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_spec27_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:15:15,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:15:15,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:15:15,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:15:15,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:15:15,466 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:15:15,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:15:15,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:15:15,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:15:15,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:15:15,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:15:15,474 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:15:15,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:15:15,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:15:15,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:15:15,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:15:15,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:15:15,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:15:15,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:15:15,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:15:15,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:15:15,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:15:15,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:15:15,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:15:15,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:15:15,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:15:15,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:15:15,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:15:15,493 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:15:15,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:15:15,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:15:15,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:15:15,495 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:15:15,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:15:15,497 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:15:15,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:15:15,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:15:15,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:15:15,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:15:15,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:15:15,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:15:15,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:15:15,515 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:15:15,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:15:15,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:15:15,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:15:15,519 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:15:15,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:15:15,519 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:15:15,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:15:15,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:15:15,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:15:15,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:15:15,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:15:15,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:15:15,521 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:15:15,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:15:15,522 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:15:15,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:15:15,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:15:15,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:15:15,523 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:15:15,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:15:15,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:15,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:15:15,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:15:15,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:15:15,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:15:15,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:15:15,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:15:15,526 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 [2019-10-13 21:15:15,813 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:15:15,827 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:15:15,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:15:15,832 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:15:15,832 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:15:15,833 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product33.cil.c [2019-10-13 21:15:15,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fb3078fe/4a98de1c2f1043b1aedfbfd50d024b9c/FLAGaf5360fd2 [2019-10-13 21:15:16,606 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:15:16,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product33.cil.c [2019-10-13 21:15:16,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fb3078fe/4a98de1c2f1043b1aedfbfd50d024b9c/FLAGaf5360fd2 [2019-10-13 21:15:16,740 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5fb3078fe/4a98de1c2f1043b1aedfbfd50d024b9c [2019-10-13 21:15:16,751 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:15:16,752 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:15:16,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:16,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:15:16,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:15:16,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:16" (1/1) ... [2019-10-13 21:15:16,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6608a0f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:16, skipping insertion in model container [2019-10-13 21:15:16,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:16" (1/1) ... [2019-10-13 21:15:16,769 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:15:16,853 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:15:17,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:17,648 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:15:17,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:17,901 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:15:17,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17 WrapperNode [2019-10-13 21:15:17,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:17,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:15:17,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:15:17,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:15:17,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... [2019-10-13 21:15:17,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... [2019-10-13 21:15:17,984 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... [2019-10-13 21:15:17,984 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... [2019-10-13 21:15:18,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... [2019-10-13 21:15:18,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... [2019-10-13 21:15:18,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... [2019-10-13 21:15:18,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:15:18,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:15:18,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:15:18,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:15:18,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:18,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:15:18,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:15:18,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:18,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:15:18,203 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:15:18,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:18,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:18,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:18,204 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:15:18,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:15:18,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:15:18,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:15:18,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:15:18,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:18,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:15:18,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:18,206 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:15:18,207 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:15:18,207 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:15:18,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:15:18,207 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:15:18,208 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:15:18,208 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:15:18,208 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:15:18,209 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:15:18,209 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:15:18,209 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:15:18,209 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:15:18,209 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:15:18,209 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:15:18,210 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:15:18,210 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:15:18,210 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:15:18,210 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-13 21:15:18,210 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:15:18,210 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:15:18,211 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:15:18,211 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:15:18,211 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:15:18,211 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:15:18,211 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:15:18,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:15:18,212 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:15:18,212 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:15:18,212 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:15:18,212 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:15:18,212 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:15:18,212 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:15:18,212 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:15:18,213 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:15:18,213 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:15:18,213 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:15:18,213 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:15:18,213 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:15:18,213 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:15:18,214 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:15:18,214 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:15:18,214 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:15:18,214 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:15:18,214 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:15:18,214 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:15:18,214 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:15:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:15:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:15:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:15:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:15:18,215 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:15:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:15:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:15:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:15:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:15:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:15:18,216 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:15:18,217 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:15:18,217 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:15:18,217 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:15:18,217 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:15:18,217 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:15:18,217 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:15:18,218 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:15:18,218 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:15:18,218 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:15:18,218 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:15:18,218 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:15:18,218 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:15:18,219 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:15:18,219 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:15:18,219 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:15:18,219 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:15:18,219 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:15:18,219 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:15:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:15:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:15:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:15:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:15:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:15:18,220 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:15:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:15:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:15:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:15:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:15:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:15:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:15:18,221 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:15:18,222 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:15:18,222 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:15:18,222 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:15:18,222 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:15:18,222 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:15:18,222 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:15:18,223 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:15:18,223 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:15:18,223 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:15:18,223 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:15:18,223 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:15:18,223 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:15:18,224 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:15:18,224 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:15:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:15:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:15:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:15:18,224 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:15:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:15:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:15:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:15:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:15:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:15:18,225 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:15:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:15:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:15:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:15:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:18,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:15:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:15:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:15:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:15:18,227 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:15:18,228 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:15:18,228 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:15:18,228 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:15:18,228 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:15:18,228 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:15:18,228 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:15:18,229 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:15:18,229 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:15:18,229 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:15:18,229 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:15:18,229 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:15:18,229 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:15:18,229 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:15:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:15:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:15:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:15:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:15:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:15:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:15:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:15:18,230 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:15:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:15:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:15:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:15:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:15:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:15:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:15:18,231 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:15:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:15:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:15:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:15:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:15:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:15:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:15:18,232 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:15:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:15:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:15:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:15:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:15:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:18,233 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:15:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:15:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:15:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:15:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:15:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:15:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:15:18,234 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:15:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:15:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:15:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:15:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:15:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:15:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:15:18,235 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:15:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-13 21:15:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:15:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:15:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:15:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-10-13 21:15:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:15:18,236 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:15:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:15:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:15:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:15:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:15:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:15:18,237 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:15:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:15:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:15:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:15:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:15:18,238 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:15:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:15:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:15:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:15:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:15:18,239 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:15:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:15:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:15:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:15:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:15:18,240 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:15:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:15:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:15:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:15:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:15:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:15:18,241 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:15:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:15:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:15:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:15:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:15:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:15:18,242 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:15:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:15:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:15:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:15:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:15:18,243 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:15:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:15:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:15:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-13 21:15:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:15:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:15:18,244 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:15:18,245 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:15:18,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:15:18,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:15:18,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:15:20,726 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:15:20,727 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:15:20,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:20 BoogieIcfgContainer [2019-10-13 21:15:20,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:15:20,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:15:20,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:15:20,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:15:20,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:15:16" (1/3) ... [2019-10-13 21:15:20,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f0727e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:20, skipping insertion in model container [2019-10-13 21:15:20,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:17" (2/3) ... [2019-10-13 21:15:20,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f0727e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:20, skipping insertion in model container [2019-10-13 21:15:20,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:20" (3/3) ... [2019-10-13 21:15:20,741 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product33.cil.c [2019-10-13 21:15:20,752 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:15:20,766 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:15:20,778 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:15:20,818 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:15:20,819 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:15:20,820 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:15:20,820 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:15:20,820 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:15:20,828 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:15:20,829 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:15:20,829 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:15:20,872 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states. [2019-10-13 21:15:20,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-10-13 21:15:20,909 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:20,913 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:15:20,916 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:20,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:20,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1585064684, now seen corresponding path program 1 times [2019-10-13 21:15:20,935 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:20,935 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466882691] [2019-10-13 21:15:20,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:20,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:20,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:21,644 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466882691] [2019-10-13 21:15:21,646 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:21,646 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:15:21,647 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130324774] [2019-10-13 21:15:21,654 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:15:21,656 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:21,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:15:21,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:21,675 INFO L87 Difference]: Start difference. First operand 592 states. Second operand 2 states. [2019-10-13 21:15:21,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:21,805 INFO L93 Difference]: Finished difference Result 915 states and 1208 transitions. [2019-10-13 21:15:21,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:15:21,810 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 213 [2019-10-13 21:15:21,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:21,858 INFO L225 Difference]: With dead ends: 915 [2019-10-13 21:15:21,858 INFO L226 Difference]: Without dead ends: 569 [2019-10-13 21:15:21,873 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:21,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2019-10-13 21:15:21,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 569. [2019-10-13 21:15:21,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 569 states. [2019-10-13 21:15:21,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 752 transitions. [2019-10-13 21:15:21,993 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 752 transitions. Word has length 213 [2019-10-13 21:15:21,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:21,996 INFO L462 AbstractCegarLoop]: Abstraction has 569 states and 752 transitions. [2019-10-13 21:15:21,996 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:15:21,996 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 752 transitions. [2019-10-13 21:15:22,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-13 21:15:22,003 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:22,004 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:15:22,005 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:22,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:22,006 INFO L82 PathProgramCache]: Analyzing trace with hash -871145054, now seen corresponding path program 1 times [2019-10-13 21:15:22,006 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:22,007 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300095943] [2019-10-13 21:15:22,007 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,007 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:22,436 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300095943] [2019-10-13 21:15:22,436 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:22,436 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:22,436 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246216005] [2019-10-13 21:15:22,445 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:22,446 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:22,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:22,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:22,447 INFO L87 Difference]: Start difference. First operand 569 states and 752 transitions. Second operand 3 states. [2019-10-13 21:15:22,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:22,528 INFO L93 Difference]: Finished difference Result 898 states and 1170 transitions. [2019-10-13 21:15:22,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:22,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2019-10-13 21:15:22,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:22,538 INFO L225 Difference]: With dead ends: 898 [2019-10-13 21:15:22,538 INFO L226 Difference]: Without dead ends: 572 [2019-10-13 21:15:22,542 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:22,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2019-10-13 21:15:22,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 571. [2019-10-13 21:15:22,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2019-10-13 21:15:22,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 754 transitions. [2019-10-13 21:15:22,598 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 754 transitions. Word has length 214 [2019-10-13 21:15:22,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:22,601 INFO L462 AbstractCegarLoop]: Abstraction has 571 states and 754 transitions. [2019-10-13 21:15:22,601 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:22,601 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 754 transitions. [2019-10-13 21:15:22,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2019-10-13 21:15:22,606 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:22,607 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:15:22,607 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:22,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:22,608 INFO L82 PathProgramCache]: Analyzing trace with hash 169428497, now seen corresponding path program 1 times [2019-10-13 21:15:22,608 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:22,608 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65402652] [2019-10-13 21:15:22,608 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,609 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:22,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:22,846 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:22,847 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65402652] [2019-10-13 21:15:22,847 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:22,847 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:22,848 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185375239] [2019-10-13 21:15:22,851 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:22,854 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:22,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:22,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:22,855 INFO L87 Difference]: Start difference. First operand 571 states and 754 transitions. Second operand 3 states. [2019-10-13 21:15:22,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:22,928 INFO L93 Difference]: Finished difference Result 1120 states and 1509 transitions. [2019-10-13 21:15:22,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:22,929 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 226 [2019-10-13 21:15:22,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:22,940 INFO L225 Difference]: With dead ends: 1120 [2019-10-13 21:15:22,940 INFO L226 Difference]: Without dead ends: 614 [2019-10-13 21:15:22,943 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:22,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2019-10-13 21:15:22,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 613. [2019-10-13 21:15:22,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2019-10-13 21:15:23,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 826 transitions. [2019-10-13 21:15:23,003 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 826 transitions. Word has length 226 [2019-10-13 21:15:23,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:23,007 INFO L462 AbstractCegarLoop]: Abstraction has 613 states and 826 transitions. [2019-10-13 21:15:23,007 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:23,012 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 826 transitions. [2019-10-13 21:15:23,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2019-10-13 21:15:23,022 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:23,022 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:15:23,023 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:23,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:23,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1807873467, now seen corresponding path program 1 times [2019-10-13 21:15:23,024 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:23,025 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057282652] [2019-10-13 21:15:23,026 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:23,026 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:23,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:23,364 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:23,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057282652] [2019-10-13 21:15:23,364 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:23,365 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:23,365 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171871341] [2019-10-13 21:15:23,365 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:23,366 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:23,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:23,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:23,366 INFO L87 Difference]: Start difference. First operand 613 states and 826 transitions. Second operand 3 states. [2019-10-13 21:15:23,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:23,411 INFO L93 Difference]: Finished difference Result 1243 states and 1720 transitions. [2019-10-13 21:15:23,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:23,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 227 [2019-10-13 21:15:23,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:23,417 INFO L225 Difference]: With dead ends: 1243 [2019-10-13 21:15:23,418 INFO L226 Difference]: Without dead ends: 695 [2019-10-13 21:15:23,420 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:23,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2019-10-13 21:15:23,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 694. [2019-10-13 21:15:23,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 694 states. [2019-10-13 21:15:23,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 964 transitions. [2019-10-13 21:15:23,453 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 964 transitions. Word has length 227 [2019-10-13 21:15:23,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:23,454 INFO L462 AbstractCegarLoop]: Abstraction has 694 states and 964 transitions. [2019-10-13 21:15:23,454 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:23,454 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 964 transitions. [2019-10-13 21:15:23,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2019-10-13 21:15:23,459 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:23,459 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:23,460 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:23,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:23,460 INFO L82 PathProgramCache]: Analyzing trace with hash -351968527, now seen corresponding path program 1 times [2019-10-13 21:15:23,461 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:23,461 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730796177] [2019-10-13 21:15:23,461 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:23,461 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:23,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:23,679 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:23,680 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730796177] [2019-10-13 21:15:23,680 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:23,680 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:23,680 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586348078] [2019-10-13 21:15:23,681 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:23,681 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:23,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:23,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:23,682 INFO L87 Difference]: Start difference. First operand 694 states and 964 transitions. Second operand 3 states. [2019-10-13 21:15:23,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:23,727 INFO L93 Difference]: Finished difference Result 1480 states and 2124 transitions. [2019-10-13 21:15:23,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:23,728 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 228 [2019-10-13 21:15:23,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:23,734 INFO L225 Difference]: With dead ends: 1480 [2019-10-13 21:15:23,734 INFO L226 Difference]: Without dead ends: 851 [2019-10-13 21:15:23,736 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:23,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2019-10-13 21:15:23,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 850. [2019-10-13 21:15:23,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2019-10-13 21:15:23,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1228 transitions. [2019-10-13 21:15:23,777 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1228 transitions. Word has length 228 [2019-10-13 21:15:23,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:23,777 INFO L462 AbstractCegarLoop]: Abstraction has 850 states and 1228 transitions. [2019-10-13 21:15:23,777 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:23,777 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1228 transitions. [2019-10-13 21:15:23,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-10-13 21:15:23,786 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:23,786 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:23,787 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:23,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:23,787 INFO L82 PathProgramCache]: Analyzing trace with hash -624836209, now seen corresponding path program 1 times [2019-10-13 21:15:23,787 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:23,788 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084715574] [2019-10-13 21:15:23,788 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:23,788 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:23,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:24,409 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:24,409 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084715574] [2019-10-13 21:15:24,409 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936866385] [2019-10-13 21:15:24,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:25,198 INFO L256 TraceCheckSpWp]: Trace formula consists of 3007 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:25,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:25,539 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:15:25,540 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:26,025 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:26,114 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:26,213 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:26,384 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:26,385 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:26,385 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-13 21:15:26,386 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226706538] [2019-10-13 21:15:26,386 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:15:26,387 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:26,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:15:26,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:15:26,388 INFO L87 Difference]: Start difference. First operand 850 states and 1228 transitions. Second operand 9 states. [2019-10-13 21:15:28,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:28,029 INFO L93 Difference]: Finished difference Result 1678 states and 2436 transitions. [2019-10-13 21:15:28,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:15:28,029 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 230 [2019-10-13 21:15:28,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:28,036 INFO L225 Difference]: With dead ends: 1678 [2019-10-13 21:15:28,036 INFO L226 Difference]: Without dead ends: 864 [2019-10-13 21:15:28,040 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 449 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:15:28,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2019-10-13 21:15:28,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 864. [2019-10-13 21:15:28,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 864 states. [2019-10-13 21:15:28,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1246 transitions. [2019-10-13 21:15:28,088 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1246 transitions. Word has length 230 [2019-10-13 21:15:28,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:28,089 INFO L462 AbstractCegarLoop]: Abstraction has 864 states and 1246 transitions. [2019-10-13 21:15:28,089 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:15:28,089 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1246 transitions. [2019-10-13 21:15:28,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-10-13 21:15:28,095 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:28,096 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:28,337 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:28,338 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:28,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:28,338 INFO L82 PathProgramCache]: Analyzing trace with hash -485637097, now seen corresponding path program 1 times [2019-10-13 21:15:28,339 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:28,339 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019561125] [2019-10-13 21:15:28,340 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:28,340 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:28,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:28,757 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:28,757 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019561125] [2019-10-13 21:15:28,758 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876762646] [2019-10-13 21:15:28,758 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 [2019-10-13 21:15:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:29,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 3008 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:29,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:29,769 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:15:29,770 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:30,100 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:30,165 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:30,226 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:30,226 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:30,226 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-13 21:15:30,226 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044510601] [2019-10-13 21:15:30,227 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:15:30,228 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:30,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:15:30,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:15:30,229 INFO L87 Difference]: Start difference. First operand 864 states and 1246 transitions. Second operand 7 states. [2019-10-13 21:15:31,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:31,402 INFO L93 Difference]: Finished difference Result 1679 states and 2442 transitions. [2019-10-13 21:15:31,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:15:31,402 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2019-10-13 21:15:31,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:31,408 INFO L225 Difference]: With dead ends: 1679 [2019-10-13 21:15:31,409 INFO L226 Difference]: Without dead ends: 866 [2019-10-13 21:15:31,413 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 456 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:15:31,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2019-10-13 21:15:31,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2019-10-13 21:15:31,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 866 states. [2019-10-13 21:15:31,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1249 transitions. [2019-10-13 21:15:31,457 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1249 transitions. Word has length 231 [2019-10-13 21:15:31,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:31,458 INFO L462 AbstractCegarLoop]: Abstraction has 866 states and 1249 transitions. [2019-10-13 21:15:31,458 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:15:31,458 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1249 transitions. [2019-10-13 21:15:31,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-10-13 21:15:31,463 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:31,463 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:31,671 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:31,672 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:31,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:31,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1993052600, now seen corresponding path program 1 times [2019-10-13 21:15:31,673 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:31,673 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149139958] [2019-10-13 21:15:31,673 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:31,673 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:31,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:32,168 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:32,169 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149139958] [2019-10-13 21:15:32,169 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598583190] [2019-10-13 21:15:32,169 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 [2019-10-13 21:15:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:32,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 3009 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:32,862 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:33,081 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:33,081 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:33,464 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:33,553 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:33,639 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:33,831 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:33,831 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:33,832 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-13 21:15:33,832 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524488374] [2019-10-13 21:15:33,834 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:15:33,835 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:33,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:15:33,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:15:33,836 INFO L87 Difference]: Start difference. First operand 866 states and 1249 transitions. Second operand 16 states. [2019-10-13 21:15:36,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:36,268 INFO L93 Difference]: Finished difference Result 1683 states and 2440 transitions. [2019-10-13 21:15:36,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:36,269 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 232 [2019-10-13 21:15:36,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:36,276 INFO L225 Difference]: With dead ends: 1683 [2019-10-13 21:15:36,276 INFO L226 Difference]: Without dead ends: 878 [2019-10-13 21:15:36,280 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 453 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:15:36,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2019-10-13 21:15:36,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 876. [2019-10-13 21:15:36,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2019-10-13 21:15:36,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1260 transitions. [2019-10-13 21:15:36,317 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1260 transitions. Word has length 232 [2019-10-13 21:15:36,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:36,317 INFO L462 AbstractCegarLoop]: Abstraction has 876 states and 1260 transitions. [2019-10-13 21:15:36,317 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:15:36,317 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1260 transitions. [2019-10-13 21:15:36,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-10-13 21:15:36,321 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:36,322 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:36,529 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:36,529 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:36,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:36,530 INFO L82 PathProgramCache]: Analyzing trace with hash 798150774, now seen corresponding path program 2 times [2019-10-13 21:15:36,530 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:36,532 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733674089] [2019-10-13 21:15:36,532 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:36,532 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:36,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:36,920 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:36,920 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733674089] [2019-10-13 21:15:36,921 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709593790] [2019-10-13 21:15:36,922 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:37,565 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:15:37,566 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:15:37,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 2363 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:15:37,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:37,737 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:15:37,738 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:38,207 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:38,208 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:38,208 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-13 21:15:38,208 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736167969] [2019-10-13 21:15:38,209 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:15:38,209 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:38,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:15:38,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:15:38,210 INFO L87 Difference]: Start difference. First operand 876 states and 1260 transitions. Second operand 14 states. [2019-10-13 21:15:40,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:40,868 INFO L93 Difference]: Finished difference Result 2873 states and 4167 transitions. [2019-10-13 21:15:40,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:15:40,868 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 233 [2019-10-13 21:15:40,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:40,885 INFO L225 Difference]: With dead ends: 2873 [2019-10-13 21:15:40,885 INFO L226 Difference]: Without dead ends: 2560 [2019-10-13 21:15:40,888 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 464 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 21:15:40,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2019-10-13 21:15:41,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 2199. [2019-10-13 21:15:41,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2199 states. [2019-10-13 21:15:41,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 3290 transitions. [2019-10-13 21:15:41,012 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 3290 transitions. Word has length 233 [2019-10-13 21:15:41,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:41,013 INFO L462 AbstractCegarLoop]: Abstraction has 2199 states and 3290 transitions. [2019-10-13 21:15:41,013 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:15:41,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 3290 transitions. [2019-10-13 21:15:41,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-10-13 21:15:41,029 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:41,030 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:41,238 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:41,238 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:41,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:41,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1778277772, now seen corresponding path program 1 times [2019-10-13 21:15:41,239 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:41,239 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70567677] [2019-10-13 21:15:41,239 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:41,239 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:41,240 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:41,512 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:41,512 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70567677] [2019-10-13 21:15:41,512 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289065456] [2019-10-13 21:15:41,513 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 [2019-10-13 21:15:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:42,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 3011 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:42,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:42,305 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:42,305 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:42,706 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:42,806 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:42,882 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:43,013 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:43,014 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:43,014 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-13 21:15:43,014 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12450058] [2019-10-13 21:15:43,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:15:43,015 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:43,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:15:43,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:15:43,016 INFO L87 Difference]: Start difference. First operand 2199 states and 3290 transitions. Second operand 15 states. [2019-10-13 21:15:45,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:45,283 INFO L93 Difference]: Finished difference Result 4292 states and 6456 transitions. [2019-10-13 21:15:45,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:15:45,284 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 234 [2019-10-13 21:15:45,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:45,305 INFO L225 Difference]: With dead ends: 4292 [2019-10-13 21:15:45,306 INFO L226 Difference]: Without dead ends: 2205 [2019-10-13 21:15:45,318 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 457 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:15:45,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2019-10-13 21:15:45,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 2199. [2019-10-13 21:15:45,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2199 states. [2019-10-13 21:15:45,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 3288 transitions. [2019-10-13 21:15:45,422 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 3288 transitions. Word has length 234 [2019-10-13 21:15:45,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:45,423 INFO L462 AbstractCegarLoop]: Abstraction has 2199 states and 3288 transitions. [2019-10-13 21:15:45,423 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:15:45,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 3288 transitions. [2019-10-13 21:15:45,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2019-10-13 21:15:45,436 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:45,436 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:45,645 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:45,645 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:45,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:45,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1284224359, now seen corresponding path program 1 times [2019-10-13 21:15:45,646 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:45,646 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069171670] [2019-10-13 21:15:45,646 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:45,647 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:45,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:45,909 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:15:45,909 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069171670] [2019-10-13 21:15:45,910 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299843225] [2019-10-13 21:15:45,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:46,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 3012 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:46,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:46,729 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:15:46,730 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:47,000 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:47,056 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:47,122 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:15:47,123 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:47,123 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-13 21:15:47,123 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660391506] [2019-10-13 21:15:47,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:15:47,124 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:47,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:15:47,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:15:47,125 INFO L87 Difference]: Start difference. First operand 2199 states and 3288 transitions. Second operand 12 states. [2019-10-13 21:15:48,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:48,579 INFO L93 Difference]: Finished difference Result 3319 states and 4870 transitions. [2019-10-13 21:15:48,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:15:48,580 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 235 [2019-10-13 21:15:48,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:48,591 INFO L225 Difference]: With dead ends: 3319 [2019-10-13 21:15:48,591 INFO L226 Difference]: Without dead ends: 1725 [2019-10-13 21:15:48,597 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 464 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:15:48,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2019-10-13 21:15:48,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 1725. [2019-10-13 21:15:48,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1725 states. [2019-10-13 21:15:48,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1725 states to 1725 states and 2508 transitions. [2019-10-13 21:15:48,667 INFO L78 Accepts]: Start accepts. Automaton has 1725 states and 2508 transitions. Word has length 235 [2019-10-13 21:15:48,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:48,668 INFO L462 AbstractCegarLoop]: Abstraction has 1725 states and 2508 transitions. [2019-10-13 21:15:48,668 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:15:48,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1725 states and 2508 transitions. [2019-10-13 21:15:48,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2019-10-13 21:15:48,677 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:48,677 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:48,886 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:48,886 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:48,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:48,887 INFO L82 PathProgramCache]: Analyzing trace with hash -348984940, now seen corresponding path program 2 times [2019-10-13 21:15:48,887 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:48,887 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126172275] [2019-10-13 21:15:48,887 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:48,888 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:48,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:49,158 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:15:49,158 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126172275] [2019-10-13 21:15:49,158 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741940591] [2019-10-13 21:15:49,159 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:49,795 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:15:49,795 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:15:49,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 2366 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:15:49,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:49,945 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:15:49,945 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:50,499 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:15:50,500 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:15:50,500 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [15] total 27 [2019-10-13 21:15:50,500 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697062479] [2019-10-13 21:15:50,502 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:15:50,502 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:50,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:15:50,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2019-10-13 21:15:50,503 INFO L87 Difference]: Start difference. First operand 1725 states and 2508 transitions. Second operand 14 states.