java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec3_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:15:30,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:15:30,970 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:15:30,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:15:30,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:15:30,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:15:30,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:15:31,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:15:31,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:15:31,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:15:31,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:15:31,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:15:31,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:15:31,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:15:31,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:15:31,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:15:31,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:15:31,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:15:31,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:15:31,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:15:31,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:15:31,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:15:31,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:15:31,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:15:31,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:15:31,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:15:31,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:15:31,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:15:31,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:15:31,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:15:31,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:15:31,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:15:31,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:15:31,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:15:31,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:15:31,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:15:31,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:15:31,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:15:31,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:15:31,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:15:31,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:15:31,061 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 21:15:31,080 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:15:31,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:15:31,083 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:15:31,083 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:15:31,084 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:15:31,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:15:31,084 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:15:31,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:15:31,084 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:15:31,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:15:31,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:15:31,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:15:31,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:15:31,087 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:15:31,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:15:31,087 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:15:31,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:15:31,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:15:31,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:15:31,088 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:15:31,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:15:31,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:31,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:15:31,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:15:31,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:15:31,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:15:31,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:15:31,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:15:31,090 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 21:15:31,388 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:15:31,403 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:15:31,407 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:15:31,408 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:15:31,409 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:15:31,409 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product19.cil.c [2019-10-13 21:15:31,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e48952e0/4b79eab42bb04103951d7c2ec6886e5b/FLAG44cf790da [2019-10-13 21:15:32,186 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:15:32,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product19.cil.c [2019-10-13 21:15:32,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e48952e0/4b79eab42bb04103951d7c2ec6886e5b/FLAG44cf790da [2019-10-13 21:15:32,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e48952e0/4b79eab42bb04103951d7c2ec6886e5b [2019-10-13 21:15:32,401 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:15:32,403 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:15:32,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:32,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:15:32,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:15:32,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:32" (1/1) ... [2019-10-13 21:15:32,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18051c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:32, skipping insertion in model container [2019-10-13 21:15:32,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:32" (1/1) ... [2019-10-13 21:15:32,418 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:15:32,499 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:15:33,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:33,231 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:15:33,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:33,469 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:15:33,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:33 WrapperNode [2019-10-13 21:15:33,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:33,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:15:33,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:15:33,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:15:33,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:33" (1/1) ... [2019-10-13 21:15:33,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:33" (1/1) ... [2019-10-13 21:15:33,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:33" (1/1) ... [2019-10-13 21:15:33,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:33" (1/1) ... [2019-10-13 21:15:33,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:33" (1/1) ... [2019-10-13 21:15:33,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:33" (1/1) ... [2019-10-13 21:15:33,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:33" (1/1) ... [2019-10-13 21:15:33,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:15:33,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:15:33,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:15:33,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:15:33,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:33" (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 21:15:33,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:15:33,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:15:33,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:33,774 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:15:33,774 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:15:33,774 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:15:33,774 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:15:33,775 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:15:33,775 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:15:33,775 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:15:33,775 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:15:33,776 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:15:33,776 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:15:33,776 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:15:33,776 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:15:33,776 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:15:33,777 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:15:33,777 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:15:33,777 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:15:33,778 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:15:33,779 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:15:33,779 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:15:33,779 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:15:33,779 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:15:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:15:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:15:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:15:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-10-13 21:15:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-10-13 21:15:33,781 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:15:33,781 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:15:33,781 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:15:33,781 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:15:33,781 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:15:33,781 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:15:33,782 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:15:33,782 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:15:33,782 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:15:33,782 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:15:33,782 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:15:33,783 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:15:33,783 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:15:33,783 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:15:33,783 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:15:33,783 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:15:33,784 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:15:33,784 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:15:33,784 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:15:33,784 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:15:33,784 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:15:33,785 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:15:33,785 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:15:33,785 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:15:33,785 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:15:33,785 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:15:33,786 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:15:33,786 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:15:33,786 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:15:33,786 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:15:33,786 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:15:33,786 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:15:33,787 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:15:33,787 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:15:33,787 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:15:33,787 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:15:33,788 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:15:33,788 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:15:33,788 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:33,788 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:15:33,788 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:33,789 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:15:33,789 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:15:33,789 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:15:33,789 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:15:33,789 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:15:33,790 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:15:33,790 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:15:33,790 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:15:33,790 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:15:33,790 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:15:33,791 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:15:33,791 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:15:33,791 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:15:33,791 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:15:33,791 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:15:33,792 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:15:33,792 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:15:33,792 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:15:33,792 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:15:33,792 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:15:33,792 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:15:33,793 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:15:33,793 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:15:33,793 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:15:33,793 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:15:33,793 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:15:33,793 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:15:33,794 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:15:33,794 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:15:33,794 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:15:33,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:15:33,794 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:15:33,794 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:15:33,795 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:15:33,795 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:15:33,795 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:15:33,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:33,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:33,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:33,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:15:33,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:15:33,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:15:33,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:15:33,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:15:33,796 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:15:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:15:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:15:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:15:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:15:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:15:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:15:33,797 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:15:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:15:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:15:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:15:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:15:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:15:33,798 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:15:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:15:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:15:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:15:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:15:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:15:33,799 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:15:33,800 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:15:33,800 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:15:33,800 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:15:33,800 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:15:33,800 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:15:33,800 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:15:33,801 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:15:33,801 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:15:33,801 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:15:33,801 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:15:33,801 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:15:33,801 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:15:33,802 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:15:33,802 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:15:33,802 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:15:33,802 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:15:33,802 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:15:33,802 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:15:33,802 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:15:33,803 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:15:33,803 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:15:33,803 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-10-13 21:15:33,803 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:15:33,803 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:15:33,803 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:15:33,804 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-10-13 21:15:33,804 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:15:33,804 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:15:33,804 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:15:33,804 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:15:33,804 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:15:33,805 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:15:33,805 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:15:33,805 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:15:33,805 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:15:33,805 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:15:33,805 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:15:33,805 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:15:33,806 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:15:33,806 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:15:33,806 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:15:33,806 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:15:33,806 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:15:33,806 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:15:33,807 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:15:33,807 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:15:33,807 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:15:33,807 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:15:33,807 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:15:33,807 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:15:33,807 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:15:33,808 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:15:33,808 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:15:33,808 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:15:33,808 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:15:33,808 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:15:33,808 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:15:33,808 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:15:33,809 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:15:33,809 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:15:33,809 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:15:33,809 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:15:33,809 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:15:33,809 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:15:33,810 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:15:33,810 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:15:33,810 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:15:33,810 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:15:33,810 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:15:33,811 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:15:33,811 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:15:33,811 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:15:33,811 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:15:33,811 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:15:33,811 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:33,811 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:33,812 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:15:33,812 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:15:33,812 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:15:33,812 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:15:33,812 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:15:33,812 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:15:33,812 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:15:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:15:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:15:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:15:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:15:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:15:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:15:33,813 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:15:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:15:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:15:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:15:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:15:33,814 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:15:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:15:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:15:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:15:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:15:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:15:33,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:15:36,137 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:15:36,138 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:15:36,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:36 BoogieIcfgContainer [2019-10-13 21:15:36,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:15:36,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:15:36,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:15:36,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:15:36,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:15:32" (1/3) ... [2019-10-13 21:15:36,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50cfb9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:36, skipping insertion in model container [2019-10-13 21:15:36,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:33" (2/3) ... [2019-10-13 21:15:36,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50cfb9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:36, skipping insertion in model container [2019-10-13 21:15:36,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:36" (3/3) ... [2019-10-13 21:15:36,152 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product19.cil.c [2019-10-13 21:15:36,162 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:15:36,175 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:15:36,188 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:15:36,232 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:15:36,232 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:15:36,232 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:15:36,232 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:15:36,232 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:15:36,233 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:15:36,233 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:15:36,233 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:15:36,264 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states. [2019-10-13 21:15:36,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-13 21:15:36,286 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:36,288 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:36,290 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:36,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:36,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1399924535, now seen corresponding path program 1 times [2019-10-13 21:15:36,309 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:36,309 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234371204] [2019-10-13 21:15:36,310 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:36,310 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:36,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:37,059 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:15:37,060 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234371204] [2019-10-13 21:15:37,061 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:37,061 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:15:37,062 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088327994] [2019-10-13 21:15:37,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:15:37,070 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:37,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:15:37,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:37,088 INFO L87 Difference]: Start difference. First operand 506 states. Second operand 2 states. [2019-10-13 21:15:37,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:37,165 INFO L93 Difference]: Finished difference Result 754 states and 989 transitions. [2019-10-13 21:15:37,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:15:37,167 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 170 [2019-10-13 21:15:37,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:37,189 INFO L225 Difference]: With dead ends: 754 [2019-10-13 21:15:37,189 INFO L226 Difference]: Without dead ends: 483 [2019-10-13 21:15:37,196 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 21:15:37,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2019-10-13 21:15:37,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 483. [2019-10-13 21:15:37,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2019-10-13 21:15:37,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 637 transitions. [2019-10-13 21:15:37,285 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 637 transitions. Word has length 170 [2019-10-13 21:15:37,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:37,288 INFO L462 AbstractCegarLoop]: Abstraction has 483 states and 637 transitions. [2019-10-13 21:15:37,288 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:15:37,288 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 637 transitions. [2019-10-13 21:15:37,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 21:15:37,293 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:37,294 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:37,294 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:37,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:37,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1985432290, now seen corresponding path program 1 times [2019-10-13 21:15:37,295 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:37,295 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804099496] [2019-10-13 21:15:37,295 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:37,295 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:37,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:37,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:37,531 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:15:37,532 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804099496] [2019-10-13 21:15:37,532 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:37,532 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:37,533 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634031094] [2019-10-13 21:15:37,535 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:37,535 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:37,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:37,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:37,536 INFO L87 Difference]: Start difference. First operand 483 states and 637 transitions. Second operand 3 states. [2019-10-13 21:15:37,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:37,619 INFO L93 Difference]: Finished difference Result 737 states and 954 transitions. [2019-10-13 21:15:37,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:37,623 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-13 21:15:37,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:37,634 INFO L225 Difference]: With dead ends: 737 [2019-10-13 21:15:37,634 INFO L226 Difference]: Without dead ends: 486 [2019-10-13 21:15:37,637 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 21:15:37,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2019-10-13 21:15:37,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 485. [2019-10-13 21:15:37,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 485 states. [2019-10-13 21:15:37,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 639 transitions. [2019-10-13 21:15:37,701 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 639 transitions. Word has length 171 [2019-10-13 21:15:37,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:37,702 INFO L462 AbstractCegarLoop]: Abstraction has 485 states and 639 transitions. [2019-10-13 21:15:37,702 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:37,702 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 639 transitions. [2019-10-13 21:15:37,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2019-10-13 21:15:37,706 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:37,712 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:37,712 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:37,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:37,713 INFO L82 PathProgramCache]: Analyzing trace with hash 582779830, now seen corresponding path program 1 times [2019-10-13 21:15:37,713 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:37,713 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855866541] [2019-10-13 21:15:37,714 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:37,714 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:37,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-13 21:15:37,914 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855866541] [2019-10-13 21:15:37,914 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:37,914 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:15:37,915 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045548639] [2019-10-13 21:15:37,916 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:15:37,918 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:37,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:15:37,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:15:37,919 INFO L87 Difference]: Start difference. First operand 485 states and 639 transitions. Second operand 3 states. [2019-10-13 21:15:37,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:37,971 INFO L93 Difference]: Finished difference Result 946 states and 1276 transitions. [2019-10-13 21:15:37,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:15:37,972 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2019-10-13 21:15:37,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:37,977 INFO L225 Difference]: With dead ends: 946 [2019-10-13 21:15:37,978 INFO L226 Difference]: Without dead ends: 526 [2019-10-13 21:15:37,979 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 21:15:37,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2019-10-13 21:15:38,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 525. [2019-10-13 21:15:38,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2019-10-13 21:15:38,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 708 transitions. [2019-10-13 21:15:38,021 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 708 transitions. Word has length 177 [2019-10-13 21:15:38,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:38,026 INFO L462 AbstractCegarLoop]: Abstraction has 525 states and 708 transitions. [2019-10-13 21:15:38,026 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:15:38,026 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 708 transitions. [2019-10-13 21:15:38,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2019-10-13 21:15:38,033 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:38,033 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:38,034 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:38,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:38,035 INFO L82 PathProgramCache]: Analyzing trace with hash 452092045, now seen corresponding path program 1 times [2019-10-13 21:15:38,035 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:38,035 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29566130] [2019-10-13 21:15:38,035 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:38,035 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:38,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:38,441 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:15:38,442 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29566130] [2019-10-13 21:15:38,442 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:38,442 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 21:15:38,443 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343777566] [2019-10-13 21:15:38,443 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:15:38,444 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:38,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:15:38,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-10-13 21:15:38,445 INFO L87 Difference]: Start difference. First operand 525 states and 708 transitions. Second operand 12 states. [2019-10-13 21:15:49,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:49,302 INFO L93 Difference]: Finished difference Result 2472 states and 3221 transitions. [2019-10-13 21:15:49,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-10-13 21:15:49,302 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 178 [2019-10-13 21:15:49,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:49,317 INFO L225 Difference]: With dead ends: 2472 [2019-10-13 21:15:49,318 INFO L226 Difference]: Without dead ends: 1949 [2019-10-13 21:15:49,321 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=330, Invalid=1310, Unknown=0, NotChecked=0, Total=1640 [2019-10-13 21:15:49,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2019-10-13 21:15:49,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 1930. [2019-10-13 21:15:49,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1930 states. [2019-10-13 21:15:49,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2495 transitions. [2019-10-13 21:15:49,431 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2495 transitions. Word has length 178 [2019-10-13 21:15:49,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:49,432 INFO L462 AbstractCegarLoop]: Abstraction has 1930 states and 2495 transitions. [2019-10-13 21:15:49,433 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:15:49,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2495 transitions. [2019-10-13 21:15:49,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-13 21:15:49,436 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:49,437 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:49,437 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:49,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:49,437 INFO L82 PathProgramCache]: Analyzing trace with hash 748374271, now seen corresponding path program 1 times [2019-10-13 21:15:49,438 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:49,438 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925500259] [2019-10-13 21:15:49,438 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:49,438 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:49,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:49,831 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-13 21:15:49,832 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925500259] [2019-10-13 21:15:49,832 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:49,832 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-13 21:15:49,832 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496638897] [2019-10-13 21:15:49,833 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:15:49,833 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:49,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:15:49,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-10-13 21:15:49,835 INFO L87 Difference]: Start difference. First operand 1930 states and 2495 transitions. Second operand 16 states. [2019-10-13 21:15:50,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:50,289 INFO L93 Difference]: Finished difference Result 3245 states and 4177 transitions. [2019-10-13 21:15:50,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-13 21:15:50,289 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 179 [2019-10-13 21:15:50,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:50,300 INFO L225 Difference]: With dead ends: 3245 [2019-10-13 21:15:50,300 INFO L226 Difference]: Without dead ends: 1277 [2019-10-13 21:15:50,306 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-10-13 21:15:50,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2019-10-13 21:15:50,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1159. [2019-10-13 21:15:50,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1159 states. [2019-10-13 21:15:50,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1511 transitions. [2019-10-13 21:15:50,377 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1511 transitions. Word has length 179 [2019-10-13 21:15:50,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:50,377 INFO L462 AbstractCegarLoop]: Abstraction has 1159 states and 1511 transitions. [2019-10-13 21:15:50,378 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:15:50,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1511 transitions. [2019-10-13 21:15:50,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-13 21:15:50,383 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:50,384 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:50,384 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:50,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:50,385 INFO L82 PathProgramCache]: Analyzing trace with hash 2091426612, now seen corresponding path program 1 times [2019-10-13 21:15:50,385 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:50,385 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910093464] [2019-10-13 21:15:50,385 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:50,386 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:50,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:52,028 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-13 21:15:52,028 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910093464] [2019-10-13 21:15:52,029 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844612712] [2019-10-13 21:15:52,029 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 21:15:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:52,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 2628 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:15:52,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:53,104 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:15:53,104 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:15:53,633 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:15:53,809 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:53,986 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:15:54,194 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:15:54,195 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:15:54,195 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [48, 9] total 60 [2019-10-13 21:15:54,195 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107774237] [2019-10-13 21:15:54,196 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:15:54,197 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:54,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:15:54,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=3385, Unknown=0, NotChecked=0, Total=3540 [2019-10-13 21:15:54,199 INFO L87 Difference]: Start difference. First operand 1159 states and 1511 transitions. Second operand 9 states. [2019-10-13 21:15:56,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:56,544 INFO L93 Difference]: Finished difference Result 2296 states and 3002 transitions. [2019-10-13 21:15:56,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:15:56,544 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 188 [2019-10-13 21:15:56,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:56,551 INFO L225 Difference]: With dead ends: 2296 [2019-10-13 21:15:56,552 INFO L226 Difference]: Without dead ends: 1173 [2019-10-13 21:15:56,558 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 364 SyntacticMatches, 6 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=182, Invalid=3724, Unknown=0, NotChecked=0, Total=3906 [2019-10-13 21:15:56,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2019-10-13 21:15:56,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1173. [2019-10-13 21:15:56,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2019-10-13 21:15:56,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1529 transitions. [2019-10-13 21:15:56,623 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1529 transitions. Word has length 188 [2019-10-13 21:15:56,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:56,623 INFO L462 AbstractCegarLoop]: Abstraction has 1173 states and 1529 transitions. [2019-10-13 21:15:56,623 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:15:56,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1529 transitions. [2019-10-13 21:15:56,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-13 21:15:56,627 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:56,628 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:56,836 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:15:56,836 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:56,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:56,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1597586046, now seen corresponding path program 1 times [2019-10-13 21:15:56,837 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:56,837 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749596536] [2019-10-13 21:15:56,838 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:56,838 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:56,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:58,868 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-13 21:15:58,868 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749596536] [2019-10-13 21:15:58,868 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923385826] [2019-10-13 21:15:58,869 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 21:15:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:59,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 2629 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:15:59,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:15:59,707 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 21:15:59,708 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:00,078 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:00,193 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:00,235 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-13 21:16:00,235 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:00,235 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [46, 7] total 54 [2019-10-13 21:16:00,235 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559200997] [2019-10-13 21:16:00,236 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:00,236 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:00,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:00,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=2730, Unknown=0, NotChecked=0, Total=2862 [2019-10-13 21:16:00,238 INFO L87 Difference]: Start difference. First operand 1173 states and 1529 transitions. Second operand 7 states. [2019-10-13 21:16:02,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:02,160 INFO L93 Difference]: Finished difference Result 2297 states and 3006 transitions. [2019-10-13 21:16:02,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:16:02,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2019-10-13 21:16:02,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:02,167 INFO L225 Difference]: With dead ends: 2297 [2019-10-13 21:16:02,168 INFO L226 Difference]: Without dead ends: 1175 [2019-10-13 21:16:02,173 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 371 SyntacticMatches, 5 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=150, Invalid=2930, Unknown=0, NotChecked=0, Total=3080 [2019-10-13 21:16:02,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2019-10-13 21:16:02,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1175. [2019-10-13 21:16:02,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2019-10-13 21:16:02,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1532 transitions. [2019-10-13 21:16:02,236 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1532 transitions. Word has length 189 [2019-10-13 21:16:02,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:02,236 INFO L462 AbstractCegarLoop]: Abstraction has 1175 states and 1532 transitions. [2019-10-13 21:16:02,237 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:02,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1532 transitions. [2019-10-13 21:16:02,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-13 21:16:02,240 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:02,241 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:02,449 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:02,449 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:02,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:02,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1048581025, now seen corresponding path program 1 times [2019-10-13 21:16:02,450 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:02,451 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080626601] [2019-10-13 21:16:02,451 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:02,451 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:02,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:03,778 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-13 21:16:03,779 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080626601] [2019-10-13 21:16:03,779 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:03,779 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2019-10-13 21:16:03,779 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108650988] [2019-10-13 21:16:03,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 41 states [2019-10-13 21:16:03,780 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:03,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2019-10-13 21:16:03,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1557, Unknown=0, NotChecked=0, Total=1640 [2019-10-13 21:16:03,782 INFO L87 Difference]: Start difference. First operand 1175 states and 1532 transitions. Second operand 41 states.