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_spec11_product22.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:13:31,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:13:31,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:13:31,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:13:31,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:13:31,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:13:31,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:13:31,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:13:31,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:13:31,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:13:31,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:13:31,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:13:31,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:13:31,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:13:31,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:13:31,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:13:31,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:13:31,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:13:31,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:13:31,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:13:31,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:13:31,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:13:31,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:13:31,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:13:31,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:13:31,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:13:31,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:13:31,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:13:31,237 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:13:31,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:13:31,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:13:31,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:13:31,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:13:31,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:13:31,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:13:31,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:13:31,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:13:31,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:13:31,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:13:31,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:13:31,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:13:31,246 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 21:13:31,265 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:13:31,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:13:31,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:13:31,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:13:31,272 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:13:31,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:13:31,272 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:13:31,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:13:31,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:13:31,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:13:31,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:13:31,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:13:31,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:13:31,274 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:13:31,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:13:31,274 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:13:31,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:13:31,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:13:31,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:13:31,275 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:13:31,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:13:31,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:13:31,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:13:31,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:13:31,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:13:31,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:13:31,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:13:31,277 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:13:31,277 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 21:13:31,558 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:13:31,577 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:13:31,581 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:13:31,583 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:13:31,583 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:13:31,584 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product22.cil.c [2019-10-13 21:13:31,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c3db4123/bd45b1f703564a6b9016482ff47f3159/FLAG1f8fca08f [2019-10-13 21:13:32,313 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:13:32,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product22.cil.c [2019-10-13 21:13:32,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c3db4123/bd45b1f703564a6b9016482ff47f3159/FLAG1f8fca08f [2019-10-13 21:13:32,482 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c3db4123/bd45b1f703564a6b9016482ff47f3159 [2019-10-13 21:13:32,492 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:13:32,494 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:13:32,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:13:32,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:13:32,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:13:32,499 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:13:32" (1/1) ... [2019-10-13 21:13:32,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc444e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:32, skipping insertion in model container [2019-10-13 21:13:32,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:13:32" (1/1) ... [2019-10-13 21:13:32,509 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:13:32,578 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:13:33,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:13:33,403 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:13:33,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:13:33,624 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:13:33,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:33 WrapperNode [2019-10-13 21:13:33,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:13:33,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:13:33,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:13:33,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:13:33,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:33" (1/1) ... [2019-10-13 21:13:33,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:33" (1/1) ... [2019-10-13 21:13:33,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:33" (1/1) ... [2019-10-13 21:13:33,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:33" (1/1) ... [2019-10-13 21:13:33,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:33" (1/1) ... [2019-10-13 21:13:33,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:33" (1/1) ... [2019-10-13 21:13:33,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:33" (1/1) ... [2019-10-13 21:13:33,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:13:33,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:13:33,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:13:33,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:13:33,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:33" (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 21:13:33,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:13:33,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:13:33,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:13:33,900 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:13:33,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__DecryptAutoResponder_spec__1 [2019-10-13 21:13:33,901 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:13:33,901 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:13:33,901 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:13:33,902 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:13:33,902 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:13:33,903 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:13:33,903 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:13:33,903 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:13:33,904 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:13:33,904 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:13:33,904 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-13 21:13:33,907 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AutoResponder [2019-10-13 21:13:33,907 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:13:33,907 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:13:33,907 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:13:33,907 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:13:33,908 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:13:33,908 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:13:33,908 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:13:33,908 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:13:33,909 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:13:33,909 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:13:33,909 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-13 21:13:33,909 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:13:33,910 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:13:33,910 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:13:33,910 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:13:33,910 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:13:33,911 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:13:33,911 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:13:33,911 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:13:33,912 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:13:33,912 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:13:33,912 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:13:33,912 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:13:33,912 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:13:33,913 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:13:33,913 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:13:33,913 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:13:33,913 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:13:33,913 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:13:33,914 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:13:33,914 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:13:33,914 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:13:33,914 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:13:33,914 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:13:33,915 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:13:33,915 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:13:33,915 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:13:33,915 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:13:33,915 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:13:33,915 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:13:33,916 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:13:33,916 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:13:33,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:13:33,916 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:13:33,916 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:13:33,917 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:13:33,917 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:13:33,917 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:13:33,918 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:13:33,918 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:13:33,918 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:13:33,918 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:13:33,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:13:33,919 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:13:33,919 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:13:33,919 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:13:33,920 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:13:33,920 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:13:33,920 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:13:33,921 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:13:33,921 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:13:33,921 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:13:33,922 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-13 21:13:33,922 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:13:33,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:13:33,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:13:33,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:13:33,923 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:13:33,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:13:33,924 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:13:33,925 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:13:33,925 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:13:33,925 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:13:33,925 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:13:33,926 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:13:33,926 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:13:33,926 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:13:33,926 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:13:33,926 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:13:33,926 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:13:33,927 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:13:33,927 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:13:33,927 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:13:33,927 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:13:33,927 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:13:33,927 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:13:33,928 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:13:33,928 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:13:33,928 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:13:33,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:13:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:13:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:13:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:13:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:13:33,930 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:13:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:13:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:13:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:13:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:13:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:13:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:13:33,931 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:13:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:13:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__DecryptAutoResponder_spec__1 [2019-10-13 21:13:33,932 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:13:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:13:33,933 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:13:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:13:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:13:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:13:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:13:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:13:33,934 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:13:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:13:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:13:33,935 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:13:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:13:33,936 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:13:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:13:33,937 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:13:33,940 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:13:33,941 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:13:33,941 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:13:33,941 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:13:33,942 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:13:33,942 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:13:33,942 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:13:33,949 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:13:33,950 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:13:33,950 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:13:33,950 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:13:33,951 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:13:33,951 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:13:33,951 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:13:33,951 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:13:33,951 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:13:33,951 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:13:33,952 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-13 21:13:33,952 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:13:33,952 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:13:33,952 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-13 21:13:33,952 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AutoResponder [2019-10-13 21:13:33,952 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:13:33,952 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:13:33,953 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-13 21:13:33,953 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:13:33,953 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:13:33,953 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:13:33,953 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:13:33,953 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:13:33,953 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:13:33,954 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:13:33,954 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:13:33,954 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:13:33,954 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:13:33,954 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:13:33,954 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:13:33,954 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:13:33,954 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:13:33,955 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:13:33,955 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:13:33,955 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:13:33,955 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:13:33,955 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:13:33,955 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:13:33,955 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:13:33,955 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:13:33,956 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:13:33,956 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:13:33,956 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:13:33,956 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:13:33,956 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:13:33,956 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:13:33,956 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:13:33,956 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:13:33,957 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:13:33,957 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:13:33,957 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:13:33,957 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:13:33,957 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:13:33,957 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:13:33,957 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:13:33,957 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:13:33,958 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:13:33,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:13:33,958 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:13:33,958 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:13:33,958 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:13:33,958 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:13:33,958 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:13:33,959 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:13:33,959 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:13:33,959 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:13:33,959 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:13:33,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:13:33,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:13:33,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:13:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:13:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:13:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:13:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:13:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:13:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:13:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:13:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:13:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:13:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:13:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:13:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:13:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:13:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:13:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:13:33,961 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:13:33,962 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:13:33,962 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:13:33,962 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:13:33,962 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:13:33,962 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:13:33,962 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:13:33,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:13:33,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:13:33,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:13:36,114 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:13:36,114 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:13:36,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:13:36 BoogieIcfgContainer [2019-10-13 21:13:36,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:13:36,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:13:36,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:13:36,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:13:36,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:13:32" (1/3) ... [2019-10-13 21:13:36,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5725a3e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:13:36, skipping insertion in model container [2019-10-13 21:13:36,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:13:33" (2/3) ... [2019-10-13 21:13:36,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5725a3e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:13:36, skipping insertion in model container [2019-10-13 21:13:36,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:13:36" (3/3) ... [2019-10-13 21:13:36,126 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec11_product22.cil.c [2019-10-13 21:13:36,138 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:13:36,153 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:13:36,166 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:13:36,210 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:13:36,210 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:13:36,210 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:13:36,210 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:13:36,210 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:13:36,210 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:13:36,211 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:13:36,211 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:13:36,253 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states. [2019-10-13 21:13:36,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-13 21:13:36,297 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:36,301 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-13 21:13:36,305 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:36,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:36,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1913832913, now seen corresponding path program 1 times [2019-10-13 21:13:36,321 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:36,322 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930995358] [2019-10-13 21:13:36,324 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:36,324 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:36,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:37,094 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:13:37,095 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930995358] [2019-10-13 21:13:37,096 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:37,096 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:13:37,097 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928242425] [2019-10-13 21:13:37,102 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:13:37,104 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:37,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:13:37,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:13:37,121 INFO L87 Difference]: Start difference. First operand 505 states. Second operand 2 states. [2019-10-13 21:13:37,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:37,193 INFO L93 Difference]: Finished difference Result 741 states and 977 transitions. [2019-10-13 21:13:37,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:13:37,194 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 186 [2019-10-13 21:13:37,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:37,217 INFO L225 Difference]: With dead ends: 741 [2019-10-13 21:13:37,217 INFO L226 Difference]: Without dead ends: 482 [2019-10-13 21:13:37,223 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 21:13:37,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2019-10-13 21:13:37,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2019-10-13 21:13:37,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2019-10-13 21:13:37,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 638 transitions. [2019-10-13 21:13:37,318 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 638 transitions. Word has length 186 [2019-10-13 21:13:37,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:37,323 INFO L462 AbstractCegarLoop]: Abstraction has 482 states and 638 transitions. [2019-10-13 21:13:37,323 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:13:37,323 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 638 transitions. [2019-10-13 21:13:37,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-13 21:13:37,333 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:37,334 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-13 21:13:37,334 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:37,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:37,335 INFO L82 PathProgramCache]: Analyzing trace with hash -593424949, now seen corresponding path program 1 times [2019-10-13 21:13:37,336 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:37,336 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348777066] [2019-10-13 21:13:37,336 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:37,336 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:37,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:37,716 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:13:37,716 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348777066] [2019-10-13 21:13:37,717 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:37,717 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:37,717 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366679546] [2019-10-13 21:13:37,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:37,723 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:37,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:37,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:37,724 INFO L87 Difference]: Start difference. First operand 482 states and 638 transitions. Second operand 3 states. [2019-10-13 21:13:37,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:37,791 INFO L93 Difference]: Finished difference Result 724 states and 942 transitions. [2019-10-13 21:13:37,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:37,791 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2019-10-13 21:13:37,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:37,797 INFO L225 Difference]: With dead ends: 724 [2019-10-13 21:13:37,797 INFO L226 Difference]: Without dead ends: 485 [2019-10-13 21:13:37,800 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 21:13:37,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2019-10-13 21:13:37,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 484. [2019-10-13 21:13:37,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2019-10-13 21:13:37,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 640 transitions. [2019-10-13 21:13:37,838 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 640 transitions. Word has length 187 [2019-10-13 21:13:37,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:37,839 INFO L462 AbstractCegarLoop]: Abstraction has 484 states and 640 transitions. [2019-10-13 21:13:37,839 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:37,839 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 640 transitions. [2019-10-13 21:13:37,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-10-13 21:13:37,846 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:37,847 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:37,847 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:37,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:37,848 INFO L82 PathProgramCache]: Analyzing trace with hash -463058359, now seen corresponding path program 1 times [2019-10-13 21:13:37,848 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:37,848 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538175370] [2019-10-13 21:13:37,848 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:37,848 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:37,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:38,066 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:13:38,066 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538175370] [2019-10-13 21:13:38,067 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:38,067 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:38,067 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319835265] [2019-10-13 21:13:38,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:38,072 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:38,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:38,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:38,073 INFO L87 Difference]: Start difference. First operand 484 states and 640 transitions. Second operand 3 states. [2019-10-13 21:13:38,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:38,152 INFO L93 Difference]: Finished difference Result 946 states and 1281 transitions. [2019-10-13 21:13:38,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:38,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 199 [2019-10-13 21:13:38,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:38,163 INFO L225 Difference]: With dead ends: 946 [2019-10-13 21:13:38,163 INFO L226 Difference]: Without dead ends: 527 [2019-10-13 21:13:38,168 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 21:13:38,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2019-10-13 21:13:38,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 526. [2019-10-13 21:13:38,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 526 states. [2019-10-13 21:13:38,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 712 transitions. [2019-10-13 21:13:38,230 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 712 transitions. Word has length 199 [2019-10-13 21:13:38,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:38,231 INFO L462 AbstractCegarLoop]: Abstraction has 526 states and 712 transitions. [2019-10-13 21:13:38,231 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:38,232 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 712 transitions. [2019-10-13 21:13:38,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2019-10-13 21:13:38,246 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:38,246 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:13:38,247 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:38,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:38,248 INFO L82 PathProgramCache]: Analyzing trace with hash -364676623, now seen corresponding path program 1 times [2019-10-13 21:13:38,248 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:38,248 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968232480] [2019-10-13 21:13:38,251 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:38,251 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:38,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:38,573 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-13 21:13:38,574 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968232480] [2019-10-13 21:13:38,574 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:38,574 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:13:38,575 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945050908] [2019-10-13 21:13:38,576 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:13:38,577 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:38,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:13:38,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:13:38,578 INFO L87 Difference]: Start difference. First operand 526 states and 712 transitions. Second operand 3 states. [2019-10-13 21:13:38,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:38,636 INFO L93 Difference]: Finished difference Result 1069 states and 1492 transitions. [2019-10-13 21:13:38,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:13:38,637 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 200 [2019-10-13 21:13:38,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:38,651 INFO L225 Difference]: With dead ends: 1069 [2019-10-13 21:13:38,652 INFO L226 Difference]: Without dead ends: 608 [2019-10-13 21:13:38,655 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 21:13:38,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-10-13 21:13:38,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 607. [2019-10-13 21:13:38,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 607 states. [2019-10-13 21:13:38,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 850 transitions. [2019-10-13 21:13:38,699 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 850 transitions. Word has length 200 [2019-10-13 21:13:38,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:38,700 INFO L462 AbstractCegarLoop]: Abstraction has 607 states and 850 transitions. [2019-10-13 21:13:38,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:13:38,701 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 850 transitions. [2019-10-13 21:13:38,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-13 21:13:38,706 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:38,707 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:13:38,707 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:38,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:38,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1850375443, now seen corresponding path program 1 times [2019-10-13 21:13:38,708 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:38,709 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968975739] [2019-10-13 21:13:38,709 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:38,709 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:38,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:39,193 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:13:39,193 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968975739] [2019-10-13 21:13:39,193 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:39,194 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-10-13 21:13:39,194 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236251788] [2019-10-13 21:13:39,195 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-13 21:13:39,195 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:39,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-13 21:13:39,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:13:39,196 INFO L87 Difference]: Start difference. First operand 607 states and 850 transitions. Second operand 19 states. [2019-10-13 21:13:43,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:43,965 INFO L93 Difference]: Finished difference Result 1925 states and 2678 transitions. [2019-10-13 21:13:43,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2019-10-13 21:13:43,966 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 203 [2019-10-13 21:13:43,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:43,977 INFO L225 Difference]: With dead ends: 1925 [2019-10-13 21:13:43,978 INFO L226 Difference]: Without dead ends: 1699 [2019-10-13 21:13:43,981 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=287, Invalid=2683, Unknown=0, NotChecked=0, Total=2970 [2019-10-13 21:13:43,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2019-10-13 21:13:44,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1662. [2019-10-13 21:13:44,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1662 states. [2019-10-13 21:13:44,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2334 transitions. [2019-10-13 21:13:44,104 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2334 transitions. Word has length 203 [2019-10-13 21:13:44,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:44,105 INFO L462 AbstractCegarLoop]: Abstraction has 1662 states and 2334 transitions. [2019-10-13 21:13:44,105 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-13 21:13:44,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2334 transitions. [2019-10-13 21:13:44,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 21:13:44,113 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:44,114 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:13:44,114 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:44,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:44,115 INFO L82 PathProgramCache]: Analyzing trace with hash -956589383, now seen corresponding path program 1 times [2019-10-13 21:13:44,115 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:44,115 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221152345] [2019-10-13 21:13:44,115 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:44,115 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:44,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:44,420 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:13:44,420 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221152345] [2019-10-13 21:13:44,420 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:44,420 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-13 21:13:44,421 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854671060] [2019-10-13 21:13:44,421 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:13:44,422 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:44,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:13:44,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:13:44,422 INFO L87 Difference]: Start difference. First operand 1662 states and 2334 transitions. Second operand 15 states. [2019-10-13 21:13:47,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:47,920 INFO L93 Difference]: Finished difference Result 2719 states and 3748 transitions. [2019-10-13 21:13:47,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2019-10-13 21:13:47,922 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 204 [2019-10-13 21:13:47,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:47,940 INFO L225 Difference]: With dead ends: 2719 [2019-10-13 21:13:47,940 INFO L226 Difference]: Without dead ends: 1764 [2019-10-13 21:13:47,946 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=1933, Unknown=0, NotChecked=0, Total=2162 [2019-10-13 21:13:47,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2019-10-13 21:13:48,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1732. [2019-10-13 21:13:48,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1732 states. [2019-10-13 21:13:48,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2445 transitions. [2019-10-13 21:13:48,068 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2445 transitions. Word has length 204 [2019-10-13 21:13:48,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:48,069 INFO L462 AbstractCegarLoop]: Abstraction has 1732 states and 2445 transitions. [2019-10-13 21:13:48,069 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:13:48,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2445 transitions. [2019-10-13 21:13:48,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 21:13:48,078 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:48,078 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:48,079 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:48,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:48,079 INFO L82 PathProgramCache]: Analyzing trace with hash 489053248, now seen corresponding path program 1 times [2019-10-13 21:13:48,079 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:48,079 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610820324] [2019-10-13 21:13:48,080 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:48,080 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:48,080 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:48,455 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:13:48,460 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610820324] [2019-10-13 21:13:48,460 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:48,460 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-13 21:13:48,461 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212927154] [2019-10-13 21:13:48,461 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:13:48,462 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:48,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:13:48,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2019-10-13 21:13:48,462 INFO L87 Difference]: Start difference. First operand 1732 states and 2445 transitions. Second operand 14 states. [2019-10-13 21:13:48,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:48,775 INFO L93 Difference]: Finished difference Result 2859 states and 3965 transitions. [2019-10-13 21:13:48,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-13 21:13:48,776 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 204 [2019-10-13 21:13:48,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:48,787 INFO L225 Difference]: With dead ends: 2859 [2019-10-13 21:13:48,788 INFO L226 Difference]: Without dead ends: 1792 [2019-10-13 21:13:48,792 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2019-10-13 21:13:48,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2019-10-13 21:13:48,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1761. [2019-10-13 21:13:48,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1761 states. [2019-10-13 21:13:48,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1761 states to 1761 states and 2476 transitions. [2019-10-13 21:13:48,902 INFO L78 Accepts]: Start accepts. Automaton has 1761 states and 2476 transitions. Word has length 204 [2019-10-13 21:13:48,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:48,904 INFO L462 AbstractCegarLoop]: Abstraction has 1761 states and 2476 transitions. [2019-10-13 21:13:48,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:13:48,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1761 states and 2476 transitions. [2019-10-13 21:13:48,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 21:13:48,912 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:48,912 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:13:48,912 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:48,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:48,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1632558215, now seen corresponding path program 1 times [2019-10-13 21:13:48,913 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:48,913 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082621779] [2019-10-13 21:13:48,913 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:48,914 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:48,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:49,125 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:13:49,126 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082621779] [2019-10-13 21:13:49,126 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:49,126 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:13:49,127 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824307435] [2019-10-13 21:13:49,128 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:13:49,128 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:49,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:13:49,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:13:49,129 INFO L87 Difference]: Start difference. First operand 1761 states and 2476 transitions. Second operand 5 states. [2019-10-13 21:13:50,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:50,264 INFO L93 Difference]: Finished difference Result 4068 states and 5618 transitions. [2019-10-13 21:13:50,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:13:50,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2019-10-13 21:13:50,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:50,294 INFO L225 Difference]: With dead ends: 4068 [2019-10-13 21:13:50,294 INFO L226 Difference]: Without dead ends: 3537 [2019-10-13 21:13:50,299 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:13:50,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2019-10-13 21:13:50,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 3506. [2019-10-13 21:13:50,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3506 states. [2019-10-13 21:13:50,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3506 states to 3506 states and 4880 transitions. [2019-10-13 21:13:50,523 INFO L78 Accepts]: Start accepts. Automaton has 3506 states and 4880 transitions. Word has length 204 [2019-10-13 21:13:50,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:50,524 INFO L462 AbstractCegarLoop]: Abstraction has 3506 states and 4880 transitions. [2019-10-13 21:13:50,524 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:13:50,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3506 states and 4880 transitions. [2019-10-13 21:13:50,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 21:13:50,534 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:50,534 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-10-13 21:13:50,535 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:50,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:50,535 INFO L82 PathProgramCache]: Analyzing trace with hash 677036936, now seen corresponding path program 1 times [2019-10-13 21:13:50,535 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:50,536 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128352277] [2019-10-13 21:13:50,536 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:50,536 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:50,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:50,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:50,774 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:13:50,774 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128352277] [2019-10-13 21:13:50,775 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:50,775 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:13:50,776 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302350105] [2019-10-13 21:13:50,777 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:13:50,777 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:50,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:13:50,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:13:50,778 INFO L87 Difference]: Start difference. First operand 3506 states and 4880 transitions. Second operand 7 states. [2019-10-13 21:13:52,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:52,814 INFO L93 Difference]: Finished difference Result 10740 states and 14954 transitions. [2019-10-13 21:13:52,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 21:13:52,815 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2019-10-13 21:13:52,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:52,870 INFO L225 Difference]: With dead ends: 10740 [2019-10-13 21:13:52,870 INFO L226 Difference]: Without dead ends: 8412 [2019-10-13 21:13:52,884 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-13 21:13:52,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8412 states. [2019-10-13 21:13:53,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8412 to 8390. [2019-10-13 21:13:53,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8390 states. [2019-10-13 21:13:53,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8390 states to 8390 states and 11592 transitions. [2019-10-13 21:13:53,424 INFO L78 Accepts]: Start accepts. Automaton has 8390 states and 11592 transitions. Word has length 204 [2019-10-13 21:13:53,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:53,426 INFO L462 AbstractCegarLoop]: Abstraction has 8390 states and 11592 transitions. [2019-10-13 21:13:53,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:13:53,426 INFO L276 IsEmpty]: Start isEmpty. Operand 8390 states and 11592 transitions. [2019-10-13 21:13:53,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-13 21:13:53,439 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:53,439 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:53,439 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:53,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:53,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1402076048, now seen corresponding path program 1 times [2019-10-13 21:13:53,440 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:53,440 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170242871] [2019-10-13 21:13:53,440 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:53,441 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:53,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:54,198 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:13:54,199 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170242871] [2019-10-13 21:13:54,200 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:54,200 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2019-10-13 21:13:54,200 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950005599] [2019-10-13 21:13:54,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 26 states [2019-10-13 21:13:54,202 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:54,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2019-10-13 21:13:54,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=601, Unknown=0, NotChecked=0, Total=650 [2019-10-13 21:13:54,203 INFO L87 Difference]: Start difference. First operand 8390 states and 11592 transitions. Second operand 26 states. [2019-10-13 21:13:55,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:55,275 INFO L93 Difference]: Finished difference Result 16598 states and 23015 transitions. [2019-10-13 21:13:55,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-10-13 21:13:55,276 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 205 [2019-10-13 21:13:55,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:55,359 INFO L225 Difference]: With dead ends: 16598 [2019-10-13 21:13:55,360 INFO L226 Difference]: Without dead ends: 8912 [2019-10-13 21:13:55,399 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=1239, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:13:55,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8912 states. [2019-10-13 21:13:55,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8912 to 8689. [2019-10-13 21:13:55,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8689 states. [2019-10-13 21:13:55,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8689 states to 8689 states and 11985 transitions. [2019-10-13 21:13:55,943 INFO L78 Accepts]: Start accepts. Automaton has 8689 states and 11985 transitions. Word has length 205 [2019-10-13 21:13:55,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:55,944 INFO L462 AbstractCegarLoop]: Abstraction has 8689 states and 11985 transitions. [2019-10-13 21:13:55,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 26 states. [2019-10-13 21:13:55,945 INFO L276 IsEmpty]: Start isEmpty. Operand 8689 states and 11985 transitions. [2019-10-13 21:13:55,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-10-13 21:13:55,958 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:55,958 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:13:55,958 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:55,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:55,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1653752068, now seen corresponding path program 1 times [2019-10-13 21:13:55,959 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:55,959 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215427424] [2019-10-13 21:13:55,960 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:55,960 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:55,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:56,159 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:13:56,159 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215427424] [2019-10-13 21:13:56,159 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:56,160 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 21:13:56,160 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825422373] [2019-10-13 21:13:56,160 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 21:13:56,161 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:56,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 21:13:56,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:13:56,161 INFO L87 Difference]: Start difference. First operand 8689 states and 11985 transitions. Second operand 10 states. [2019-10-13 21:13:56,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:56,323 INFO L93 Difference]: Finished difference Result 8754 states and 12076 transitions. [2019-10-13 21:13:56,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:13:56,324 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 209 [2019-10-13 21:13:56,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:56,373 INFO L225 Difference]: With dead ends: 8754 [2019-10-13 21:13:56,373 INFO L226 Difference]: Without dead ends: 8720 [2019-10-13 21:13:56,381 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:13:56,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8720 states. [2019-10-13 21:13:56,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8720 to 8716. [2019-10-13 21:13:56,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8716 states. [2019-10-13 21:13:56,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8716 states to 8716 states and 11977 transitions. [2019-10-13 21:13:56,906 INFO L78 Accepts]: Start accepts. Automaton has 8716 states and 11977 transitions. Word has length 209 [2019-10-13 21:13:56,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:56,906 INFO L462 AbstractCegarLoop]: Abstraction has 8716 states and 11977 transitions. [2019-10-13 21:13:56,906 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 21:13:56,907 INFO L276 IsEmpty]: Start isEmpty. Operand 8716 states and 11977 transitions. [2019-10-13 21:13:56,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-13 21:13:56,920 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:56,921 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 21:13:56,921 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:56,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:56,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1874145188, now seen corresponding path program 1 times [2019-10-13 21:13:56,922 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:56,922 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058792511] [2019-10-13 21:13:56,922 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:56,922 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:56,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:57,064 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:13:57,064 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058792511] [2019-10-13 21:13:57,065 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:57,065 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:13:57,065 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847279579] [2019-10-13 21:13:57,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:13:57,066 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:57,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:13:57,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:13:57,066 INFO L87 Difference]: Start difference. First operand 8716 states and 11977 transitions. Second operand 5 states. [2019-10-13 21:13:57,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:57,266 INFO L93 Difference]: Finished difference Result 15387 states and 20872 transitions. [2019-10-13 21:13:57,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 21:13:57,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2019-10-13 21:13:57,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:57,303 INFO L225 Difference]: With dead ends: 15387 [2019-10-13 21:13:57,303 INFO L226 Difference]: Without dead ends: 8959 [2019-10-13 21:13:57,329 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:13:57,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8959 states. [2019-10-13 21:13:57,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8959 to 8848. [2019-10-13 21:13:57,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8848 states. [2019-10-13 21:13:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8848 states to 8848 states and 12124 transitions. [2019-10-13 21:13:57,714 INFO L78 Accepts]: Start accepts. Automaton has 8848 states and 12124 transitions. Word has length 214 [2019-10-13 21:13:57,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:57,714 INFO L462 AbstractCegarLoop]: Abstraction has 8848 states and 12124 transitions. [2019-10-13 21:13:57,715 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 21:13:57,715 INFO L276 IsEmpty]: Start isEmpty. Operand 8848 states and 12124 transitions. [2019-10-13 21:13:57,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-13 21:13:57,737 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:57,737 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 21:13:57,738 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:57,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:57,738 INFO L82 PathProgramCache]: Analyzing trace with hash -604466908, now seen corresponding path program 1 times [2019-10-13 21:13:57,738 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:57,739 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980872754] [2019-10-13 21:13:57,739 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:57,739 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:57,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:58,664 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:13:58,665 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980872754] [2019-10-13 21:13:58,665 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:58,665 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 21:13:58,665 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867127695] [2019-10-13 21:13:58,666 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:13:58,666 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:58,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:13:58,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:13:58,667 INFO L87 Difference]: Start difference. First operand 8848 states and 12124 transitions. Second operand 9 states. [2019-10-13 21:13:59,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:13:59,092 INFO L93 Difference]: Finished difference Result 15416 states and 20789 transitions. [2019-10-13 21:13:59,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:13:59,092 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 214 [2019-10-13 21:13:59,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:13:59,131 INFO L225 Difference]: With dead ends: 15416 [2019-10-13 21:13:59,131 INFO L226 Difference]: Without dead ends: 8880 [2019-10-13 21:13:59,154 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-10-13 21:13:59,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8880 states. [2019-10-13 21:13:59,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8880 to 8814. [2019-10-13 21:13:59,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8814 states. [2019-10-13 21:13:59,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8814 states to 8814 states and 12040 transitions. [2019-10-13 21:13:59,546 INFO L78 Accepts]: Start accepts. Automaton has 8814 states and 12040 transitions. Word has length 214 [2019-10-13 21:13:59,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:13:59,547 INFO L462 AbstractCegarLoop]: Abstraction has 8814 states and 12040 transitions. [2019-10-13 21:13:59,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:13:59,547 INFO L276 IsEmpty]: Start isEmpty. Operand 8814 states and 12040 transitions. [2019-10-13 21:13:59,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-10-13 21:13:59,561 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:13:59,561 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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 21:13:59,561 INFO L410 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:13:59,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:13:59,562 INFO L82 PathProgramCache]: Analyzing trace with hash -990686485, now seen corresponding path program 1 times [2019-10-13 21:13:59,562 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:13:59,562 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689273867] [2019-10-13 21:13:59,562 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:59,562 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:13:59,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:13:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:13:59,719 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 21:13:59,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689273867] [2019-10-13 21:13:59,719 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:13:59,719 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 21:13:59,720 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902160855] [2019-10-13 21:13:59,720 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 21:13:59,720 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:13:59,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 21:13:59,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 21:13:59,721 INFO L87 Difference]: Start difference. First operand 8814 states and 12040 transitions. Second operand 6 states. [2019-10-13 21:14:00,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:00,550 INFO L93 Difference]: Finished difference Result 24003 states and 32530 transitions. [2019-10-13 21:14:00,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:14:00,551 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 215 [2019-10-13 21:14:00,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:00,618 INFO L225 Difference]: With dead ends: 24003 [2019-10-13 21:14:00,618 INFO L226 Difference]: Without dead ends: 17705 [2019-10-13 21:14:00,639 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:14:00,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17705 states. [2019-10-13 21:14:01,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17705 to 17454. [2019-10-13 21:14:01,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17454 states. [2019-10-13 21:14:01,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17454 states to 17454 states and 23892 transitions. [2019-10-13 21:14:01,433 INFO L78 Accepts]: Start accepts. Automaton has 17454 states and 23892 transitions. Word has length 215 [2019-10-13 21:14:01,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:14:01,434 INFO L462 AbstractCegarLoop]: Abstraction has 17454 states and 23892 transitions. [2019-10-13 21:14:01,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 21:14:01,434 INFO L276 IsEmpty]: Start isEmpty. Operand 17454 states and 23892 transitions. [2019-10-13 21:14:01,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-10-13 21:14:01,471 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:14:01,471 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:14:01,472 INFO L410 AbstractCegarLoop]: === Iteration 15 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:14:01,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:14:01,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1955015576, now seen corresponding path program 1 times [2019-10-13 21:14:01,473 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:14:01,473 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107974041] [2019-10-13 21:14:01,473 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:01,473 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:14:01,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:14:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:14:01,801 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:14:01,802 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107974041] [2019-10-13 21:14:01,802 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:14:01,802 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:14:01,802 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045169539] [2019-10-13 21:14:01,803 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:14:01,803 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:14:01,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:14:01,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:14:01,804 INFO L87 Difference]: Start difference. First operand 17454 states and 23892 transitions. Second operand 3 states. [2019-10-13 21:14:02,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:14:02,203 INFO L93 Difference]: Finished difference Result 35785 states and 49541 transitions. [2019-10-13 21:14:02,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:14:02,204 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 250 [2019-10-13 21:14:02,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:14:02,283 INFO L225 Difference]: With dead ends: 35785 [2019-10-13 21:14:02,283 INFO L226 Difference]: Without dead ends: 18396 [2019-10-13 21:14:02,327 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 21:14:02,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18396 states.