/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_spec0_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:46:03,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:46:03,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:46:03,823 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:46:03,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:46:03,825 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:46:03,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:46:03,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:46:03,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:46:03,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:46:03,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:46:03,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:46:03,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:46:03,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:46:03,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:46:03,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:46:03,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:46:03,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:46:03,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:46:03,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:46:03,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:46:03,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:46:03,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:46:03,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:46:03,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:46:03,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:46:03,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:46:03,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:46:03,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:46:03,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:46:03,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:46:03,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:46:03,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:46:03,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:46:03,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:46:03,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:46:03,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:46:03,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:46:03,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:46:03,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:46:03,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:46:03,876 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 00:46:03,890 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:46:03,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:46:03,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:46:03,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:46:03,892 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:46:03,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:46:03,892 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:46:03,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:46:03,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:46:03,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:46:03,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:46:03,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:46:03,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:46:03,893 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:46:03,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:46:03,894 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:46:03,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:46:03,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:46:03,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:46:03,895 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:46:03,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:46:03,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:46:03,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:46:03,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:46:03,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:46:03,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:46:03,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:46:03,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:46:03,896 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 00:46:04,206 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:46:04,220 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:46:04,223 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:46:04,225 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:46:04,225 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:46:04,226 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product31.cil.c [2019-11-07 00:46:04,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f34f3e1b6/9981b13671dd487b9881a99e6277c796/FLAGe70e2a23f [2019-11-07 00:46:04,999 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:46:05,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product31.cil.c [2019-11-07 00:46:05,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f34f3e1b6/9981b13671dd487b9881a99e6277c796/FLAGe70e2a23f [2019-11-07 00:46:05,084 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f34f3e1b6/9981b13671dd487b9881a99e6277c796 [2019-11-07 00:46:05,093 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:46:05,095 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:46:05,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:46:05,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:46:05,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:46:05,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:46:05" (1/1) ... [2019-11-07 00:46:05,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22830b92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:05, skipping insertion in model container [2019-11-07 00:46:05,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:46:05" (1/1) ... [2019-11-07 00:46:05,112 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:46:05,185 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:46:05,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:46:05,960 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:46:06,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:46:06,274 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:46:06,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:06 WrapperNode [2019-11-07 00:46:06,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:46:06,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:46:06,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:46:06,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:46:06,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:06" (1/1) ... [2019-11-07 00:46:06,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:06" (1/1) ... [2019-11-07 00:46:06,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:06" (1/1) ... [2019-11-07 00:46:06,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:06" (1/1) ... [2019-11-07 00:46:06,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:06" (1/1) ... [2019-11-07 00:46:06,437 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:06" (1/1) ... [2019-11-07 00:46:06,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:06" (1/1) ... [2019-11-07 00:46:06,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:46:06,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:46:06,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:46:06,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:46:06,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:06" (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 00:46:06,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:46:06,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:46:06,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:46:06,551 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:46:06,551 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:46:06,551 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:46:06,552 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:46:06,552 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:46:06,552 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:46:06,552 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:46:06,552 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:46:06,553 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:46:06,553 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:46:06,553 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:46:06,553 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:46:06,554 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:46:06,554 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:46:06,554 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:46:06,554 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:46:06,554 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:46:06,555 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:46:06,555 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:46:06,555 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:46:06,555 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:46:06,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:46:06,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:46:06,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:46:06,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:46:06,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:46:06,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:46:06,557 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:46:06,557 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:46:06,557 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:46:06,557 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:46:06,557 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:46:06,557 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:46:06,557 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:46:06,558 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:46:06,558 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:46:06,558 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:46:06,558 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:46:06,558 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:46:06,558 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:46:06,558 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:46:06,559 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:46:06,559 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:46:06,559 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:46:06,559 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:46:06,559 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:46:06,559 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:46:06,560 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:46:06,560 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:46:06,560 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:46:06,560 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-11-07 00:46:06,560 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:46:06,560 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:46:06,560 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:46:06,561 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:46:06,561 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:46:06,561 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:46:06,561 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:46:06,561 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:46:06,561 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:46:06,561 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:46:06,562 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:46:06,562 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:46:06,562 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:46:06,562 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:46:06,562 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:46:06,562 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:46:06,563 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:46:06,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__DecryptForward_spec__1 [2019-11-07 00:46:06,563 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:46:06,563 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:46:06,563 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:46:06,563 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:46:06,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:46:06,564 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:46:06,564 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:46:06,564 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:46:06,564 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:46:06,564 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:46:06,564 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:46:06,565 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:46:06,565 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:46:06,565 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:46:06,565 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:46:06,565 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:46:06,565 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:46:06,566 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:46:06,566 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:46:06,566 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:46:06,566 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:46:06,566 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:46:06,566 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:46:06,566 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:46:06,567 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:46:06,567 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:46:06,567 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:46:06,567 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:46:06,567 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:46:06,567 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:46:06,567 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:46:06,568 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:46:06,568 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:46:06,568 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:46:06,568 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:46:06,568 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Encrypt [2019-11-07 00:46:06,568 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-11-07 00:46:06,568 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:46:06,569 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:46:06,569 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:46:06,569 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:46:06,569 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:46:06,569 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:46:06,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:46:06,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:46:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:46:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:46:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:46:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:46:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:46:06,570 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:46:06,571 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:46:06,571 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:46:06,571 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:46:06,571 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:46:06,571 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:46:06,571 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:46:06,571 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:46:06,572 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:46:06,572 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:46:06,572 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:46:06,572 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:46:06,572 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:46:06,572 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:46:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:46:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:46:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:46:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:46:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:46:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:46:06,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:46:06,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:46:06,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:46:06,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:46:06,574 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:46:06,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:46:06,574 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:46:06,575 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:46:06,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:46:06,575 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:46:06,575 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:46:06,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:46:06,575 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:46:06,575 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:46:06,576 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:46:06,576 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:46:06,576 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:46:06,576 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:46:06,576 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:46:06,576 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:46:06,576 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:46:06,576 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:46:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:46:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:46:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:46:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:46:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:46:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:46:06,577 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:46:06,578 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:46:06,578 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:46:06,578 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:46:06,578 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:46:06,578 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:46:06,578 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:46:06,578 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:46:06,578 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:46:06,579 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:46:06,579 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:46:06,579 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:46:06,579 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:46:06,579 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:46:06,579 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:46:06,579 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:46:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:46:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:46:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:46:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:46:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:46:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:46:06,580 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:46:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:46:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:46:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:46:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:46:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:46:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:46:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:46:06,581 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:46:06,582 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:46:06,582 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:46:06,582 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:46:06,582 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:46:06,582 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:46:06,582 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:46:06,583 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:46:06,583 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:46:06,583 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:46:06,583 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:46:06,583 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:46:06,583 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:46:06,583 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-11-07 00:46:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:46:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:46:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:46:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__DecryptForward_spec__1 [2019-11-07 00:46:06,584 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:46:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:46:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:46:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:46:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:46:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:46:06,585 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:46:06,586 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:46:06,586 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:46:06,586 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:46:06,586 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:46:06,586 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:46:06,586 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:46:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:46:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:46:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:46:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:46:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:46:06,587 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:46:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:46:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Encrypt [2019-11-07 00:46:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-11-07 00:46:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:46:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:46:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:46:06,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:46:06,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:46:08,710 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:46:08,711 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:46:08,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:46:08 BoogieIcfgContainer [2019-11-07 00:46:08,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:46:08,714 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:46:08,714 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:46:08,717 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:46:08,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:46:05" (1/3) ... [2019-11-07 00:46:08,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2814d14e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:46:08, skipping insertion in model container [2019-11-07 00:46:08,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:46:06" (2/3) ... [2019-11-07 00:46:08,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2814d14e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:46:08, skipping insertion in model container [2019-11-07 00:46:08,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:46:08" (3/3) ... [2019-11-07 00:46:08,721 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec0_product31.cil.c [2019-11-07 00:46:08,731 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:46:08,740 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:46:08,752 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:46:08,780 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:46:08,780 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:46:08,781 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:46:08,781 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:46:08,781 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:46:08,781 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:46:08,781 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:46:08,781 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:46:08,809 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states. [2019-11-07 00:46:08,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-11-07 00:46:08,835 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:08,836 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:46:08,838 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:08,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:08,844 INFO L82 PathProgramCache]: Analyzing trace with hash -502601310, now seen corresponding path program 1 times [2019-11-07 00:46:08,855 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:08,855 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534609443] [2019-11-07 00:46:08,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:09,475 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-07 00:46:09,476 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534609443] [2019-11-07 00:46:09,477 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:09,477 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:46:09,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60011012] [2019-11-07 00:46:09,485 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:46:09,487 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:09,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:46:09,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:46:09,505 INFO L87 Difference]: Start difference. First operand 555 states. Second operand 2 states. [2019-11-07 00:46:09,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:09,597 INFO L93 Difference]: Finished difference Result 852 states and 1120 transitions. [2019-11-07 00:46:09,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:46:09,599 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 221 [2019-11-07 00:46:09,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:09,632 INFO L225 Difference]: With dead ends: 852 [2019-11-07 00:46:09,633 INFO L226 Difference]: Without dead ends: 532 [2019-11-07 00:46:09,641 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 00:46:09,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2019-11-07 00:46:09,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2019-11-07 00:46:09,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2019-11-07 00:46:09,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 702 transitions. [2019-11-07 00:46:09,740 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 702 transitions. Word has length 221 [2019-11-07 00:46:09,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:09,743 INFO L462 AbstractCegarLoop]: Abstraction has 532 states and 702 transitions. [2019-11-07 00:46:09,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:46:09,743 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 702 transitions. [2019-11-07 00:46:09,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2019-11-07 00:46:09,749 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:09,749 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:46:09,749 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:09,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:09,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1959572601, now seen corresponding path program 1 times [2019-11-07 00:46:09,750 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:09,750 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315512048] [2019-11-07 00:46:09,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:10,039 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-07 00:46:10,040 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315512048] [2019-11-07 00:46:10,040 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:10,040 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:46:10,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028065644] [2019-11-07 00:46:10,053 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:46:10,054 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:10,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:46:10,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:46:10,057 INFO L87 Difference]: Start difference. First operand 532 states and 702 transitions. Second operand 3 states. [2019-11-07 00:46:10,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:10,141 INFO L93 Difference]: Finished difference Result 835 states and 1084 transitions. [2019-11-07 00:46:10,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:46:10,142 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 222 [2019-11-07 00:46:10,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:10,153 INFO L225 Difference]: With dead ends: 835 [2019-11-07 00:46:10,153 INFO L226 Difference]: Without dead ends: 535 [2019-11-07 00:46:10,156 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 00:46:10,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2019-11-07 00:46:10,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 534. [2019-11-07 00:46:10,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 534 states. [2019-11-07 00:46:10,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 704 transitions. [2019-11-07 00:46:10,202 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 704 transitions. Word has length 222 [2019-11-07 00:46:10,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:10,205 INFO L462 AbstractCegarLoop]: Abstraction has 534 states and 704 transitions. [2019-11-07 00:46:10,205 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:46:10,205 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 704 transitions. [2019-11-07 00:46:10,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-11-07 00:46:10,211 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:10,211 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:46:10,212 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:10,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:10,215 INFO L82 PathProgramCache]: Analyzing trace with hash 804976229, now seen corresponding path program 1 times [2019-11-07 00:46:10,215 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:10,215 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415149373] [2019-11-07 00:46:10,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:10,394 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-07 00:46:10,395 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415149373] [2019-11-07 00:46:10,395 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:10,395 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:46:10,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279837638] [2019-11-07 00:46:10,396 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:46:10,397 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:10,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:46:10,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:46:10,397 INFO L87 Difference]: Start difference. First operand 534 states and 704 transitions. Second operand 3 states. [2019-11-07 00:46:10,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:10,445 INFO L93 Difference]: Finished difference Result 1044 states and 1406 transitions. [2019-11-07 00:46:10,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:46:10,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 228 [2019-11-07 00:46:10,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:10,452 INFO L225 Difference]: With dead ends: 1044 [2019-11-07 00:46:10,452 INFO L226 Difference]: Without dead ends: 575 [2019-11-07 00:46:10,454 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 00:46:10,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2019-11-07 00:46:10,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 574. [2019-11-07 00:46:10,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 574 states. [2019-11-07 00:46:10,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 773 transitions. [2019-11-07 00:46:10,495 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 773 transitions. Word has length 228 [2019-11-07 00:46:10,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:10,496 INFO L462 AbstractCegarLoop]: Abstraction has 574 states and 773 transitions. [2019-11-07 00:46:10,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:46:10,496 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 773 transitions. [2019-11-07 00:46:10,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-11-07 00:46:10,505 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:10,505 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:46:10,506 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:10,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:10,507 INFO L82 PathProgramCache]: Analyzing trace with hash 621329804, now seen corresponding path program 1 times [2019-11-07 00:46:10,507 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:10,507 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155088906] [2019-11-07 00:46:10,508 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:11,223 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-11-07 00:46:11,224 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155088906] [2019-11-07 00:46:11,225 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:11,225 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-11-07 00:46:11,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283149466] [2019-11-07 00:46:11,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-07 00:46:11,227 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:11,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-07 00:46:11,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:46:11,230 INFO L87 Difference]: Start difference. First operand 574 states and 773 transitions. Second operand 19 states. [2019-11-07 00:46:16,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:16,553 INFO L93 Difference]: Finished difference Result 2042 states and 2759 transitions. [2019-11-07 00:46:16,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-11-07 00:46:16,554 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 229 [2019-11-07 00:46:16,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:16,570 INFO L225 Difference]: With dead ends: 2042 [2019-11-07 00:46:16,570 INFO L226 Difference]: Without dead ends: 1755 [2019-11-07 00:46:16,573 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2019-11-07 00:46:16,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2019-11-07 00:46:16,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1718. [2019-11-07 00:46:16,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1718 states. [2019-11-07 00:46:16,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2329 transitions. [2019-11-07 00:46:16,694 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2329 transitions. Word has length 229 [2019-11-07 00:46:16,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:16,695 INFO L462 AbstractCegarLoop]: Abstraction has 1718 states and 2329 transitions. [2019-11-07 00:46:16,695 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-07 00:46:16,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2329 transitions. [2019-11-07 00:46:16,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-11-07 00:46:16,703 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:16,704 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:46:16,704 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:16,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:16,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1144463917, now seen corresponding path program 1 times [2019-11-07 00:46:16,705 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:16,705 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269757818] [2019-11-07 00:46:16,706 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:17,069 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-11-07 00:46:17,070 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269757818] [2019-11-07 00:46:17,070 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:46:17,070 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-11-07 00:46:17,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653461248] [2019-11-07 00:46:17,071 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:46:17,072 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:17,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:46:17,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-11-07 00:46:17,073 INFO L87 Difference]: Start difference. First operand 1718 states and 2329 transitions. Second operand 15 states. [2019-11-07 00:46:20,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:20,633 INFO L93 Difference]: Finished difference Result 3019 states and 4070 transitions. [2019-11-07 00:46:20,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-11-07 00:46:20,634 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 230 [2019-11-07 00:46:20,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:20,647 INFO L225 Difference]: With dead ends: 3019 [2019-11-07 00:46:20,647 INFO L226 Difference]: Without dead ends: 1820 [2019-11-07 00:46:20,653 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2019-11-07 00:46:20,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2019-11-07 00:46:20,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1788. [2019-11-07 00:46:20,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1788 states. [2019-11-07 00:46:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1788 states to 1788 states and 2443 transitions. [2019-11-07 00:46:20,770 INFO L78 Accepts]: Start accepts. Automaton has 1788 states and 2443 transitions. Word has length 230 [2019-11-07 00:46:20,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:20,771 INFO L462 AbstractCegarLoop]: Abstraction has 1788 states and 2443 transitions. [2019-11-07 00:46:20,772 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:46:20,772 INFO L276 IsEmpty]: Start isEmpty. Operand 1788 states and 2443 transitions. [2019-11-07 00:46:20,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-11-07 00:46:20,782 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:20,782 INFO L410 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:46:20,783 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:20,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:20,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1546434591, now seen corresponding path program 1 times [2019-11-07 00:46:20,784 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:20,784 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571749553] [2019-11-07 00:46:20,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:20,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:20,969 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-07 00:46:20,970 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571749553] [2019-11-07 00:46:20,970 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25514967] [2019-11-07 00:46:20,970 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 00:46:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:21,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 2938 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:46:21,630 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:46:21,869 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:46:21,870 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:46:22,229 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:46:22,315 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:46:22,375 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:46:22,484 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-11-07 00:46:22,484 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:46:22,485 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5, 9] total 18 [2019-11-07 00:46:22,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018921654] [2019-11-07 00:46:22,486 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:46:22,486 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:22,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:46:22,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:46:22,486 INFO L87 Difference]: Start difference. First operand 1788 states and 2443 transitions. Second operand 9 states. [2019-11-07 00:46:23,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:23,811 INFO L93 Difference]: Finished difference Result 3554 states and 4866 transitions. [2019-11-07 00:46:23,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:46:23,812 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 233 [2019-11-07 00:46:23,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:23,824 INFO L225 Difference]: With dead ends: 3554 [2019-11-07 00:46:23,824 INFO L226 Difference]: Without dead ends: 1802 [2019-11-07 00:46:23,831 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 450 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2019-11-07 00:46:23,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2019-11-07 00:46:23,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1802. [2019-11-07 00:46:23,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1802 states. [2019-11-07 00:46:23,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2461 transitions. [2019-11-07 00:46:23,936 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 2461 transitions. Word has length 233 [2019-11-07 00:46:23,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:23,937 INFO L462 AbstractCegarLoop]: Abstraction has 1802 states and 2461 transitions. [2019-11-07 00:46:23,937 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:46:23,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 2461 transitions. [2019-11-07 00:46:23,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-11-07 00:46:23,944 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:23,945 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:46:24,153 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:46:24,154 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:24,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:24,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1460245329, now seen corresponding path program 1 times [2019-11-07 00:46:24,155 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:24,155 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178012089] [2019-11-07 00:46:24,156 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:24,406 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-11-07 00:46:24,410 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178012089] [2019-11-07 00:46:24,411 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433385946] [2019-11-07 00:46:24,411 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 00:46:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:25,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 2939 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:46:25,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:46:25,343 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:46:25,344 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:46:25,591 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:46:25,631 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:46:25,692 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-11-07 00:46:25,693 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:46:25,693 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5, 7] total 14 [2019-11-07 00:46:25,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778714861] [2019-11-07 00:46:25,694 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:46:25,694 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:25,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:46:25,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2019-11-07 00:46:25,695 INFO L87 Difference]: Start difference. First operand 1802 states and 2461 transitions. Second operand 7 states. [2019-11-07 00:46:26,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:26,796 INFO L93 Difference]: Finished difference Result 3557 states and 4875 transitions. [2019-11-07 00:46:26,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:46:26,797 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 234 [2019-11-07 00:46:26,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:26,809 INFO L225 Difference]: With dead ends: 3557 [2019-11-07 00:46:26,810 INFO L226 Difference]: Without dead ends: 1806 [2019-11-07 00:46:26,816 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 457 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:46:26,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2019-11-07 00:46:26,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1806. [2019-11-07 00:46:26,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1806 states. [2019-11-07 00:46:26,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2466 transitions. [2019-11-07 00:46:26,905 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2466 transitions. Word has length 234 [2019-11-07 00:46:26,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:26,905 INFO L462 AbstractCegarLoop]: Abstraction has 1806 states and 2466 transitions. [2019-11-07 00:46:26,905 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:46:26,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2466 transitions. [2019-11-07 00:46:26,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-11-07 00:46:26,912 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:26,913 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:46:27,120 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:46:27,120 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:27,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:27,122 INFO L82 PathProgramCache]: Analyzing trace with hash 80000269, now seen corresponding path program 1 times [2019-11-07 00:46:27,122 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:27,122 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652026584] [2019-11-07 00:46:27,122 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:27,311 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-11-07 00:46:27,311 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652026584] [2019-11-07 00:46:27,311 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013295194] [2019-11-07 00:46:27,311 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 00:46:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:28,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:46:28,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:46:28,172 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:46:28,172 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:46:28,518 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:46:28,590 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:46:28,642 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:46:28,762 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-11-07 00:46:28,762 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:46:28,762 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [5] total 19 [2019-11-07 00:46:28,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810691114] [2019-11-07 00:46:28,764 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:46:28,764 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:28,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:46:28,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:46:28,765 INFO L87 Difference]: Start difference. First operand 1806 states and 2466 transitions. Second operand 16 states. [2019-11-07 00:46:30,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:30,393 INFO L93 Difference]: Finished difference Result 3563 states and 4874 transitions. [2019-11-07 00:46:30,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:46:30,396 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 236 [2019-11-07 00:46:30,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:30,407 INFO L225 Difference]: With dead ends: 3563 [2019-11-07 00:46:30,407 INFO L226 Difference]: Without dead ends: 1818 [2019-11-07 00:46:30,413 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 456 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:46:30,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2019-11-07 00:46:30,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1816. [2019-11-07 00:46:30,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1816 states. [2019-11-07 00:46:30,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 2477 transitions. [2019-11-07 00:46:30,493 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 2477 transitions. Word has length 236 [2019-11-07 00:46:30,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:30,493 INFO L462 AbstractCegarLoop]: Abstraction has 1816 states and 2477 transitions. [2019-11-07 00:46:30,493 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:46:30,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 2477 transitions. [2019-11-07 00:46:30,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-11-07 00:46:30,504 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:30,505 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:46:30,712 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:46:30,713 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:30,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:30,713 INFO L82 PathProgramCache]: Analyzing trace with hash 183042301, now seen corresponding path program 1 times [2019-11-07 00:46:30,713 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:30,713 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116951467] [2019-11-07 00:46:30,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:30,893 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-11-07 00:46:30,894 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116951467] [2019-11-07 00:46:30,894 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583508004] [2019-11-07 00:46:30,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 00:46:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:31,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:46:31,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:46:31,630 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:46:31,630 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:46:31,972 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:46:32,146 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:46:32,209 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:46:32,357 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-11-07 00:46:32,358 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:46:32,358 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [5] total 18 [2019-11-07 00:46:32,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312418101] [2019-11-07 00:46:32,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:46:32,360 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:32,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:46:32,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:46:32,361 INFO L87 Difference]: Start difference. First operand 1816 states and 2477 transitions. Second operand 15 states. [2019-11-07 00:46:34,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:34,131 INFO L93 Difference]: Finished difference Result 3561 states and 4871 transitions. [2019-11-07 00:46:34,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:46:34,131 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 236 [2019-11-07 00:46:34,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:34,143 INFO L225 Difference]: With dead ends: 3561 [2019-11-07 00:46:34,143 INFO L226 Difference]: Without dead ends: 1820 [2019-11-07 00:46:34,158 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 456 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2019-11-07 00:46:34,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2019-11-07 00:46:34,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1816. [2019-11-07 00:46:34,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1816 states. [2019-11-07 00:46:34,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 2476 transitions. [2019-11-07 00:46:34,296 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 2476 transitions. Word has length 236 [2019-11-07 00:46:34,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:34,297 INFO L462 AbstractCegarLoop]: Abstraction has 1816 states and 2476 transitions. [2019-11-07 00:46:34,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:46:34,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 2476 transitions. [2019-11-07 00:46:34,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-11-07 00:46:34,305 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:34,306 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:46:34,513 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:46:34,513 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:46:34,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:46:34,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1646985578, now seen corresponding path program 1 times [2019-11-07 00:46:34,515 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:46:34,515 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007343485] [2019-11-07 00:46:34,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:46:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:34,701 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-11-07 00:46:34,702 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007343485] [2019-11-07 00:46:34,702 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870923990] [2019-11-07 00:46:34,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 00:46:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:46:35,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:46:35,410 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:46:35,656 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:46:35,657 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:46:35,981 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:46:36,023 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:46:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-11-07 00:46:36,123 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:46:36,123 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [5] total 15 [2019-11-07 00:46:36,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855867817] [2019-11-07 00:46:36,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:46:36,125 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:46:36,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:46:36,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2019-11-07 00:46:36,125 INFO L87 Difference]: Start difference. First operand 1816 states and 2476 transitions. Second operand 12 states. [2019-11-07 00:46:38,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:46:38,184 INFO L93 Difference]: Finished difference Result 3554 states and 4861 transitions. [2019-11-07 00:46:38,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:46:38,185 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 237 [2019-11-07 00:46:38,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:46:38,196 INFO L225 Difference]: With dead ends: 3554 [2019-11-07 00:46:38,196 INFO L226 Difference]: Without dead ends: 1818 [2019-11-07 00:46:38,202 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 463 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:46:38,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2019-11-07 00:46:38,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1816. [2019-11-07 00:46:38,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1816 states. [2019-11-07 00:46:38,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 2475 transitions. [2019-11-07 00:46:38,279 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 2475 transitions. Word has length 237 [2019-11-07 00:46:38,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:46:38,280 INFO L462 AbstractCegarLoop]: Abstraction has 1816 states and 2475 transitions. [2019-11-07 00:46:38,280 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:46:38,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 2475 transitions. [2019-11-07 00:46:38,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2019-11-07 00:46:38,287 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:46:38,288 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]