/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_spec3_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:50:57,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:50:57,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:50:58,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:50:58,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:50:58,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:50:58,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:50:58,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:50:58,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:50:58,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:50:58,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:50:58,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:50:58,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:50:58,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:50:58,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:50:58,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:50:58,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:50:58,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:50:58,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:50:58,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:50:58,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:50:58,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:50:58,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:50:58,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:50:58,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:50:58,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:50:58,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:50:58,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:50:58,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:50:58,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:50:58,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:50:58,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:50:58,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:50:58,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:50:58,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:50:58,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:50:58,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:50:58,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:50:58,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:50:58,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:50:58,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:50:58,037 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 00:50:58,051 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:50:58,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:50:58,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:50:58,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:50:58,053 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:50:58,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:50:58,053 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:50:58,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:50:58,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:50:58,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:50:58,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:50:58,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:50:58,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:50:58,055 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:50:58,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:50:58,055 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:50:58,055 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:50:58,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:50:58,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:50:58,056 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:50:58,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:50:58,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:50:58,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:50:58,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:50:58,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:50:58,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:50:58,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:50:58,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:50:58,058 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 00:50:58,358 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:50:58,370 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:50:58,374 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:50:58,375 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:50:58,376 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:50:58,376 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product27.cil.c [2019-11-07 00:50:58,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1453c2247/3c990dedb6fd4d51b8bbb6f1e2b2b0ac/FLAGf33703477 [2019-11-07 00:50:59,068 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:50:59,069 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product27.cil.c [2019-11-07 00:50:59,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1453c2247/3c990dedb6fd4d51b8bbb6f1e2b2b0ac/FLAGf33703477 [2019-11-07 00:50:59,330 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1453c2247/3c990dedb6fd4d51b8bbb6f1e2b2b0ac [2019-11-07 00:50:59,339 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:50:59,340 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:50:59,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:50:59,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:50:59,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:50:59,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:50:59" (1/1) ... [2019-11-07 00:50:59,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25b1ff1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:59, skipping insertion in model container [2019-11-07 00:50:59,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:50:59" (1/1) ... [2019-11-07 00:50:59,357 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:50:59,446 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:51:00,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:51:00,326 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:51:00,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:51:00,568 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:51:00,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:00 WrapperNode [2019-11-07 00:51:00,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:51:00,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:51:00,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:51:00,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:51:00,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:00" (1/1) ... [2019-11-07 00:51:00,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:00" (1/1) ... [2019-11-07 00:51:00,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:00" (1/1) ... [2019-11-07 00:51:00,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:00" (1/1) ... [2019-11-07 00:51:00,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:00" (1/1) ... [2019-11-07 00:51:00,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:00" (1/1) ... [2019-11-07 00:51:00,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:00" (1/1) ... [2019-11-07 00:51:00,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:51:00,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:51:00,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:51:00,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:51:00,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:00" (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 00:51:00,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:51:00,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:51:00,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:51:00,845 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-11-07 00:51:00,845 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-11-07 00:51:00,845 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:51:00,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:51:00,845 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:51:00,846 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:51:00,846 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:51:00,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:51:00,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:51:00,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:51:00,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:51:00,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:51:00,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:51:00,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-11-07 00:51:00,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-11-07 00:51:00,848 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:51:00,848 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:51:00,848 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:51:00,849 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:51:00,849 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:51:00,849 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:51:00,850 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:51:00,850 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:51:00,850 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:51:00,850 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:51:00,850 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:51:00,850 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:51:00,851 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:51:00,851 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:51:00,851 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:51:00,851 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:51:00,851 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:51:00,851 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:51:00,852 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:51:00,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:51:00,852 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:51:00,852 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:51:00,852 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:51:00,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:51:00,852 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:51:00,852 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:51:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:51:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-11-07 00:51:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:51:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:51:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Keys [2019-11-07 00:51:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:51:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:51:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:51:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:51:00,853 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:51:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:51:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:51:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:51:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:51:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:51:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:51:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:51:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:51:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:51:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:51:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:51:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:51:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:51:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:51:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:51:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:51:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:51:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:51:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:51:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:51:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:51:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:51:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:51:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:51:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:51:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:51:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:51:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:51:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:51:00,857 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:51:00,858 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:51:00,858 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:51:00,858 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:51:00,858 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:51:00,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:51:00,858 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:51:00,858 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:51:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:51:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:51:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:51:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:51:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:51:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:51:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:51:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:51:00,859 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:51:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:51:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:51:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:51:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:51:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:51:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:51:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:51:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:51:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:51:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:51:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:51:00,861 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:51:00,861 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:51:00,861 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:51:00,861 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:51:00,861 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:51:00,861 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:51:00,861 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:51:00,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:51:00,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:51:00,862 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:51:00,862 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:51:00,862 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:51:00,862 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:51:00,863 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:51:00,863 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:51:00,863 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:51:00,863 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:51:00,863 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:51:00,863 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:51:00,863 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:51:00,864 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:51:00,864 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:51:00,864 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-11-07 00:51:00,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:51:00,864 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-11-07 00:51:00,864 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:51:00,864 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:51:00,865 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:51:00,865 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:51:00,865 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:51:00,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:51:00,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:51:00,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:51:00,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:51:00,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:51:00,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:51:00,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:51:00,866 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:51:00,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:51:00,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:51:00,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:51:00,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:51:00,867 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:51:00,867 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:51:00,867 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:51:00,867 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:51:00,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-11-07 00:51:00,867 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-11-07 00:51:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:51:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:51:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:51:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:51:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:51:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:51:00,868 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:51:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:51:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:51:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:51:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:51:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:51:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:51:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:51:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:51:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:51:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:51:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:51:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:51:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:51:00,870 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:51:00,871 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:51:00,871 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:51:00,871 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:51:00,871 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:51:00,871 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:51:00,871 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:51:00,871 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:51:00,872 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:51:00,872 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:51:00,872 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:51:00,872 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:51:00,872 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:51:00,872 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:51:00,872 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:51:00,873 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:51:00,873 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:51:00,873 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:51:00,873 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:51:00,873 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:51:00,873 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:51:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:51:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-11-07 00:51:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Keys [2019-11-07 00:51:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:51:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:51:00,874 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:51:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:51:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:51:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:51:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:51:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:51:00,875 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:51:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:51:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:51:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:51:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:51:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:51:00,876 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:51:00,877 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:51:00,877 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:51:00,877 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:51:00,877 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:51:00,877 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:51:00,878 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:51:00,878 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:51:00,878 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:51:00,878 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:51:00,878 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:51:00,878 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:51:00,879 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:51:00,879 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:51:00,879 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:51:00,879 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:51:00,879 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:51:00,879 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:51:00,880 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:51:00,880 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:51:00,880 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:51:00,880 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:51:00,880 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:51:00,880 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:51:00,881 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:51:00,881 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:51:00,881 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:51:00,881 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:51:00,881 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:51:00,881 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:51:00,882 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:51:00,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:51:00,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:51:00,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:51:03,038 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:51:03,038 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:51:03,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:51:03 BoogieIcfgContainer [2019-11-07 00:51:03,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:51:03,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:51:03,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:51:03,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:51:03,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:50:59" (1/3) ... [2019-11-07 00:51:03,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63826402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:51:03, skipping insertion in model container [2019-11-07 00:51:03,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:00" (2/3) ... [2019-11-07 00:51:03,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63826402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:51:03, skipping insertion in model container [2019-11-07 00:51:03,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:51:03" (3/3) ... [2019-11-07 00:51:03,049 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product27.cil.c [2019-11-07 00:51:03,059 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:51:03,070 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:51:03,082 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:51:03,125 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:51:03,125 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:51:03,126 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:51:03,127 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:51:03,127 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:51:03,134 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:51:03,135 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:51:03,135 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:51:03,176 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states. [2019-11-07 00:51:03,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-11-07 00:51:03,209 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:03,210 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:03,213 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:03,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:03,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1666435030, now seen corresponding path program 1 times [2019-11-07 00:51:03,230 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:03,231 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701331300] [2019-11-07 00:51:03,231 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:03,848 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 00:51:03,849 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701331300] [2019-11-07 00:51:03,849 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:03,850 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:51:03,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442912341] [2019-11-07 00:51:03,856 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:51:03,858 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:03,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:51:03,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:51:03,875 INFO L87 Difference]: Start difference. First operand 631 states. Second operand 2 states. [2019-11-07 00:51:03,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:03,960 INFO L93 Difference]: Finished difference Result 937 states and 1264 transitions. [2019-11-07 00:51:03,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:51:03,961 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 179 [2019-11-07 00:51:03,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:04,003 INFO L225 Difference]: With dead ends: 937 [2019-11-07 00:51:04,003 INFO L226 Difference]: Without dead ends: 602 [2019-11-07 00:51:04,017 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 00:51:04,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2019-11-07 00:51:04,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2019-11-07 00:51:04,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2019-11-07 00:51:04,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 816 transitions. [2019-11-07 00:51:04,175 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 816 transitions. Word has length 179 [2019-11-07 00:51:04,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:04,179 INFO L462 AbstractCegarLoop]: Abstraction has 602 states and 816 transitions. [2019-11-07 00:51:04,179 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:51:04,179 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 816 transitions. [2019-11-07 00:51:04,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-11-07 00:51:04,185 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:04,185 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:04,186 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:04,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:04,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1122498688, now seen corresponding path program 1 times [2019-11-07 00:51:04,186 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:04,187 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061676606] [2019-11-07 00:51:04,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:04,496 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 00:51:04,497 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061676606] [2019-11-07 00:51:04,497 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:04,497 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:04,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639299036] [2019-11-07 00:51:04,501 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:04,502 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:04,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:04,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:04,502 INFO L87 Difference]: Start difference. First operand 602 states and 816 transitions. Second operand 3 states. [2019-11-07 00:51:04,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:04,577 INFO L93 Difference]: Finished difference Result 920 states and 1226 transitions. [2019-11-07 00:51:04,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:04,578 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2019-11-07 00:51:04,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:04,584 INFO L225 Difference]: With dead ends: 920 [2019-11-07 00:51:04,584 INFO L226 Difference]: Without dead ends: 605 [2019-11-07 00:51:04,586 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 00:51:04,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2019-11-07 00:51:04,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 604. [2019-11-07 00:51:04,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2019-11-07 00:51:04,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 818 transitions. [2019-11-07 00:51:04,614 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 818 transitions. Word has length 180 [2019-11-07 00:51:04,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:04,614 INFO L462 AbstractCegarLoop]: Abstraction has 604 states and 818 transitions. [2019-11-07 00:51:04,614 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:04,615 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 818 transitions. [2019-11-07 00:51:04,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-11-07 00:51:04,618 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:04,618 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, 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 00:51:04,619 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:04,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:04,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1965541329, now seen corresponding path program 1 times [2019-11-07 00:51:04,619 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:04,620 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324188703] [2019-11-07 00:51:04,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:04,783 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 00:51:04,783 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324188703] [2019-11-07 00:51:04,783 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:04,783 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:04,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985499298] [2019-11-07 00:51:04,784 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:04,787 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:04,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:04,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:04,788 INFO L87 Difference]: Start difference. First operand 604 states and 818 transitions. Second operand 3 states. [2019-11-07 00:51:04,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:04,836 INFO L93 Difference]: Finished difference Result 1188 states and 1640 transitions. [2019-11-07 00:51:04,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:04,837 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2019-11-07 00:51:04,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:04,852 INFO L225 Difference]: With dead ends: 1188 [2019-11-07 00:51:04,852 INFO L226 Difference]: Without dead ends: 649 [2019-11-07 00:51:04,855 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 00:51:04,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2019-11-07 00:51:04,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 648. [2019-11-07 00:51:04,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2019-11-07 00:51:04,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 893 transitions. [2019-11-07 00:51:04,906 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 893 transitions. Word has length 192 [2019-11-07 00:51:04,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:04,907 INFO L462 AbstractCegarLoop]: Abstraction has 648 states and 893 transitions. [2019-11-07 00:51:04,907 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:04,907 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 893 transitions. [2019-11-07 00:51:04,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-11-07 00:51:04,919 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:04,919 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, 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 00:51:04,920 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:04,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:04,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1219929251, now seen corresponding path program 1 times [2019-11-07 00:51:04,924 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:04,924 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804424315] [2019-11-07 00:51:04,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:05,284 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 00:51:05,284 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804424315] [2019-11-07 00:51:05,286 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:05,286 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:05,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980946927] [2019-11-07 00:51:05,287 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:05,288 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:05,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:05,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:05,289 INFO L87 Difference]: Start difference. First operand 648 states and 893 transitions. Second operand 3 states. [2019-11-07 00:51:05,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:05,331 INFO L93 Difference]: Finished difference Result 1317 states and 1860 transitions. [2019-11-07 00:51:05,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:05,331 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2019-11-07 00:51:05,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:05,337 INFO L225 Difference]: With dead ends: 1317 [2019-11-07 00:51:05,337 INFO L226 Difference]: Without dead ends: 734 [2019-11-07 00:51:05,339 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 00:51:05,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2019-11-07 00:51:05,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 733. [2019-11-07 00:51:05,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2019-11-07 00:51:05,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1037 transitions. [2019-11-07 00:51:05,373 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1037 transitions. Word has length 193 [2019-11-07 00:51:05,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:05,374 INFO L462 AbstractCegarLoop]: Abstraction has 733 states and 1037 transitions. [2019-11-07 00:51:05,374 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:05,374 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1037 transitions. [2019-11-07 00:51:05,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-11-07 00:51:05,379 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:05,380 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, 1, 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 00:51:05,380 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:05,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:05,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1851782167, now seen corresponding path program 1 times [2019-11-07 00:51:05,381 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:05,381 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940130605] [2019-11-07 00:51:05,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:05,839 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 00:51:05,840 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940130605] [2019-11-07 00:51:05,840 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:05,841 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 00:51:05,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329174464] [2019-11-07 00:51:05,843 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:51:05,843 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:05,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:51:05,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:51:05,845 INFO L87 Difference]: Start difference. First operand 733 states and 1037 transitions. Second operand 12 states. [2019-11-07 00:51:20,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:20,108 INFO L93 Difference]: Finished difference Result 3396 states and 4677 transitions. [2019-11-07 00:51:20,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-11-07 00:51:20,109 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 196 [2019-11-07 00:51:20,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:20,136 INFO L225 Difference]: With dead ends: 3396 [2019-11-07 00:51:20,136 INFO L226 Difference]: Without dead ends: 3082 [2019-11-07 00:51:20,140 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=377, Invalid=1515, Unknown=0, NotChecked=0, Total=1892 [2019-11-07 00:51:20,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3082 states. [2019-11-07 00:51:20,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3082 to 3057. [2019-11-07 00:51:20,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3057 states. [2019-11-07 00:51:20,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3057 states to 3057 states and 4147 transitions. [2019-11-07 00:51:20,344 INFO L78 Accepts]: Start accepts. Automaton has 3057 states and 4147 transitions. Word has length 196 [2019-11-07 00:51:20,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:20,345 INFO L462 AbstractCegarLoop]: Abstraction has 3057 states and 4147 transitions. [2019-11-07 00:51:20,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:51:20,345 INFO L276 IsEmpty]: Start isEmpty. Operand 3057 states and 4147 transitions. [2019-11-07 00:51:20,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-11-07 00:51:20,350 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:20,350 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, 1, 1, 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 00:51:20,351 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:20,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:20,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1899215644, now seen corresponding path program 1 times [2019-11-07 00:51:20,351 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:20,351 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457527641] [2019-11-07 00:51:20,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:20,682 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 00:51:20,682 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457527641] [2019-11-07 00:51:20,682 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:20,682 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-11-07 00:51:20,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714453233] [2019-11-07 00:51:20,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-07 00:51:20,684 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:20,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-07 00:51:20,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:51:20,684 INFO L87 Difference]: Start difference. First operand 3057 states and 4147 transitions. Second operand 18 states. [2019-11-07 00:51:21,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:21,180 INFO L93 Difference]: Finished difference Result 5479 states and 7449 transitions. [2019-11-07 00:51:21,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-07 00:51:21,181 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 197 [2019-11-07 00:51:21,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:21,198 INFO L225 Difference]: With dead ends: 5479 [2019-11-07 00:51:21,198 INFO L226 Difference]: Without dead ends: 2823 [2019-11-07 00:51:21,207 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:51:21,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2019-11-07 00:51:21,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2821. [2019-11-07 00:51:21,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2821 states. [2019-11-07 00:51:21,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 3828 transitions. [2019-11-07 00:51:21,339 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 3828 transitions. Word has length 197 [2019-11-07 00:51:21,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:21,340 INFO L462 AbstractCegarLoop]: Abstraction has 2821 states and 3828 transitions. [2019-11-07 00:51:21,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-07 00:51:21,340 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 3828 transitions. [2019-11-07 00:51:21,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-11-07 00:51:21,345 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:21,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:51:21,346 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:21,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:21,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1034670512, now seen corresponding path program 1 times [2019-11-07 00:51:21,347 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:21,347 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132577167] [2019-11-07 00:51:21,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:23,781 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-07 00:51:23,781 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132577167] [2019-11-07 00:51:23,781 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242502073] [2019-11-07 00:51:23,782 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 00:51:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:24,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 2974 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:51:24,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:24,883 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:51:24,884 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:25,312 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:51:25,465 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:25,608 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:25,862 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 00:51:25,862 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:51:25,863 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [55, 9] total 67 [2019-11-07 00:51:25,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250041117] [2019-11-07 00:51:25,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:51:25,864 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:25,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:51:25,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=4248, Unknown=0, NotChecked=0, Total=4422 [2019-11-07 00:51:25,866 INFO L87 Difference]: Start difference. First operand 2821 states and 3828 transitions. Second operand 9 states. [2019-11-07 00:51:28,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:28,648 INFO L93 Difference]: Finished difference Result 5620 states and 7636 transitions. [2019-11-07 00:51:28,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:51:28,648 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 206 [2019-11-07 00:51:28,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:28,672 INFO L225 Difference]: With dead ends: 5620 [2019-11-07 00:51:28,673 INFO L226 Difference]: Without dead ends: 2835 [2019-11-07 00:51:28,691 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 400 SyntacticMatches, 7 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=201, Invalid=4629, Unknown=0, NotChecked=0, Total=4830 [2019-11-07 00:51:28,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2019-11-07 00:51:28,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2835. [2019-11-07 00:51:28,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2835 states. [2019-11-07 00:51:28,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2835 states to 2835 states and 3846 transitions. [2019-11-07 00:51:28,875 INFO L78 Accepts]: Start accepts. Automaton has 2835 states and 3846 transitions. Word has length 206 [2019-11-07 00:51:28,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:28,875 INFO L462 AbstractCegarLoop]: Abstraction has 2835 states and 3846 transitions. [2019-11-07 00:51:28,875 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:51:28,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2835 states and 3846 transitions. [2019-11-07 00:51:28,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-11-07 00:51:28,880 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:28,881 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:51:29,088 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:29,088 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:29,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:29,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1932089805, now seen corresponding path program 1 times [2019-11-07 00:51:29,089 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:29,090 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344185879] [2019-11-07 00:51:29,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:31,421 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-07 00:51:31,422 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344185879] [2019-11-07 00:51:31,422 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855350834] [2019-11-07 00:51:31,422 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 00:51:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:32,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 2975 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:51:32,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:51:32,340 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:32,680 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:32,802 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:32,860 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 00:51:32,861 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:51:32,861 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [53, 7] total 61 [2019-11-07 00:51:32,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221591549] [2019-11-07 00:51:32,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:51:32,862 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:32,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:51:32,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=3511, Unknown=0, NotChecked=0, Total=3660 [2019-11-07 00:51:32,863 INFO L87 Difference]: Start difference. First operand 2835 states and 3846 transitions. Second operand 7 states. [2019-11-07 00:51:34,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:34,138 INFO L93 Difference]: Finished difference Result 5621 states and 7642 transitions. [2019-11-07 00:51:34,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:51:34,139 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 207 [2019-11-07 00:51:34,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:34,158 INFO L225 Difference]: With dead ends: 5621 [2019-11-07 00:51:34,158 INFO L226 Difference]: Without dead ends: 2837 [2019-11-07 00:51:34,169 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 407 SyntacticMatches, 6 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=167, Invalid=3739, Unknown=0, NotChecked=0, Total=3906 [2019-11-07 00:51:34,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2019-11-07 00:51:34,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 2837. [2019-11-07 00:51:34,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2837 states. [2019-11-07 00:51:34,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2837 states to 2837 states and 3849 transitions. [2019-11-07 00:51:34,291 INFO L78 Accepts]: Start accepts. Automaton has 2837 states and 3849 transitions. Word has length 207 [2019-11-07 00:51:34,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:34,294 INFO L462 AbstractCegarLoop]: Abstraction has 2837 states and 3849 transitions. [2019-11-07 00:51:34,294 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:51:34,294 INFO L276 IsEmpty]: Start isEmpty. Operand 2837 states and 3849 transitions. [2019-11-07 00:51:34,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2019-11-07 00:51:34,300 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:34,300 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-11-07 00:51:34,508 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:34,508 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:34,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:34,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1667340868, now seen corresponding path program 1 times [2019-11-07 00:51:34,509 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:34,509 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925382655] [2019-11-07 00:51:34,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat