019-11-07 00:56:58,934 INFO L630 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 [2019-11-07 00:56:58,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2019-11-07 00:56:58,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 984. [2019-11-07 00:56:58,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 984 states. [2019-11-07 00:56:58,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1443 transitions. [2019-11-07 00:56:58,980 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1443 transitions. Word has length 171 [2019-11-07 00:56:58,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:58,981 INFO L462 AbstractCegarLoop]: Abstraction has 984 states and 1443 transitions. [2019-11-07 00:56:58,981 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:58,982 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1443 transitions. [2019-11-07 00:56:58,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2019-11-07 00:56:58,989 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:58,990 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-07 00:56:58,990 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:58,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:58,991 INFO L82 PathProgramCache]: Analyzing trace with hash 2026794430, now seen corresponding path program 1 times [2019-11-07 00:56:58,991 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:58,991 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847383506] [2019-11-07 00:56:58,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:59,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:59,295 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-11-07 00:56:59,296 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847383506] [2019-11-07 00:56:59,296 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:59,296 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:56:59,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058615145] [2019-11-07 00:56:59,297 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:56:59,298 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:59,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:56:59,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:56:59,299 INFO L87 Difference]: Start difference. First operand 984 states and 1443 transitions. Second operand 6 states. [2019-11-07 00:57:00,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:00,292 INFO L93 Difference]: Finished difference Result 2297 states and 3345 transitions. [2019-11-07 00:57:00,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:57:00,292 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 306 [2019-11-07 00:57:00,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:00,305 INFO L225 Difference]: With dead ends: 2297 [2019-11-07 00:57:00,305 INFO L226 Difference]: Without dead ends: 1919 [2019-11-07 00:57:00,308 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:57:00,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2019-11-07 00:57:00,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1908. [2019-11-07 00:57:00,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1908 states. [2019-11-07 00:57:00,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 2828 transitions. [2019-11-07 00:57:00,411 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 2828 transitions. Word has length 306 [2019-11-07 00:57:00,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:00,411 INFO L462 AbstractCegarLoop]: Abstraction has 1908 states and 2828 transitions. [2019-11-07 00:57:00,411 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:57:00,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 2828 transitions. [2019-11-07 00:57:00,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2019-11-07 00:57:00,424 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:00,424 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-07 00:57:00,424 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:00,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:00,425 INFO L82 PathProgramCache]: Analyzing trace with hash -900714473, now seen corresponding path program 1 times [2019-11-07 00:57:00,425 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:00,425 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968876667] [2019-11-07 00:57:00,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:00,742 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-11-07 00:57:00,742 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968876667] [2019-11-07 00:57:00,742 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:57:00,742 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:57:00,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865281254] [2019-11-07 00:57:00,744 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:57:00,745 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:00,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:57:00,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:57:00,745 INFO L87 Difference]: Start difference. First operand 1908 states and 2828 transitions. Second operand 9 states. [2019-11-07 00:57:01,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:01,159 INFO L93 Difference]: Finished difference Result 2661 states and 3825 transitions. [2019-11-07 00:57:01,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:57:01,160 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 307 [2019-11-07 00:57:01,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:01,172 INFO L225 Difference]: With dead ends: 2661 [2019-11-07 00:57:01,172 INFO L226 Difference]: Without dead ends: 1882 [2019-11-07 00:57:01,175 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-11-07 00:57:01,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2019-11-07 00:57:01,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1878. [2019-11-07 00:57:01,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1878 states. [2019-11-07 00:57:01,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2777 transitions. [2019-11-07 00:57:01,282 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2777 transitions. Word has length 307 [2019-11-07 00:57:01,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:01,283 INFO L462 AbstractCegarLoop]: Abstraction has 1878 states and 2777 transitions. [2019-11-07 00:57:01,283 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:57:01,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2777 transitions. [2019-11-07 00:57:01,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2019-11-07 00:57:01,297 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:01,298 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-07 00:57:01,298 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:01,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:01,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1909492724, now seen corresponding path program 1 times [2019-11-07 00:57:01,299 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:01,299 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54281336] [2019-11-07 00:57:01,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:01,852 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-11-07 00:57:01,853 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54281336] [2019-11-07 00:57:01,854 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655486726] [2019-11-07 00:57:01,854 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 [2019-11-07 00:57:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:02,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 3421 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:57:02,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:57:03,011 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-11-07 00:57:03,012 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:57:03,690 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:57:03,782 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:03,886 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:04,138 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-11-07 00:57:04,138 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:57:04,139 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-11-07 00:57:04,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333537626] [2019-11-07 00:57:04,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:57:04,141 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:04,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:57:04,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:57:04,142 INFO L87 Difference]: Start difference. First operand 1878 states and 2777 transitions. Second operand 9 states. [2019-11-07 00:57:05,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:05,749 INFO L93 Difference]: Finished difference Result 3734 states and 5534 transitions. [2019-11-07 00:57:05,751 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:57:05,751 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 300 [2019-11-07 00:57:05,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:05,764 INFO L225 Difference]: With dead ends: 3734 [2019-11-07 00:57:05,764 INFO L226 Difference]: Without dead ends: 1892 [2019-11-07 00:57:05,773 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 589 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 00:57:05,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2019-11-07 00:57:05,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1892. [2019-11-07 00:57:05,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1892 states. [2019-11-07 00:57:05,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1892 states to 1892 states and 2795 transitions. [2019-11-07 00:57:05,898 INFO L78 Accepts]: Start accepts. Automaton has 1892 states and 2795 transitions. Word has length 300 [2019-11-07 00:57:05,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:05,898 INFO L462 AbstractCegarLoop]: Abstraction has 1892 states and 2795 transitions. [2019-11-07 00:57:05,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:57:05,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1892 states and 2795 transitions. [2019-11-07 00:57:05,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2019-11-07 00:57:05,912 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:05,912 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-07 00:57:06,122 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:57:06,122 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:06,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:06,123 INFO L82 PathProgramCache]: Analyzing trace with hash -308176290, now seen corresponding path program 1 times [2019-11-07 00:57:06,123 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:06,125 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422012223] [2019-11-07 00:57:06,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:06,905 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-11-07 00:57:06,905 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422012223] [2019-11-07 00:57:06,906 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061333449] [2019-11-07 00:57:06,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:57:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:07,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 3422 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:57:07,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:57:07,890 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-11-07 00:57:07,890 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:57:08,553 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:08,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-11-07 00:57:08,693 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:57:08,694 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-11-07 00:57:08,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893622006] [2019-11-07 00:57:08,695 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:57:08,695 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:08,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:57:08,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:57:08,696 INFO L87 Difference]: Start difference. First operand 1892 states and 2795 transitions. Second operand 7 states. [2019-11-07 00:57:10,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:10,382 INFO L93 Difference]: Finished difference Result 3737 states and 5547 transitions. [2019-11-07 00:57:10,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:57:10,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 301 [2019-11-07 00:57:10,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:10,395 INFO L225 Difference]: With dead ends: 3737 [2019-11-07 00:57:10,395 INFO L226 Difference]: Without dead ends: 1896 [2019-11-07 00:57:10,403 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 596 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-11-07 00:57:10,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2019-11-07 00:57:10,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1896. [2019-11-07 00:57:10,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1896 states. [2019-11-07 00:57:10,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2800 transitions. [2019-11-07 00:57:10,487 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2800 transitions. Word has length 301 [2019-11-07 00:57:10,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:10,488 INFO L462 AbstractCegarLoop]: Abstraction has 1896 states and 2800 transitions. [2019-11-07 00:57:10,488 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:57:10,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2800 transitions. [2019-11-07 00:57:10,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2019-11-07 00:57:10,499 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:10,499 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-07 00:57:10,707 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:57:10,708 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:10,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:10,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1715913160, now seen corresponding path program 1 times [2019-11-07 00:57:10,708 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:10,709 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804590841] [2019-11-07 00:57:10,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:11,402 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-11-07 00:57:11,402 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804590841] [2019-11-07 00:57:11,403 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389651578] [2019-11-07 00:57:11,403 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:57:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:12,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 3423 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:57:12,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:57:12,359 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-11-07 00:57:12,359 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:57:13,107 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:57:13,191 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:13,272 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:13,441 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-11-07 00:57:13,441 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:57:13,442 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-11-07 00:57:13,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538349116] [2019-11-07 00:57:13,443 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:57:13,443 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:13,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:57:13,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-11-07 00:57:13,444 INFO L87 Difference]: Start difference. First operand 1896 states and 2800 transitions. Second operand 16 states. [2019-11-07 00:57:15,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:15,357 INFO L93 Difference]: Finished difference Result 3743 states and 5542 transitions. [2019-11-07 00:57:15,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:57:15,358 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 302 [2019-11-07 00:57:15,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:15,371 INFO L225 Difference]: With dead ends: 3743 [2019-11-07 00:57:15,371 INFO L226 Difference]: Without dead ends: 1908 [2019-11-07 00:57:15,378 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 593 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-11-07 00:57:15,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2019-11-07 00:57:15,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1906. [2019-11-07 00:57:15,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1906 states. [2019-11-07 00:57:15,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2811 transitions. [2019-11-07 00:57:15,459 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2811 transitions. Word has length 302 [2019-11-07 00:57:15,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:15,460 INFO L462 AbstractCegarLoop]: Abstraction has 1906 states and 2811 transitions. [2019-11-07 00:57:15,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:57:15,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2811 transitions. [2019-11-07 00:57:15,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2019-11-07 00:57:15,471 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:15,472 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-07 00:57:15,680 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:57:15,680 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:15,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:15,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1499489144, now seen corresponding path program 2 times [2019-11-07 00:57:15,681 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:15,681 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936782447] [2019-11-07 00:57:15,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:16,141 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-11-07 00:57:16,141 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936782447] [2019-11-07 00:57:16,141 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348985964] [2019-11-07 00:57:16,142 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:57:16,850 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-07 00:57:16,850 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:57:16,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 2553 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:57:16,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:57:17,081 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-11-07 00:57:17,082 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:57:17,538 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:17,606 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-11-07 00:57:17,745 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:57:17,745 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-11-07 00:57:17,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997324013] [2019-11-07 00:57:17,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:57:17,746 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:17,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:57:17,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:57:17,748 INFO L87 Difference]: Start difference. First operand 1906 states and 2811 transitions. Second operand 12 states. [2019-11-07 00:57:19,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:19,511 INFO L93 Difference]: Finished difference Result 3734 states and 5530 transitions. [2019-11-07 00:57:19,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:57:19,512 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 303 [2019-11-07 00:57:19,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:19,523 INFO L225 Difference]: With dead ends: 3734 [2019-11-07 00:57:19,523 INFO L226 Difference]: Without dead ends: 1908 [2019-11-07 00:57:19,530 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 600 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:57:19,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2019-11-07 00:57:19,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1906. [2019-11-07 00:57:19,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1906 states. [2019-11-07 00:57:19,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2810 transitions. [2019-11-07 00:57:19,607 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2810 transitions. Word has length 303 [2019-11-07 00:57:19,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:19,607 INFO L462 AbstractCegarLoop]: Abstraction has 1906 states and 2810 transitions. [2019-11-07 00:57:19,607 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:57:19,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2810 transitions. [2019-11-07 00:57:19,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2019-11-07 00:57:19,616 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:19,616 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-07 00:57:19,825 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:57:19,826 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:19,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:19,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1833370558, now seen corresponding path program 3 times [2019-11-07 00:57:19,826 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:19,826 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981001543] [2019-11-07 00:57:19,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:20,303 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-11-07 00:57:20,303 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981001543] [2019-11-07 00:57:20,304 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1002043987] [2019-11-07 00:57:20,304 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:57:21,399 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-07 00:57:21,399 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:57:21,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 2757 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:57:21,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:57:21,642 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-11-07 00:57:21,643 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:57:22,215 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:57:22,299 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:22,378 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:57:22,521 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-11-07 00:57:22,521 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:57:22,521 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-11-07 00:57:22,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395293288] [2019-11-07 00:57:22,523 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:57:22,523 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:57:22,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:57:22,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:57:22,524 INFO L87 Difference]: Start difference. First operand 1906 states and 2810 transitions. Second operand 15 states. [2019-11-07 00:57:25,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:57:25,215 INFO L93 Difference]: Finished difference Result 3741 states and 5537 transitions. [2019-11-07 00:57:25,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:57:25,215 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 304 [2019-11-07 00:57:25,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:57:25,227 INFO L225 Difference]: With dead ends: 3741 [2019-11-07 00:57:25,227 INFO L226 Difference]: Without dead ends: 1910 [2019-11-07 00:57:25,233 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 597 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-11-07 00:57:25,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2019-11-07 00:57:25,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1906. [2019-11-07 00:57:25,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1906 states. [2019-11-07 00:57:25,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2809 transitions. [2019-11-07 00:57:25,304 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2809 transitions. Word has length 304 [2019-11-07 00:57:25,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:57:25,304 INFO L462 AbstractCegarLoop]: Abstraction has 1906 states and 2809 transitions. [2019-11-07 00:57:25,305 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:57:25,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2809 transitions. [2019-11-07 00:57:25,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2019-11-07 00:57:25,314 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:57:25,315 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-07 00:57:25,521 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:57:25,522 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:57:25,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:57:25,523 INFO L82 PathProgramCache]: Analyzing trace with hash 329382665, now seen corresponding path program 1 times [2019-11-07 00:57:25,523 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:57:25,524 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400709190] [2019-11-07 00:57:25,524 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:57:25,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:57:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-11-07 00:57:26,004 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400709190] [2019-11-07 00:57:26,008 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015799616] [2019-11-07 00:57:26,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true