/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec3_product25.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:50:54,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:50:54,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:50:54,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:50:54,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:50:54,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:50:54,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:50:54,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:50:54,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:50:54,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:50:54,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:50:54,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:50:54,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:50:54,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:50:54,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:50:54,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:50:54,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:50:54,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:50:54,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:50:54,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:50:54,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:50:54,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:50:54,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:50:54,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:50:54,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:50:54,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:50:54,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:50:54,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:50:54,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:50:54,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:50:54,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:50:54,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:50:54,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:50:54,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:50:54,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:50:54,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:50:54,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:50:54,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:50:54,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:50:54,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:50:54,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:50:54,570 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:50:54,591 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:50:54,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:50:54,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:50:54,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:50:54,594 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:50:54,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:50:54,594 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:50:54,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:50:54,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:50:54,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:50:54,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:50:54,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:50:54,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:50:54,596 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:50:54,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:50:54,596 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:50:54,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:50:54,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:50:54,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:50:54,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:50:54,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:50:54,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:50:54,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:50:54,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:50:54,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:50:54,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:50:54,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:50:54,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:50:54,599 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:50:54,881 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:50:54,898 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:50:54,902 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:50:54,903 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:50:54,903 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:50:54,904 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product25.cil.c [2019-11-07 00:50:54,978 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb8206e2b/5bd80ece2a6a4436a411bbaaad476129/FLAG2d6fd82a1 [2019-11-07 00:50:55,648 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:50:55,649 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product25.cil.c [2019-11-07 00:50:55,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb8206e2b/5bd80ece2a6a4436a411bbaaad476129/FLAG2d6fd82a1 [2019-11-07 00:50:55,833 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb8206e2b/5bd80ece2a6a4436a411bbaaad476129 [2019-11-07 00:50:55,842 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:50:55,844 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:50:55,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:50:55,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:50:55,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:50:55,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:50:55" (1/1) ... [2019-11-07 00:50:55,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3afb881 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:55, skipping insertion in model container [2019-11-07 00:50:55,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:50:55" (1/1) ... [2019-11-07 00:50:55,863 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:50:55,940 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:50:56,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:50:56,758 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:50:56,842 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:50:56,934 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:50:56,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:56 WrapperNode [2019-11-07 00:50:56,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:50:56,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:50:56,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:50:56,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:50:56,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:56" (1/1) ... [2019-11-07 00:50:56,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:56" (1/1) ... [2019-11-07 00:50:56,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:56" (1/1) ... [2019-11-07 00:50:56,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:56" (1/1) ... [2019-11-07 00:50:57,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:56" (1/1) ... [2019-11-07 00:50:57,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:56" (1/1) ... [2019-11-07 00:50:57,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:56" (1/1) ... [2019-11-07 00:50:57,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:50:57,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:50:57,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:50:57,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:50:57,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:50:57,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:50:57,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:50:57,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:50:57,218 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:50:57,218 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:50:57,219 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:50:57,219 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:50:57,220 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:50:57,220 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:50:57,221 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:50:57,221 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:50:57,221 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:50:57,222 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:50:57,223 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:50:57,223 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:50:57,223 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:50:57,226 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:50:57,227 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:50:57,227 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:50:57,227 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:50:57,227 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:50:57,228 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:50:57,228 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:50:57,229 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:50:57,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:50:57,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:50:57,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:50:57,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:50:57,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:50:57,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:50:57,230 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:50:57,230 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:50:57,231 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:50:57,231 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:50:57,231 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:50:57,231 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:50:57,232 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:50:57,232 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:50:57,233 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:50:57,233 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:50:57,233 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:50:57,233 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:50:57,233 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:50:57,234 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:50:57,234 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:50:57,234 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:50:57,234 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:50:57,235 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:50:57,235 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:50:57,236 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:50:57,236 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:50:57,236 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:50:57,236 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:50:57,236 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:50:57,236 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:50:57,237 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:50:57,237 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:50:57,237 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:50:57,237 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:50:57,237 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:50:57,237 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:50:57,237 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:50:57,238 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:50:57,238 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:50:57,238 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:50:57,238 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:50:57,239 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:50:57,239 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-11-07 00:50:57,239 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:50:57,239 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:50:57,239 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:50:57,239 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:50:57,240 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:50:57,240 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:50:57,241 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:50:57,241 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:50:57,241 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:50:57,241 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:50:57,241 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:50:57,242 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:50:57,242 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:50:57,242 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:50:57,243 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:50:57,243 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:50:57,243 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:50:57,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-11-07 00:50:57,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-11-07 00:50:57,245 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-11-07 00:50:57,245 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-11-07 00:50:57,245 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:50:57,245 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:50:57,246 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:50:57,246 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:50:57,246 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:50:57,246 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:50:57,246 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:50:57,246 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:50:57,246 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:50:57,247 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:50:57,247 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:50:57,247 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:50:57,247 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:50:57,247 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:50:57,247 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:50:57,247 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:50:57,248 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:50:57,248 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:50:57,248 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:50:57,248 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:50:57,248 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:50:57,248 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:50:57,249 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:50:57,249 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:50:57,249 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:50:57,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:50:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:50:57,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:50:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:50:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:50:57,250 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:50:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:50:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:50:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:50:57,251 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:50:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:50:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:50:57,253 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:50:57,254 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:50:57,254 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:50:57,254 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:50:57,254 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:50:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:50:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:50:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:50:57,255 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:50:57,256 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:50:57,257 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:50:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:50:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:50:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:50:57,262 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:50:57,263 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:50:57,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:50:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:50:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:50:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:50:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:50:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:50:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:50:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:50:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:50:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:50:57,273 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:50:57,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:50:57,275 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:50:57,275 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:50:57,275 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:50:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:50:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:50:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:50:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:50:57,276 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:50:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:50:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:50:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:50:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:50:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:50:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:50:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:50:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:50:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:50:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:50:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:50:57,278 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:50:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:50:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:50:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:50:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:50:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:50:57,279 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:50:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:50:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:50:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:50:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:50:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:50:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:50:57,280 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:50:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:50:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:50:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:50:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:50:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:50:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:50:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:50:57,282 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:50:57,282 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:50:57,282 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:50:57,282 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:50:57,282 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:50:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:50:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:50:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:50:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:50:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:50:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:50:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:50:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:50:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:50:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:50:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:50:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:50:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:50:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:50:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:50:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:50:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:50:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:50:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:50:57,286 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:50:57,286 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:50:57,286 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:50:57,286 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-11-07 00:50:57,286 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:50:57,286 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-11-07 00:50:57,286 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:50:57,287 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:50:57,287 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-11-07 00:50:57,287 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:50:57,287 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:50:57,287 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-11-07 00:50:57,287 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-11-07 00:50:57,287 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:50:57,288 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:50:57,288 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:50:57,288 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:50:57,288 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:50:57,288 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:50:57,288 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:50:57,289 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:50:57,289 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:50:57,289 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:50:57,289 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:50:57,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:50:57,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:50:57,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:50:59,805 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:50:59,805 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:50:59,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:50:59 BoogieIcfgContainer [2019-11-07 00:50:59,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:50:59,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:50:59,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:50:59,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:50:59,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:50:55" (1/3) ... [2019-11-07 00:50:59,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e72c61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:50:59, skipping insertion in model container [2019-11-07 00:50:59,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:50:56" (2/3) ... [2019-11-07 00:50:59,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e72c61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:50:59, skipping insertion in model container [2019-11-07 00:50:59,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:50:59" (3/3) ... [2019-11-07 00:50:59,815 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product25.cil.c [2019-11-07 00:50:59,826 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:50:59,835 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:50:59,847 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:50:59,879 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:50:59,879 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:50:59,879 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:50:59,879 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:50:59,879 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:50:59,879 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:50:59,880 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:50:59,880 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:50:59,909 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states. [2019-11-07 00:50:59,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-11-07 00:50:59,931 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:59,933 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:50:59,934 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:59,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:59,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1647259373, now seen corresponding path program 1 times [2019-11-07 00:50:59,951 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:59,951 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109148445] [2019-11-07 00:50:59,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:00,627 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:51:00,628 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109148445] [2019-11-07 00:51:00,629 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:00,629 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:51:00,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796108744] [2019-11-07 00:51:00,636 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:51:00,638 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:00,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:51:00,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:51:00,656 INFO L87 Difference]: Start difference. First operand 599 states. Second operand 2 states. [2019-11-07 00:51:00,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:00,738 INFO L93 Difference]: Finished difference Result 884 states and 1194 transitions. [2019-11-07 00:51:00,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:51:00,740 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 179 [2019-11-07 00:51:00,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:00,765 INFO L225 Difference]: With dead ends: 884 [2019-11-07 00:51:00,765 INFO L226 Difference]: Without dead ends: 570 [2019-11-07 00:51:00,776 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:51:00,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2019-11-07 00:51:00,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 570. [2019-11-07 00:51:00,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 570 states. [2019-11-07 00:51:00,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 774 transitions. [2019-11-07 00:51:00,886 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 774 transitions. Word has length 179 [2019-11-07 00:51:00,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:00,888 INFO L462 AbstractCegarLoop]: Abstraction has 570 states and 774 transitions. [2019-11-07 00:51:00,888 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:51:00,888 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 774 transitions. [2019-11-07 00:51:00,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-11-07 00:51:00,895 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:00,895 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:00,896 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:00,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:00,896 INFO L82 PathProgramCache]: Analyzing trace with hash 833139246, now seen corresponding path program 1 times [2019-11-07 00:51:00,896 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:00,896 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294837313] [2019-11-07 00:51:00,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:01,179 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:51:01,179 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294837313] [2019-11-07 00:51:01,180 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:01,180 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:01,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497863334] [2019-11-07 00:51:01,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:01,182 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:01,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:01,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:01,183 INFO L87 Difference]: Start difference. First operand 570 states and 774 transitions. Second operand 3 states. [2019-11-07 00:51:01,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:01,245 INFO L93 Difference]: Finished difference Result 867 states and 1156 transitions. [2019-11-07 00:51:01,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:01,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2019-11-07 00:51:01,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:01,252 INFO L225 Difference]: With dead ends: 867 [2019-11-07 00:51:01,252 INFO L226 Difference]: Without dead ends: 573 [2019-11-07 00:51:01,254 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:01,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2019-11-07 00:51:01,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 572. [2019-11-07 00:51:01,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 572 states. [2019-11-07 00:51:01,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 776 transitions. [2019-11-07 00:51:01,299 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 776 transitions. Word has length 180 [2019-11-07 00:51:01,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:01,299 INFO L462 AbstractCegarLoop]: Abstraction has 572 states and 776 transitions. [2019-11-07 00:51:01,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:01,300 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 776 transitions. [2019-11-07 00:51:01,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-11-07 00:51:01,308 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:01,309 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:01,309 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:01,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:01,310 INFO L82 PathProgramCache]: Analyzing trace with hash 2116903770, now seen corresponding path program 1 times [2019-11-07 00:51:01,310 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:01,310 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291447231] [2019-11-07 00:51:01,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:01,468 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:51:01,469 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291447231] [2019-11-07 00:51:01,469 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:01,469 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:01,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119825028] [2019-11-07 00:51:01,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:01,474 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:01,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:01,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:01,475 INFO L87 Difference]: Start difference. First operand 572 states and 776 transitions. Second operand 3 states. [2019-11-07 00:51:01,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:01,510 INFO L93 Difference]: Finished difference Result 1122 states and 1553 transitions. [2019-11-07 00:51:01,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:01,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2019-11-07 00:51:01,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:01,515 INFO L225 Difference]: With dead ends: 1122 [2019-11-07 00:51:01,515 INFO L226 Difference]: Without dead ends: 615 [2019-11-07 00:51:01,517 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:01,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2019-11-07 00:51:01,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 614. [2019-11-07 00:51:01,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2019-11-07 00:51:01,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 848 transitions. [2019-11-07 00:51:01,544 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 848 transitions. Word has length 186 [2019-11-07 00:51:01,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:01,545 INFO L462 AbstractCegarLoop]: Abstraction has 614 states and 848 transitions. [2019-11-07 00:51:01,545 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:01,545 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 848 transitions. [2019-11-07 00:51:01,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-11-07 00:51:01,550 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:01,550 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:01,550 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:01,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:01,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1487987625, now seen corresponding path program 1 times [2019-11-07 00:51:01,551 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:01,551 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705731024] [2019-11-07 00:51:01,551 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:02,031 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:51:02,031 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705731024] [2019-11-07 00:51:02,032 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:02,032 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-11-07 00:51:02,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421646679] [2019-11-07 00:51:02,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:51:02,034 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:02,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:51:02,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:51:02,037 INFO L87 Difference]: Start difference. First operand 614 states and 848 transitions. Second operand 12 states. [2019-11-07 00:51:15,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:15,357 INFO L93 Difference]: Finished difference Result 3088 states and 4236 transitions. [2019-11-07 00:51:15,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-11-07 00:51:15,358 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 187 [2019-11-07 00:51:15,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:15,394 INFO L225 Difference]: With dead ends: 3088 [2019-11-07 00:51:15,394 INFO L226 Difference]: Without dead ends: 2795 [2019-11-07 00:51:15,398 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=377, Invalid=1515, Unknown=0, NotChecked=0, Total=1892 [2019-11-07 00:51:15,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2795 states. [2019-11-07 00:51:15,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2795 to 2770. [2019-11-07 00:51:15,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2770 states. [2019-11-07 00:51:15,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 3734 transitions. [2019-11-07 00:51:15,564 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 3734 transitions. Word has length 187 [2019-11-07 00:51:15,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:15,566 INFO L462 AbstractCegarLoop]: Abstraction has 2770 states and 3734 transitions. [2019-11-07 00:51:15,566 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:51:15,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 3734 transitions. [2019-11-07 00:51:15,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-11-07 00:51:15,570 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:15,570 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:15,570 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:15,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:15,571 INFO L82 PathProgramCache]: Analyzing trace with hash 2084170501, now seen corresponding path program 1 times [2019-11-07 00:51:15,571 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:15,572 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085323396] [2019-11-07 00:51:15,572 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:15,936 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:51:15,936 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085323396] [2019-11-07 00:51:15,936 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:15,937 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2019-11-07 00:51:15,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680558010] [2019-11-07 00:51:15,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-11-07 00:51:15,938 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:15,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-11-07 00:51:15,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:51:15,938 INFO L87 Difference]: Start difference. First operand 2770 states and 3734 transitions. Second operand 18 states. [2019-11-07 00:51:16,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:16,531 INFO L93 Difference]: Finished difference Result 5003 states and 6784 transitions. [2019-11-07 00:51:16,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-07 00:51:16,532 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 188 [2019-11-07 00:51:16,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:16,561 INFO L225 Difference]: With dead ends: 5003 [2019-11-07 00:51:16,562 INFO L226 Difference]: Without dead ends: 2536 [2019-11-07 00:51:16,572 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:51:16,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2536 states. [2019-11-07 00:51:16,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2536 to 2534. [2019-11-07 00:51:16,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2534 states. [2019-11-07 00:51:16,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 3415 transitions. [2019-11-07 00:51:16,750 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 3415 transitions. Word has length 188 [2019-11-07 00:51:16,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:16,752 INFO L462 AbstractCegarLoop]: Abstraction has 2534 states and 3415 transitions. [2019-11-07 00:51:16,752 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-11-07 00:51:16,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 3415 transitions. [2019-11-07 00:51:16,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-11-07 00:51:16,760 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:16,760 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:16,761 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:16,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:16,761 INFO L82 PathProgramCache]: Analyzing trace with hash -87101593, now seen corresponding path program 1 times [2019-11-07 00:51:16,762 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:16,762 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850025622] [2019-11-07 00:51:16,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 00:51:18,848 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850025622] [2019-11-07 00:51:18,849 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394412230] [2019-11-07 00:51:18,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:19,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 2895 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:51:19,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:19,927 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:51:19,928 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:20,326 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:51:20,532 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:20,675 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:20,867 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 00:51:20,868 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:51:20,868 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [51, 9] total 63 [2019-11-07 00:51:20,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237736120] [2019-11-07 00:51:20,869 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:51:20,869 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:20,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:51:20,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=3748, Unknown=0, NotChecked=0, Total=3906 [2019-11-07 00:51:20,871 INFO L87 Difference]: Start difference. First operand 2534 states and 3415 transitions. Second operand 9 states. [2019-11-07 00:51:24,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:24,133 INFO L93 Difference]: Finished difference Result 5046 states and 6810 transitions. [2019-11-07 00:51:24,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:51:24,134 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 197 [2019-11-07 00:51:24,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:24,150 INFO L225 Difference]: With dead ends: 5046 [2019-11-07 00:51:24,150 INFO L226 Difference]: Without dead ends: 2548 [2019-11-07 00:51:24,160 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 382 SyntacticMatches, 7 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=185, Invalid=4105, Unknown=0, NotChecked=0, Total=4290 [2019-11-07 00:51:24,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2019-11-07 00:51:24,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2548. [2019-11-07 00:51:24,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2548 states. [2019-11-07 00:51:24,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 3433 transitions. [2019-11-07 00:51:24,305 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 3433 transitions. Word has length 197 [2019-11-07 00:51:24,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:24,306 INFO L462 AbstractCegarLoop]: Abstraction has 2548 states and 3433 transitions. [2019-11-07 00:51:24,306 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:51:24,306 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 3433 transitions. [2019-11-07 00:51:24,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-11-07 00:51:24,310 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:24,311 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:24,521 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:24,521 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:24,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:24,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1768881551, now seen corresponding path program 1 times [2019-11-07 00:51:24,522 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:24,522 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557569834] [2019-11-07 00:51:24,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-11-07 00:51:26,691 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557569834] [2019-11-07 00:51:26,691 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738651919] [2019-11-07 00:51:26,691 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:27,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 2896 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:51:27,292 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:27,590 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:51:27,591 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:27,909 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:28,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:28,083 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 00:51:28,084 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:51:28,084 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [49, 7] total 57 [2019-11-07 00:51:28,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366470779] [2019-11-07 00:51:28,085 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:51:28,085 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:28,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:51:28,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=3057, Unknown=0, NotChecked=0, Total=3192 [2019-11-07 00:51:28,086 INFO L87 Difference]: Start difference. First operand 2548 states and 3433 transitions. Second operand 7 states. [2019-11-07 00:51:30,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:30,014 INFO L93 Difference]: Finished difference Result 5047 states and 6814 transitions. [2019-11-07 00:51:30,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:51:30,015 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2019-11-07 00:51:30,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:30,031 INFO L225 Difference]: With dead ends: 5047 [2019-11-07 00:51:30,031 INFO L226 Difference]: Without dead ends: 2550 [2019-11-07 00:51:30,040 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 389 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=153, Invalid=3269, Unknown=0, NotChecked=0, Total=3422 [2019-11-07 00:51:30,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2019-11-07 00:51:30,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 2550. [2019-11-07 00:51:30,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2550 states. [2019-11-07 00:51:30,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 3436 transitions. [2019-11-07 00:51:30,147 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 3436 transitions. Word has length 198 [2019-11-07 00:51:30,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:30,148 INFO L462 AbstractCegarLoop]: Abstraction has 2550 states and 3436 transitions. [2019-11-07 00:51:30,148 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:51:30,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 3436 transitions. [2019-11-07 00:51:30,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2019-11-07 00:51:30,154 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:30,154 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:30,355 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:30,355 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:30,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:30,356 INFO L82 PathProgramCache]: Analyzing trace with hash 401011369, now seen corresponding path program 1 times [2019-11-07 00:51:30,356 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:30,356 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170652337] [2019-11-07 00:51:30,357 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:31,673 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2019-11-07 00:51:32,204 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 00:51:32,205 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170652337] [2019-11-07 00:51:32,205 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:32,205 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [44] imperfect sequences [] total 44 [2019-11-07 00:51:32,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692418120] [2019-11-07 00:51:32,206 INFO L442 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-11-07 00:51:32,206 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:32,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-11-07 00:51:32,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1806, Unknown=0, NotChecked=0, Total=1892 [2019-11-07 00:51:32,208 INFO L87 Difference]: Start difference. First operand 2550 states and 3436 transitions. Second operand 44 states.